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/****************************************************************************************
* Copyright (c) 2010 Sergey Ivanov <123kash@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify it under *
* the terms of the GNU General Public License as published by the Free Software *
* Foundation; either version 2 of the License, or (at your option) any later *
* version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT ANY *
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A *
* PARTICULAR PURPOSE. See the GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
****************************************************************************************/
#include "TagsFromFileNameGuesser.h"
#include <QStringList>
const QStringList m_schemes( QStringList()
//01 Artist - Title.ext
<< "^%track%\\W*-?\\W*%artist%\\W*-\\W*%title%\\.+(?:\\w{2,5})$"
//01 Title.ext
<< "^%track%\\W*-?\\W*%title%\\.+?:\\w{2,5}$"
//Album - 01 - Artist - Title.ext
<< "^%album%\\W*-\\W*%track%\\W*-\\W*%artist%\\W*-\\W*%title%\\.+(?:\\w{2,5})$"
//Artist - Album - 01 - Title.ext
<< "^%artist%\\W*-\\W*%album%\\W*-\\W*%track%\\W*-\\W*%title%\\.+(?:\\w{2,5})$"
// Artist - Album - Title.ext
<< "^%artist%\\W*-\\W*%album%\\W*-\\W*%title%\\.+(?:\\w{2,5})$"
//Artist - Title.ext
<< "^%artist%\\W*-\\W*%title%\\.+(?:\\w{2,5})$"
//Title.ext
<< "^%title%\\.+(?:\\w{2,5})$"
);
const QRegExp m_digitalFields( "(%(?:discnumber|track|year)%)" );
const QRegExp m_literalFields( "(%(?:album|albumartist|artist|comment|composer|genre|title)%)" );
quint64
fieldName( const QString &field )
{
if( field == "album" )
return Meta::valAlbum;
else if( field == "albumartist" )
return Meta::valAlbumArtist;
else if( field == "artist" )
return Meta::valArtist;
else if( field == "comment" )
return Meta::valComment;
else if( field == "composer" )
return Meta::valComposer;
else if( field == "discnumber" )
return Meta::valDiscNr;
else if( field == "genre" )
return Meta::valGenre;
else if( field == "title" )
return Meta::valTitle;
else if( field == "track" )
return Meta::valTrackNr;
else if( field == "year" )
return Meta::valYear;
return 0;
}
QList< qint64 >
parseTokens( const QString &scheme )
{
QRegExp rxm( "%(\\w+)%" );
QList< qint64 > tokens;
int pos = 0;
qint64 field;
while( ( pos = rxm.indexIn( scheme, pos ) ) != -1 )
{
field = fieldName( rxm.cap( 1 ) );
if( field )
tokens << field;
pos += rxm.matchedLength();
}
return tokens;
}
Meta::FieldHash
Meta::Tag::TagGuesser::guessTagsByScheme( const QString &fileName, const QString &scheme,
bool cutTrailingSpaces, bool convertUnderscores,
bool isRegExp )
{
Meta::FieldHash metadata;
QRegExp rx;
QString m_fileName = fileName;
QString m_scheme = scheme;
QList< qint64 > tokens = parseTokens( m_scheme );
// Screen all special symbols
if( !isRegExp )
m_scheme = m_scheme.replace( QRegExp( "([~!\\^&*()\\-+\\[\\]{}\\\\:\"?\\.])" ),"\\\\1" );
QRegExp spaces( "(\\s+)" );
rx.setPattern( m_scheme.replace( spaces, "\\s+" )
.replace( m_digitalFields, "(\\d+)" )
.replace( m_literalFields, "(.+)" )
.replace( "%ignore%", "(?:.+)" ) );
if( !rx.exactMatch( m_fileName ) )
return metadata;
QString value;
for( int i = 0; i < tokens.count(); i++ )
{
value = rx.cap( i + 1 );
if( convertUnderscores )
value.replace( "_", " " );
if( cutTrailingSpaces )
value = value.trimmed();
metadata.insert( tokens[i], value );
}
return metadata;
}
Meta::FieldHash
Meta::Tag::TagGuesser::guessTags( const QString &fileName )
{
QString tmpStr = fileName;
int pos = 0;
if( ( pos = fileName.lastIndexOf( '/' ) ) != -1 )
tmpStr = fileName.mid( pos + 1 );
foreach( QString scheme, m_schemes )
{
Meta::FieldHash metadata = guessTagsByScheme( tmpStr, scheme, true, true, true );
if( !metadata.isEmpty() )
return metadata;
}
return Meta::FieldHash();
}
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