From 6cc989eb5570d998ac3f3a8fb1b2375946146e8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Lalinsk=C3=BD?= <lalinsky@gmail.com>
Date: Sat, 1 Dec 2007 10:08:43 +0000
Subject: [PATCH] Fix saving of ID3v1 tags to TrueAudio files with removed
 ID3v2 tags.

git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@743541 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 taglib/trueaudio/trueaudiofile.cpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/taglib/trueaudio/trueaudiofile.cpp b/taglib/trueaudio/trueaudiofile.cpp
index 18b7a911..adbb6a44 100644
--- a/taglib/trueaudio/trueaudiofile.cpp
+++ b/taglib/trueaudio/trueaudiofile.cpp
@@ -133,22 +133,28 @@ bool TrueAudio::File::save()
 
   // Update ID3v2 tag
 
-  if(d->ID3v2Tag) {
+  if(d->ID3v2Tag && !d->ID3v2Tag->isEmpty()) {
     if(!d->hasID3v2) {
       d->ID3v2Location = 0;
       d->ID3v2OriginalSize = 0;
     }
-    insert(d->ID3v2Tag->render(), d->ID3v2Location, d->ID3v2OriginalSize);
+    ByteVector data = d->ID3v2Tag->render();
+    insert(data, d->ID3v2Location, d->ID3v2OriginalSize);
+    d->ID3v1Location -= d->ID3v2OriginalSize - data.size();
+    d->ID3v2OriginalSize = data.size();
     d->hasID3v2 = true;
   }
   else if(d->hasID3v2) {
     removeBlock(d->ID3v2Location, d->ID3v2OriginalSize);
+    d->ID3v1Location -= d->ID3v2OriginalSize;
+    d->ID3v2Location = -1;
+    d->ID3v2OriginalSize = 0; 
     d->hasID3v2 = false;
   }
 
   // Update ID3v1 tag
 
-  if(d->ID3v1Tag) {
+  if(d->ID3v1Tag && !d->ID3v1Tag->isEmpty()) {
     if(!d->hasID3v1) {
       seek(0, End);
       d->ID3v1Location = tell();
@@ -160,6 +166,7 @@ bool TrueAudio::File::save()
   }
   else if(d->hasID3v1) {
     removeBlock(d->ID3v1Location, 128);
+    d->ID3v1Location = -1;
     d->hasID3v1 = false;
   }