From bea5973e0cffe983584484ad29f900044b003093 Mon Sep 17 00:00:00 2001
From: Andreas Mair <amair.sob@googlemail.com>
Date: Wed, 21 Oct 2015 08:30:33 +0200
Subject: [PATCH] Filter out this extra data and leading zeroes in "track" and
 "disc" tags.

---
 src/tag/TagHandler.cxx | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/tag/TagHandler.cxx b/src/tag/TagHandler.cxx
index 9bbaae36a..bbd30877a 100644
--- a/src/tag/TagHandler.cxx
+++ b/src/tag/TagHandler.cxx
@@ -22,6 +22,9 @@
 #include "TagBuilder.hxx"
 #include "util/ASCII.hxx"
 
+#include <stdio.h>
+#include <stdlib.h>
+
 static void
 add_tag_duration(SongTime duration, void *ctx)
 {
@@ -35,7 +38,17 @@ add_tag_tag(TagType type, const char *value, void *ctx)
 {
 	TagBuilder &tag = *(TagBuilder *)ctx;
 
-	tag.AddItem(type, value);
+	if (type == TAG_TRACK || type == TAG_DISC) {
+		/* filter out this extra data and leading zeroes */
+		char *end;
+		unsigned n = strtoul(value, &end, 10);
+		if (value != end) {
+			char s[21];
+			if (snprintf(s, 21, "%u", n) >= 0)
+				tag.AddItem(type, s);
+		}
+	} else
+		tag.AddItem(type, value);
 }
 
 const struct tag_handler add_tag_handler = {