new version: 2017.1.2

It is unclear to me how to correctly fix some of the remaining build
errors obtained on jenkins, therefore I am disabling it from the build
for now.

CMakeLists.txt

@@ -9,6 +9,17 @@ if(COMMAND cmake_policy)
    endif()
 endif()
 
+
+message(STATUS "CMAKE Build type: ${CMAKE_BUILD_TYPE}")
+# Set a default build type if none was specified
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  message(STATUS "Setting build type to 'Debug' as none was specified.")
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
+  # Set the possible values of build type for cmake-gui
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
+    "MinSizeRel" "RelWithDebInfo")
+endif()
+
 include (CheckFunctionExists)
 include (CheckIncludeFile)
 include (CheckLibraryExists)
@@ -114,6 +125,9 @@ option(ENABLE_SOUND     "Set to OFF to disable building SimGear's sound support"
 option(USE_AEONWAVE     "Set to ON to use AeonWave instead of OpenAL" OFF)
 option(ENABLE_PKGUTIL   "Set to ON to build the sg_pkgutil application (default)" ON)
 option(ENABLE_DNS       "Set to ON to use udns library and DNS service resolver" ON)
+option(ENABLE_SIMD      "Enable SSE/SSE2 support for x86 compilers" ON)
+
+include (DetectArch)
 
 # until the fstream fix is applied and generally available in OSG,
 # keep the compatability link option as the default
@@ -239,7 +253,6 @@ endif(SYSTEM_EXPAT)
 
 check_include_file(inttypes.h HAVE_INTTYPES_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
-check_include_file(sys/timeb.h HAVE_SYS_TIMEB_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(windows.h HAVE_WINDOWS_H)
 
@@ -257,13 +270,18 @@ else()
 endif(ENABLE_RTI)
 
 check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)
-check_function_exists(ftime HAVE_FTIME)
-check_function_exists(timegm HAVE_TIMEGM)
 check_function_exists(rint HAVE_RINT)
 check_function_exists(mkdtemp HAVE_MKDTEMP)
 check_function_exists(bcopy HAVE_BCOPY)
 check_function_exists(mmap HAVE_MMAP)
 
+if (NOT MSVC)
+  check_function_exists(timegm HAVE_TIMEGM)
+  if (NOT HAVE_TIMEGM)
+    message(FATAL_ERROR "Non-Windows platforms must support timegm()")
+  endif()
+endif()
+
 if(HAVE_UNISTD_H)
     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
     check_cxx_source_compiles(
@@ -328,6 +346,13 @@ if(CMAKE_COMPILER_IS_GNUCXX)
       message(WARNING "GCC 4.4 will be required soon, please upgrade")
     endif()
 
+    if(ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+      endif()
+    endif()
+
     # certain GCC versions don't provide the atomic builds, and hence
     # require is to provide them in SGAtomic.cxx
     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
@@ -336,7 +361,7 @@ if(CMAKE_COMPILER_IS_GNUCXX)
         GCC_ATOMIC_BUILTINS_FOUND)
 endif(CMAKE_COMPILER_IS_GNUCXX)
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+if (CLANG)
     # Boost redeclares class members
     set(WARNING_FLAGS_CXX "-Wall -Wno-overloaded-virtual -Wno-redeclared-class-member")
     set(WARNING_FLAGS_C   "-Wall")
@@ -347,6 +372,13 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Ap
     if (CMAKE_VERSION VERSION_LESS 3.1)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
     endif()
+
+    if(ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+      endif()
+    endif()
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
@@ -365,6 +397,15 @@ if(WIN32)
 
     if(MSVC)
         set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /MP")
+        if(ENABLE_SIMD)
+          if (X86)
+            SET(CMAKE_C_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+          else()
+            SET(CMAKE_C_FLAGS_RELEASE "/O2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2")
+          endif()
+        endif()
 
         if (NOT OSG_FSTREAM_EXPORT_FIXED)
           message(STATUS "For better linking performance, use OSG with patched fstream header")

CMakeModules/BoostTestTargets.cmake

@@ -157,7 +157,7 @@ function(add_boost_test _name)
 		endforeach()
 
 		if(NOT _boostTestTargetsNagged${_name} STREQUAL "${includeType}")
-			if("includeType" STREQUAL "CONFIGURED")
+			if("${includeType}" STREQUAL "CONFIGURED")
 				message(STATUS
 					"Test '${_name}' uses the CMake-configurable form of the boost test framework - congrats! (Including File: ${includeFileLoc})")
 			elseif("${includeType}" STREQUAL "INCLUDED")

CMakeModules/DetectArch.cmake

@@ -0,0 +1,37 @@
+IF(CMAKE_SYSTEM_PROCESSOR MATCHES amd64.*|x86_64.* OR CMAKE_GENERATOR MATCHES "Visual Studio.*Win64")
+  IF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86_64 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES i686.*|i386.*|x86.* OR WIN32)
+  IF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86_64 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES arm.* AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    SET(ARM 1)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES mips)
+    SET(MIPS 1)
+ENDIF()
+
+IF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
+  # using Clang
+  SET(CLANG 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "TinyCC")
+  # using TinyCC
+  SET(TINYCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+  # using GCC
+  SET(GCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Intel")
+  # using Intel C++
+  SET(INTELCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
+  # using Visual Studio C++
+  SET(MSVC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MIPSpro")
+  # using SGI MIPSpro
+  SET(MIPSPRO 1)
+ENDIF()

SimGearConfig.cmake.in

@@ -13,4 +13,8 @@ set(SIMGEAR_SOUND @ENABLE_SOUND@)
 #  find_dependency(OpenAL)
 #endif()
 
+# SSE/SSE2 support
+
+set(ENABLE_SIMD @ENABLE_SIMD@)
+
 include("${CMAKE_CURRENT_LIST_DIR}/SimGearTargets.cmake")

simgear/bucket/test_bucket.cxx

@@ -35,123 +35,124 @@ using std::endl;
 
 void testBucketSpans()
 {
-    COMPARE(sg_bucket_span(0.0), 0.125);
-    COMPARE(sg_bucket_span(-20), 0.125);
-    COMPARE(sg_bucket_span(-40), 0.25);
-    COMPARE(sg_bucket_span(89.9), 12.0);
-    COMPARE(sg_bucket_span(88.1), 4.0);
-    COMPARE(sg_bucket_span(-89.9), 12.0);
+    SG_CHECK_EQUAL(sg_bucket_span(0.0), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-20), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-40), 0.25);
+    SG_CHECK_EQUAL(sg_bucket_span(89.9), 12.0);
+    SG_CHECK_EQUAL(sg_bucket_span(88.1), 4.0);
+    SG_CHECK_EQUAL(sg_bucket_span(-89.9), 12.0);
 }
 
 void testBasic()
 {
     SGBucket b1(5.1, 55.05);
-    COMPARE(b1.get_chunk_lon(), 5);
-    COMPARE(b1.get_chunk_lat(), 55);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 0);
-    COMPARE(b1.gen_index(), 3040320);
-    COMPARE(b1.gen_base_path(), "e000n50/e005n55");
-    VERIFY(b1.isValid());
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 5);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 55);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 0);
+    SG_CHECK_EQUAL(b1.gen_index(), 3040320);
+    SG_CHECK_EQUAL(b1.gen_base_path(), "e000n50/e005n55");
+    SG_VERIFY(b1.isValid());
     
     SGBucket b2(-10.1, -43.8);
-    COMPARE(b2.get_chunk_lon(), -11);
-    COMPARE(b2.get_chunk_lat(), -44);
-    COMPARE(b2.get_x(), 3);
-    COMPARE(b2.get_y(), 1); // latitude chunks numbered bottom to top, it seems
-    COMPARE(b2.gen_base_path(), "w020s50/w011s44");
-    VERIFY(b2.isValid());
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -11);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -44);
+    SG_CHECK_EQUAL(b2.get_x(), 3);
+    // Latitude chunks numbered bottom to top, it seems
+    SG_CHECK_EQUAL(b2.get_y(), 1);
+    SG_CHECK_EQUAL(b2.gen_base_path(), "w020s50/w011s44");
+    SG_VERIFY(b2.isValid());
     
     SGBucket b3(123.48, 9.01);
-    COMPARE(b3.get_chunk_lon(), 123);
-    COMPARE(b3.get_chunk_lat(), 9);
-    COMPARE(b3.get_x(), 3);
-    COMPARE(b3.get_y(), 0);
-    COMPARE(b3.gen_base_path(), "e120n00/e123n09");
-    VERIFY(b3.isValid());
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 123);
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 9);
+    SG_CHECK_EQUAL(b3.get_x(), 3);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
+    SG_CHECK_EQUAL(b3.gen_base_path(), "e120n00/e123n09");
+    SG_VERIFY(b3.isValid());
     
     SGBucket defBuck;
-    VERIFY(!defBuck.isValid());
+    SG_VERIFY(!defBuck.isValid());
     
     b3.make_bad();
-    VERIFY(!b3.isValid());
+    SG_VERIFY(!b3.isValid());
 
     SGBucket atAntiMeridian(180.0, 12.3);
-    VERIFY(atAntiMeridian.isValid());
-    COMPARE(atAntiMeridian.get_chunk_lon(), -180);
-    COMPARE(atAntiMeridian.get_x(), 0);
-    
+    SG_VERIFY(atAntiMeridian.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian.get_x(), 0);
+
     SGBucket atAntiMeridian2(-180.0, -78.1);
-    VERIFY(atAntiMeridian2.isValid());
-    COMPARE(atAntiMeridian2.get_chunk_lon(), -180);
-    COMPARE(atAntiMeridian2.get_x(), 0);
-    
+    SG_VERIFY(atAntiMeridian2.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian2.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian2.get_x(), 0);
+
 // check comparisom operator overload
     SGBucket b4(5.11, 55.1);
-    VERIFY(b1 == b4); // should be equal
-    VERIFY(b1 == b1);
-    VERIFY(b1 != defBuck);
-    VERIFY(b1 != b2);
+    SG_VERIFY(b1 == b4); // should be equal
+    SG_VERIFY(b1 == b1);
+    SG_VERIFY(b1 != defBuck);
+    SG_VERIFY(b1 != b2);
     
 // check wrapping/clipping of inputs
     SGBucket wrapMeridian(-200.0, 45.0);
-    COMPARE(wrapMeridian.get_chunk_lon(), 160);
-    
+    SG_CHECK_EQUAL(wrapMeridian.get_chunk_lon(), 160);
+
     SGBucket clipPole(48.9, 91);
-    COMPARE(clipPole.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(clipPole.get_chunk_lat(), 89);
 }
 
 void testPolar()
 {
     SGBucket b1(0.0, 89.92);
     SGBucket b2(10.0, 89.96);
-    COMPARE(b1.get_chunk_lat(), 89);
-    COMPARE(b1.get_chunk_lon(), 0);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 7);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
     
-    COMPARE_EP(b1.get_highest_lat(), 90.0);
-    COMPARE_EP(b1.get_width_m(), 10.0);
+    SG_CHECK_EQUAL_EP(b1.get_highest_lat(), 90.0);
+    SG_CHECK_EQUAL_EP(b1.get_width_m(), 10.0);
     
-    COMPARE(b2.get_chunk_lat(), 89);
-    COMPARE(b2.get_chunk_lon(), 0);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 7);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 7);
     
-    COMPARE(b1.gen_index(), b2.gen_index());
+    SG_CHECK_EQUAL(b1.gen_index(), b2.gen_index());
     
     SGGeod actualNorthPole1 = b1.get_corner(2);
     SGGeod actualNorthPole2 = b1.get_corner(3);
-    COMPARE_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
-    COMPARE_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
-    COMPARE_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
-    COMPARE_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
 
     SGBucket b3(-2, 89.88);
     SGBucket b4(-7, 89.88);
-    COMPARE(b3.gen_index(), b4.gen_index());
+    SG_CHECK_EQUAL(b3.gen_index(), b4.gen_index());
     
     // south pole
     SGBucket b5(-170, -89.88);
     SGBucket b6(-179, -89.88);
     
-    COMPARE(b5.get_chunk_lat(), -90);
-    COMPARE(b5.get_chunk_lon(), -180);
-    COMPARE(b5.get_x(), 0);
-    COMPARE(b5.get_y(), 0);
-    COMPARE(b5.gen_index(), b6.gen_index());
-    COMPARE_EP(b5.get_highest_lat(), -90.0);
-    COMPARE_EP(b5.get_width_m(), 10.0);
+    SG_CHECK_EQUAL(b5.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b5.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b5.get_x(), 0);
+    SG_CHECK_EQUAL(b5.get_y(), 0);
+    SG_CHECK_EQUAL(b5.gen_index(), b6.gen_index());
+    SG_CHECK_EQUAL_EP(b5.get_highest_lat(), -90.0);
+    SG_CHECK_EQUAL_EP(b5.get_width_m(), 10.0);
     
     SGGeod actualSouthPole1 = b5.get_corner(0);
     SGGeod actualSouthPole2 = b5.get_corner(1);
-    COMPARE_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
-    COMPARE_EP(actualSouthPole1.getLongitudeDeg(), -180);
-    COMPARE_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
-    COMPARE_EP(actualSouthPole2.getLongitudeDeg(), -168);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLongitudeDeg(), -180);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLongitudeDeg(), -168);
     
     SGBucket b7(200, 89.88);
-    COMPARE(b7.get_chunk_lon(), -168);
+    SG_CHECK_EQUAL(b7.get_chunk_lon(), -168);
 
 }
 
@@ -160,15 +161,15 @@ void testNearPolar()
 {
     SGBucket b1(1, 88.5);
     SGBucket b2(-1, 88.8);
-    COMPARE(b1.get_chunk_lon(), 0);
-    COMPARE(b1.get_chunk_lat(), 88);
-    VERIFY(b1.gen_index() != b2.gen_index());
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 88);
+    SG_VERIFY(b1.gen_index() != b2.gen_index());
 
     SGBucket b3(176.1, 88.5);
-    COMPARE(b3.get_chunk_lon(), 176);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 176);
     
     SGBucket b4(-178, 88.5);
-    COMPARE(b4.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), -180);
 }
 
 void testOffset()
@@ -176,74 +177,74 @@ void testOffset()
     // bucket just below the 22 degree cutoff, so the next tile north
     // is twice the width
     SGBucket b1(-59.8, 21.9);
-    COMPARE(b1.get_chunk_lat(), 21);
-    COMPARE(b1.get_chunk_lon(), -60);
-    COMPARE(b1.get_x(), 1);
-    COMPARE(b1.get_y(), 7);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 21);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
     
     // offset vertically
     SGBucket b2(b1.sibling(0, 1));
-    COMPARE(b2.get_chunk_lat(), 22);
-    COMPARE(b2.get_chunk_lon(), -60);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 0);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 0);
 
-    COMPARE(b2.gen_index(), sgBucketOffset(-59.8, 21.9, 0, 1));
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-59.8, 21.9, 0, 1));
     
     // offset vertically and horizontally. We compute horizontal (x)
     // movement at the target latitude, so this should move 0.25 * -3 degrees,
     // NOT 0.125 * -3 degrees.
     SGBucket b3(b1.sibling(-3, 1));
-    COMPARE(b3.get_chunk_lat(), 22);
-    COMPARE(b3.get_chunk_lon(), -61);
-    COMPARE(b3.get_x(), 1);
-    COMPARE(b3.get_y(), 0);
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), -61);
+    SG_CHECK_EQUAL(b3.get_x(), 1);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
     
-    COMPARE(b3.gen_index(), sgBucketOffset(-59.8, 21.9, -3, 1));
+    SG_CHECK_EQUAL(b3.gen_index(), sgBucketOffset(-59.8, 21.9, -3, 1));
 }
 
 void testPolarOffset()
 {
     SGBucket b1(-11.7, -89.6);
-    COMPARE(b1.get_chunk_lat(), -90);
-    COMPARE(b1.get_chunk_lon(), -12);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 3);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -12);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 3);
     
     // offset horizontally
     SGBucket b2(b1.sibling(-2, 0));
-    COMPARE(b2.get_chunk_lat(), -90);
-    COMPARE(b2.get_chunk_lon(), -36);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 3);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -36);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 3);
     
-    COMPARE(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
     
 // offset and wrap
     SGBucket b3(-170, 89.1);
     SGBucket b4(b3.sibling(-1, 0));
-    COMPARE(b4.get_chunk_lat(), 89);
-    COMPARE(b4.get_chunk_lon(), 168);
-    COMPARE(b4.get_x(), 0);
-    COMPARE(b4.get_y(), 0);
+    SG_CHECK_EQUAL(b4.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), 168);
+    SG_CHECK_EQUAL(b4.get_x(), 0);
+    SG_CHECK_EQUAL(b4.get_y(), 0);
     
-    COMPARE(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
+    SG_CHECK_EQUAL(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
 
     
     SGBucket b5(177, 87.3);
     SGBucket b6(b5.sibling(1, 1));
-    COMPARE(b6.get_chunk_lat(), 87);
-    COMPARE(b6.get_chunk_lon(), -180);
-    COMPARE(b6.get_x(), 0);
-    COMPARE(b6.get_y(), 3);
+    SG_CHECK_EQUAL(b6.get_chunk_lat(), 87);
+    SG_CHECK_EQUAL(b6.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b6.get_x(), 0);
+    SG_CHECK_EQUAL(b6.get_y(), 3);
     
-    COMPARE(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
+    SG_CHECK_EQUAL(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
 
     // offset vertically towards the pole
     SGBucket b7(b1.sibling(0, -5));
-    VERIFY(!b7.isValid());
+    SG_VERIFY(!b7.isValid());
     
-    VERIFY(!SGBucket(0, 90).sibling(0, 1).isValid());
+    SG_VERIFY(!SGBucket(0, 90).sibling(0, 1).isValid());
 }
 
 // test behaviour of bucket-offset near the anti-meridian (180-meridian)
@@ -251,17 +252,17 @@ void testOffsetWrap()
 {
     // near the equator
     SGBucket b1(-179.8, 16.8);
-    COMPARE(b1.get_chunk_lat(), 16);
-    COMPARE(b1.get_chunk_lon(), -180);
-    COMPARE(b1.get_x(), 1);
-    COMPARE(b1.get_y(), 6);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 6);
     
     SGBucket b2(b1.sibling(-2, 0));
-    COMPARE(b2.get_chunk_lat(), 16);
-    COMPARE(b2.get_chunk_lon(), 179);
-    COMPARE(b2.get_x(), 7);
-    COMPARE(b2.get_y(), 6);
-    COMPARE(b2.gen_index(), sgBucketOffset(-179.8, 16.8, -2, 0));
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 179);
+    SG_CHECK_EQUAL(b2.get_x(), 7);
+    SG_CHECK_EQUAL(b2.get_y(), 6);
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-179.8, 16.8, -2, 0));
     
     
 }

simgear/canvas/ShivaVG/src/shDefs.h

@@ -44,6 +44,11 @@
 #if defined(_MSC_VER)
 #  pragma warning(disable:4311)
 #  pragma warning(disable:4312)
+#  define ALIGN16 __declspec(align(16))
+#  define ALIGN16C
+#elif defined(__GNUC__)
+#  define ALIGN16
+#  define ALIGN16C __attribute__((aligned(16)))
 #endif
 
 /* Type definitions */

simgear/canvas/ShivaVG/src/shVectors.c

@@ -35,21 +35,33 @@ void SHVector2_dtor(SHVector2 *v) {
 }
 
 void SHVector3_ctor(SHVector3 *v) {
+#ifdef __SSE__
+  v->vec = _mm_setzero_ps();
+#else
   v->x=0.0f; v->y=0.0f; v->z=0.0f;
+#endif
 }
 
 void SHVector3_dtor(SHVector3 *v) {
 }
 
 void SHVector4_ctor(SHVector4 *v) {
+#ifdef __SSE__
+  v->vec = _mm_setzero_ps();
+#else
   v->x=0.0f; v->y=0.0f; v->z=0.0f; v->w=0.0f;
+#endif
 }
 
 void SHVector4_dtor(SHVector4 *v) {
 }
 
 void SHRectangle_ctor(SHRectangle *r) {
+#ifdef __SSE__
+  r->vec = _mm_setzero_ps();
+#else
   r->x=0.0f; r->y=0.0f; r->w=0.0f; r->h=0.0f;
+#endif
 }
 
 void SHRectangle_dtor(SHRectangle *r) {
@@ -135,3 +147,24 @@ int shLineLineXsection(SHVector2 *o1, SHVector2 *v1,
   xsection->y = o1->y + t1*v1->y;
   return 1;
 }
+
+#ifdef __SSE__
+# ifdef __SSE3__
+# include <pmmintrin.h>
+inline float hsum_ps_sse(__m128 v) {
+  __m128 shuf = _mm_movehdup_ps(v);
+  __m128 sums = _mm_add_ps(v, shuf);
+  shuf        = _mm_movehl_ps(shuf, sums);
+  sums        = _mm_add_ss(sums, shuf);
+  return        _mm_cvtss_f32(sums);
+}
+# else
+inline float hsum_ps_sse(__m128 v) {
+  __m128 shuf   = _mm_shuffle_ps(v, v, _MM_SHUFFLE(2, 3, 0, 1));
+  __m128 sums   = _mm_add_ps(v, shuf);
+  shuf          = _mm_movehl_ps(shuf, sums);
+  sums          = _mm_add_ss(sums, shuf);
+  return          _mm_cvtss_f32(sums);
+}
+# endif
+#endif

simgear/canvas/ShivaVG/src/shVectors.h

@@ -21,6 +21,11 @@
 #ifndef __SHVECTORS_H
 #define __SHVECTORS_H
 
+#ifdef __SSE__
+# include <xmmintrin.h>
+float hsum_ps_sse(__m128 v);
+#endif
+
 #include "shDefs.h"
 
 /* Vector structures
@@ -33,9 +38,17 @@ typedef struct
 void SHVector2_ctor(SHVector2 *v);
 void SHVector2_dtor(SHVector2 *v);
 
+
 typedef struct
 {
+#ifdef __SSE__
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,z,w; };
+  } ALIGN16C;
+#else
   SHfloat x,y,z;
+#endif
 } SHVector3;
 
 void SHVector3_ctor(SHVector3 *v);
@@ -43,7 +56,14 @@ void SHVector3_dtor(SHVector3 *v);
 
 typedef struct
 {
+#ifdef __SSE__
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,z,w; };
+  } ALIGN16C;
+#else
   SHfloat x,y,z,w;
+#endif
 } SHVector4;
 
 void SHVector4_ctor(SHVector4 *v);
@@ -51,7 +71,14 @@ void SHVector4_dtor(SHVector4 *v);
 
 typedef struct
 {
+#ifdef __SSE__
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,w,h; };
+  } ALIGN16C;
+#else
   SHfloat x,y,w,h;
+#endif
 } SHRectangle;
 
 void SHRectangle_ctor(SHRectangle *r);
@@ -61,7 +88,14 @@ void shRectangleSet(SHRectangle *r, SHfloat x,
 
 typedef struct
 {
+#ifdef __SSE__
+  union ALIGN16 {
+    __m128 mtx[4];
+    SHfloat m[4][4];
+  } ALIGN16C;
+#else
   SHfloat m[3][3];
+#endif
 } SHMatrix3x3;
 
 void SHMatrix3x3_ctor(SHMatrix3x3 *m);
@@ -83,12 +117,22 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
  *--------------------------------------------------------- */
 
 #define SET2(v,xs,ys) { v.x=xs; v.y=ys; }
-#define SET3(v,xs,ys,zs) { v.x=xs; v.y=ys; v.z=zs; }
-#define SET4(v,xs,ys,zs,ws) { v.x=xs; v.y=ys; v.z=zs; v.w=ws; }
+#ifdef __SSE__
+# define SET3(v,xs,ys,zs,ws) { v.vec=_mm_set_ps(0,zs,ys,xs); }
+# define SET4(v,xs,ys,zs,ws) { v.vec=_mm_set_ps(ws,zs,ys,xs); }
+#else
+# define SET3(v,xs,ys,zs) { v.x=xs; v.y=ys; v.z=zs; }
+# define SET4(v,xs,ys,zs,ws) { v.x=xs; v.y=ys; v.z=zs; v.w=ws; }
+#endif
 
 #define SET2V(v1,v2) { v1.x=v2.x; v1.y=v2.y; }
-#define SET3V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; }
-#define SET4V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; v1.w=v2.w; }
+#ifdef __SSE__
+# define SET3V(v1,v2) { v1.vec=v2.vec; }
+# define SET4V(v1,v2) { v1.vec=v2.vec; }
+#else
+# define SET3V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; }
+# define SET4V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; v1.w=v2.w; }
+#endif
 
 #define EQ2(v,xx,yy)       ( v.x==xx && v.y==yy )
 #define EQ3(v,xx,yy,zz)    ( v.x==xx && v.y==yy && v.z==zz )
@@ -103,48 +147,89 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
 #define EQ4V(v1,v2) ( v1.x==v2.x && v1.y==v2.y && v1.z==v2.z && v1.w==v2.w )
 
 #define ADD2(v,xx,yy)       { v.x+=xx; v.y+=yy; }
-#define ADD3(v,xx,yy,zz)    { v.x+=xx; v.y+=yy; v.z+=zz; }
-#define ADD4(v,xx,yy,zz,ww) { v.x+=xx; v.y+=yy; v.z+=zz; v.w+=ww; }
+#ifdef __SSE__
+# define ADD3(v,xx,yy,zz,ww) { v.vec=_mm_add_ps(v.vec,_mm_set_ps(0,zz,yy,xx)); }
+# define ADD4(v,xx,yy,zz,ww) { v.vec=_mm_add_ps(v.vec,_mm_set_ps(ww,zz,yy,xx)); }
+#else
+# define ADD3(v,xx,yy,zz)    { v.x+=xx; v.y+=yy; v.z+=zz; }
+# define ADD4(v,xx,yy,zz,ww) { v.x+=xx; v.y+=yy; v.z+=zz; v.w+=ww; }
+#endif
 
 #define ADD2V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; }
-#define ADD3V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; }
-#define ADD4V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; v1.w+=v2.w; }
+#ifdef __SSE__
+# define ADD3V(v1,v2) { v1.vec=_mm_add_ps(v1.vec,v2.vec); }
+# define ADD4V(v1,v2) { v1.vec=_mm_add_ps(v1.vec,v2.vec); }
+#else
+# define ADD3V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; }
+# define ADD4V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; v1.w+=v2.w; }
+#endif
 
 #define SUB2(v,xx,yy)       { v.x-=xx; v.y-=yy; }
-#define SUB3(v,xx,yy,zz)    { v.x-=xx; v.y-=yy; v.z-=zz; }
-#define SUB4(v,xx,yy,zz,ww) { v.x-=xx; v.y-=yy; v.z-=zz; v.w-=v2.w; }
+#ifdef __SSE__
+# define SUB3(v,xx,yy,zz,ww) { v.vec=_mm_sub_ps(v.vec,_mm_set_ps(0,zz,yy,xx)); }
+# define SUB4(v,xx,yy,zz,ww) { v.vec=_mm_sub_ps(v.vec,_mm_set_ps(ww,zz,yy,xx)); }
+#else
+# define SUB3(v,xx,yy,zz)    { v.x-=xx; v.y-=yy; v.z-=zz; }
+# define SUB4(v,xx,yy,zz,ww) { v.x-=xx; v.y-=yy; v.z-=zz; v.w-=v2.w; }
+#endif
 
 #define SUB2V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; }
-#define SUB3V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; }
-#define SUB4V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; v1.w-=v2.w; }
+#ifdef __SSE__
+# define SUB3V(v1,v2) { v1.vec=_mm_sub_ps(v1.vec,v2.vec); }
+# define SUB4V(v1,v2) { v1.vec=_mm_sub_ps(v1.vec,v2.vec); }
+#else
+# define SUB3V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; }
+# define SUB4V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; v1.w-=v2.w; }
+#endif
 
 #define MUL2(v,f) { v.x*=f; v.y*=f; }
-#define MUL3(v,f) { v.x*=f; v.y*=f; v.z*=z; }
-#define MUL4(v,f) { v.x*=f; v.y*=f; v.z*=z; v.w*=w; }
+#ifdef __SSE__
+# define MUL3(v,f) { v.vec=_mm_mul_ps(v.vec,_mm_set1_ps(f)); }
+# define MUL4(v,f) { v.vec=_mm_mul_ps(v.vec,_mm_set1_ps(f)); }
+#else
+# define MUL3(v,f) { v.x*=f; v.y*=f; v.z*=z; }
+# define MUL4(v,f) { v.x*=f; v.y*=f; v.z*=z; v.w*=w; }
+#endif
 
 #define DIV2(v,f) { v.x/=f; v.y/=f; }
-#define DIV3(v,f) { v.x/=f; v.y/=f; v.z/=z; }
-#define DIV4(v,f) { v.x/=f; v.y/=f; v.z/=z; v.w/=w; }
+#ifdef __SSE__
+# define DIV3(v,f) { v.vec=_mm_div_ps(v.vec,_mm_set1_ps(f)); }
+# define DIV4(v,f) { v.vec=_mm_div_ps(v.vec,_mm_set1_ps(f)); }
+#else
+# define DIV3(v,f) { v.x/=f; v.y/=f; v.z/=z; }
+# define DIV4(v,f) { v.x/=f; v.y/=f; v.z/=z; v.w/=w; }
+#endif
 
 #define ABS2(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); }
-#define ABS3(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); }
-#define ABS4(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); v.w=SH_ABS(v.w); }
+#ifdef __SSE__
+# define ABS_MASK _mm_set1_ps(-0.f)
+# define ABS3(v) { v.vec=_mm_andnot_ps(ABS_MASK, v.vec); }
+# define ABS4(v) { v.vec=_mm_andnot_ps(ABS_MASK, v.vec); }
+#else
+# define ABS3(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); }
+# define ABS4(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); v.w=SH_ABS(v.w); }
+#endif
 
-#define NORMSQ2(v) (v.x*v.x + v.y*v.y)
-#define NORMSQ3(v) (v.x*v.x + v.y*v.y + v.z*v.z)
-#define NORMSQ4(v) (v.x*v.x + v.y*v.y + v.z*v.z + v.w*v.w)
+#define NORMSQ2(v) DOT2(v,v)
+#define NORMSQ3(v) DOT3(v,v)
+#define NORMSQ4(v) DOT4(v,v)
 
 #define NORM2(v) SH_SQRT(NORMSQ2(v))
 #define NORM3(v) SH_SQRT(NORMSQ3(v))
 #define NORM4(v) SH_SQRT(NORMSQ4(v))
 
-#define NORMALIZE2(v) { SHfloat n=NORM2(v); v.x/=n; v.y/=n; }
-#define NORMALIZE3(v) { SHfloat n=NORM3(v); v.x/=n; v.y/=n; v.z/=n; }
-#define NORMALIZE4(v) { SHfloat n=NORM4(v); v.x/=n; v.y/=n; v.z/=n; v.w/=w; }
+#define NORMALIZE2(v) { SHfloat n=NORM2(v); DIV2(v,n); }
+#define NORMALIZE3(v) { SHfloat n=NORM3(v); DIV3(v,n); }
+#define NORMALIZE4(v) { SHfloat n=NORM4(v); DIV4(v,n); }
 
 #define DOT2(v1,v2) (v1.x*v2.x + v1.y*v2.y)
-#define DOT3(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z)
-#define DOT4(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z + v1.w*v2.w)
+#ifdef __SSE__
+# define DOT4(v1,v2) hsum_ps_sse(_mm_mul_ps(v1.vec,v2.vec))
+# define DOT4(v1,v2) hsum_ps_sse(_mm_mul_ps(v1.vec,v2.vec))
+#else
+# define DOT3(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z)
+# define DOT4(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z + v1.w*v2.w)
+#endif
 
 #define CROSS2(v1,v2) (v1.x*v2.y - v2.x*v1.y)
 
@@ -152,37 +237,84 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
 #define ANGLE2N(v1,v2) (SH_ACOS( DOT2(v1,v2) ))
 
 #define OFFSET2V(v, o, s) { v.x += o.x*s; v.y += o.y*s; }
-#define OFFSET3V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; }
-#define OFFSET4V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; v.w += o.w*s; }
+#ifdef __SSE__
+# define OFFSET4V(v, o, s) { v.vec=_mm_add_ps(v.vec,_mm_mul_ps(o.vec,_mm_set1_ps(s))); }
+# define OFFSET4V(v, o, s) { v.vec=_mm_add_ps(v.vec,_mm_mul_ps(o.vec,_mm_set1_ps(s))); }
+#else
+# define OFFSET3V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; }
+# define OFFSET4V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; v.w += o.w*s; }
+#endif
 
 /*-----------------------------------------------------
  * Macros for matrix operations
  *-----------------------------------------------------*/
 
-#define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
-mat.m[0][0] = m00; mat.m[0][1] = m01; mat.m[0][2] = m02; \
+#ifdef __SSE__
+# define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
+  mat.mtx[0] = _mm_set_ps(0,m02,m01,m00); \
+  mat.mtx[1] = _mm_set_ps(0,m12,m11,m10); \
+  mat.mtx[2] = _mm_set_ps(0,m22,m21,m20); \
+  mat.mtx[3] = _mm_setzero_ps(); }
+#else
+# define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
+  mat.m[0][0] = m00; mat.m[0][1] = m01; mat.m[0][2] = m02; \
   mat.m[1][0] = m10; mat.m[1][1] = m11; mat.m[1][2] = m12; \
   mat.m[2][0] = m20; mat.m[2][1] = m21; mat.m[2][2] = m22; }
+#endif
 
-#define SETMATMAT(m1, m2) { \
+#ifdef __SSE__
+# define SETMATMAT(m1, m2) { \
+  m1.mtx[0] = m2.mtx[0]; \
+  m1.mtx[1] = m2.mtx[1]; \
+  m1.mtx[2] = m2.mtx[2]; }
+#else
+# define SETMATMAT(m1, m2) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     m1.m[i][j] = m2.m[i][j]; }
+#endif
 
-#define MULMATS(mat, s) { \
+#ifdef __SSE__
+# define MULMATS(mat, s) { \
+  mat.mtx[0] = _mm_mul_ps(mat.mtx[0],_mm_set1_ps(s)); \
+  mat.mtx[1] = _mm_mul_ps(mat.mtx[1],_mm_set1_ps(s)); \
+  mat.mtx[2] = _mm_mul_ps(mat.mtx[2],_mm_set1_ps(s)); }
+#else
+# define MULMATS(mat, s) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     mat.m[i][j] *= s; }
+#endif
 
-#define DIVMATS(mat, s) { \
+#ifdef __SSE__
+# define DIVMATS(mat, s) { \
+  mat.mtx[0] = _mm_mul_ps(mat.mtx[0],_mm_set1_ps(1/s)); \
+  mat.mtx[1] = _mm_mul_ps(mat.mtx[1],_mm_set1_ps(1/s)); \
+  mat.mtx[2] = _mm_mul_ps(mat.mtx[2],_mm_set1_ps(1/s)); }
+#else
+# define DIVMATS(mat, s) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     mat.m[i][j] /= s; }
+#endif
 
-#define MULMATMAT(m1, m2, mout) { \
+#ifdef __SSE__
+# define MULMATMAT(m2, m1, mout) { \
+  int i,j; \
+  for (i=0;i<4;i++) { \
+    __m128 a = m1.mtx[0]; \
+    __m128 b = _mm_set1_ps(m2.m[i][0]); \
+    mout.mtx[i] = a*b; \
+    for (j=1;j<4;j++) { \
+      a = m1.mtx[j]; \
+      b = _mm_set1_ps(m2.m[i][j]); \
+      mout.mtx[i] += a*b; } } }
+
+#else
+# define MULMATMAT(m1, m2, mout) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
@@ -190,6 +322,7 @@ int i,j; \
       m1.m[i][0] * m2.m[0][j] + \
       m1.m[i][1] * m2.m[1][j] + \
       m1.m[i][2] * m2.m[2][j]; }
+#endif
 
 #define IDMAT(mat) SETMAT(mat, 1,0,0, 0,1,0, 0,0,1)
 

simgear/canvas/elements/CanvasElement.cxx

@@ -640,6 +640,27 @@ namespace canvas
       _scissor->_coord_reference = rf;
   }
 
+    //----------------------------------------------------------------------------
+    void Element::setRotation(unsigned int index, double r)
+    {
+        _node->getChild(NAME_TRANSFORM, index, true)->setDoubleValue("rot", r);
+    }
+
+    //----------------------------------------------------------------------------
+    void Element::setTranslation(unsigned int index, double x, double y)
+    {
+        SGPropertyNode* tf = _node->getChild(NAME_TRANSFORM, index, true);
+        tf->getChild("t", 0, true)->setDoubleValue(x);
+        tf->getChild("t", 1, true)->setDoubleValue(y);
+    }
+
+    //----------------------------------------------------------------------------
+    void Element::setTransformEnabled(unsigned int index, bool enabled)
+    {
+        SGPropertyNode* tf = _node->getChild(NAME_TRANSFORM, index, true);
+        tf->setBoolValue("enabled", enabled);
+    }
+
   //----------------------------------------------------------------------------
   osg::BoundingBox Element::getBoundingBox() const
   {
@@ -701,6 +722,9 @@ namespace canvas
         continue;
 
       SGPropertyNode* tf_node = _node->getChild("tf", i, true);
+      if (!tf_node->getBoolValue("enabled", true)) {
+        continue; // skip disabled transforms
+      }
 
       // Build up the matrix representation of the current transform node
       osg::Matrix tf;

simgear/canvas/elements/CanvasElement.hxx

@@ -172,6 +172,22 @@ namespace canvas
        */
       void setClipFrame(ReferenceFrame rf);
 
+      /**
+       *
+       */
+      void setRotation(unsigned int index, double r);
+
+      /**
+       *
+       */
+      void setTranslation(unsigned int index, double x, double y);
+
+      /**
+       *
+       *
+       */
+      void setTransformEnabled(unsigned int index, bool enabled);
+
       /**
        * Get bounding box (may not be as tight as bounding box returned by
        * #getTightBoundingBox)

simgear/canvas/elements/CanvasGroup.cxx

@@ -373,7 +373,7 @@ namespace canvas
     SG_LOG
     (
       SG_GENERAL,
-      SG_INFO,
+      SG_DEBUG,
       "canvas::Group: Moved element " << index << " to position " << index_new
     );
   }

simgear/canvas/elements/CanvasImage.cxx

@@ -487,11 +487,17 @@ namespace canvas
     if(    !fill.empty() // If no color is given default to white
         && !parseColor(fill, color) )
       return;
-
-    _colors->front() = color;
-    _colors->dirty();
+    setFill(color);
   }
 
+    //----------------------------------------------------------------------------
+    void Image::setFill(const osg::Vec4& color)
+    {
+        _colors->front() = color;
+        _colors->dirty();
+    }
+
+
   //----------------------------------------------------------------------------
   void Image::setOutset(const std::string& outset)
   {
@@ -506,6 +512,13 @@ namespace canvas
     _attributes_dirty |= SRC_RECT;
   }
 
+  //----------------------------------------------------------------------------
+  void Image::setSourceRect(const SGRect<float>& sourceRect)
+  {
+      _attributes_dirty |= SRC_RECT;
+      _src_rect = sourceRect;
+  }
+
   //----------------------------------------------------------------------------
   void Image::setSlice(const std::string& slice)
   {

simgear/canvas/elements/CanvasImage.hxx

@@ -61,6 +61,7 @@ namespace canvas
 
       void setImage(osg::ref_ptr<osg::Image> img);
       void setFill(const std::string& fill);
+      void setFill(const osg::Vec4& color);
 
       /**
        * @see http://www.w3.org/TR/css3-background/#border-image-outset
@@ -95,6 +96,10 @@ namespace canvas
 
       bool handleEvent(const EventPtr& event);
 
+      /**
+       *
+       */
+      void setSourceRect(const SGRect<float>& sourceRect);
     protected:
 
       enum ImageAttributes

simgear/canvas/elements/CanvasPath.cxx

@@ -18,12 +18,14 @@
 
 #include "CanvasPath.hxx"
 #include <simgear/scene/util/parse_color.hxx>
+#include <simgear/misc/strutils.hxx>
 
 #include <osg/Drawable>
 #include <osg/Version>
 
 #include <vg/openvg.h>
 #include <cassert>
+#include <cctype>
 
 namespace simgear
 {
@@ -57,6 +59,153 @@ namespace canvas
    */
   std::vector<float> splitAndConvert(const char del[], const std::string& str);
 
+    static float parseCSSNumber(const std::string& s)
+    {
+        if (strutils::ends_with(s, "px")) {
+            return std::stof(s.substr(0, s.length() - 2));
+        } else if (s.back() == '%') {
+            float f = std::stof(s.substr(0, s.length() - 1));
+            return f / 100.0f;
+        }
+        return std::stof(s);
+    }
+
+    //----------------------------------------------------------------------------
+    static bool parseSVGPathToVGPath(const std::string& svgPath, CmdList& commands, CoordList& coords)
+    {
+        const string_list& tokens = simgear::strutils::split_on_any_of(svgPath, "\t \n\r,");
+        char activeSVGCommand = 0;
+        bool isRelative = false;
+        int tokensNeeded = 0;
+
+        for (auto it = tokens.begin(); it != tokens.end(); ) {
+            // set up the new command data
+            if ((it->size() == 1) && std::isalpha(it->at(0))) {
+                const char svgCommand = std::toupper(it->at(0));
+                isRelative = std::islower(it->at(0));
+                switch (svgCommand) {
+                case 'Z':
+                        tokensNeeded = 0;
+                        break;
+                case 'M':
+                case 'L':
+                case 'T':
+                        tokensNeeded = 2;
+                        break;
+                case 'H':
+                case 'V':
+                        tokensNeeded = 1;
+                        break;
+                case 'C':
+                        tokensNeeded = 6;
+                        break;
+                case 'S':
+                case 'Q':
+                        tokensNeeded = 4;
+                        break;
+                case 'A':
+                        tokensNeeded = 7;
+                        break;
+                default:
+                    SG_LOG(SG_GENERAL, SG_WARN, "unrecognized SVG path command: "
+                           << *it << " at token " <<  std::distance(tokens.begin(), it));
+                    return false;
+                }
+
+                activeSVGCommand = svgCommand;
+                ++it; // advance to first coordinate token
+            }
+
+            const int numTokensRemaining = std::distance(it, tokens.end());
+            if (numTokensRemaining < tokensNeeded) {
+                SG_LOG(SG_GENERAL, SG_WARN, "insufficent SVG path tokens");
+                return false;
+            }
+
+            bool pushTokensDirectly = true;
+            if (activeSVGCommand == 'Z') {
+                commands.push_back(VG_CLOSE_PATH);
+                activeSVGCommand = 0;
+            } else if (activeSVGCommand == 'M') {
+                commands.push_back(VG_MOVE_TO | isRelative);
+                activeSVGCommand = 'L';
+            } else if (activeSVGCommand == 'L') {
+                commands.push_back(VG_LINE_TO | isRelative);
+            } else if (activeSVGCommand == 'H') {
+                commands.push_back(VG_HLINE_TO | isRelative);
+            } else if (activeSVGCommand == 'V') {
+                commands.push_back(VG_HLINE_TO | isRelative);
+            } else if (activeSVGCommand == 'C') {
+                commands.push_back(VG_CUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'S') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'Q') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'T') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'A') {
+                pushTokensDirectly = false; // deal with tokens manually
+                coords.push_back(parseCSSNumber(*it++)); // rx
+                coords.push_back(parseCSSNumber(*it++)); // ry
+                coords.push_back(parseCSSNumber(*it++)); // x-axis rotation
+
+                const bool isLargeArc = std::stoi(*it++); // large-angle
+                const bool isCCW = std::stoi(*it++); // sweep-flag
+
+                int vgCmd = isLargeArc ? (isCCW ? VG_LCCWARC_TO : VG_LCWARC_TO) :
+                    (isCCW ? VG_SCCWARC_TO : VG_SCWARC_TO);
+
+                coords.push_back(parseCSSNumber(*it++));
+                coords.push_back(parseCSSNumber(*it++));
+                commands.push_back(vgCmd | isRelative);
+            } else {
+                SG_LOG(SG_GENERAL, SG_WARN, "malformed SVG path string: expected a command at token:"
+                       << std::distance(tokens.begin(), it) << " :" << *it);
+                return false;
+            }
+
+            if (pushTokensDirectly) {
+                for (int i=0; i<tokensNeeded;++i) {
+                    coords.push_back(parseCSSNumber(*it++));
+                }
+            }
+        } // of tokens iteration
+
+        return true;
+    }
+
+
+    //---------------------------------------------------------------------------
+
+    static SGVec2f parseRectCornerRadius(SGPropertyNode* node, const std::string& xDir, const std::string& yDir, bool& haveCorner)
+    {
+        haveCorner = false;
+        std::string propName = "border-" + yDir + "-" + xDir + "-radius";
+        if (!node->hasChild(propName)) {
+            propName = "border-" + yDir + "-radius";
+            if (!node->hasChild(propName)) {
+                propName = "border-radius";
+            }
+        }
+
+        PropertyList props = node->getChildren(propName);
+        if (props.size() == 1) {
+            double r = props.at(0)->getDoubleValue(propName);
+            haveCorner = true;
+            return SGVec2f(r, r);
+        }
+
+        if (props.size() >= 2 ) {
+            haveCorner = true;
+            return SGVec2f(props.at(0)->getDoubleValue(),
+                           props.at(1)->getDoubleValue());
+        }
+
+        return SGVec2f(-1.0f, -1.0f);
+    }
+
+    //----------------------------------------------------------------------------
+
   class Path::PathDrawable:
     public osg::Drawable
   {
@@ -533,7 +682,9 @@ namespace canvas
               const Style& parent_style,
               ElementWeakPtr parent ):
     Element(canvas, node, parent_style, parent),
-    _path( new PathDrawable(this) )
+    _path( new PathDrawable(this) ),
+    _hasSVG(false),
+    _hasRect(false)
   {
     staticInit();
 
@@ -561,6 +712,23 @@ namespace canvas
       _attributes_dirty &= ~(CMDS | COORDS);
     }
 
+    // SVG path overrides manual cmd/coord specification
+    if ( _hasSVG && (_attributes_dirty & SVG))
+    {
+        CmdList cmds;
+        CoordList coords;
+        parseSVGPathToVGPath(_node->getStringValue("svg"), cmds, coords);
+        _path->setSegments(cmds, coords);
+        _attributes_dirty &= ~SVG;
+    }
+
+    if ( _hasRect &&(_attributes_dirty & RECT))
+    {
+        parseRectToVGPath();
+        _attributes_dirty &= ~RECT;
+
+    }
+
     Element::update(dt);
   }
 
@@ -630,16 +798,75 @@ namespace canvas
     childChanged(child);
   }
 
+  //----------------------------------------------------------------------------
+  void Path::setSVGPath(const std::string& svgPath)
+  {
+    _node->setStringValue("svg", svgPath);
+    _hasSVG = true;
+    _attributes_dirty |= SVG;
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::setRect(const SGRect<float> &r)
+  {
+    _rect = r;
+    _hasRect = true;
+    _attributes_dirty |= RECT;
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::setRoundRect(const SGRect<float> &r, float radiusX, float radiusY)
+  {
+    if (radiusY < 0.0) {
+        radiusY = radiusX;
+    }
+
+    setRect(r);
+    _node->getChild("border-radius", 0, true)->setDoubleValue(radiusX);
+    _node->getChild("border-radius", 1, true)->setDoubleValue(radiusY);
+  }
+
   //----------------------------------------------------------------------------
   void Path::childChanged(SGPropertyNode* child)
   {
+      const std::string& name = child->getNameString();
+      const std::string &prName = child->getParent()->getNameString();
+
+      if (simgear::strutils::starts_with(name, "border-"))
+      {
+          _attributes_dirty |= RECT;
+          return;
+      }
+
+      if (prName == "rect") {
+          _hasRect = true;
+          if (name == "left") {
+              _rect.setLeft(child->getDoubleValue());
+          } else if (name == "top") {
+              _rect.setTop(child->getDoubleValue());
+          } else if (name == "right") {
+              _rect.setRight(child->getDoubleValue());
+          } else if (name == "bottom") {
+              _rect.setBottom(child->getDoubleValue());
+          } else if (name == "width") {
+              _rect.setWidth(child->getDoubleValue());
+          } else if (name == "height") {
+              _rect.setHeight(child->getDoubleValue());
+          }
+          _attributes_dirty |= RECT;
+          return;
+      }
+
     if( child->getParent() != _node )
       return;
 
-    if( child->getNameString() == "cmd" )
+    if( name == "cmd" )
       _attributes_dirty |= CMDS;
-    else if( child->getNameString() == "coord" )
+    else if( name == "coord" )
       _attributes_dirty |= COORDS;
+    else if ( name == "svg")
+      _hasSVG = true;
+      _attributes_dirty |= SVG;
   }
 
   //----------------------------------------------------------------------------
@@ -664,5 +891,67 @@ namespace canvas
     return values;
   }
 
+    //----------------------------------------------------------------------------
+
+    void operator+=(CoordList& base, const std::initializer_list<VGfloat>& other)
+    {
+        base.insert(base.end(), other.begin(), other.end());
+    }
+
+    void Path::parseRectToVGPath()
+    {
+        CmdList commands;
+        CoordList coords;
+        commands.reserve(4);
+        coords.reserve(8);
+
+        bool haveCorner = false;
+        SGVec2f topLeft = parseRectCornerRadius(_node, "left", "top", haveCorner);
+        if (haveCorner) {
+            commands.push_back(VG_MOVE_TO_ABS);
+            coords += {_rect.l(), _rect.t() + topLeft.y()};
+            commands.push_back(VG_SCCWARC_TO_REL);
+            coords += {topLeft.x(), topLeft.y(), 0.0, topLeft.x(), -topLeft.y()};
+        } else {
+            commands.push_back(VG_MOVE_TO_ABS);
+            coords += {_rect.l(), _rect.t()};
+        }
+
+        SGVec2f topRight = parseRectCornerRadius(_node, "right", "top", haveCorner);
+        if (haveCorner) {
+            commands.push_back(VG_HLINE_TO_ABS);
+            coords += {_rect.r() - topRight.x()};
+            commands.push_back(VG_SCCWARC_TO_REL);
+            coords += {topRight.x(), topRight.y(), 0.0, topRight.x(), topRight.y()};
+        } else {
+            commands.push_back(VG_HLINE_TO_ABS);
+            coords += {_rect.r()};
+        }
+
+        SGVec2f bottomRight = parseRectCornerRadius(_node, "right", "bottom", haveCorner);
+        if (haveCorner) {
+            commands.push_back(VG_VLINE_TO_ABS);
+            coords += {_rect.b() - bottomRight.y()};
+            commands.push_back(VG_SCCWARC_TO_REL);
+            coords += {bottomRight.x(), bottomRight.y(), 0.0, -bottomRight.x(), bottomRight.y()};
+        } else {
+            commands.push_back(VG_VLINE_TO_ABS);
+            coords += {_rect.b()};
+        }
+
+        SGVec2f bottomLeft = parseRectCornerRadius(_node, "left", "bottom", haveCorner);
+        if (haveCorner) {
+            commands.push_back(VG_HLINE_TO_ABS);
+            coords += {_rect.l() + bottomLeft.x()};
+            commands.push_back(VG_SCCWARC_TO_REL);
+            coords += {bottomLeft.x(), bottomLeft.y(), 0.0, -bottomLeft.x(), -bottomLeft.y()};
+        } else {
+            commands.push_back(VG_HLINE_TO_ABS);
+            coords += {_rect.l()};
+        }
+
+        commands.push_back(VG_CLOSE_PATH);
+        _path->setSegments(commands, coords);
+    }
 } // namespace canvas
 } // namespace simgear

simgear/canvas/elements/CanvasPath.hxx

@@ -21,6 +21,7 @@
 
 #include "CanvasElement.hxx"
 #include <boost/preprocessor/iteration/iterate.hpp>
+#include <simgear/math/SGRect.hxx>
 
 namespace simgear
 {
@@ -67,18 +68,30 @@ namespace canvas
       /** Close the path (implicit lineTo to first point of path) */
       Path& close();
 
+      void setSVGPath(const std::string& svgPath);
+
+      void setRect(const SGRect<float>& r);
+      void setRoundRect(const SGRect<float>& r, float radiusX, float radiusY = -1.0);
     protected:
 
       enum PathAttributes
       {
         CMDS       = LAST_ATTRIBUTE << 1,
-        COORDS     = CMDS << 1
+        COORDS     = CMDS << 1,
+        SVG        = COORDS << 1,
+        RECT       = SVG << 1
       };
 
       class PathDrawable;
       typedef osg::ref_ptr<PathDrawable> PathDrawableRef;
       PathDrawableRef _path;
 
+      bool _hasSVG : 1;
+      bool _hasRect : 1;
+      SGRect<float> _rect;
+
+      void parseRectToVGPath();
+      
       virtual void childRemoved(SGPropertyNode * child);
       virtual void childChanged(SGPropertyNode * child);
   };

simgear/debug/BufferedLogCallback.hxx

@@ -24,7 +24,7 @@
 #define SG_DEBUG_BUFFEREDLOGCALLBACK_HXX
 
 #include <vector>
-#include <memory> // for std::auto_ptr
+#include <memory> // for std::unique_ptr
 
 #include <simgear/debug/logstream.hxx>
 
@@ -70,10 +70,10 @@ public:
     unsigned int threadsafeCopy(vector_cstring& aOutput);
 private:
     class BufferedLogCallbackPrivate;
-    std::auto_ptr<BufferedLogCallbackPrivate> d;
+    std::unique_ptr<BufferedLogCallbackPrivate> d;
 };
      
 
 } // of namespace simgear
 
-#endif // of SG_DEBUG_BUFFEREDLOGCALLBACK_HXX
+#endif // of SG_DEBUG_BUFFEREDLOGCALLBACK_HXX

simgear/debug/debug_types.h

@@ -42,6 +42,10 @@ typedef enum {
 
 /**
  * Define the possible logging priorities (and their order).
+ *
+ * Caution - unfortunately, this enum is exposed to Nasal via the logprint()
+ * function as an integer parameter. Therefore, new values should only be
+ * appended, or the priority Nasal reports to compiled code will change.
  */
 typedef enum {
     SG_BULK = 1,       // For frequent messages
@@ -49,8 +53,11 @@ typedef enum {
     SG_INFO,           // Informatory messages
     SG_WARN,           // Possible impending problem
     SG_ALERT,          // Very possible impending problem
-    SG_POPUP           // Severe enough to alert using a pop-up window
+    SG_POPUP,          // Severe enough to alert using a pop-up window
     // SG_EXIT,        // Problem (no core)
     // SG_ABORT        // Abandon ship (core)
+
+    SG_DEV_WARN,       // Warning for developers, translated to other priority
+    SG_DEV_ALERT       // Alert for developers, translated
 } sgDebugPriority;
 

simgear/debug/logstream.cxx

@@ -36,7 +36,7 @@
 #include <simgear/threads/SGQueue.hxx>
 #include <simgear/threads/SGGuard.hxx>
 
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/misc/sg_path.hxx>
 
 #if defined (SG_WINDOWS)
@@ -181,9 +181,9 @@ class LogStreamPrivate : public SGThread
 {
 private:
     /**
-     * storage of a single log entry. Note this is not used for a persistent
-     * store, but rather for short term buffering between the submitting
-     * and output threads.
+     * storage of a single log entry. This is used to pass log entries from
+     * the various threads to the logging thread, and also to store the startup
+     * entries
      */
     class LogEntry
     {
@@ -195,19 +195,24 @@ private:
         {
         }
 
-        sgDebugClass debugClass;
-        sgDebugPriority debugPriority;
+        const sgDebugClass debugClass;
+        const sgDebugPriority debugPriority;
         const char* file;
-        int line;
-        std::string message;
+        const int line;
+        const std::string message;
     };
 
+    /**
+     * RAII object to pause the logging thread if it's running, and restart it.
+     * used to safely make configuration changes.
+     */
     class PauseThread
     {
     public:
-        PauseThread(LogStreamPrivate* parent) : m_parent(parent)
+        PauseThread(LogStreamPrivate* parent)
+            : m_parent(parent)
+            , m_wasRunning(m_parent->stop())
         {
-            m_wasRunning = m_parent->stop();
         }
 
         ~PauseThread()
@@ -218,17 +223,13 @@ private:
         }
     private:
         LogStreamPrivate* m_parent;
-        bool m_wasRunning;
+        const bool m_wasRunning;
     };
+
 public:
     LogStreamPrivate() :
         m_logClass(SG_ALL),
-        m_logPriority(SG_ALERT),
-#if defined (SG_WINDOWS)
-        m_stdout_isRedirectedAlready(false),
-        m_stderr_isRedirectedAlready(false),
-#endif
-        m_isRunning(false)
+        m_logPriority(SG_ALERT)
     {
 #if defined (SG_WINDOWS)
         /*
@@ -332,7 +333,7 @@ public:
 
