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Strip tag if empty

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Stephen F. Booth 2013-11-29 10:50:58 -05:00
parent 733b537c63
commit dad73ebfc5
1 changed files with 36 additions and 16 deletions
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52
taglib/dsf/dsffile.cpp
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@ -116,28 +116,48 @@ bool DSF::File::save()
// Three things must be updated: the file size, the tag data, and the metadata offset
ByteVector tagData = d->tag->render();
long long newMetadataOffset = d->metadataOffset ? d->metadataOffset : d->fileSize;
long long metadataLocation = d->metadataOffset ? d->metadataOffset : d->fileSize;
long long newFileSize = metadataLocation + tagData.size();
long long newMetadataOffset = tagData.size() ? metadataLocation : 0;
long long oldTagSize = d->fileSize - metadataLocation;
if(d->tag->isEmpty()) {
long long newFileSize = newMetadataOffset;
// Update the file size
if(d->fileSize != newFileSize) {
insert(ByteVector::fromUInt64LE(newFileSize), 12, 8);
d->fileSize = newFileSize;
// Update the file size
if(d->fileSize != newFileSize) {
insert(ByteVector::fromUInt64LE(newFileSize), 12, 8);
d->fileSize = newFileSize;
}
// Update the metadata offset
if(d->metadataOffset != newMetadataOffset) {
insert(ByteVector::fromUInt64LE(newMetadataOffset), 20, 8);
d->metadataOffset = newMetadataOffset;
}
// Delete the old tag
truncate(newMetadataOffset);
}
else {
ByteVector tagData = d->tag->render();
// Update the metadata offset
if(d->metadataOffset != newMetadataOffset) {
insert(ByteVector::fromUInt64LE(newMetadataOffset), 20, 8);
d->metadataOffset = newMetadataOffset;
long long newFileSize = newMetadataOffset + tagData.size();
long long oldTagSize = d->fileSize - newMetadataOffset;
// Update the file size
if(d->fileSize != newFileSize) {
insert(ByteVector::fromUInt64LE(newFileSize), 12, 8);
d->fileSize = newFileSize;
}
// Update the metadata offset
if(d->metadataOffset != newMetadataOffset) {
insert(ByteVector::fromUInt64LE(newMetadataOffset), 20, 8);
d->metadataOffset = newMetadataOffset;
}
// Delete the old tag and write the new one
insert(tagData, newMetadataOffset, oldTagSize);
}
// Delete the old tag and write the new one
insert(tagData, metadataLocation, oldTagSize);
return true;
}