From 1e3b346a524c681a9457a2721dfd94c56199b6e5 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 12 Sep 2003 08:45:12 +0000
Subject: [PATCH] From Sebastien Kuntz, added support for external refernces to
 vertex/fragment program files.

---
 src/osgPlugins/osg/FragmentProgram.cpp | 19 +++++++++++++++++++
 src/osgPlugins/osg/VertexProgram.cpp   | 20 ++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/src/osgPlugins/osg/FragmentProgram.cpp b/src/osgPlugins/osg/FragmentProgram.cpp
index 97145ab26..46e83495e 100644
--- a/src/osgPlugins/osg/FragmentProgram.cpp
+++ b/src/osgPlugins/osg/FragmentProgram.cpp
@@ -45,6 +45,25 @@ bool FragmentProgram_readLocalData(Object& obj, Input& fr)
 	}
         fragmentProgram.setFragmentProgram(code);
     }
+
+    if( fr.matchSequence("file %s")) {
+	    std::string filename = fr[1].getStr();
+	    fr += 2;
+	    iteratorAdvanced = true;
+
+	    ifstream vfstream( filename.c_str() );
+
+	    if( vfstream ) {
+		    ostringstream vstream;
+		    char ch;
+
+		    /* xxx better way to transfer a ifstream to a string?? */
+		    while( vfstream.get(ch)) vstream.put(ch);
+
+		    fragmentProgram.setFragmentProgram( vstream.str() );
+	    }
+    }
+    
     return iteratorAdvanced;
 }
 
diff --git a/src/osgPlugins/osg/VertexProgram.cpp b/src/osgPlugins/osg/VertexProgram.cpp
index 6c4695ca8..1f4487239 100644
--- a/src/osgPlugins/osg/VertexProgram.cpp
+++ b/src/osgPlugins/osg/VertexProgram.cpp
@@ -45,6 +45,26 @@ bool VertexProgram_readLocalData(Object& obj, Input& fr)
 	}
         vertexProgram.setVertexProgram(code);
     }
+
+    if( fr.matchSequence("file %s")) {
+      std::string filename = fr[1].getStr();
+                                                                                
+      fr+=2;
+      iteratorAdvanced = true;
+                                                                                
+      ifstream vfstream( filename.c_str() );
+                                                                                
+      if( vfstream ) {
+        ostringstream vstream;
+        char ch;
+      
+	/* xxx better way to transfer a ifstream to a string?? */
+        while( vfstream.get(ch)) vstream.put(ch);
+                                                                                
+        vertexProgram.setVertexProgram( vstream.str() );
+      }
+    }
+
     return iteratorAdvanced;
 }