     ~LogStreamPrivate()
     {
-        BOOST_FOREACH(simgear::LogCallback* cb, m_callbacks) {
+        for (simgear::LogCallback* cb : m_callbacks) {
             delete cb;
         }
     }
@@ -340,6 +341,10 @@ public:
     SGMutex m_lock;
     SGBlockingQueue<LogEntry> m_entries;
 
+    // log entries posted during startup
+    std::vector<LogEntry> m_startupEntries;
+    bool m_startupLogging = false;
+
     typedef std::vector<simgear::LogCallback*> CallbackVec;
     CallbackVec m_callbacks;
     /// subset of callbacks which correspond to stdout / console,
@@ -348,12 +353,13 @@ public:
 
     sgDebugClass m_logClass;
     sgDebugPriority m_logPriority;
-    bool m_isRunning;
+    bool m_isRunning = false;
 #if defined (SG_WINDOWS)
     // track whether the console was redirected on launch (in the constructor, which is called early on)
-    bool m_stderr_isRedirectedAlready;
-    bool m_stdout_isRedirectedAlready;
+    bool m_stderr_isRedirectedAlready = false;
+    bool m_stdout_isRedirectedAlready = false;
 #endif
+    bool m_developerMode = false;
 
     void startLog()
     {
@@ -363,6 +369,16 @@ public:
         start();
     }
 
+    void setStartupLoggingEnabled(bool on)
+    {
+        if (m_startupLogging == on) {
+            return;
+        }
+
+        m_startupLogging = on;
+        m_startupEntries.clear();
+    }
+
     virtual void run()
     {
         while (1) {
@@ -373,8 +389,14 @@ public:
                 return;
             }
 
+            if (m_startupLogging) {
+                // save to the startup list for not-yet-added callbacks to
+                // pull down on startup
+                m_startupEntries.push_back(entry);
+            }
+
             // submit to each installed callback in turn
-            BOOST_FOREACH(simgear::LogCallback* cb, m_callbacks) {
+            for (simgear::LogCallback* cb : m_callbacks) {
                 (*cb)(entry.debugClass, entry.debugPriority,
                     entry.file, entry.line, entry.message);
             }
@@ -401,6 +423,13 @@ public:
     {
         PauseThread pause(this);
         m_callbacks.push_back(cb);
+
+        // we clear startup entries not using this, so always safe to run
+        // this code, container will simply be empty
+        for (auto entry : m_startupEntries) {
+            (*cb)(entry.debugClass, entry.debugPriority,
+               entry.file, entry.line, entry.message);
+        }
     }
 
     void removeCallback(simgear::LogCallback* cb)
@@ -424,6 +453,7 @@ public:
 
     bool would_log( sgDebugClass c, sgDebugPriority p ) const
     {
+        p = translatePriority(p);
         if (p >= SG_INFO) return true;
         return ((c & m_logClass) != 0 && p >= m_logPriority);
     }
@@ -431,9 +461,23 @@ public:
     void log( sgDebugClass c, sgDebugPriority p,
             const char* fileName, int line, const std::string& msg)
     {
+        p = translatePriority(p);
         LogEntry entry(c, p, fileName, line, msg);
         m_entries.push(entry);
     }
+
+    sgDebugPriority translatePriority(sgDebugPriority in) const
+    {
+        if (in == SG_DEV_WARN) {
+            return m_developerMode ? SG_WARN : SG_DEBUG;
+        }
+
+        if (in == SG_DEV_ALERT) {
+            return m_developerMode ? SG_POPUP : SG_WARN;
+        }
+
+        return in;
+    }
 };
 
 /////////////////////////////////////////////////////////////////////////////
@@ -461,6 +505,12 @@ logstream::setLogLevels( sgDebugClass c, sgDebugPriority p )
     global_privateLogstream->setLogLevels(c, p);
 }
 
+void logstream::setDeveloperMode(bool devMode)
+{
+    global_privateLogstream->m_developerMode = devMode;
+}
+
+
 void
 logstream::addCallback(simgear::LogCallback* cb)
 {
@@ -557,6 +607,11 @@ logstream::logToFile( const SGPath& aPath, sgDebugClass c, sgDebugPriority p )
     global_privateLogstream->addCallback(new FileLogCallback(aPath, c, p));
 }
 
+void logstream::setStartupLoggingEnabled(bool enabled)
+{
+    global_privateLogstream->setStartupLoggingEnabled(enabled);
+}
+
 namespace simgear
 {
 

simgear/debug/logstream.hxx

@@ -93,6 +93,13 @@ public:
     
     sgDebugPriority get_log_priority() const;
 
+    /**
+     * set developer mode on/off. In developer mode, SG_DEV_WARN messags
+     * are treated as warnings. In normal (non-developer) mode they are
+     * treated as SG_DEBUG.
+     */
+    void setDeveloperMode(bool devMode);
+
     /**
      * the core logging method
      */
@@ -134,6 +141,12 @@ public:
      
     void removeCallback(simgear::LogCallback* cb);
 
+    /**
+     * optionally record all entries and submit them to new log callbacks that
+     * are added. This allows simplified logging configuration, but still including
+     * early startup information in all logs.
+     */
+    void setStartupLoggingEnabled(bool enabled);
 private:
     // constructor
     logstream();

simgear/environment/test_metar.cxx

@@ -4,6 +4,7 @@
 #endif
 
 #include <simgear/compiler.h>
+#include <simgear/misc/test_macros.hxx>
 
 #include <iostream>
 #include <cstdlib>
@@ -23,75 +24,56 @@ using std::cerr;
 using std::endl;
 using std::string;
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:" << a << endl; \
-        exit(1); \
-    }
-
-#define FUZZY_COMPARE(a, b, epsilon) \
-    if (fabs(a - b) > epsilon) { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:" << a << endl; \
-        cerr << "\tepsilon:" << epsilon << endl; \
-    }
-
-#define VERIFY(a) \
-    if (!(a))  { \
-        cerr << "failed:" << #a << endl; \
-        exit(1); \
-    }
 
 const double TEST_EPSILON = 1e-9;
 
 void test_basic()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 VCSH FEW025CB SCT048 10/05 Q1025 TEMPO VRB03KT");
-    COMPARE(m1.getYear(), 2011);
-    COMPARE(m1.getMonth(), 10);
-    COMPARE(m1.getDay(), 20);
-    COMPARE(m1.getHour(), 11);
-    COMPARE(m1.getMinute(), 25);
-    COMPARE(m1.getReportType(), -1); // should default to NIL?
-    
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
-    
-    COMPARE(m1.getWeather().size(), 1);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getYear(), 2011);
+    SG_CHECK_EQUAL(m1.getMonth(), 10);
+    SG_CHECK_EQUAL(m1.getDay(), 20);
+    SG_CHECK_EQUAL(m1.getHour(), 11);
+    SG_CHECK_EQUAL(m1.getMinute(), 25);
+    SG_CHECK_EQUAL(m1.getReportType(), -1); // should default to NIL?
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+
+    SG_CHECK_EQUAL(m1.getWeather().size(), 1);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
+
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 void test_sensor_failure_weather()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 // FEW025CB SCT048 10/05 Q1025");
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
 
-    COMPARE(m1.getWeather().size(), 0);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getWeather().size(), 0);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 void test_sensor_failure_cloud()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 FEW025CB/// SCT048/// 10/05 Q1025");
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
 
-    COMPARE(m1.getWeather().size(), 0);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getWeather().size(), 0);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 int main(int argc, char* argv[])

simgear/ephemeris/stardata.cxx

@@ -26,7 +26,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 #include "stardata.hxx"
 

simgear/hla/RTI13Ambassador.hxx

@@ -117,7 +117,7 @@ public:
     // bool unconditionalAttributeOwnershipDivestiture(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.unconditionalAttributeOwnershipDivestiture(objectHandle, *attributeHandleSet);
@@ -136,7 +136,7 @@ public:
     // bool negotiatedAttributeOwnershipDivestiture(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles, const RTIData& tag)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.negotiatedAttributeOwnershipDivestiture(objectHandle, *attributeHandleSet, tag.data());
@@ -156,7 +156,7 @@ public:
     // bool attributeOwnershipAcquisition(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles, const RTIData& tag)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.attributeOwnershipAcquisition(objectHandle, *attributeHandleSet, tag.data());
@@ -177,7 +177,7 @@ public:
     // bool attributeOwnershipAcquisitionIfAvailable(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.attributeOwnershipAcquisitionIfAvailable(objectHandle, *attributeHandleSet);
@@ -199,7 +199,7 @@ public:
     // RTIHandleSet attributeOwnershipReleaseResponse(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         attributeHandleSet.reset(_rtiAmbassador.attributeOwnershipReleaseResponse(objectHandle, *attributeHandleSet));
@@ -223,7 +223,7 @@ public:
     // bool cancelNegotiatedAttributeOwnershipDivestiture(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.cancelNegotiatedAttributeOwnershipDivestiture(objectHandle, *attributeHandleSet);
@@ -243,7 +243,7 @@ public:
     // bool cancelAttributeOwnershipAcquisition(const RTIHandle& objectHandle, const RTIHandleSet& attributeHandles)
     // {
     //     try {
-    //         std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
+    //         std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(attributeHandles.size()));
     //         for (RTIHandleSet::const_iterator i = attributeHandles.begin(); i != attributeHandles.end(); ++i)
     //             attributeHandleSet->add(*i);
     //         _rtiAmbassador.cancelAttributeOwnershipAcquisition(objectHandle, *attributeHandleSet);

simgear/hla/RTI13ObjectClass.cxx

@@ -101,7 +101,7 @@ RTI13ObjectClass::publish(const HLAIndexList& indexList)
 
     try {
         unsigned numAttributes = getNumAttributes();
-        std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
+        std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
         for (HLAIndexList::const_iterator i = indexList.begin(); i != indexList.end(); ++i) {
             if (_attributeHandleVector.size() <= *i) {
                 SG_LOG(SG_NETWORK, SG_WARN, "RTI13ObjectClass::publish(): Invalid attribute index!");
@@ -195,7 +195,7 @@ RTI13ObjectClass::subscribe(const HLAIndexList& indexList, bool active)
 
     try {
         unsigned numAttributes = getNumAttributes();
-        std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
+        std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
         for (HLAIndexList::const_iterator i = indexList.begin(); i != indexList.end(); ++i) {
             if (_attributeHandleVector.size() <= *i) {
                 SG_LOG(SG_NETWORK, SG_WARN, "RTI13ObjectClass::subscribe(): Invalid attribute index!");

simgear/hla/RTI13ObjectInstance.cxx

@@ -243,7 +243,7 @@ RTI13ObjectInstance::requestObjectAttributeValueUpdate(const HLAIndexList& index
 
     try {
         unsigned numAttributes = getNumAttributes();
-        std::auto_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
+        std::unique_ptr<RTI::AttributeHandleSet> attributeHandleSet(RTI::AttributeHandleSetFactory::create(numAttributes));
         for (HLAIndexList::const_iterator i = indexList.begin(); i != indexList.end(); ++i) {
             if (getAttributeOwned(*i)) {
                 SG_LOG(SG_NETWORK, SG_WARN, "RTI13ObjectInstance::requestObjectAttributeValueUpdate(): "

simgear/hla/RTI13ObjectInstance.hxx

@@ -101,7 +101,7 @@ private:
     SGSharedPtr<RTI13Ambassador> _ambassador;
 
     // cached storage for updates
-    std::auto_ptr<RTI::AttributeHandleValuePairSet> _attributeValuePairSet;
+    std::unique_ptr<RTI::AttributeHandleValuePairSet> _attributeValuePairSet;
 };
 
 }

simgear/io/CMakeLists.txt

@@ -1,4 +1,4 @@
-
+add_subdirectory(iostreams)
 
 include (SimGearComponent)
 

simgear/io/DNSClient.cxx

@@ -22,7 +22,7 @@
 //
 
 #include "DNSClient.hxx"
-#include "udns.h"
+#include <udns.h>
 #include <time.h>
 #include <simgear/debug/logstream.hxx>
 
@@ -33,18 +33,33 @@ namespace DNS {
 class Client::ClientPrivate {
 public:
     ClientPrivate() {
-        if (dns_init(NULL, 0) < 0)
-            SG_LOG(SG_IO, SG_ALERT, "Can't init udns library" );
 
-        if( dns_open(NULL) < 0 )
+        if( instanceCounter++ == 0 )
+          if (dns_init(NULL, 0) < 0)
+              SG_LOG(SG_IO, SG_ALERT, "Can't init udns library" );
+
+        ctx = dns_new(NULL);
+
+        if (dns_init(ctx, 0) < 0)
+            SG_LOG(SG_IO, SG_ALERT, "Can't create udns context" );
+
+        if( dns_open(ctx) < 0 )
             SG_LOG(SG_IO, SG_ALERT, "Can't open udns context" );
     }
 
     ~ClientPrivate() {
-        dns_close(NULL);
+        dns_close(ctx);
+        dns_free(ctx);
+        if( --instanceCounter == 0 )
+            dns_close(NULL);
     }
+
+    struct dns_ctx * ctx;
+    static size_t instanceCounter;
 };
 
+size_t Client::ClientPrivate::instanceCounter = 0;
+
 Request::Request( const std::string & dn ) :
         _dn(dn),
         _type(DNS_T_ANY),
@@ -111,10 +126,10 @@ static void dnscbSRV(struct dns_ctx *ctx, struct dns_rr_srv *result, void *data)
     r->setComplete();
 }
 
-void SRVRequest::submit()
+void SRVRequest::submit( Client * client )
 {
     // if service is defined, pass service and protocol
-    if (!dns_submit_srv(NULL, getDn().c_str(), _service.empty() ? NULL : _service.c_str(), _service.empty() ? NULL : _protocol.c_str(), 0, dnscbSRV, this )) {
+    if (!dns_submit_srv(client->d->ctx, getDn().c_str(), _service.empty() ? NULL : _service.c_str(), _service.empty() ? NULL : _protocol.c_str(), 0, dnscbSRV, this )) {
         SG_LOG(SG_IO, SG_ALERT, "Can't submit dns request for " << getDn());
         return;
     }
@@ -148,10 +163,10 @@ static void dnscbTXT(struct dns_ctx *ctx, struct dns_rr_txt *result, void *data)
     r->setComplete();
 }
 
-void TXTRequest::submit()
+void TXTRequest::submit( Client * client )
 {
     // protocol and service an already encoded in DN so pass in NULL for both
-    if (!dns_submit_txt(NULL, getDn().c_str(), DNS_C_IN, 0, dnscbTXT, this )) {
+    if (!dns_submit_txt(client->d->ctx, getDn().c_str(), DNS_C_IN, 0, dnscbTXT, this )) {
         SG_LOG(SG_IO, SG_ALERT, "Can't submit dns request for " << getDn());
         return;
     }
@@ -196,9 +211,9 @@ static void dnscbNAPTR(struct dns_ctx *ctx, struct dns_rr_naptr *result, void *d
     r->setComplete();
 }
 
-void NAPTRRequest::submit()
+void NAPTRRequest::submit( Client * client )
 {
-    if (!dns_submit_naptr(NULL, getDn().c_str(), 0, dnscbNAPTR, this )) {
+    if (!dns_submit_naptr(client->d->ctx, getDn().c_str(), 0, dnscbNAPTR, this )) {
         SG_LOG(SG_IO, SG_ALERT, "Can't submit dns request for " << getDn());
         return;
     }
@@ -217,15 +232,16 @@ Client::Client() :
 
 void Client::makeRequest(const Request_ptr& r)
 {
-    r->submit();
+    r->submit(this);
 }
 
 void Client::update(int waitTimeout)
 {
     time_t now = time(NULL);
-    if( dns_timeouts( NULL, waitTimeout, now ) < 0 )
+    if( dns_timeouts( d->ctx, -1, now ) < 0 )
         return;
-    dns_ioevent(NULL, now);
+
+    dns_ioevent(d->ctx, now);
 }
 
 } // of namespace DNS

simgear/io/DNSClient.hxx

@@ -24,7 +24,7 @@
 #ifndef SG_DNS_CLIENT_HXX
 #define SG_DNS_CLIENT_HXX
 
-#include <memory> // for std::auto_ptr
+#include <memory> // for std::unique_ptr
 #include <string>
 #include <vector>
 #include <ctime> // for time_t
@@ -39,6 +39,7 @@ namespace simgear
 namespace DNS
 {
 
+class Client;
 class Request : public SGReferenced
 {
 public:
@@ -50,7 +51,7 @@ public:
     bool isTimeout() const;
     void setComplete( bool b = true ) { _complete = b; }
 
-    virtual void submit() = 0;
+    virtual void submit( Client * client) = 0;
 
     std::string cname;
     std::string qname;
@@ -68,7 +69,7 @@ class NAPTRRequest : public Request
 {
 public:
     NAPTRRequest( const std::string & dn );
-    virtual void submit();
+    virtual void submit( Client * client );
 
     struct NAPTR : SGReferenced {
         int order;
@@ -91,7 +92,7 @@ class SRVRequest : public Request
 public:
     SRVRequest( const std::string & dn );
     SRVRequest( const std::string & dn, const string & service, const string & protocol );
-    virtual void submit();
+    virtual void submit( Client * client );
 
     struct SRV : SGReferenced {
       int priority;
@@ -111,7 +112,7 @@ class TXTRequest : public Request
 {
 public:
     TXTRequest( const std::string & dn );
-    virtual void submit();
+    virtual void submit( Client * client );
 
     typedef std::vector<string> TXT_list;
     typedef std::map<std::string,std::string> TXT_Attribute_map;
@@ -131,9 +132,8 @@ public:
 
 //    void cancelRequest(const Request_ptr& r, std::string reason = std::string());
 
-private:
     class ClientPrivate;
-    std::auto_ptr<ClientPrivate> d;
+    std::unique_ptr<ClientPrivate> d;
 };
 
 } // of namespace DNS

simgear/io/HTTPClient.hxx

@@ -24,7 +24,7 @@
 #ifndef SG_HTTP_CLIENT_HXX
 #define SG_HTTP_CLIENT_HXX
 
-#include <memory> // for std::auto_ptr
+#include <memory> // for std::unique_ptr
 #include <stdint.h> // for uint_64t
 
 #include <simgear/io/HTTPFileRequest.hxx>
@@ -125,7 +125,7 @@ private:
     friend class Request;
 
     class ClientPrivate;
-    std::auto_ptr<ClientPrivate> d;
+    std::unique_ptr<ClientPrivate> d;
 };
 
 } // of namespace HTTP

simgear/io/HTTPFileRequest.hxx

@@ -23,7 +23,7 @@
 
 #include "HTTPRequest.hxx"
 
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 namespace simgear
 {

simgear/io/HTTPRepository.cxx

@@ -37,7 +37,7 @@
 #include <simgear/misc/sg_dir.hxx>
 #include <simgear/io/HTTPClient.hxx>
 #include <simgear/io/sg_file.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -57,6 +57,8 @@ namespace simgear
         {
         }
 
+        virtual void cancel();
+
         size_t contentSize() const
         {
             return _contentSize;
@@ -102,7 +104,6 @@ public:
         hashCacheDirty(false),
         p(parent),
         isUpdating(false),
-        updateEverything(false),
         status(HTTPRepository::REPO_NO_ERROR),
         totalDownloaded(0)
     { ; }
@@ -114,14 +115,10 @@ public:
     std::string baseUrl;
     SGPath basePath;
     bool isUpdating;
-    bool updateEverything;
-    string_list updatePaths;
     HTTPRepository::ResultCode status;
     HTTPDirectory* rootDir;
     size_t totalDownloaded;
 
-    void updateWaiting();
-
     HTTP::Request_ptr updateFile(HTTPDirectory* dir, const std::string& name,
                                  size_t sz);
     HTTP::Request_ptr updateDir(HTTPDirectory* dir, const std::string& hash,
@@ -196,12 +193,10 @@ class HTTPDirectory
     typedef std::vector<ChildInfo> ChildInfoList;
     ChildInfoList children;
 
-
 public:
     HTTPDirectory(HTTPRepoPrivate* repo, const std::string& path) :
         _repository(repo),
-        _relativePath(path),
-        _state(DoNotUpdate)
+        _relativePath(path)
   {
       assert(repo);
 
@@ -238,8 +233,6 @@ public:
         fpath.append(".dirindex");
         _repository->updatedFileContents(fpath, hash);
 
-        _state = Updated;
-
         children.clear();
         parseDirIndex(children);
         std::sort(children.begin(), children.end());
@@ -247,7 +240,6 @@ public:
 
     void failedToUpdate(HTTPRepository::ResultCode status)
     {
-        _state = UpdateFailed;
         if (_relativePath.empty()) {
             // root dir failed
             _repository->failedToGetRootIndex(status);
@@ -261,7 +253,7 @@ public:
         if (_repository->installedCopyPath.isNull()) {
             return;
         }
-        
+
         string_list indexNames = indexChildren();
         const_string_list_iterator nameIt = indexNames.begin();
         for (; nameIt != indexNames.end(); ++nameIt) {
@@ -284,7 +276,7 @@ public:
             }
 
             SG_LOG(SG_TERRASYNC, SG_BULK, "new child, copying existing file" << cp << p);
-            
+
             SGBinaryFile src(cp);
             SGBinaryFile dst(p);
             src.open(SG_IO_IN);
@@ -306,11 +298,7 @@ public:
 
     void updateChildrenBasedOnHash()
     {
-        // if we got here for a dir which is still updating or excluded
-        // from updates, just bail out right now.
-        if (_state != Updated) {
-            return;
-        }
+        //SG_LOG(SG_TERRASYNC, SG_DEBUG, "updated children for:" << relativePath());
 
         copyInstalledChildren();
 
@@ -345,9 +333,6 @@ public:
                 SG_LOG(SG_TERRASYNC, SG_DEBUG, "file exists hash is good:" << it->file() );
                 if (c->type == ChildInfo::DirectoryType) {
                     HTTPDirectory* childDir = childDirectory(it->file());
-                    if (childDir->_state == NotUpdated) {
-                        childDir->_state = Updated;
-                    }
                     childDir->updateChildrenBasedOnHash();
                 }
             }
@@ -365,95 +350,6 @@ public:
         scheduleUpdates(toBeUpdated);
     }
 
-    void markAsUpToDate()
-    {
-        _state = Updated;
-    }
-
-    void markAsUpdating()
-    {
-        assert(_state == NotUpdated);
-        _state = HTTPDirectory::UpdateInProgress;
-    }
-
-    void markAsEnabled()
-    {
-        // assert because this should only get invoked on newly created
-        // directory objects which are inside the sub-tree(s) to be updated
-        assert(_state == DoNotUpdate);
-        _state = NotUpdated;
-    }
-
-    void markSubtreeAsNeedingUpdate()
-    {
-        if (_state == Updated) {
-            _state = NotUpdated; // reset back to not-updated
-        }
-
-        ChildInfoList::iterator cit;
-        for (cit = children.begin(); cit != children.end(); ++cit) {
-            if (cit->type == ChildInfo::DirectoryType) {
-                HTTPDirectory* childDir = childDirectory(cit->name);
-                childDir->markSubtreeAsNeedingUpdate();
-            }
-        } // of child iteration
-    }
-
-    void markSubtreeAsEnabled()
-    {
-        if (_state == DoNotUpdate) {
-            markAsEnabled();
-        }
-
-        ChildInfoList::iterator cit;
-        for (cit = children.begin(); cit != children.end(); ++cit) {
-            if (cit->type == ChildInfo::DirectoryType) {
-                HTTPDirectory* childDir = childDirectory(cit->name);
-                childDir->markSubtreeAsEnabled();
-            }
-        } // of child iteration
-    }
-
-
-    void markAncestorChainAsEnabled()
-    {
-        if (_state == DoNotUpdate) {
-            markAsEnabled();
-        }
-
-        if (_relativePath.empty()) {
-            return;
-        }
-
-        std::string prPath = SGPath(_relativePath).dir();
-        if (prPath.empty()) {
-            _repository->rootDir->markAncestorChainAsEnabled();
-        } else {
-            HTTPDirectory* prDir = _repository->getOrCreateDirectory(prPath);
-            prDir->markAncestorChainAsEnabled();
-        }
-    }
-
-    void updateIfWaiting(const std::string& hash, size_t sz)
-    {
-        if (_state == NotUpdated) {
-            _repository->updateDir(this, hash, sz);
-            return;
-        }
-
-        if ((_state == DoNotUpdate) || (_state == UpdateInProgress)) {
-            return;
-        }
-
-        ChildInfoList::iterator cit;
-        for (cit = children.begin(); cit != children.end(); ++cit) {
-            if (cit->type == ChildInfo::DirectoryType) {
-                HTTPDirectory* childDir = childDirectory(cit->name);
-                childDir->updateIfWaiting(cit->hash, cit->sizeInBytes);
-            }
-        } // of child iteration
-    }
-
     HTTPDirectory* childDirectory(const std::string& name)
     {
         std::string childPath = relativePath().empty() ? name : relativePath() + "/" + name;
@@ -494,11 +390,6 @@ public:
                 _repository->updateFile(this, *it, cit->sizeInBytes);
             } else {
                 HTTPDirectory* childDir = childDirectory(*it);
-                if (childDir->_state == DoNotUpdate) {
-                    SG_LOG(SG_TERRASYNC, SG_WARN, "scheduleUpdate, child:" << *it << " is marked do not update so skipping");
-                    continue;
-                }
-
                 _repository->updateDir(childDir, cit->hash, cit->sizeInBytes);
             }
         }
@@ -603,6 +494,11 @@ private:
                 continue; // ignore path, next line
             }
 
+            if( typeData == "time" && tokens.size() > 1 ) {
+                SG_LOG(SG_TERRASYNC, SG_INFO, ".dirindex at '" << p.str() << "' timestamp: " << tokens[1] );
+                continue;
+            }
+
             if( tokens.size() < 3 ) {
                 SG_LOG(SG_TERRASYNC, SG_WARN, "malformed .dirindex file: not enough tokens in line '" << line << "' (ignoring line)" );
                 continue;
@@ -612,6 +508,14 @@ private:
                 SG_LOG(SG_TERRASYNC, SG_WARN, "malformed .dirindex file: invalid type in line '" << line << "', expected 'd' or 'f', (ignoring line)" );
                 continue;
             }
+
+            // security: prevent writing outside the repository via ../../.. filenames
+            // (valid filenames never contain / - subdirectories have their own .dirindex)
+            if ((tokens[1] == "..") || (tokens[1].find_first_of("/\\") != std::string::npos)) {
+                SG_LOG(SG_TERRASYNC, SG_WARN, "malformed .dirindex file: invalid filename in line '" << line << "', (ignoring line)" );
+                continue;
+            }
+
             children.push_back(ChildInfo(typeData == "f" ? ChildInfo::FileType : ChildInfo::DirectoryType, tokens[1], tokens[2]));
 
             if (tokens.size() > 3) {
@@ -656,16 +560,7 @@ private:
     HTTPRepoPrivate* _repository;
     std::string _relativePath; // in URL and file-system space
 
-    typedef enum
-    {
-        NotUpdated,
-        UpdateInProgress,
-        Updated,
-        UpdateFailed,
-        DoNotUpdate
-    } State;
 
-    State _state;
 };
 
 HTTPRepository::HTTPRepository(const SGPath& base, HTTP::Client *cl) :
@@ -703,38 +598,14 @@ SGPath HTTPRepository::fsBase() const
 
 void HTTPRepository::update()
 {
-    _d->rootDir->markSubtreeAsNeedingUpdate();
-    _d->updateWaiting();
-}
-
-void HTTPRepository::setEntireRepositoryMode()
-{
-    if (!_d->updateEverything) {
-        // this is a one-way decision
-        _d->updateEverything = true;
-    }
-
-    // probably overkill but not expensive so let's check everything
-    // we have in case someone did something funky and switched from partial
-    // to 'whole repo' updating.
-    _d->rootDir->markSubtreeAsEnabled();
-}
-
-
-void HTTPRepository::addSubpath(const std::string& relPath)
-{
-    if (_d->updateEverything) {
-        SG_LOG(SG_TERRASYNC, SG_WARN, "called HTTPRepository::addSubpath but updating everything");
+    if (_d->isUpdating) {
         return;
     }
 
-    _d->updatePaths.push_back(relPath);
-
-    HTTPDirectory* dir = _d->getOrCreateDirectory(relPath);
-    dir->markSubtreeAsEnabled();
-    dir->markAncestorChainAsEnabled();
-
-    _d->updateWaiting();
+    _d->status = REPO_NO_ERROR;
+    _d->isUpdating = true;
+    _d->failures.clear();
+    _d->updateDir(_d->rootDir, std::string(), 0);
 }
 
 bool HTTPRepository::isDoingSync() const
@@ -794,6 +665,12 @@ HTTPRepository::failure() const
     return _d->status;
 }
 
+    void HTTPRepoGetRequest::cancel()
+    {
+        _directory->repository()->http->cancelRequest(this, "Reposiotry cancelled");
+        _directory = 0;
+    }
+
     class FileGetRequest : public HTTPRepoGetRequest
     {
     public:
@@ -825,7 +702,6 @@ HTTPRepository::failure() const
         virtual void onDone()
         {
             file->close();
-
             if (responseCode() == 200) {
                 std::string hash = strutils::encodeHex(sha1_result(&hashContext), HASH_LENGTH);
                 _directory->didUpdateFile(fileName, hash, contentSize());
@@ -862,7 +738,7 @@ HTTPRepository::failure() const
         std::string fileName; // if empty, we're getting the directory itself
         SGPath pathInRepo;
         simgear::sha1nfo hashContext;
-        std::auto_ptr<SGBinaryFile> file;
+        std::unique_ptr<SGBinaryFile> file;
     };
 
     class DirGetRequest : public HTTPRepoGetRequest
@@ -922,8 +798,8 @@ HTTPRepository::failure() const
                     of.write(body.data(), body.size());
                     of.close();
                     _directory->dirIndexUpdated(hash);
-                } else {
-                    _directory->markAsUpToDate();
+
+                    //SG_LOG(SG_TERRASYNC, SG_INFO, "updated dir index " << _directory->absolutePath());
                 }
 
                 _directory->repository()->totalDownloaded += contentSize();
@@ -934,7 +810,7 @@ HTTPRepository::failure() const
                     SGTimeStamp st;
                     st.stamp();
                     _directory->updateChildrenBasedOnHash();
-                    SG_LOG(SG_TERRASYNC, SG_INFO, "after update of:" << _directory->absolutePath() << " child update took:" << st.elapsedMSec());
+                    SG_LOG(SG_TERRASYNC, SG_DEBUG, "after update of:" << _directory->absolutePath() << " child update took:" << st.elapsedMSec());
                 } catch (sg_exception& ) {
                     _directory->failedToUpdate(HTTPRepository::REPO_ERROR_IO);
                 }
@@ -999,7 +875,6 @@ HTTPRepository::failure() const
 
     HTTP::Request_ptr HTTPRepoPrivate::updateDir(HTTPDirectory* dir, const std::string& hash, size_t sz)
     {
-        dir->markAsUpdating();
         RepoRequestPtr r(new DirGetRequest(dir, hash));
         r->setContentSize(sz);
         makeRequest(r);
@@ -1166,25 +1041,6 @@ HTTPRepository::failure() const
 
         HTTPDirectory* d = new HTTPDirectory(this, path);
         directories.push_back(d);
-        if (updateEverything) {
-            d->markAsEnabled();
-        } else {
-            string_list::const_iterator s;
-            bool shouldUpdate = false;
-
-            for (s = updatePaths.begin(); s != updatePaths.end(); ++s) {
-                size_t minLen = std::min(path.size(), s->size());
-                if (s->compare(0, minLen, path, 0, minLen) == 0) {
-                    shouldUpdate = true;
-                    break;
-                }
-            } // of paths iteration
-
-            if (shouldUpdate) {
-                d->markAsEnabled();
-            }
-        }
-
         return d;
     }
 
@@ -1280,21 +1136,4 @@ HTTPRepository::failure() const
         SG_LOG(SG_TERRASYNC, SG_WARN, "failed to update entry:" << relativePath << " code:" << fileStatus);
     }
 
-    void HTTPRepoPrivate::updateWaiting()
-    {
-        if (!isUpdating) {
-            status = HTTPRepository::REPO_NO_ERROR;
-            isUpdating = true;
-            failures.clear();
-        }
-
-        // find to-be-updated sub-trees and kick them off
-        rootDir->updateIfWaiting(std::string(), 0);
-
-        // maybe there was nothing to do
-        if (activeRequests.empty()) {
-            isUpdating = false;
-        }
-    }
-
 } // of namespace simgear

simgear/io/HTTPRepository.hxx

@@ -57,13 +57,6 @@ public:
 
     virtual void update();
 
-    /**
-     * set if we should sync the entire repository
-     */
-    void setEntireRepositoryMode();
-
-    void addSubpath(const std::string& relPath);
-
     virtual bool isDoingSync() const;
 
     virtual ResultCode failure() const;
@@ -80,7 +73,7 @@ public:
 private:
     bool isBare() const;
 
-    std::auto_ptr<HTTPRepoPrivate> _d;
+    std::unique_ptr<HTTPRepoPrivate> _d;
 };
 
 } // of namespace simgear

simgear/io/HTTPRequest.cxx

@@ -132,15 +132,15 @@ Request::HTTPVersion decodeHTTPVersion(const std::string& v)
 //------------------------------------------------------------------------------
 void Request::responseStart(const std::string& r)
 {
-    const int maxSplit = 2; // HTTP/1.1 nnn reason-string
+    const int maxSplit = 2; // HTTP/1.1 nnn reason-string?
     string_list parts = strutils::split(r, NULL, maxSplit);
-    if (parts.size() != 3) {
+    if (parts.size() < 2) {
         throw sg_io_exception("bad HTTP response:" + r);
     }
 
     _responseVersion = decodeHTTPVersion(parts[0]);
     _responseStatus = strutils::to_int(parts[1]);
-    _responseReason = parts[2];
+    _responseReason = parts.size() > 2 ? parts[2] : "";
 
     setReadyState(STATUS_RECEIVED);
 }

simgear/io/iostreams/CMakeLists.txt

@@ -0,0 +1,23 @@
+include (SimGearComponent)
+
+set(HEADERS
+    sgstream.hxx
+    gzfstream.hxx
+    gzcontainerfile.hxx
+    )
+
+set(SOURCES
+    sgstream.cxx
+    gzfstream.cxx
+    gzcontainerfile.cxx
+    )
+
+simgear_component(IOStreams io/iostreams "${SOURCES}" "${HEADERS}")
+
+if(ENABLE_TESTS)
+
+  add_executable(test_streams sgstream_test.cxx )
+  target_link_libraries(test_streams ${TEST_LIBS})
+  add_test(streams ${EXECUTABLE_OUTPUT_PATH}/test_streams)
+
+endif(ENABLE_TESTS)

simgear/io/iostreams/gzcontainerfile.hxx

@@ -22,7 +22,7 @@
 #define GZ_CONTAINER_FILE_HXX
 
 #include <string>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 class SGPropertyNode;
 

simgear/io/iostreams/gzfstream.cxx

@@ -34,7 +34,7 @@
 #include <simgear/structure/exception.hxx>
 
 #include <zlib.h>
-#include "zfstream.hxx"
+#include "gzfstream.hxx"
 
 //
 // Construct a gzfilebuf object.

simgear/io/iostreams/gzfstream.hxx

@@ -1,5 +1,5 @@
 /**
- * \file zfstream.hxx
+ * \file gzfstream.hxx
  * A C++ I/O streams interface to the zlib gz* functions.
  */
 
@@ -24,8 +24,8 @@
 //
 // $Id$
 
-#ifndef _zfstream_hxx
-#define _zfstream_hxx
+#ifndef _gzfstream_hxx
+#define _gzfstream_hxx
 
 #include <simgear/compiler.h>
 
@@ -164,4 +164,4 @@ struct gzofstream_base
     gzfilebuf gzbuf;
 };
 
-#endif // _zfstream_hxx
+#endif // _gzfstream_hxx

simgear/io/iostreams/sgstream.hxx

@@ -40,7 +40,7 @@
 #include <string>
 
 #include <zlib.h>
-#include <simgear/misc/zfstream.hxx>
+#include <simgear/io/iostreams/gzfstream.hxx>
 
 class SGPath;
 

simgear/io/iostreams/sgstream_test.cxx

@@ -1,52 +1,53 @@
 #include <iostream>
-#include <fstream>
+#include <cstdlib> // for EXIT_SUCCESS
 
-#include <cstdlib> // for EXIT_FAILURE
-
-using std::ofstream;
+using std::string;
 using std::cout;
 using std::endl;
 
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/misc/test_macros.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/misc/sg_path.hxx>
+#include <simgear/misc/sg_dir.hxx>
 
 int main()
 {
-    const char* fileName = "testfile";
+    const string fileName = "testfile";
+    simgear::Dir tmpDir = simgear::Dir::tempDir("FlightGear");
+    tmpDir.setRemoveOnDestroy();
+    SGPath p(tmpDir.path() / fileName);
+
     {
-       ofstream f;
-       f.open(fileName, std::ios::binary | std::ios::trunc | std::ios::out);
+       sg_ofstream f(p, std::ios::binary | std::ios::trunc | std::ios::out);
        f.write("first line ends with line-feed\n"
            "second line ends with just a cr\r"
            "third line ends with both\r\n"
            "fourth line as well\r\n"
            "fifth line is another CR/LF line\r\n"
            "end of test\r\n", 158);
-       f.close();
-   }
+    }
 
-    SGPath p(fileName);
    sg_gzifstream sg(p);
    std::string stuff;
    sg >> skipeol;
    sg >> stuff;
-   if (stuff != "second") return EXIT_FAILURE;
+   SG_CHECK_EQUAL(stuff, "second");
    cout << "Detection of LF works." << endl;
 
    sg >> skipeol;
    sg >> stuff;
-   if (stuff != "third") return EXIT_FAILURE;
+   SG_CHECK_EQUAL(stuff, "third");
    cout << "Detection of CR works." << endl;
 
    sg >> skipeol;
    sg >> stuff;
-   if (stuff != "fourth") return EXIT_FAILURE;
+   SG_CHECK_EQUAL(stuff, "fourth");
    cout << "Detection of CR/LF works." << endl;
 
    sg >> skipeol;
    sg >> skipeol;
    sg >> stuff;
-   if (stuff != "end") return EXIT_FAILURE;
+   SG_CHECK_EQUAL(stuff, "end");
    cout << "Detection of 2 following CR/LF lines works." << endl;
 
    return EXIT_SUCCESS;

simgear/io/iostreams/zlibstream.cxx

@@ -0,0 +1,717 @@
+// -*- coding: utf-8 -*-
+//
+// zlibstream.cxx --- IOStreams classes for working with RFC 1950 and RFC 1952
+//                    compression formats (respectively known as the zlib and
+//                    gzip formats)
+//
+// Copyright (C) 2017  Florent Rougon
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+#include <string>
+#include <ios>                  // std::streamsize
+#include <istream>
+#include <algorithm>
+#include <stdexcept>
+#include <unordered_map>
+#include <limits>               // std::numeric_limits
+#include <cstddef>              // std::size_t, std::ptrdiff_t
+#include <cassert>
+
+#include <zlib.h>
+
+#include <simgear/io/iostreams/zlibstream.hxx>
+#include <simgear/misc/strutils.hxx>
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/debug/logstream.hxx>
+
+using std::string;
+using traits = std::char_traits<char>;
+
+
+// Private utility function
+static string zlibErrorMessage(const z_stream& zstream, int errorCode)
+{
+  string res;
+  std::unordered_map<int, string> errorCodeToMessageMap = {
+    {Z_OK,            "zlib: no error (code Z_OK)"},
+    {Z_STREAM_END,    "zlib stream end"},
+    {Z_NEED_DICT,     "zlib: Z_NEED_DICT"},
+    {Z_STREAM_ERROR,  "zlib stream error"},
+    {Z_DATA_ERROR,    "zlib data error"},
+    {Z_MEM_ERROR,     "zlib memory error"},
+    {Z_BUF_ERROR,     "zlib buffer error"},
+    {Z_VERSION_ERROR, "zlib version error"}
+  };
+
+  if (errorCode == Z_ERRNO) {
+    res = simgear::strutils::error_string(errno);
+  } else if (zstream.msg != nullptr) {
+    // Caution: this only works if the zstream structure hasn't been
+    // deallocated!
+    res = "zlib: " + string(zstream.msg);
+  } else {
+    try {
+      res = errorCodeToMessageMap.at(errorCode);
+    } catch (const std::out_of_range&) {
+      res = string("unknown zlib error (code " + std::to_string(errorCode) +
+                   ")");
+    }
+  }
+
+  return res;
+}
+
+// Return the largest value that can be represented with zlib's uInt type,
+// which is the type of z_stream.avail_in and z_stream.avail_out, hence the
+// function name.
+static std::size_t zlibMaxChunkSize()
+{
+  uLong flags = ::zlibCompileFlags();
+  std::size_t res;
+
+  switch (flags & 0x3) {
+  case 0x3:
+    SG_LOG(SG_IO, SG_WARN,
+           "Unknown size for zlib's uInt type (code 3). Will assume 64 bits, "
+           "but the actual value is probably higher.");
+    // No 'break' here, this is intentional.
+  case 0x2:
+    res = 0xFFFFFFFFFFFFFFFF;   // 2^64 - 1
+    break;
+  case 0x1:
+    res = 0xFFFFFFFF;             // 2^32 - 1
+    break;
+  case 0x0:
+    res = 0xFFFF;                 // 2^16 - 1
+    break;
+  default:
+    throw std::logic_error("It should be impossible to get here.");
+  }
+
+  return res;
+}
+
+static const std::size_t zlibMaxChunk = ::zlibMaxChunkSize();
+
+
+namespace simgear
+{
+
+// ***************************************************************************
+// *                      ZlibAbstractIStreambuf class                       *
+// ***************************************************************************
+
+// Common initialization. Subclasses must complete the z_stream struct
+// initialization with a call to deflateInit2() or inflateInit2(), typically.
+ZlibAbstractIStreambuf::ZlibAbstractIStreambuf(std::istream& iStream,
+                                               const SGPath& path,
+                                               char* inBuf,
+                                               std::size_t inBufSize,
+                                               char *outBuf,
+                                               std::size_t outBufSize,
+                                               std::size_t putbackSize)
+  : _iStream(iStream),
+    _path(path),
+    _inBuf(inBuf),
+    _inBufSize(inBufSize),
+    _outBuf(outBuf),
+    _outBufSize(outBufSize),
+    _putbackSize(putbackSize)
+
+{
+  assert(_inBufSize > 0);
+  assert(_putbackSize >= 0);    // guaranteed unless the type is changed...
+  assert(_putbackSize < _outBufSize);
+
+  if (_inBuf == nullptr) {
+    _inBuf = new char[_inBufSize];
+    _inBufMustBeFreed = true;
+  }
+
+  if (_outBuf == nullptr) {
+    _outBuf = new char[_outBufSize];
+    _outBufMustBeFreed = true;
+  }
+
+  _inBufEndPtr = _inBuf;
+  // The input buffer is empty.
+  _zstream.next_in = reinterpret_cast<unsigned char *>(_inBuf);
+  _zstream.avail_in = 0;
+  // ZLib's documentation says its init functions such as inflateInit2() might
+  // consume stream input, therefore let's fill the input buffer now. This
+  // way, constructors of derived classes just have to call the appropriate
+  // ZLib init function: the data will already be in place.
+  getInputData();
+
+  // Force underflow() of the stream buffer on the first read. We could use
+  // some other value, but I avoid nullptr in order to be sure we can always
+  // reliably compare the three pointers with < and >, as well as compute the
+  // difference between any two of them.
+  setg(_outBuf, _outBuf, _outBuf);
+}
+
+ZlibAbstractIStreambuf::~ZlibAbstractIStreambuf()
+{
+  if (_inBufMustBeFreed) {
+    delete[] _inBuf;
+  }
+
+  if (_outBufMustBeFreed) {
+    delete[] _outBuf;
+  }
+}
+
+// Fill or refill the output buffer, and update the three pointers
+// corresponding to eback(), gptr() and egptr().
+int ZlibAbstractIStreambuf::underflow()
+{
+  if (_allFinished) {
+    return traits::eof();
+  }
+
+  // According to the C++11 standard: “The public members of basic_streambuf
+  // call this virtual function only if gptr() is null or gptr() >= egptr()”.
+  // Still, it seems some people do the following or similar (maybe in case
+  // underflow() is called “incorrectly”?). See for instance N. Josuttis, The
+  // C++ Standard Library (1st edition), p. 584. One sure thing is that it
+  // can't hurt (except performance, marginally), so let's do it.
+  if (gptr() < egptr()) {
+    return traits::to_int_type(*gptr());
+  }
+
+  assert(gptr() == egptr());
+  assert(egptr() - eback() >= 0);
+  std::size_t nbPutbackChars = std::min(
+    static_cast<std::size_t>(egptr() - eback()), // OK because egptr() >= eback()
+    _putbackSize);
+  std::copy(egptr() - nbPutbackChars, egptr(),
+            _outBuf + _putbackSize - nbPutbackChars);
+
+  setg(_outBuf + _putbackSize - nbPutbackChars, // start of putback area
+       _outBuf + _putbackSize,                  // start of obtained data
+       fillOutputBuffer());                     // one-past-end of obtained data
+
+  return (gptr() == egptr()) ? traits::eof() : traits::to_int_type(*gptr());
+}
+
+// Simple utility method for fillOutputBuffer(), used to improve readability.
+// Return the remaining space available in the output buffer, where zlib can
+// write.
+std::size_t
+ZlibAbstractIStreambuf::fOB_remainingSpace(unsigned char* nextOutPtr) const
+{
+  std::ptrdiff_t remainingSpaceInOutBuf = _outBuf + _outBufSize -
+    reinterpret_cast<char*>(nextOutPtr);
+  assert(remainingSpaceInOutBuf >= 0);
+
+  return static_cast<std::size_t>(remainingSpaceInOutBuf);
+}
+
+// Simple method for dealing with the Z_BUF_ERROR code that may be returned
+// by zlib's deflate() and inflate() methods.
+[[ noreturn ]] void ZlibAbstractIStreambuf::handleZ_BUF_ERROR() const
+{
+  switch (operationType()) {
+  case OPERATION_TYPE_DECOMPRESSION:
+  {
+    string message = (_path.isNull()) ?
+      "Got Z_BUF_ERROR from zlib while decompressing a stream. The stream "
+      "was probably incomplete."
+      :
+      "Got Z_BUF_ERROR from zlib during decompression. The compressed stream "
+      "was probably incomplete.";
+    // When _path.isNull(), sg_location(_path) is equivalent to sg_location()
+    throw sg_io_exception(message, sg_location(_path));
+  }
+  case OPERATION_TYPE_COMPRESSION:
+    throw std::logic_error(
+      "Called ZlibAbstractIStreambuf::handleZ_BUF_ERROR() with "
+      "operationType() == OPERATION_TYPE_DECOMPRESSION");
+  default:
+    throw std::logic_error(
+      "Unexpected operationType() in "
+      "ZlibAbstractIStreambuf::handleZ_BUF_ERROR(): " +
+      std::to_string(operationType()));
+  }
+}
+
+// Fill or refill the output buffer. Return a pointer to the first unused char
+// in _outBuf (i.e., right after the data written by this method, if any;
+// otherwise: _outBuf + _putbackSize).
+char* ZlibAbstractIStreambuf::fillOutputBuffer()
+{
+  bool allInputRead = false;
+  std::size_t remainingSpaceInOutBuf;
+  int retCode;
+
+  // We have to do these unpleasant casts, because zlib uses pointers to
+  // unsigned char for its input and output buffers, while the IOStreams
+  // library in the C++ standard uses plain char pointers...
+  _zstream.next_out = reinterpret_cast<unsigned char*>(_outBuf + _putbackSize);
+  remainingSpaceInOutBuf = fOB_remainingSpace(_zstream.next_out);
+
+  while (remainingSpaceInOutBuf > 0) {
+    // This does fit in a zlib uInt: that's the whole point of zlibMaxChunk.
+    _zstream.avail_out = static_cast<uInt>(
+      std::min(remainingSpaceInOutBuf, zlibMaxChunk));
+
+    if (_zstream.avail_in == 0 && !allInputRead) {
+      // Get data from _iStream, store it in _inBuf
+      allInputRead = getInputData();
+    }
+
+    // Make zlib process some data (compress or decompress it). This updates
+    // _zstream.{avail,next}_{in,out} (4 fields of the z_stream struct).
+    retCode = zlibProcessData();
+
+    if (retCode == Z_BUF_ERROR) {
+      handleZ_BUF_ERROR();            // doesn't return
+    } else if (retCode == Z_STREAM_END) {
+      assert(_zstream.avail_in == 0); // all of _inBuf must have been used
+      _allFinished = true;
+      break;
+    } else if (retCode < 0) {         // negative codes are errors
+      throw sg_io_exception(::zlibErrorMessage(_zstream, retCode),
+                            sg_location(_path));
+    }
+
+    remainingSpaceInOutBuf = fOB_remainingSpace(_zstream.next_out);
+  }
+
+  return reinterpret_cast<char*>(_zstream.next_out);
+}
+
+// This method provides input data to zlib:
+//   - if data is already available in _inBuf, it updates _zstream.avail_in
+//     accordingly (using the largest possible amount given _zstream.avail_in's
+//     type, i.e., uInt);
+//   - otherwise, it reads() as much data as possible into _inBuf from
+//     _iStream and updates _zstream.avail_in to tell zlib about this new
+//     available data (again: largest possible amount given the uInt type).
+//
+// This method must be called only when _zstream.avail_in == 0, which means
+// zlib has read everything we fed it (and does *not* mean, by the way, that
+// the input buffer starting at _inBuf is empty; this is because the buffer
+// size might exceed what can be represented by an uInt).
+//
+// On return:
+//   - either EOF has been reached for _iStream, and the return value is true;
+//   - or _zstream.avail_in > 0, and the return value is false.
+//
+// Note: don't read more in the previous paragraph concerning the state on
+//       return. In the first case, there is *no guarantee* about
+//       _zstream.avail_in's value; in the second case, there is *no guarantee*
+//       about whether EOF has been reached for _iStream.
+bool ZlibAbstractIStreambuf::getInputData()
+{
+  bool allInputRead = false;
+
+  assert(_zstream.avail_in == 0);
+  std::ptrdiff_t alreadyAvailable =
+    _inBufEndPtr - reinterpret_cast<char*>(_zstream.next_in);
+  assert(alreadyAvailable >= 0);
+
+  // Data already available?
+  if (alreadyAvailable > 0) {
+    _zstream.avail_in = static_cast<uInt>(
+      std::min(static_cast<std::size_t>(alreadyAvailable),
+               zlibMaxChunk));
+    return allInputRead;
+  }
+
+  if (_inBufEndPtr == _inBuf + _inBufSize) { // buffer full, rewind
+    _inBufEndPtr = _inBuf;
+    _zstream.next_in = reinterpret_cast<unsigned char*>(_inBuf);
+  }
+
+  // Fill the input buffer (as much as possible)
+  while (_inBufEndPtr < _inBuf + _inBufSize && !_iStream.eof()) {
+    std::streamsize nbCharsToRead = std::min(
+      _inBuf + _inBufSize - _inBufEndPtr,
+      std::numeric_limits<std::streamsize>::max()); // max we can pass to read()
+    _iStream.read(_inBufEndPtr, nbCharsToRead);
+
+    if (_iStream.bad()) {
+      string errMsg = simgear::strutils::error_string(errno);
+      string msgStart = (_path.isNull()) ?
+        "Error while reading from a stream" : "Read error";
+      throw sg_io_exception(msgStart + ": " + errMsg, sg_location(_path));
+    }
+
+    // Could be zero if at EOF
+    std::streamsize nbCharsRead = _iStream.gcount();
+    // std::streamsize is a signed integral type!
+    assert(0 <= nbCharsRead);
+    _inBufEndPtr += nbCharsRead;
+  }
+
+  std::ptrdiff_t availableChars =
+    _inBufEndPtr - reinterpret_cast<char*>(_zstream.next_in);
+  assert(availableChars >= 0);
+  _zstream.avail_in = static_cast<uInt>(
+    std::min(static_cast<std::size_t>(availableChars),
+             zlibMaxChunk));
+
+  if (_iStream.eof()) {
+    allInputRead = true;
+  } else {
+    // Trying to rewind a fully read std::istringstream with seekg() can lead
+    // to a weird state, where the stream doesn't return any character but
+    // doesn't report EOF either. Make sure we are not in this situation.
+    assert(_zstream.avail_in > 0);
+  }
+
+  return allInputRead;
+}
+
+// Implementing this method is optional, but should provide better
+// performance. It makes zlib write the data directly in the buffer starting
+// at 'dest'. Without it, the data would go through an intermediate buffer
+// (_outBuf) before being copied to its (hopefully) final destination.
+std::streamsize ZlibAbstractIStreambuf::xsgetn(char* dest, std::streamsize n)
+{
+  std::size_t remaining = static_cast<std::size_t>(n);
+  std::size_t chunkSize;
+  std::ptrdiff_t avail;
+  const char* origGptr = gptr();
+  char* writePtr = dest;        // we'll need dest later -> work with a copy
+
+  // First, let's take data present in our internal buffer (_outBuf)
+  while (remaining > 0) {
+    avail = egptr() - gptr();   // number of available chars in _outBuf
+    if (avail == 0) {           // our internal buffer is empty
+      break;
+    }
+
+    chunkSize = std::min(remaining, static_cast<std::size_t>(avail));
+    std::copy(gptr(), gptr() + chunkSize, writePtr);
+    gbump(chunkSize);
+    writePtr += chunkSize;
+    remaining -= chunkSize;
+  }
+
+  if (remaining == 0) {
+    // Everything we needed was already in _outBuf. The putback area is set up
+    // as it should between eback() and the current gptr(), so we are fine to
+    // return.
+    return n;
+  }
+
+  // Now, let's make it so that the remaining data we need is directly written
+  // to the destination area, without going through _outBuf.
+  _zstream.next_out = reinterpret_cast<unsigned char*>(writePtr);
+  bool allInputRead = false;
+  int retCode;
+
+  while (remaining > 0) {
+    chunkSize = std::min(remaining, zlibMaxChunk);
+    // It does fit in a zlib uInt: that's the whole point of zlibMaxChunk.
+    _zstream.avail_out = static_cast<uInt>(chunkSize);
+
+    if (_zstream.avail_in == 0 && !allInputRead) {
+      allInputRead = getInputData();
+    }
+
+    // Make zlib process some data (compress or decompress). This updates
+    // _zstream.{avail,next}_{in,out} (4 fields of the z_stream struct).
+    retCode = zlibProcessData();
+    // chunkSize - _zstream.avail_out is the nb of chars written by zlib
+    remaining -= chunkSize - _zstream.avail_out;
+
+    if (retCode == Z_BUF_ERROR) {
+      handleZ_BUF_ERROR();            // doesn't return
+    } else if (retCode == Z_STREAM_END) {
+      assert(_zstream.avail_in == 0); // all of _inBuf must have been used
+      _allFinished = true;
+      break;
+    } else if (retCode < 0) {   // negative codes are errors
+      throw sg_io_exception(::zlibErrorMessage(_zstream, retCode),
+                            sg_location(_path));
+    }
+  }
+
+  // Finally, prepare the putback area.
+  //
+  // We could use reinterpret_cast<char*>(_zstream.next_out) everywhere below,
+  // except it is hardly readable. This points after the latest data we wrote.
+  writePtr = reinterpret_cast<char*>(_zstream.next_out);
+
+  // There are two buffers containing characters we potentially have to copy
+  // to the putback area: the one starting at _outBuf and the one starting at
+  // dest. In the following diagram, ***** represents those from _outBuf,
+  // which are right-aligned at origGptr[1], and the series of # represents
+  // those in the [dest, writePtr) address range:
+  //
+  // |_outBuf  |eback() *****|origGptr      |_outBuf + _outBufSize
+  //
+  // |dest #################|writePtr
+  //
+  // Together, these two memory blocks logically form a contiguous stream of
+  // chars we gave to the “client”: *****#################. All we have to do
+  // now is copy the appropriate amount of chars from this logical stream to
+  // the putback area, according to _putbackSize. These chars are the last
+  // ones in said stream (i.e., right portion of *****#################), but
+  // we have to copy them in order of increasing address to avoid possible
+  // overlapping problems in _outBuf. This is because some of the chars to
+  // copy may be located before _outBuf + _putbackSize (i.e., already be in
+  // the putback area).
+  //
+  //   [1] This means that the last char represented by a star is at address
+  //       origGptr-1.
+  assert(writePtr - dest >= 0);
+  std::size_t inDestBuffer = static_cast<std::size_t>(writePtr - dest);
+  assert(origGptr - eback() >= 0);
+  std::size_t nbPutbackChars = std::min(
+    static_cast<std::size_t>(origGptr - eback()) + inDestBuffer,
+    _putbackSize);
+  std::size_t nbPutbackCharsToGo = nbPutbackChars;
+
+  // chunkSize has an unsigned type; precomputing it before the following test
+  // wouldn't work.
+  // Are there chars in _outBuf that need to be copied to the putback area?
+  if (nbPutbackChars > inDestBuffer) {
+    chunkSize = nbPutbackChars - inDestBuffer; // yes, this number
+    std::copy(origGptr - chunkSize, origGptr,
+              _outBuf + _putbackSize - nbPutbackChars);
+    nbPutbackCharsToGo -= chunkSize;
+  }
+
+  std::copy(writePtr - nbPutbackCharsToGo, writePtr,
+            _outBuf + _putbackSize - nbPutbackCharsToGo);
+  setg(_outBuf + _putbackSize - nbPutbackChars, // start of putback area
+       _outBuf + _putbackSize,                  // the buffer for pending,
+       _outBuf + _putbackSize);                 // available data is empty
+
+  std::streamsize rem = static_cast<std::streamsize>(remaining);
+  // This is guaranteed because n is of type std::streamsize and the whole
+  // algorithm ensures that 0 <= remaining <= n.
+  assert(rem >= 0);
+  assert(static_cast<std::size_t>(rem) == remaining);
+  assert(n - rem >= 0);
+  // Total number of chars copied.
+  return n - rem;
+}
+
+// ***************************************************************************
+// *                     ZlibCompressorIStreambuf class                      *
+// ***************************************************************************
+
+ZlibCompressorIStreambuf::ZlibCompressorIStreambuf(
+  std::istream& iStream,
+  const SGPath& path,
+  int compressionLevel,
+  ZLibCompressionFormat format,
+  ZLibMemoryStrategy memStrategy,
+  char* inBuf,
+  std::size_t inBufSize,
+  char *outBuf,
+  std::size_t outBufSize,
+  std::size_t putbackSize)
+  : ZlibAbstractIStreambuf(iStream, path, inBuf, inBufSize, outBuf, outBufSize,
+                           putbackSize)
+{
+  zStreamInit(compressionLevel, format, memStrategy);
+}
+
+ZlibCompressorIStreambuf::~ZlibCompressorIStreambuf()
+{
+  int retCode = deflateEnd(&_zstream); // deallocate the z_stream struct
+  if (retCode != Z_OK) {
+    // In C++11, we can't throw exceptions from a destructor.
+    SG_LOG(SG_IO, SG_ALERT, "ZlibCompressorIStreambuf: " <<
+           ::zlibErrorMessage(_zstream, retCode));
+  }
+}
+
+ZlibAbstractIStreambuf::OperationType
+ZlibCompressorIStreambuf::operationType() const
+{
+  return OPERATION_TYPE_COMPRESSION;
+}
+
+void ZlibCompressorIStreambuf::zStreamInit(int compressionLevel,
+                                          ZLibCompressionFormat format,
+                                          ZLibMemoryStrategy memStrategy)
+{
+  int windowBits, memLevel;
+
+  // Intentionally not listing ZLIB_COMPRESSION_FORMAT_AUTODETECT here (it is
+  // only for decompression!)
+  switch (format) {
+  case ZLIB_COMPRESSION_FORMAT_ZLIB:
+    windowBits = 15;
+    break;
+  case ZLIB_COMPRESSION_FORMAT_GZIP:
+    windowBits = 31;
+    break;
+  default:
+    throw std::logic_error("Unexpected compression format: " +
+                           std::to_string(format));
+  }
+
+  switch (memStrategy) {
+  case ZLIB_FAVOR_MEMORY_OVER_SPEED:
+    memLevel = 8;
+    break;
+  case ZLIB_FAVOR_SPEED_OVER_MEMORY:
+    memLevel = 9;
+    break;
+  default:
+    throw std::logic_error("Unexpected memory strategy: " +
+                           std::to_string(memStrategy));
+  }
+
+  _zstream.zalloc = Z_NULL;     // No custom memory allocation routines
+  _zstream.zfree = Z_NULL;      // Ditto. Therefore, the 'opaque' field won't
+  _zstream.opaque = Z_NULL;     // be used, actually.
+
+  int retCode = deflateInit2(&_zstream, compressionLevel, Z_DEFLATED,
+                             windowBits, memLevel, Z_DEFAULT_STRATEGY);
+  if (retCode != Z_OK) {
+    throw sg_io_exception(::zlibErrorMessage(_zstream, retCode),
+                          sg_location(_path));
+  }
+}
+
+int ZlibCompressorIStreambuf::zlibProcessData()
+{
+  // Compress as much data as possible given _zstream.avail_in and
+  // _zstream.avail_out. The input data starts at _zstream.next_in, the output
+  // at _zstream.next_out, and these four fields are all updated by this call
+  // to reflect exactly the amount of data zlib has consumed and produced.
+  return deflate(&_zstream, _zstream.avail_in ? Z_NO_FLUSH : Z_FINISH);
+}
+
+// ***************************************************************************
+// *                    ZlibDecompressorIStreambuf class                     *
+// ***************************************************************************
+
+ZlibDecompressorIStreambuf::ZlibDecompressorIStreambuf(
+  std::istream& iStream,
+  const SGPath& path,
+  ZLibCompressionFormat format,
+  char* inBuf,
+  std::size_t inBufSize,
+  char *outBuf,
+  std::size_t outBufSize,
+  std::size_t putbackSize)
+  : ZlibAbstractIStreambuf(iStream, path, inBuf, inBufSize, outBuf, outBufSize,
+                           putbackSize)
+{
+  zStreamInit(format);
+}
+
+ZlibDecompressorIStreambuf::~ZlibDecompressorIStreambuf()
+{
+  int retCode = inflateEnd(&_zstream); // deallocate the z_stream struct
+  if (retCode != Z_OK) {
+    // In C++11, we can't throw exceptions from a destructor.
+    SG_LOG(SG_IO, SG_ALERT, "ZlibDecompressorIStreambuf: " <<
+           ::zlibErrorMessage(_zstream, retCode));
+  }
+}
+
+ZlibAbstractIStreambuf::OperationType
+ZlibDecompressorIStreambuf::operationType() const
+{
+  return OPERATION_TYPE_DECOMPRESSION;
+}
+
+void ZlibDecompressorIStreambuf::zStreamInit(ZLibCompressionFormat format)
+{
+  int windowBits;
+
+  switch (format) {
+  case ZLIB_COMPRESSION_FORMAT_ZLIB:
+    windowBits = 15;
+    break;
+  case ZLIB_COMPRESSION_FORMAT_GZIP:
+    windowBits = 31;
+    break;
+  case ZLIB_COMPRESSION_FORMAT_AUTODETECT:
+    windowBits = 47;            // 47 = 32 + 15
+    break;
+  default:
+    throw std::logic_error("Unexpected compression format: " +
+                           std::to_string(format));
+  }
+
+  _zstream.zalloc = Z_NULL;     // No custom memory allocation routines
+  _zstream.zfree = Z_NULL;      // Ditto. Therefore, the 'opaque' field won't
+  _zstream.opaque = Z_NULL;     // be used, actually.
+
+  int retCode = inflateInit2(&_zstream, windowBits);
+  if (retCode != Z_OK) {
+    throw sg_io_exception(::zlibErrorMessage(_zstream, retCode),
+                          sg_location(_path));
+  }
+}
+
+int ZlibDecompressorIStreambuf::zlibProcessData()
+{
+  // Decompress as much data as possible given _zstream.avail_in and
+  // _zstream.avail_out. The input data starts at _zstream.next_in, the output
+  // at _zstream.next_out, and these four fields are all updated by this call
+  // to reflect exactly the amount of data zlib has consumed and produced.
+  return inflate(&_zstream, _zstream.avail_in ? Z_NO_FLUSH : Z_FINISH);
+}
+
+// ***************************************************************************
+// *                       ZlibCompressorIStream class                       *
+// ***************************************************************************
+
+ZlibCompressorIStream::ZlibCompressorIStream(std::istream& iStream,
+                                             const SGPath& path,
+                                             int compressionLevel,
+                                             ZLibCompressionFormat format,
+                                             ZLibMemoryStrategy memStrategy,
+                                             char* inBuf,
+                                             std::size_t inBufSize,
+                                             char *outBuf,
+                                             std::size_t outBufSize,
+                                             std::size_t putbackSize)
+  : _streamBuf(iStream, path, compressionLevel, format, memStrategy, inBuf,
+               inBufSize, outBuf, outBufSize, putbackSize)
+{
+  rdbuf(&_streamBuf);            // Associate _streamBuf to 'this'
+}
+
+ZlibCompressorIStream::~ZlibCompressorIStream()
+{ }
+
+// ***************************************************************************
+// *                      ZlibDecompressorIStream class                      *
+// ***************************************************************************
+
+ZlibDecompressorIStream::ZlibDecompressorIStream(std::istream& iStream,
+                                                 const SGPath& path,
+                                                 ZLibCompressionFormat format,
+                                                 char* inBuf,
+                                                 std::size_t inBufSize,
+                                                 char *outBuf,
+                                                 std::size_t outBufSize,
+                                                 std::size_t putbackSize)
+  : _streamBuf(iStream, path, format, inBuf, inBufSize, outBuf, outBufSize,
+               putbackSize)
+{
+  rdbuf(&_streamBuf);            // Associate _streamBuf to 'this'
+}
+
+ZlibDecompressorIStream::~ZlibDecompressorIStream()
+{ }
+
+} // of namespace simgear

