criteria_xml.cpp

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/*
 * Vega Strike
 * Copyright (C) 2003 Mike Byron
 *
 * http://vegastrike.sourceforge.net/
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include "vegastrike.h"
#if defined (_WIN32) && !defined (__CYGWIN__) && !defined (__MINGW32__)
//For WIN32 debugging.
#include <crtdbg.h>
#endif

#include <assert.h>
#include <set>
#include <string>
#include <expat.h>

#include "criteria.h"
#include "xml_support.h"
#include "vsfilesystem.h"

using XMLSupport::AttributeList;
using namespace VSFileSystem;
using std::set;
using std::string;

void CriteriaContains::beginElement( void *userData, const XML_Char *name, const XML_Char **atts )
{
    AttributeList attributes( atts );
    if (string( name ) == "Planet") {
        for (AttributeList::const_iterator iter = attributes.begin(); iter != attributes.end(); iter++)
            if ( (*iter).name == "file" )
                static_cast< set< string >* > (userData)->insert( string( (*iter).value ) );
    }
}

void CriteriaContains::endElement( void *userData, const XML_Char *name ) {}

std::set< std::string >CriteriaContains::getPlanetTypesFromXML( const char *filename ) const
{
    set< string >textures;

    VSFile  f;
    VSError err;
    err = f.OpenReadOnly( string( string( filename )+string( ".system" ) ).c_str(), SystemFile );
    if (err > Ok) {
        printf( "CriteriaContains: file not found %s\n", filename );
        return textures;
    }
    XML_Parser parser = XML_ParserCreate( NULL );
    XML_SetUserData( parser, &textures );
    XML_SetElementHandler( parser, &CriteriaContains::beginElement, &CriteriaContains::endElement );
    XML_Parse( parser, ( f.ReadFull() ).c_str(), f.Size(), 1 );
    f.Close();
    XML_ParserFree( parser );

    return textures;
}