ID3v2_CommentsFrame* ID3v2_Tag::findCommentFrame() const
{
ID3v2_FrameList* list = frameList(wxT("COMM"));
ID3v2_CommentsFrame* frame;
if( list )
{
// prefer comments without description, start searching with the last (mostly the newest)
ID3v2_FrameList::Node* node = list->GetLast();
while( node )
{
frame = (ID3v2_CommentsFrame*)node->GetData();
if( frame->description().IsEmpty()
&& !frame->text().IsEmpty() )
{
return frame;
}
node = node->GetPrevious();
}
// try to return empty frames without description
list->GetLast();
while( node )
{
frame = (ID3v2_CommentsFrame*)node->GetData();
if( frame->description().IsEmpty() )
{
return frame;
}
node = node->GetPrevious();
}
/*
if( !forWrite ) // do not overwrite eg. MusicMatch comments
{
// okay, no comment so far, check all comment frames and return the first non-empty comment
node = list->GetFirst();
while( node )
{
frame = (ID3v2_CommentsFrame*)node->GetData();
if( !frame->text().IsEmpty() )
{
return frame;
}
node = node->GetNext();
}
// just use the first frame
node = list->GetFirst();
if( node )
{
return (ID3v2_CommentsFrame*)node->GetData();
}
}*/
}
return NULL;
}
void ID3v2_Tag::setTextFrame(const wxString &id, const wxString &value)
{
if(value.IsEmpty()) {
removeFrames(id);
return;
}
//if(!d->frameListMap[id].isEmpty())
// d->frameListMap[id].front()->setText(value);
ID3v2_FrameList* it = frameList(id);
if( it )
{
ID3v2_FrameList::Node* l = it->GetFirst();
if( l )
{
l->GetData()->setText(value);
}
}
else
{
const SjStringType encoding = m_factory->defaultTextEncoding();
SjByteVector idBv;
idBv.appendString(id, SJ_LATIN1);
ID3v2_TextIdentificationFrame *f = new ID3v2_TextIdentificationFrame(idBv, encoding);
addFrame(f);
f->setText(value);
}
}
wxString ID3v2_Tag::simpleFrame(const wxString& frameId) const
{
ID3v2_FrameList* list = frameList(frameId);
if( list )
{
ID3v2_FrameList::Node* node = list->GetFirst();
if( node )
{
return node->GetData()->toString();
}
}
return wxEmptyString;
}
void ID3v2_Tag::removeFrames(const wxString &id)
{
/*FrameList l = d->frameListMap[id];
for(FrameList::Iterator it = l.begin(); it != l.end(); ++it)
removeFrame(*it, true);*/
ID3v2_FrameList* l = frameList(id);
if( l )
{
ID3v2_FrameList::Node* first;
while( (first=l->GetFirst()) != NULL )
{
removeFrame(first->GetData(), true);
}
}
}
ID3v2_Tag::~ID3v2_Tag()
{
if( m_extendedHeader) delete m_extendedHeader;
if( m_footer ) delete m_footer;
// delete all frame list contents, the frame list itself is destroyed automatically
ID3v2_FrameList::Node* node = m_frameList.GetFirst();
for( ; node; node = node->GetNext() )
{
delete node->GetData();
}
// delete all frame hash values, the hash itself is destroyed automatically
SjHashIterator iterator;
ID3v2_FrameList* frameList;
wxString frameId;
while( (frameList=(ID3v2_FrameList*)m_frameListMap.Iterate(iterator, frameId)) )
{
delete frameList;
}
}
SjByteVector ID3v2_Tag::render()
{
// We need to render the "tag data" first so that we have to correct size to
// render in the tag's header. The "tag data" -- everything that is included
// in ID3v2::Header::tagSize() -- includes the extended header, frames and
// padding, but does not include the tag's header or footer.
SjByteVector tagData;
// TODO: Render the extended header.
// Loop through the frames rendering them and adding them to the tagData.
//for(FrameList::Iterator it = d->frameList.begin(); it != d->frameList.end(); it++)
for ( ID3v2_FrameList::Node *node = m_frameList.GetFirst(); node; node = node->GetNext() )
{
ID3v2_Frame* it = node->GetData();
if(!it->header()->tagAlterPreservation())
tagData.append(it->render());
}
// Compute the amount of padding, and append that to tagData.
SjUint paddingSize = 0;
SjUint originalSize = m_header.tagSize();
if(tagData.size() < originalSize)
paddingSize = originalSize - tagData.size();
else
paddingSize = 1024;
tagData.append(SjByteVector(paddingSize, char(0)));
// Set the tag size.
m_header.setTagSize(tagData.size());
// TODO: This should eventually include d->footer->render().
return m_header.render() + tagData;
}
ID3v2_UserTextIdentificationFrame *find(ID3v2_Tag *tag, const wxString &description) // static
{
const ID3v2_FrameList* l = tag->frameList(wxT("TXXX"));
/*for(FrameList::Iterator it = l.begin(); it != l.end(); ++it) {
UserTextIdentificationFrame *f = dynamic_cast<UserTextIdentificationFrame *>(*it);
if(f && f->description() == description)
return f;
}
*/
if( l )
{
for ( ID3v2_FrameList::Node *node = l->GetFirst(); node; node = node->GetNext() )
{
ID3v2_UserTextIdentificationFrame *f = (ID3v2_UserTextIdentificationFrame*)node->GetData();
if( f && f->description() == description )
return f;
}
}
return 0;
}