- BKE_idcode_iter_step() - function to step over all ID codes.

- BLO_blendhandle_get_datablock_names() now takes an arg for the total items in the list, saves the caller counting.

source/blender/blenkernel/BKE_idcode.h

@@ -76,4 +76,12 @@ int BKE_idcode_is_linkable(int code);
  */
 int BKE_idcode_is_valid(int code);
 
+/**
+ * Return an ID code and steps the index forward 1.
+ *
+ * @param index, start as 0.
+ * @return the code, 0 when all codes have been returned.
+ */
+int BKE_idcode_iter_step(int *index);
+
 #endif

source/blender/blenkernel/intern/idcode.c

@@ -133,3 +133,8 @@ const char *BKE_idcode_to_name_plural(int code)
 	
 	return idt?idt->plural:NULL;
 }
+
+int BKE_idcode_iter_step(int *index)
+{
+	return (*index < nidtypes) ? idtypes[(*index)++].code : 0;
+}

source/blender/blenloader/BLO_readfile.h

@@ -146,13 +146,15 @@ BLO_blendhandle_from_memory(
  * 
  * @param bh The blendhandle to access.
  * @param ofblocktype The type of names to get.
+ * @param totnames The length of the returned list.
  * @return A BLI_linklist of strings. The string links
  * should be freed with malloc.
  */
 	struct LinkNode*
 BLO_blendhandle_get_datablock_names(
 	BlendHandle *bh, 
-	int ofblocktype);
+	int ofblocktype,
+	int *totnames);
 
 /**
  * Gets the previews of all the datablocks in a file

source/blender/blenloader/intern/readblenentry.c

@@ -123,21 +123,24 @@ void BLO_blendhandle_print_sizes(BlendHandle *bh, void *fp)
 	fprintf(fp, "]\n");
 }
 
-LinkNode *BLO_blendhandle_get_datablock_names(BlendHandle *bh, int ofblocktype) 
+LinkNode *BLO_blendhandle_get_datablock_names(BlendHandle *bh, int ofblocktype, int *tot_names)
 {
 	FileData *fd= (FileData*) bh;
 	LinkNode *names= NULL;
 	BHead *bhead;
+	int tot= 0;
 
 	for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
 		if (bhead->code==ofblocktype) {
 			char *idname= bhead_id_name(fd, bhead);
 
 			BLI_linklist_prepend(&names, strdup(idname+2));
+			tot++;
 		} else if (bhead->code==ENDB)
 			break;
 	}
 
+	*tot_names= tot;
 	return names;
 }
 

source/blender/editors/space_file/filelist.c

@@ -997,16 +997,15 @@ void filelist_from_library(struct FileList* filelist)
 	previews = NULL;
 	if (idcode) {
 		previews= BLO_blendhandle_get_previews(filelist->libfiledata, idcode);
-		names= BLO_blendhandle_get_datablock_names(filelist->libfiledata, idcode);
+		names= BLO_blendhandle_get_datablock_names(filelist->libfiledata, idcode, &nnames);
 		/* ugh, no rewind, need to reopen */
 		BLO_blendhandle_close(filelist->libfiledata);
 		filelist->libfiledata= BLO_blendhandle_from_file(dir);
 		
 	} else {
 		names= BLO_blendhandle_get_linkable_groups(filelist->libfiledata);
-	}
-	
 		nnames= BLI_linklist_length(names);
+	}
 
 	filelist->numfiles= nnames + 1;
 	filelist->filelist= malloc(filelist->numfiles * sizeof(*filelist->filelist));

source/gameengine/Converter/KX_BlenderSceneConverter.cpp

@@ -985,7 +985,8 @@ bool KX_BlenderSceneConverter::LinkBlendFile(BlendHandle *bpy_openlib, const cha
 	/* here appending/linking starts */
 	main_tmp = BLO_library_append_begin(C, &bpy_openlib, (char *)path);
 
-	names = BLO_blendhandle_get_datablock_names( bpy_openlib, idcode);
+	int totnames_dummy;
+	names = BLO_blendhandle_get_datablock_names( bpy_openlib, idcode, &totnames_dummy);
 	
 	int i=0;
 	LinkNode *n= names;