simgear/io/iostreams/zlibstream.hxx

@@ -0,0 +1,401 @@
+// -*- coding: utf-8 -*-
+//
+// zlibstream.hxx --- IOStreams classes for working with RFC 1950 and RFC 1952
+//                    compression formats (respectively known as the zlib and
+//                    gzip formats)
+//
+// Copyright (C) 2017  Florent Rougon
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+#ifndef SG_ZLIBSTREAM_HXX
+#define SG_ZLIBSTREAM_HXX
+
+#include <iosfwd>
+#include <ios>                  // std::streamsize
+#include <zlib.h>               // struct z_stream
+
+#include <simgear/misc/sg_path.hxx>
+
+// This file contains:
+//
+//  - two stream buffer classes (ZlibCompressorIStreambuf and
+//    ZlibDecompressorIStreambuf), both based on the same abstract class:
+//    ZlibAbstractIStreambuf;
+//
+//  - two std::istream subclasses (ZlibCompressorIStream and
+//    ZlibDecompressorIStream), each creating and using the corresponding
+//    stream buffer class from the previous item.
+//
+// All these allow one to work with RFC 1950 and RFC 1952 compression
+// formats, respectively known as the zlib and gzip formats.
+//
+// These classes are *input* streaming classes, which means they can
+// efficiently handle arbitrary amounts of data without using any disk
+// space nor increasing amounts of memory, and allow “client code” to pull
+// exactly as much data as it wants at any given time, resuming later
+// when it is ready to handle the next chunk.
+//
+// So, for example, assuming you've created an instance of
+// ZlibCompressorIStream (bound to some input stream of your choice, let's
+// call it iStream), you could read 512 bytes of data from it, and you
+// would get the first 512 bytes of *compressed* data corresponding to what
+// iStream provided. Then you could resume at any time and ask for the next
+// 512 bytes of compressed data (or any other amount), etc.
+//
+// Therefore, these classes are well suited, among others, to compress or
+// decompress data streams while at the same time packing the result into
+// discrete chunks or packets with size constraints (you can think of the
+// process as making sausages :).
+//
+// The input being in each case an std::istream (for compressing as well as
+// for decompressing), it can be tied to an arbitrary source: a file with
+// sg_ifstream or std::ifstream, a memory buffer with std::istringstream or
+// std::stringstream, a TCP socket with a custom std::streambuf subclass[1]
+// to interface with the sockets API, etc.
+//
+//   [1] Possibly wrapped in an std::istream.
+//
+// The stream buffer classes upon which ZlibCompressorIStream and
+// ZlibDecompressorIStream are built have an xsgetn() implementation that
+// avoids useless copies of data by asking zlib to write directly to the
+// destination buffer. This xsgetn() method is used when calling read() on
+// the std::istream subclasses, or sgetn() if you are using the stream
+// buffer classes directly (i.e., ZlibCompressorIStreambuf and
+// ZlibDecompressorIStreambuf). Other std::istream methods may instead rely
+// only on the internal buffer and the underflow() method, and therefore be
+// less efficient for large amounts of data. You may want to take a look at
+// zlibstream_test.cxx to see various ways of using these classes.
+//
+// In case you use std::istream& operator>>(std::istream&, std::string&) or
+// its overload friends, beware that it splits fields at spaces, and by
+// default ignores spaces at the beginning of a field (cf. std::skipws,
+// std::noskipws and friends). As far as I understand it, most of these
+// operators are mainly intended in the IOStreams library to be used to
+// read an int here, a double there, a space-delimited string afterwards,
+// etc. (the exception could be the overload writing to a stream buffer,
+// however it doesn't seem to be very efficient on my system with GNU
+// libstdc++ [it is not using xsgetn()], so beware also of this one if you
+// are handling large amounts of data). For moderately complex or large
+// input handling, I'd suggest to use std::istream methods such as read(),
+// gcount() and getline() (std::getline() can be useful too). Or directly
+// use the stream buffer classes, in particular with sgetn().
+
+
+namespace simgear
+{
+
+enum ZLibCompressionFormat {
+  ZLIB_COMPRESSION_FORMAT_ZLIB = 0,
+  ZLIB_COMPRESSION_FORMAT_GZIP,
+  ZLIB_COMPRESSION_FORMAT_AUTODETECT
+};
+
+enum ZLibMemoryStrategy {
+  ZLIB_FAVOR_MEMORY_OVER_SPEED = 0,
+  ZLIB_FAVOR_SPEED_OVER_MEMORY
+};
+
+// Abstract base class for both the compressor and decompressor stream buffers.
+class ZlibAbstractIStreambuf: public std::streambuf
+{
+public:
+  /**
+   *  @brief Constructor for ZlibAbstractIStreambuf.
+   *  @param iStream     Input stream to read from.
+   *  @param path        Optional path to the file corresponding to iStream,
+   *                     if any. Only used for error messages.
+   *  @param inBuf       Pointer to the input buffer (data read from iStream is
+   *                     written there before being compressed or decompressed).
+   *                     If nullptr, the buffer is allocated on the heap in the
+   *                     constructor and deallocated in the destructor.
+   *  @param inBufSize   Size of the input buffer, in chars.
+   *  @param outBuf      Pointer to the output buffer. Data is read by zlib
+   *                     from the input buffer, compressed or decompressed, and
+   *                     the result is directly written to the output buffer.
+   *                     If nullptr, the buffer is allocated on the heap in the
+   *                     constructor and deallocated in the destructor.
+   *  @param outBufSize  Size of the output buffer, in chars.
+   *  @param putbackSize Size of the putback area inside the output buffer, in
+   *                     chars.
+   *
+   *  It is required that putbackSize < outBufSize. It is guaranteed that,
+   *  if at least putbackSize chars have been read without any putback (or
+   *  unget) operation intermixed, then at least putbackSize chars can be
+   *  put back in sequence. If you don't need this feature, use zero for the
+   *  putbackSize value (the default) for best performance.
+  */
+  explicit ZlibAbstractIStreambuf(std::istream& iStream,
+                                  const SGPath& path = SGPath(),
+                                  char* inBuf = nullptr,
+                                  std::size_t inBufSize = 262144,
+                                  char* outBuf = nullptr,
+                                  std::size_t outBufSize = 262144,
+                                  std::size_t putbackSize = 0);
+  ZlibAbstractIStreambuf(const ZlibAbstractIStreambuf&) = delete;
+  ZlibAbstractIStreambuf& operator=(const ZlibAbstractIStreambuf&) = delete;
+  ~ZlibAbstractIStreambuf();
+
+protected:
+  enum OperationType {
+    OPERATION_TYPE_COMPRESSION = 0,
+    OPERATION_TYPE_DECOMPRESSION
+  };
+
+  virtual OperationType operationType() const = 0;
+
+  // Either compress or decompress a chunk of data (depending on the
+  // particular subclass implementation). The semantics are the same as for
+  // zlib's inflate() and deflate() functions applied to member _zstream,
+  // concerning 1) the return value and 2) where, and how much to read and
+  // write (which thus depends on _zstream.avail_in, _zstream.next_in,
+  // _zstream.avail_out and _zstream.next_out).
+  virtual int zlibProcessData() = 0;
+
+  // The input stream, from which data is read before being processed by zlib
+  std::istream& _iStream;
+  // Corresponding path, if any (default-constructed SGPath instance otherwise)
+  const SGPath _path;
+  // Structure used to communicate with zlib
+  z_stream _zstream;
+
+private:
+  // Callback whose role is to refill the output buffer when it's empty and
+  // the “client” tries to read more.
+  int underflow() override;
+  // Optional override when subclassing std::streambuf. This is the most
+  // efficient way of reading several characters (as soon as we've emptied the
+  // output buffer, data is written by zlib directly to the destination
+  // buffer).
+  std::streamsize xsgetn(char* dest, std::streamsize n) override;
+  // Make sure there is data to read in the input buffer, or signal EOF.
+  bool getInputData();
+  // Utility method for fillOutputBuffer()
+  std::size_t fOB_remainingSpace(unsigned char* nextOutPtr) const;
+  // Fill the output buffer (using zlib functions) as much as possible.
+  char* fillOutputBuffer();
+  // Utility method
+  [[ noreturn ]] void handleZ_BUF_ERROR() const;
+
+  bool _allFinished = false;
+
+  // The buffers
+  // ~~~~~~~~~~~
+  //
+  // The input buffer receives data obtained from _iStream, before it is
+  // processed by zlib. In underflow(), zlib reads from this buffer it and
+  // writes the resulting data(*) to the output buffer. Then we point the
+  // standard std::streambuf pointers (gptr() and friends) directly towards
+  // the data inside that output buffer. xsgetn() is even more optimized: it
+  // first empties the output buffer, then makes zlib write the remaining data
+  // directly to the destination area.
+  //
+  //   (*) Compressed or decompressed, depending on the particular
+  //       implementation of zlibProcessData() in each subclass.
+  char* _inBuf;
+  const std::size_t _inBufSize;
+  // _inBufEndPtr points right after the last data retrieved from _iStream and
+  // stored into _inBuf. When zlib has read all such data, _zstream.next_in is
+  // equal to _inBufEndPtr (after proper casting). Except in this particular
+  // situation, only _zstream.next_in <= _inBufEndPtr is guaranteed.
+  char* _inBufEndPtr;
+  // Layout of the _outBuf buffer:
+  //
+  // |_outBuf  <putback area>  |_outBuf + _putbackSize    |_outBuf + _outBufSize
+  //
+  // The first _putbackSize chars in _outBuf are reserved for the putback area
+  // (right-aligned at _outBuf + _putbackSize). The actual output buffer thus
+  // starts at _outBuf + _putbackSize. At any given time for callers of this
+  // class, the number of characters that can be put back is gptr() - eback().
+  // It may be lower than _putbackSize if we haven't read that many characters
+  // yet. It may also be larger if gptr() > _outBuf + _putbackSize, i.e.,
+  // when the buffer for pending data is non-empty.
+  //
+  // At any given time, callers should see:
+  //
+  //   _outBuf <= eback() <= _outBuf + _putbackSize <= gptr() <= egptr()
+  //                                                <= _outBuf + _outBufSize
+  //
+  // (hoping this won't get out of sync with the code!)
+  char *_outBuf;
+  const std::size_t _outBufSize;
+  // Space reserved for characters to be put back into the stream. Must be
+  // strictly smaller than _outBufSize (this is checked in the constructor).
+  // It is guaranteed that this number of chars can be put back, except of
+  // course if we haven't read that many characters from the input stream yet.
+  // If characters are buffered in _outBuf[2], then it may be that more
+  // characters than _putbackSize can be put back (it is essentially a matter
+  // for std::streambuf of decreasing the “next pointer for the input
+  // sequence”, i.e., the one returned by gptr()).
+  //
+  //   [2] In the [_outBuf + _putbackSize, _outBuf + _outBufSize) area.
+  const std::size_t _putbackSize;
+
+  // Since the constructor optionally allocates memory for the input and
+  // output buffers, these members allow the destructor to know which buffers
+  // have to be deallocated, if any.
+  bool _inBufMustBeFreed = false;
+  bool _outBufMustBeFreed = false;
+};
+
+
+// Stream buffer class for compressing data. Input data is obtained from an
+// std::istream instance; the corresponding compressed data can be read using
+// the standard std::streambuf read interface (mainly: sbumpc(), sgetc(),
+// snextc(), sgetn(), sputbackc(), sungetc()). Input, uncompressed data is
+// “pulled” as needed for the amount of compressed data requested by the
+// “client” using the methods I just listed.
+class ZlibCompressorIStreambuf: public ZlibAbstractIStreambuf
+{
+public:
+  // Same parameters as for ZlibAbstractIStreambuf, except:
+  //
+  //   compressionLevel: in the [0,9] range. 0 means no compression at all.
+  //                     Levels 1 to 9 yield compressed data, with 1 giving
+  //                     the highest compression speed but worst compression
+  //                     ratio, and 9 the highest compression ratio but lowest
+  //                     compression speed.
+  //   format            either ZLIB_COMPRESSION_FORMAT_ZLIB or
+  //                     ZLIB_COMPRESSION_FORMAT_GZIP
+  //   memStrategy       either ZLIB_FAVOR_MEMORY_OVER_SPEED or
+  //                     ZLIB_FAVOR_SPEED_OVER_MEMORY
+  explicit ZlibCompressorIStreambuf(
+    std::istream& iStream,
+    const SGPath& path = SGPath(),
+    int compressionLevel = Z_DEFAULT_COMPRESSION,
+    ZLibCompressionFormat format = ZLIB_COMPRESSION_FORMAT_ZLIB,
+    ZLibMemoryStrategy memStrategy = ZLIB_FAVOR_SPEED_OVER_MEMORY,
+    char* inBuf = nullptr,
+    std::size_t inBufSize = 262144,
+    char* outBuf = nullptr,
+    std::size_t outBufSize = 262144,
+    std::size_t putbackSize = 0);
+  ZlibCompressorIStreambuf(const ZlibCompressorIStreambuf&) = delete;
+  ZlibCompressorIStreambuf& operator=(const ZlibCompressorIStreambuf&) = delete;
+  ~ZlibCompressorIStreambuf();
+
+protected:
+  OperationType operationType() const override;
+  // Initialize the z_stream struct used by zlib
+  void zStreamInit(int compressionLevel, ZLibCompressionFormat format,
+                   ZLibMemoryStrategy memStrategy);
+  // Call zlib's deflate() function to compress data.
+  int zlibProcessData() override;
+};
+
+
+// Stream buffer class for decompressing data. Input data is obtained from an
+// std::istream instance; the corresponding decompressed data can be read
+// using the standard std::streambuf read interface (mainly: sbumpc(),
+// sgetc(), snextc(), sgetn(), sputbackc(), sungetc()). Input, compressed data
+// is “pulled” as needed for the amount of uncompressed data requested by the
+// “client” using the methods I just listed.
+class ZlibDecompressorIStreambuf: public ZlibAbstractIStreambuf
+{
+public:
+  // Same parameters as for ZlibAbstractIStreambuf, except:
+  //
+  //   format            ZLIB_COMPRESSION_FORMAT_ZLIB,
+  //                     ZLIB_COMPRESSION_FORMAT_GZIP or
+  //                     ZLIB_COMPRESSION_FORMAT_AUTODETECT
+  explicit ZlibDecompressorIStreambuf(
+    std::istream& iStream,
+    const SGPath& path = SGPath(),
+    ZLibCompressionFormat format = ZLIB_COMPRESSION_FORMAT_ZLIB,
+    char* inBuf = nullptr,
+    std::size_t inBufSize = 262144,
+    char* outBuf = nullptr,
+    std::size_t outBufSize = 262144,
+    std::size_t putbackSize = 0); // default optimized for speed
+  ZlibDecompressorIStreambuf(const ZlibDecompressorIStreambuf&) = delete;
+  ZlibDecompressorIStreambuf& operator=(const ZlibDecompressorIStreambuf&)
+                                                                      = delete;
+  ~ZlibDecompressorIStreambuf();
+
+protected:
+  OperationType operationType() const override;
+  void zStreamInit(ZLibCompressionFormat format);
+  int zlibProcessData() override;
+};
+
+// std::istream subclass for compressing data. Input data is obtained from an
+// std::istream instance; the corresponding compressed data can be read using
+// the standard std::istream interface (read(), readsome(), gcount(), get(),
+// getline(), operator>>(), peek(), putback(), ignore(), unget()... plus
+// operator overloads such as istream& operator>>(istream&, string&) as
+// defined in <string>, and std::getline()). Input, uncompressed data is
+// “pulled” as needed for the amount of compressed data requested by the
+// “client”.
+//
+// To get data efficiently from an instance of this class, use its read()
+// method (typically in conjunction with gcount(), inside a loop).
+class ZlibCompressorIStream: public std::istream
+{
+public:
+  // Same parameters as for ZlibCompressorIStreambuf
+  explicit ZlibCompressorIStream(
+    std::istream& iStream,
+    const SGPath& path = SGPath(),
+    int compressionLevel = Z_DEFAULT_COMPRESSION,
+    ZLibCompressionFormat format = ZLIB_COMPRESSION_FORMAT_ZLIB,
+    ZLibMemoryStrategy memStrategy = ZLIB_FAVOR_SPEED_OVER_MEMORY,
+    char* inBuf = nullptr,
+    std::size_t inBufSize = 262144,
+    char* outBuf = nullptr,
+    std::size_t outBufSize = 262144,
+    std::size_t putbackSize = 0); // default optimized for speed
+  ZlibCompressorIStream(const ZlibCompressorIStream&) = delete;
+  ZlibCompressorIStream& operator=(const ZlibCompressorIStream&) = delete;
+  ~ZlibCompressorIStream();
+
+private:
+  ZlibCompressorIStreambuf _streamBuf;
+};
+
+// std::istream subclass for decompressing data. Input data is obtained from
+// an std::istream instance; the corresponding decompressed data can be read
+// using the standard std::istream interface (read(), readsome(), gcount(),
+// get(), getline(), operator>>(), peek(), putback(), ignore(), unget()...
+// plus operator overloads such as istream& operator>>(istream&, string&) as
+// defined in <string>, and std::getline()). Input, compressed data is
+// “pulled” as needed for the amount of uncompressed data requested by the
+// “client”.
+//
+// To get data efficiently from an instance of this class, use its read()
+// method (typically in conjunction with gcount(), inside a loop).
+class ZlibDecompressorIStream: public std::istream
+{
+public:
+  // Same parameters as for ZlibDecompressorIStreambuf
+  explicit ZlibDecompressorIStream(
+    std::istream& iStream,
+    const SGPath& path = SGPath(),
+    ZLibCompressionFormat format = ZLIB_COMPRESSION_FORMAT_ZLIB,
+    char* inBuf = nullptr,
+    std::size_t inBufSize = 262144,
+    char* outBuf = nullptr,
+    std::size_t outBufSize = 262144,
+    std::size_t putbackSize = 0); // default optimized for speed
+  ZlibDecompressorIStream(const ZlibDecompressorIStream&) = delete;
+  ZlibDecompressorIStream& operator=(const ZlibDecompressorIStream&) = delete;
+  ~ZlibDecompressorIStream();
+
+private:
+  ZlibDecompressorIStreambuf _streamBuf;
+};
+
+} // of namespace simgear
+
+#endif  // of SG_ZLIBSTREAM_HXX

simgear/io/iostreams/zlibstream_test.cxx

@@ -0,0 +1,562 @@
+// -*- coding: utf-8 -*-
+//
+// zlibstream_test.cxx --- Automated tests for zlibstream.cxx / zlibstream.hxx
+//
+// Copyright (C) 2017  Florent Rougon
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+#include <ios>                  // std::basic_ios, std::streamsize...
+#include <iostream>             // std::ios_base, std::cerr, etc.
+#include <sstream>
+#include <array>
+#include <random>
+#include <limits>               // std::numeric_limits
+#include <functional>           // std::bind()
+#include <cassert>
+#include <cstdlib>              // EXIT_SUCCESS
+#include <cstddef>              // std::size_t
+#include <cstring>              // strcmp()
+
+using std::string;
+using std::cout;
+using std::cerr;
+using traits = std::char_traits<char>;
+
+#include <simgear/misc/test_macros.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/io/iostreams/zlibstream.hxx>
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/misc/sg_dir.hxx>
+
+// In many tests below, I use very small buffer sizes. Of course, this is bad
+// for performance. The reason I do it this way is simply because it better
+// exercises the code we want to *test* here (we are more likely to find bugs
+// if the buffer(s) has/have to be refilled one or more times). Similarly, if
+// you don't need the putback feature in non-test code, best performance is
+// achieved with putback size = 0.
+//
+// I suggest you read roundTripWithIStreams() below to see how to use the
+// classes most efficiently (especially the comments!).
+
+static std::default_random_engine randomNumbersGenerator;
+
+// Sample string for tests
+static const string lipsum = "\
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque congue ornare\n\
+congue. Mauris mollis est et porttitor condimentum. Vivamus laoreet blandit\n\
+odio eget consectetur. Etiam quis magna eu enim luctus pretium. In et\n\
+tristique nunc, non efficitur metus. Nullam efficitur tristique velit.\n\
+Praesent et luctus nunc. Mauris eros eros, rutrum at molestie quis, egestas et\n\
+lorem. Ut nulla turpis, eleifend sed mauris ac, faucibus molestie nulla.\n\
+Quisque viverra vel turpis nec efficitur. Proin non rutrum velit. Nam sodales\n\
+metus felis, eu pharetra velit posuere ut.\n\
+\n\
+Suspendisse pellentesque tincidunt ligula et pretium. Etiam id justo mauris.\n\
+Aenean porta, sapien in suscipit tristique, metus diam malesuada dui, in porta\n\
+felis mi non felis. Etiam vel aliquam leo, non vehicula magna. Proin justo\n\
+massa, ultrices at porta eu, tempor in ligula. Duis enim ipsum, dictum quis\n\
+ultricies et, tempus eu libero. Morbi vulputate libero ut dolor rutrum, a\n\
+imperdiet nibh egestas. Phasellus finibus massa vel tempus hendrerit. Nulla\n\
+lobortis est non ligula viverra, quis egestas ante hendrerit. Pellentesque\n\
+finibus mollis blandit. In ac sollicitudin mauris, eget dignissim mauris.";
+
+// Utility function: generate a random string whose length is in the
+// [minLen, maxLen] range.
+string randomString(string::size_type minLen, string::size_type maxLen)
+{
+  std::uniform_int_distribution<string::size_type> sLenDist(minLen, maxLen);
+  std::uniform_int_distribution<int> byteDist(0, 255);
+  auto randomByte = std::bind(byteDist, randomNumbersGenerator);
+
+  string::size_type len = sLenDist(randomNumbersGenerator);
+  string str;
+
+  while (str.size() < len) {
+    str += traits::to_char_type(randomByte());
+  }
+
+  return str;
+}
+
+// Utility function: perform a compression-decompression cycle on the input
+// string using the stream buffer classes:
+//
+//   1) Compress the input string, write the result to a temporary file using
+//      std::ostream& operator<<(streambuf* sb), where 'sb' points to a
+//      ZlibCompressorIStreambuf instance.
+//
+//   2) Close the temporary file to make sure all the data is flushed.
+//
+//   3) Create a ZlibDecompressorIStreambuf instance reading from the
+//      temporary file, then decompress to an std::ostringstream using
+//      std::ostream& operator<<(streambuf* sb), where 'sb' points to our
+//      ZlibDecompressorIStreambuf instance.
+//
+//   4) Compare the result with the input string.
+//
+// Of course, it is possible to do this without any temporary file, even
+// without any std::stringstream or such to hold the intermediate, compressed
+// data. See the other tests for actual compressor + decompressor pipelines.
+void pipeCompOrDecompIStreambufIntoOStream(const string& input)
+{
+  // Test “std::ostream << &ZlibCompressorIStreambuf”
+  std::istringstream input_ss(input);
+  simgear::ZlibCompressorIStreambuf compSBuf(input_ss, SGPath(), 9);
+  simgear::Dir tmpDir = simgear::Dir::tempDir("FlightGear");
+  tmpDir.setRemoveOnDestroy();
+  SGPath path = tmpDir.path() / "testFile.dat";
+  sg_ofstream oFile(path,
+                    std::ios::binary | std::ios::trunc | std::ios::out);
+
+  oFile << &compSBuf;
+  // Make sure the compressed stream is flushed, otherwise when we read the
+  // file back, decompression is likely to fail with Z_BUF_ERROR.
+  oFile.close();
+  SG_CHECK_EQUAL(compSBuf.sgetc(), EOF);
+
+  // Read back and decompress the data we've written to 'path', testing
+  // “std::ostream << &ZlibDecompressorIStreambuf”
+  sg_ifstream iFile(path, std::ios::binary | std::ios::in);
+  simgear::ZlibDecompressorIStreambuf decompSBuf(iFile, path);
+  std::ostringstream roundTripResult_ss;
+  // This is also possible, though maybe not as good for error detection:
+  //
+  //   decompSBuf >> roundTripResult_ss.rdbuf();
+  roundTripResult_ss << &decompSBuf;
+  SG_CHECK_EQUAL(decompSBuf.sgetc(), EOF);
+  SG_CHECK_EQUAL(roundTripResult_ss.str(), input);
+}
+
+// Perform a compression-decompression cycle on bunch of strings, using the
+// stream buffer classes directly (not the std::istream subclasses).
+void test_pipeCompOrDecompIStreambufIntoOStream()
+{
+  cerr << "Compression-decompression cycles using the stream buffer classes "
+    "directly\n";
+
+  pipeCompOrDecompIStreambufIntoOStream(""); // empty string
+  pipeCompOrDecompIStreambufIntoOStream("a");
+  pipeCompOrDecompIStreambufIntoOStream("lorem ipsum");
+
+  for (int i=0; i < 10; i++) {
+    pipeCompOrDecompIStreambufIntoOStream(randomString(0, 20));
+  }
+
+  for (int i=0; i < 10; i++) {
+    pipeCompOrDecompIStreambufIntoOStream(randomString(21, 1000));
+  }
+
+  assert(std::numeric_limits<string::size_type>::max() >= 65535);
+  for (int i=0; i < 10; i++) {
+    pipeCompOrDecompIStreambufIntoOStream(randomString(1000, 65535));
+  }
+}
+
+void test_StreambufBasicOperations()
+{
+  cerr << "Testing basic operations on ZlibDecompressorIStreambuf\n";
+
+  const string text = "0123456789abcdefghijklmnopqrstuvwxyz\nABCDEF\nGHIJK "
+    "LMNOPQ";
+  std::istringstream text_ss(text);
+
+  static constexpr std::size_t compInBufSize = 6;
+  static constexpr std::size_t compOutBufSize = 4;
+  static constexpr std::size_t compPutbackSize = 0;
+  simgear::ZlibCompressorIStreambuf compSBuf(
+    text_ss, SGPath(), 8, simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+    simgear::ZLIB_FAVOR_SPEED_OVER_MEMORY, nullptr, compInBufSize, nullptr,
+    compOutBufSize, compPutbackSize);
+  std::stringstream compressedOutput_ss;
+  compressedOutput_ss << &compSBuf;
+
+  static constexpr std::size_t decompInBufSize = 5;
+  static constexpr std::size_t decompOutBufSize = 4;
+  static constexpr std::size_t decompPutbackSize = 2;
+  simgear::ZlibDecompressorIStreambuf decompSBuf(
+    compressedOutput_ss, SGPath(), simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+    nullptr, decompInBufSize, nullptr, decompOutBufSize, decompPutbackSize);
+
+  int ch = decompSBuf.sgetc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '0');
+  ch = decompSBuf.sbumpc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '0');
+  ch = decompSBuf.sbumpc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '1');
+  ch = decompSBuf.snextc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '3');
+  ch = decompSBuf.sbumpc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '3');
+  ch = decompSBuf.sbumpc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '4');
+  ch = decompSBuf.sputbackc('4');
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '4');
+  ch = decompSBuf.sputbackc('u'); // doesn't match what we read from the stream
+  SG_VERIFY(ch == EOF);
+  ch = decompSBuf.sputbackc('3'); // this one does
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == '3');
+
+  static constexpr std::streamsize bufSize = 10;
+  char buf[bufSize];
+  // Most efficient way (with the underlying xsgetn()) to read several chars
+  // at once.
+  std::streamsize n = decompSBuf.sgetn(buf, bufSize);
+  SG_VERIFY(n == bufSize && string(buf, bufSize) == "3456789abc");
+
+  ch = decompSBuf.sungetc(); // same as sputbackc(), except no value to check
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == 'c');
+  ch = decompSBuf.sungetc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == 'b');
+  ch = decompSBuf.sbumpc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == 'b');
+  ch = decompSBuf.sputbackc('b'); // this one does
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == 'b');
+
+  n = decompSBuf.sgetn(buf, bufSize);
+  SG_VERIFY(n == bufSize && string(buf, bufSize) == "bcdefghijk");
+
+  ch = decompSBuf.sungetc();
+  SG_VERIFY(ch != EOF && traits::to_char_type(ch) == 'k');
+
+  static char buf2[64];
+  n = decompSBuf.sgetn(buf2, sizeof(buf2));
+  SG_VERIFY(n == 36 && string(buf2, n) == "klmnopqrstuvwxyz\nABCDEF\nGHIJK "
+            "LMNOPQ");
+
+  ch = decompSBuf.sbumpc();
+  SG_CHECK_EQUAL(ch, EOF);
+}
+
+// Utility function: take a string as input to compress and return the
+// compressed output as a string.
+string compress(const string& dataToCompress,
+                simgear::ZLibCompressionFormat compressionFormat,
+                int compressionLevel,
+                simgear::ZLibMemoryStrategy memStrategy,
+                std::size_t putbackSize,
+                SGPath path = SGPath())
+{
+  // Static storage is only okay for very small sizes like these, and because
+  // we won't call the function from several threads at the same time. Plain
+  // char arrays would be fine here, but I'll use std::array to show it can be
+  // used here too.
+  static std::array<char, 7> inBuf;
+  static std::array<char, 7> outBuf;
+
+  std::istringstream iss(dataToCompress);
+  simgear::ZlibCompressorIStream compressor(
+    iss, path, compressionLevel, compressionFormat, memStrategy,
+    &inBuf.front(), inBuf.size(), &outBuf.front(), outBuf.size(),
+    putbackSize);
+  compressor.exceptions(std::ios_base::badbit); // throw if badbit is set
+  std::ostringstream compressedData_ss;
+  compressor >> compressedData_ss.rdbuf();
+
+  return compressedData_ss.str();
+}
+
+void test_formattedInputFromDecompressor()
+{
+  cerr << "Testing ZlibDecompressorIStream >> std::string\n";
+
+  static char inBuf[6];
+  static char outBuf[15];
+  string compressed = compress(
+    lipsum, simgear::ZLIB_COMPRESSION_FORMAT_ZLIB, Z_BEST_COMPRESSION,
+    simgear::ZLIB_FAVOR_MEMORY_OVER_SPEED, /* putback size */ 0);
+  std::istringstream compressed_ss(compressed);
+
+  simgear::ZlibDecompressorIStream decompressor(
+    compressed_ss, SGPath(), simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+    inBuf, sizeof(inBuf), outBuf, sizeof(outBuf), /* putback size */ 1);
+  decompressor.exceptions(std::ios_base::badbit); // throw if badbit is set
+
+  int count = 0;
+  string word;
+
+  while (decompressor >> word) {
+    count++;
+  }
+
+  SG_CHECK_EQUAL(count, 175);   // Number of words in 'lipsum'
+  // If set, badbit would have caused an exception to be raised
+  SG_VERIFY(!decompressor.bad());
+
+  if (!decompressor.eof()) {
+    assert(decompressor.fail());
+    cerr << "Decompressor: stream extraction (operator>>) failed before "
+      "reaching EOF.\n";
+    SG_TEST_FAIL("Did not expect operator>> to fail with an std::string "
+                 "argument.");
+  }
+}
+
+void test_ZlibDecompressorIStream_readPutbackEtc()
+{
+  cerr << "Testing many operations on ZlibDecompressorIStream (read(), "
+    "putback(), etc.\n";
+
+  static char compInBuf[4];
+  static char compOutBuf[6];
+  static char decompInBuf[8];
+  static char decompOutBuf[5];
+  const string text = "0123456789abcdefghijklmnopqrstuvwxyz\nABCDEF\nGHIJK "
+    "LMNOPQ";
+  std::istringstream text_ss(text);
+
+  simgear::ZlibCompressorIStream compressor(
+    text_ss, SGPath(), Z_BEST_COMPRESSION,
+    simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+    simgear::ZLIB_FAVOR_MEMORY_OVER_SPEED,
+    compInBuf, sizeof(compInBuf), compOutBuf, sizeof(compOutBuf),
+    /* putback size */ 0);
+  compressor.exceptions(std::ios_base::badbit); // throw if badbit is set
+
+  // Use the compressor (subclass of std::istream) as input to the decompressor
+  simgear::ZlibDecompressorIStream decompressor(
+    compressor, SGPath(), simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+    decompInBuf, sizeof(decompInBuf), decompOutBuf, sizeof(decompOutBuf),
+    /* putback size */ 3);
+  decompressor.exceptions(std::ios_base::badbit);
+
+  {
+    static std::array<char, 17> buf;
+    decompressor.read(&buf.front(), 10);
+    SG_VERIFY(decompressor.good() && decompressor.gcount() == 10);
+    SG_CHECK_EQUAL(string(&buf.front(), 10), "0123456789");
+
+    SG_VERIFY(decompressor.putback('9'));
+    SG_VERIFY(decompressor.putback('8'));
+    SG_VERIFY(decompressor.putback('7'));
+
+    SG_VERIFY(decompressor.get(buf[10]));
+    SG_VERIFY(decompressor.read(&buf[11], 6));
+    SG_CHECK_EQUAL(string(&buf.front(), 17), "0123456789789abcd");
+  }
+
+  {
+    bool gotException = false;
+    try {
+      // 'Z' is not the last character read from the stream
+      decompressor.putback('Z');
+    } catch (std::ios_base::failure) {
+      gotException = true;
+    }
+    SG_VERIFY(gotException && decompressor.bad());
+  }
+
+  {
+    int c;
+
+    decompressor.clear();
+    // Check we can resume normally now that we've cleared the error state flags
+    c = decompressor.get();
+    SG_VERIFY(c != traits::eof() && traits::to_char_type(c) == 'e');
+
+    // unget() and get() in sequence
+    SG_VERIFY(decompressor.unget());
+    c = decompressor.get();
+    SG_VERIFY(c != traits::eof() && traits::to_char_type(c)== 'e');
+
+    // peek() looks at, but doesn't consume
+    c = decompressor.peek();
+    SG_VERIFY(c != traits::eof() && traits::to_char_type(c) == 'f');
+    c = decompressor.get();
+    SG_VERIFY(c != traits::eof() && traits::to_char_type(c)== 'f');
+  }
+
+  {
+    static std::array<char, 21> buf; // 20 chars + terminating NUL char
+
+    // std::istream::getline() will be stopped by \n after reading 20 chars
+    SG_VERIFY(decompressor.getline(&buf.front(), 25));
+    SG_VERIFY(decompressor.gcount() == 21 &&
+              !strcmp(&buf.front(), "ghijklmnopqrstuvwxyz"));
+
+    string str;
+    // std::getline() will be stopped by \n after 7 chars have been extracted,
+    // namely 6 chars plus the \n which is extracted and discarded.
+    SG_VERIFY(std::getline(decompressor, str));
+    SG_CHECK_EQUAL(str, "ABCDEF");
+
+    SG_VERIFY(decompressor.ignore(2));
+    SG_VERIFY(decompressor >> str);
+    SG_CHECK_EQUAL(str, "IJK");
+
+    static char buf2[5];
+    // Read up to sizeof(buf) chars, without waiting if not that many are
+    // immediately avaiable.
+    int nbCharsRead = decompressor.readsome(buf2, sizeof(buf2));
+
+    string rest(buf2, nbCharsRead);
+    do {
+      decompressor.read(buf2, sizeof(buf2));
+      rest += string(buf2, decompressor.gcount());
+    } while (decompressor);
+
+    SG_CHECK_EQUAL(rest, " LMNOPQ");
+  }
+
+  // If set, badbit would have caused an exception to be raised, anyway
+  SG_VERIFY(decompressor.eof() && !decompressor.bad());
+}
+
+// Utility function: parametrized round-trip test with a compressor +
+// decompressor pipeline.
+//
+//
+// Note: this is nice conceptually, allows to keep memory use constant even in
+//       case an arbitrary amount of data is passed through, and exercises the
+//       stream buffer classes well, however this technique is more than twice
+//       as slow on my computer than using an intermediate buffer like this:
+//
+//         std::stringstream compressedData_ss;
+//         compressor >> compressedData_ss.rdbuf();
+//
+//         simgear::ZlibDecompressorIStream decompressor(compressedData_ss,
+//                                                       SGPath(), ...
+void roundTripWithIStreams(
+  simgear::ZLibCompressionFormat compressionFormat,
+  int compressionLevel,
+  simgear::ZLibMemoryStrategy memStrategy,
+  std::size_t compInBufSize,
+  std::size_t compOutBufSize,
+  std::size_t decompInBufSize,
+  std::size_t decompOutBufSize,
+  std::size_t compPutbackSize,
+  std::size_t decompPutbackSize,
+  bool useAutoFormatForDecompression = false)
+{
+  const simgear::ZLibCompressionFormat decompFormat =
+    (useAutoFormatForDecompression) ?
+    simgear::ZLIB_COMPRESSION_FORMAT_AUTODETECT : compressionFormat;
+
+  std::istringstream lipsum_ss(lipsum);
+  // This tests the optional dynamic buffer allocation in ZlibAbstractIStreambuf
+  simgear::ZlibCompressorIStream compressor(
+    lipsum_ss, SGPath(), compressionLevel, compressionFormat, memStrategy,
+    nullptr, compInBufSize, nullptr, compOutBufSize, compPutbackSize);
+  compressor.exceptions(std::ios_base::badbit); // throw if badbit is set
+
+  // Use the compressor as input to the decompressor (pipeline). The
+  // decompressor uses read() with chunks that are as large as possible given
+  // the available space in its input buffer. These read() calls are served by
+  // ZlibCompressorIStreambuf::xsgetn(), which is efficient.
+  simgear::ZlibDecompressorIStream decompressor(
+    compressor, SGPath(), decompFormat,
+    nullptr, decompInBufSize, nullptr, decompOutBufSize, decompPutbackSize);
+  decompressor.exceptions(std::ios_base::badbit);
+  std::ostringstream roundTripResult;
+  // This, on the other hand, appears not to use xsgetn() (tested with the GNU
+  // libstdc++ from g++ 6.3.0, 20170124). This causes useless copying of the
+  // data to the decompressor output buffer, instead of writing it directly to
+  // roundTripResult's internal buffer. This is simple and nice in appearance,
+  // but if you are after performance, better use decompressor.read()
+  // (typically in conjunction with gcount(), inside a loop).
+  decompressor >> roundTripResult.rdbuf();
+  SG_CHECK_EQUAL(roundTripResult.str(), lipsum);
+}
+
+// Round-trip conversion with simgear::ZlibCompressorIStream and
+// simgear::ZlibDecompressorIStream, using various parameter combinations.
+void test_RoundTripMultiWithIStreams()
+{
+  cerr <<
+    "Compression-decompression cycles using the std::istream subclasses (many\n"
+    "combinations of buffer sizes and compression parameters tested)\n";
+
+  { // More variations on these later
+    const std::size_t compPutbackSize = 1;
+    const std::size_t decompPutbackSize = 1;
+
+    for (auto format: {simgear::ZLIB_COMPRESSION_FORMAT_ZLIB,
+          simgear::ZLIB_COMPRESSION_FORMAT_GZIP}) {
+      for (int compressionLevel: {1, 4, 7, 9}) {
+        for (auto memStrategy: {simgear::ZLIB_FAVOR_MEMORY_OVER_SPEED,
+              simgear::ZLIB_FAVOR_SPEED_OVER_MEMORY}) {
+          for (std::size_t compInBufSize: {3, 4}) {
+            for (std::size_t compOutBufSize: {3, 5}) {
+              for (std::size_t decompInBufSize: {3, 4}) {
+                for (std::size_t decompOutBufSize: {3, 4,}) {
+                  roundTripWithIStreams(
+                    format, compressionLevel, memStrategy, compInBufSize,
+                    compOutBufSize, decompInBufSize, decompOutBufSize,
+                    compPutbackSize, decompPutbackSize);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  {
+    const auto format = simgear::ZLIB_COMPRESSION_FORMAT_ZLIB;
+    const int compressionLevel = Z_DEFAULT_COMPRESSION;
+    const auto memStrategy = simgear::ZLIB_FAVOR_SPEED_OVER_MEMORY;
+
+    for (std::size_t compInBufSize: {3, 4, 31, 256, 19475}) {
+      for (std::size_t compOutBufSize: {3, 5, 9, 74, 4568}) {
+        for (std::size_t decompInBufSize: {3, 4, 256, 24568}) {
+          for (std::size_t decompOutBufSize: {3, 5, 42, 4568}) {
+            for (std::size_t compPutbackSize: {0, 1, 2}) {
+              for (std::size_t decompPutbackSize: {0, 1, 2}) {
+                roundTripWithIStreams(
+                  format, compressionLevel, memStrategy, compInBufSize,
+                  compOutBufSize, decompInBufSize, decompOutBufSize,
+                  compPutbackSize, decompPutbackSize);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  {
+    const std::size_t compInBufSize = 5;
+    const std::size_t compOutBufSize = 107;
+    const std::size_t decompInBufSize = 65536;
+    const std::size_t decompOutBufSize = 84;
+    int i = 0;
+
+    for (std::size_t compPutbackSize: {25, 40, 105}) {
+      for (std::size_t decompPutbackSize: {30, 60, 81}) {
+        const simgear::ZLibCompressionFormat compFormat = (i++ % 2) ?
+          simgear::ZLIB_COMPRESSION_FORMAT_ZLIB :
+          simgear::ZLIB_COMPRESSION_FORMAT_GZIP;
+
+        roundTripWithIStreams(
+          compFormat, Z_BEST_COMPRESSION, simgear::ZLIB_FAVOR_MEMORY_OVER_SPEED,
+          compInBufSize, compOutBufSize, decompInBufSize, decompOutBufSize,
+          compPutbackSize, decompPutbackSize,
+          /* automatic format detection for decompression */ true);
+      }
+    }
+  }
+}
+
+int main(int argc, char** argv)
+{
+  test_pipeCompOrDecompIStreambufIntoOStream();
+  test_StreambufBasicOperations();
+  test_RoundTripMultiWithIStreams();
+  test_formattedInputFromDecompressor();
+  test_ZlibDecompressorIStream_readPutbackEtc();
+
+  return EXIT_SUCCESS;
+}

simgear/io/sg_binobj.cxx

@@ -94,6 +94,17 @@ enum sgVertexAttributeTypes {
     SG_VA_FLOAT_3 =   0x00000800,
 };
 
+static gzFile gzFileFromSGPath(const SGPath& path, const char* mode)
+{
+  #if defined(SG_WINDOWS)
+  	std::wstring ws = path.wstr();
+  	return gzopen_w(ws.c_str(), mode);
+  #else
+    std::string ps = path.utf8Str();
+    return gzopen(ps.c_str(), mode);
+  #endif
+}
+
 enum sgPropertyTypes {
     SG_MATERIAL = 0,
     SG_INDEX_TYPES = 1,
@@ -534,15 +545,16 @@ bool SGBinObject::read_bin( const SGPath& file ) {
     fans_vas.clear();
     fan_materials.clear();
 
-    gzFile fp;
-    string f = file.local8BitStr();
-    if ( (fp = gzopen( f.c_str(), "rb" )) == NULL ) {
-        string filegz = f + ".gz";
-        if ( (fp = gzopen( filegz.c_str(), "rb" )) == NULL ) {
+    gzFile fp = gzFileFromSGPath(file, "rb");
+    if ( fp == NULL ) {
+        SGPath withGZ = file;
+        withGZ.concat(".gz");
+        fp = gzFileFromSGPath(withGZ, "rb");
+        if (fp == nullptr) {
             SG_LOG( SG_EVENT, SG_ALERT,
-               "ERROR: opening " << file << " or " << filegz << " for reading!");
+               "ERROR: opening " << file << " or " << withGZ << " for reading!");
 
-            throw sg_io_exception("Error opening for reading (and .gz)", sg_location(f));
+            throw sg_io_exception("Error opening for reading (and .gz)", sg_location(file));
         }
     }
 
@@ -957,9 +969,8 @@ bool SGBinObject::write_bin_file(const SGPath& file)
     SGPath file2(file);
     file2.create_dir( 0755 );
 
-    gzFile fp;
-    std::string localPath = file.local8BitStr();
-    if ( (fp = gzopen( localPath.c_str(), "wb9" )) == NULL ) {
+    gzFile fp = gzFileFromSGPath(file, "wb9");
+    if ( fp == nullptr ) {
         cout << "ERROR: opening " << file << " for writing!" << endl;
         return false;
     }

simgear/io/sg_file.cxx

@@ -69,16 +69,27 @@ SGFile::~SGFile() {
 bool SGFile::open( const SGProtocolDir d ) {
     set_dir( d );
 
-    std::string n = file_name.local8BitStr();
+#if defined(SG_WINDOWS)
+    std::wstring n = file_name.wstr();
+#else
+    std::string n = file_name.utf8Str();
+#endif
+
+
     if ( get_dir() == SG_IO_OUT ) {
-#ifdef _WIN32
+#if defined(SG_WINDOWS)
         int mode = _S_IREAD | _S_IWRITE;
+        fp = ::_wopen(n.c_str(), O_WRONLY | O_CREAT | O_TRUNC | extraoflags, mode);
 #else
         mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
-#endif
         fp = ::open( n.c_str(), O_WRONLY | O_CREAT | O_TRUNC | extraoflags, mode );
+#endif
     } else if ( get_dir() == SG_IO_IN ) {
+#if defined(SG_WINDOWS)
+        fp = ::_wopen( n.c_str(), O_RDONLY | extraoflags );
+#else
         fp = ::open( n.c_str(), O_RDONLY | extraoflags );
+#endif
     } else {
         SG_LOG( SG_IO, SG_ALERT,
             "Error:  bidirection mode not available for files." );
@@ -145,7 +156,7 @@ int SGFile::readline( char *buf, int length ) {
 	result = i;
     }
     lseek( fp, pos + result, SEEK_SET );
-    
+
     // just in case ...
     buf[ result ] = '\0';
 

simgear/io/test_DNS.cxx

@@ -4,6 +4,8 @@
 #include <map>
 #include <sstream>
 #include <errno.h>
+#include <thread>
+#include <atomic>
 
 #include <boost/algorithm/string/case_conv.hpp>
 
@@ -16,6 +18,7 @@
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/strutils.hxx>
 #include <simgear/timing/timestamp.hxx>
+#include <simgear/misc/test_macros.hxx>
 
 using std::cout;
 using std::cerr;
@@ -23,23 +26,80 @@ using std::endl;
 
 using namespace simgear;
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:'" << a << "'" << endl; \
-        exit(1); \
+
+class Watchdog
+{
+public:
+    Watchdog() : _interval(0), _timer(0), _running(false) {}
+    ~Watchdog() {
+      stop();
     }
 
+    void start(unsigned int milliseconds)
+    {
+        _interval = milliseconds;
+        _timer = 0;
+        _running = true;
+        _thread = std::thread(&Watchdog::loop, this);
+    }
+
+    void stop()
+    {
+        _running = false;
+        _thread.join();
+    }
+
+private:
+    unsigned int _interval;
+    std::atomic<unsigned int> _timer;
+    std::atomic<bool> _running;
+    std::thread _thread;
+
+    void loop()
+    {
+        while (_running)
+        {
+            _timer++;
+
+            if (_timer >= _interval)
+            {
+                _running = false;
+                std::cerr << "Failure: timeout." << endl;
+                exit(EXIT_FAILURE);
+            }
+
+            std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        }
+    }
+};
+
 
 int main(int argc, char* argv[])
 {
     sglog().setLogLevels( SG_ALL, SG_DEBUG );
 
-    DNS::Client cl;
-#define EXISTING_RECORD "terrasync.flightgear.org"
+    Watchdog watchdog;
+    watchdog.start(100);
 
-    // test existing NAPTR
-    // fgtest.t3r.de.                600        IN        NAPTR        999 99 "U" "test" "!^.*$!http://dnstest.flightgear.org/!" .
+    simgear::Socket::initSockets();
+
+
+    DNS::Client cl;
+
+    cout << "test update without prior pending request" << endl;
+    {
+        cout << "polling.";
+        for( int i = 0; i < 20; i++ ) {
+            SGTimeStamp::sleepForMSec(200);
+            cl.update(0);
+            cout << ".";
+            cout.flush();
+        }
+        cout << "done" << endl;
+    }
+
+#define EXISTING_RECORD "terrasync.flightgear.org"
+    cout << "test existing NAPTR: " EXISTING_RECORD << endl;
     {
         DNS::NAPTRRequest * naptrRequest = new DNS::NAPTRRequest(EXISTING_RECORD);
         DNS::Request_ptr r(naptrRequest);
@@ -58,15 +118,15 @@ int main(int argc, char* argv[])
             return EXIT_FAILURE;
         }
 
