#! /bin/sh /usr/share/dpatch/dpatch-run
## 10_id3v1_zeropadding.dpatch by  <sm17hs@gmail.com>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Use zero padding instead of space padding for ID3V1 fields
## DP: (as requested by http://id3lib.sourceforge.net/id3/id3v1.html).

@DPATCH@
diff -urNad libid3tag-0.15.1b~/render.c libid3tag-0.15.1b/render.c
--- libid3tag-0.15.1b~/render.c	2004-01-23 10:41:32.000000000 +0100
+++ libid3tag-0.15.1b/render.c	2009-11-08 13:41:57.570279022 +0100
@@ -198,3 +198,23 @@
 
   return id3_latin1_serialize(ptr, padded, 0);
 }
+
+/*
+ * NAME:	render->zeropaddedstring()
+ * DESCRIPTION:	render a zero-padded string using latin1 encoding
+ */
+id3_length_t id3_render_zeropaddedstring(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
+				     id3_length_t length)
+{
+  id3_length_t size;
+
+  /* latin1 encoding only (this is used for ID3v1 fields) */
+
+  assert(length <= 30);
+  
+  size = id3_latin1_serialize(ptr, ucs4, 0);
+  memset(*ptr, 0, length - size);
+  *ptr += length - size;
+
+  return size;
+}
diff -urNad libid3tag-0.15.1b~/render.h libid3tag-0.15.1b/render.h
--- libid3tag-0.15.1b~/render.h	2004-01-23 10:41:32.000000000 +0100
+++ libid3tag-0.15.1b/render.h	2009-11-08 13:42:23.162281992 +0100
@@ -36,5 +36,7 @@
 
 id3_length_t id3_render_paddedstring(id3_byte_t **, id3_ucs4_t const *,
 				     id3_length_t);
+id3_length_t id3_render_zeropaddedstring(id3_byte_t **, id3_ucs4_t const *,
+				     id3_length_t);
 
 # endif
diff -urNad libid3tag-0.15.1b~/tag.c libid3tag-0.15.1b/tag.c
--- libid3tag-0.15.1b~/tag.c	2004-02-17 03:04:10.000000000 +0100
+++ libid3tag-0.15.1b/tag.c	2009-11-08 13:43:02.646282262 +0100
@@ -685,7 +685,7 @@
       string = id3_field_getstrings(&frame->fields[1], 0);
   }
 
-  id3_render_paddedstring(buffer, string, length);
+  id3_render_zeropaddedstring(buffer, string, length);
 }
 
 /*