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tagguesser.cpp
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tagguesser.cpp
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/*
* (c) 2005 Alexandre Oliveira <aleprj@gmail.com>
* (c) 2003 Frerich Raabe <raabe@kde.org>
*
* 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.
*/
#define DEBUG_PREFIX "TagGuesser"
#include "amarok.h"
#include "debug.h"
#include "tagguesser.h"
#include <kapplication.h>
#include <kconfig.h>
#include <kglobal.h>
#include <kmacroexpander.h>
FileNameScheme::FileNameScheme( const QString &s )
: m_cod( s )
, m_titleField( -1 )
, m_artistField( -1 )
, m_albumField( -1 )
, m_trackField( -1 )
, m_commentField( -1 )
, m_yearField( -1 )
, m_composerField( -1 )
, m_genreField( -1 )
{
int artist = s.find( "%artist" );
int title = s.find( "%title" );
int track = s.find( "%track" );
int album = s.find( "%album" );
int comment = s.find( "%comment" );
int year = s.find( "%year" );
int composer = s.find( "%composer" );
int genre = s.find( "%genre" );
int fieldNumber = 1;
int i = s.find( '%' );
while ( i > -1 ) {
if ( title == i )
m_titleField = fieldNumber++;
if ( artist == i )
m_artistField = fieldNumber++;
if ( album == i )
m_albumField = fieldNumber++;
if ( track == i )
m_trackField = fieldNumber++;
if ( comment == i )
m_commentField = fieldNumber++;
if ( year == i )
m_yearField = fieldNumber++;
if ( composer == i )
m_composerField = fieldNumber++;
if ( genre == i )
m_genreField = fieldNumber++;
i = s.find('%', i + 1);
}
m_regExp.setPattern( composeRegExp( s ) );
}
bool FileNameScheme::matches( const QString &fileName ) const
{
/* Strip extension ('.mp3') because '.' may be part of a title, and thus
* does not work as a separator.
*/
QString stripped = fileName;
stripped.truncate( stripped.findRev( '.' ) );
return m_regExp.exactMatch( stripped );
}
QString FileNameScheme::title() const
{
if( m_titleField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_titleField ];
}
QString FileNameScheme::artist() const
{
if( m_artistField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_artistField ];
}
QString FileNameScheme::album() const
{
if( m_albumField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_albumField ];
}
QString FileNameScheme::track() const
{
if( m_trackField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_trackField ];
}
QString FileNameScheme::comment() const
{
if( m_commentField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_commentField ];
}
QString FileNameScheme::year() const
{
if( m_yearField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_yearField ];
}
QString FileNameScheme::composer() const
{
if( m_composerField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_composerField ];
}
QString FileNameScheme::genre() const
{
if( m_genreField == -1 )
return QString();
return m_regExp.capturedTexts()[ m_genreField ];
}
QString FileNameScheme::composeRegExp( const QString &s ) const
{
QMap<QString, QString> substitutions;
KConfigGroup config(KGlobal::config(), "TagGuesser");
substitutions[ "title" ] = config.readEntry( "Title regexp", "([\\w\\s'&_,\\.]+)" );
substitutions[ "artist" ] = config.readEntry( "Artist regexp", "([\\w\\s'&_,\\.]+)" );
substitutions[ "album" ] = config.readEntry( "Album regexp", "([\\w\\s'&_,\\.]+)" );
substitutions[ "track" ] = config.readEntry( "Track regexp", "(\\d+)" );
substitutions[ "comment" ] = config.readEntry( "Comment regexp", "([\\w\\s_]+)" );
substitutions[ "year" ] = config.readEntry( "Year regexp", "(\\d+)" );
substitutions[ "composer" ] = config.readEntry( "Composer regexp", "([\\w\\s'&_,\\.]+)" );
substitutions[ "genre" ] = config.readEntry( "Genre regexp", "([\\w\\s'&_,\\.]+)" );
