Add support to bpy.library module for relative paths.

source/blender/python/api2_2x/Library.c

@@ -515,11 +515,12 @@ static BlendHandle *open_library( char *filename, char *longFilename )
  */
 
 static PyObject *CreatePyObject_LibData( int idtype, int kind,
-		void *name, void *iter, char *filename )
+		void *name, void *iter, char *filename, int rel )
 {
 	BPy_LibraryData *seq = PyObject_NEW( BPy_LibraryData, &LibraryData_Type);
 	seq->iter = iter;		/* the name list (for iterators) */
 	seq->type = idtype;		/* the Blender ID type */
+	seq->rel =  rel;		/* relative or absolute library */
 	seq->kind = kind;		/* used by Blender Objects */
 	seq->name = name; 		/* object name, iterator name list, or NULL */
 							/* save the library name */
@@ -560,7 +561,8 @@ static PyObject *lib_link_or_append( BPy_LibraryData *self, PyObject * value,
 		/* otherwise, create a pseudo object ready for appending or linking */
 
 		return CreatePyObject_LibData( ID_OB, mode, 
-				BLI_strdupn( name, strlen( name ) ), NULL, self->filename );
+				BLI_strdupn( name, strlen( name ) ), NULL, self->filename,
+				self->rel );
 	}
 }
 
@@ -586,6 +588,9 @@ PyObject *LibraryData_importLibData( BPy_LibraryData *self, char *name,
 	if( !openlib )
 		return NULL;
 
+	/* fix any /foo/../foo/ */
+	BLI_cleanup_file(NULL, longFilename); 
+
 	/* find all datablocks for the specified type */
 	names = BLO_blendhandle_get_datablock_names ( openlib, self->type ); 
 
@@ -616,15 +621,15 @@ PyObject *LibraryData_importLibData( BPy_LibraryData *self, char *name,
 	}
 
 	/* import from the libary */
-	BLO_script_library_append( &openlib, longFilename, name, self->type, mode,
-			scene );
+	BLO_script_library_append( &openlib, longFilename, name, self->type, 
+			mode | self->rel, scene );
 
 	/*
 	 * locate the library.  If this is an append, make the data local.  If it
 	 * is link, we need the library for later
 	 */
 	for( lib = G.main->library.first; lib; lib = lib->id.next )
-		if( strcmp( longFilename, lib->name ) == 0 ) {
+		if( strcmp( longFilename, lib->filename ) == 0) {
 			if( mode != FILE_LINK ) {
 				all_local( lib, 1 );
 				/* important we unset, otherwise these object wont
@@ -717,7 +722,7 @@ static PyObject *LibraryData_getIter( BPy_LibraryData * self )
 
 	/* build an iterator object for the name list */
 	return CreatePyObject_LibData( self->type, OTHER, names,
-			names, self->filename );
+			names, self->filename, self->rel );
 }
 
 /* Return next name. */
@@ -942,7 +947,7 @@ PyTypeObject LibraryData_Type = {
 static PyObject *LibraryData_CreatePyObject( BPy_Library *self, void *mode )
 {
 	return CreatePyObject_LibData( GET_INT_FROM_POINTER(mode), OTHER, NULL, NULL,
-			self->filename );
+			self->filename, self->rel);
 }
 
 /************************************************************
@@ -1066,20 +1071,27 @@ static PyGetSetDef Library_getseters[] = {
  * actually accessed later. 
  */
 
-static PyObject *M_Library_Load(PyObject *self, PyObject * value)
+static PyObject *M_Library_Load(PyObject *self, PyObject * args)
 {
-	char *filename = PyString_AsString(value);
+	char *filename = NULL;
+	PyObject *relative = NULL;
 	BPy_Library *lib;
 
-	if( !filename )
+	if( !PyArg_ParseTuple( args, "s|O", &filename, &relative ) )
 		return EXPP_ReturnPyObjError( PyExc_TypeError,
-			"expected a string" );
+			"expected strings and optional bool as arguments." );
 
 	/* try to create a new object */
 	lib = (BPy_Library *)PyObject_NEW( BPy_Library, &Library_Type );
 	if( !lib )
 		return NULL;
 
+	/* save relative flag value */
+	if( relative && PyObject_IsTrue(relative) )
+		lib->rel = FILE_STRINGCODE;
+	else
+		lib->rel = 0;
+
 	/* assign the library filename for future use, then return */
 	BLI_strncpy( lib->filename, filename, sizeof(lib->filename) );
 
@@ -1087,7 +1099,7 @@ static PyObject *M_Library_Load(PyObject *self, PyObject * value)
 }
 
 static struct PyMethodDef M_Library_methods[] = {
-	{"load", (PyCFunction)M_Library_Load, METH_O,
+	{"load", (PyCFunction)M_Library_Load, METH_VARARGS,
 	"(string) - declare a .blend file for use as a library"},
 	{NULL, NULL, 0, NULL}
 };

source/blender/python/api2_2x/doc/LibData.py

@@ -26,13 +26,16 @@ Example::
 	me.materials[0] = mat                             # assign linked material to mesh
 """
 
-def load(filename):
+def load(filename,relative=False):
   """
   Select an existing .blend file for use as a library.  Unlike the 
   Library module, multiple libraries can be defined at the same time.  
   
   @type filename: string
   @param filename: The filename of a Blender file. Filenames starting with "//" will be loaded relative to the blend file's location.
+  @type relative: int
+  @param relative: Convert relative paths to absolute paths (default).
+Setting this parameter to True will leave paths relative.
   @rtype: Library
   @return: return a L{Library} object.
   """