-        // test for ascending preference/order
+        cout << "test for ascending preference/order" << endl;
         int order = -1, preference = -1;
         for( DNS::NAPTRRequest::NAPTR_list::const_iterator it = naptrRequest->entries.begin(); it != naptrRequest->entries.end(); ++it ) {
             // currently only support "U" which implies empty replacement
-            COMPARE((*it)->flags, "U" );
-            COMPARE(naptrRequest->entries[0]->replacement, "" );
+            SG_CHECK_EQUAL((*it)->flags, "U" );
+            SG_CHECK_EQUAL(naptrRequest->entries[0]->replacement, "" );
 
             // currently only support ws20
-            COMPARE((*it)->service, "ws20" );
+            SG_CHECK_EQUAL((*it)->service, "ws20" );
 
             if( (*it)->order < order ) {
                 cerr << "NAPTR entries not ascending for field 'order'" << endl;
@@ -95,7 +155,7 @@ int main(int argc, char* argv[])
         }
     }
 
-    // test non-existing NAPTR
+    cout << "test non-existing NAPTR" << endl;
     {
         DNS::NAPTRRequest * naptrRequest = new DNS::NAPTRRequest("jurkxkqdiufqzpfvzqok.prozhqrlcaavbxifkkhf");
         DNS::Request_ptr r(naptrRequest);
@@ -109,7 +169,7 @@ int main(int argc, char* argv[])
             cerr << "timeout testing non-existing record." << endl;
             return EXIT_FAILURE;
         }
-        COMPARE(naptrRequest->entries.size(), 0 );
+        SG_CHECK_EQUAL(naptrRequest->entries.size(), 0 );
     }
 
     cout << "all tests passed ok" << endl;

simgear/io/test_HTTP.cxx

@@ -3,7 +3,7 @@
 #include <iostream>
 #include <map>
 #include <sstream>
-#include <errno.h>
+#include <cerrno>
 
 #include <boost/algorithm/string/case_conv.hpp>
 
@@ -17,6 +17,7 @@
 #include <simgear/misc/strutils.hxx>
 #include <simgear/timing/timestamp.hxx>
 #include <simgear/debug/logstream.hxx>
+#include <simgear/misc/test_macros.hxx>
 
 #include <curl/multi.h>
 
@@ -41,18 +42,6 @@ const char* BODY3 = "Cras ut neque nulla. Duis ut velit neque, sit amet "
 const unsigned int body2Size = 8 * 1024;
 char body2[body2Size];
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:'" << a << "'" << endl; \
-        exit(1); \
-    }
-
-#define VERIFY(a) \
-    if (!(a))  { \
-        cerr << "failed:" << #a << endl; \
-        exit(1); \
-    }
 
 class TestRequest : public HTTP::Request
 {
@@ -126,8 +115,9 @@ public:
             d << contentStr;
             push(d.str().c_str());
         } else if (path == "/test_headers") {
-            COMPARE(requestHeaders["X-Foo"], string("Bar"));
-            COMPARE(requestHeaders["X-AnotherHeader"], string("A longer value"));
+            SG_CHECK_EQUAL(requestHeaders["X-Foo"], string("Bar"));
+            SG_CHECK_EQUAL(requestHeaders["X-AnotherHeader"],
+                           string("A longer value"));
 
             string contentStr(BODY1);
             stringstream d;
@@ -304,7 +294,7 @@ public:
         } else if (path == "/test_put") {
           std::cerr << "sending PUT response" << std::endl;
 
-          COMPARE(buffer, BODY3);
+          SG_CHECK_EQUAL(buffer, BODY3);
           stringstream d;
           d << "HTTP/1.1 " << 204 << " " << reasonForCode(204) << "\r\n";
           d << "\r\n"; // final CRLF to terminate the headers
@@ -314,7 +304,7 @@ public:
 
           std::string entityStr = "http://localhost:2000/something.txt";
 
-          COMPARE(buffer, BODY3);
+          SG_CHECK_EQUAL(buffer, BODY3);
           stringstream d;
           d << "HTTP/1.1 " << 201 << " " << reasonForCode(201) << "\r\n";
           d << "Location:" << entityStr << "\r\n";
@@ -385,18 +375,18 @@ int main(int argc, char* argv[])
 
 // test URL parsing
     TestRequest* tr1 = new TestRequest("http://localhost.woo.zar:2000/test1?foo=bar");
-    COMPARE(tr1->scheme(), "http");
-    COMPARE(tr1->hostAndPort(), "localhost.woo.zar:2000");
-    COMPARE(tr1->host(), "localhost.woo.zar");
-    COMPARE(tr1->port(), 2000);
-    COMPARE(tr1->path(), "/test1");
+    SG_CHECK_EQUAL(tr1->scheme(), "http");
+    SG_CHECK_EQUAL(tr1->hostAndPort(), "localhost.woo.zar:2000");
+    SG_CHECK_EQUAL(tr1->host(), "localhost.woo.zar");
+    SG_CHECK_EQUAL(tr1->port(), 2000);
+    SG_CHECK_EQUAL(tr1->path(), "/test1");
 
     TestRequest* tr2 = new TestRequest("http://192.168.1.1/test1/dir/thing/file.png");
-    COMPARE(tr2->scheme(), "http");
-    COMPARE(tr2->hostAndPort(), "192.168.1.1");
-    COMPARE(tr2->host(), "192.168.1.1");
-    COMPARE(tr2->port(), 80);
-    COMPARE(tr2->path(), "/test1/dir/thing/file.png");
+    SG_CHECK_EQUAL(tr2->scheme(), "http");
+    SG_CHECK_EQUAL(tr2->hostAndPort(), "192.168.1.1");
+    SG_CHECK_EQUAL(tr2->host(), "192.168.1.1");
+    SG_CHECK_EQUAL(tr2->port(), 80);
+    SG_CHECK_EQUAL(tr2->path(), "/test1/dir/thing/file.png");
 
 // basic get request
     {
@@ -405,11 +395,11 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
     {
@@ -418,11 +408,11 @@ int main(int argc, char* argv[])
       cl.makeRequest(tr);
 
       waitForComplete(&cl, tr);
-      COMPARE(tr->responseCode(), 200);
-      COMPARE(tr->responseReason(), string("OK"));
-      COMPARE(tr->responseLength(), strlen(BODY3));
-      COMPARE(tr->responseBytesReceived(), strlen(BODY3));
-      COMPARE(tr->bodyData, string(BODY3));
+      SG_CHECK_EQUAL(tr->responseCode(), 200);
+      SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+      SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY3));
+      SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY3));
+      SG_CHECK_EQUAL(tr->bodyData, string(BODY3));
     }
 
     {
@@ -430,7 +420,7 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
     }
 
     {
@@ -441,11 +431,11 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
 // larger get request
@@ -458,9 +448,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseBytesReceived(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
     cerr << "testing chunked transfer encoding" << endl;
@@ -470,12 +460,12 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseBytesReceived(), 30);
-        COMPARE(tr->bodyData, "ABCDEFGHABCDEFABCDSTUVABCDSTUV");
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), 30);
+        SG_CHECK_EQUAL(tr->bodyData, "ABCDEFGHABCDEFABCDSTUVABCDSTUV");
     // check trailers made it too
-        COMPARE(tr->headers["x-foobar"], string("wibble"));
+        SG_CHECK_EQUAL(tr->headers["x-foobar"], string("wibble"));
     }
 
 // test 404
@@ -484,9 +474,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 404);
-        COMPARE(tr->responseReason(), string("not found"));
-        COMPARE(tr->responseLength(), 0);
+        SG_CHECK_EQUAL(tr->responseCode(), 404);
+        SG_CHECK_EQUAL(tr->responseReason(), string("not found"));
+        SG_CHECK_EQUAL(tr->responseLength(), 0);
     }
 
     cout << "done 404 test" << endl;
@@ -496,7 +486,7 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
     }
 
     cout << "done1" << endl;
@@ -506,9 +496,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
     cout << "done2" << endl;
@@ -518,9 +508,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
     cout << "done3" << endl;
 // test connectToHost failure
@@ -534,7 +524,7 @@ int main(int argc, char* argv[])
 
 
         const int HOST_NOT_FOUND_CODE = CURLE_COULDNT_RESOLVE_HOST;
-        COMPARE(tr->responseCode(), HOST_NOT_FOUND_CODE);
+        SG_CHECK_EQUAL(tr->responseCode(), HOST_NOT_FOUND_CODE);
     }
 
   cout << "testing abrupt close" << endl;
@@ -546,7 +536,7 @@ int main(int argc, char* argv[])
         waitForFailed(&cl, tr);
 
         const int SERVER_NO_DATA_CODE = CURLE_GOT_NOTHING;
-        COMPARE(tr->responseCode(), SERVER_NO_DATA_CODE);
+        SG_CHECK_EQUAL(tr->responseCode(), SERVER_NO_DATA_CODE);
     }
 
 cout << "testing proxy close" << endl;
@@ -557,9 +547,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
     {
@@ -568,9 +558,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseBytesReceived(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
 // pipelining
@@ -595,17 +585,17 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr3);
 
         waitForComplete(&cl, tr3);
-        VERIFY(tr->complete);
-        VERIFY(tr2->complete);
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_VERIFY(tr->complete);
+        SG_VERIFY(tr2->complete);
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseLength(), strlen(BODY3));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr2->responseLength(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY3));
 
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
 
-        COMPARE(testServer.connectCount(), 1);
+        SG_CHECK_EQUAL(testServer.connectCount(), 1);
     }
 
 // multiple requests with an HTTP 1.0 server
@@ -626,17 +616,17 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr3);
 
         waitForComplete(&cl, tr3);
-        VERIFY(tr->complete);
-        VERIFY(tr2->complete);
+        SG_VERIFY(tr->complete);
+        SG_VERIFY(tr2->complete);
 
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseLength(), strlen(BODY3));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->bodyData, string(BODY3));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr2->responseLength(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
 // POST
@@ -648,7 +638,7 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 204);
+        SG_CHECK_EQUAL(tr->responseCode(), 204);
     }
 
     // PUT
@@ -660,7 +650,7 @@ cout << "testing proxy close" << endl;
             HTTP::Request_ptr own(tr);
             cl.makeRequest(tr);
             waitForComplete(&cl, tr);
-            COMPARE(tr->responseCode(), 204);
+            SG_CHECK_EQUAL(tr->responseCode(), 204);
         }
 
         {
@@ -671,7 +661,7 @@ cout << "testing proxy close" << endl;
             HTTP::Request_ptr own(tr);
             cl.makeRequest(tr);
             waitForComplete(&cl, tr);
-            COMPARE(tr->responseCode(), 201);
+            SG_CHECK_EQUAL(tr->responseCode(), 201);
         }
 
     // test_zero_length_content
@@ -681,9 +671,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->bodyData, string());
-        COMPARE(tr->responseBytesReceived(), 0);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->bodyData, string());
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), 0);
     }
 
     // test cancel
@@ -711,12 +701,12 @@ cout << "testing proxy close" << endl;
 
         waitForComplete(&cl, tr3);
 
-        COMPARE(tr->responseCode(), -1);
-        COMPARE(tr2->responseReason(), "my reason 2");
+        SG_CHECK_EQUAL(tr->responseCode(), -1);
+        SG_CHECK_EQUAL(tr2->responseReason(), "my reason 2");
 
-        COMPARE(tr3->responseLength(), strlen(BODY1));
-        COMPARE(tr3->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
     // test cancel
@@ -742,16 +732,16 @@ cout << "testing proxy close" << endl;
 
         waitForComplete(&cl, tr3);
 
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseCode(), -1);
+        SG_CHECK_EQUAL(tr2->responseCode(), -1);
 
-        COMPARE(tr3->responseLength(), strlen(BODY1));
-        COMPARE(tr3->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
     {
@@ -776,12 +766,12 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr2);
 
         waitForComplete(&cl, tr2);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->bodyData, string(BODY3));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->responseCode(), 200);
-        COMPARE(tr2->bodyData, string(BODY1));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseCode(), 200);
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY1));
     }
 
     cout << "all tests passed ok" << endl;

simgear/io/test_binobj.cxx

@@ -14,6 +14,7 @@
 #endif
 
 #include <simgear/misc/sg_dir.hxx>
+#include <simgear/misc/test_macros.hxx>
 
 #include "sg_binobj.hxx"
 
@@ -22,19 +23,7 @@ using std::cerr;
 using std::endl;
 using std::string;
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:" << a << endl; \
-        exit(1); \
-    }
 
-#define VERIFY(a) \
-    if (!(a))  { \
-        cerr << "failed:" << #a << endl; \
-        exit(1); \
-    }
-    
 void generate_points(int count, std::vector<SGVec3d>& vec)
 {
     for (int i=0; i<count; ++i) {
@@ -61,15 +50,15 @@ void test_empty()
     SGBinObject empty;
     SGPath path(simgear::Dir::current().file("empty.btg.gz"));
     bool ok = empty.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY(ok);
     SGBinObject rd;
-   ok = rd.read_bin(path) ;
-   VERIFY( ok);
+    ok = rd.read_bin(path) ;
+    SG_VERIFY(ok);
+
+    SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), 0);
+    SG_VERIFY(rd.get_pt_materials().empty());
+}
 
-   COMPARE(rd.get_wgs84_nodes().size(), 0);
-   VERIFY(rd.get_pt_materials().empty());
-}   
- 
 void comparePoints(const SGBinObject& rd, const std::vector<SGVec3d>& b)
 {
     for (unsigned int i=1; i<b.size(); i += 10) {
@@ -82,7 +71,7 @@ void comparePoints(const SGBinObject& rd, const std::vector<SGVec3d>& b)
             cout << pos << endl;
         }
         
-        VERIFY(equivalent(pos, b[i], 0.1));        
+        SG_VERIFY(equivalent(pos, b[i], 0.1));        
     }
 }
 
@@ -90,7 +79,7 @@ void compareTexCoords(const SGBinObject& rd, const std::vector<SGVec2f>& b)
 {
     for (unsigned int i=1; i<b.size(); i += 10) {
         SGVec2f pos = rd.get_texcoords()[i];
-        VERIFY(equivalent(pos, b[i], 0.001f));        
+        SG_VERIFY(equivalent(pos, b[i], 0.001f));        
     }
 }
 
@@ -137,13 +126,13 @@ void compareTris(const SGBinObject& a, const SGBinObject& b)
     for (unsigned int i=0; i<count; i += 39) {
         const int_list& vA(a.get_tris_v()[i]);
         const int_list& vB(b.get_tris_v()[i]);
-        VERIFY(vA == vB);
+        SG_VERIFY(vA == vB);
+
+        SG_CHECK_EQUAL(a.get_tri_materials()[i], b.get_tri_materials()[i]);
 
-        COMPARE(a.get_tri_materials()[i], b.get_tri_materials()[i]);
-        
         const int_list& tA(a.get_tris_tcs()[i][0]);
         const int_list& tB(b.get_tris_tcs()[i][0]);
-        VERIFY(tA == tB);
+        SG_VERIFY(tA == tB);
     }
 }
 
@@ -189,16 +178,17 @@ void test_basic()
     basic.set_texcoords(texCoords);
     
     bool ok = basic.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY( ok );
     
     SGBinObject rd;
    ok = rd.read_bin(path) ;
-   VERIFY( ok);
-   COMPARE(rd.get_version(), 7); // should be version 7 since indices are < 2^16
-   COMPARE(rd.get_gbs_center(), center);
-   COMPARE(rd.get_gbs_radius(), 12345);
-   COMPARE(rd.get_wgs84_nodes().size(), points.size());
-   
+   SG_VERIFY( ok);
+   // Should be version 7 since indices are < 2^16
+   SG_CHECK_EQUAL(rd.get_version(), 7);
+   SG_CHECK_EQUAL(rd.get_gbs_center(), center);
+   SG_CHECK_EQUAL(rd.get_gbs_radius(), 12345);
+   SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), points.size());
+
    comparePoints(rd, points);
    compareTexCoords(rd, texCoords);
 }
@@ -226,15 +216,16 @@ void test_many_tcs()
     generate_tris(basic, 20000);
     
     bool ok = basic.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY( ok );
     
     SGBinObject rd;
    ok = rd.read_bin(path) ;
-   VERIFY( ok);
-   COMPARE(rd.get_version(), 10); // should be version 10 since indices are > 2^16
-   COMPARE(rd.get_wgs84_nodes().size(), points.size());
-   COMPARE(rd.get_texcoords().size(), texCoords.size());
-   
+   SG_VERIFY( ok);
+   // Should be version 10 since indices are > 2^16
+   SG_CHECK_EQUAL(rd.get_version(), 10);
+   SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), points.size());
+   SG_CHECK_EQUAL(rd.get_texcoords().size(), texCoords.size());
+
    comparePoints(rd, points);
    compareTexCoords(rd, texCoords);
    compareTris(basic, rd);
@@ -263,15 +254,16 @@ void test_big()
     generate_tris(basic, 200000);
     
     bool ok = basic.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY( ok );
     
     SGBinObject rd;
    ok = rd.read_bin(path) ;
-   VERIFY( ok);
-   COMPARE(rd.get_version(), 10); // should be version 10 since indices are > 2^16
-   COMPARE(rd.get_wgs84_nodes().size(), points.size());
-   COMPARE(rd.get_texcoords().size(), texCoords.size());
-   
+   SG_VERIFY( ok);
+   // Should be version 10 since indices are > 2^16
+   SG_CHECK_EQUAL(rd.get_version(), 10);
+   SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), points.size());
+   SG_CHECK_EQUAL(rd.get_texcoords().size(), texCoords.size());
+
    comparePoints(rd, points);
    compareTexCoords(rd, texCoords);
    compareTris(basic, rd);
@@ -300,15 +292,15 @@ void test_some_objects()
     generate_tris(basic, 30000); // a number smaller than 2^15!
     
     bool ok = basic.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY( ok );
     
     SGBinObject rd;
     ok = rd.read_bin(path) ;
-    VERIFY( ok);
-    COMPARE(rd.get_version(), 7); // since we have less than 2^15 tris
-    COMPARE(rd.get_wgs84_nodes().size(), points.size());
-    COMPARE(rd.get_texcoords().size(), texCoords.size());
-   
+    SG_VERIFY( ok);
+    SG_CHECK_EQUAL(rd.get_version(), 7); // since we have less than 2^15 tris
+    SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), points.size());
+    SG_CHECK_EQUAL(rd.get_texcoords().size(), texCoords.size());
+
     comparePoints(rd, points);
     compareTexCoords(rd, texCoords);
     compareTris(basic, rd);
@@ -337,15 +329,16 @@ void test_many_objects()
     generate_tris(basic, 200000);
     
     bool ok = basic.write_bin_file(path);
-    VERIFY( ok );
+    SG_VERIFY( ok );
     
     SGBinObject rd;
     ok = rd.read_bin(path) ;
-    VERIFY( ok);
-    COMPARE(rd.get_version(), 10); // should be version 10 since indices are > 2^16
-    COMPARE(rd.get_wgs84_nodes().size(), points.size());
-    COMPARE(rd.get_texcoords().size(), texCoords.size());
-   
+    SG_VERIFY( ok);
+    // Should be version 10 since indices are > 2^16
+    SG_CHECK_EQUAL(rd.get_version(), 10);
+    SG_CHECK_EQUAL(rd.get_wgs84_nodes().size(), points.size());
+    SG_CHECK_EQUAL(rd.get_texcoords().size(), texCoords.size());
+
     comparePoints(rd, points);
     compareTexCoords(rd, texCoords);
     compareTris(basic, rd);

simgear/io/test_repository.cxx

@@ -18,7 +18,7 @@
 #include <simgear/timing/timestamp.hxx>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_dir.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/structure/callback.hxx>
 
@@ -71,7 +71,7 @@ public:
     int requestCount;
     bool getWillFail;
     bool returnCorruptData;
-    std::auto_ptr<SGCallback> accessCallback;
+    std::unique_ptr<SGCallback> accessCallback;
 
     void clearRequestCounts();
 
@@ -400,7 +400,7 @@ void waitForUpdateComplete(HTTP::Client* cl, HTTPRepository* repo)
 
 void testBasicClone(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_basic");
     simgear::Dir pd(p);
@@ -408,7 +408,6 @@ void testBasicClone(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
     repo->update();
 
     waitForUpdateComplete(cl, repo.get());
@@ -436,7 +435,7 @@ void testBasicClone(HTTP::Client* cl)
 
 void testModifyLocalFiles(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_modify_local_2");
     simgear::Dir pd(p);
@@ -446,7 +445,6 @@ void testModifyLocalFiles(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
     repo->update();
 
     waitForUpdateComplete(cl, repo.get());
@@ -478,7 +476,7 @@ void testNoChangesUpdate()
 
 void testMergeExistingFileWithoutDownload(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_merge_existing");
     simgear::Dir pd(p);
@@ -488,7 +486,6 @@ void testMergeExistingFileWithoutDownload(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
 
     createFile(p, "dirC/fileCB", 4); // should match
     createFile(p, "dirC/fileCC", 3); // mismatch
@@ -521,7 +518,7 @@ void testMergeExistingFileWithoutDownload(HTTP::Client* cl)
 
 void testLossOfLocalFiles(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_lose_local");
     simgear::Dir pd(p);
@@ -531,7 +528,6 @@ void testLossOfLocalFiles(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
     repo->update();
     waitForUpdateComplete(cl, repo.get());
     verifyFileState(p, "dirB/subdirA/fileBAA");
@@ -556,7 +552,7 @@ void testLossOfLocalFiles(HTTP::Client* cl)
 
 void testAbandonMissingFiles(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_missing_files");
     simgear::Dir pd(p);
@@ -569,7 +565,6 @@ void testAbandonMissingFiles(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
     repo->update();
     waitForUpdateComplete(cl, repo.get());
     if (repo->failure() != HTTPRepository::REPO_PARTIAL_UPDATE) {
@@ -581,7 +576,7 @@ void testAbandonMissingFiles(HTTP::Client* cl)
 
 void testAbandonCorruptFiles(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_corrupt_files");
     simgear::Dir pd(p);
@@ -594,11 +589,10 @@ void testAbandonCorruptFiles(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
-
     repo->update();
     waitForUpdateComplete(cl, repo.get());
     if (repo->failure() != HTTPRepository::REPO_ERROR_CHECKSUM) {
+        std::cerr << "Got failure state:" << repo->failure() << std::endl;
         throw sg_exception("Bad result from corrupt files test");
     }
 
@@ -611,149 +605,6 @@ void testAbandonCorruptFiles(HTTP::Client* cl)
     std::cout << "Passed test: detect corrupted download" << std::endl;
 }
 
-void testPartialUpdateBasic(HTTP::Client* cl)
-{
-    std::auto_ptr<HTTPRepository> repo;
-    SGPath p(simgear::Dir::current().path());
-    p.append("http_repo_partial_update");
-    simgear::Dir pd(p);
-    if (pd.exists()) {
-        pd.removeChildren();
-    }
-
-    global_repo->clearRequestCounts();
-    global_repo->clearFailFlags();
-    global_repo->defineFile("dirA/subdirF/fileAFA");
-    global_repo->defineFile("dirA/subdirF/fileAFB");
-    global_repo->defineFile("dirA/subdirH/fileAHA");
-    global_repo->defineFile("dirA/subdirH/fileAHB");
-
-    global_repo->defineFile("dirG/subdirA/subsubA/fileGAAB");
-
-// request subdir of A
-    repo.reset(new HTTPRepository(p, cl));
-    repo->setBaseUrl("http://localhost:2000/repo");
-    repo->addSubpath("dirA/subdirF");
-    waitForUpdateComplete(cl, repo.get());
-
-    verifyFileState(p, "dirA/subdirF/fileAFA");
-    verifyFileState(p, "dirA/subdirF/fileAFB");
-
-    verifyFileState(p, "fileA"); // files are always synced
-    verifyFileState(p, "dirA/fileAB");
-    verifyFileNotPresent(p, "dirB/subdirB/fileBBB");
-    verifyFileNotPresent(p, "dirD");
-    verifyFileNotPresent(p, "dirA/subdirH/fileAHB");
-
-    verifyRequestCount("dirA", 1);
-    verifyRequestCount("dirA/fileAA", 1);
-    verifyRequestCount("dirA/subdirF", 1);
-    verifyRequestCount("dirA/subdirF/fileAFA", 1);
-    verifyRequestCount("dirA/subdirF/fileAFB", 1);
-    verifyRequestCount("dirB", 0);
-    verifyRequestCount("dirG", 0);
-
-// now request dir B
-    repo->addSubpath("dirB");
-    waitForUpdateComplete(cl, repo.get());
-
-    verifyFileState(p, "dirA/subdirF/fileAFB");
-    verifyFileState(p, "dirB/subdirB/fileBBA");
-    verifyFileState(p, "dirB/subdirB/fileBBB");
-
-    verifyRequestCount("dirB", 1);
-    verifyRequestCount("dirB/subdirA/fileBAC", 1);
-    verifyRequestCount("dirA", 1);
-    verifyRequestCount("dirA/fileAA", 1);
-    verifyRequestCount("dirG", 0);
-
-// widen subdir to parent
-    repo->addSubpath("dirA");
-    waitForUpdateComplete(cl, repo.get());
-
-    verifyFileState(p, "dirA/subdirH/fileAHA");
-    verifyFileState(p, "dirA/subdirH/fileAHB");
-
-    verifyRequestCount("dirA", 1);
-    verifyRequestCount("dirB/subdirA/fileBAC", 1);
-    verifyRequestCount("dirA/subdirF/fileAFA", 1);
-
-// request an already fetched subdir - should be a no-op
-    repo->addSubpath("dirB/subdirB");
-    waitForUpdateComplete(cl, repo.get());
-
-    verifyRequestCount("dirB", 1);
-    verifyRequestCount("dirB/subdirB/fileBBB", 1);
-
-// add new / modify files inside
-    global_repo->defineFile("dirA/subdirF/fileAFC");
-    global_repo->defineFile("dirA/subdirF/fileAFD");
-    repo->update();
-    waitForUpdateComplete(cl, repo.get());
-
-    if (global_repo->requestCount != 2) {
-        throw sg_exception("Bad root request count");
-    }
-
-    verifyFileState(p, "dirA/subdirF/fileAFC");
-    verifyFileState(p, "dirA/subdirF/fileAFD");
-
-    std::cout << "Passed test: basic partial clone and update" << std::endl;
-}
-
-void testPartialUpdateExisting(HTTP::Client* cl)
-{
-    std::auto_ptr<HTTPRepository> repo;
-    SGPath p(simgear::Dir::current().path());
-    p.append("http_repo_partial_update_existing");
-    simgear::Dir pd(p);
-    if (pd.exists()) {
-        pd.removeChildren();
-    }
-
-    global_repo->clearRequestCounts();
-    global_repo->clearFailFlags();
-
-// full update to sync everything
-    repo.reset(new HTTPRepository(p, cl));
-    repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
-    repo->update();
-    waitForUpdateComplete(cl, repo.get());
-
-// new repo for partial
-    global_repo->clearRequestCounts();
-    repo.reset(new HTTPRepository(p, cl));
-    repo->setBaseUrl("http://localhost:2000/repo");
-    repo->addSubpath("dirA/subdirF");
-    waitForUpdateComplete(cl, repo.get());
-
-    if (global_repo->requestCount != 1) {
-        throw sg_exception("Bad root request count");
-    }
-
-    verifyRequestCount("dirA", 0);
-    verifyRequestCount("dirA/fileAA", 0);
-    verifyRequestCount("dirA/subdirF", 0);
-    verifyRequestCount("dirA/subdirF/fileAFA", 0);
-    verifyRequestCount("dirA/subdirF/fileAFB", 0);
-
-// and request more dirs
-    // this is a good simulation of terrasync requesting more subdirs of
-    // an already created and in sync tree. should not generate any more
-    // network trip
-    repo->addSubpath("dirC");
-
-    verifyFileState(p, "dirC/subdirA/subsubA/fileCAAA");
-    verifyRequestCount("dirC/subdirA/subsubA/fileCAAA", 0);
-
-    if (global_repo->requestCount != 1) {
-        throw sg_exception("Bad root request count");
-    }
-
-    std::cout << "Passed test: partial update of existing" << std::endl;
-}
-
 void modifyBTree()
 {
     std::cout << "Modifying sub-tree" << std::endl;
@@ -763,53 +614,9 @@ void modifyBTree()
     global_repo->findEntry("dirB/subdirB/fileBBB")->revision++;
 }
 
-void testPartialUpdateWidenWhileInProgress(HTTP::Client* cl)
-{
-    std::auto_ptr<HTTPRepository> repo;
-    SGPath p(simgear::Dir::current().path());
-    p.append("http_repo_partial_update_widen");
-    simgear::Dir pd(p);
-    if (pd.exists()) {
-        pd.removeChildren();
-    }
-
-    global_repo->clearRequestCounts();
-    global_repo->clearFailFlags();
-
-    // full update to sync everything
-    repo.reset(new HTTPRepository(p, cl));
-    repo->setBaseUrl("http://localhost:2000/repo");
-
-    repo->addSubpath("dirA/subdirF");
-    repo->addSubpath("dirB/subdirB");
-    waitForUpdateComplete(cl, repo.get());
-
-    verifyRequestCount("dirA/subdirF", 1);
-    if (global_repo->requestCount != 1) {
-        throw sg_exception("Bad root request count");
-    }
-
-    repo->addSubpath("dirA");
-    repo->addSubpath("dirB");
-    repo->addSubpath("dirC");
-
-    waitForUpdateComplete(cl, repo.get());
-
-    // should not request the root again
-    verifyRequestCount("dirA/subdirF", 1);
-    if (global_repo->requestCount != 1) {
-        throw sg_exception("Bad root request count");
-    }
-
-    verifyFileState(p, "dirA/subdirF/fileAFA");
-    verifyFileState(p, "dirC/subdirA/subsubA/fileCAAA");
-
-    std::cout << "Passed test: partial update with widen" << std::endl;
-}
-
 void testServerModifyDuringSync(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_server_modify_during_sync");
     simgear::Dir pd(p);
@@ -822,7 +629,6 @@ void testServerModifyDuringSync(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
 
     global_repo->findEntry("dirA/fileAA")->accessCallback.reset(make_callback(&modifyBTree));
 
@@ -832,7 +638,7 @@ void testServerModifyDuringSync(HTTP::Client* cl)
     global_repo->findEntry("dirA/fileAA")->accessCallback.reset();
 
     if (repo->failure() != HTTPRepository::REPO_ERROR_CHECKSUM) {
-        throw sg_exception("Bad result from corrupt files test");
+        throw sg_exception("Bad result from modify during sync test");
     }
 
     std::cout << "Passed test modify server during sync" << std::endl;
@@ -841,7 +647,7 @@ void testServerModifyDuringSync(HTTP::Client* cl)
 
 void testDestroyDuringSync(HTTP::Client* cl)
 {
-    std::auto_ptr<HTTPRepository> repo;
+    std::unique_ptr<HTTPRepository> repo;
     SGPath p(simgear::Dir::current().path());
     p.append("http_repo_destory_during_sync");
     simgear::Dir pd(p);
@@ -854,7 +660,6 @@ void testDestroyDuringSync(HTTP::Client* cl)
 
     repo.reset(new HTTPRepository(p, cl));
     repo->setBaseUrl("http://localhost:2000/repo");
-    repo->setEntireRepositoryMode();
 
     repo->update();
 
@@ -869,10 +674,63 @@ void testDestroyDuringSync(HTTP::Client* cl)
     std::cout << "Passed test destory during sync" << std::endl;
 }
 
+void testCopyInstalledChildren(HTTP::Client* cl)
+{
+    std::unique_ptr<HTTPRepository> repo;
+    SGPath p(simgear::Dir::current().path());
+    p.append("http_repo_copy_installed_children");
+    simgear::Dir pd(p);
+    if (pd.exists()) {
+        pd.removeChildren();
+    }
+
+    // setup installation data
+    SGPath p2(simgear::Dir::current().path());
+    p2.append("http_repo_copy_installed_children_install");
+    simgear::Dir pd2(p2);
+    if (pd2.exists()) {
+        pd2.removeChildren();
+    } else {
+        pd2.create(0700);
+    }
+
+    // fill in 'install' tree data
+    createFile(p, "dirJ/fileJA", 2);
+    createFile(p, "dirJ/fileJB", 3);
+    createFile(p, "dirJ/fileJC", 1);
+
+    global_repo->defineFile("dirJ/fileJA", 2);
+    global_repo->defineFile("dirJ/fileJB", 3);
+    global_repo->defineFile("dirJ/fileJC", 3); // newer
+    global_repo->defineFile("dirJ/fileJD", 3); // not present in install
+
+    global_repo->clearRequestCounts();
+    global_repo->clearFailFlags();
+
+    repo.reset(new HTTPRepository(p, cl));
+    repo->setBaseUrl("http://localhost:2000/repo");
+    repo->setInstalledCopyPath(p2);
+    repo->update();
+
+    // verify correct files were downloaded, only dirs
+
+    waitForUpdateComplete(cl, repo.get());
+    verifyFileState(p, "dirJ/fileJA");
+    verifyFileState(p, "dirJ/fileJB");
+    verifyFileState(p, "dirJ/fileJC");
+    verifyFileState(p, "dirJ/fileJD");
+
+    verifyRequestCount("dirJ/fileJA", 0);
+    verifyRequestCount("dirJ/fileJB", 0);
+    verifyRequestCount("dirJ/fileJC", 1);
+    verifyRequestCount("dirJ/fileJD", 1);
+
+    std::cout << "Copy installed children" << std::endl;
+}
 
 int main(int argc, char* argv[])
 {
-  sglog().setLogLevels( SG_ALL, SG_DEBUG );
+  sglog().setLogLevels( SG_ALL, SG_INFO );
 
   HTTP::Client cl;
   cl.setMaxConnections(1);
@@ -907,13 +765,14 @@ int main(int argc, char* argv[])
     testServer.disconnectAll();
     cl.clearAllConnections();
 
-    testPartialUpdateBasic(&cl);
-    testPartialUpdateExisting(&cl);
-    testPartialUpdateWidenWhileInProgress(&cl);
-
     testServerModifyDuringSync(&cl);
-
     testDestroyDuringSync(&cl);
 
+    testServer.disconnectAll();
+    cl.clearAllConnections();
+
+    testCopyInstalledChildren(&cl);
+
+    std::cout << "all tests passed ok" << std::endl;
     return 0;
 }

simgear/io/test_untar.cxx

@@ -30,7 +30,7 @@ void testTarGz()
     uint8_t* buf = (uint8_t*) alloca(8192);
     size_t bufSize = f.read((char*) buf, 8192);
 
-    VERIFY(TarExtractor::isTarData(buf, bufSize));
+    SG_VERIFY(TarExtractor::isTarData(buf, bufSize));
 
 }
 
@@ -45,7 +45,7 @@ void testPlainTar()
     uint8_t* buf = (uint8_t*) alloca(8192);
     size_t bufSize = f.read((char*) buf, 8192);
 
-    VERIFY(TarExtractor::isTarData(buf, bufSize));
+    SG_VERIFY(TarExtractor::isTarData(buf, bufSize));
 
 }
 

simgear/io/text_DNS.cxx

@@ -17,6 +17,7 @@
 #include <simgear/misc/strutils.hxx>
 #include <simgear/timing/timestamp.hxx>
 #include <simgear/debug/logstream.hxx>
+#include <simgear/misc/test_macros.hxx>
 
 #include <curl/multi.h>
 
@@ -41,18 +42,6 @@ const char* BODY3 = "Cras ut neque nulla. Duis ut velit neque, sit amet "
 const unsigned int body2Size = 8 * 1024;
 char body2[body2Size];
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:'" << a << "'" << endl; \
-        exit(1); \
-    }
-
-#define VERIFY(a) \
-    if (!(a))  { \
-        cerr << "failed:" << #a << endl; \
-        exit(1); \
-    }
 
 class TestRequest : public HTTP::Request
 {
@@ -126,8 +115,9 @@ public:
             d << contentStr;
             push(d.str().c_str());
         } else if (path == "/test_headers") {
-            COMPARE(requestHeaders["X-Foo"], string("Bar"));
-            COMPARE(requestHeaders["X-AnotherHeader"], string("A longer value"));
+            SG_CHECK_EQUAL(requestHeaders["X-Foo"], string("Bar"));
+            SG_CHECK_EQUAL(requestHeaders["X-AnotherHeader"],
+                           string("A longer value"));
 
             string contentStr(BODY1);
             stringstream d;
@@ -304,7 +294,7 @@ public:
         } else if (path == "/test_put") {
           std::cerr << "sending PUT response" << std::endl;
 
-          COMPARE(buffer, BODY3);
+          SG_CHECK_EQUAL(buffer, BODY3);
           stringstream d;
           d << "HTTP/1.1 " << 204 << " " << reasonForCode(204) << "\r\n";
           d << "\r\n"; // final CRLF to terminate the headers
@@ -314,7 +304,7 @@ public:
 
           std::string entityStr = "http://localhost:2000/something.txt";
 
-          COMPARE(buffer, BODY3);
+          SG_CHECK_EQUAL(buffer, BODY3);
           stringstream d;
           d << "HTTP/1.1 " << 201 << " " << reasonForCode(201) << "\r\n";
           d << "Location:" << entityStr << "\r\n";
@@ -385,18 +375,18 @@ int main(int argc, char* argv[])
 
 // test URL parsing
     TestRequest* tr1 = new TestRequest("http://localhost.woo.zar:2000/test1?foo=bar");
-    COMPARE(tr1->scheme(), "http");
-    COMPARE(tr1->hostAndPort(), "localhost.woo.zar:2000");
-    COMPARE(tr1->host(), "localhost.woo.zar");
-    COMPARE(tr1->port(), 2000);
-    COMPARE(tr1->path(), "/test1");
+    SG_CHECK_EQUAL(tr1->scheme(), "http");
+    SG_CHECK_EQUAL(tr1->hostAndPort(), "localhost.woo.zar:2000");
+    SG_CHECK_EQUAL(tr1->host(), "localhost.woo.zar");
+    SG_CHECK_EQUAL(tr1->port(), 2000);
+    SG_CHECK_EQUAL(tr1->path(), "/test1");
 
     TestRequest* tr2 = new TestRequest("http://192.168.1.1/test1/dir/thing/file.png");
-    COMPARE(tr2->scheme(), "http");
-    COMPARE(tr2->hostAndPort(), "192.168.1.1");
-    COMPARE(tr2->host(), "192.168.1.1");
-    COMPARE(tr2->port(), 80);
-    COMPARE(tr2->path(), "/test1/dir/thing/file.png");
+    SG_CHECK_EQUAL(tr2->scheme(), "http");
+    SG_CHECK_EQUAL(tr2->hostAndPort(), "192.168.1.1");
+    SG_CHECK_EQUAL(tr2->host(), "192.168.1.1");
+    SG_CHECK_EQUAL(tr2->port(), 80);
+    SG_CHECK_EQUAL(tr2->path(), "/test1/dir/thing/file.png");
 
 // basic get request
     {
@@ -405,11 +395,11 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
     {
@@ -418,11 +408,11 @@ int main(int argc, char* argv[])
       cl.makeRequest(tr);
 
       waitForComplete(&cl, tr);
-      COMPARE(tr->responseCode(), 200);
-      COMPARE(tr->responseReason(), string("OK"));
-      COMPARE(tr->responseLength(), strlen(BODY3));
-      COMPARE(tr->responseBytesReceived(), strlen(BODY3));
-      COMPARE(tr->bodyData, string(BODY3));
+      SG_CHECK_EQUAL(tr->responseCode(), 200);
+      SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+      SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY3));
+      SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY3));
+      SG_CHECK_EQUAL(tr->bodyData, string(BODY3));
     }
 
     {
@@ -430,7 +420,7 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
     }
 
     {
@@ -441,11 +431,11 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
 // larger get request
@@ -458,9 +448,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseBytesReceived(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
     cerr << "testing chunked transfer encoding" << endl;
@@ -470,12 +460,12 @@ int main(int argc, char* argv[])
         cl.makeRequest(tr);
 
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseReason(), string("OK"));
-        COMPARE(tr->responseBytesReceived(), 30);
-        COMPARE(tr->bodyData, "ABCDEFGHABCDEFABCDSTUVABCDSTUV");
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseReason(), string("OK"));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), 30);
+        SG_CHECK_EQUAL(tr->bodyData, "ABCDEFGHABCDEFABCDSTUVABCDSTUV");
     // check trailers made it too
-        COMPARE(tr->headers["x-foobar"], string("wibble"));
+        SG_CHECK_EQUAL(tr->headers["x-foobar"], string("wibble"));
     }
 
 // test 404
@@ -484,9 +474,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 404);
-        COMPARE(tr->responseReason(), string("not found"));
-        COMPARE(tr->responseLength(), 0);
+        SG_CHECK_EQUAL(tr->responseCode(), 404);
+        SG_CHECK_EQUAL(tr->responseReason(), string("not found"));
+        SG_CHECK_EQUAL(tr->responseLength(), 0);
     }
 
     cout << "done 404 test" << endl;
@@ -496,7 +486,7 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
     }
 
     cout << "done1" << endl;
@@ -506,9 +496,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
 
     cout << "done2" << endl;
@@ -518,9 +508,9 @@ int main(int argc, char* argv[])
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
     }
     cout << "done3" << endl;
 // test connectToHost failure
@@ -532,7 +522,7 @@ int main(int argc, char* argv[])
         waitForFailed(&cl, tr);
 
         const int HOST_NOT_FOUND_CODE = CURLE_COULDNT_RESOLVE_HOST;
-        COMPARE(tr->responseCode(), HOST_NOT_FOUND_CODE);
+        SG_CHECK_EQUAL(tr->responseCode(), HOST_NOT_FOUND_CODE);
     }
 
   cout << "testing abrupt close" << endl;
@@ -544,7 +534,7 @@ int main(int argc, char* argv[])
         waitForFailed(&cl, tr);
 
         const int SERVER_NO_DATA_CODE = CURLE_GOT_NOTHING;
-        COMPARE(tr->responseCode(), SERVER_NO_DATA_CODE);
+        SG_CHECK_EQUAL(tr->responseCode(), SERVER_NO_DATA_CODE);
     }
 
 cout << "testing proxy close" << endl;
@@ -555,9 +545,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
     {
@@ -566,9 +556,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseBytesReceived(), body2Size);
-        COMPARE(tr->bodyData, string(body2, body2Size));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), body2Size);
+        SG_CHECK_EQUAL(tr->bodyData, string(body2, body2Size));
     }
 
 // pipelining
@@ -593,17 +583,17 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr3);
 
         waitForComplete(&cl, tr3);
-        VERIFY(tr->complete);
-        VERIFY(tr2->complete);
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_VERIFY(tr->complete);
+        SG_VERIFY(tr2->complete);
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseLength(), strlen(BODY3));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr2->responseLength(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY3));
 
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
 
-        COMPARE(testServer.connectCount(), 1);
+        SG_CHECK_EQUAL(testServer.connectCount(), 1);
     }
 
 // multiple requests with an HTTP 1.0 server
@@ -624,17 +614,17 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr3);
 
         waitForComplete(&cl, tr3);
-        VERIFY(tr->complete);
-        VERIFY(tr2->complete);
+        SG_VERIFY(tr->complete);
+        SG_VERIFY(tr2->complete);
 
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseLength(), strlen(BODY3));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->bodyData, string(BODY3));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr2->responseLength(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
 // POST
@@ -646,7 +636,7 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 204);
+        SG_CHECK_EQUAL(tr->responseCode(), 204);
     }
 
     // PUT
@@ -658,7 +648,7 @@ cout << "testing proxy close" << endl;
             HTTP::Request_ptr own(tr);
             cl.makeRequest(tr);
             waitForComplete(&cl, tr);
-            COMPARE(tr->responseCode(), 204);
+            SG_CHECK_EQUAL(tr->responseCode(), 204);
         }
 
         {
@@ -669,7 +659,7 @@ cout << "testing proxy close" << endl;
             HTTP::Request_ptr own(tr);
             cl.makeRequest(tr);
             waitForComplete(&cl, tr);
-            COMPARE(tr->responseCode(), 201);
+            SG_CHECK_EQUAL(tr->responseCode(), 201);
         }
 
     // test_zero_length_content
@@ -679,9 +669,9 @@ cout << "testing proxy close" << endl;
         HTTP::Request_ptr own(tr);
         cl.makeRequest(tr);
         waitForComplete(&cl, tr);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->bodyData, string());
-        COMPARE(tr->responseBytesReceived(), 0);
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->bodyData, string());
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), 0);
     }
 
     // test cancel
@@ -709,12 +699,12 @@ cout << "testing proxy close" << endl;
 
         waitForComplete(&cl, tr3);
 
-        COMPARE(tr->responseCode(), -1);
-        COMPARE(tr2->responseReason(), "my reason 2");
+        SG_CHECK_EQUAL(tr->responseCode(), -1);
+        SG_CHECK_EQUAL(tr2->responseReason(), "my reason 2");
 
-        COMPARE(tr3->responseLength(), strlen(BODY1));
-        COMPARE(tr3->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
     // test cancel
@@ -740,16 +730,16 @@ cout << "testing proxy close" << endl;
 
         waitForComplete(&cl, tr3);
 
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->responseLength(), strlen(BODY1));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY1));
 
-        COMPARE(tr2->responseCode(), -1);
+        SG_CHECK_EQUAL(tr2->responseCode(), -1);
 
-        COMPARE(tr3->responseLength(), strlen(BODY1));
-        COMPARE(tr3->responseBytesReceived(), strlen(BODY1));
-        COMPARE(tr3->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr3->responseLength(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr3->bodyData, string(BODY1));
     }
 
     {
@@ -774,12 +764,12 @@ cout << "testing proxy close" << endl;
         cl.makeRequest(tr2);
 
         waitForComplete(&cl, tr2);
-        COMPARE(tr->responseCode(), 200);
-        COMPARE(tr->bodyData, string(BODY3));
-        COMPARE(tr->responseBytesReceived(), strlen(BODY3));
-        COMPARE(tr2->responseCode(), 200);
-        COMPARE(tr2->bodyData, string(BODY1));
-        COMPARE(tr2->responseBytesReceived(), strlen(BODY1));
+        SG_CHECK_EQUAL(tr->responseCode(), 200);
+        SG_CHECK_EQUAL(tr->bodyData, string(BODY3));
+        SG_CHECK_EQUAL(tr->responseBytesReceived(), strlen(BODY3));
+        SG_CHECK_EQUAL(tr2->responseCode(), 200);
+        SG_CHECK_EQUAL(tr2->bodyData, string(BODY1));
+        SG_CHECK_EQUAL(tr2->responseBytesReceived(), strlen(BODY1));
     }
 
     cout << "all tests passed ok" << endl;

simgear/io/untar.cxx

@@ -101,7 +101,7 @@ public:
     };
 
     size_t bytesRemaining;
-    std::auto_ptr<SGFile> currentFile;
+    std::unique_ptr<SGFile> currentFile;
     size_t currentFileSize;
     z_stream zlibStream;
     uint8_t* zlibOutput;

simgear/io/untar.hxx

@@ -44,7 +44,7 @@ public:
     bool hasError() const;
 
 private:
-    std::auto_ptr<TarExtractorPrivate> d;
+    std::unique_ptr<TarExtractorPrivate> d;
 };
 
 } // of namespace simgear

simgear/math/CMakeLists.txt

@@ -33,6 +33,7 @@ set(HEADERS
     sg_types.hxx
     sg_random.h
     simd.hxx
+    simd4x4.hxx
     )
 
 set(SOURCES 
@@ -46,6 +47,10 @@ simgear_component(math math "${SOURCES}" "${HEADERS}")
 
 if(ENABLE_TESTS)
 
+add_executable(sgvec4_test test_sgvec4.cxx)
+target_link_libraries(sgvec4_test ${TEST_LIBS})
+add_test(sgvec4 ${EXECUTABLE_OUTPUT_PATH}/sgvec4_test)
+
 add_executable(math_test SGMathTest.cxx)
 target_link_libraries(math_test ${TEST_LIBS})
 add_test(math ${EXECUTABLE_OUTPUT_PATH}/math_test)

simgear/math/SGMathTest.cxx

@@ -28,6 +28,9 @@
 #include "SGRect.hxx"
 #include "sg_random.h"
 
+int lineno = 0;
+
+
 template<typename T>
 bool
 Vec3Test(void)
@@ -38,45 +41,45 @@ Vec3Test(void)
   v1 = SGVec3<T>(1, 2, 3);
   v2 = SGVec3<T>(3, 2, 1);
   if (equivalent(v1, v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the unary minus operator
   v3 = SGVec3<T>(-1, -2, -3);
   if (!equivalent(-v1, v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the unary plus operator
   v3 = SGVec3<T>(1, 2, 3);
   if (!equivalent(+v1, v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the addition operator
   v3 = SGVec3<T>(4, 4, 4);
   if (!equivalent(v1 + v2, v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the subtraction operator
   v3 = SGVec3<T>(-2, 0, 2);
   if (!equivalent(v1 - v2, v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the scaler multiplication operator
   v3 = SGVec3<T>(2, 4, 6);
   if (!equivalent(2*v1, v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the dot product
   if (fabs(dot(v1, v2) - 10) > 10*SGLimits<T>::epsilon())
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the cross product
   v3 = SGVec3<T>(-4, 8, -4);
   if (!equivalent(cross(v1, v2), v3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check the euclidean length
   if (fabs(14 - length(v1)*length(v1)) > 14*SGLimits<T>::epsilon())
-    return false;
+    { lineno = __LINE__; return false; }
 
   return true;
 }
@@ -89,11 +92,11 @@ isSameRotation(const SGQuat<T>& q1, const SGQuat<T>& q2)
   const SGVec3<T> e2(0, 1, 0);
   const SGVec3<T> e3(0, 0, 1);
   if (!equivalent(q1.transform(e1), q2.transform(e1)))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(q1.transform(e2), q2.transform(e2)))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(q1.transform(e3), q2.transform(e3)))
-    return false;
+    { lineno = __LINE__; return false; }
   return true;
 }
 
@@ -111,37 +114,37 @@ QuatTest(void)
   v1 = SGVec3<T>(1, 2, 3);
   v2 = SGVec3<T>(1, -2, -3);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check a rotation around the x axis
   q1 = SGQuat<T>::fromAngleAxis(0.5*SGMisc<T>::pi(), e1);
   v2 = SGVec3<T>(1, 3, -2);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check a rotation around the y axis
   q1 = SGQuat<T>::fromAngleAxis(SGMisc<T>::pi(), e2);
   v2 = SGVec3<T>(-1, 2, -3);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check a rotation around the y axis
   q1 = SGQuat<T>::fromAngleAxis(0.5*SGMisc<T>::pi(), e2);
   v2 = SGVec3<T>(-3, 2, 1);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check a rotation around the z axis
   q1 = SGQuat<T>::fromAngleAxis(SGMisc<T>::pi(), e3);
   v2 = SGVec3<T>(-1, -2, 3);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check a rotation around the z axis
   q1 = SGQuat<T>::fromAngleAxis(0.5*SGMisc<T>::pi(), e3);
   v2 = SGVec3<T>(2, -1, 3);
   if (!equivalent(q1.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Now check some successive transforms
   // We can reuse the prevously tested stuff
@@ -150,7 +153,7 @@ QuatTest(void)
   q3 = q1*q2;
   v2 = q2.transform(q1.transform(v1));
   if (!equivalent(q3.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   /// Test from Euler angles
   float x = 0.2*SGMisc<T>::pi();
@@ -162,7 +165,7 @@ QuatTest(void)
   v2 = q3.transform(q2.transform(q1.transform(v1)));
   q4 = SGQuat<T>::fromEulerRad(z, y, x);
   if (!equivalent(q4.transform(v1), v2))
-    return false;
+    { lineno = __LINE__; return false; }
 
   /// Test angle axis forward and back transform
   q1 = SGQuat<T>::fromAngleAxis(0.2*SGMisc<T>::pi(), e1);
@@ -172,15 +175,15 @@ QuatTest(void)
   q1.getAngleAxis(angleAxis);
   q4 = SGQuat<T>::fromAngleAxis(angleAxis);
   if (!isSameRotation(q1, q4))
-    return false;
+    { lineno = __LINE__; return false; }
   q2.getAngleAxis(angleAxis);
   q4 = SGQuat<T>::fromAngleAxis(angleAxis);
   if (!isSameRotation(q2, q4))
-    return false;
+    { lineno = __LINE__; return false; }
   q3.getAngleAxis(angleAxis);
   q4 = SGQuat<T>::fromAngleAxis(angleAxis);
   if (!isSameRotation(q3, q4))
-    return false;
+    { lineno = __LINE__; return false; }
 
   /// Test angle axis forward and back transform
   q1 = SGQuat<T>::fromAngleAxis(0.2*SGMisc<T>::pi(), e1);
@@ -189,15 +192,15 @@ QuatTest(void)
   SGVec3<T> positiveAngleAxis = q1.getPositiveRealImag();
   q4 = SGQuat<T>::fromPositiveRealImag(positiveAngleAxis);
   if (!isSameRotation(q1, q4))
-    return false;
+    { lineno = __LINE__; return false; }
   positiveAngleAxis = q2.getPositiveRealImag();
   q4 = SGQuat<T>::fromPositiveRealImag(positiveAngleAxis);
   if (!isSameRotation(q2, q4))
-    return false;
+    { lineno = __LINE__; return false; }
   positiveAngleAxis = q3.getPositiveRealImag();
   q4 = SGQuat<T>::fromPositiveRealImag(positiveAngleAxis);
   if (!isSameRotation(q3, q4))
-    return false;
+    { lineno = __LINE__; return false; }
 
   return true;
 }
@@ -219,13 +222,13 @@ QuatDerivativeTest(void)
     // Check if we can restore the angular velocity
     SGVec3<T> av2 = SGQuat<T>::forwardDifferenceVelocity(o0, o1, dt);
     if (!equivalent(av, av2))
-      return false;
+      { lineno = __LINE__; return false; }
 
     // Test with the equivalent orientation
     o1 = -o1;
     av2 = SGQuat<T>::forwardDifferenceVelocity(o0, o1, dt);
     if (!equivalent(av, av2))
-      return false;
+      { lineno = __LINE__; return false; }
   }
   return true;
 }
@@ -250,23 +253,23 @@ MatrixTest(void)
   invert(m2, m0);
   m3 = transNeg(m0);
   if (!equivalent(m1, m2))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m2, m3))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Check matrix multiplication and inversion
   if (!equivalent(m0*m1, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m1*m0, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m0*m2, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m2*m0, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m0*m3, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
   if (!equivalent(m3*m0, SGMatrix<T>::unit()))
-    return false;
+    { lineno = __LINE__; return false; }
 
   return true;
 }
@@ -276,26 +279,26 @@ void doRectTest()
 {
   SGRect<T> rect(10, 15, 20, 25);
 
-  COMPARE(rect.x(), 10)
-  COMPARE(rect.y(), 15)
-  COMPARE(rect.width(), 20)
-  COMPARE(rect.height(), 25)
+  SG_CHECK_EQUAL(rect.x(), 10)
+  SG_CHECK_EQUAL(rect.y(), 15)
+  SG_CHECK_EQUAL(rect.width(), 20)
+  SG_CHECK_EQUAL(rect.height(), 25)
 
-  COMPARE(rect.pos(), SGVec2<T>(10, 15))
-  COMPARE(rect.size(), SGVec2<T>(20, 25))
+  SG_CHECK_EQUAL(rect.pos(), SGVec2<T>(10, 15))
+  SG_CHECK_EQUAL(rect.size(), SGVec2<T>(20, 25))
 
-  COMPARE(rect.l(), 10)
-  COMPARE(rect.t(), 15)
-  COMPARE(rect.r(), 30)
-  COMPARE(rect.b(), 40)
+  SG_CHECK_EQUAL(rect.l(), 10)
+  SG_CHECK_EQUAL(rect.t(), 15)
+  SG_CHECK_EQUAL(rect.r(), 30)
+  SG_CHECK_EQUAL(rect.b(), 40)
 
-  VERIFY(rect == rect)
-  VERIFY(rect == SGRect<T>(10, 15, 20, 25))
-  VERIFY(rect != SGRect<T>(11, 15, 20, 25))
+  SG_VERIFY(rect == rect)
+  SG_VERIFY(rect == SGRect<T>(10, 15, 20, 25))
+  SG_VERIFY(rect != SGRect<T>(11, 15, 20, 25))
 
