From 2718058173d70559ff9c8a428f661b635f137d13 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 2 Nov 2004 11:10:44 +0000
Subject: [PATCH] Removed the font cache from the FreeType plugin, moving the
 support across to osgDB::Registry.

---
 examples/osgarchive/osgarchive.cpp          | 60 ++++++++++++++++++++-
 src/osgPlugins/freetype/FreeTypeLibrary.cpp |  7 +++
 src/osgPlugins/freetype/FreeTypeLibrary.h   |  5 ++
 src/osgText/Font.cpp                        |  2 +-
 4 files changed, 71 insertions(+), 3 deletions(-)

diff --git a/examples/osgarchive/osgarchive.cpp b/examples/osgarchive/osgarchive.cpp
index 2c4fa6996..78a2d82db 100644
--- a/examples/osgarchive/osgarchive.cpp
+++ b/examples/osgarchive/osgarchive.cpp
@@ -16,11 +16,67 @@
 #include <osgDB/ReadFile>
 #include <osgDB/WriteFile>
 
-#include <iostream>
+
+  #include <iostream>
+    #include <streambuf>
+    #include <locale>
+    #include <cstdio>
+
+template<typename _CharT, typename _Traits = std::char_traits<_CharT> >
+class proxy_basic_streambuf : public std::basic_streambuf<_CharT, _Traits>
+{
+   public:
+   
+      typedef _CharT 					char_type;
+      typedef _Traits 					traits_type;
+      typedef typename traits_type::int_type 		int_type;
+      typedef typename traits_type::pos_type 		pos_type;
+      typedef typename traits_type::off_type 		off_type;
+  
+      proxy_basic_streambuf(unsigned int numChars):
+        _numChars(numChars) {}
+   
+      /// Destructor deallocates no buffer space.
+      virtual ~proxy_basic_streambuf()  {}
+
+      unsigned int _numChars;
+
+    protected:
+
+      virtual int_type overflow (int_type __c = traits_type::eof())
+      {
+        if (_numChars==0)
+        {
+            putchar('E');
+            return traits_type::eof();
+        }
+      
+ 	 if (__c == traits_type::eof()) return '\n'; traits_type::not_eof(__c);
+         //putchar('');
+         --_numChars;
+         return putchar(__c);
+      }
+};
+
+typedef proxy_basic_streambuf<char> proxy_streambuf;
 
 int main( int argc, char **argv )
 {
+    std::ifstream fin("GNUmakefile");
+    std::istream& ins = fin;
 
+    proxy_streambuf mystreambuf(100);
+    std::cout.rdbuf(&mystreambuf);
+    
+    while (!fin.eof())
+    {
+        std::cout.put(fin.get());
+    }
+    std::cout<<"Exiting normally "<<std::endl;
+    
+    std::cout.rdbuf(0);
+
+/*
     // use an ArgumentParser object to manage the program arguments.
     osg::ArgumentParser arguments(&argc,argv);
     
@@ -151,7 +207,7 @@ int main( int argc, char **argv )
 
     }
     
-    
+*/    
     return 0;
 }
 
diff --git a/src/osgPlugins/freetype/FreeTypeLibrary.cpp b/src/osgPlugins/freetype/FreeTypeLibrary.cpp
index 8701453b7..483f5ac0b 100644
--- a/src/osgPlugins/freetype/FreeTypeLibrary.cpp
+++ b/src/osgPlugins/freetype/FreeTypeLibrary.cpp
@@ -26,6 +26,7 @@ FreeTypeLibrary::FreeTypeLibrary()
 
 FreeTypeLibrary::~FreeTypeLibrary()
 {
+#ifdef USE_LOCAL_CACHE
     // need to remove the implementations from the Fonts here
     // just in case the Fonts continue to have external references
     // to them, otherwise they will try to point to an object thats
@@ -38,6 +39,7 @@ FreeTypeLibrary::~FreeTypeLibrary()
         osgText::Font* font = itr->second.get();
         font->setImplementation(0);
     }
+#endif
     
     FT_Done_FreeType( _ftlibrary);
 }
@@ -51,8 +53,10 @@ FreeTypeLibrary* FreeTypeLibrary::instance()
 osgText::Font* FreeTypeLibrary::getFont(const std::string& fontfile,unsigned int index)
 {
 
+#ifdef USE_LOCAL_CACHE
     FontMap::iterator itr = _fontMap.find(fontfile);
     if (itr!=_fontMap.end()) return itr->second.get();
+#endif
 
     FT_Face face;      /* handle to face object */
     FT_Error error = FT_New_Face( _ftlibrary, fontfile.c_str(), index, &face );
@@ -71,7 +75,10 @@ osgText::Font* FreeTypeLibrary::getFont(const std::string& fontfile,unsigned int
     
     FreeTypeFont* fontImp = new FreeTypeFont(fontfile,face);
     osgText::Font* font = new osgText::Font(fontImp);
+
+#ifdef USE_LOCAL_CACHE
     _fontMap[fontfile]=font;
+#endif
     
     return font;
 
diff --git a/src/osgPlugins/freetype/FreeTypeLibrary.h b/src/osgPlugins/freetype/FreeTypeLibrary.h
index 8c6363048..26253159a 100644
--- a/src/osgPlugins/freetype/FreeTypeLibrary.h
+++ b/src/osgPlugins/freetype/FreeTypeLibrary.h
@@ -17,6 +17,8 @@
 #include "FreeTypeFont.h"
 #include <osgText/Font>
 
+//#define USE_LOCAL_CACHE
+
 class FreeTypeLibrary
 {
 public:
@@ -39,7 +41,10 @@ protected:
 
 
     FT_Library  _ftlibrary;
+
+#ifdef USE_LOCAL_CACHE
     FontMap     _fontMap;
+#endif
 
 };
 
diff --git a/src/osgText/Font.cpp b/src/osgText/Font.cpp
index 0f0d262d7..a9b1ad9e8 100644
--- a/src/osgText/Font.cpp
+++ b/src/osgText/Font.cpp
@@ -67,7 +67,7 @@ osgText::Font* osgText::readFontFile(const std::string& filename)
     std::string foundFile = findFontFile(filename);
     if (foundFile.empty()) return 0;
 
-    osg::Object* object = osgDB::readObjectFile(foundFile);
+    osg::Object* object = osgDB::readObjectFile(foundFile, osgDB::Registry::CACHE_OBJECTS);
 
     // if the object is a font then return it.
     osgText::Font* font = dynamic_cast<osgText::Font*>(object);