Initial revision

src/osg/OSG.cpp

@@ -0,0 +1,254 @@
+#ifndef WIN32
+#include <unistd.h>
+#include <dlfcn.h>
+#else
+#include <Io.h>
+#include <Windows.h>
+#include <Winbase.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "osg/Notify"
+#include "osg/OSG"
+#include "osg/Node"
+#include "osg/Geode"
+#include "osg/Group"
+#include "osg/Input"
+#include "osg/Output"
+#include "osg/Registry"
+
+using namespace osg;
+
+#ifdef WIN32
+char *PathDelimitor = ";";
+static const char *s_default_file_path = ".;D:/OpenSceneGraph/Data;D:/OpenSceneGraph/Data/Images;D:/OpenSceneGraph/lib";
+//static char *s_filePath = (char *)s_default_file_path;
+static char *s_filePath = ".;";
+#else
+char *PathDelimitor = ":";
+static const char *s_default_file_path = ".:";
+#ifdef __sgi
+static const char *s_default_dso_path = "/usr/lib32/osgPlugins/";
+#else
+static const char *s_default_dso_path = "/usr/lib/osgPlugins/";
+#endif
+static char *s_filePath = ".:";
+//static char *s_filePath = s_default_file_path;
+#endif
+
+
+#include <vector>
+#include <algorithm>
+
+using std::vector;
+using std::find_if;
+
+void osg::Init( void )
+{
+    char *ptr;
+    if( (ptr = getenv( "OSGFILEPATH" ))  )
+    {
+        notify(DEBUG) << "osg::Init("<<ptr<<")"<<endl;
+        SetFilePath( ptr );
+    }
+    else
+    {
+        notify(DEBUG) << "osg::Init(NULL)"<<endl;
+    }
+}
+
+
+void osg::SetFilePath( const char *_path )
+{
+    char buff[1024];
+
+    notify(DEBUG) << "In osg::SetFilePath("<<_path<<")"<<endl;
+
+    buff[0] = 0;
+
+/*    notify(DEBUG) << "filePath " << s_filePath << endl;
+    notify(DEBUG) << "defPath  " << s_default_file_path << endl;
+    notify(DEBUG) << "&filePath " << &s_filePath << endl;
+    notify(DEBUG) << "&defPath  " << &s_default_file_path << endl;
+*/
+      if( s_filePath != s_default_file_path )
+      {
+          strcpy( buff, s_filePath );
+//          delete s_filePath;
+      }
+//    if (strcmp(s_filePath, s_default_file_path) != 0)
+//    {
+//        strcpy( buff, s_filePath );
+//        delete s_filePath;
+//    }
+
+    strcat( buff, PathDelimitor );
+    strcat( buff, _path );
+
+    s_filePath = strdup( buff );
+
+    notify(DEBUG) << "Out osg::SetFilePath("<<_path<<")"<<endl;
+}
+
+
+static char *FindFileInPath( const char *_file, const char * filePath )
+{
+    char pathbuff[1024];
+    char *tptr, *tmppath;
+    char *path = 0L;
+
+    notify(DEBUG) << "FindFileInPath() : trying " << _file << " ...\n";
+#ifdef WIN32
+    if( _access( _file, 4 ) == 0 ) return (char *)_file;
+#else
+    if( access( _file, F_OK ) == 0 ) return (char *)_file;
+#endif
+
+    tptr    = strdup( filePath );
+    tmppath = strtok(  tptr, PathDelimitor );
+
+    do
+    {
+        sprintf( pathbuff, "%s/%s", tmppath, _file );
+    notify(DEBUG) << "FindFileInPath() : trying " << pathbuff << " ...\n";
+#ifdef WIN32
+        if( _access( pathbuff, 4 ) == 0 ) break;
+#else
+        if( access( pathbuff, F_OK ) == 0 ) break;
+#endif
+    } while( (tmppath = strtok( 0, PathDelimitor )) );
+
+    if( tmppath != (char *)0L )
+        path = strdup( pathbuff );
+
+    ::free(tptr);
+
+    notify( DEBUG ) << "FindFileInPath() : returning " << path << "\n";
+
+    return path;
+}
+
+
+char *osg::FindFile( const char *file )
+{
+    return FindFileInPath( file, s_filePath );
+}
+
+/*
+
+Order of precedence for 
+
+  ./                  
+  OSG_LD_LIBRARY_PATH 
+  s_default_dso_path
+  LD_LIBRARY*_PATH
+
+ * DO NOT USE PATH or OSGFILEPATH
+ */
+
+char *osg::findDSO( const char *name )
+{
+    char path[1024];
+    char *ptr;
+
+    strcpy( path, "./" );
+
+    if((ptr = getenv( "OSG_LD_LIBRARY_PATH" )))
+    {
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+
+    strcat( path, PathDelimitor );
+    strcat( path, s_default_dso_path );
+
+#ifdef __sgi
+
+// bloody mess see rld(1) man page
+#   if (_MIPS_SIM == _MIPS_SIM_ABI32)
+
+    if( (ptr = getenv( "LD_LIBRARY_PATH" )))
+    {
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+
+#   elif (_MIPS_SIM == _MIPS_SIM_NABI32)
+
+    if( !(ptr = getenv( "LD_LIBRARYN32_PATH" )))
+        ptr = getenv( "LD_LIBRARY_PATH" );
+
+    if( ptr )
+    {
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+
+#   elif (_MIPS_SIM == _MIPS_SIM_ABI64)
+
+    if( !(ptr = getenv( "LD_LIBRARYN32_PATH" )))
+        ptr = getenv( "LD_LIBRARY_PATH" );
+
+    if( ptr )
+    {
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+#   endif
+
+#else
+
+#if 0 // DO NOT USE PATH or OSGFILEPATH
+#	ifdef WIN32
+    if ((ptr = getenv( "PATH" ))) 
+    {
+        notify(DEBUG) << "PATH = "<<ptr<<endl;
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+#	else
+    if( (ptr = getenv( "LD_LIBRARY_PATH" )))
+    {
+        strcat( path, PathDelimitor );
+        strcat( path, ptr );
+    }
+#endif
+#endif
+
+#ifndef WIN32
+
+//     #ifdef __sgi
+//     strcat( path, PathDelimitor );
+//     strcat( path, "/usr/lib32/osgPlugins" );
+//     #else
+//     strcat( path, PathDelimitor );
+//     strcat( path, "/usr/lib/osgPlugins" );
+//     #endif
+
+#endif
+
+    strcat( path ,PathDelimitor );
+    strcat( path, s_filePath );
+
+    char* fileFound = NULL;
+    fileFound = FindFileInPath( name , path );
+    if (fileFound) return fileFound;
+    
+    // now try prepending the filename with "osgPlugins/"
+    char* prependosgPlugins = new char[strlen(name)+12];
+    strcpy(prependosgPlugins,"osgPlugins/");
+    strcat(prependosgPlugins,name);
+    
+    fileFound = FindFileInPath( prependosgPlugins , path );    
+    
+    delete prependosgPlugins;
+    
+    return fileFound;
+#endif
+
+    return FindFileInPath( name, path );
+}
+
+