- Collada Exporter id naming scheme once again revised to exclude any potential invalid chars

- Collada Exporter outputs proper URLs for texture file names now.
- Updated Collada Loader to understand and convert texture file name URLs

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1191 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/ColladaLoader.cpp

@@ -1398,6 +1398,24 @@ void ColladaLoader::ConvertPath (aiString& ss)
 		memmove(ss.data,ss.data+7,ss.length);
 		ss.data[ss.length] = '\0';
 	}
+
+  // find and convert all %xyz special chars
+  char* out = ss.data;
+  for( const char* it = ss.data; it != ss.data + ss.length; /**/ )
+  {
+    if( *it == '%' )
+    {
+      size_t nbr = strtoul16( ++it, &it);
+      *out++ = nbr;
+    } else
+    {
+      *out++ = *it++;
+    }
+  }
+
+  // adjust length and terminator of the shortened string
+  *out = 0;
+  ss.length = (ptrdiff_t) (out - ss.data);
 }
 
 // ------------------------------------------------------------------------------------------------