void FrameFactory::rebuildAggregateFrames(ID3v2::Tag *tag) const
{
if(tag->header()->majorVersion() < 4 &&
tag->frameList("TDRC").size() == 1 &&
tag->frameList("TDAT").size() == 1)
{
TextIdentificationFrame *tdrc =
static_cast<TextIdentificationFrame *>(tag->frameList("TDRC").front());
UnknownFrame *tdat = static_cast<UnknownFrame *>(tag->frameList("TDAT").front());
if(tdrc->fieldList().size() == 1 &&
tdrc->fieldList().front().size() == 4 &&
tdat->data().size() >= 5)
{
String date(tdat->data().mid(1), String::Type(tdat->data()[0]));
if(date.length() == 4) {
tdrc->setText(tdrc->toString() + '-' + date.substr(2, 2) + '-' + date.substr(0, 2));
if(tag->frameList("TIME").size() == 1) {
UnknownFrame *timeframe = static_cast<UnknownFrame *>(tag->frameList("TIME").front());
if(timeframe->data().size() >= 5) {
String time(timeframe->data().mid(1), String::Type(timeframe->data()[0]));
if(time.length() == 4) {
tdrc->setText(tdrc->toString() + 'T' + time.substr(0, 2) + ':' + time.substr(2, 2));
}
}
}
}
}
}
}
String ID3v2::Tag::genre() const
{
// TODO: In the next major version (TagLib 2.0) a list of multiple genres
// should be separated by " / " instead of " ". For the moment to keep
// the behavior the same as released versions it is being left with " ".
if(d->frameListMap["TCON"].isEmpty() ||
!dynamic_cast<TextIdentificationFrame *>(d->frameListMap["TCON"].front()))
{
return String::null;
}
// ID3v2.4 lists genres as the fields in its frames field list. If the field
// is simply a number it can be assumed that it is an ID3v1 genre number.
// Here was assume that if an ID3v1 string is present that it should be
// appended to the genre string. Multiple fields will be appended as the
// string is built.
TextIdentificationFrame *f = static_cast<TextIdentificationFrame *>(
d->frameListMap["TCON"].front());
StringList fields = f->fieldList();
StringList genres;
for(StringList::Iterator it = fields.begin(); it != fields.end(); ++it) {
if((*it).isEmpty())
continue;
bool isNumber = true;
for(String::ConstIterator charIt = (*it).begin();
isNumber && charIt != (*it).end();
++charIt)
{
isNumber = *charIt >= '0' && *charIt <= '9';
}
if(isNumber) {
int number = (*it).toInt();
if(number >= 0 && number <= 255)
*it = ID3v1::genre(number);
}
if(std::find(genres.begin(), genres.end(), *it) == genres.end())
genres.append(*it);
}
return genres.toString();
}
String ID3v2::Tag::genre() const
{
// TODO: In the next major version (TagLib 2.0) a list of multiple genres
// should be separated by " / " instead of " ". For the moment to keep
// the behavior the same as released versions it is being left with " ".
if(!d->frameListMap["TCON"].isEmpty() &&
dynamic_cast<TextIdentificationFrame *>(d->frameListMap["TCON"].front()))
{
Frame *frame = d->frameListMap["TCON"].front();
// ID3v2.4 lists genres as the fields in its frames field list. If the field
// is simply a number it can be assumed that it is an ID3v1 genre number.
// Here was assume that if an ID3v1 string is present that it should be
// appended to the genre string. Multiple fields will be appended as the
// string is built.
if(d->header.majorVersion() == 4) {
TextIdentificationFrame *f = static_cast<TextIdentificationFrame *>(frame);
StringList fields = f->fieldList();
String genreString;
bool hasNumber = false;
for(StringList::ConstIterator it = fields.begin(); it != fields.end(); ++it) {
bool isNumber = true;
for(String::ConstIterator charIt = (*it).begin();
isNumber && charIt != (*it).end();
++charIt)
{
isNumber = *charIt >= '0' && *charIt <= '9';
}
if(!genreString.isEmpty())
genreString.append(' ');
if(isNumber) {
int number = (*it).toInt();
if(number >= 0 && number <= 255) {
hasNumber = true;
genreString.append(ID3v1::genre(number));
}
}
else
genreString.append(*it);
}
if(hasNumber)
return genreString;
}
String s = frame->toString();
// ID3v2.3 "content type" can contain a ID3v1 genre number in parenthesis at
// the beginning of the field. If this is all that the field contains, do a
// translation from that number to the name and return that. If there is a
// string folloing the ID3v1 genre number, that is considered to be
// authoritative and we return that instead. Or finally, the field may
// simply be free text, in which case we just return the value.
int closing = s.find(")");
if(s.substr(0, 1) == "(" && closing > 0) {
if(closing == int(s.size() - 1))
return ID3v1::genre(s.substr(1, s.size() - 2).toInt());
else
return s.substr(closing + 1);
}
return s;
}
return String::null;
}