-  VERIFY(rect.contains(10, 15))
-  VERIFY(!rect.contains(9, 15))
-  VERIFY(rect.contains(9, 15, 1))
+  SG_VERIFY(rect.contains(10, 15))
+  SG_VERIFY(!rect.contains(9, 15))
+  SG_VERIFY(rect.contains(9, 15, 1))
 }
 
 bool
@@ -320,13 +323,13 @@ GeodesyTest(void)
   if (epsDeg < fabs(geod0.getLongitudeDeg() - geod1.getLongitudeDeg()) ||
       epsDeg < fabs(geod0.getLatitudeDeg() - geod1.getLatitudeDeg()) ||
       epsM < fabs(geod0.getElevationM() - geod1.getElevationM()))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // Test the conversion routines to radial coordinates
   geoc0 = SGGeoc::fromCart(cart0);
   cart1 = SGVec3<double>::fromGeoc(geoc0);
   if (!equivalent(cart0, cart1))
-    return false;
+    { lineno = __LINE__; return false; }
 
   // test course / advance routines
   // uses examples from Williams aviation formulary
@@ -336,12 +339,12 @@ GeodesyTest(void)
   double distNm = SGGeodesy::distanceRad(lax, jfk) * SG_RAD_TO_NM;
   std::cout << "distance is " << distNm << std::endl;
   if (0.5 < fabs(distNm - 2144)) // 2144 nm
-	return false;
+	{ lineno = __LINE__; return false; }
 
   double crsDeg = SGGeodesy::courseRad(lax, jfk) * SG_RADIANS_TO_DEGREES;
   std::cout << "course is " << crsDeg << std::endl;
   if (0.5 < fabs(crsDeg - 66)) // 66 degrees
-	return false;
+	{ lineno = __LINE__; return false; }
 
   SGGeoc adv;
   SGGeodesy::advanceRadM(lax, crsDeg * SG_DEGREES_TO_RADIANS, 100 * SG_NM_TO_METER, adv);
@@ -349,7 +352,7 @@ GeodesyTest(void)
 
   if (0.01 < fabs(adv.getLongitudeRad() - (-2.034206)) ||
 	  0.01 < fabs(adv.getLatitudeRad() - 0.604180))
-	return false;
+	{ lineno = __LINE__; return false; }
 
   return true;
 }
@@ -361,25 +364,25 @@ main(void)
 
   // Do vector tests
   if (!Vec3Test<float>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
   if (!Vec3Test<double>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
 
   // Do quaternion tests
   if (!QuatTest<float>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
   if (!QuatTest<double>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
   if (!QuatDerivativeTest<float>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
   if (!QuatDerivativeTest<double>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
 
   // Do matrix tests
   if (!MatrixTest<float>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
   if (!MatrixTest<double>())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
 
   // Do rect tests
   doRectTest<int>();
@@ -387,7 +390,7 @@ main(void)
 
   // Check geodetic/geocentric/cartesian conversions
   if (!GeodesyTest())
-    return EXIT_FAILURE;
+    { fprintf(stderr, "Error at line: %i called from line: %i\n", lineno, __LINE__); return EXIT_FAILURE; }
 
   std::cout << "Successfully passed all tests!" << std::endl;
   return EXIT_SUCCESS;

simgear/math/SGMatrix.hxx

@@ -18,6 +18,8 @@
 #ifndef SGMatrix_H
 #define SGMatrix_H
 
+#include <simgear/math/simd4x4.hxx>
+
 /// Expression templates for poor programmers ... :)
 template<typename T>
 struct TransNegRef;
@@ -38,13 +40,13 @@ public:
     /// uninitialized values in the debug build very fast ...
 #ifndef NDEBUG
     for (unsigned i = 0; i < nEnts; ++i)
-      _data.flat[i] = SGLimits<T>::quiet_NaN();
+      _data[i] = SGLimits<T>::quiet_NaN();
 #endif
   }
   /// Constructor. Initialize by the content of a plain array,
   /// make sure it has at least 16 elements
   explicit SGMatrix(const T* data)
-  { for (unsigned i = 0; i < nEnts; ++i) _data.flat[i] = data[i]; }
+  { _data = simd4x4_t<T,4>(data); }
 
   /// Constructor, build up a SGMatrix from given elements
   SGMatrix(T m00, T m01, T m02, T m03,
@@ -52,14 +54,8 @@ public:
            T m20, T m21, T m22, T m23,
            T m30, T m31, T m32, T m33)
   {
-    _data.flat[0] = m00; _data.flat[1] = m10;
-    _data.flat[2] = m20; _data.flat[3] = m30;
-    _data.flat[4] = m01; _data.flat[5] = m11;
-    _data.flat[6] = m21; _data.flat[7] = m31;
-    _data.flat[8] = m02; _data.flat[9] = m12;
-    _data.flat[10] = m22; _data.flat[11] = m32;
-    _data.flat[12] = m03; _data.flat[13] = m13;
-    _data.flat[14] = m23; _data.flat[15] = m33;
+    _data = simd4x4_t<T,4>(m00,m01,m02,m03,m10,m11,m12,m13,
+                           m20,m21,m22,m23,m30,m31,m32,m33);
   }
 
   /// Constructor, build up a SGMatrix from a translation
@@ -80,14 +76,8 @@ public:
   template<typename S>
   void set(const SGVec3<S>& trans)
   {
-    _data.flat[0] = 1; _data.flat[4] = 0;
-    _data.flat[8] = 0; _data.flat[12] = T(trans(0));
-    _data.flat[1] = 0; _data.flat[5] = 1;
-    _data.flat[9] = 0; _data.flat[13] = T(trans(1));
-    _data.flat[2] = 0; _data.flat[6] = 0;
-    _data.flat[10] = 1; _data.flat[14] = T(trans(2));
-    _data.flat[3] = 0; _data.flat[7] = 0;
-    _data.flat[11] = 0; _data.flat[15] = 1;
+    simd4x4::unit(_data);
+    simd4x4::translate(_data, trans.simd3());
   }
 
   /// Set from a scale/rotation and tranlation
@@ -98,82 +88,77 @@ public:
     T xx = x*x; T yy = y*y; T zz = z*z;
     T wx = w*x; T wy = w*y; T wz = w*z;
     T xy = x*y; T xz = x*z; T yz = y*z;
-    _data.flat[0] = 1-2*(yy+zz); _data.flat[1] = 2*(xy-wz);
-    _data.flat[2] = 2*(xz+wy); _data.flat[3] = 0;
-    _data.flat[4] = 2*(xy+wz); _data.flat[5] = 1-2*(xx+zz);
-    _data.flat[6] = 2*(yz-wx); _data.flat[7] = 0;
-    _data.flat[8] = 2*(xz-wy); _data.flat[9] = 2*(yz+wx);
-    _data.flat[10] = 1-2*(xx+yy); _data.flat[11] = 0;
-    _data.flat[12] = 0; _data.flat[13] = 0;
-    _data.flat[14] = 0; _data.flat[15] = 1;
+    _data[0] = 1-2*(yy+zz); _data[1] = 2*(xy-wz);
+    _data[2] = 2*(xz+wy); _data[3] = 0;
+    _data[4] = 2*(xy+wz); _data[5] = 1-2*(xx+zz);
+    _data[6] = 2*(yz-wx); _data[7] = 0;
+    _data[8] = 2*(xz-wy); _data[9] = 2*(yz+wx);
+    _data[10] = 1-2*(xx+yy); _data[11] = 0;
+    _data[12] = 0; _data[13] = 0;
+    _data[14] = 0; _data[15] = 1;
   }
 
   /// set from a transposed negated matrix
   void set(const TransNegRef<T>& tm)
   {
     const SGMatrix& m = tm.m;
-    _data.flat[0] = m(0,0);
-    _data.flat[1] = m(0,1);
-    _data.flat[2] = m(0,2);
-    _data.flat[3] = m(3,0);
-
-    _data.flat[4] = m(1,0);
-    _data.flat[5] = m(1,1);
-    _data.flat[6] = m(1,2);
-    _data.flat[7] = m(3,1);
-
-    _data.flat[8] = m(2,0);
-    _data.flat[9] = m(2,1);
-    _data.flat[10] = m(2,2);
-    _data.flat[11] = m(3,2);
+    _data = simd4x4::transpose(m.simd4x4());
+    _data[3] = m(3,0);
+    _data[7] = m(3,1);
+    _data[11] = m(3,2);
 
     // Well, this one is ugly here, as that xform method on the current
     // object needs the above data to be already set ...
     SGVec3<T> t = xformVec(SGVec3<T>(m(0,3), m(1,3), m(2,3)));
-    _data.flat[12] = -t(0);
-    _data.flat[13] = -t(1);
-    _data.flat[14] = -t(2);
-    _data.flat[15] = m(3,3);
+    _data.set(3, -t.simd3());
+    _data[15] = m(3,3);
   }
 
   /// Access by index, the index is unchecked
   const T& operator()(unsigned i, unsigned j) const
-  { return _data.flat[i + 4*j]; }
+  { return _data[i + 4*j]; }
   /// Access by index, the index is unchecked
   T& operator()(unsigned i, unsigned j)
-  { return _data.flat[i + 4*j]; }
+  { return _data[i + 4*j]; }
 
   /// Access raw data by index, the index is unchecked
   const T& operator[](unsigned i) const
-  { return _data.flat[i]; }
+  { return _data[i]; }
   /// Access by index, the index is unchecked
   T& operator[](unsigned i)
-  { return _data.flat[i]; }
+  { return _data[i]; }
 
   /// Get the data pointer
   const T* data(void) const
-  { return _data.flat; }
+  { return _data; }
   /// Get the data pointer
   T* data(void)
-  { return _data.flat; }
+  { return _data; }
 
   /// Readonly interface function to ssg's sgMat4/sgdMat4
   const T (&sg(void) const)[4][4]
-  { return _data.carray; }
+  { return _data.ptr(); }
   /// Interface function to ssg's sgMat4/sgdMat4
   T (&sg(void))[4][4]
-  { return _data.carray; }
+  { return _data.ptr(); }
+  /// Readonly raw storage interface
+  const simd4x4_t<T,4> (&simd4x4(void) const)
+  { return _data; }
+  /// Readonly raw storage interface
+  simd4x4_t<T,4> (&simd4x4(void))
+  { return _data; }
+
 
   /// Inplace addition
   SGMatrix& operator+=(const SGMatrix& m)
-  { for (unsigned i = 0; i < nEnts; ++i) _data.flat[i] += m._data.flat[i]; return *this; }
+  { _data += m.simd4x4(); return *this; }
   /// Inplace subtraction
   SGMatrix& operator-=(const SGMatrix& m)
-  { for (unsigned i = 0; i < nEnts; ++i) _data.flat[i] -= m._data.flat[i]; return *this; }
+  { _data -= m.simd4x4(); return *this; }
   /// Inplace scalar multiplication
   template<typename S>
   SGMatrix& operator*=(S s)
-  { for (unsigned i = 0; i < nEnts; ++i) _data.flat[i] *= s; return *this; }
+  { _data *= s; return *this; }
   /// Inplace scalar multiplication by 1/s
   template<typename S>
   SGMatrix& operator/=(S s)
@@ -184,27 +169,13 @@ public:
   template<typename S>
   SGMatrix& preMultTranslate(const SGVec3<S>& t)
   {
-    for (unsigned i = 0; i < 3; ++i) {
-      T tmp = T(t(i));
-      if (tmp == 0)
-        continue;
-      (*this)(i,0) += tmp*(*this)(3,0);
-      (*this)(i,1) += tmp*(*this)(3,1);
-      (*this)(i,2) += tmp*(*this)(3,2);
-      (*this)(i,3) += tmp*(*this)(3,3);
-    }
+    simd4x4::pre_translate(_data,t.simd3());
     return *this;
   }
   template<typename S>
   SGMatrix& postMultTranslate(const SGVec3<S>& t)
   {
-    SGVec4<T> col3((*this)(0,3), (*this)(1,3), (*this)(2,3), (*this)(3,3));
-    for (unsigned i = 0; i < SGMatrix<T>::nCols-1; ++i) {
-      SGVec4<T> tmp((*this)(0,i), (*this)(1,i), (*this)(2,i), (*this)(3,i));
-      col3 += T(t(i))*tmp;
-    }
-    (*this)(0,3) = col3(0); (*this)(1,3) = col3(1);
-    (*this)(2,3) = col3(2); (*this)(3,3) = col3(3);
+    simd4x4::post_translate(_data,t.simd3());
     return *this;
   }
 
@@ -230,51 +201,27 @@ public:
   SGVec3<T> xformPt(const SGVec3<T>& pt) const
   {
     SGVec3<T> tpt;
-    tpt(0) = (*this)(0,3);
-    tpt(1) = (*this)(1,3);
-    tpt(2) = (*this)(2,3);
-    for (unsigned i = 0; i < SGMatrix<T>::nCols-1; ++i) {
-      T tmp = pt(i);
-      tpt(0) += tmp*(*this)(0,i);
-      tpt(1) += tmp*(*this)(1,i);
-      tpt(2) += tmp*(*this)(2,i);
-    }
+    tpt.simd3() = simd4x4::transform(_data,pt.simd3());
     return tpt;
   }
   SGVec3<T> xformVec(const SGVec3<T>& v) const
   {
     SGVec3<T> tv;
-    T tmp = v(0);
-    tv(0) = tmp*(*this)(0,0);
-    tv(1) = tmp*(*this)(1,0);
-    tv(2) = tmp*(*this)(2,0);
-    for (unsigned i = 1; i < SGMatrix<T>::nCols-1; ++i) {
-      T tmp = v(i);
-      tv(0) += tmp*(*this)(0,i);
-      tv(1) += tmp*(*this)(1,i);
-      tv(2) += tmp*(*this)(2,i);
-    }
+    tv.simd3() = _data * v.simd3();
     return tv;
   }
 
   /// Return an all zero matrix
   static SGMatrix zeros(void)
-  { return SGMatrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); }
+  { SGMatrix r; simd4x4::zeros(r.simd4x4()); return r; }
 
   /// Return a unit matrix
   static SGMatrix unit(void)
-  { return SGMatrix(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
+  { SGMatrix r; simd4x4::unit(r.simd4x4()); return r; }
 
 private:
-  /// Required to make that alias safe.
-  union Data {
-    T flat[16];
-    T carray[4][4];
-  };
 
-  /// The actual data, the matrix is stored in column major order,
-  /// that matches the storage format of OpenGL
-  Data _data;
+  simd4x4_t<T,4> _data;
 };
 
 /// Class to distinguish between a matrix and the matrix with a transposed
@@ -296,61 +243,45 @@ operator+(const SGMatrix<T>& m)
 template<typename T>
 inline
 SGMatrix<T>
-operator-(const SGMatrix<T>& m)
+operator-(SGMatrix<T> m)
 {
-  SGMatrix<T> ret;
-  for (unsigned i = 0; i < SGMatrix<T>::nEnts; ++i)
-    ret[i] = -m[i];
-  return ret;
+  m.simd4x4() = -m.simd4x4();
+  return m;
 }
 
 /// Binary +
 template<typename T>
 inline
 SGMatrix<T>
-operator+(const SGMatrix<T>& m1, const SGMatrix<T>& m2)
+operator+(SGMatrix<T> m1, const SGMatrix<T>& m2)
 {
-  SGMatrix<T> ret;
-  for (unsigned i = 0; i < SGMatrix<T>::nEnts; ++i)
-    ret[i] = m1[i] + m2[i];
-  return ret;
+  m1.simd4x4() += m2.simd4x4();
+  return m1;
 }
 
 /// Binary -
 template<typename T>
 inline
 SGMatrix<T>
-operator-(const SGMatrix<T>& m1, const SGMatrix<T>& m2)
+operator-(SGMatrix<T> m1, const SGMatrix<T>& m2)
 {
-  SGMatrix<T> ret;
-  for (unsigned i = 0; i < SGMatrix<T>::nEnts; ++i)
-    ret[i] = m1[i] - m2[i];
-  return ret;
+  m1.simd4x4() -= m2.simd4x4();
+  return m1;
 }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGMatrix<T>
-operator*(S s, const SGMatrix<T>& m)
-{
-  SGMatrix<T> ret;
-  for (unsigned i = 0; i < SGMatrix<T>::nEnts; ++i)
-    ret[i] = s*m[i];
-  return ret;
-}
+operator*(S s, SGMatrix<T> m)
+{ m.simd4x4() *= s; return m; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGMatrix<T>
-operator*(const SGMatrix<T>& m, S s)
-{
-  SGMatrix<T> ret;
-  for (unsigned i = 0; i < SGMatrix<T>::nEnts; ++i)
-    ret[i] = s*m[i];
-  return ret;
-}
+operator*(SGMatrix<T> m, S s)
+{ m.simd4x4() *= s; return m; }
 
 /// Vector multiplication
 template<typename T>
@@ -359,18 +290,7 @@ SGVec4<T>
 operator*(const SGMatrix<T>& m, const SGVec4<T>& v)
 {
   SGVec4<T> mv;
-  T tmp = v(0);
-  mv(0) = tmp*m(0,0);
-  mv(1) = tmp*m(1,0);
-  mv(2) = tmp*m(2,0);
-  mv(3) = tmp*m(3,0);
-  for (unsigned i = 1; i < SGMatrix<T>::nCols; ++i) {
-    T tmp = v(i);
-    mv(0) += tmp*m(0,i);
-    mv(1) += tmp*m(1,i);
-    mv(2) += tmp*m(2,i);
-    mv(3) += tmp*m(3,i);
-  }
+  mv.simd4() = m.simd4x4() * v.simd4();
   return mv;
 }
 
@@ -405,20 +325,7 @@ SGMatrix<T>
 operator*(const SGMatrix<T>& m1, const SGMatrix<T>& m2)
 {
   SGMatrix<T> m;
-  for (unsigned j = 0; j < SGMatrix<T>::nCols; ++j) {
-    T tmp = m2(0,j);
-    m(0,j) = tmp*m1(0,0);
-    m(1,j) = tmp*m1(1,0);
-    m(2,j) = tmp*m1(2,0);
-    m(3,j) = tmp*m1(3,0);
-    for (unsigned i = 1; i < SGMatrix<T>::nCols; ++i) {
-      T tmp = m2(i,j);
-      m(0,j) += tmp*m1(0,i);
-      m(1,j) += tmp*m1(1,i);
-      m(2,j) += tmp*m1(2,i);
-      m(3,j) += tmp*m1(3,i);
-    }
-  }
+  m.simd4x4() = m1.simd4x4() * m2.simd4x4();
   return m;
 }
 

simgear/math/SGVec2.hxx

@@ -23,6 +23,7 @@
 #include <simgear/math/SGLimits.hxx>
 #include <simgear/math/SGMisc.hxx>
 #include <simgear/math/SGMathFwd.hxx>
+#include <simgear/math/simd.hxx>
 
 /// 2D Vector Class
 template<typename T>
@@ -44,11 +45,11 @@ public:
   }
   /// Constructor. Initialize by the given values
   SGVec2(T x, T y)
-  { data()[0] = x; data()[1] = y; }
+  { _data = simd4_t<T,2>(x, y); }
   /// Constructor. Initialize by the content of a plain array,
   /// make sure it has at least 2 elements
   explicit SGVec2(const T* d)
-  { data()[0] = d[0]; data()[1] = d[1]; }
+  { _data = d ? simd4_t<T,2>(d) : simd4_t<T,2>(T(0)); }
   template<typename S>
   explicit SGVec2(const SGVec2<S>& d)
   { data()[0] = d[0]; data()[1] = d[1]; }
@@ -82,25 +83,30 @@ public:
 
   /// Access raw data
   const T (&data(void) const)[2]
-  { return _data; }
+  { return _data.ptr(); }
   /// Access raw data
   T (&data(void))[2]
+  { return _data.ptr(); }
+  const simd4_t<T,2> (&simd2(void) const)
+  { return _data; }
+  /// Readonly raw storage interface
+  simd4_t<T,2> (&simd2(void))
   { return _data; }
 
   /// Inplace addition
   SGVec2& operator+=(const SGVec2& v)
-  { data()[0] += v(0); data()[1] += v(1); return *this; }
+  { _data += v.simd2(); return *this; }
   /// Inplace subtraction
   SGVec2& operator-=(const SGVec2& v)
-  { data()[0] -= v(0); data()[1] -= v(1); return *this; }
+  { _data -= v.simd2(); return *this; }
   /// Inplace scalar multiplication
   template<typename S>
   SGVec2& operator*=(S s)
-  { data()[0] *= s; data()[1] *= s; return *this; }
+  { _data *= s; return *this; }
   /// Inplace scalar multiplication by 1/s
   template<typename S>
   SGVec2& operator/=(S s)
-  { return operator*=(1/T(s)); }
+  { _data*=(1/T(s)); return *this; }
 
   /// Return an all zero vector
   static SGVec2 zeros(void)
@@ -112,7 +118,7 @@ public:
   { return SGVec2(0, 1); }
 
 private:
-  T _data[2];
+  simd4_t<T,2> _data;
 };
 
 /// Unary +, do nothing ...
@@ -126,36 +132,36 @@ operator+(const SGVec2<T>& v)
 template<typename T>
 inline
 SGVec2<T>
-operator-(const SGVec2<T>& v)
-{ return SGVec2<T>(-v(0), -v(1)); }
+operator-(SGVec2<T> v)
+{ v *= -1; return v; }
 
 /// Binary +
 template<typename T>
 inline
 SGVec2<T>
-operator+(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ return SGVec2<T>(v1(0)+v2(0), v1(1)+v2(1)); }
+operator+(SGVec2<T> v1, const SGVec2<T>& v2)
+{ v1.simd2() += v2.simd2(); return v1; }
 
 /// Binary -
 template<typename T>
 inline
 SGVec2<T>
-operator-(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ return SGVec2<T>(v1(0)-v2(0), v1(1)-v2(1)); }
+operator-(SGVec2<T> v1, const SGVec2<T>& v2)
+{ v1.simd2() -= v2.simd2(); return v1; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec2<T>
-operator*(S s, const SGVec2<T>& v)
-{ return SGVec2<T>(s*v(0), s*v(1)); }
+operator*(S s, SGVec2<T> v)
+{ v.simd2() *= s; return v; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec2<T>
-operator*(const SGVec2<T>& v, S s)
-{ return SGVec2<T>(s*v(0), s*v(1)); }
+operator*(SGVec2<T> v, S s)
+{ v.simd2() *= s; return v; }
 
 /// multiplication as a multiplicator, that is assume that the first vector
 /// represents a 2x2 diagonal matrix with the diagonal elements in the vector.
@@ -163,42 +169,42 @@ operator*(const SGVec2<T>& v, S s)
 template<typename T>
 inline
 SGVec2<T>
-mult(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ return SGVec2<T>(v1(0)*v2(0), v1(1)*v2(1)); }
+mult(SGVec2<T> v1, const SGVec2<T>& v2)
+{ v1.simd2() *= v2.simd2(); return v1; }
 
 /// component wise min
 template<typename T>
 inline
 SGVec2<T>
-min(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{return SGVec2<T>(SGMisc<T>::min(v1(0), v2(0)), SGMisc<T>::min(v1(1), v2(1)));}
+min(SGVec2<T> v1, const SGVec2<T>& v2)
+{ v1.simd2() = simd4::min(v1.simd2(), v2.simd2()); return v1; }
 template<typename S, typename T>
 inline
 SGVec2<T>
-min(const SGVec2<T>& v, S s)
-{ return SGVec2<T>(SGMisc<T>::min(s, v(0)), SGMisc<T>::min(s, v(1))); }
+min(SGVec2<T> v, S s)
+{ v.simd2() = simd4::min(v.simd2(), simd4_t<T,2>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec2<T>
-min(S s, const SGVec2<T>& v)
-{ return SGVec2<T>(SGMisc<T>::min(s, v(0)), SGMisc<T>::min(s, v(1))); }
+min(S s, SGVec2<T> v)
+{ v.sim2() = simd4::min(v.simd2(), simd4_t<T,2>(s)); return v; }
 
 /// component wise max
 template<typename T>
 inline
 SGVec2<T>
 max(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{return SGVec2<T>(SGMisc<T>::max(v1(0), v2(0)), SGMisc<T>::max(v1(1), v2(1)));}
+{ v1 = simd4::max(v1.simd2(), v2.simd2()); return v1; }
 template<typename S, typename T>
 inline
 SGVec2<T>
 max(const SGVec2<T>& v, S s)
-{ return SGVec2<T>(SGMisc<T>::max(s, v(0)), SGMisc<T>::max(s, v(1))); }
+{ v = simd4::max(v.simd2(), simd4_t<T,2>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec2<T>
 max(S s, const SGVec2<T>& v)
-{ return SGVec2<T>(SGMisc<T>::max(s, v(0)), SGMisc<T>::max(s, v(1))); }
+{ v = simd4::max(v.simd2(), simd4_t<T,2>(s)); return v; }
 
 /// Add two vectors taking care of (integer) overflows. The values are limited
 /// to the respective minimum and maximum values.
@@ -216,36 +222,39 @@ template<typename T>
 inline
 T
 dot(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ return v1(0)*v2(0) + v1(1)*v2(1); }
+{ return simd4::dot(v1.simd2(), v2.simd2()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 norm(const SGVec2<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd2()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 length(const SGVec2<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd2()); }
 
 /// The 1-norm of the vector, this one is the fastest length function we
 /// can implement on modern cpu's
 template<typename T>
 inline
 T
-norm1(const SGVec2<T>& v)
-{ return fabs(v(0)) + fabs(v(1)); }
+norm1(SGVec2<T> v)
+{ v.simd2() = simd4::abs(v.simd2()); return (v(0)+v(1)); }
 
 /// The inf-norm of the vector
 template<typename T>
 inline
 T
-normI(const SGVec2<T>& v)
-{ return SGMisc<T>::max(fabs(v(0)), fabs(v(1))); }
+normI(SGVec2<T> v)
+{
+  v.simd2() = simd4::abs(v.simd2());
+  return SGMisc<T>::max(v(0), v(1));
+}
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
@@ -335,14 +344,14 @@ template<typename T>
 inline
 T
 dist(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ return norm(v1 - v2); }
+{ return simd4::magnitude(v1.simd2() - v2.simd2()); }
 
 /// The squared euclidean distance of the two vectors
 template<typename T>
 inline
 T
-distSqr(const SGVec2<T>& v1, const SGVec2<T>& v2)
-{ SGVec2<T> tmp = v1 - v2; return dot(tmp, tmp); }
+distSqr(SGVec2<T> v1, const SGVec2<T>& v2)
+{ return simd4::magnitude2(v1.simd2() - v2.simd2()); }
 
 // calculate the projection of u along the direction of d.
 template<typename T>
@@ -350,12 +359,22 @@ inline
 SGVec2<T>
 projection(const SGVec2<T>& u, const SGVec2<T>& d)
 {
-  T denom = dot(d, d);
+  T denom = simd4::magnitude2(d.simd2());
   T ud = dot(u, d);
   if (SGLimits<T>::min() < denom) return u;
   else return d * (dot(u, d) / denom);
 }
 
+template<typename T>
+inline
+SGVec2<T>
+interpolate(T tau, const SGVec2<T>& v1, const SGVec2<T>& v2)
+{
+  SGVec2<T> r;
+  r.simd2() = simd4::interpolate(tau, v1.simd2(), v2.simd2());
+  return r;
+}
+
 #ifndef NDEBUG
 template<typename T>
 inline
@@ -376,11 +395,11 @@ operator<<(std::basic_ostream<char_type, traits_type>& s, const SGVec2<T>& v)
 inline
 SGVec2f
 toVec2f(const SGVec2d& v)
-{ return SGVec2f((float)v(0), (float)v(1)); }
+{ SGVec2f f(v); return f; }
 
 inline
 SGVec2d
 toVec2d(const SGVec2f& v)
-{ return SGVec2d(v(0), v(1)); }
+{ SGVec2d d(v); return d; }
 
 #endif

simgear/math/SGVec3.hxx

@@ -22,6 +22,7 @@
 
 #include <simgear/math/SGVec2.hxx>
 #include <simgear/math/SGGeodesy.hxx>
+#include <simgear/math/simd.hxx>
 
 /// 3D Vector Class
 template<typename T>
@@ -54,16 +55,16 @@ public:
 
   /// Constructor. Initialize by the given values
   SGVec3(T x, T y, T z)
-  { data()[0] = x; data()[1] = y; data()[2] = z; }
+  { _data = simd4_t<T,3>(x, y, z); }
   /// Constructor. Initialize by the content of a plain array,
   /// make sure it has at least 3 elements
   explicit SGVec3(const T* d)
-  { data()[0] = d[0]; data()[1] = d[1]; data()[2] = d[2]; }
+  { _data = d ? simd4_t<T,3>(d) : simd4_t<T,3>(T(0)); }
   template<typename S>
   explicit SGVec3(const SGVec3<S>& d)
   { data()[0] = d[0]; data()[1] = d[1]; data()[2] = d[2]; }
   explicit SGVec3(const SGVec2<T>& v2, const T& v3 = 0)
-  { data()[0] = v2[0]; data()[1] = v2[1]; data()[2] = v3; }
+  { _data = v2.simd2(); data()[2] = v3; }
 
   /// Access by index, the index is unchecked
   const T& operator()(unsigned i) const
@@ -100,25 +101,31 @@ public:
 
   /// Readonly raw storage interface
   const T (&data(void) const)[3]
-  { return _data; }
+  { return _data.ptr(); }
   /// Readonly raw storage interface
   T (&data(void))[3]
+  { return _data.ptr(); }
+  /// Readonly raw storage interface
+  const simd4_t<T,3> (&simd3(void) const)
+  { return _data; }
+  /// Readonly raw storage interface
+  simd4_t<T,3> (&simd3(void))
   { return _data; }
 
   /// Inplace addition
   SGVec3& operator+=(const SGVec3& v)
-  { data()[0] += v(0); data()[1] += v(1); data()[2] += v(2); return *this; }
+  { _data += v.simd3(); return *this; }
   /// Inplace subtraction
   SGVec3& operator-=(const SGVec3& v)
-  { data()[0] -= v(0); data()[1] -= v(1); data()[2] -= v(2); return *this; }
+  { _data -= v.simd3(); return *this; }
   /// Inplace scalar multiplication
   template<typename S>
   SGVec3& operator*=(S s)
-  { data()[0] *= s; data()[1] *= s; data()[2] *= s; return *this; }
+  { _data *= s; return *this; }
   /// Inplace scalar multiplication by 1/s
   template<typename S>
   SGVec3& operator/=(S s)
-  { return operator*=(1/T(s)); }
+  { _data*=(1/T(s)); return *this; }
 
   /// Return an all zero vector
   static SGVec3 zeros(void)
@@ -139,7 +146,8 @@ public:
   static SGVec3 fromGeoc(const SGGeoc& geoc);
 
 private:
-  T _data[3];
+  simd4_t<T,3> _data;
+  
 };
 
 template<>
@@ -193,36 +201,36 @@ operator+(const SGVec3<T>& v)
 template<typename T>
 inline
 SGVec3<T>
-operator-(const SGVec3<T>& v)
-{ return SGVec3<T>(-v(0), -v(1), -v(2)); }
+operator-(SGVec3<T> v)
+{ v *= -1; return v; }
 
 /// Binary +
 template<typename T>
 inline
 SGVec3<T>
-operator+(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ return SGVec3<T>(v1(0)+v2(0), v1(1)+v2(1), v1(2)+v2(2)); }
+operator+(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() += v2.simd3(); return v1; }
 
 /// Binary -
 template<typename T>
 inline
 SGVec3<T>
-operator-(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ return SGVec3<T>(v1(0)-v2(0), v1(1)-v2(1), v1(2)-v2(2)); }
+operator-(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() -= v2.simd3(); return v1; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec3<T>
-operator*(S s, const SGVec3<T>& v)
-{ return SGVec3<T>(s*v(0), s*v(1), s*v(2)); }
+operator*(S s, SGVec3<T> v)
+{ v.simd3() *= s; return v; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec3<T>
-operator*(const SGVec3<T>& v, S s)
-{ return SGVec3<T>(s*v(0), s*v(1), s*v(2)); }
+operator*(SGVec3<T> v, S s)
+{ v.simd3() *= s; return v; }
 
 /// multiplication as a multiplicator, that is assume that the first vector
 /// represents a 3x3 diagonal matrix with the diagonal elements in the vector.
@@ -230,66 +238,42 @@ operator*(const SGVec3<T>& v, S s)
 template<typename T>
 inline
 SGVec3<T>
-mult(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ return SGVec3<T>(v1(0)*v2(0), v1(1)*v2(1), v1(2)*v2(2)); }
+mult(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() *= v2.simd3(); return v1; }
 
 /// component wise min
 template<typename T>
 inline
 SGVec3<T>
-min(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{
-  return SGVec3<T>(SGMisc<T>::min(v1(0), v2(0)),
-                   SGMisc<T>::min(v1(1), v2(1)),
-                   SGMisc<T>::min(v1(2), v2(2)));
-}
+min(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() = simd4::min(v1.simd3(), v2.simd3()); return v1; }
 template<typename S, typename T>
 inline
 SGVec3<T>
-min(const SGVec3<T>& v, S s)
-{
-  return SGVec3<T>(SGMisc<T>::min(s, v(0)),
-                   SGMisc<T>::min(s, v(1)),
-                   SGMisc<T>::min(s, v(2)));
-}
+min(SGVec3<T> v, S s)
+{ v.simd3() = simd4::min(v.simd3(), simd4_t<T,3>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec3<T>
-min(S s, const SGVec3<T>& v)
-{
-  return SGVec3<T>(SGMisc<T>::min(s, v(0)),
-                   SGMisc<T>::min(s, v(1)),
-                   SGMisc<T>::min(s, v(2)));
-}
+min(S s, SGVec3<T> v)
+{ v.simd3() = simd4::min(v.simd3(), simd4_t<T,3>(s)); return v; }
 
 /// component wise max
 template<typename T>
 inline
 SGVec3<T>
-max(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{
-  return SGVec3<T>(SGMisc<T>::max(v1(0), v2(0)),
-                   SGMisc<T>::max(v1(1), v2(1)),
-                   SGMisc<T>::max(v1(2), v2(2)));
-}
+max(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() = simd4::max(v1.simd3(), v2.simd3()); return v1; }
 template<typename S, typename T>
 inline
 SGVec3<T>
-max(const SGVec3<T>& v, S s)
-{
-  return SGVec3<T>(SGMisc<T>::max(s, v(0)),
-                   SGMisc<T>::max(s, v(1)),
-                   SGMisc<T>::max(s, v(2)));
-}
+max(SGVec3<T> v, S s)
+{ v.simd3() = simd4::max(v.simd3(), simd4_t<T,3>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec3<T>
-max(S s, const SGVec3<T>& v)
-{
-  return SGVec3<T>(SGMisc<T>::max(s, v(0)),
-                   SGMisc<T>::max(s, v(1)),
-                   SGMisc<T>::max(s, v(2)));
-}
+max(S s, SGVec3<T> v)
+{ v.simd3() = simd4::max(v.simd3(), simd4_t<T,3>(s)); return v; }
 
 /// Add two vectors taking care of (integer) overflows. The values are limited
 /// to the respective minimum and maximum values.
@@ -308,47 +292,46 @@ template<typename T>
 inline
 T
 dot(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ return v1(0)*v2(0) + v1(1)*v2(1) + v1(2)*v2(2); }
+{ return simd4::dot(v1.simd3(), v2.simd3()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 norm(const SGVec3<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd3()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 length(const SGVec3<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd3()); }
 
 /// The 1-norm of the vector, this one is the fastest length function we
 /// can implement on modern cpu's
 template<typename T>
 inline
 T
-norm1(const SGVec3<T>& v)
-{ return fabs(v(0)) + fabs(v(1)) + fabs(v(2)); }
+norm1(SGVec3<T> v)
+{ v.simd3() = simd4::abs(v.simd3()); return (v(0)+v(1)+v(2)); }
 
 /// The inf-norm of the vector
 template<typename T>
 inline
 T
-normI(const SGVec3<T>& v)
-{ return SGMisc<T>::max(fabs(v(0)), fabs(v(1)), fabs(v(2))); }
+normI(SGVec3<T> v)
+{
+  v.simd3() = simd4::abs(v.simd3());
+  return SGMisc<T>::max(v(0), v(1), v(2));
+}
 
 /// Vector cross product
 template<typename T>
 inline
 SGVec3<T>
-cross(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{
-  return SGVec3<T>(v1(1)*v2(2) - v1(2)*v2(1),
-                   v1(2)*v2(0) - v1(0)*v2(2),
-                   v1(0)*v2(1) - v1(1)*v2(0));
-}
+cross(SGVec3<T> v1, const SGVec3<T>& v2)
+{ v1.simd3() = simd4::cross(v1.simd3(), v2.simd3()); return v1; }
 
 /// return any normalized vector perpendicular to v
 template<typename T>
@@ -468,14 +451,14 @@ template<typename T>
 inline
 T
 dist(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ return norm(v1 - v2); }
+{ return simd4::magnitude(v1.simd3() - v2.simd3()); }
 
 /// The squared euclidean distance of the two vectors
 template<typename T>
 inline
 T
-distSqr(const SGVec3<T>& v1, const SGVec3<T>& v2)
-{ SGVec3<T> tmp = v1 - v2; return dot(tmp, tmp); }
+distSqr(SGVec3<T> v1, const SGVec3<T>& v2)
+{ return simd4::magnitude2(v1.simd3() - v2.simd3()); }
 
 // calculate the projection of u along the direction of d.
 template<typename T>
@@ -483,12 +466,22 @@ inline
 SGVec3<T>
 projection(const SGVec3<T>& u, const SGVec3<T>& d)
 {
-  T denom = dot(d, d);
+  T denom = simd4::magnitude2(d.simd3());
   T ud = dot(u, d);
   if (SGLimits<T>::min() < denom) return u;
   else return d * (dot(u, d) / denom);
 }
 
+template<typename T>
+inline
+SGVec3<T>
+interpolate(T tau, const SGVec3<T>& v1, const SGVec3<T>& v2)
+{
+  SGVec3<T> r;
+  r.simd3() = simd4::interpolate(tau, v1.simd3(), v2.simd3());
+  return r;
+}
+
 #ifndef NDEBUG
 template<typename T>
 inline
@@ -510,11 +503,11 @@ operator<<(std::basic_ostream<char_type, traits_type>& s, const SGVec3<T>& v)
 inline
 SGVec3f
 toVec3f(const SGVec3d& v)
-{ return SGVec3f((float)v(0), (float)v(1), (float)v(2)); }
+{ SGVec3f f(v); return f; }
 
 inline
 SGVec3d
 toVec3d(const SGVec3f& v)
-{ return SGVec3d(v(0), v(1), v(2)); }
+{ SGVec3d d(v); return d; }
 
 #endif

simgear/math/SGVec4.hxx

@@ -20,6 +20,8 @@
 
 #include <iosfwd>
 
+#include <simgear/math/simd.hxx>
+
 /// 4D Vector Class
 template<typename T>
 class SGVec4 {
@@ -40,16 +42,16 @@ public:
   }
   /// Constructor. Initialize by the given values
   SGVec4(T x, T y, T z, T w)
-  { data()[0] = x; data()[1] = y; data()[2] = z; data()[3] = w; }
+  { _data = simd4_t<T,4>(x, y, z, w); }
   /// Constructor. Initialize by the content of a plain array,
   /// make sure it has at least 3 elements
   explicit SGVec4(const T* d)
-  { data()[0] = d[0]; data()[1] = d[1]; data()[2] = d[2]; data()[3] = d[3]; }
+  { _data = d ? simd4_t<T,4>(d) : simd4_t<T,4>(T(0)); }
   template<typename S>
   explicit SGVec4(const SGVec4<S>& d)
   { data()[0] = d[0]; data()[1] = d[1]; data()[2] = d[2]; data()[3] = d[3]; }
   explicit SGVec4(const SGVec3<T>& v3, const T& v4 = 0)
-  { data()[0] = v3[0]; data()[1] = v3[1]; data()[2] = v3[2]; data()[3] = v4; }
+  { _data = v3.simd3(); data()[3] = v4; }
 
   /// Access by index, the index is unchecked
   const T& operator()(unsigned i) const
@@ -92,25 +94,31 @@ public:
 
   /// Readonly raw storage interface
   const T (&data(void) const)[4]
-  { return _data; }
+  { return _data.ptr(); }
   /// Readonly raw storage interface
   T (&data(void))[4]
+  { return _data.ptr(); }
+  /// Readonly raw storage interface
+  const simd4_t<T,4> (&simd4(void) const)
+  { return _data; }
+  /// Readonly raw storage interface
+  simd4_t<T,4> (&simd4(void))
   { return _data; }
 
   /// Inplace addition
   SGVec4& operator+=(const SGVec4& v)
-  { data()[0]+=v(0);data()[1]+=v(1);data()[2]+=v(2);data()[3]+=v(3);return *this; }
+  { _data += v.simd4(); return *this; }
   /// Inplace subtraction
   SGVec4& operator-=(const SGVec4& v)
-  { data()[0]-=v(0);data()[1]-=v(1);data()[2]-=v(2);data()[3]-=v(3);return *this; }
+  { _data -= v.simd4(); return *this; }
   /// Inplace scalar multiplication
   template<typename S>
   SGVec4& operator*=(S s)
-  { data()[0] *= s; data()[1] *= s; data()[2] *= s; data()[3] *= s; return *this; }
+  { _data *= s; return *this; }
   /// Inplace scalar multiplication by 1/s
   template<typename S>
   SGVec4& operator/=(S s)
-  { return operator*=(1/T(s)); }
+  { _data*=(1/T(s)); return *this; }
 
   /// Return an all zero vector
   static SGVec4 zeros(void)
@@ -126,7 +134,7 @@ public:
   { return SGVec4(0, 0, 0, 1); }
 
 private:
-  T _data[4];
+  simd4_t<T,4> _data;
 };
 
 /// Unary +, do nothing ...
@@ -140,36 +148,36 @@ operator+(const SGVec4<T>& v)
 template<typename T>
 inline
 SGVec4<T>
-operator-(const SGVec4<T>& v)
-{ return SGVec4<T>(-v(0), -v(1), -v(2), -v(3)); }
+operator-(SGVec4<T> v)
+{ v *= -1; return v; }
 
 /// Binary +
 template<typename T>
 inline
 SGVec4<T>
-operator+(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ return SGVec4<T>(v1(0)+v2(0), v1(1)+v2(1), v1(2)+v2(2), v1(3)+v2(3)); }
+operator+(SGVec4<T> v1, const SGVec4<T>& v2)
+{ v1.simd4() += v2.simd4(); return v1; }
 
 /// Binary -
 template<typename T>
 inline
 SGVec4<T>
-operator-(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ return SGVec4<T>(v1(0)-v2(0), v1(1)-v2(1), v1(2)-v2(2), v1(3)-v2(3)); }
+operator-(SGVec4<T> v1, const SGVec4<T>& v2)
+{ v1.simd4() -= v2.simd4(); return v1; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec4<T>
-operator*(S s, const SGVec4<T>& v)
-{ return SGVec4<T>(s*v(0), s*v(1), s*v(2), s*v(3)); }
+operator*(S s, SGVec4<T> v)
+{ v.simd4() *= s; return v; }
 
 /// Scalar multiplication
 template<typename S, typename T>
 inline
 SGVec4<T>
-operator*(const SGVec4<T>& v, S s)
-{ return SGVec4<T>(s*v(0), s*v(1), s*v(2), s*v(3)); }
+operator*(SGVec4<T> v, S s)
+{ v.simd4() *= s; return v; }
 
 /// multiplication as a multiplicator, that is assume that the first vector
 /// represents a 4x4 diagonal matrix with the diagonal elements in the vector.
@@ -177,72 +185,42 @@ operator*(const SGVec4<T>& v, S s)
 template<typename T>
 inline
 SGVec4<T>
-mult(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ return SGVec4<T>(v1(0)*v2(0), v1(1)*v2(1), v1(2)*v2(2), v1(3)*v2(3)); }
+mult(SGVec4<T> v1, const SGVec4<T>& v2)
+{ v1.simd4() *= v2.simd4(); return v1; }
 
 /// component wise min
 template<typename T>
 inline
 SGVec4<T>
-min(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{
-  return SGVec4<T>(SGMisc<T>::min(v1(0), v2(0)),
-                   SGMisc<T>::min(v1(1), v2(1)),
-                   SGMisc<T>::min(v1(2), v2(2)),
-                   SGMisc<T>::min(v1(3), v2(3)));
-}
+min(SGVec4<T> v1, const SGVec4<T>& v2)
+{ v1.simd4() = simd4::min(v1.simd4(), v2.simd4()); return v1; }
 template<typename S, typename T>
 inline
 SGVec4<T>
-min(const SGVec4<T>& v, S s)
-{
-  return SGVec4<T>(SGMisc<T>::min(s, v(0)),
-                   SGMisc<T>::min(s, v(1)),
-                   SGMisc<T>::min(s, v(2)),
-                   SGMisc<T>::min(s, v(3)));
-}
+min(SGVec4<T> v, S s)
+{ v.simd4() = simd4::min(v.simd4(), simd4_t<T,4>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec4<T>
-min(S s, const SGVec4<T>& v)
-{
-  return SGVec4<T>(SGMisc<T>::min(s, v(0)),
-                   SGMisc<T>::min(s, v(1)),
-                   SGMisc<T>::min(s, v(2)),
-                   SGMisc<T>::min(s, v(3)));
-}
+min(S s, SGVec4<T> v)
+{ v.simd4() = simd4::min(v.simd4(), simd4_t<T,4>(s)); return v; }
 
 /// component wise max
 template<typename T>
 inline
 SGVec4<T>
-max(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{
-  return SGVec4<T>(SGMisc<T>::max(v1(0), v2(0)),
-                   SGMisc<T>::max(v1(1), v2(1)),
-                   SGMisc<T>::max(v1(2), v2(2)),
-                   SGMisc<T>::max(v1(3), v2(3)));
-}
+max(SGVec4<T> v1, const SGVec4<T>& v2)
+{ v1.simd4() = simd4::max(v1.simd4(), v2.simd4()); return v1; }
 template<typename S, typename T>
 inline
 SGVec4<T>
-max(const SGVec4<T>& v, S s)
-{
-  return SGVec4<T>(SGMisc<T>::max(s, v(0)),
-                   SGMisc<T>::max(s, v(1)),
-                   SGMisc<T>::max(s, v(2)),
-                   SGMisc<T>::max(s, v(3)));
-}
+max(SGVec4<T> v, S s)
+{ v.simd4() = simd4::max(v.simd4(), simd4_t<T,4>(s)); return v; }
 template<typename S, typename T>
 inline
 SGVec4<T>
-max(S s, const SGVec4<T>& v)
-{
-  return SGVec4<T>(SGMisc<T>::max(s, v(0)),
-                   SGMisc<T>::max(s, v(1)),
-                   SGMisc<T>::max(s, v(2)),
-                   SGMisc<T>::max(s, v(3)));
-}
+max(S s, SGVec4<T> v)
+{ v.simd4() = simd4::max(v.simd4(), simd4_t<T,4>(s)); return v; }
 
 /// Add two vectors taking care of (integer) overflows. The values are limited
 /// to the respective minimum and maximum values.
@@ -262,36 +240,39 @@ template<typename T>
 inline
 T
 dot(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ return v1(0)*v2(0) + v1(1)*v2(1) + v1(2)*v2(2) + v1(3)*v2(3); }
+{ return simd4::dot(v1.simd4(), v2.simd4()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 norm(const SGVec4<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd4()); }
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
 inline
 T
 length(const SGVec4<T>& v)
-{ return sqrt(dot(v, v)); }
+{ return simd4::magnitude(v.simd4()); }
 
 /// The 1-norm of the vector, this one is the fastest length function we
 /// can implement on modern cpu's
 template<typename T>
 inline
 T
-norm1(const SGVec4<T>& v)
-{ return fabs(v(0)) + fabs(v(1)) + fabs(v(2)) + fabs(v(3)); }
+norm1(SGVec4<T> v)
+{ v.simd4() = simd4::abs(v.simd4()); return (v(0)+v(1)+v(2)+v(3)); }
 
 /// The inf-norm of the vector
 template<typename T>
 inline
 T
-normI(const SGVec4<T>& v)
-{ return SGMisc<T>::max(fabs(v(0)), fabs(v(1)), fabs(v(2)), fabs(v(2))); }
+normI(SGVec4<T> v)
+{
+  v.simd4() = simd4::abs(v.simd4());
+  return SGMisc<T>::max(v(0), v(1), v(2), v(3));
+}
 
 /// The euclidean norm of the vector, that is what most people call length
 template<typename T>
@@ -389,14 +370,14 @@ template<typename T>
 inline
 T
 dist(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ return norm(v1 - v2); }
+{ return simd4::magnitude(v1.simd4() - v2.simd4()); }
 
 /// The squared euclidean distance of the two vectors
 template<typename T>
 inline
 T
-distSqr(const SGVec4<T>& v1, const SGVec4<T>& v2)
-{ SGVec4<T> tmp = v1 - v2; return dot(tmp, tmp); }
+distSqr(SGVec4<T> v1, const SGVec4<T>& v2)
+{ return simd4::magnitude2(v1.simd4() - v2.simd4()); }
 
 // calculate the projection of u along the direction of d.
 template<typename T>
@@ -404,12 +385,22 @@ inline
 SGVec4<T>
 projection(const SGVec4<T>& u, const SGVec4<T>& d)
 {
-  T denom = dot(d, d);
+  T denom = simd4::magnitude2(d.simd4());
   T ud = dot(u, d);
   if (SGLimits<T>::min() < denom) return u;
   else return d * (dot(u, d) / denom);
 }
 
+template<typename T>
+inline
+SGVec4<T>
+interpolate(T tau, const SGVec4<T>& v1, const SGVec4<T>& v2)
+{
+  SGVec4<T> r;
+  r.simd4() = simd4::interpolate(tau, v1.simd4(), v2.simd4());
+  return r;
+}
+
 #ifndef NDEBUG
 template<typename T>
 inline
@@ -431,11 +422,11 @@ operator<<(std::basic_ostream<char_type, traits_type>& s, const SGVec4<T>& v)
 inline
 SGVec4f
 toVec4f(const SGVec4d& v)
-{ return SGVec4f((float)v(0), (float)v(1), (float)v(2), (float)v(3)); }
+{ SGVec4f f(v); return f; }
 
 inline
 SGVec4d
 toVec4d(const SGVec4f& v)
-{ return SGVec4d(v(0), v(1), v(2), v(3)); }
+{ SGVec4d d(v); return d; }
 
