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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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 "XmlOptions.h"
#include "XmlOptions_p.h"
#include "CppUtil.h"
#include "Options.h"
#include "XmlDocument.h"
#include "XmlOption.h"
#include <QFile>
//____________________________________________________________________
Private::XmlOptionsSingleton& XmlOptions::_singleton()
{
static Private::XmlOptionsSingleton singleton;
return singleton;
}
namespace Private
{
//____________________________________________________________________
bool XmlOptionsSingleton::_differs( const Options& first, const Options& second ) const
{
// check special options
for( Options::SpecialMap::const_iterator firstIter = first.specialOptions().constBegin(); firstIter != first.specialOptions().constEnd(); ++firstIter )
{
// skip empty special options
if( firstIter.value().isEmpty() ) continue;
// get matching options in the second set
if( !second.isSpecialOption( firstIter.key() ) ) return true;
Options::List options( second.specialOptions( firstIter.key() ) );
// loop over options in first list
for( const auto& option:firstIter.value() )
{
// skip non recordable options
if( !option.isRecordable() ) continue;
// find in second list
if( options.indexOf( option ) < 0 ) return true;
}
}
// loop over options and check existence in other map
for( Options::Map::const_iterator firstIter = first.options().constBegin(); firstIter != first.options().constEnd(); ++firstIter )
{
// skip non recordable options
if( !firstIter.value().isRecordable() ) continue;
const Options::Map::const_iterator secondIter( second.options().constFind( firstIter.key() ) );
if( secondIter == second.options().constEnd() )
{
if( !firstIter.value().isDefault() ) return true;
} else if( firstIter.value() != secondIter.value() ) return true;
}
return false;
}
}
//____________________________________________________________________
const File& XmlOptions::file()
{ return _singleton().file(); }
//____________________________________________________________________
const XmlError& XmlOptions::error()
{ return _singleton().error_; }
//____________________________________________________________________
void XmlOptions::setFile( const File& file )
{
// make sure file is hidden (windows only)
if( !_singleton().setFile( file ) ) return;
if( _singleton().file().localName().startsWith( '.' ) )
{ _singleton().file().setHidden(); }
}
//____________________________________________________________________
Options& XmlOptions::get()
{ return _singleton().options_; }
//____________________________________________________________________
bool XmlOptions::read()
{
// check filename is valid
if( _singleton().file().isEmpty() ) return false;
// parse the file
XmlDocument document;
QFile qtfile( _singleton().file() );
if ( !document.setContent( &qtfile, _singleton().error_ ) ) return false;
else return _read( document, _singleton().options_ );
}
//________________________________________________
bool XmlOptions::write()
{
// check filename is valid
if( _singleton().file().isEmpty() ) return false;
// create document and read
XmlDocument document;
{
QFile qtfile( _singleton().file() );
document.setContent( &qtfile );
}
// read old options from xml document
Options options;
_read( document, options );
if( !_singleton().differs( options ) ) return true;
// create main element
auto top = document.createElement( Base::Xml::Options ).toElement();
// write options
for( auto&& iter = _singleton().options_.specialOptions().begin(); iter != _singleton().options_.specialOptions().end(); ++iter )
{
for( const auto& option:iter.value() )
{
if( option.hasFlag( Option::Flag::Recordable ) && option.isSet() )
{ top.appendChild( XmlOption( iter.key(), option ).domElement( document.get() ) ); }
}
}
// write standard options
for( auto&& iter = _singleton().options_.options().begin(); iter != _singleton().options_.options().end(); ++iter )
{
if( iter.value().hasFlag( Option::Flag::Recordable ) && iter.value().isSet() && !iter.value().isDefault() )
{ top.appendChild( XmlOption( iter.key(), iter.value() ).domElement( document.get() ) ); }
}
// append topNode to document and write
document.replaceChild( top );
// write
{
QFile qfile( _singleton().file() );
if( !qfile.open( QIODevice::WriteOnly ) ) return false;
qfile.write( document.toByteArray() );
}
return true;
}
//________________________________________________
bool XmlOptions::_read( const XmlDocument& document, Options& options )
{
// look for relevant element
auto topNodes = document.elementsByTagName( Base::Xml::Options );
if( topNodes.isEmpty() ) return false;
for(QDomNode node = topNodes.at(0).firstChild(); !node.isNull(); node = node.nextSibling() )
{
QDomElement element = node.toElement();
if( element.isNull() ) continue;
// special options
if( element.tagName() == Base::Xml::SpecialOption )
{
// retrieve Value attribute
QString value( element.attribute( Base::Xml::Value ) );
if( value.size() ) options.keep( value );
} else if( element.tagName() == Base::Xml::Option ) {
XmlOption option( element );
if( options.isSpecialOption( option.name() ) )
{
static QRegExp invalidOptionRegExp( "\\(0b\\d+\\)$" );
if( invalidOptionRegExp.indexIn( option.raw() ) < 0 )
{ options.add( option.name(), (Option) option ); }
} else options.set( option.name(), (Option) option );
}
}
return true;
}
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