License.cpp

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.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.
 *
 * 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 https://www.gnu.org/licenses
 *
 */
 
#include <QRegularExpression>
#include "core/License.h"
 
namespace H2Core {
 
        License::License( const QString& sLicenseString, const QString& sCopyrightHolder ) :
        m_sLicenseString( sLicenseString ),
        m_sCopyrightHolder( sCopyrightHolder )
{
        parse( sLicenseString );
}
 
License::License( const License* pOther ) :
        m_license( pOther->m_license ),
        m_sLicenseString( pOther->m_sLicenseString ),
        m_sCopyrightHolder( pOther->m_sCopyrightHolder ) {
}
 
License::~License() {
}
 
void License::setType( LicenseType license ) {
        m_license = license;
        m_sLicenseString = LicenseTypeToQString( license );
}
 
void License::parse( const QString& sLicenseString ) {
 
        m_sLicenseString = sLicenseString;
 
        const QString sUp = sLicenseString.toUpper();
 
        if ( sUp.isEmpty() ||
                 sUp == "UNDEFINED LICENSE" ||
                 sUp == "UNKNOWN LICENSE" ) {
                m_sLicenseString = "undefined license";
                m_license = License::Unspecified;
        }
        else if ( ( sUp.contains( "CC" ) ||
                                ( sUp.contains( "CREATIVE" ) &&
                                  sUp.contains( "COMMONS" ) ) ) &&
                          ( sUp.contains( "BY" ) ||
                                sUp.contains( "ATTRIBUTION" ) ) ) {
                if ( sUp.contains( "SA" ) ||
                         ( sUp.contains( "SHARE" ) &&
                           sUp.contains( "ALIKE" ) ) ) {
                        if ( sUp.contains( "NC" ) ||
                                 ( sUp.contains( "NON" ) &&
                                   sUp.contains( "COMMERCIAL" ) ) ) {
                                m_license = License::CC_BY_NC_SA;
                        }
                        else {
                                m_license = License::CC_BY_SA;
                        }
                }
                else if ( sUp.contains( "ND" ) ||
                                  ( sUp.contains( "NO" ) &&
                                        sUp.contains( "DERIVATIVES" ) ) ) {
                        if ( sUp.contains( "NC" ) ||
                                 ( sUp.contains( "NON" ) &&
                                   sUp.contains( "COMMERCIAL" ) ) ) {
                                m_license = License::CC_BY_NC_ND;
                        }
                        else {
                                m_license = License::CC_BY_ND;
                        }
                }
                else {
                        if ( sUp.contains( "NC" ) ||
                                 ( sUp.contains( "NON" ) &&
                                   sUp.contains( "COMMERCIAL" ) ) ) {
                                m_license = License::CC_BY_NC;
                        }
                        else {
                                m_license = License::CC_BY;
                        }
                }
        }
        else if ( ( ( sUp.contains( "CC" ) ||
                                  ( sUp.contains( "CREATIVE" ) &&
                                        sUp.contains( "COMMONS" ) ) ) &&
                                ( sUp.contains( "0" ) ||
                                  sUp.contains( "ZERO" ) ) ) ||
                          ( sUp.contains( "PUBLIC" ) &&
                                sUp.contains( "DOMAIN" ) ) &&
                          ( sUp.contains( "NO" ) &&
                                sUp.contains( "KNOWN" ) &&
                                sUp.contains( "COPYRIGHT" ) ) ) {
                m_license = License::CC_0;
        }
        else if ( sUp.contains( "GPL" ) ||
                          ( sUp.contains( "GENERAL" ) &&
                                sUp.contains( "PUBLIC" ) &&
                                sUp.contains( "LICENSE" ) ) ) {
                m_license = License::GPL;
        }
        else if ( sUp.contains( "ALL" ) &&
                          sUp.contains( "RIGHTS" ) &&
                          sUp.contains( "RESERVED" ) ) {
                m_license = License::AllRightsReserved;
        }
        else {
                m_license = License::Other;
        }
}
 
bool License::isCopyleft() const {
        if ( m_license == License::GPL ||
                 m_license == License::CC_BY_SA ||
                 m_license == License::CC_BY_NC_SA ) {
                return true;
        }
 
        return false;
}
 
bool License::hasAttribution() const {
        if ( m_license == License::CC_BY ||
                 m_license == License::CC_BY_NC ||
                 m_license == License::CC_BY_SA ||
                 m_license == License::CC_BY_NC_SA ||
                 m_license == License::CC_BY_ND ||
                 m_license == License::CC_BY_NC_ND ) {
                return true;
        } 
 
        return false;
}
        
QString License::toQString( const QString& sPrefix, bool bShort ) const {
        QString s = Base::sPrintIndention;
        QString sOutput;
        if ( ! bShort ) {
                sOutput = QString( "%1[License]\n" ).arg( sPrefix )
                        .append( QString( "%1%2m_license: %3\n" ).arg( sPrefix ).arg( s )
                                         .arg( LicenseTypeToQString( m_license ) ) )
                        .append( QString( "%1%2m_sLicenseString: %3\n" ).arg( sPrefix ).arg( s )
                                         .arg( m_sLicenseString ) )
                        .append( QString( "%1%2m_sCopyrightHolder: %3\n" ).arg( sPrefix ).arg( s )
                                         .arg( m_sCopyrightHolder ) );
        }
        else {
                sOutput = QString( "[License]" )
                        .append( QString( " m_license: %1" )
                                         .arg( LicenseTypeToQString( m_license ) ) )
                        .append( QString( ", m_sLicenseString: %1" )
                                         .arg( m_sLicenseString ) )
                        .append( QString( ", m_sCopyrightHolder: %1" )
                                         .arg( m_sCopyrightHolder ) )
                        .append( "\n" );
        }
        
        return sOutput;
}
};
 
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