 #endif

simgear/math/interpolater.cxx

@@ -31,7 +31,7 @@
 #include <string>
 
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
 

simgear/math/simd4x4_neon.hxx

@@ -0,0 +1,706 @@
+// Copyright (C) 2016 Erik Hofman - erik@ehofman.com
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+//
+
+#ifndef __SIMD4X4_NEON_H__
+#define __SIMD4X4_NEON_H__	1
+
+#include "simd_neon.hxx"
+
+#ifdef __ARM_NEON__
+template<>
+class simd4x4_t<float,4>
+{
+private:
+    typedef float  __mtx4f_t[4][4];
+
+    union alignas(16) {
+        float32x4_t simd4x4[4];
+        __mtx4f_t mtx;
+        float array[4*4];
+    }g;
+
+public:
+    simd4x4_t(void) {}
+    simd4x4_t(float m00, float m01, float m02, float m03,
+              float m10, float m11, float m12, float m13,
+              float m20, float m21, float m22, float m23,
+              float m30, float m31, float m32, float m33)
+    {
+        array[0] = m00; array[1] = m10;
+        array[2] = m20; array[3] = m30;
+        array[4] = m01; array[5] = m11;
+        array[6] = m21; array[7] = m31;
+        array[8] = m02; array[9] = m12;
+        array[10] = m22; array[11] = m32;
+        array[12] = m03; array[13] = m13;
+        array[14] = m23; array[15] = m33;
+    }
+    simd4x4_t(const float m[4*4]) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<float,4>((const float*)&m[4*i]).v4();
+        }
+    }
+
+    explicit simd4x4_t(const __mtx4f_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<float,4>(m[i]).v4();
+        }
+    }
+    simd4x4_t(const simd4x4_t<float,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+    }
+    ~simd4x4_t(void) {}
+
+    inline float32x4_t (&m4x4(void))[4] {
+        return simd4x4;
+    }
+
+    inline const float32x4_t (&m4x4(void) const)[4] {
+        return simd4x4;
+    }
+    
+    inline const float (&ptr(void) const)[4][4] {
+        return mtx;
+    }
+
+    inline float (&ptr(void))[4][4] {
+        return mtx;
+    }
+
+    inline operator const float*(void) const {
+        return array;
+    }
+
+    inline operator float*(void) {
+        return array;
+    }
+
+    template<int M>
+    inline void set(int i, const simd4_t<float,M>& v) {
+        simd4x4[i] = v.v4();
+    }
+
+    inline simd4x4_t<float,4>& operator=(const __mtx4f_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<float,4>(m[i]).v4();
+        }
+        return *this;
+    }
+    inline simd4x4_t<float,4>& operator=(const simd4x4_t<float,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<float,4>& operator+=(const simd4x4_t<float,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = vaddq_f32(simd4x4[i], m.m4x4()[i]);
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<float,4>& operator-=(const simd4x4_t<float,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = vsubq_f32(simd4x4[i], m.m4x4()[i]);
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<float,4>& operator*=(float f) {
+        simd4_t<float,4> f4(f);
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = vmulq_f32(simd4x4[i], f4.v4());
+        }
+        return *this;
+    }
+
+    simd4x4_t<float,4>& operator*=(const simd4x4_t<float,4>& m2) {
+        simd4x4_t<float,4> m1 = *this;
+        float32x4_t row, col;
+        for (int i=0; i<4; ++i) {
+            col = vdupq_n_f32(m2.ptr()[i][0]);
+            row = vmulq_f32(m1.m4x4()[0], col);
+            for (int j=1; j<4; ++j) {
+                col = vdupq_n_f32(m2.ptr()[i][j]);
+                row = vaddq_f32(row, vmulq_f32(m1.m4x4()[j], col));
+            }
+            simd4x4[i] = row;
+        }
+        return *this;
+    }
+};
+
+template<int M>
+inline simd4_t<float,M> operator*(const simd4x4_t<float,4>& m, const simd4_t<float,M>& vi)
+{
+    float32x4_t mv = vmulq_f32(m.m4x4()[0], vdupq_n_f32(vi.ptr()[0]));
+    for (int i=1; i<M; ++i) {
+        float32x4_t row = vmulq_f32(m.m4x4()[i], vdupq_n_f32(vi.ptr()[i]));
+        mv = vaddq_f32(mv, row);
+    }
+    return mv;
+}
+
+namespace simd4x4
+{
+
+template<>
+inline simd4x4_t<float,4> rotation_matrix<float>(float angle, const simd4_t<float,3>& axis)
+{
+    float s = std::sin(angle), c = std::cos(angle), t = 1.0-c;
+    simd4_t<float,3> axt, at = axis*t, as = axis*s;
+    simd4x4_t<float,4> m;
+
+    simd4x4::unit(m);
+    axt = axis.ptr()[0]*at;
+    m.m4x4()[0] = axt.v4();
+
+    axt = axis.ptr()[1]*at;
+    m.ptr()[0][0] += c;
+    m.ptr()[0][1] += as.ptr()[2];
+    m.ptr()[0][2] -= as.ptr()[1];
+
+    m.m4x4()[1] = axt.v4();
+
+    axt = axis.ptr()[2]*at;
+    m.ptr()[1][0] -= as.ptr()[2];
+    m.ptr()[1][1] += c;
+    m.ptr()[1][2] += as.ptr()[0];
+
+    m.m4x4()[2] = axt.v4();
+
+    m.ptr()[2][0] += as.ptr()[1];
+    m.ptr()[2][1] -= as.ptr()[0];
+    m.ptr()[2][2] += c;
+
+    return m;
+}
+
+template<>
+inline simd4x4_t<float,4> transpose<float>(simd4x4_t<float,4> m) {
+// http://clb.demon.fi/MathGeoLib/nightly/docs/float4x4_neon.h_code.html
+    float32x4x4_t x = vld4q_f32(m);
+    vst1q_f32(&m[0], x.val[0]);
+    vst1q_f32(&m[4], x.val[1]);
+    vst1q_f32(&m[8], x.val[2]);
+    vst1q_f32(&m[12], x.val[3]);
+    return m;
+}
+
+inline void translate(simd4x4_t<float,4>& m, const simd4_t<float,3>& dist) {
+    m.m4x4()[3] = vsubq_f32(m.m4x4()[3], dist.v4());
+}
+
+template<typename S>
+inline void pre_translate(simd4x4_t<float,4>& m, const simd4_t<S,3>& dist)
+{
+    simd4x4_t<float,4> mt = simd4x4::transpose(m);
+    float32x4_t row3 = mt.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        float32x4_t t = vdupq_n_f32(float(dist[i]));
+        mt.m4x4()[i] = vaddq_f32(mt.m4x4()[i], vmulq_f32(t, row3));
+    }
+    m = simd4x4::transpose(mt);
+}
+
+template<typename S>
+inline void post_translate(simd4x4_t<float,4>& m, const simd4_t<S,3>& dist)
+{
+    float32x4_t col3 = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        float32x4_t t = vdupq_n_f32(float(dist[i]));
+        col3 = vaddq_f32(col3, vmulq_f32(t, m.m4x4()[i]));
+    }
+    m.m4x4()[3] = col3;
+}
+
+template<>
+inline simd4_t<float,3> transform<float>(const simd4x4_t<float,4>& m, const simd4_t<float,3>& pt) {
+    float32x4_t tpt = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        float32x4_t ptd = vdupq_n_f32(pt[i]);
+        tpt = vaddq_f32(tpt, vmulq_f32(ptd, m.m4x4()[i]));
+    }
+    vsetq_lane_f32(0.0f, tpt, 3);
+    return tpt;
+}
+
+} /* namespace simd4x */
+
+
+
+#if 0
+
+template<>
+class simd4x4_t<double,4>
+{
+private:
+    typedef double  __mtx4d_t[4][4];
+
+    union alignas(32) {
+        __m256d simd4x4[4];
+        __mtx4d_t mtx;
+        double array[4*4];
+    };
+
+public:
+    simd4x4_t(void) {}
+    simd4x4_t(double m00, double m01, double m02, double m03,
+              double m10, double m11, double m12, double m13,
+              double m20, double m21, double m22, double m23,
+              double m30, double m31, double m32, double m33)
+    {
+        simd4x4[0] = _mm256_set_pd(m30,m20,m10,m00);
+        simd4x4[1] = _mm256_set_pd(m31,m21,m11,m01);
+        simd4x4[2] = _mm256_set_pd(m32,m22,m12,m02);
+        simd4x4[3] = _mm256_set_pd(m33,m23,m13,m03);
+    }
+    explicit simd4x4_t(const double m[4*4]) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<double,4>((const double*)&m[4*i]).v4();
+        }
+    }
+
+    explicit simd4x4_t(const __mtx4d_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<double,4>(m[i]).v4();
+        }
+    }
+    simd4x4_t(const simd4x4_t<double,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+    }
+    ~simd4x4_t(void) {}
+
+    inline __m256d (&m4x4(void))[4] {
+        return simd4x4;
+    }
+
+    inline const __m256d (&m4x4(void) const)[4] {
+        return simd4x4;
+    }
+
+    inline const double (&ptr(void) const)[4][4] {
+        return mtx;
+    }
+
+    inline double (&ptr(void))[4][4] {
+        return mtx;
+    }
+
+    inline operator const double*(void) const {
+        return array;
+    }
+
+    inline operator double*(void) {
+        return array;
+    }
+
+    template<int M>
+    inline void set(int i, const simd4_t<double,M>& v) {
+        simd4x4[i] = v.v4();
+    }
+
+    inline simd4x4_t<double,4>& operator=(const __mtx4d_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<double,4>(m[i]).v4();
+        }
+        return *this;
+    }
+    inline simd4x4_t<double,4>& operator=(const simd4x4_t<double,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<double,4>& operator+=(const simd4x4_t<double,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = _mm256_add_pd(simd4x4[i], m.m4x4()[i]);
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<double,4>& operator-=(const simd4x4_t<double,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = _mm256_sub_pd(simd4x4[i], m.m4x4()[i]);
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<double,4>& operator*=(double f) {
+        simd4_t<double,4> f4(f);
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] = _mm256_mul_pd(simd4x4[i], f4.v4());
+        }
+        return *this;
+    }
+
+    simd4x4_t<double,4>& operator*=(const simd4x4_t<double,4>& m2) {
+        simd4x4_t<double,4> m1 = *this;
+        __m256d row, col;
+        for (int i=0; i<4; ++i ) {
+            col = _mm256_set1_pd(m2.ptr()[i][0]);
+            row = _mm256_mul_pd(m1.m4x4()[0], col);
+            for (int j=1; j<4; ++j) {
+                col = _mm256_set1_pd(m2.ptr()[i][j]);
+                row = _mm256_add_pd(row, _mm256_mul_pd(m1.m4x4()[j], col));
+            }
+            simd4x4[i] = row;
+        }
+        return *this;
+    }
+
+};
+
+template<int M>
+inline simd4_t<double,M> operator*(const simd4x4_t<double,4>& m, const simd4_t<double,M>& vi)
+{
+    __m256d mv = _mm256_mul_pd(m.m4x4()[0], _mm256_set1_pd(vi.ptr()[0]));
+    for (int i=1; i<M; ++i) {
+        __m256d row = _mm256_mul_pd(m.m4x4()[i], _mm256_set1_pd(vi.ptr()[i]));
+        mv = _mm256_add_pd(mv, row);
+    }
+    return mv;
+}
+
+namespace simd4x4
+{
+
+template<>
+inline simd4x4_t<double,4> rotation_matrix<double>(double angle, const simd4_t<double,3>& axis)
+{
+    double s = std::sin(angle), c = std::cos(angle), t = 1.0-c;
+    simd4_t<double,3> axt, at = axis*t, as = axis*s;
+    simd4x4_t<double,4> m;
+
+    simd4x4::unit(m);
+    axt = axis.ptr()[0]*at;
+    m.m4x4()[0] = axt.v4();
+
+    axt = axis.ptr()[1]*at;
+    m.ptr()[0][0] += c;
+    m.ptr()[0][1] += as.ptr()[2];
+    m.ptr()[0][2] -= as.ptr()[1];
+
+    m.m4x4()[1] = axt.v4();
+
+    axt = axis.ptr()[2]*at;
+    m.ptr()[1][0] -= as.ptr()[2];
+    m.ptr()[1][1] += c;
+    m.ptr()[1][2] += as.ptr()[0];
+
+    m.m4x4()[2] = axt.v4();
+
+    m.ptr()[2][0] += as.ptr()[1];
+    m.ptr()[2][1] -= as.ptr()[0];
+    m.ptr()[2][2] += c;
+
+    return m;
+}
+
+template<>
+inline simd4x4_t<double,4> transpose<double>(simd4x4_t<double,4> m) {
+// http://stackoverflow.com/questions/36167517/m256d-transpose4-equivalent
+    __m256d tmp0 = _mm256_shuffle_pd(m.m4x4()[0], m.m4x4()[1], 0x0);
+    __m256d tmp2 = _mm256_shuffle_pd(m.m4x4()[0], m.m4x4()[1], 0xF);
+    __m256d tmp1 = _mm256_shuffle_pd(m.m4x4()[2], m.m4x4()[3], 0x0);
+    __m256d tmp3 = _mm256_shuffle_pd(m.m4x4()[2], m.m4x4()[3], 0xF);
+
+    m.m4x4()[0] = _mm256_permute2f128_pd(tmp0, tmp1, 0x20);
+    m.m4x4()[1] = _mm256_permute2f128_pd(tmp2, tmp3, 0x20);
+    m.m4x4()[2] = _mm256_permute2f128_pd(tmp0, tmp1, 0x31);
+    m.m4x4()[3] = _mm256_permute2f128_pd(tmp2, tmp3, 0x31);
+
+    return m;
+}
+
+inline void translate(simd4x4_t<double,4>& m, const simd4_t<double,3>& dist) {
+    m.m4x4()[3] = _mm256_sub_pd(m.m4x4()[3], dist.v4());
+}
+
+template<typename S>
+inline void pre_translate(simd4x4_t<double,4>& m, const simd4_t<S,3>& dist)
+{
+    simd4_t<double,4> row3(m.ptr()[0][3],m.ptr()[1][3],m.ptr()[2][3],m.ptr()[3][3]);
+    for (int i=0; i<3; ++i) {
+        for (int j=0; j<4; ++j) {
+            m.ptr()[j][i] += row3[j]*double(dist[i]);
+        }
+    }
+#if 0
+    // this is slower
+    simd4x4_t<double,4> mt = simd4x4::transpose(m);
+    __mm256d row3 = mt.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        __mm256d _mm256_set1_pd(float(dist[i]));
+        mt.m4x4()[i] = _mm256_add_pd(mt.m4x4()[i], _mm256_mul_pd(t, row3));
+    }
+    m = simd4x4::transpose(mt);
+#endif
+}
+
+template<typename S>
+inline void post_translate(simd4x4_t<double,4>& m, const simd4_t<S,3>& dist) {
+    __m256d col3 = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        __m256d t = _mm256_set1_pd(double(dist[i]));
+        col3 = _mm256_add_pd(col3, _mm256_mul_pd(t, m.m4x4()[i]));
+    }
+    m.m4x4()[3] = col3;
+}
+
+template<>
+inline simd4_t<double,3> transform<double>(const simd4x4_t<double,4>& m, const simd4_t<double,3>& pt) {
+    simd4_t<double,3> res;
+    __m256d tpt = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        __m256d ptd = _mm256_set1_pd(pt[i]);
+        tpt = _mm256_add_pd(tpt, _mm256_mul_pd(ptd, m.m4x4()[i]));
+    }
+    res = tpt;
+    res[3] = 0.0;
+    return res;
+}
+
+} /* namespace simd4x4 */
+# endif
+
+
+template<>
+class simd4x4_t<int,4>
+{
+private:
+    typedef int  __mtx4i_t[4][4];
+
+    union alignas(16) {
+        int32x4_t simd4x4[4];
+        __mtx4i_t mtx;
+        int array[4*4];
+    }g;
+
+public:
+    simd4x4_t(void) {}
+    simd4x4_t(int m00, int m01, int m02, int m03,
+              int m10, int m11, int m12, int m13,
+              int m20, int m21, int m22, int m23,
+              int m30, int m31, int m32, int m33)
+    {
+        array[0] = m00; array[1] = m10;
+        array[2] = m20; array[3] = m30;
+        array[4] = m01; array[5] = m11;
+        array[6] = m21; array[7] = m31;
+        array[8] = m02; array[9] = m12;
+        array[10] = m22; array[11] = m32;
+        array[12] = m03; array[13] = m13;
+        array[14] = m23; array[15] = m33;
+    }
+    simd4x4_t(const int m[4*4]) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<int,4>((const int*)&m[4*i]).v4();
+        }
+    }
+    explicit simd4x4_t(const __mtx4i_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<int,4>(m[i]).v4();
+        }
+    }
+    simd4x4_t(const simd4x4_t<int,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+    }
+    ~simd4x4_t(void) {}
+
+    inline int32x4_t (&m4x4(void))[4] {
+        return simd4x4;
+    }
+
+    inline const int32x4_t (&m4x4(void) const)[4] {
+        return simd4x4;
+    }
+    
+    inline const int (&ptr(void) const)[4][4] {
+        return mtx;
+    }
+
+    inline int (&ptr(void))[4][4] {
+        return mtx;
+    }
+
+    inline operator const int*(void) const {
+        return array;
+    }
+
+    inline operator int*(void) {
+        return array;
+    }
+
+    template<int M>
+    inline void set(int i, const simd4_t<int,M>& v) {
+        simd4x4[i] = v.v4();
+    }
+
+    inline simd4x4_t<int,4>& operator=(const __mtx4i_t m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = simd4_t<int,4>(m[i]).v4();
+        }
+        return *this;
+    }
+    inline simd4x4_t<int,4>& operator=(const simd4x4_t<int,4>& m) {
+        for (int i=0; i<4; ++i) {
+            simd4x4[i] = m.m4x4()[i];
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<int,4>& operator+=(const simd4x4_t<int,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] += m.m4x4()[i];
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<int,4>& operator-=(const simd4x4_t<int,4>& m) {
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] -= m.m4x4()[i];
+        }
+        return *this;
+    }
+
+    inline simd4x4_t<int,4>& operator*=(int f) {
+        simd4_t<int,4> f4(f);
+        for (int i=0; i<4; ++i) {
+           simd4x4[i] *= f4.v4();
+        }
+        return *this;
+    }
+
+    simd4x4_t<int,4>& operator*=(const simd4x4_t<int,4>& m2) {
+        simd4x4_t<int,4> m1 = *this;
+        simd4_t<int,4> row, col;
+
+        for (int i=0; i<4; ++i) {
+            simd4_t<int,4> col(m2.ptr()[i][0]);
+            row.v4() = m1.m4x4()[0] * col.v4();
+            for (int j=1; j<4; ++j) {
+                simd4_t<int,4> col(m2.ptr()[i][j]);
+                row.v4() += m1.m4x4()[j] * col.v4();
+            }
+            simd4x4[i] = row.v4();
+        }
+        return *this;
+    }
+};
+
+template<int M>
+inline simd4_t<int,M> operator*(const simd4x4_t<int,4>& m, const simd4_t<int,M>& vi)
+{
+    simd4_t<int,M> mv(m.m4x4()[0]);
+    mv *= vi.ptr()[0];
+    for (int i=1; i<M; ++i) {
+        simd4_t<int,4> row(m.m4x4()[i]);
+        row *= vi.ptr()[i];
+        mv.v4() += row.v4();
+    }
+    for (int i=M; i<4; ++i) mv[i] = 0;
+    return mv;
+}
+
+template<>
+inline simd4x4_t<int,4> operator*(const simd4x4_t<int,4>& m1, const simd4x4_t<int,4>& m2)
+{
+    simd4_t<int,4> row, col;
+    simd4x4_t<int,4> m;
+
+    for (int i=0; i<4; ++i) {
+        simd4_t<int,4> col(m2.ptr()[i][0]);
+        row.v4() = m1.m4x4()[0] * col.v4();
+        for (int j=1; j<4; ++j) {
+            simd4_t<int,4> col(m2.ptr()[i][j]);
+            row.v4() += m1.m4x4()[j] * col.v4();
+        }
+        m.m4x4()[i] = row.v4();
+    }
+
+    return m;
+}
+
+namespace simd4x4
+{
+
+template<>
+inline simd4x4_t<int,4> transpose<int>(simd4x4_t<int,4> m) {
+    int32x4x4_t x = vld4q_s32(m);
+    vst1q_s32(&m[0], x.val[0]);
+    vst1q_s32(&m[4], x.val[1]);
+    vst1q_s32(&m[8], x.val[2]);
+    vst1q_s32(&m[12], x.val[3]);
+    return m;
+}
+
+inline void translate(simd4x4_t<int,4>& m, const simd4_t<int,3>& dist) {
+    m.m4x4()[3] = vsubq_s32(m.m4x4()[3], dist.v4());
+}
+
+template<typename S>
+inline void pre_translate(simd4x4_t<int,4>& m, const simd4_t<S,3>& dist)
+{
+    simd4x4_t<int,4> mt = simd4x4::transpose(m);
+    simd4_t<int,4> row3(mt.ptr()[3]);
+    for (int i=0; i<3; ++i) {
+        simd4_t<int,4> trow3 = int(dist[i]);
+        trow3 *= row3.v4();
+        mt.m4x4()[i] = vaddq_s32(mt.m4x4()[i], trow3.v4());
+    }
+    m = simd4x4::transpose(mt);
+}
+
+template<typename S>
+inline void post_translate(simd4x4_t<int,4>& m, const simd4_t<S,3>& dist)
+{
+    int32x4_t col3 = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        simd4_t<int,4> trow3 = int(dist[i]);
+        trow3 *= m.m4x4()[i];
+        col3 = vaddq_s32(col3, trow3.v4());
+    }
+    m.m4x4()[3] = col3;
+}
+
+template<>
+inline simd4_t<int,3> transform<int>(const simd4x4_t<int,4>& m, const simd4_t<int,3>& pt) {
+    simd4_t<int,3> tpt = m.m4x4()[3];
+    for (int i=0; i<3; ++i) {
+        simd4_t<int,3> ptd = m.m4x4()[i];
+        ptd *= pt[i];
+        tpt.v4() = vaddq_s32(tpt.v4(), ptd.v4());
+    }
+    tpt[3] = 0.0;
+    return tpt;
+}
+
+
+} /* namespace simd4x */
+#endif
+
+#endif /* __SIMD4X4_NEON_H__ */
+

simgear/math/simd_neon.hxx

@@ -0,0 +1,545 @@
+// Copyright (C) 2016 Erik Hofman - erik@ehofman.com
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+//
+
+#ifndef __SIMD_NEON_H__
+#define __SIMD_NEON_H__	1
+
+#ifdef __ARM_NEON__
+
+static const uint32_t m2a32[] alignas(16) = { 0xffffffff,0xffffffff,0,0 };
+static const uint32_t m3a32[] alignas(16) = { 0xffffffff,0xffffffff,0xffffffff,0 };
+
+template<int N>
+class simd4_t<float,N>
+{
+private:
+   typedef float  __vec4f_t[N];
+
+    union alignas(16) {
+        float32x4_t simd4;
+        float32x2x2_t simd2x2;
+        __vec4f_t vec;
+    };
+
+public:
+    simd4_t(void) {}
+    simd4_t(float f) {}
+    simd4_t(float x, float y) : simd4_t(x,y,0,0) {}
+    simd4_t(float x, float y, float z) : simd4_t(x,y,z,0) {}
+    simd4_t(float x, float y, float z, float w) {
+        alignas(16) float data[4] = { x, y, z, w };
+        simd4 = vld1q_f32(data);
+    }
+    simd4_t(const __vec4f_t v) {}
+    template<int M>
+    simd4_t(const simd4_t<float,M>& v) {
+        simd4 = v.v4();
+    }
+    simd4_t(const float32x4_t& v) {
+        simd4 = v;
+    }
+
+    inline const float32x2x2_t (&v2x2(void) const) {
+        return simd2x2;
+    }
+    inline float32x2x2_t (&v2x2(void)) {
+        return simd2x2;
+    }
+
+    inline const float32x4_t (&v4(void) const) {
+        return simd4;
+    }
+    inline float32x4_t (&v4(void)) {
+        return simd4;
+    }
+
+    inline const float (&ptr(void) const)[N] {
+        return vec;
+    }
+    inline float (&ptr(void))[N] {
+        return vec;
+    }
+
+    inline operator const float*(void) const {
+        return vec;
+    }
+    inline operator float*(void) {
+        return vec;
+    }
+
+    inline simd4_t<float,N>& operator+=(float f) {
+        return operator+=(simd4_t<float,N>(f));
+    }
+    template<int M>
+    inline simd4_t<float,N>& operator+=(const simd4_t<float,M>& v) {
+        simd4 = vaddq_f32(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<float,N>& operator-=(float f) {
+        return operator-=(simd4_t<float,N>(f));
+    }
+    template<int M>
+    inline simd4_t<float,N>& operator-=(const simd4_t<float,M>& v) {
+        simd4 = vsubq_f32(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<float,N>& operator*=(float f) {
+        return operator*=(simd4_t<float,N>(f));
+    }
+    template<int M>
+    inline simd4_t<float,N>& operator*=(const simd4_t<float,M>& v) {
+        simd4 = vmulq_f32(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<float,N>& operator/=(float f) {
+        return operator/=(simd4_t<float,4>(f));
+    }
+    template<int M>
+    inline simd4_t<float,N>& operator/=(const simd4_t<float,M>& v) {
+// http://stackoverflow.com/questions/6759897/how-to-divide-in-neon-intrinsics-by-a-float-number
+        float32x4_t recip = vrecpeq_f32(v.v4());
+        recip = vmulq_f32(vrecpsq_f32(v.v4(), recip), recip);
+        recip = vmulq_f32(vrecpsq_f32(v.v4(), recip), recip);
+        recip = vmulq_f32(vrecpsq_f32(v.v4(), recip), recip);
+        simd4 = vmulq_f32(simd4, recip);
+        return *this;
+    }
+};
+ 
+# define vandq_f32(a,b) vreinterpretq_f32_u32(vandq_u32(vreinterpretq_u32_f32(a), vreinterpretq_u32_f32(b)))
+
+static const float32x4_t fmask2 = vld1q_f32((const float*)m2a32);
+static const float32x4_t fmask3 = vld1q_f32((const float*)m3a32);
+
+template<>
+inline simd4_t<float,4>::simd4_t(const __vec4f_t v) {
+    simd4 = vld1q_f32(v);
+}
+template<>
+inline simd4_t<float,3>::simd4_t(const __vec4f_t v) {
+    simd4 = vandq_f32(vld1q_f32(v), fmask3);
+}
+template<>
+inline simd4_t<float,2>::simd4_t(const __vec4f_t v) {
+    simd4 = vandq_f32(vld1q_f32(v), fmask2);
+}
+template<>
+inline simd4_t<float,4>::simd4_t(float f) {
+    simd4 = vdupq_n_f32(f);
+}
+template<>
+inline simd4_t<float,3>::simd4_t(float f) {
+    simd4 = vandq_f32(vdupq_n_f32(f), fmask3);
+}
+
+template<>
+inline simd4_t<float,2>::simd4_t(float f) {
+    simd4 = vandq_f32(vdupq_n_f32(f), fmask2);
+}
+
+
+namespace simd4
+{
+// http://stackoverflow.com/questions/6931217/sum-all-elements-in-a-quadword-vector-in-arm-assembly-with-neon
+inline static float hsum_float32x4_neon(float32x4_t v) {
+    float32x2_t r = vadd_f32(vget_high_f32(v), vget_low_f32(v));
+    return vget_lane_f32(vpadd_f32(r, r), 0);
+}
+
+template<>
+inline float magnitude2(simd4_t<float,4> v) {
+    return hsum_float32x4_neon(v.v4()*v.v4());
+}
+
+template<>
+inline float dot(simd4_t<float,4> v1, const simd4_t<float,4>& v2) {
+    return hsum_float32x4_neon(v1.v4()*v2.v4());
+}
+
+template<>
+inline simd4_t<float,3> cross(const simd4_t<float,3>& v1, const simd4_t<float,3>& v2)
+{
+    // from 0123 to 0213
+    float32x2x2_t v1lh_2013 = vzip_f32(v1.v2x2().val[0], v1.v2x2().val[1]);
+    float32x2x2_t v2lh_2013 = vzip_f32(v2.v2x2().val[0], v2.v2x2().val[1]);
+
+    // from 0213 to 2013
+    v1lh_2013.val[0] = vrev64_f32(v1lh_2013.val[0]);
+    v2lh_2013.val[0] = vrev64_f32(v2lh_2013.val[0]);
+
+    float32x4_t v1_2013 = vcombine_f32(v1lh_2013.val[0], v1lh_2013.val[1]);
+    float32x4_t v2_2013 = vcombine_f32(v2lh_2013.val[0], v2lh_2013.val[1]);
+
+    // from 2013 to 2103
+    float32x2x2_t v1lh_1203 = vzip_f32(v1lh_2013.val[0], v1lh_2013.val[1]);
+    float32x2x2_t v2lh_1203 = vzip_f32(v2lh_2013.val[0], v2lh_2013.val[1]);
+
+    // from 2103 to 1203
+    v1lh_1203.val[0] = vrev64_f32(v1lh_1203.val[0]);
+    v2lh_1203.val[0] = vrev64_f32(v2lh_1203.val[0]);
+
+    float32x4_t v1_1203 = vcombine_f32(v1lh_1203.val[0], v1lh_1203.val[1]);
+    float32x4_t v2_1203 = vcombine_f32(v2lh_1203.val[0], v2lh_1203.val[1]);
+
+    // calculate the cross product
+    return vsubq_f32(vmulq_f32(v1_1203,v2_2013),vmulq_f32(v1_2013,v2_1203));
+}
+
+
+template<int N>
+inline simd4_t<float,N> min(simd4_t<float,N> v1, const simd4_t<float,N>& v2) {
+    v1 = vminq_f32(v1.v4(), v2.v4());
+    return v1;
+}
+
+template<int N>
+inline simd4_t<float,N> max(simd4_t<float,N> v1, const simd4_t<float,N>& v2) {
+    v1 = vmaxq_f32(v1.v4(), v2.v4());
+    return v1;
+}
+
+template<int N>
+inline simd4_t<float,N>abs(simd4_t<float,N> v) {
+    return vabsq_f32(v.v4());
+}
+
+} /* namsepace simd4 */
+
+
+// TODO: 64-bit support for doubles
+#if 0
+template<int N>
+class simd4_t<double,N>
+{
+private:
+   typedef double  __vec4d_t[N];
+
+    union alignas(32) {
+        __m256d simd4;
+        __vec4d_t vec;
+    };
+
+public:
+    simd4_t(void) {}
+    simd4_t(double d) {}
+    simd4_t(double x, double y) : simd4_t(x,y,0,0) {}
+    simd4_t(double x, double y, double z) : simd4_t(x,y,z,0) {}
+    simd4_t(double x, double y, double z, double w) {
+        simd4 = _mm256_set_pd(w,z,y,x);
+    }
+    simd4_t(const __vec4d_t v) { {}
+    template<int M>
+    simd4_t(const simd4_t<double,M>& v) {
+        simd4 = v.v4();
+    }
+    simd4_t(const __m256d& v) {
+        simd4 = v;
+    }
+
+    inline const __m256d (&v4(void) const) {
+        return simd4;
+    }
+    inline __m256d (&v4(void)) {
+        return simd4;
+    }
+
+    inline const double (&ptr(void) const)[N] {
+        return vec;
+    }
+    inline double (&ptr(void))[N] {
+        return vec;
+    }
+
+    inline operator const double*(void) const {
+        return vec;
+    }
+    inline operator double*(void) {
+        return vec;
+    }
+
+    inline simd4_t<double,N>& operator+=(double d) {
+        return operator+=(simd4_t<double,N>(d));
+    }
+    template<int M>
+    inline simd4_t<double,N>& operator+=(const simd4_t<double,M>& v) {
+        simd4 = _mm256_add_pd(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<double,N>& operator-=(double d) {
+        return operator-=(simd4_t<double,N>(d));
+    }
+    template<int M>
+    inline simd4_t<double,N>& operator-=(const simd4_t<double,M>& v) {
+        simd4 = _mm256_sub_pd(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<double,N>& operator*=(double d) {
+        return operator*=(simd4_t<double,N>(d));
+    }
+    template<int M>
+    inline simd4_t<double,N>& operator*=(const simd4_t<double,M>& v) {
+        simd4 = _mm256_mul_pd(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<double,N>& operator/=(double d) {
+        return operator/=(simd4_t<double,4>(d));
+    }
+    template<int M>
+    inline simd4_t<double,N>& operator/=(const simd4_t<double,M>& v) {
+        simd4 = _mm256_div_pd(simd4, v.v4());
+        return *this;
+    }
+};
+
+static const __m256d dmask2 = _mm256_load_pd((const double*)m2a64);
+static const __m256d dmask3 = _mm256_load_pd((const double*)m3a64);
+
+template<>
+inline simd4_t<double,4>::simd4_t(const __vec4d_t v) {
+    simd4 = _mm256_loadu_pd(v);
+}
+template<>
+inline simd4_t<double,3>::simd4_t(const __vec4d_t v) {
+    simd4 = _mm256_and_pd(_mm256_loadu_pd(v), dmask3);
+}
+template<>
+inline simd4_t<double,2>::simd4_t(const __vec4d_t v) {
+    simd4 = _mm256_and_pd(_mm256_loadu_pd(v), dmask2);
+}
+template<>
+inline simd4_t<double,4>::simd4_t(double d) {
+    simd4 = _mm256_set1_pd(d);
+}
+template<>
+inline simd4_t<double,3>::simd4_t(double d) {
+    simd4 = _mm256_and_pd(_mm256_set1_pd(d), dmask3);
+}
+template<>
+inline simd4_t<double,2>::simd4_t(double d) {
+    simd4 = _mm256_and_pd(_mm256_set1_pd(d), dmask2);
+}
+
+namespace simd4
+{
+// http://berenger.eu/blog/sseavxsimd-horizontal-sum-sum-simd-vector-intrinsic/
+inline static float hsum_pd_avx(__m256d v) {
+    const float64x4_t valupper = _mm256_extractf128_pd(v, 1);
+    const float64x4_t vallower = _mm256_castpd256_pd128(v);
+    _mm256_zeroupper();
+    const float64x4_t valval = _mm_add_pd(valupper, vallower);
+    const float64x4_t sums =   _mm_add_pd(_mm_permute_pd(valval,1), valval);
+    return                 _mm_cvtsd_f64(sums);
+}
+
+template<>
+inline double magnitude2(simd4_t<double,4> v) {
+    return hsum_pd_avx(_mm256_mul_pd(v.v4(),v.v4()));
+}
+
+template<>
+inline double dot(simd4_t<double,4> v1, const simd4_t<double,4>& v2) {
+    return hsum_pd_avx(_mm256_mul_pd(v1.v4(),v2.v4()));
+}
+
+template<>
+inline simd4_t<double,3> cross(const simd4_t<double,3>& v1, const simd4_t<double,3>& v2)
+{
+    // https://gist.github.com/L2Program/219e07581e69110e7942
+    __m256d v41 = v1.v4(), v42 = v2.v4();
+    return _mm256_sub_pd(
+               _mm256_mul_pd(
+                     _mm256_permute4x64_pd(v41,_MM_SHUFFLE(3, 0, 2, 1)),
+                     _mm256_permute4x64_pd(v42,_MM_SHUFFLE(3, 1, 0, 2))),
+               _mm256_mul_pd(
+                     _mm256_permute4x64_pd(v41,_MM_SHUFFLE(3, 1, 0, 2)),
+                     _mm256_permute4x64_pd(v42,_MM_SHUFFLE(3, 0, 2, 1))));
+}
+
+template<int N>
+inline simd4_t<double,N> min(simd4_t<double,N> v1, const simd4_t<double,N>& v2) {
+    v1 = _mm256_min_pd(v1.v4(), v2.v4());
+    return v1;
+}
+
+template<int N>
+inline simd4_t<double,N> max(simd4_t<double,N> v1, const simd4_t<double,N>& v2) {
+    v1 = _mm256_max_pd(v1.v4(), v2.v4());
+    return v1;
+}
+
+template<int N>
+inline simd4_t<double,N>abs(simd4_t<double,N> v) {
+    static const __m256d sign_mask = _mm256_set1_pd(-0.); // -0. = 1 << 63
+    v = _mm256_andnot_pd(sign_mask, v.v4());
+    return v;
+}
+
+} /* namespace simd4 */
+#endif
+
+
+template<int N>
+class simd4_t<int,N>
+{
+private:
+   typedef int  __vec4i_t[N];
+
+    union alignas(16) {
+        int32x4_t simd4;
+        __vec4i_t vec;
+    };
+
+public:
+    simd4_t(void) {}
+    simd4_t(int i) {}
+    simd4_t(int x, int y) : simd4_t(x,y,0,0) {}
+    simd4_t(int x, int y, int z) : simd4_t(x,y,z,0) {}
+    simd4_t(int x, int y, int z, int w) {
+        alignas(16) int32_t data[4] = { x, y, z, w };
+        simd4 = vld1q_s32(data);
+    }
+    simd4_t(const __vec4i_t v) {}
+    template<int M>
+    simd4_t(const simd4_t<int,M>& v) {
+        simd4 = v.v4();
+    }
+    simd4_t(const int32x4_t& v) {
+        simd4 = v;
+    }
+
+    inline int32x4_t (&v4(void)) {
+        return simd4;
+    }
+
+    inline const int32x4_t (&v4(void) const) {
+        return simd4;
+    }
+
+    inline const int (&ptr(void) const)[N] {
+        return vec;
+    }
+
+    inline int (&ptr(void))[N] {
+        return vec;
+    }
+
+    inline operator const int*(void) const {
+        return vec;
+    }
+
+    inline operator int*(void) {
+        return vec;
+    }
+
+    inline simd4_t<int,N>& operator+=(int i) {
+        return operator+=(simd4_t<int,N>(i));
+    }
+    template<int M>
+    inline simd4_t<int,N>& operator+=(const simd4_t<int,M>& v) {
+        simd4 = vaddq_s32(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<int,N>& operator-=(int i) {
+        return operator-=(simd4_t<int,N>(i));
+    }
+    template<int M>
+    inline simd4_t<int,N>& operator-=(const simd4_t<int,M>& v) {
+        simd4 = vsubq_s32(simd4, v.v4());
+        return *this;
+    }
+
+    inline simd4_t<int,N>& operator*=(int i) {
+        return operator*=(simd4_t<int,N>(i));
+    }
+    template<int M>
+    inline simd4_t<int,N>& operator*=(const simd4_t<int,M>& v) {
+         return operator*=(v.v4());
+    }
+    inline simd4_t<int,N>& operator*=(const int32x4_t& v) {
+        simd4 = vmulq_s32(simd4, v);
+        return *this;
+    }
+
+    inline simd4_t<int,N>& operator/=(int s) {
+        return operator/=(simd4_t<int,4>(s));
+    }
+    template<int M>
+    inline simd4_t<int,N>& operator/=(const simd4_t<int,M>& v) {
+        for (int i=0; i<N; ++i) {
+           vec[i] /= v[i];
+        }
+        return *this;
+    }
+};
+
+static const int32x4_t imask2 = vld1q_s32((int32_t*)m2a32);
+static const int32x4_t imask3 = vld1q_s32((int32_t*)m3a32);
+
+template<>
+inline simd4_t<int,4>::simd4_t(const __vec4i_t v) {
+    simd4 = vld1q_s32(v);
+}
+template<>
+inline simd4_t<int,3>::simd4_t(const __vec4i_t v) {
+    simd4 = vandq_s32(vld1q_s32(v), imask3);
+}
+template<>
+inline simd4_t<int,2>::simd4_t(const __vec4i_t v) {
+    simd4 = vandq_s32(vld1q_s32(v), imask2);
+}
+template<>
+inline simd4_t<int,4>::simd4_t(int i) {
+    simd4 = vdupq_n_s32(i);
+}
+template<>
+inline simd4_t<int,3>::simd4_t(int i) {
+    simd4 = vandq_s32(vdupq_n_s32(i), imask3);
+}
+template<>
+inline simd4_t<int,2>::simd4_t(int i) {
+    simd4 = vandq_s32(vdupq_n_s32(i), imask2);
+}
+
+
+namespace simd4
+{
+
+template<int N>
+inline simd4_t<int,N> min(simd4_t<int,N> v1, const simd4_t<int,N>& v2) {
+    v1 = vminq_s32(v1.v4(), v2.v4());
+    return v1;
+}
+
+template<int N>
+inline simd4_t<int,N> max(simd4_t<int,N> v1, const simd4_t<int,N>& v2) {
+    v1 = vmaxq_s32(v1.v4(), v2.v4());
+    return v1;
+}
+
+} /* namespace simd4 */
+
+# endif
+
+#endif /* __SIMD_NEON_H__ */
+

simgear/math/test_sgvec4.cxx

@@ -0,0 +1,127 @@
+
+#include <stdio.h>
+#include <cmath>
+#include <cfloat>
+
+#include "SGMathFwd.hxx"
+#include "SGVec2.hxx"
+#include "SGVec3.hxx"
+#include "SGVec4.hxx"
+
+// set to 0 for a timing test
+#define TESTV_ACCURACY	1
+
+#define N               4
+#define T               double
+
+#if TESTV_ACCURACY
+# define TESTF(a, b) \
+ if ( std::abs(a - b) > T(1e-7) ) \
+   printf("line: %i, diff: %5.4e\n", __LINE__, double(std::abs(a - b)));
+# define TESTV(a, p,q,r,s) \
+ if (   std::abs(a[0] - (p)) > T(1e-7) \
+     || std::abs(a[1] - (q)) > T(1e-7) \
+     || (N > 2 && std::abs(a[2] - (r)) > T(1e-7)) \
+     || (N > 3 && std::abs(a[3] - (s)) > T(1e-7)) \
+    ) \
+  printf("line: %i, diff: %5.4e, %5.4e, %5.4e, %5.4e\n", __LINE__, double(std::abs(a[0]-(p))), double(std::abs(a[1]-(q))), double(std::abs(a[2]-(r))), double(std::abs(a[3]-(s))));
+# define MAX     1
+
+#else
+# define TESTF(a, b)
+# define TESTV(a, p,q,r,s)
+# define MAX     1000000
+#endif
+
+#define _VEC(NSTR)	SGVec ## NSTR
+#define VEC(N)		_VEC(N)
+
+int main()
+{
+  T init[4] = { T(1.31), T(3.43), T(5.69), T(1.0) };
+  T p[4] = { T(1.03), T(3.55), T(2.707), T(-4.01) };
+  float res = 0;
+  long int i;
+  VEC(N)<T> q;
+
+  for (int i=0; i<N; i++) {
+      q[i] = init[i];
+  }
+
+  simd4_t<T,N> qq, rr(T(-2.31), T(3.43), T(-4.69), T(-1.0));
+  TESTV(rr, T(-2.31), T(3.43), T(-4.69), T(-1.0));
+
+  qq = simd4::min(rr, simd4_t<T,N>(T(0)));
+  TESTV(qq, T(-2.31), 0, T(-4.69), T(-1.00));
+
+  qq = simd4::max(rr, simd4_t<T,N>(0.0));
+  TESTV(qq, 0, T(3.43), 0, 0);
+
+  qq = simd4::abs(rr);
+  TESTV(qq, T(2.31), T(3.43), T(4.69), T(1.00));
+
+  for (i=0; i<MAX; i++)
+  {
+    VEC(N)<T> v(p);
+    VEC(N)<T> x(v), y(v);
+    T f, g;
+
+    TESTV(x, p[0], p[1], p[2], p[3]);
+    TESTV(y, p[0], p[1], p[2], p[3]);
+ 
+    x += q;
+    TESTV(x, p[0]+q[0], p[1]+q[1], p[2]+q[2], p[3]+q[3]);
+
+    y -= q;
+    TESTV(y, p[0]-q[0], p[1]-q[1], p[2]-q[2], p[3]-q[3]);
+
+    v = x; x *= T(1.7);
+    TESTV(x, v[0]*T(1.7), v[1]*T(1.7), v[2]*T(1.7), v[3]*T(1.7));
+
+    v = y; y /= T(-1.3);
+    TESTV(y, v[0]/T(-1.3), v[1]/T(-1.3), v[2]/T(-1.3), v[3]/T(-1.3));
+
+    v = +x;
+    TESTV(v, x[0], x[1], x[2], x[3]);
+
+    v = -x;
+    TESTV(v, -x[0], -x[1], -x[2], -x[3]);
+
+    v = y+x;
+    TESTV(v, y[0]+x[0], y[1]+x[1], y[2]+x[2], y[3]+x[3]);
+
+    y = v*T(1.7);
+    TESTV(y, v[0]*T(1.7), v[1]*T(1.7), v[2]*T(1.7), v[3]*T(1.7));
+
+    y = T(1.7)*v;
+    TESTV(y, v[0]*T(1.7), v[1]*T(1.7), v[2]*T(1.7), v[3]*T(1.7));
+
+    v = y-x;
+    TESTV(v, y[0]-x[0], y[1]-x[1], y[2]-x[2], y[3]-x[3]);
+
+    f = norm(v); g = 0;
+    for (int i=0; i<N; i++) g += v[i]*v[i];
+    g = std::sqrt(g);
+    TESTF(f, g);
+
+    x = v; v -= y;
+    VEC(N)<T> t = x - y;
+    f = norm(v); g = 0;
+    for (int i=0; i<N; i++) g += t[i]*t[i];
+    g = std::sqrt(g);
+    TESTF(f, g);
+
+    f += dot(x, v); // g = 0;
+    for (int i=0; i<N; i++) g += x[i]*v[i];
+    TESTF(f, g);
+
+    f += dot(v, v); // g = 0;
+    for (int i=0; i<N; i++) g += v[i]*v[i];
+    TESTF(f, g);
+
+    res += f;
+  }
+
+  printf("res: %f\n", res);
+  return 0;
+}

simgear/misc/CMakeLists.txt

@@ -12,14 +12,11 @@ set(HEADERS
     sg_dir.hxx
     sg_hash.hxx
     sg_path.hxx
-    sgstream.hxx
     stdint.hxx
     stopwatch.hxx
     strutils.hxx
     tabbed_values.hxx
     texcoord.hxx
-    zfstream.hxx
-    gzcontainerfile.hxx
     )
 
 set(SOURCES
@@ -31,12 +28,9 @@ set(SOURCES
     sg_dir.cxx
     sg_path.cxx
     sg_hash.cxx
-    sgstream.cxx
     strutils.cxx
     tabbed_values.cxx
     texcoord.cxx
-    zfstream.cxx
-    gzcontainerfile.cxx
     )
 
 if (WINDOWS)
@@ -59,14 +53,18 @@ add_executable(test_tabbed_values tabbed_values_test.cxx)
 add_test(tabbed_values ${EXECUTABLE_OUTPUT_PATH}/test_tabbed_values)
 target_link_libraries(test_tabbed_values ${TEST_LIBS})
 
-add_executable(test_streams sgstream_test.cxx )
-add_test(streams ${EXECUTABLE_OUTPUT_PATH}/test_streams)
-target_link_libraries(test_streams ${TEST_LIBS})
+add_executable(test_strutils strutils_test.cxx)
+target_link_libraries(test_strutils ${TEST_LIBS})
+add_test(strutils ${EXECUTABLE_OUTPUT_PATH}/test_strutils)
 
 add_executable(test_path path_test.cxx )
 add_test(path ${EXECUTABLE_OUTPUT_PATH}/test_path)
 target_link_libraries(test_path ${TEST_LIBS})
 
+add_executable(test_sg_dir sg_dir_test.cxx)
+target_link_libraries(test_sg_dir ${TEST_LIBS})
+add_test(sg_dir ${EXECUTABLE_OUTPUT_PATH}/test_sg_dir)
+
 endif(ENABLE_TESTS)
 
 add_boost_test(SimpleMarkdown
@@ -79,11 +77,6 @@ add_boost_test(SVGpreserveAspectRatio
   LIBRARIES ${TEST_LIBS}
 )
 
-add_boost_test(strutils
-  SOURCES strutils_test.cxx
-  LIBRARIES ${TEST_LIBS}
-)
-
 add_boost_test(utf8tolatin1
   SOURCES utf8tolatin1_test.cxx
   LIBRARIES ${TEST_LIBS}

simgear/misc/CSSBorder_test.cxx

@@ -4,30 +4,18 @@
 
 #include <cmath>
 #include <iostream>
+#include <simgear/misc/test_macros.hxx>
 
-#define COMPARE(a, b) \
-  if( std::fabs((a) - (b)) > 1e-4 ) \
-  { \
-    std::cerr << "line " << __LINE__ << ": failed: "\
-              << #a << " != " << #b << " d = " << ((a) - (b)) << std::endl; \
-    return 1; \
-  }
+#define COMPARE(a, b) SG_CHECK_EQUAL_EP2((a), (b), 1e-4)
 
-#define VERIFY(a) \
-  if( !(a) ) \
-  { \
-    std::cerr << "line " << __LINE__ << ": failed: "\
-              << #a << std::endl; \
-    return 1; \
-  }
 
 using namespace simgear;
 
 int main (int ac, char ** av)
 {
   CSSBorder b = CSSBorder::parse("5");
-  VERIFY(b.isValid());
-  VERIFY(!b.isNone());
+  SG_VERIFY(b.isValid());
+  SG_VERIFY(!b.isNone());
   CSSBorder::Offsets o = b.getAbsOffsets(SGRect<int>());
   COMPARE(o.t, 5);
   COMPARE(o.r, 5);
@@ -81,8 +69,8 @@ int main (int ac, char ** av)
   COMPARE(o.r, 0);
   COMPARE(o.b, 0);
   COMPARE(o.l, 0);
-  VERIFY(b.getKeyword().empty());
-  VERIFY(b.isNone());
+  SG_VERIFY(b.getKeyword().empty());
+  SG_VERIFY(b.isNone());
 
   b = CSSBorder::parse("none");
   o = b.getRelOffsets(SGRect<int>(0,0,200,200));
@@ -90,11 +78,11 @@ int main (int ac, char ** av)
   COMPARE(o.r, 0);
   COMPARE(o.b, 0);
   COMPARE(o.l, 0);
-  VERIFY(b.getKeyword().empty());
-  VERIFY(b.isNone());
+  SG_VERIFY(b.getKeyword().empty());
+  SG_VERIFY(b.isNone());
 
   CSSBorder b2;
-  VERIFY(!b2.isValid());
+  SG_VERIFY(!b2.isValid());
   o = b.getAbsOffsets(SGRect<int>(0,0,200,200));
   COMPARE(o.t, 0);
   COMPARE(o.r, 0);

simgear/misc/path_test.cxx

@@ -12,19 +12,26 @@ using std::endl;
 #include <simgear/misc/test_macros.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/misc/sg_dir.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/debug/logstream.hxx>
+
+#if defined(SG_WINDOWS)
+	#include <io.h> // for _wchmod
+#else
+    #include <sys/stat.h> // for chmod
+#endif
 
 void test_dir()
 {
     simgear::Dir temp = simgear::Dir::tempDir("foo");
     cout << "created:" << temp.path() << endl;
   
-    VERIFY(temp.exists());
-    VERIFY(temp.path().isDir());
-    VERIFY(!temp.path().isFile());
+    SG_VERIFY(temp.exists());
+    SG_VERIFY(temp.path().isDir());
+    SG_VERIFY(!temp.path().isFile());
     
     SGPath fileInDir = temp.file("foobaz");
-    VERIFY(!fileInDir.exists());
+    SG_VERIFY(!fileInDir.exists());
     
     if (!temp.remove(true)) {
         cout << "remove failed!" << endl;
@@ -40,11 +47,57 @@ void test_dir()
               << "\n - Pictures:  " << SGPath::standardLocation(SGPath::PICTURES)
               << std::endl;
 
-    VERIFY( !SGPath::standardLocation(SGPath::HOME     ).isNull() );
-    VERIFY( !SGPath::standardLocation(SGPath::DESKTOP  ).isNull() );
-    VERIFY( !SGPath::standardLocation(SGPath::DOWNLOADS).isNull() );
-    VERIFY( !SGPath::standardLocation(SGPath::DOCUMENTS).isNull() );
-    VERIFY( !SGPath::standardLocation(SGPath::PICTURES ).isNull() );
+    SG_VERIFY( !SGPath::standardLocation(SGPath::HOME     ).isNull() );
+    SG_VERIFY( !SGPath::standardLocation(SGPath::DESKTOP  ).isNull() );
+    SG_VERIFY( !SGPath::standardLocation(SGPath::DOWNLOADS).isNull() );
+    SG_VERIFY( !SGPath::standardLocation(SGPath::DOCUMENTS).isNull() );
+    SG_VERIFY( !SGPath::standardLocation(SGPath::PICTURES ).isNull() );
+}
+
+// exercise the remove + rename that occurs when upgrading an
+// aircraft package
+void test_update_dir()
+{
+	SGPath p(simgear::Dir::current().path());
+	p.append("test_update_dir");
+	simgear::Dir pd(p);
+	pd.removeChildren();
+
+	{
+		SGPath existingFile = p / "Cessna172P" / "somefile.txt";
+		existingFile.create_dir(0755);
+
+		sg_ofstream of(existingFile, std::ios::out);
+		of << "Foobar";
+		of.close();
+
+		SG_VERIFY(existingFile.exists());
+	}
+
+	{
+		SGPath replacementFile = p / "NewDir" / "someotherfile.txt";
+		replacementFile.create_dir(0755);
+
+		sg_ofstream of(replacementFile, std::ios::out);
+		of << "Foobar";
+		of.close();
+
+		SG_VERIFY(replacementFile.exists());
+	}
+
+	{
+		simgear::Dir od(p / "Cessna172P");
+		SG_VERIFY(od.remove(true));
+	}
+
+	SGPath replacementDir = p / "NewDir";
+	SG_VERIFY(replacementDir.rename(p / "Cessna172P"));
+
+	SG_VERIFY((p / "Cessna172P" / "someotherfile.txt").exists());
+	SG_VERIFY(!(p / "Cessna172P" / "somefile.txt").exists());
+	SG_VERIFY(!(p / "NewDir").exists());
+
+	SG_LOG(SG_GENERAL, SG_INFO, "passed update test");
 }
 
 SGPath::Permissions validateNone(const SGPath&)
@@ -77,181 +130,271 @@ void test_path_dir()
 	temp.remove(true);
     SGPath p = temp.path();
 
-	VERIFY(p.isAbsolute());
-	COMPARE(p.create_dir(0755), 0);
+	SG_VERIFY(p.isAbsolute());
+	SG_CHECK_EQUAL(p.create_dir(0755), 0);
 
 	SGPath sub = p / "subA" / "subB";
-	VERIFY(!sub.exists());
+	SG_VERIFY(!sub.exists());
 
 	SGPath subFile = sub / "fileABC.txt";
-	COMPARE(subFile.create_dir(0755), 0);
-	VERIFY(!subFile.exists());
+	SG_CHECK_EQUAL(subFile.create_dir(0755), 0);
+	SG_VERIFY(!subFile.exists());
 
 	sub.set_cached(false);
-	VERIFY(sub.exists());
-	VERIFY(sub.isDir());
+	SG_VERIFY(sub.exists());
+	SG_VERIFY(sub.isDir());
 
 	SGPath sub2 = p / "subA" / "fileA";
 	{
 		sg_ofstream os(sub2);
-        VERIFY(os.is_open());
+        SG_VERIFY(os.is_open());
 		for (int i = 0; i < 50; ++i) {
 			os << "ABCD" << endl;
 		}
 	}
-	VERIFY(sub2.isFile());
-	COMPARE(sub2.sizeInBytes(), 250);
+	SG_VERIFY(sub2.isFile());
+	SG_CHECK_EQUAL(sub2.sizeInBytes(), 250);
 
     SGPath sub3 = p / "subß" / "file𝕽";
     sub3.create_dir(0755);
 
     {
         sg_ofstream os(sub3);
-        VERIFY(os.is_open());
+        SG_VERIFY(os.is_open());
         for (int i = 0; i < 20; ++i) {
             os << "EFGH" << endl;
         }
     }
 
     sub3.set_cached(false);
-    VERIFY(sub3.exists());
-    COMPARE(sub3.sizeInBytes(), 100);
-    COMPARE(sub3.file(), "file𝕽");
+    SG_VERIFY(sub3.exists());
+    SG_CHECK_EQUAL(sub3.sizeInBytes(), 100);
+    SG_CHECK_EQUAL(sub3.file(), "file𝕽");
 
 	simgear::Dir subD(p / "subA");
 	simgear::PathList dirChildren = subD.children(simgear::Dir::TYPE_DIR | simgear::Dir::NO_DOT_OR_DOTDOT);
-	COMPARE(dirChildren.size(), 1);
-	COMPARE(dirChildren[0], subD.path() / "subB");
+	SG_CHECK_EQUAL(dirChildren.size(), 1);
+	SG_CHECK_EQUAL(dirChildren[0], subD.path() / "subB");
 
 	simgear::PathList fileChildren = subD.children(simgear::Dir::TYPE_FILE | simgear::Dir::NO_DOT_OR_DOTDOT);
-	COMPARE(fileChildren.size(), 1);
-	COMPARE(fileChildren[0], subD.path() / "fileA");
+	SG_CHECK_EQUAL(fileChildren.size(), 1);
+	SG_CHECK_EQUAL(fileChildren[0], subD.path() / "fileA");
 
     simgear::Dir subS(sub3.dirPath());
     fileChildren = subS.children(simgear::Dir::TYPE_FILE | simgear::Dir::NO_DOT_OR_DOTDOT);
-    COMPARE(fileChildren.size(), 1);
-    COMPARE(fileChildren[0], subS.path() / "file𝕽");
+    SG_CHECK_EQUAL(fileChildren.size(), 1);
+    SG_CHECK_EQUAL(fileChildren[0], subS.path() / "file𝕽");
 
 }
 
+void test_permissions()
+{
+    // start with an empty dir
+    SGPath p = simgear::Dir::current().path() / "path_test_permissions";
+    simgear::Dir pd(p);
+    if (pd.exists()) {
+        pd.removeChildren();
+    } else {
+        pd.create(0700);
+    }
+    
+	// windows doesn't seem to actualy create a read-only directory, so this
+	// test fails in strange ways there.
+#if !defined(SG_WINDOWS)
+    SGPath fileInRO = p / "read-only" / "fileA";
+    SG_CHECK_EQUAL(fileInRO.create_dir(0500), 0);
+
+    SG_VERIFY(!fileInRO.exists());
+    SG_VERIFY(!fileInRO.canWrite());
+
+    fileInRO.setPermissionChecker(&validateRead);
+    SG_CHECK_EQUAL(fileInRO.canRead(), false);
+    SG_CHECK_EQUAL(fileInRO.canWrite(), false);
+
+    fileInRO.setPermissionChecker(&validateWrite);
+    SG_CHECK_EQUAL(fileInRO.canRead(), false);
+    SG_CHECK_EQUAL(fileInRO.canWrite(), false);
+#endif
+
+    /////////
+    SGPath fileInRW = p / "read-write" / "fileA";
+
+    fileInRW.setPermissionChecker(&validateRead);
+    SG_CHECK_EQUAL(fileInRW.canRead(), false);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+    SG_CHECK_EQUAL(fileInRW.create_dir(0700), -3); // not permitted
+
+    fileInRW.setPermissionChecker(nullptr);
+    SG_CHECK_EQUAL(fileInRW.create_dir(0700), 0);
+
+    SG_VERIFY(!fileInRW.exists());
+    SG_VERIFY(fileInRW.canWrite());
+
+    fileInRW.setPermissionChecker(&validateRead);
+    SG_CHECK_EQUAL(fileInRW.canRead(), false);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+
+    fileInRW.setPermissionChecker(&validateWrite);
+    SG_CHECK_EQUAL(fileInRW.canRead(), false);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), true);
+
+
+    // create the file
+    {
+        sg_ofstream os(fileInRW);
+        SG_VERIFY(os.is_open());
+        os << "nonense" << endl;
+    }
+
+    // should now be readable + writeable
+    fileInRW.set_cached(false);
+    fileInRW.setPermissionChecker(nullptr);
+    SG_VERIFY(fileInRW.exists());
+    SG_VERIFY(fileInRW.canWrite());
+    SG_VERIFY(fileInRW.canRead());
+
+    fileInRW.setPermissionChecker(&validateRead);
+    SG_CHECK_EQUAL(fileInRW.canRead(), true);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+
+    fileInRW.setPermissionChecker(&validateWrite);
+    SG_CHECK_EQUAL(fileInRW.canRead(), false);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), true);
+
+    // mark the file as read-only
+#if defined(SG_WINDOWS)
+	std::wstring wp = fileInRW.wstr();
+	_wchmod(wp.c_str(), _S_IREAD);
+#else
+    ::chmod(fileInRW.c_str(), 0400);
+#endif
+
+    fileInRW.set_cached(false);
+    fileInRW.setPermissionChecker(nullptr);
+
+    SG_VERIFY(fileInRW.exists());
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+    SG_VERIFY(fileInRW.canRead());
+
+    fileInRW.setPermissionChecker(&validateRead);
+    SG_CHECK_EQUAL(fileInRW.canRead(), true);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+
+    fileInRW.setPermissionChecker(&validateWrite);
+    SG_CHECK_EQUAL(fileInRW.canRead(), false);
+    SG_CHECK_EQUAL(fileInRW.canWrite(), false);
+}
+
 int main(int argc, char* argv[])
 {
     SGPath pa;
-    VERIFY(pa.isNull());
-    COMPARE(pa.exists(), false);
+    SG_VERIFY(pa.isNull());
+    SG_CHECK_EQUAL(pa.exists(), false);
     
 // test basic parsing
     SGPath pb("/Foo/bar/something.png");
-    COMPARE(pb.utf8Str(), std::string("/Foo/bar/something.png"));
-    COMPARE(pb.local8BitStr(), std::string("/Foo/bar/something.png"));
-    COMPARE(pb.dir(), std::string("/Foo/bar"));
-    COMPARE(pb.file(), std::string("something.png"));
-    COMPARE(pb.base(), std::string("/Foo/bar/something"));
-    COMPARE(pb.file_base(), std::string("something"));
-    COMPARE(pb.extension(), std::string("png"));
-    VERIFY(pb.isAbsolute());
-    VERIFY(!pb.isRelative());
+    SG_CHECK_EQUAL(pb.utf8Str(), std::string("/Foo/bar/something.png"));
+    SG_CHECK_EQUAL(pb.local8BitStr(), std::string("/Foo/bar/something.png"));
+    SG_CHECK_EQUAL(pb.dir(), std::string("/Foo/bar"));
+    SG_CHECK_EQUAL(pb.file(), std::string("something.png"));
+    SG_CHECK_EQUAL(pb.base(), std::string("/Foo/bar/something"));
+    SG_CHECK_EQUAL(pb.file_base(), std::string("something"));
+    SG_CHECK_EQUAL(pb.extension(), std::string("png"));
+    SG_VERIFY(pb.isAbsolute());
+    SG_VERIFY(!pb.isRelative());
     
 // relative paths
     SGPath ra("where/to/begin.txt");
-    COMPARE(ra.utf8Str(), std::string("where/to/begin.txt"));
-    COMPARE(ra.local8BitStr(), std::string("where/to/begin.txt"));
-    COMPARE(ra.dir(), std::string("where/to"));
-    COMPARE(ra.file(), std::string("begin.txt"));
-    COMPARE(ra.file_base(), std::string("begin"));
-    VERIFY(!ra.isAbsolute());
-    VERIFY(ra.isRelative());
+    SG_CHECK_EQUAL(ra.utf8Str(), std::string("where/to/begin.txt"));
+    SG_CHECK_EQUAL(ra.local8BitStr(), std::string("where/to/begin.txt"));
+    SG_CHECK_EQUAL(ra.dir(), std::string("where/to"));
+    SG_CHECK_EQUAL(ra.file(), std::string("begin.txt"));
+    SG_CHECK_EQUAL(ra.file_base(), std::string("begin"));
+    SG_VERIFY(!ra.isAbsolute());
+    SG_VERIFY(ra.isRelative());
     