QString regExp = QRegExp::escape( s.simplifyWhiteSpace() );
regExp = ".*" + regExp;
regExp.replace( ' ', "\\s+" );
regExp = KMacroExpander::expandMacros( regExp, substitutions );
regExp += "[^/]*$";
return regExp;
}
QStringList TagGuesser::schemeStrings()
{
QStringList schemes;
schemes = Amarok::config( "TagGuesser" )->readListEntry( "Filename schemes" );
if ( schemes.isEmpty() ) {
schemes += "%track - %title";
schemes += "%artist - (%track) - %title [%comment]";
schemes += "%artist - (%track) - %title (%comment)";
schemes += "%artist - (%track) - %title";
schemes += "%artist - [%track] - %title [%comment]";
schemes += "%artist - [%track] - %title (%comment)";
schemes += "%artist - [%track] - %title";
schemes += "%artist - %track - %title [%comment]";
schemes += "%artist - %track - %title (%comment)";
schemes += "%artist - %track - %title";
schemes += "(%track) %artist - %title [%comment]";
schemes += "(%track) %artist - %title (%comment)";
schemes += "(%track) %artist - %title";
schemes += "[%track] %artist - %title [%comment]";
schemes += "[%track] %artist - %title (%comment)";
schemes += "[%track] %artist - %title";
schemes += "%track %artist - %title [%comment]";
schemes += "%track %artist - %title (%comment)";
schemes += "%track %artist - %title";
schemes += "(%artist) %title [%comment]";
schemes += "(%artist) %title (%comment)";
schemes += "(%artist) %title";
schemes += "%artist - %title [%comment]";
schemes += "%artist - %title (%comment)";
schemes += "%artist - %title";
schemes += "%artist/%album/[%track] %title [%comment]";
schemes += "%artist/%album/[%track] %title (%comment)";
schemes += "%artist/%album/[%track] %title";
}
return schemes;
}
void TagGuesser::setSchemeStrings( const QStringList &schemes )
{
KConfig *cfg = KGlobal::config();
{
KConfigGroupSaver saver( cfg, "TagGuesser" );
cfg->writeEntry( "Filename schemes", schemes );
}
cfg->sync();
}
TagGuesser::TagGuesser()
{
loadSchemes();
}
TagGuesser::TagGuesser( const QString &absFileName )
{
loadSchemes();
guess( absFileName );
}
void TagGuesser::loadSchemes()
{
const QStringList schemes = schemeStrings();
QStringList::ConstIterator it = schemes.begin();
QStringList::ConstIterator end = schemes.end();
for ( ; it != end; ++it )
m_schemes += FileNameScheme( *it );
}
void TagGuesser::guess( const QString &absFileName )
{
m_title = m_artist = m_album = m_track = m_comment = m_year = m_composer = m_genre = QString::null;
FileNameScheme::List::ConstIterator it = m_schemes.begin();
FileNameScheme::List::ConstIterator end = m_schemes.end();
for ( ; it != end; ++it ) {
const FileNameScheme schema( *it );
if( schema.matches( absFileName ) ) {
debug() <<"Schema used: " << " " << schema.pattern() <<endl;
m_title = capitalizeWords( schema.title().replace( '_', " " ) ).stripWhiteSpace();
m_artist = capitalizeWords( schema.artist().replace( '_', " " ) ).stripWhiteSpace();
m_album = capitalizeWords( schema.album().replace( '_', " " ) ).stripWhiteSpace();
m_track = schema.track().stripWhiteSpace();
m_comment = schema.comment().replace( '_', " " ).stripWhiteSpace();
m_year = schema.year().stripWhiteSpace();
m_composer = capitalizeWords( schema.composer().replace( '_', " " ) ).stripWhiteSpace();
m_genre = capitalizeWords( schema.genre().replace( '_', " " ) ).stripWhiteSpace();
break;
}
}
}
QString TagGuesser::capitalizeWords( const QString &s )
{
if( s.isEmpty() )
return s;
QString result = s;
result[ 0 ] = result[ 0 ].upper();
const QRegExp wordRegExp( "\\s\\w" );
int i = result.find( wordRegExp );
while ( i > -1 ) {
result[ i + 1 ] = result[ i + 1 ].upper();
i = result.find( wordRegExp, ++i );
}
return result;
}

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