Add a possibility to delete a subset of ID3 frames.

* NEWS: Document changes to --delete.
* doc/idest.texi: Likewise.
* src/cmdline.opt: --delete takes optional argument.
-d is a shorthand for it.
* src/idop.c (del_tags): Delete only certain frames, if
a frame list is given.

1 files changed, 17 insertions, 1 deletions

diff --git a/src/idop.c b/src/idop.c
index c953836..79f9491 100644
--- a/src/idop.c
+++ b/src/idop.c
@@ -165,3 +165,19 @@ del_tags(const char *name)
 		abort(); /* FIXME */
-	id3_tag_clearframes(tag);
+	if (ed_list) {
+		gl_list_iterator_t itr;
+		const void *p;
+		
+		itr = gl_list_iterator(ed_list);
+		while (gl_list_iterator_next(&itr, &p, NULL)) {
+			const struct ed_item *item = p;
+			struct id3_frame *frame;
+			
+			while (frame = id3_tag_findframe(tag, item->id, 0)) {
+				id3_tag_detachframe(tag, frame);
+				id3_frame_delete(frame);
+			}
+		}
+		gl_list_iterator_free(&itr);
+	} else
+		id3_tag_clearframes(tag);
 	safe_id3_file_update_and_close(file);