 // dots in paths / missing extensions
     SGPath pk("/Foo/bar.dot/thing");
-    COMPARE(pk.dir(), std::string("/Foo/bar.dot"));
-    COMPARE(pk.file(), std::string("thing"));
-    COMPARE(pk.base(), std::string("/Foo/bar.dot/thing"));
-    COMPARE(pk.file_base(), std::string("thing"));
-    COMPARE(pk.extension(), std::string());
+    SG_CHECK_EQUAL(pk.dir(), std::string("/Foo/bar.dot"));
+    SG_CHECK_EQUAL(pk.file(), std::string("thing"));
+    SG_CHECK_EQUAL(pk.base(), std::string("/Foo/bar.dot/thing"));
+    SG_CHECK_EQUAL(pk.file_base(), std::string("thing"));
+    SG_CHECK_EQUAL(pk.extension(), std::string());
     
 // multiple file extensions
     SGPath pj("/Foo/zot.dot/thing.tar.gz");
-    COMPARE(pj.dir(), std::string("/Foo/zot.dot"));
-    COMPARE(pj.file(), std::string("thing.tar.gz"));
-    COMPARE(pj.base(), std::string("/Foo/zot.dot/thing.tar"));
-    COMPARE(pj.file_base(), std::string("thing"));
-    COMPARE(pj.extension(), std::string("gz"));
-    COMPARE(pj.complete_lower_extension(), std::string("tar.gz"));
+    SG_CHECK_EQUAL(pj.dir(), std::string("/Foo/zot.dot"));
+    SG_CHECK_EQUAL(pj.file(), std::string("thing.tar.gz"));
+    SG_CHECK_EQUAL(pj.base(), std::string("/Foo/zot.dot/thing.tar"));
+    SG_CHECK_EQUAL(pj.file_base(), std::string("thing"));
+    SG_CHECK_EQUAL(pj.extension(), std::string("gz"));
+    SG_CHECK_EQUAL(pj.complete_lower_extension(), std::string("tar.gz"));
     
 // path fixing
     SGPath rd("where\\to\\begin.txt");
-    COMPARE(rd.utf8Str(), std::string("where/to/begin.txt"));
+    SG_CHECK_EQUAL(rd.utf8Str(), std::string("where/to/begin.txt"));
     
 // test modification
 // append
     SGPath d1("/usr/local");
     SGPath pc = d1;
-    COMPARE(pc.utf8Str(), std::string("/usr/local"));
+    SG_CHECK_EQUAL(pc.utf8Str(), std::string("/usr/local"));
     pc.append("include");
     
-    COMPARE(pc.utf8Str(), std::string("/usr/local/include"));
-    COMPARE(pc.file(), std::string("include"));
+    SG_CHECK_EQUAL(pc.utf8Str(), std::string("/usr/local/include"));
+    SG_CHECK_EQUAL(pc.file(), std::string("include"));
 
 // concat
     SGPath pd = pb;
     pd.concat("-1");
-    COMPARE(pd.utf8Str(), std::string("/Foo/bar/something.png-1"));
+    SG_CHECK_EQUAL(pd.utf8Str(), std::string("/Foo/bar/something.png-1"));
     
 // create with relative path
     SGPath rb(d1, "include/foo");
-    COMPARE(rb.utf8Str(), std::string("/usr/local/include/foo"));
-    VERIFY(rb.isAbsolute());
+    SG_CHECK_EQUAL(rb.utf8Str(), std::string("/usr/local/include/foo"));
+    SG_VERIFY(rb.isAbsolute());
     
 // lower-casing of file extensions
     SGPath extA("FOO.ZIP");
-    COMPARE(extA.base(), "FOO");
-    COMPARE(extA.extension(), "ZIP");
-    COMPARE(extA.lower_extension(), "zip");
-    COMPARE(extA.complete_lower_extension(), "zip");
+    SG_CHECK_EQUAL(extA.base(), "FOO");
+    SG_CHECK_EQUAL(extA.extension(), "ZIP");
+    SG_CHECK_EQUAL(extA.lower_extension(), "zip");
+    SG_CHECK_EQUAL(extA.complete_lower_extension(), "zip");
     
     SGPath extB("BAH/FOO.HTML.GZ");
-    COMPARE(extB.extension(), "GZ");
-    COMPARE(extB.base(), "BAH/FOO.HTML");
-    COMPARE(extB.lower_extension(), "gz");
-    COMPARE(extB.complete_lower_extension(), "html.gz");
+    SG_CHECK_EQUAL(extB.extension(), "GZ");
+    SG_CHECK_EQUAL(extB.base(), "BAH/FOO.HTML");
+    SG_CHECK_EQUAL(extB.lower_extension(), "gz");
+    SG_CHECK_EQUAL(extB.complete_lower_extension(), "html.gz");
 #ifdef _WIN32
     SGPath winAbs("C:\\Windows\\System32");
-    COMPARE(winAbs.local8BitStr(), std::string("C:/Windows/System32"));
+    SG_CHECK_EQUAL(winAbs.local8BitStr(), std::string("C:/Windows/System32"));
 
 #endif
   
 // paths with only the file components
     SGPath pf("something.txt.gz");
-    COMPARE(pf.base(), "something.txt");
-    COMPARE(pf.file(), "something.txt.gz");
-    COMPARE(pf.dir(), "");
-    COMPARE(pf.lower_extension(), "gz");
-    COMPARE(pf.complete_lower_extension(), "txt.gz");
+    SG_CHECK_EQUAL(pf.base(), "something.txt");
+    SG_CHECK_EQUAL(pf.file(), "something.txt.gz");
+    SG_CHECK_EQUAL(pf.dir(), "");
+    SG_CHECK_EQUAL(pf.lower_extension(), "gz");
+    SG_CHECK_EQUAL(pf.complete_lower_extension(), "txt.gz");
 
-    COMPARE(pf.canRead(), true);
-    COMPARE(pf.canWrite(), true);
+    SG_CHECK_EQUAL(pf.canRead(), false);
+    SG_CHECK_EQUAL(pf.canWrite(), false);
 
     SGPath pp(&validateNone);
-    COMPARE(pp.canRead(), false);
-    COMPARE(pp.canWrite(), false);
-
-    pp.append("./test-dir/file.txt");
-    COMPARE(pp.create_dir(0700), -3);
-
-    pp.setPermissionChecker(&validateRead);
-    COMPARE(pp.canRead(), true);
-    COMPARE(pp.canWrite(), false);
-    COMPARE(pp.create_dir(0700), -3);
-
-    pp.setPermissionChecker(&validateWrite);
-    COMPARE(pp.canRead(), false);
-    COMPARE(pp.canWrite(), true);
+    SG_CHECK_EQUAL(pp.canRead(), false);
+    SG_CHECK_EQUAL(pp.canWrite(), false);
 
     test_dir();
     
 	test_path_dir();
 
+    test_permissions();
+
+	test_update_dir();
+
     cout << "all tests passed OK" << endl;
     return 0; // passed
 }

simgear/misc/sg_dir.cxx

@@ -37,7 +37,6 @@
 #  include <dirent.h>
 #  include <sys/stat.h>
 #  include <unistd.h>
-#  include <errno.h>
 #endif
 
 #include <simgear/misc/strutils.hxx>
@@ -46,6 +45,7 @@
 
 #include <cstring>
 #include <cstdlib>
+#include <cerrno>
 #include <iostream>
 #include <algorithm> // for std::sort
 
@@ -94,7 +94,7 @@ Dir Dir::current()
 #endif
     if (!buf) {
         if  (errno == 2) throw sg_exception("The current directory is invalid");
-        else throw sg_exception(strerror(errno));
+        else throw sg_exception(simgear::strutils::error_string(errno));
     }
 
     SGPath p(buf);
@@ -118,7 +118,8 @@ Dir Dir::tempDir(const std::string& templ)
     std::string s = p.local8BitStr();
     ::snprintf(buf, 1024, "%s", s.c_str());
     if (!mkdtemp(buf)) {
-        SG_LOG(SG_IO, SG_WARN, "mkdtemp failed:" << strerror(errno));
+        SG_LOG(SG_IO, SG_WARN,
+               "mkdtemp failed: " << simgear::strutils::error_string(errno));
         return Dir();
     }
     
@@ -135,6 +136,7 @@ Dir Dir::tempDir(const std::string& templ)
     Dir t(p);
     if (!t.create(0700)) {
         SG_LOG(SG_IO, SG_WARN, "failed to create temporary directory at " << p);
+        return Dir();
     }
     
     return t;
@@ -277,6 +279,11 @@ PathList Dir::children(int types, const std::string& nameFilter) const
   return result;
 }
 
+bool Dir::isNull() const
+{
+  return _path.isNull();
+}
+
 bool Dir::isEmpty() const
 {
 #if defined(SG_WINDOWS)
@@ -333,7 +340,9 @@ bool Dir::create(mode_t mode)
     int err = mkdir(ps.c_str(), mode);
 #endif
     if (err) {
-        SG_LOG(SG_IO, SG_WARN,  "directory creation failed: (" << _path << ") " << strerror(errno) );
+        SG_LOG(SG_IO, SG_WARN,
+               "directory creation failed for '" << _path.utf8Str() << "': " <<
+               simgear::strutils::error_string(errno));
     }
     
     return (err == 0);
@@ -341,6 +350,10 @@ bool Dir::create(mode_t mode)
 
 bool Dir::removeChildren() const
 {
+    if (!exists()) {
+        return true;
+    }
+
     bool ok;
     PathList cs = children(NO_DOT_OR_DOTDOT | INCLUDE_HIDDEN | TYPE_FILE | TYPE_DIR);
     BOOST_FOREACH(SGPath path, cs) {
@@ -382,7 +395,9 @@ bool Dir::remove(bool recursive)
     int err = rmdir(ps.c_str());
 #endif
     if (err) {
-        SG_LOG(SG_IO, SG_WARN, "rmdir failed:" << _path << ":" << strerror(errno));
+        SG_LOG(SG_IO, SG_WARN,
+               "rmdir failed for '" << _path.utf8Str() << "': " <<
+               simgear::strutils::error_string(errno));
     }
     return (err == 0);
 }

simgear/misc/sg_dir.hxx

@@ -55,7 +55,8 @@ namespace simgear
     static Dir current();
     
     /**
-     * create a temporary directory, using the supplied name
+     * Create a temporary directory, using the supplied name.
+     * The return value 'd' is such that d.isNull() in case this failed.
      */
     static Dir tempDir(const std::string& templ);
       
@@ -71,7 +72,14 @@ namespace simgear
     };
     
     PathList children(int types = 0, const std::string& nameGlob = "") const;
-    
+
+    /**
+     * Check if the underlying SGPath is null.
+     *
+     * Note: this is the case for a default-constructed Dir instance.
+     */
+    bool isNull() const;
+
     /**
      * test if the directory contains no children (except '.' and '..')
      */

simgear/misc/sg_dir_test.cxx

@@ -0,0 +1,42 @@
+#include <cstdlib>
+
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/misc/test_macros.hxx>
+#include "sg_dir.hxx"
+
+
+void test_isNull()
+{
+    SG_VERIFY(simgear::Dir().isNull());
+}
+
+void test_setRemoveOnDestroy()
+{
+    SGPath path;
+    {
+        simgear::Dir d = simgear::Dir::tempDir("FlightGear");
+        SG_VERIFY(!d.isNull() && d.exists() && d.isEmpty());
+        d.setRemoveOnDestroy();
+
+        path = d.path();        // keep a copy of the path
+        SG_VERIFY(path.exists() && path.isDir());
+    }
+
+    SG_VERIFY(!path.exists());
+}
+
+void test_tempDir()
+{
+    simgear::Dir d = simgear::Dir::tempDir("FlightGear");
+    SG_VERIFY(!d.isNull() && d.exists() && d.isEmpty());
+    d.remove();
+}
+
+int main(int argc, char **argv)
+{
+    test_isNull();
+    test_setRemoveOnDestroy();
+    test_tempDir();
+
+    return EXIT_SUCCESS;
+}

simgear/misc/sg_path.cxx

@@ -27,7 +27,7 @@
 #include <simgear_config.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/strutils.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 #include <stdio.h>
 #include <sys/stat.h>
@@ -460,10 +460,11 @@ void SGPath::validate() const
 
   if (path.empty()) {
 	  _exists = false;
+      _canWrite = _canRead = false;
 	  return;
   }
 
-#ifdef _WIN32
+#if defined(SG_WINDOWS)
   struct _stat buf ;
   bool remove_trailing = false;
   std::wstring statPath(wstr());
@@ -473,12 +474,24 @@ void SGPath::validate() const
 
   if (_wstat(statPath.c_str(), &buf ) < 0) {
     _exists = false;
+    _canRead = false;
+
+      // check parent directory for write-ability
+      std::wstring parentPath = simgear::strutils::convertUtf8ToWString(dir());
+      struct _stat parentBuf;
+      if (_wstat(parentPath.c_str(), &parentBuf) >= 0) {
+          _canWrite = parentBuf.st_mode & _S_IWRITE;
+      } else {
+          _canWrite = false;
+      }
   } else {
     _exists = true;
     _isFile = ((S_IFREG & buf.st_mode ) !=0);
     _isDir = ((S_IFDIR & buf.st_mode ) !=0);
     _modTime = buf.st_mtime;
     _size = buf.st_size;
+	_canRead = _S_IREAD & buf.st_mode;
+	_canWrite = _S_IWRITE & buf.st_mode;
   }
 
 #else
@@ -486,15 +499,35 @@ void SGPath::validate() const
 
   if (stat(path.c_str(), &buf ) < 0) {
     _exists = false;
+    _canRead = false;
+
+      // check parent directory for write-ability
+      std::string parentPath = dir();
+      struct stat parentBuf;
+      if (stat(parentPath.c_str(), &parentBuf) >= 0) {
+          _canWrite = parentBuf.st_mode & S_IWUSR;
+      } else {
+          _canWrite = false;
+      }
   } else {
     _exists = true;
     _isFile = ((S_ISREG(buf.st_mode )) != 0);
     _isDir = ((S_ISDIR(buf.st_mode )) != 0);
     _modTime = buf.st_mtime;
     _size = buf.st_size;
+    _canRead = S_IRUSR & buf.st_mode;
+    _canWrite = S_IWUSR & buf.st_mode;
   }
 
 #endif
+    // ensure permissions are no less restrictive than what the
+    // permissions checker offers
+    if ( _permission_checker ) {
+        Permissions p = _permission_checker(*this);
+        _canRead &= p.read;
+        _canWrite &= p.write;
+    }
+
   _cached = true;
 }
 
@@ -504,18 +537,7 @@ void SGPath::checkAccess() const
   if( _rwCached && _cacheEnabled )
     return;
 
-  if( _permission_checker )
-  {
-    Permissions p = _permission_checker(*this);
-    _canRead = p.read;
-    _canWrite = p.write;
-  }
-  else
-  {
-    _canRead = true;
-    _canWrite = true;
-  }
-
+    validate();
   _rwCached = true;
 }
 
@@ -555,7 +577,7 @@ bool SGPath::isFile() const
 
 int SGPath::create_dir(mode_t mode)
 {
-  if( !canWrite() )
+  if ( !permissionsAllowsWrite() )
   {
     SG_LOG( SG_IO,
             SG_WARN, "Error creating directory for '" << *this << "'"
@@ -703,7 +725,7 @@ std::string SGPath::str_native() const
 //------------------------------------------------------------------------------
 bool SGPath::remove()
 {
-  if( !canWrite() )
+  if( !permissionsAllowsWrite() )
   {
     SG_LOG( SG_IO, SG_WARN, "file remove failed: (" << *this << ")"
                                                " reason: access denied" );
@@ -712,7 +734,15 @@ bool SGPath::remove()
 
 #if defined(SG_WINDOWS)
   std::wstring ps = wstr();
-  int err = _wunlink(ps.c_str());
+
+  // windows forbids removing a read-only file, let's try to deal
+  // with that case
+  int err = _wchmod(ps.c_str(), _S_IWRITE | _S_IREAD);
+  if (err != 0) {
+	  SG_LOG(SG_IO, SG_WARN, "failed to make file writeable prior to remove:" << *this);
+  } else {
+	  err = _wunlink(ps.c_str());
+  }
 #else
   std::string ps = local8BitStr();
   int err = ::unlink(ps.c_str());
@@ -1018,3 +1048,10 @@ std::wstring SGPath::wstr() const
 {
 	return simgear::strutils::convertUtf8ToWString(path);
 }
+
+//------------------------------------------------------------------------------
+bool SGPath::permissionsAllowsWrite() const
+{
+    return _permission_checker ? _permission_checker(*this).write : true;
+}
+

simgear/misc/sg_path.hxx

@@ -335,6 +335,8 @@ private:
     void validate() const;
     void checkAccess() const;
 
+    bool permissionsAllowsWrite() const;
+
     std::string path;
     PermissionChecker _permission_checker;
 

simgear/misc/strutils.cxx

@@ -175,6 +175,33 @@ namespace simgear {
 	    return result;
 	}
 
+
+        string_list split_on_any_of(const std::string& str, const char* seperators)
+        {
+            if (seperators == nullptr || (strlen(seperators) == 0)) {
+                throw sg_exception("illegal/missing seperator string");
+            }
+
+            string_list result;
+            size_t pos = 0;
+            size_t startPos = str.find_first_not_of(seperators, 0);
+            for(;;)
+            {
+                pos = str.find_first_of(seperators, startPos);
+                if (pos == string::npos) {
+                    result.push_back(str.substr(startPos));
+                    break;
+                }
+                result.push_back(str.substr(startPos, pos - startPos));
+                startPos = str.find_first_not_of(seperators, pos);
+                if (startPos == string::npos) {
+                    break;
+                }
+            }
+            return result;
+
+        }
+
 	/**
 	 * The lstrip(), rstrip() and strip() functions are implemented
 	 * in do_strip() which uses an additional parameter to indicate what
@@ -238,6 +265,35 @@ namespace simgear {
 	    return do_strip( s, BOTHSTRIP );
 	}
 
+        void
+        stripTrailingNewlines_inplace(string& s)
+        {
+          // The following (harder to read) implementation is much slower on
+          // my system (g++ 6.2.1 on Debian): 11.4 vs. 3.9 seconds on
+          // 50,000,000 iterations performed on a short CRLF-terminated
+          // string---and it is even a bit slower (12.9 seconds) with
+          // std::next(it) instead of (it+1).
+          //
+          // for (string::reverse_iterator it = s.rbegin();
+          //      it != s.rend() && (*it == '\r' || *it == '\n'); /* empty */) {
+          //   it = string::reverse_iterator(s.erase( (it+1).base() ));
+          // }
+
+          // Simple and fast
+          while (!s.empty() && (s.back() == '\r' || s.back() == '\n')) {
+            s.pop_back();
+          }
+        }
+
+        string
+        stripTrailingNewlines(const string& s)
+        {
+          string res = s;
+          stripTrailingNewlines_inplace(res);
+
+          return res;
+        }
+
 	string
 	rpad( const string & s, string::size_type length, char c )
 	{
@@ -316,12 +372,16 @@ namespace simgear {
         return result;
     }
 
-    int compare_versions(const string& v1, const string& v2)
+    int compare_versions(const string& v1, const string& v2, int maxComponents)
     {
         vector<string> v1parts(split(v1, "."));
         vector<string> v2parts(split(v2, "."));
 
         int lastPart = std::min(v1parts.size(), v2parts.size());
+        if (maxComponents > 0) {
+            lastPart = std::min(lastPart, maxComponents);
+        }
+
         for (int part=0; part < lastPart; ++part) {
             int part1 = to_int(v1parts[part]);
             int part2 = to_int(v2parts[part]);

simgear/misc/strutils.hxx

@@ -70,6 +70,24 @@ namespace simgear {
 	std::string rstrip( const std::string& s );
 	std::string strip( const std::string& s );
 
+	/**
+         * Return a new string with any trailing \r and \n characters removed.
+         * Typically useful to clean a CR-terminated line obtained from
+         * std::getline() which, upon reading CRLF (\r\n), discards the Line
+         * Feed character (\n) but leaves the Carriage Return (\r) in the
+         * string.
+         * @param s Input string
+         * @return The cleaned string
+         */
+        std::string stripTrailingNewlines(const std::string& s);
+
+	/**
+         * Strip any trailing \r and \n characters from a string.
+         * Should have slightly less overhead than stripTrailingNewlines().
+         * @param s Input string (modified in-place)
+         */
+        void stripTrailingNewlines_inplace(std::string& s);
+
         /**
          * Right-padding of a string to a given length
          * @param s String to pad
@@ -104,6 +122,17 @@ namespace simgear {
 	       const char* sep = 0,
 	       int maxsplit = 0 );
 
+      /**
+       * split a string on any of several characters. Commonly used to deal
+       * with strings containing whitespace, newlines. To parse CSS style
+       * string, use with '\n\t ,' as the seperator list.
+       *
+       * Note consecutive seperators will not produce empty entries in the
+       * the result, i.e splitting 'a,b,,c,d' with a ',' will produce a result
+       * with four entries, not five.
+       */
+      string_list split_on_any_of(const std::string&, const char* seperators);
+
        /**
         * create a single string by joining the elements of a list with
         * another string.
@@ -145,8 +174,10 @@ namespace simgear {
      * any number of terms are supported.
      * @return 0 if versions match, -ve number if v1 is lower, +ve if v1
      * is greater
+     * @param maxComponents is the maximum number of components to look at.
+     * This can be used to ignore (say) the patch level by setting it to 2
      */
-    int compare_versions(const std::string& v1, const std::string& v2);
+    int compare_versions(const std::string& v1, const std::string& v2, int maxComponents = 0);
 
     /**
      * Convert a string to upper case.

simgear/misc/strutils_test.cxx

@@ -1,108 +1,181 @@
-/// Unit tests for function inside strutils package
-#define BOOST_TEST_MODULE misc
-#include <BoostTestTargetConfig.h>
+// Unit tests for functions inside the strutils package
 
 #include <errno.h>
 #include <stdlib.h>             // _set_errno() on Windows
 #include <string>
 #include <fstream>              // std::ifstream
+
+#include <simgear/misc/test_macros.hxx>
 #include <simgear/compiler.h>
-#include "strutils.hxx"
+#include <simgear/misc/strutils.hxx>
+
+using std::string;
 
 namespace strutils = simgear::strutils;
 
-BOOST_AUTO_TEST_CASE( strutils_functions )
+void test_strip()
 {
-  std::string a("abcd");
-  BOOST_CHECK_EQUAL(strutils::strip(a), a);
-  BOOST_CHECK_EQUAL(strutils::strip(" a "), "a");
-  BOOST_CHECK_EQUAL(strutils::lstrip(" a  "), "a  ");
-  BOOST_CHECK_EQUAL(strutils::rstrip("\ta "), "\ta");
+  string a("abcd");
+  SG_CHECK_EQUAL(strutils::strip(a), a);
+  SG_CHECK_EQUAL(strutils::strip(" a "), "a");
+  SG_CHECK_EQUAL(strutils::lstrip(" a  "), "a  ");
+  SG_CHECK_EQUAL(strutils::rstrip("\ta "), "\ta");
 
-  // check internal spacing is preserved
-  BOOST_CHECK_EQUAL(strutils::strip("\t \na \t b\r \n "), "a \t b");
+  // Check internal spacing is preserved
+  SG_CHECK_EQUAL(strutils::strip("\t \na \t b\r \n "), "a \t b");
+}
 
+void test_stripTrailingNewlines()
+{
+  SG_CHECK_EQUAL(strutils::stripTrailingNewlines("\rfoobar\n\r\n\n\r\r"),
+                 "\rfoobar");
+  SG_CHECK_EQUAL(strutils::stripTrailingNewlines("\rfoobar\r"), "\rfoobar");
+  SG_CHECK_EQUAL(strutils::stripTrailingNewlines("\rfoobar"), "\rfoobar");
+  SG_CHECK_EQUAL(strutils::stripTrailingNewlines(""), "");
+}
 
-  BOOST_CHECK(strutils::starts_with("banana", "ban"));
-  BOOST_CHECK(!strutils::starts_with("abanana", "ban"));
-  BOOST_CHECK(strutils::starts_with("banana", "banana")); // pass - string starts with itself
-  BOOST_CHECK(!strutils::starts_with("ban", "banana")); // fail - original string is prefix of
+void test_stripTrailingNewlines_inplace()
+{
+  string s = "\r\n\r\rfoo\n\r\rbar\n\r\n\r\r\n\r\r";
+  strutils::stripTrailingNewlines_inplace(s);
+  SG_CHECK_EQUAL(s, "\r\n\r\rfoo\n\r\rbar");
 
-  BOOST_CHECK(strutils::ends_with("banana", "ana"));
-  BOOST_CHECK(strutils::ends_with("foo.text", ".text"));
-  BOOST_CHECK(!strutils::ends_with("foo.text", ".html"));
+  s = "\rfoobar\r";
+  strutils::stripTrailingNewlines_inplace(s);
+  SG_CHECK_EQUAL(s, "\rfoobar");
 
-  BOOST_CHECK_EQUAL(strutils::simplify("\ta\t b  \nc\n\r \r\n"), "a b c");
-  BOOST_CHECK_EQUAL(strutils::simplify("The quick  - brown dog!"), "The quick - brown dog!");
-  BOOST_CHECK_EQUAL(strutils::simplify("\r\n  \r\n   \t  \r"), "");
+  s = "\rfoobar";
+  strutils::stripTrailingNewlines_inplace(s);
+  SG_CHECK_EQUAL(s, "\rfoobar");
 
-  BOOST_CHECK_EQUAL(strutils::to_int("999"), 999);
-  BOOST_CHECK_EQUAL(strutils::to_int("0000000"), 0);
-  BOOST_CHECK_EQUAL(strutils::to_int("-10000"), -10000);
+  s = "";
+  strutils::stripTrailingNewlines_inplace(s);
+  SG_CHECK_EQUAL(s, "");
+}
 
+void test_starts_with()
+{
+  SG_VERIFY(strutils::starts_with("banana", "ban"));
+  SG_VERIFY(!strutils::starts_with("abanana", "ban"));
+  // Pass - string starts with itself
+  SG_VERIFY(strutils::starts_with("banana", "banana"));
+  // Fail - original string is prefix of
+  SG_VERIFY(!strutils::starts_with("ban", "banana"));
+}
+
+void test_ends_with()
+{
+  SG_VERIFY(strutils::ends_with("banana", "ana"));
+  SG_VERIFY(strutils::ends_with("foo.text", ".text"));
+  SG_VERIFY(!strutils::ends_with("foo.text", ".html"));
+}
+
+void test_simplify()
+{
+  SG_CHECK_EQUAL(strutils::simplify("\ta\t b  \nc\n\r \r\n"), "a b c");
+  SG_CHECK_EQUAL(strutils::simplify("The quick  - brown dog!"),
+                 "The quick - brown dog!");
+  SG_CHECK_EQUAL(strutils::simplify("\r\n  \r\n   \t  \r"), "");
+}
+
+void test_to_int()
+{
+  SG_CHECK_EQUAL(strutils::to_int("999"), 999);
+  SG_CHECK_EQUAL(strutils::to_int("0000000"), 0);
+  SG_CHECK_EQUAL(strutils::to_int("-10000"), -10000);
+}
+
+void test_split()
+{
   string_list l = strutils::split("zero one two three four five");
-  BOOST_CHECK_EQUAL(l[2], "two");
-  BOOST_CHECK_EQUAL(l[5], "five");
-  BOOST_CHECK_EQUAL(l.size(), 6);
+  SG_CHECK_EQUAL(l[2], "two");
+  SG_CHECK_EQUAL(l[5], "five");
+  SG_CHECK_EQUAL(l.size(), 6);
 
-  std::string j = strutils::join(l, "&");
-  BOOST_CHECK_EQUAL(j, "zero&one&two&three&four&five");
+  string j = strutils::join(l, "&");
+  SG_CHECK_EQUAL(j, "zero&one&two&three&four&five");
 
   l = strutils::split("alpha:beta:gamma:delta", ":", 2);
-  BOOST_CHECK_EQUAL(l.size(), 3);
-  BOOST_CHECK_EQUAL(l[0], "alpha");
-  BOOST_CHECK_EQUAL(l[1], "beta");
-  BOOST_CHECK_EQUAL(l[2], "gamma:delta");
+  SG_CHECK_EQUAL(l.size(), 3);
+  SG_CHECK_EQUAL(l[0], "alpha");
+  SG_CHECK_EQUAL(l[1], "beta");
+  SG_CHECK_EQUAL(l[2], "gamma:delta");
 
   l = strutils::split("", ",");
-  BOOST_CHECK_EQUAL(l.size(), 1);
-  BOOST_CHECK_EQUAL(l[0], "");
+  SG_CHECK_EQUAL(l.size(), 1);
+  SG_CHECK_EQUAL(l[0], "");
 
   l = strutils::split(",", ",");
-  BOOST_CHECK_EQUAL(l.size(), 2);
-  BOOST_CHECK_EQUAL(l[0], "");
-  BOOST_CHECK_EQUAL(l[1], "");
+  SG_CHECK_EQUAL(l.size(), 2);
+  SG_CHECK_EQUAL(l[0], "");
+  SG_CHECK_EQUAL(l[1], "");
 
   l = strutils::split(",,", ",");
-  BOOST_CHECK_EQUAL(l.size(), 3);
-  BOOST_CHECK_EQUAL(l[0], "");
-  BOOST_CHECK_EQUAL(l[1], "");
-  BOOST_CHECK_EQUAL(l[2], "");
+  SG_CHECK_EQUAL(l.size(), 3);
+  SG_CHECK_EQUAL(l[0], "");
+  SG_CHECK_EQUAL(l[1], "");
+  SG_CHECK_EQUAL(l[2], "");
 
   l = strutils::split("  ", ",");
-  BOOST_CHECK_EQUAL(l.size(), 1);
-  BOOST_CHECK_EQUAL(l[0], "  ");
+  SG_CHECK_EQUAL(l.size(), 1);
+  SG_CHECK_EQUAL(l[0], "  ");
 
-  BOOST_CHECK_EQUAL(strutils::unescape("\\ \\n\\t\\x41\\117a"), " \n\tAOa");
+
+    const char* testCases[] = {
+        "alpha,bravo, charlie\tdelta\n\recho,    \t\r\nfoxtrot golf,\n\t\n \n",
+        "  alpha  bravo \t charlie,,,delta    echo\nfoxtrot\rgolf"
+    };
+
+    for (const char* data: testCases) {
+        l = strutils::split_on_any_of(data, "\n\t\r ,");
+        SG_CHECK_EQUAL(l.size(), 7);
+        SG_CHECK_EQUAL(l[0], "alpha");
+        SG_CHECK_EQUAL(l[1], "bravo");
+        SG_CHECK_EQUAL(l[2], "charlie");
+        SG_CHECK_EQUAL(l[3], "delta");
+        SG_CHECK_EQUAL(l[4], "echo");
+        SG_CHECK_EQUAL(l[5], "foxtrot");
+        SG_CHECK_EQUAL(l[6], "golf");
+    }
 }
 
-BOOST_AUTO_TEST_CASE( compare_versions )
+void test_unescape()
 {
-  BOOST_CHECK_LT(strutils::compare_versions("1.0.12", "1.1"), 0);
-  BOOST_CHECK_GT(strutils::compare_versions("1.1", "1.0.12"), 0);
-  BOOST_CHECK_EQUAL(strutils::compare_versions("10.6.7", "10.6.7"), 0);
-  BOOST_CHECK_LT(strutils::compare_versions("2.0", "2.0.99"), 0);
-  BOOST_CHECK_EQUAL(strutils::compare_versions("99", "99"), 0);
-  BOOST_CHECK_GT(strutils::compare_versions("99", "98"), 0);
-
-  // since we compare numerically, leasing zeros shouldn't matter
-  BOOST_CHECK_EQUAL(strutils::compare_versions("0.06.7", "0.6.07"), 0);
+  SG_CHECK_EQUAL(strutils::unescape("\\ \\n\\t\\x41\\117a"), " \n\tAOa");
 }
 
-BOOST_AUTO_TEST_CASE( md5_hex )
+void test_compare_versions()
+{
+  SG_CHECK_LT(strutils::compare_versions("1.0.12", "1.1"), 0);
+  SG_CHECK_GT(strutils::compare_versions("1.1", "1.0.12"), 0);
+  SG_CHECK_EQUAL(strutils::compare_versions("10.6.7", "10.6.7"), 0);
+  SG_CHECK_LT(strutils::compare_versions("2.0", "2.0.99"), 0);
+  SG_CHECK_EQUAL(strutils::compare_versions("99", "99"), 0);
+  SG_CHECK_GT(strutils::compare_versions("99", "98"), 0);
+
+  // Since we compare numerically, leading zeros shouldn't matter
+  SG_CHECK_EQUAL(strutils::compare_versions("0.06.7", "0.6.07"), 0);
+
+
+  SG_CHECK_EQUAL(strutils::compare_versions("10.6.7", "10.6.8", 2), 0);
+  SG_CHECK_GT(strutils::compare_versions("10.7.7", "10.6.8", 2), 0);
+  SG_CHECK_EQUAL(strutils::compare_versions("10.8.7", "10.6.8", 1), 0);
+}
+
+void test_md5_hex()
 {
   // hex encoding
   unsigned char raw_data[] = {0x0f, 0x1a, 0xbc, 0xd2, 0xe3, 0x45, 0x67, 0x89};
-  const std::string& hex_data =
+  const string& hex_data =
     strutils::encodeHex(raw_data, sizeof(raw_data)/sizeof(raw_data[0]));
-  BOOST_REQUIRE_EQUAL(hex_data, "0f1abcd2e3456789");
-  BOOST_REQUIRE_EQUAL(strutils::encodeHex("abcde"), "6162636465");
+  SG_CHECK_EQUAL(hex_data, "0f1abcd2e3456789");
+  SG_CHECK_EQUAL(strutils::encodeHex("abcde"), "6162636465");
 
   // md5
-  BOOST_CHECK_EQUAL(strutils::md5("test"), "098f6bcd4621d373cade4e832627b4f6");
+  SG_CHECK_EQUAL(strutils::md5("test"), "098f6bcd4621d373cade4e832627b4f6");
 }
 
-BOOST_AUTO_TEST_CASE( error_string )
+void test_error_string()
 {
 #if defined(_WIN32)
   _set_errno(0);
@@ -118,7 +191,25 @@ BOOST_AUTO_TEST_CASE( error_string )
   int saved_errno = errno;
 #endif
 
-  BOOST_CHECK(!f.is_open());
-  BOOST_CHECK_NE(saved_errno, 0);
-  BOOST_CHECK_GT(strutils::error_string(saved_errno).size(), 0);
+  SG_VERIFY(!f.is_open());
+  SG_CHECK_NE(saved_errno, 0);
+  SG_CHECK_GT(strutils::error_string(saved_errno).size(), 0);
+}
+
+int main(int argc, char* argv[])
+{
+    test_strip();
+    test_stripTrailingNewlines();
+    test_stripTrailingNewlines_inplace();
+    test_starts_with();
+    test_ends_with();
+    test_simplify();
+    test_to_int();
+    test_split();
+    test_unescape();
+    test_compare_versions();
+    test_md5_hex();
+    test_error_string();
+
+    return EXIT_SUCCESS;
 }

simgear/misc/test_macros.hxx

@@ -1,42 +1,179 @@
+// -*- coding: utf-8 -*-
 
 #ifndef SG_MISC_TEST_MACROS_HXX
 #define SG_MISC_TEST_MACROS_HXX
 
-#include <cmath> // for fabs()
+#include <iostream>
+#include <cmath>                // for std::fabs()
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        std::cerr << "failed:" << #a << " != " << #b << std::endl; \
-        std::cerr << "\tgot:'" << a << "'" << std::endl; \
-        std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
-        exit(1); \
-    }
 
-#define VERIFY(a) \
+// Assertion-like test
+#define SG_VERIFY(a) \
     if (!(a))  { \
-        std::cerr << "failed:" << #a << std::endl; \
-        std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
+        std::cerr << "failed: " << #a << std::endl; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
         exit(1); \
     }
 
-#define COMPARE_EP(a, b) \
-    if (fabs(a - b) > SG_EPSILON)  { \
-        std::cerr << "failed with epsilon:" << #a << " != " << #b << std::endl; \
-        std::cerr << "\tgot:'" << a << "'" << std::endl; \
-        std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
+// Internal macro (implementation detail). 'a' and 'b' don't always support
+// operator<<. This is why we use (a0) and (b0) after '<<', otherwise in such
+// cases the test couldn't be compiled, even if 'stream' is false.
+#define SG_CHECK_EQUAL0(a, b, stream, a0, b0) \
+    if ( !((a) == (b)) )  { \
+        std::cerr << "failed: " << #a << " == " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
         exit(1); \
     }
 
-#define COMPARE_EP2(a, b, ep) \
-    if (fabs(a - b) > ep)  { \
-        std::cerr << "failed with epsilon:" << #a << " != " << #b << std::endl; \
-        std::cerr << "\tgot:'" << a << "'" << std::endl; \
-        std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
+// Test macros for user consumption. The _NOSTREAM variant is for cases where
+// 'a' or 'b' doesn't support operator<< (or where using it would have
+// undesirable side effects).
+#define SG_CHECK_EQUAL(a, b) SG_CHECK_EQUAL0((a), (b), true, (a), (b))
+#define SG_CHECK_EQUAL_NOSTREAM(a, b) SG_CHECK_EQUAL0((a), (b), false, "", "")
+
+// “Approximate equality” test (EP stands for “epsilon”)
+#define SG_CHECK_EQUAL_EP0(a, b, stream, a0, b0) \
+    if (std::fabs((a) - (b)) > SG_EPSILON)  { \
+        std::cerr << "failed: " << #a << " ~= " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
         exit(1); \
     }
 
+#define SG_CHECK_EQUAL_EP(a, b) SG_CHECK_EQUAL_EP0((a), (b), true, (a), (b))
+#define SG_CHECK_EQUAL_EP_NOSTREAM(a, b) \
+    SG_CHECK_EQUAL_EP0((a), (b), false, "", "")
+
+// Same as SG_CHECK_EQUAL_EP*, except the “epsilon” can be chosen by the caller
+#define SG_CHECK_EQUAL_EP2_0(a, b, ep, stream, a0, b0) \
+  if (std::fabs((a) - (b)) > (ep))  {                  \
+        std::cerr << "failed: " << #a << " ~= " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_EQUAL_EP2(a, b, ep) \
+    SG_CHECK_EQUAL_EP2_0((a), (b), ep, true, (a), (b))
+#define SG_CHECK_EQUAL_EP2_NOSTREAM(a, b) \
+    SG_CHECK_EQUAL_EP2_0((a), (b), ep, false, "", "")
+
+// “Non-equal” test
+#define SG_CHECK_NE0(a, b, stream, a0, b0) \
+    if ( !((a) != (b)) )  { \
+        std::cerr << "failed: " << #a << " != " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_NE(a, b) SG_CHECK_NE0((a), (b), true, (a), (b))
+#define SG_CHECK_NE_NOSTREAM(a, b) SG_CHECK_NE0((a), (b), false, "", "")
+
+// “Lower than” test
+#define SG_CHECK_LT0(a, b, stream, a0, b0) \
+    if ( !((a) < (b)) )  { \
+        std::cerr << "failed: " << #a << " < " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_LT(a, b) SG_CHECK_LT0((a), (b), true, (a), (b))
+#define SG_CHECK_LT_NOSTREAM(a, b) SG_CHECK_LT0((a), (b), false, "", "")
+
+// “Lower than or equal” test
+#define SG_CHECK_LE0(a, b, stream, a0, b0) \
+    if ( !((a) <= (b)) )  { \
+        std::cerr << "failed: " << #a << " <= " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_LE(a, b) SG_CHECK_LE0((a), (b), true, (a), (b))
+#define SG_CHECK_LE_NOSTREAM(a, b) SG_CHECK_LE0((a), (b), false, "", "")
+
+// “Greater than” test
+#define SG_CHECK_GT0(a, b, stream, a0, b0) \
+    if ( !((a) > (b)) )  { \
+        std::cerr << "failed: " << #a << " > " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_GT(a, b) SG_CHECK_GT0((a), (b), true, (a), (b))
+#define SG_CHECK_GT_NOSTREAM(a, b) SG_CHECK_GT0((a), (b), false, "", "")
+
+// “Greater than or equal” test
+#define SG_CHECK_GE0(a, b, stream, a0, b0) \
+    if ( !((a) >= (b)) )  { \
+        std::cerr << "failed: " << #a << " >= " << #b << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "' and '" << (b0) << "'" \
+                    << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_GE(a, b) SG_CHECK_GE0((a), (b), true, (a), (b))
+#define SG_CHECK_GE_NOSTREAM(a, b) SG_CHECK_GE0((a), (b), false, "", "")
+
+// “Is NULL” test
+#define SG_CHECK_IS_NULL0(a, stream, a0) \
+    if ( !((a) == nullptr) )  { \
+        std::cerr << "failed: " << #a << " == nullptr" << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "'" << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_IS_NULL(a) SG_CHECK_IS_NULL0((a), true, (a))
+#define SG_CHECK_IS_NULL_NOSTREAM(a) SG_CHECK_IS_NULL0((a), false, "")
+
+// “Is not NULL” test
+#define SG_CHECK_IS_NOT_NULL0(a, stream, a0) \
+    if ( !((a) != nullptr) )  { \
+        std::cerr << "failed: " << #a << " != nullptr" << std::endl; \
+        if (stream) { \
+          std::cerr << "\tgot '" << (a0) << "'" << std::endl; \
+        }; \
+        std::cerr << "\tat " << __FILE__ << ":" << __LINE__ << std::endl; \
+        exit(1); \
+    }
+
+#define SG_CHECK_IS_NOT_NULL(a) SG_CHECK_IS_NOT_NULL0((a), true, (a))
+#define SG_CHECK_IS_NOT_NULL_NOSTREAM(a) SG_CHECK_IS_NOT_NULL0((a), false, "")
+
+// “Always failing” test
 #define SG_TEST_FAIL(msg) \
-  std::cerr << "failure:" << msg; \
+  std::cerr << "failure: " << msg; \
   exit(1);
 
 

simgear/nasal/cppbind/Ghost.hxx

@@ -1200,7 +1200,7 @@ namespace nasal
         return ctx;
       };
 
-      typedef std::auto_ptr<Ghost> GhostPtr;
+      typedef std::unique_ptr<Ghost> GhostPtr;
       MemberMap         _members;
       fallback_getter_t _fallback_getter;
       fallback_setter_t _fallback_setter;

simgear/package/Catalog.cxx

@@ -27,7 +27,7 @@
 #include <simgear/io/HTTPRequest.hxx>
 #include <simgear/io/HTTPClient.hxx>
 #include <simgear/misc/sg_dir.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/package/Package.hxx>
 #include <simgear/package/Root.hxx>

simgear/package/CatalogTest.cxx

@@ -126,46 +126,55 @@ int parseTest()
     pkg::Root* root = new pkg::Root(rootPath, "8.1.12");
     pkg::CatalogRef cat = pkg::Catalog::createFromPath(root, SGPath(SRC_DIR "/catalogTest1"));
 
-    VERIFY(cat.valid());
+    SG_VERIFY(cat.valid());
 
-    COMPARE(cat->id(), "org.flightgear.test.catalog1");
-    COMPARE(cat->url(), "http://localhost:2000/catalogTest1/catalog.xml");
-    COMPARE(cat->description(), "First test catalog");
+    SG_CHECK_EQUAL(cat->id(), "org.flightgear.test.catalog1");
+    SG_CHECK_EQUAL(cat->url(), "http://localhost:2000/catalogTest1/catalog.xml");
+    SG_CHECK_EQUAL(cat->description(), "First test catalog");
 
 // check the packages too
-    COMPARE(cat->packages().size(), 4);
+    SG_CHECK_EQUAL(cat->packages().size(), 4);
 
     pkg::PackageRef p1 = cat->packages().front();
-    COMPARE(p1->catalog(), cat.ptr());
+    SG_CHECK_EQUAL(p1->catalog(), cat.ptr());
 
-    COMPARE(p1->id(), "alpha");
-    COMPARE(p1->qualifiedId(), "org.flightgear.test.catalog1.alpha");
-    COMPARE(p1->name(), "Alpha package");
-    COMPARE(p1->revision(), 8);
-    COMPARE(p1->fileSizeBytes(), 593);
+    SG_CHECK_EQUAL(p1->id(), "alpha");
+    SG_CHECK_EQUAL(p1->qualifiedId(), "org.flightgear.test.catalog1.alpha");
+    SG_CHECK_EQUAL(p1->name(), "Alpha package");
+    SG_CHECK_EQUAL(p1->revision(), 8);
+    SG_CHECK_EQUAL(p1->fileSizeBytes(), 593);
 
 
     pkg::PackageRef p2 = cat->getPackageById("c172p");
-    VERIFY(p2.valid());
-    COMPARE(p2->qualifiedId(), "org.flightgear.test.catalog1.c172p");
-    COMPARE(p2->description(), "A plane made by Cessna");
+    SG_VERIFY(p2.valid());
+    SG_CHECK_EQUAL(p2->qualifiedId(), "org.flightgear.test.catalog1.c172p");
+    SG_CHECK_EQUAL(p2->description(), "A plane made by Cessna on Jupiter");
 
-    pkg::Package::ThumbnailVec thumbs = p2->thumbnailsForVariant(0);
-    COMPARE(thumbs.size(), 3);
+    pkg::Package::PreviewVec thumbs = p2->previewsForVariant(0);
+    SG_CHECK_EQUAL(thumbs.size(), 3);
 
-    auto index = std::find_if(thumbs.begin(), thumbs.end(), [](const pkg::Package::Thumbnail& t)
-                             { return (t.type == pkg::Package::Thumbnail::Type::EXTERIOR); });
-    VERIFY(index != thumbs.end());
-    COMPARE(index->path, "thumb-exterior.png");
-    COMPARE(index->url, "http://foo.bar.com/thumb-exterior.png");
-    VERIFY(index->type == pkg::Package::Thumbnail::Type::EXTERIOR);
+    auto index = std::find_if(thumbs.begin(), thumbs.end(), [](const pkg::Package::Preview& t)
+                             { return (t.type == pkg::Package::Preview::Type::EXTERIOR); });
+    SG_VERIFY(index != thumbs.end());
+    SG_CHECK_EQUAL(index->path, "thumb-exterior.png");
+    SG_CHECK_EQUAL(index->url, "http://foo.bar.com/thumb-exterior.png");
+    SG_VERIFY(index->type == pkg::Package::Preview::Type::EXTERIOR);
 
-    index = std::find_if(thumbs.begin(), thumbs.end(), [](const pkg::Package::Thumbnail& t)
-                        { return (t.type == pkg::Package::Thumbnail::Type::PANEL); });
-    VERIFY(index != thumbs.end());
-    COMPARE(index->path, "thumb-panel.png");
-    COMPARE(index->url, "http://foo.bar.com/thumb-panel.png");
-    VERIFY(index->type == pkg::Package::Thumbnail::Type::PANEL);
+    index = std::find_if(thumbs.begin(), thumbs.end(), [](const pkg::Package::Preview& t)
+                        { return (t.type == pkg::Package::Preview::Type::PANEL); });
+    SG_VERIFY(index != thumbs.end());
+    SG_CHECK_EQUAL(index->path, "thumb-panel.png");
+    SG_CHECK_EQUAL(index->url, "http://foo.bar.com/thumb-panel.png");
+    SG_VERIFY(index->type == pkg::Package::Preview::Type::PANEL);
+
+// old-style thumbnails
+    string_list oldThumbUrls = p2->thumbnailUrls();
+    SG_CHECK_EQUAL(oldThumbUrls.size(), 1);
+    SG_CHECK_EQUAL(oldThumbUrls.at(0), "http://foo.bar.com/thumb-exterior.png");
+
+    string_list oldThumbPaths = p2->thumbnails();
+    SG_CHECK_EQUAL(oldThumbPaths.size(), 1);
+    SG_CHECK_EQUAL(oldThumbPaths.at(0), "exterior.png");
 
 // test variants
     try {
@@ -175,50 +184,86 @@ int parseTest()
       // expected
     }
 
+    unsigned int skisVariantFull = p2->indexOfVariant("org.flightgear.test.catalog1.c172p-skis");
+    SG_VERIFY(skisVariantFull > 0);
+
     unsigned int skisVariant = p2->indexOfVariant("c172p-skis");
-    VERIFY(skisVariant > 0);
+    SG_VERIFY(skisVariant > 0);
 
-    pkg::Package::ThumbnailVec thumbs2 = p2->thumbnailsForVariant(skisVariant);
-    COMPARE(thumbs2.size(), 2);
+    SG_CHECK_EQUAL(skisVariant, skisVariantFull);
 
-    index = std::find_if(thumbs2.begin(), thumbs2.end(), [](const pkg::Package::Thumbnail& t)
-                              { return (t.type == pkg::Package::Thumbnail::Type::EXTERIOR); });
-    VERIFY(index != thumbs2.end());
-    COMPARE(index->path, "thumb-exterior-skis.png");
-    COMPARE(index->url, "http://foo.bar.com/thumb-exterior-skis.png");
-    VERIFY(index->type == pkg::Package::Thumbnail::Type::EXTERIOR);
+    SG_CHECK_EQUAL(p2->getLocalisedProp("description", skisVariant),
+                   "A plane with skis");
+    SG_CHECK_EQUAL(p2->getLocalisedProp("author", skisVariant),
+                   "Standard author");
+
+    unsigned int floatsVariant = p2->indexOfVariant("c172p-floats");
+    SG_VERIFY(floatsVariant > 0);
+
+    SG_CHECK_EQUAL(p2->getLocalisedProp("description", floatsVariant),
+                   "A plane with floats");
+    SG_CHECK_EQUAL(p2->getLocalisedProp("author", floatsVariant),
+                   "Floats variant author");
+
+    pkg::Package::PreviewVec thumbs2 = p2->previewsForVariant(skisVariant);
+    SG_CHECK_EQUAL(thumbs2.size(), 2);
+
+    index = std::find_if(thumbs2.begin(), thumbs2.end(), [](const pkg::Package::Preview& t)
+                              { return (t.type == pkg::Package::Preview::Type::EXTERIOR); });
+    SG_VERIFY(index != thumbs2.end());
+    SG_CHECK_EQUAL(index->path, "thumb-exterior-skis.png");
+    SG_CHECK_EQUAL(index->url, "http://foo.bar.com/thumb-exterior-skis.png");
+    SG_VERIFY(index->type == pkg::Package::Preview::Type::EXTERIOR);
 
 
 // test filtering / searching too
     string_set tags(p2->tags());
-    COMPARE(tags.size(), 4);
-    VERIFY(tags.find("ifr") != tags.end());
-    VERIFY(tags.find("cessna") != tags.end());
-    VERIFY(tags.find("jet") == tags.end());
+    SG_CHECK_EQUAL(tags.size(), 4);
+    SG_VERIFY(tags.find("ifr") != tags.end());
+    SG_VERIFY(tags.find("cessna") != tags.end());
+    SG_VERIFY(tags.find("jet") == tags.end());
 
 
     SGPropertyNode_ptr queryA(new SGPropertyNode);
     queryA->setStringValue("tag", "ifr");
-    VERIFY(p2->matches(queryA.ptr()));
+    SG_VERIFY(p2->matches(queryA.ptr()));
 
     SGPropertyNode_ptr queryB(new SGPropertyNode);
     queryB->setStringValue("name", "ces");
-    VERIFY(p2->matches(queryB.ptr()));
+    SG_VERIFY(p2->matches(queryB.ptr()));
 
     SGPropertyNode_ptr queryC(new SGPropertyNode);
     queryC->setStringValue("name", "foo");
-    VERIFY(!p2->matches(queryC.ptr()));
+    SG_VERIFY(!p2->matches(queryC.ptr()));
 
     SGPropertyNode_ptr queryD(new SGPropertyNode);
     queryD->setIntValue("rating-FDM", 3);
-    VERIFY(p2->matches(queryD.ptr()));
+    SG_VERIFY(p2->matches(queryD.ptr()));
 
     SGPropertyNode_ptr queryE(new SGPropertyNode);
     queryE->setIntValue("rating-model", 5);
     queryE->setStringValue("description", "cessna");
-    VERIFY(p2->matches(queryE.ptr()));
+    SG_VERIFY(p2->matches(queryE.ptr()));
 
+    {
+        SGPropertyNode_ptr queryText(new SGPropertyNode);
+        queryText->setStringValue("any-of/text", "jupiter");
+        SG_VERIFY(p2->matches(queryText.ptr()));
+    }
 
+    {
+        SGPropertyNode_ptr queryText(new SGPropertyNode);
+        queryText->setStringValue("any-of/tag", "twin-engine");
+        queryText->setStringValue("any-of/tag", "ga");
+        SG_VERIFY(p2->matches(queryText.ptr()));
+    }
+
+    // match variant descriptions
+    {
+        SGPropertyNode_ptr queryText(new SGPropertyNode);
+        queryText->setStringValue("any-of/description", "float");
+        SG_VERIFY(p2->matches(queryText.ptr()));
+    }
     delete root;
     return EXIT_SUCCESS;
 }
@@ -244,16 +289,16 @@ void testAddCatalog(HTTP::Client* cl)
     SGPath p(rootPath);
     p.append("org.flightgear.test.catalog1");
     p.append("catalog.xml");
-    VERIFY(p.exists());
-    COMPARE(root->allPackages().size(), 4);
-    COMPARE(root->catalogs().size(), 1);
+    SG_VERIFY(p.exists());
+    SG_CHECK_EQUAL(root->allPackages().size(), 4);
+    SG_CHECK_EQUAL(root->catalogs().size(), 1);
 
     pkg::PackageRef p1 = root->getPackageById("alpha");
-    COMPARE(p1->id(), "alpha");
+    SG_CHECK_EQUAL(p1->id(), "alpha");
 
     pkg::PackageRef p2 = root->getPackageById("org.flightgear.test.catalog1.c172p");
-    COMPARE(p2->id(), "c172p");
-    COMPARE(p2->qualifiedId(), "org.flightgear.test.catalog1.c172p");
+    SG_CHECK_EQUAL(p2->id(), "c172p");
+    SG_CHECK_EQUAL(p2->qualifiedId(), "org.flightgear.test.catalog1.c172p");
 
 }
 
@@ -274,14 +319,14 @@ void testInstallPackage(HTTP::Client* cl)
     pkg::PackageRef p1 = root->getPackageById("org.flightgear.test.catalog1.c172p");
     pkg::InstallRef ins = p1->install();
 
-    VERIFY(ins->isQueued());
+    SG_VERIFY(ins->isQueued());
 
     waitForUpdateComplete(cl, root);
-    VERIFY(p1->isInstalled());
-    VERIFY(p1->existingInstall() == ins);
+    SG_VERIFY(p1->isInstalled());
+    SG_VERIFY(p1->existingInstall() == ins);
 
     pkg::PackageRef commonDeps = root->getPackageById("common-sounds");
-    VERIFY(commonDeps->existingInstall());
+    SG_VERIFY(commonDeps->existingInstall());
 
     // verify on disk state
     SGPath p(rootPath);
@@ -289,17 +334,17 @@ void testInstallPackage(HTTP::Client* cl)
     p.append("Aircraft");
     p.append("c172p");
 
-    COMPARE(p, ins->path());
+    SG_CHECK_EQUAL(p, ins->path());
 
     p.append("c172p-floats-set.xml");
-    VERIFY(p.exists());
+    SG_VERIFY(p.exists());
 
     SGPath p2(rootPath);
     p2.append("org.flightgear.test.catalog1");
     p2.append("Aircraft");
     p2.append("sounds");
     p2.append("sharedfile.txt");
-    VERIFY(p2.exists());
+    SG_VERIFY(p2.exists());
 }
 
 void testUninstall(HTTP::Client* cl)
@@ -320,11 +365,11 @@ void testUninstall(HTTP::Client* cl)
 
     waitForUpdateComplete(cl, root);
 
-    VERIFY(p1->isInstalled());
+    SG_VERIFY(p1->isInstalled());
 
     ins->uninstall();
 
-    VERIFY(!ins->path().exists());
+    SG_VERIFY(!ins->path().exists());
 }
 
 void testRemoveCatalog(HTTP::Client* cl)
@@ -348,7 +393,7 @@ void testRemoveCatalog(HTTP::Client* cl)
 
         waitForUpdateComplete(cl, root);
 
-        VERIFY(p1->isInstalled());
+        SG_VERIFY(p1->isInstalled());
     }
 
     root->removeCatalogById("org.flightgear.test.catalog1");
@@ -356,13 +401,13 @@ void testRemoveCatalog(HTTP::Client* cl)
 
     SGPath p2(rootPath);
     p2.append("org.flightgear.test.catalog1");
-    VERIFY(!p2.exists());
+    SG_VERIFY(!p2.exists());
 
-    VERIFY(root->allPackages().empty());
-    VERIFY(root->catalogs().empty());
+    SG_VERIFY(root->allPackages().empty());
+    SG_VERIFY(root->catalogs().empty());
 
     pkg::CatalogRef c = root->getCatalogById("org.flightgear.test.catalog1");
-    COMPARE(c, pkg::CatalogRef());
+    SG_CHECK_EQUAL(c, pkg::CatalogRef());
 }
 
 template <class T>
@@ -396,37 +441,39 @@ void testRefreshCatalog(HTTP::Client* cl)
 
         waitForUpdateComplete(cl, root);
 
-        VERIFY(p1->isInstalled());
-        VERIFY(p2->isInstalled());
+        SG_VERIFY(p1->isInstalled());
+        SG_VERIFY(p2->isInstalled());
     }
 
-    VERIFY(root->packagesNeedingUpdate().empty());
+    SG_VERIFY(root->packagesNeedingUpdate().empty());
 
     global_catalogVersion = 2;
 
-    VERIFY(!cl->hasActiveRequests());
+    SG_VERIFY(!cl->hasActiveRequests());
     root->refresh();
 
     // should be a no-op due to catalog age testing
-    VERIFY(!cl->hasActiveRequests());
+    SG_VERIFY(!cl->hasActiveRequests());
 
     // force it this time
     root->refresh(true);
-    VERIFY(cl->hasActiveRequests());
+    SG_VERIFY(cl->hasActiveRequests());
     waitForUpdateComplete(cl, root);
 
     pkg::CatalogRef c = root->getCatalogById("org.flightgear.test.catalog1");
-    COMPARE(c->ageInSeconds(), 0);
+    SG_CHECK_EQUAL(c->ageInSeconds(), 0);
 
-    VERIFY(root->getPackageById("dc3") != pkg::PackageRef());
-    COMPARE(root->packagesNeedingUpdate().size(), 2);
+    SG_VERIFY(root->getPackageById("dc3") != pkg::PackageRef());
+    SG_CHECK_EQUAL(root->packagesNeedingUpdate().size(), 2);
 
     pkg::PackageList needingUpdate = root->packagesNeedingUpdate();
-    VERIFY(contains(needingUpdate, root->getPackageById("common-sounds")));
-    VERIFY(contains(needingUpdate, root->getPackageById("org.flightgear.test.catalog1.alpha")));
+    SG_VERIFY(contains(needingUpdate, root->getPackageById("common-sounds")));
+    SG_VERIFY(
+      contains(needingUpdate,
+               root->getPackageById("org.flightgear.test.catalog1.alpha")));
 
     pkg::InstallRef ins = root->getPackageById("alpha")->existingInstall();
-    VERIFY(ins->hasUpdate());
+    SG_VERIFY(ins->hasUpdate());
 
     for (pkg::PackageList::const_iterator it = needingUpdate.begin();
          it != needingUpdate.end(); ++it)
@@ -436,8 +483,8 @@ void testRefreshCatalog(HTTP::Client* cl)
 
     waitForUpdateComplete(cl, root);
 
-    VERIFY(root->packagesNeedingUpdate().empty());
-    COMPARE(root->getPackageById("common-sounds")->revision(), 11);
+    SG_VERIFY(root->packagesNeedingUpdate().empty());
+    SG_CHECK_EQUAL(root->getPackageById("common-sounds")->revision(), 11);
 }
 
 void testInstallTarPackage(HTTP::Client* cl)
@@ -455,14 +502,14 @@ void testInstallTarPackage(HTTP::Client* cl)
     waitForUpdateComplete(cl, root);
 
     pkg::PackageRef p1 = root->getPackageById("org.flightgear.test.catalog1.b737-NG");
-    COMPARE(p1->id(), "b737-NG");
+    SG_CHECK_EQUAL(p1->id(), "b737-NG");
     pkg::InstallRef ins = p1->install();
 
-    VERIFY(ins->isQueued());
+    SG_VERIFY(ins->isQueued());
 
     waitForUpdateComplete(cl, root);
-    VERIFY(p1->isInstalled());
-    VERIFY(p1->existingInstall() == ins);
+    SG_VERIFY(p1->isInstalled());
+    SG_VERIFY(p1->existingInstall() == ins);
 
     // verify on disk state
     SGPath p(rootPath);
@@ -470,10 +517,10 @@ void testInstallTarPackage(HTTP::Client* cl)
     p.append("Aircraft");
     p.append("b737NG");
 
-    COMPARE(p, ins->path());
+    SG_CHECK_EQUAL(p, ins->path());
 
     p.append("b737-900-set.xml");
-    VERIFY(p.exists());
+    SG_VERIFY(p.exists());
 }
 
 

simgear/package/Install.cxx

@@ -33,7 +33,7 @@
 #include <simgear/io/HTTPClient.hxx>
 #include <simgear/misc/sg_dir.hxx>
 #include <simgear/misc/strutils.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 extern "C" {
     void fill_memory_filefunc (zlib_filefunc_def*);
@@ -152,6 +152,11 @@ protected:
             return;
         }
 
+		// disable caching on the owner's path, otherwise the upcoming
+		// delete & rename confuse everything
+		m_owner->m_path.set_cached(false);
+		m_extractPath.set_cached(false);
+
         if (m_owner->path().exists()) {
             Dir destDir(m_owner->path());
             destDir.remove(true /* recursive */);

simgear/package/Package.cxx

@@ -48,63 +48,113 @@ void Package::initWithProps(const SGPropertyNode* aProps)
     }
 
     m_id = m_props->getStringValue("id");
+
+    m_variants.push_back(m_id);
+    for (auto var : m_props->getChildren("variant")) {
+        m_variants.push_back(var->getStringValue("id"));
+    }
 }
 
 void Package::updateFromProps(const SGPropertyNode* aProps)
 {
     m_tags.clear();
+    m_variants.clear();
     initWithProps(aProps);
 }
 
 bool Package::matches(const SGPropertyNode* aFilter) const
 {
-    int nChildren = aFilter->nChildren();
-    for (int i = 0; i < nChildren; i++) {
-        const SGPropertyNode* c = aFilter->getChild(i);
-        const std::string& filter_name = c->getNameString();
+    const std::string& filter_name = aFilter->getNameString();
 
-        if (strutils::starts_with(filter_name, "rating-")) {
-            int minRating = c->getIntValue();
-            std::string rname = c->getName() + 7;
-            int ourRating = m_props->getChild("rating")->getIntValue(rname, 0);
-            if (ourRating < minRating) {
+    if (filter_name == "any-of") {
+        const int anyChildren = aFilter->nChildren();
+        for (int j = 0; j < anyChildren; j++) {
+            const SGPropertyNode* anyChild = aFilter->getChild(j);
+            if (matches(anyChild)) {
+                return true;
+            }
+        }
+
+        return false; // none of our children matched
+    } else if (filter_name.empty() || (filter_name == "all-of")) {
+        const int allChildren = aFilter->nChildren();
+        for (int j = 0; j < allChildren; j++) {
+            const SGPropertyNode* allChild = aFilter->getChild(j);
+            if (!matches(allChild)) {
                 return false;
             }
         }
-        else if (filter_name == "tag") {
-            std::string tag(c->getStringValue());
-            boost::to_lower(tag);
-            if (m_tags.find(tag) == m_tags.end()) {
-                return false;
+
+        return true; // all of our children matched
+    }
+
+    if (strutils::starts_with(filter_name, "rating-")) {
+        int minRating = aFilter->getIntValue();
+        std::string rname = aFilter->getName() + 7;
+        int ourRating = m_props->getChild("rating")->getIntValue(rname, 0);
+        return (ourRating >= minRating);
+    }
+
+    if (filter_name == "tag") {
+        std::string tag(aFilter->getStringValue());
+        boost::to_lower(tag);
+        return (m_tags.find(tag) != m_tags.end());
+    }
+
+    if (filter_name == "installed") {
+        return (isInstalled() == aFilter->getBoolValue());
+    }
+
+    bool handled = false;
+    // substring search of name, description, across variants too
+    if ((filter_name == "text") || (filter_name == "name")) {
+        handled = true;
+      std::string n(aFilter->getStringValue());
+      boost::to_lower(n);
+
+      size_t pos = boost::to_lower_copy(name()).find(n);
+      if (pos != std::string::npos) {
+        return true;
+      }
+
+      for (auto var : m_props->getChildren("variant")) {
+          if (var->hasChild("name")) {
+              std::string variantName(var->getStringValue("name"));
+              boost::to_lower(variantName);
+              size_t pos = variantName.find(n);
+              if (pos != std::string::npos) {
+                  return true;
+              }
+          }
+      }
+    }
+
+    if ((filter_name == "text") || (filter_name == "description")) {
+        handled = true;
+      std::string n(aFilter->getStringValue());
+      boost::to_lower(n);
+      size_t pos = boost::to_lower_copy(description()).find(n);
+      if (pos != std::string::npos) {
+        return true;
+      }
+
+        for (auto var : m_props->getChildren("variant")) {
+            if (var->hasChild("description")) {
+                std::string variantDesc(var->getStringValue("description"));
+                boost::to_lower(variantDesc);
+                size_t pos = variantDesc.find(n);
+                if (pos != std::string::npos) {
+                    return true;
+                }
             }
         }
-        // substring search of name, description
-        else if (filter_name == "name") {
-          std::string n(c->getStringValue());
-          boost::to_lower(n);
-          size_t pos = boost::to_lower_copy(name()).find(n);
-          if (pos == std::string::npos) {
-            return false;
-          }
-        }
-        else if (filter_name == "description") {
-          std::string n(c->getStringValue());
-          boost::to_lower(n);
-          size_t pos = boost::to_lower_copy(description()).find(n);
-          if (pos == std::string::npos) {
-            return false;
-          }
-        }
-        else if (filter_name == "installed") {
-          if (isInstalled() != c->getBoolValue()) {
-            return false;
-          }
-        }
-        else
-          SG_LOG(SG_GENERAL, SG_WARN, "unknown filter term:" << filter_name);
-    } // of filter props iteration
+    }
 
-    return true;
+    if (!handled) {
+      SG_LOG(SG_GENERAL, SG_WARN, "unknown filter term:" << filter_name);
+    }
+
+    return false;
 }
 
 bool Package::isInstalled() const
@@ -169,7 +219,10 @@ std::string Package::qualifiedId() const
 
 std::string Package::qualifiedVariantId(const unsigned int variantIndex) const
 {
-    return m_catalog->id() + "." + variants()[variantIndex];
+    if (variantIndex >= m_variants.size()) {
+        throw sg_range_exception("invalid variant index " + std::to_string(variantIndex));
+    }
+    return m_catalog->id() + "." + m_variants[variantIndex];
 }
 
 std::string Package::md5() const
@@ -206,7 +259,7 @@ size_t Package::fileSizeBytes() const
 
 std::string Package::description() const
 {
-    return getLocalisedProp("description");
+    return getLocalisedProp("description", 0);
 }
 
 string_set Package::tags() const
@@ -258,9 +311,9 @@ string_list Package::downloadUrls() const
     return r;
 }
 
-std::string Package::getLocalisedProp(const std::string& aName) const
+std::string Package::getLocalisedProp(const std::string& aName, const unsigned int vIndex) const
 {
-    return getLocalisedString(m_props, aName.c_str());
+    return getLocalisedString(propsForVariant(vIndex, aName.c_str()), aName.c_str());
 }
 
 std::string Package::getLocalisedString(const SGPropertyNode* aRoot, const char* aName) const
@@ -312,14 +365,7 @@ PackageList Package::dependencies() const
 
 string_list Package::variants() const
 {
-    string_list result;
-    result.push_back(id());
-
-    BOOST_FOREACH(SGPropertyNode* var, m_props->getChildren("variant")) {
-        result.push_back(var->getStringValue("id"));
-    }
-
-    return result;
+    return m_variants;
 }
 
 std::string Package::nameForVariant(const std::string& vid) const
@@ -340,72 +386,78 @@ std::string Package::nameForVariant(const std::string& vid) const
 
 unsigned int Package::indexOfVariant(const std::string& vid) const
 {
-    if (vid == id()) {
-        return 0;
-    }
-
-    unsigned int result = 1;
-    for (SGPropertyNode* var : m_props->getChildren("variant")) {
-        if (var->getStringValue("id") == vid) {
-            return result;
+    // accept fully-qualified IDs here
+    std::string actualId = vid;
+    size_t lastDot = vid.rfind('.');
+    if (lastDot != std::string::npos) {
+        std::string catalogId = vid.substr(0, lastDot);
+        if (catalogId != catalog()->id()) {
+            throw sg_exception("Bad fully-qualified ID:" + vid + ", package mismatch" );
         }
-
-        result++;
+        actualId = vid.substr(lastDot + 1);
     }
 
-    throw sg_exception("Unknow variant " + vid + " in package " + id());
+    string_list::const_iterator it = std::find(m_variants.begin(), m_variants.end(), actualId);
+    if (it == m_variants.end()) {
+        throw sg_exception("Unknow variant " + vid + " in package " + id());
+    }
+
+    return std::distance(m_variants.begin(), it);
 }
 
 std::string Package::nameForVariant(const unsigned int vIndex) const
 {
-    if (vIndex == 0)
-        return name();
+    return propsForVariant(vIndex, "name")->getStringValue("name");
+}
+
+SGPropertyNode_ptr Package::propsForVariant(const unsigned int vIndex, const char* propName) const
+{
+    if (vIndex == 0) {
+        return m_props;
+    }
 
     // offset by minus one to allow for index 0 being the primary
     SGPropertyNode_ptr var = m_props->getChild("variant", vIndex - 1);
-    if (var)
-        return var->getStringValue("name");
+    if (var) {
+        if (!propName || var->hasChild(propName)) {
+            return var;
+        }
+
+        return m_props;
+    }
 
     throw sg_exception("Unknow variant in package " + id());
 }
 
-Package::ThumbnailVec Package::thumbnailsForVariant(unsigned int vIndex) const
+Package::PreviewVec Package::previewsForVariant(unsigned int vIndex) const
 {
-    if (vIndex == 0) {
-        return thumbnailsFromProps(m_props);
-    }
-
-    SGPropertyNode_ptr var = m_props->getChild("variant", vIndex - 1);
-    if (!var) {
-        throw sg_exception("Unknow variant in package " + id());
-    }
-
-    return thumbnailsFromProps(var);
+    SGPropertyNode_ptr var = propsForVariant(vIndex);
+    return previewsFromProps(var);
 }
 
-Package::Thumbnail::Type thumbnailTypeFromString(const std::string& s)
+Package::Preview::Type previewTypeFromString(const std::string& s)
 {
-    if (s == "exterior") return Package::Thumbnail::Type::EXTERIOR;
-    if (s == "interior") return Package::Thumbnail::Type::INTERIOR;
-    if (s == "panel") return Package::Thumbnail::Type::PANEL;
-    return Package::Thumbnail::Type::UNKNOWN;
+    if (s == "exterior") return Package::Preview::Type::EXTERIOR;
+    if (s == "interior") return Package::Preview::Type::INTERIOR;
+    if (s == "panel") return Package::Preview::Type::PANEL;
+    return Package::Preview::Type::UNKNOWN;
 }
 
-Package::Thumbnail::Thumbnail(const std::string& aUrl, const std::string& aPath, Type aType) :
+Package::Preview::Preview(const std::string& aUrl, const std::string& aPath, Type aType) :
     url(aUrl),
     path(aPath),
     type(aType)
 {
 }
 
-Package::ThumbnailVec Package::thumbnailsFromProps(const SGPropertyNode_ptr& ptr) const
+Package::PreviewVec Package::previewsFromProps(const SGPropertyNode_ptr& ptr) const
 {
-    ThumbnailVec result;
+    PreviewVec result;
 
-    for (auto thumbNode : ptr->getChildren("thumbnail")) {
-        Thumbnail t(thumbNode->getStringValue("url"),
+    for (auto thumbNode : ptr->getChildren("preview")) {
+        Preview t(thumbNode->getStringValue("url"),
                     thumbNode->getStringValue("path"),
-                    thumbnailTypeFromString(thumbNode->getStringValue("type")));
+                    previewTypeFromString(thumbNode->getStringValue("type")));
         result.push_back(t);
     }
 

simgear/package/Package.hxx

@@ -114,7 +114,7 @@ public:
      */
     std::string md5() const;
     
-    std::string getLocalisedProp(const std::string& aName) const;
+    std::string getLocalisedProp(const std::string& aName, const unsigned int vIndex = 0) const;
 
     unsigned int revision() const;
   
@@ -140,9 +140,9 @@ public:
     string_list thumbnails() const;
 
     /**
-     * information about a thumbnail
+     * information about a preview image
      */
-    struct Thumbnail {
+    struct Preview {
         enum class Type
         {
             UNKNOWN,
@@ -154,19 +154,19 @@ public:
             // actual value for GUIs?
         };
 
-        Thumbnail(const std::string& url, const std::string& path, Type ty = Type::UNKNOWN);
+        Preview(const std::string& url, const std::string& path, Type ty = Type::UNKNOWN);
 
         std::string url;
         std::string path;
         Type type = Type::UNKNOWN;
     };
 
-    typedef std::vector<Thumbnail> ThumbnailVec;
+    typedef std::vector<Preview> PreviewVec;
 
     /**
      * retrieve all the thumbnails for a variant
      */
-    ThumbnailVec thumbnailsForVariant(unsigned int vIndex) const;
+    PreviewVec previewsForVariant(unsigned int vIndex) const;
     
     /**
      * Packages we depend upon.
@@ -194,13 +194,16 @@ private:
 
     std::string getLocalisedString(const SGPropertyNode* aRoot, const char* aName) const;
 
-    ThumbnailVec thumbnailsFromProps(const SGPropertyNode_ptr& ptr) const;
+    PreviewVec previewsFromProps(const SGPropertyNode_ptr& ptr) const;
+
+    SGPropertyNode_ptr propsForVariant(const unsigned int vIndex, const char* propName = nullptr) const;
 
     SGPropertyNode_ptr m_props;
     std::string m_id;
     string_set m_tags;
     CatalogRef m_catalog;
-
+    string_list m_variants;
+    
     mutable function_list<InstallCallback> _install_cb;
 };
 

simgear/package/Root.cxx

@@ -477,7 +477,7 @@ void Root::installProgress(InstallRef aInstall, unsigned int aBytes, unsigned in
 
 void Root::startNext(InstallRef aCurrent)
 {
-    if (d->updateDeque.front() != aCurrent) {
+	if (d->updateDeque.empty() || (d->updateDeque.front() != aCurrent)) {
         SG_LOG(SG_GENERAL, SG_ALERT, "current install of package not head of the deque");
     } else {
         d->updateDeque.pop_front();

simgear/package/Root.hxx

@@ -19,7 +19,7 @@
 #define SG_PACKAGE_ROOT_HXX
 
 #include <vector>
-#include <memory> // for auto_ptr
+#include <memory> // for unique_ptr
 
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/package/Delegate.hxx>
@@ -161,7 +161,7 @@ private:
     
     class ThumbnailDownloader;
     class RootPrivate;
-    std::auto_ptr<RootPrivate> d;
+    std::unique_ptr<RootPrivate> d;
 };
   
 typedef SGSharedPtr<Root> RootRef;

simgear/package/catalogTest1/catalog-v2.xml

@@ -48,22 +48,22 @@
             <revision>10</revision>
         </depends>
 
-        <thumbnail>
+        <preview>
           <type>exterior</type>
           <path>thumb-exterior.png</path>
           <url>http://foo.bar.com/thumb-exterior.png</url>
-        </thumbnail>
+        </preview>
 
-        <thumbnail>
+        <preview>
           <type>panel</type>
           <path>thumb-panel.png</path>
           <url>http://foo.bar.com/thumb-panel.png</url>
-        </thumbnail>
+        </preview>
 
-        <thumbnail>
+        <preview>
           <path>thumb-something.png</path>
           <url>http://foo.bar.com/thumb-something.png</url>
-        </thumbnail>
+        </preview>
 
         <variant>
             <id>c172p-2d-panel</id>
@@ -74,34 +74,34 @@
             <id>c172p-floats</id>
             <name>C172 with floats</name>
 
-            <thumbnail>
+            <preview>
               <type>exterior</type>
               <path>thumb-exterior-floats.png</path>
               <url>http://foo.bar.com/thumb-exterior-floats.png</url>
-            </thumbnail>
+            </preview>
 
-            <thumbnail>
+            <preview>
               <type>panel</type>
               <path>thumb-panel.png</path>
               <url>http://foo.bar.com/thumb-panel.png</url>
-            </thumbnail>
+            </preview>
         </variant>
 
         <variant>
             <id>c172p-skis</id>
             <name>C172 with skis</name>
 
-            <thumbnail>
+            <preview>
               <type>exterior</type>
               <path>thumb-exterior-skis.png</path>
               <url>http://foo.bar.com/thumb-exterior-skis.png</url>
-            </thumbnail>
+            </preview>
 
-            <thumbnail>
+            <preview>
               <type>panel</type>
               <path>thumb-panel.png</path>
               <url>http://foo.bar.com/thumb-panel.png</url>
-            </thumbnail>
+            </preview>
         </variant>
 
         <md5>ec0e2ffdf98d6a5c05c77445e5447ff5</md5>
@@ -141,17 +141,17 @@
         <md5>a94ca5704f305b90767f40617d194ed6</md5>
         <url>http://localhost:2000/catalogTest1/b737.tar.gz</url>
 
-        <thumbnail>
+        <preview>
           <type>exterior</type>
           <path>thumb-exterior.png</path>
           <url>http://foo.bar.com/thumb-exterior.png</url>
-        </thumbnail>
+        </preview>
 
-        <thumbnail>
+        <preview>
           <type>panel</type>
           <path>thumb-panel.png</path>
           <url>http://foo.bar.com/thumb-panel.png</url>
-        </thumbnail>
+        </preview>
       </package>
 
 

simgear/package/catalogTest1/catalog.xml

@@ -20,15 +20,17 @@
         <url>http://localhost:2000/catalogTest1/alpha.zip</url>
 
         <dir>alpha</dir>
+
     </package>
 
     <package>
         <id>c172p</id>
         <name>Cessna 172-P</name>
         <dir>c172p</dir>
-        <description>A plane made by Cessna</description>
+        <description>A plane made by Cessna on Jupiter</description>
         <revision type="int">42</revision>
         <file-size-bytes type="int">860</file-size-bytes>
+        <author>Standard author</author>
 
         <tag>cessna</tag>
         <tag>ga</tag>
@@ -48,22 +50,22 @@
             <revision>10</revision>
         </depends>
 
-        <thumbnail>
+        <preview>
           <type>exterior</type>
           <path>thumb-exterior.png</path>
           <url>http://foo.bar.com/thumb-exterior.png</url>
-        </thumbnail>
+        </preview>
 
-        <thumbnail>
+        <preview>
           <type>panel</type>
           <path>thumb-panel.png</path>
           <url>http://foo.bar.com/thumb-panel.png</url>
-        </thumbnail>
+        </preview>
 
-        <thumbnail>
+        <preview>
           <path>thumb-something.png</path>
           <url>http://foo.bar.com/thumb-something.png</url>
-        </thumbnail>
+        </preview>
 
         <variant>
             <id>c172p-2d-panel</id>
@@ -73,40 +75,46 @@
         <variant>
             <id>c172p-floats</id>
             <name>C172 with floats</name>
+            <description>A plane with floats</description>
+            <author>Floats variant author</author>
 
-            <thumbnail>
+            <preview>
               <type>exterior</type>
               <path>thumb-exterior-floats.png</path>
               <url>http://foo.bar.com/thumb-exterior-floats.png</url>
-            </thumbnail>
+            </preview>
 
-            <thumbnail>
+            <preview>
               <type>panel</type>
               <path>thumb-panel.png</path>
               <url>http://foo.bar.com/thumb-panel.png</url>
-            </thumbnail>
+            </preview>
         </variant>
 
         <variant>
             <id>c172p-skis</id>
             <name>C172 with skis</name>
+            <description>A plane with skis</description>
 
-            <thumbnail>
+            <preview>
               <type>exterior</type>
               <path>thumb-exterior-skis.png</path>
               <url>http://foo.bar.com/thumb-exterior-skis.png</url>
-            </thumbnail>
+            </preview>
 
-            <thumbnail>
+            <preview>
               <type>panel</type>
               <path>thumb-panel.png</path>
               <url>http://foo.bar.com/thumb-panel.png</url>
-            </thumbnail>
+            </preview>
         </variant>
 
         <md5>ec0e2ffdf98d6a5c05c77445e5447ff5</md5>
         <url>http://localhost:2000/catalogTest1/c172p.zip</url>
 
+        <!-- legacy thumbnails also supported -->
+        <thumbnail>http://foo.bar.com/thumb-exterior.png</thumbnail>
+        <thumbnail-path>exterior.png</thumbnail-path>
     </package>
 
     <package>

simgear/props/AtomicChangeListener.hxx

@@ -26,7 +26,7 @@ public:
             (*itr)->addChangeListener(this);
     }
 private:
-    void valueChanged(SGPropertyNode* node);
+    void valueChanged(SGPropertyNode* node) override;
     virtual void valueChangedImplementation();
 
 };
@@ -53,10 +53,10 @@ public:
     }
     bool isDirty() { return _dirty; }
     bool isValid() { return _valid; }
-    void unregister_property(SGPropertyNode* node);
+    virtual void unregister_property(SGPropertyNode* node) override;
     static void fireChangeListeners();
 private:
-    virtual void valueChangedImplementation();
+    virtual void valueChangedImplementation() override;
     virtual void valuesChanged();
     bool _dirty;
     bool _valid;
@@ -90,7 +90,7 @@ public:
         if (initial)
             valuesChanged();
     }
-    virtual void valuesChanged()
+    virtual void valuesChanged() override
     {
         ExtendedPropertyAdapter<T, std::vector<SGPropertyNode*> > adaptor(_watched);
         T val = adaptor();

simgear/props/easing_functions_test.cxx

@@ -11,14 +11,10 @@
 #include <cmath>
 #include <iostream>
 
-#define VERIFY_CLOSE(a, b) \
-  if( std::fabs(a - b) > 1e-5 ) \
-  { \
-    std::cerr << "failed: line " << __LINE__ << ": "\
-              << a << " != " << b\
-              << std::endl; \
-    return 1; \
-  }
+#include <simgear/misc/test_macros.hxx>
+
+#define VERIFY_CLOSE(a, b) SG_CHECK_EQUAL_EP2((a), (b), 1e-5)
+
 
 int main(int argc, char* argv[])
 {

simgear/props/props.cxx

@@ -34,6 +34,7 @@ using std::cerr;
 # include <boost/range.hpp>
 # include <simgear/compiler.h>
 # include <simgear/debug/logstream.hxx>
+# include <simgear/sg_inlines.h>
 
 # include "PropertyInterpolationMgr.hxx"
 # include "vectorPropTemplates.hxx"
@@ -1099,7 +1100,7 @@ SGPropertyNode::addChildren( const std::string& name,
 }
 
 /**
- * Get a non-const child by index.
+ * Get a non-const child by position.
  */
 SGPropertyNode *
 SGPropertyNode::getChild (int position)
@@ -1112,7 +1113,7 @@ SGPropertyNode::getChild (int position)
 
 
 /**
- * Get a const child by index.
+ * Get a const child by position.
  */
 const SGPropertyNode *
 SGPropertyNode::getChild (int position) const
@@ -1123,6 +1124,16 @@ SGPropertyNode::getChild (int position) const
     return 0;
 }
 
+unsigned int SGPropertyNode::getPosition() const
+{
+    if (_parent == nullptr) {
+        return 0;
+    }
+
+    auto it = std::find(_parent->_children.begin(), _parent->_children.end(), this);
+    assert(it != _parent->_children.end());
+    return std::distance(_parent->_children.begin(), it);
+}
 
 /**
  * Get a non-const child by name and index, creating if necessary.
@@ -2482,6 +2493,11 @@ SGPropertyNode::eraseChild(simgear::PropertyList::iterator child)
 // Implementation of SGPropertyChangeListener.
 ////////////////////////////////////////////////////////////////////////
 
+SGPropertyChangeListener::SGPropertyChangeListener(bool recursive)
+{
+    SG_UNUSED(recursive); // for the moment, all listeners are recursive
+}
+
 SGPropertyChangeListener::~SGPropertyChangeListener ()
 {
   for (int i = static_cast<int>(_properties.size() - 1); i >= 0; i--)

simgear/props/props.hxx

@@ -735,6 +735,7 @@ public:
   virtual void childRemoved(SGPropertyNode * parent, SGPropertyNode * child);
 
 protected:
+    SGPropertyChangeListener(bool recursive = false);
   friend class SGPropertyNode;
   virtual void register_property (SGPropertyNode * node);
   virtual void unregister_property (SGPropertyNode * node);
@@ -847,6 +848,10 @@ public:
    */
   const SGPropertyNode * getParent () const { return _parent; }
 
+    /**
+     * Get node's position in parent (*NOT* index)
+     */
+    unsigned int getPosition() const;
 
   //
   // Children.

simgear/props/props_io.cxx

@@ -21,6 +21,7 @@
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/xml/easyxml.hxx>
 #include <simgear/misc/ResourceManager.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 #include "props.hxx"
 #include "props_io.hxx"
@@ -696,7 +697,7 @@ writeProperties (const SGPath &path, const SGPropertyNode * start_node,
   SGPath dpath(path);
   dpath.create_dir(0755);
 
-  ofstream output(path.local8BitStr().c_str());
+  sg_ofstream output(path);
   if (output.good()) {
     writeProperties(output, start_node, write_all, archive_flag);
   } else {

simgear/props/props_test.cxx

@@ -9,12 +9,16 @@
 
 #include <simgear/compiler.h>
 
+#include <memory>               // std::unique_ptr
 #include <iostream>
+#include <map>
 
 #include "props.hxx"
 #include "props_io.hxx"
 
+#include <simgear/misc/test_macros.hxx>
 #include <simgear/misc/sg_path.hxx>
+#include <simgear/misc/test_macros.hxx>
 
 using std::cout;
 using std::cerr;
@@ -300,18 +304,34 @@ test_property_nodes ()
   grandchild = child->getChild("bar", 3, true);
   grandchild->setDoubleValue(400);
 
+    SG_CHECK_EQUAL(grandchild->getPosition(), 3);
+
   child = root.getChild("hack", 0, true);
 
+    SG_CHECK_EQUAL(child->getPosition(), 1);
+
+
   grandchild = child->getChild("bar", 0, true);
   grandchild->setDoubleValue(100);
   grandchild = child->getChild("bar", 3, true);
   grandchild->setDoubleValue(200);
+
+    SG_CHECK_EQUAL(grandchild->getPosition(), 1);
+
+
   grandchild = child->getChild("bar", 1, true);
   grandchild->setDoubleValue(300);
   grandchild = child->getChild("bar", 2, true);
   grandchild->setDoubleValue(400);
+
+    SG_CHECK_EQUAL(grandchild->getPosition(), 3);
+
+
   dump_node(&root);
 
+    SG_CHECK_EQUAL(child->getPosition(), 1);
+    SG_CHECK_EQUAL(grandchild->getPosition(), 3);
+
   cout << "Trying path (expect /foo[0]/bar[0])" << endl;
   grandchild = root.getNode("/hack/../foo/./bar[0]");
   cout << "Path is " << grandchild->getPath() << endl;
@@ -329,6 +349,8 @@ test_property_nodes ()
     cerr << "** FAILED to create /a/b/c" << endl;
   dump_node(&root);
   cout << endl;
+
+
 }
 
 void test_addChild()
@@ -387,6 +409,540 @@ void test_addChild()
 }
 
 
+bool ensureNListeners(SGPropertyNode* node, int n)
+{
+    if (node->nListeners() != n) {
+        return false;
+    }
+
+    for (int c=0; c < node->nChildren(); ++c) {
+        if (!ensureNListeners(node->getChild(c), n)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+void defineSamplePropertyTree(SGPropertyNode_ptr root)
+{
+    root->setIntValue("position/body/a", 42);
+    root->setIntValue("position/body/c", 1);
+    root->setIntValue("position/body/d", 600);
+
+    root->setDoubleValue("velocity/body/x", 1.23);
+    root->setDoubleValue("velocity/body/y", 4.56);
+    root->setDoubleValue("velocity/body/z", 7.89);
+
+    root->setStringValue("settings/render/foo", "flightgear");
+    root->setStringValue("version", "10.3.19");
+
+    for (int i=0; i<4; ++i) {
+        root->setDoubleValue("controls/engine[" + std::to_string(i) + "]/throttle", 0.1 * i);
+        root->setBoolValue("controls/engine[" + std::to_string(i) + "]/starter", i % 2);
+        root->setDoubleValue("engine[" + std::to_string(i) + "]/rpm", 1000 * i);
+        root->setDoubleValue("engine[" + std::to_string(i) + "]/temp", 100 * i);
+    }
+
+    root->setDoubleValue("controls/doors/door[2]/position-norm", 0.5);
+}
+
+class TestListener : public SGPropertyChangeListener
+{
+public:
+    TestListener(SGPropertyNode* root, bool recursive = false) :
+        _root(root) {}
+
+    virtual void valueChanged(SGPropertyNode* node) override
+    {
+        std::cout << "saw value changed for:" << node->getPath() << std::endl;
+        valueChangeCount[node]++;
+    }
+
+    int checkValueChangeCount(const std::string& path) const
+    {
+        auto it = valueChangeCount.find(_root->getNode(path));
+        if (it == valueChangeCount.end()) {
+            return 0;
+        }
+
+        return it->second;
+    }
+
+    struct ParentChange
+    {
+        SGPropertyNode_ptr parent, child;
+    };
+
+    virtual void childAdded(SGPropertyNode * parent, SGPropertyNode * child) override
+    {
+        adds.push_back({parent, child});
+    }
+
+    virtual void childRemoved(SGPropertyNode * parent, SGPropertyNode * child) override
+    {
+        removes.push_back({parent, child});
+    }
+
+    std::vector<SGPropertyNode*> addedTo(SGPropertyNode* pr)
+    {
+        std::vector<SGPropertyNode*> result;
+        for (auto c : adds) {
+            if (c.parent == pr) {
+                result.push_back(c.child);
+            }
+        }
+        return result;
+    }
+
+    std::vector<SGPropertyNode*> removedFrom(SGPropertyNode* pr)
+    {
+        std::vector<SGPropertyNode*> result;
+        for (auto c : removes) {
+            if (c.parent == pr) {
+                result.push_back(c.child);
+            }
+        }
+        return result;
+    }
+
+    bool checkAdded(const std::string& pr, SGPropertyNode* n)
+    {
+        auto adds = addedTo(_root->getNode(pr));
+        return std::find(adds.begin(), adds.end(), n) != adds.end();
+    }
+
+    bool checkRemoved(const std::string& pr, SGPropertyNode* n)
+    {
+        auto removes = removedFrom(_root->getNode(pr));
+        return std::find(removes.begin(), removes.end(), n) != removes.end();
+    }
+
+    bool checkRemoved(SGPropertyNode* pr, SGPropertyNode* n)
+    {
+        auto removes = removedFrom(pr);
+        return std::find(removes.begin(), removes.end(), n) != removes.end();
+    }
+
+        void resetChangeCounts()
+        {
+            valueChangeCount.clear();
+            adds.clear();
+            removes.clear();
+        }
+private:
+    SGPropertyNode* _root;
+    std::map<SGPropertyNode*, unsigned int> valueChangeCount;
+
+    std::vector<ParentChange> adds;
+    std::vector<ParentChange> removes;
+
+};
+
+void testListener()
+{
+    SGPropertyNode_ptr tree(new SGPropertyNode);
+    defineSamplePropertyTree(tree);
+
+    // basic listen
+    {
+        TestListener l(tree.get());
+        tree->getNode("position/body/c")->addChangeListener(&l);
+        tree->getNode("velocity/body/z")->addChangeListener(&l);
+        tree->getNode("controls/engine[2]/starter")->addChangeListener(&l);
+
+        tree->setBoolValue("controls/engine[2]/starter", true);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("controls/engine[2]/starter"), 1);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/c"), 0);
+
+        tree->setIntValue("position/body/c", 123);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("controls/engine[2]/starter"), 1);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/c"), 1);
+
+        // verify that changing non-listened props doesn't affect anything
+        tree->setIntValue("position/body/a", 19);
+        tree->setBoolValue("controls/engine[1]/starter", true);
+
+        SG_CHECK_EQUAL(l.checkValueChangeCount("controls/engine[2]/starter"), 1);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/c"), 1);
+
+    }
+
+    // initial value set
+    {
+        TestListener l(tree.get());
+        tree->getNode("velocity/body/y")->addChangeListener(&l, true);
+        tree->getNode("controls/engine[2]/starter")->addChangeListener(&l, true);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("controls/engine[2]/starter"), 1);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("velocity/body/y"), 1);
+    }
+
+    // delete listener while listening, should be fine
+    {
+        std::unique_ptr<TestListener> l( new TestListener(tree.get()));
+        tree->getNode("position/body/c")->addChangeListener(l.get());
+        tree->getNode("velocity/body/z")->addChangeListener(l.get());
+        tree->getNode("controls/engine[2]/starter")->addChangeListener(l.get());
+
+        SG_CHECK_EQUAL(tree->getNode("position/body/c")->nListeners(), 1);
+        SG_CHECK_EQUAL(
+          tree->getNode("controls/engine[2]/starter")->nListeners(), 1);
+
+        l.reset();
+
+        SG_CHECK_EQUAL(tree->getNode("position/body/c")->nListeners(), 0);
+        SG_CHECK_EQUAL(
+          tree->getNode("controls/engine[2]/starter")->nListeners(), 0);
+
+        tree->getNode("position/body/c")->setIntValue(49.0);
+        tree->getNode("controls/engine[2]/starter")->setBoolValue(true);
+    }
+
+
+    // add/remove of child listen
+    {
+        TestListener l(tree.get());
+        tree->getNode("controls")->addChangeListener(&l);
+        tree->getNode("velocity/body")->addChangeListener(&l);
+
+        tree->setDoubleValue("controls/pitch", 0.5);
+        SG_VERIFY(l.checkAdded("controls", tree->getNode("controls/pitch")));
+
+        tree->setIntValue("controls/yaw", 12);
+
+        SG_VERIFY(l.checkAdded("controls", tree->getNode("controls/yaw")));
+
+        // branch as well as leaf nodes should work the same
+        tree->setBoolValue("controls/gears/gear[1]/locked", true);
+        SG_VERIFY(l.checkAdded("controls", tree->getNode("controls/gears")));
+
+        SGPropertyNode_ptr rm = tree->getNode("velocity/body/z");
+        tree->getNode("velocity/body")->removeChild("z");
+        SG_VERIFY(l.checkRemoved("velocity/body", rm.get()));
+
+        SG_CHECK_EQUAL(
+          l.checkRemoved("velocity/body", tree->getNode("velocity/body/x")),
+          false);
+    }
+
+    tree = new SGPropertyNode;
+    defineSamplePropertyTree(tree);
+
+    // ensure basic listenter is not recursive
+    // disabled for now, since all listeners are recurisve
+#if 0
+    {
+        TestListener l(tree.get(), false /* not recursive */);
+        tree->getNode("position/body")->addChangeListener(&l);
+        tree->getNode("controls/")->addChangeListener(&l);
+
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 0);
+
+        tree->setIntValue("position/body/a", 111);
+        tree->setIntValue("position/body/z", 43);
+
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 0);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/z"), 0);
+
+        tree->getNode("position/body/new", true);
+        SG_VERIFY(l.checkAdded("position/body",
+                               tree->getNode("position/body/new")));
+    }
+#endif
+
+    tree = new SGPropertyNode;
+    defineSamplePropertyTree(tree);
+    // recursive listen
+    {
+        TestListener l(tree.get(), true /* recursive */);
+        tree->getNode("position/body")->addChangeListener(&l);
+        tree->getNode("controls/")->addChangeListener(&l);
+
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 0);
+
+        tree->setIntValue("position/body/a", 111);
+        tree->setIntValue("position/body/z", 43);
+
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/z"), 1);
+
+        SG_VERIFY(l.checkAdded("position/body",
+                               tree->getNode("position/body/z")));
+
+
+        tree->setBoolValue("controls/engine[3]/starter", true);
+        SG_CHECK_EQUAL(l.checkValueChangeCount("controls/engine[3]/starter"), 1);
+
+        tree->setBoolValue("controls/engines[1]/fuel-cutoff", true);
+        SG_VERIFY(
+          l.checkAdded("controls/engines[1]",
+                       tree->getNode("controls/engines[1]/fuel-cutoff")));
+
+        SG_CHECK_EQUAL(
+          l.checkValueChangeCount("controls/engines[1]/fuel-cutoff"), 1);
+
+        tree->setDoubleValue("controls/doors/door[2]/position-norm", 0.5);
+        SG_CHECK_EQUAL(
+          l.checkValueChangeCount("controls/doors/door[2]/position-norm"), 1);
+
+        SGPropertyNode_ptr door2Node = tree->getNode("controls/doors/door[2]");
+        SGPropertyNode_ptr door2PosNode = tree->getNode("controls/doors/door[2]/position-norm");
+
+        tree->getNode("controls/doors")->removeChild(door2Node);
+
+        SG_VERIFY(l.checkRemoved("controls/doors", door2Node));
+
+        // default is not recurse for children
+        SG_CHECK_EQUAL(l.checkRemoved(door2Node, door2PosNode), false);
+
+        // adds *are* seen recursively
+        tree->setStringValue("controls/lights/light[3]/foo/state", "dim");
+        SG_VERIFY(
+          l.checkAdded("controls/lights/light[3]/foo",
+                       tree->getNode("controls/lights/light[3]/foo/state")));
+
+
+        // remove a listener
+        tree->getNode("controls")->removeChangeListener(&l);
+
+        // removing listener does not trigger remove notifications
+        SG_VERIFY(!l.checkRemoved("controls",
+                                  tree->getNode("controls/engine[3]")));
+        SG_VERIFY(!l.checkRemoved("controls/engine[3]",
+                                  tree->getNode("controls/engine[3]/starter")));
+
+        tree->setBoolValue("controls/engines[1]/fuel-cutoff", false);
+        tree->setBoolValue("controls/engines[9]/fuel-cutoff", true);
+
+        // values should be unchanged
+        SG_CHECK_EQUAL(
+          l.checkValueChangeCount("controls/engines[1]/fuel-cutoff"), 1);
+        SG_CHECK_EQUAL(
+          l.checkValueChangeCount("controls/engines[9]/fuel-cutoff"), 0);
+
+        // ensure additional calls to fireChildrenRecursive don't cause multiple adds
+
+        // disabled for now since we don't add recursive listeners to sub-trees
+      //  SG_VERIFY(ensureNListeners(tree->getNode("position/body"), 1));
+        SG_VERIFY(ensureNListeners(tree->getNode("controls"), 0));
+
+        tree->getNode("position/body")->fireCreatedRecursive();
+        // disabled for now since we don't add recursive listeners to sub-trees
+        //SG_VERIFY(ensureNListeners(tree->getNode("position/body"), 1));
+    }
+
+}
+
+void testAliasedListeners()
+{
+    SGPropertyNode_ptr tree(new SGPropertyNode);
+    defineSamplePropertyTree(tree);
+    TestListener l(tree.get());
+
+    tree->getNode("position/world/x", true)->alias(tree->getNode("position/body/a"));
+    tree->getNode("position/earth", true)->alias(tree->getNode("position/body"));
+
+    tree->getNode("position/world/x")->addChangeListener(&l);
+    tree->getNode("position/earth")->addChangeListener(&l);
+
+    tree->setIntValue("position/body/a", 99);
+    SG_CHECK_EQUAL(tree->getIntValue("position/world/x"), 99);
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/world/x"), 1);
+
+    tree->setIntValue("position/world/x", 101);
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 101);
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/world/x"), 2);
+}
+
+class TiedPropertyDonor
+{
+
+public:
+
+    int someMember = 100;
+
+    const char* getWrappedA() const { return wrappedMember.c_str(); }
+    void setWrappedA(const char* s) { wrappedMember = std::string(s); }
+
+    std::string wrappedMember;
+    double wrappedB = 1.23;
+
+    double getWrappedB() const { return wrappedB; }
+};
+
+void tiedPropertiesTest()
+{
+    TiedPropertyDonor donor;
+
+    SGPropertyNode_ptr tree(new SGPropertyNode);
+    defineSamplePropertyTree(tree);
+
+    tree->setDoubleValue("position/body/mass", 145.0);
+
+    tree->tie("position/body/a", SGRawValuePointer<int>(&donor.someMember));
+    tree->tie("settings/render/foo", SGRawValueMethods<TiedPropertyDonor, const char*>(donor, &TiedPropertyDonor::getWrappedA, &TiedPropertyDonor::setWrappedA));
+    tree->tie("position/body/mass", SGRawValueMethods<TiedPropertyDonor, double>(donor, &TiedPropertyDonor::getWrappedB, nullptr));
+
+    // tie sets current values of the property onto the setter
+    SG_CHECK_EQUAL(tree->getStringValue("settings/render/foo"),
+                   std::string("flightgear"));
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 42);
+
+    // but can't write to this one!
+    SG_CHECK_EQUAL(tree->getDoubleValue("position/body/mass"), 1.23);
+
+    donor.setWrappedA("hello world");
+    donor.someMember = 13;
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 13);
+    SG_CHECK_EQUAL(tree->getStringValue("settings/render/foo"),
+                   std::string("hello world"));
+
+    donor.someMember = 45;
+    donor.wrappedMember = "apples";
+    donor.wrappedB =  5000.0;
+
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 45);
+    SG_CHECK_EQUAL(tree->getStringValue("settings/render/foo"),
+                   std::string("apples"));
+    SG_CHECK_EQUAL(tree->getDoubleValue("position/body/mass"), 5000.0);
+
+    // set value externally
+    tree->setIntValue("position/body/a", 99);
+    SG_CHECK_EQUAL(donor.someMember, 99);
+
+    tree->setStringValue("settings/render/foo", "lemons");
+    SG_CHECK_EQUAL(donor.wrappedMember, "lemons");
+
+    // set read-only
+    bool success = tree->setDoubleValue("position/body/mass", 10000.0);
+    SG_VERIFY(!success);
+    SG_CHECK_EQUAL(donor.wrappedB, 5000.0); // must not have changed
+
+    // un-tieing
+
+    tree->untie("position/body/a");
+    tree->untie("position/body/mass");
+
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 99);
+    SG_CHECK_EQUAL(tree->getDoubleValue("position/body/mass"), 5000.0);
+}
+
+void tiedPropertiesListeners()
+{
+
+    TiedPropertyDonor donor;
+
+    SGPropertyNode_ptr tree(new SGPropertyNode);
+    defineSamplePropertyTree(tree);
+
+    tree->tie("position/body/a", SGRawValuePointer<int>(&donor.someMember));
+    tree->tie("settings/render/foo", SGRawValueMethods<TiedPropertyDonor, const char*>(donor, &TiedPropertyDonor::getWrappedA, &TiedPropertyDonor::setWrappedA));
+    tree->tie("position/body/mass", SGRawValueMethods<TiedPropertyDonor, double>(donor, &TiedPropertyDonor::getWrappedB, nullptr));
+
+    // tie sets current values of the property onto the setter
+    SG_CHECK_EQUAL(tree->getStringValue("settings/render/foo"),
+                   std::string("flightgear"));
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 42);
+
+    TestListener l(tree.get());
+
+    tree->getNode("position/body/a")->addChangeListener(&l);
+    tree->getNode("position/body/mass")->addChangeListener(&l);
+    tree->getNode("settings/render/foo")->addChangeListener(&l);
+
+    // firstly test changes via setXXX API and verify they work
+    tree->setIntValue("position/body/a", 99);
+    SG_CHECK_EQUAL(donor.someMember, 99);
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1);
+
+    tree->setDoubleValue("position/body/mass", -123.0);
+    SG_CHECK_EQUAL(donor.wrappedB, 1.23); // read-only!
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/mass"), 0);
+
+    tree->setStringValue("settings/render/foo", "thingA");
+    tree->setStringValue("settings/render/foo", "thingB");
+    SG_CHECK_EQUAL(donor.wrappedMember, std::string("thingB"));
+    SG_CHECK_EQUAL(l.checkValueChangeCount("settings/render/foo"), 2);
+
+    // now change values from inside the donor and verify it doesn't fire
+    // the listener
+
+    donor.wrappedMember = "pineapples";
+    SG_CHECK_EQUAL(tree->getStringValue("settings/render/foo"),
+                   std::string("pineapples"));
+    SG_CHECK_EQUAL(l.checkValueChangeCount("settings/render/foo"), 2);
+
+    donor.someMember = 256;
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 256);
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1);
+
+    // now fire value changed
+    l.resetChangeCounts();
+    donor.wrappedB = 4.000000001;
+
+
+    tree->getNode("position/body/a")->fireValueChanged();
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1);
+    SG_CHECK_EQUAL(tree->getIntValue("position/body/a"), 256);
+
+    l.resetChangeCounts();
+
+    tree->getNode("position/body/a")->fireValueChanged();
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1);
+
+    tree->setDoubleValue("position/body/mass", 4.000000001);
+    // Not changed
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/mass"), 0);
+
+    donor.someMember = 970;
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 1); // not changed
+    tree->getNode("position/body/a")->fireValueChanged();
+    SG_CHECK_EQUAL(l.checkValueChangeCount("position/body/a"), 2); // changed
+
+
+    donor.wrappedMember = "pears";
+    // Not changed
+    SG_CHECK_EQUAL(l.checkValueChangeCount("settings/render/foo"), 0);
+    tree->getNode("settings/render/foo")->fireValueChanged();
+    // Changed
+    SG_CHECK_EQUAL(l.checkValueChangeCount("settings/render/foo"), 1);
+
+}
+
+
+void testDeleterListener()
+{
+    SGPropertyNode_ptr tree = new SGPropertyNode;
+    defineSamplePropertyTree(tree);
+
+
+    // recursive listen
+    {
+        TestListener* l = new TestListener(tree.get(), true /* recursive */);
+        tree->getNode("position/body")->addChangeListener(l);
+        tree->getNode("controls/")->addChangeListener(l);
+
+        SG_CHECK_EQUAL(l->checkValueChangeCount("position/body/a"), 0);
+
+        // create additional children
+        tree->setFloatValue("position/body/sub/theta", 0.1234);
+
+        SG_VERIFY(l->checkAdded("position/body/sub",
+                                tree->getNode("position/body/sub/theta")));
+
+        SG_CHECK_EQUAL(l->checkValueChangeCount("position/body/sub/theta"), 1);
+
+        delete l;
+
+        tree->setFloatValue("position/body/sub/theta", 99.123);
+        tree->setIntValue("position/body/a", 33);
+
+        // verify no listeners at all
+        SG_VERIFY(ensureNListeners(tree, 0));
+    }
+
+}
+
 int main (int ac, char ** av)
 {
   test_value();
@@ -394,11 +950,11 @@ int main (int ac, char ** av)
 
   for (int i = 1; i < ac; i++) {
     try {
-      cout << "Reading " << av[i] << endl;
+    //  cout << "Reading " << av[i] << endl;
       SGPropertyNode root;
         readProperties(SGPath::fromLocal8Bit(av[i]), &root);
       writeProperties(cout, &root, true);
-      cout << endl;
+   //   cout << endl;
     } catch (std::string &message) {
       cout << "Aborted with " << message << endl;
     }
@@ -406,5 +962,13 @@ int main (int ac, char ** av)
 
   test_addChild();
 
+    testListener();
+    tiedPropertiesTest();
+    tiedPropertiesListeners();
+    testDeleterListener();
+
+    // disable test for the moment
+   // testAliasedListeners();
+
   return 0;
 }

simgear/scene/material/mat.cxx

@@ -49,7 +49,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/threads/SGGuard.hxx>
 
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>

simgear/scene/material/matlib.cxx

@@ -1,4 +1,4 @@
-// materialmgr.cxx -- class to handle material properties
+// matlib.cxx -- class to handle material properties
 //
 // Written by Curtis Olson, started May 1998.
 //
@@ -36,7 +36,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
 #include <simgear/props/condition.hxx>

simgear/scene/material/matlib.hxx

@@ -69,7 +69,7 @@ class SGMaterialLib : public SGReferenced
 
 private:
     class MatLibPrivate;
-    std::auto_ptr<MatLibPrivate> d;
+    std::unique_ptr<MatLibPrivate> d;
     
     // associative array of materials
     typedef std::vector< SGSharedPtr<SGMaterial> > material_list;    

simgear/scene/material/matmodel.cxx

@@ -39,7 +39,7 @@
 #include <simgear/debug/logstream.hxx>
 #include <simgear/math/sg_random.h>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/scene/model/modellib.hxx>
 
 #include "matmodel.hxx"

simgear/scene/material/parseBlendFunc_test.cxx

@@ -1,43 +1,27 @@
 #include <simgear/compiler.h>
+#include <simgear/misc/test_macros.hxx>
 
 #include "parseBlendFunc.hxx"
 #include <simgear/props/props.hxx>
 #include <osg/BlendFunc>
 
-#include <iostream>
 
-#define COMPARE(a, b) \
-  if( (a) != (b) ) \
-  { \
-    std::cerr << "line " << __LINE__ << ": failed: "\
-              << #a << " != " << #b << std::endl; \
-    return 1; \
-  }
-
-#define VERIFY(a) \
-  if( !(a) ) \
-  { \
-    std::cerr << "line " << __LINE__ << ": failed: "\
-              << #a << std::endl; \
-    return 1; \
-  }
-    
 int main (int ac, char ** av)
 {
   osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
 
   // default blendfunc
-  VERIFY( simgear::parseBlendFunc(ss) );
+  SG_VERIFY( simgear::parseBlendFunc(ss) );
 
   osg::BlendFunc* bf = dynamic_cast<osg::BlendFunc*>(
     ss->getAttribute(osg::StateAttribute::BLENDFUNC)
   );
 
-  VERIFY( bf );
-  COMPARE(bf->getSource(),      osg::BlendFunc::SRC_ALPHA);
-  COMPARE(bf->getDestination(), osg::BlendFunc::ONE_MINUS_SRC_ALPHA);
-  COMPARE(bf->getSource(),      bf->getSourceAlpha());
-  COMPARE(bf->getDestination(), bf->getDestinationAlpha());
+  SG_VERIFY( bf );
+  SG_CHECK_EQUAL(bf->getSource(),      osg::BlendFunc::SRC_ALPHA);
+  SG_CHECK_EQUAL(bf->getDestination(), osg::BlendFunc::ONE_MINUS_SRC_ALPHA);
+  SG_CHECK_EQUAL(bf->getSource(),      bf->getSourceAlpha());
+  SG_CHECK_EQUAL(bf->getDestination(), bf->getDestinationAlpha());
 
   // now set some values
   SGPropertyNode_ptr src = new SGPropertyNode,
@@ -46,17 +30,17 @@ int main (int ac, char ** av)
   src->setStringValue("src-alpha");
   dest->setStringValue("constant-color");
 
-  VERIFY( simgear::parseBlendFunc(ss, src, dest) );
+  SG_VERIFY( simgear::parseBlendFunc(ss, src, dest) );
 
   bf = dynamic_cast<osg::BlendFunc*>(
       ss->getAttribute(osg::StateAttribute::BLENDFUNC)
   );
 
-  VERIFY( bf );
-  COMPARE(bf->getSource(),      osg::BlendFunc::SRC_ALPHA);
-  COMPARE(bf->getDestination(), osg::BlendFunc::CONSTANT_COLOR);
-  COMPARE(bf->getSource(),      bf->getSourceAlpha());
-  COMPARE(bf->getDestination(), bf->getDestinationAlpha());
+  SG_VERIFY( bf );
+  SG_CHECK_EQUAL(bf->getSource(),      osg::BlendFunc::SRC_ALPHA);
+  SG_CHECK_EQUAL(bf->getDestination(), osg::BlendFunc::CONSTANT_COLOR);
+  SG_CHECK_EQUAL(bf->getSource(),      bf->getSourceAlpha());
+  SG_CHECK_EQUAL(bf->getDestination(), bf->getDestinationAlpha());
 
   std::cout << "all tests passed successfully!" << std::endl;
   return 0;

simgear/scene/model/SGMaterialAnimation.cxx

@@ -450,7 +450,8 @@ SGMaterialAnimation::createAnimationGroup(osg::Group& parent)
         stateSet->setTextureAttribute(0, texture2D,
 				      osg::StateAttribute::OVERRIDE);
         stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
-        if (texture2D->getImage()->isImageTranslucent()) {
+		osg::ref_ptr<osg::Image> textureImage = texture2D->getImage();
+        if (textureImage && textureImage->isImageTranslucent()) {
           stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
           stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
         }