xmlparser.cpp
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:6k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * xmlparser.cpp
- *****************************************************************************
- * Copyright (C) 2004 the VideoLAN team
- * $Id: dd7279b9b00017680c11ad84d3c6dc9d80a7b919 $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #include "xmlparser.hpp"
- #include "../src/os_factory.hpp"
- #ifdef HAVE_SYS_STAT_H
- # include <sys/stat.h>
- #endif
- // Static variable to avoid initializing catalogs twice
- static bool m_initialized = false;
- XMLParser::XMLParser( intf_thread_t *pIntf, const string &rFileName,
- bool useDTD ):
- SkinObject( pIntf )
- {
- m_pReader = NULL;
- m_pStream = NULL;
- m_pXML = xml_Create( pIntf );
- if( !m_pXML )
- {
- msg_Err( getIntf(), "failed to open XML parser" );
- return;
- }
- // Avoid duplicate initialization (mutex needed ?) -> doesn't work
- // Reinitialization required for a new XMLParser
- // if( !m_initialized )
- // {
- // LoadCatalog();
- // m_initialized = true;
- // }
- LoadCatalog();
- m_pStream = stream_UrlNew( pIntf, rFileName.c_str() );
- if( !m_pStream )
- {
- msg_Err( getIntf(), "failed to open %s for reading",
- rFileName.c_str() );
- return;
- }
- m_pReader = xml_ReaderCreate( m_pXML, m_pStream );
- if( !m_pReader )
- {
- msg_Err( getIntf(), "failed to open %s for parsing",
- rFileName.c_str() );
- return;
- }
- xml_ReaderUseDTD( m_pReader, useDTD );
- }
- XMLParser::~XMLParser()
- {
- if( m_pReader && m_pXML ) xml_ReaderDelete( m_pXML, m_pReader );
- if( m_pXML ) xml_Delete( m_pXML );
- if( m_pStream ) stream_Delete( m_pStream );
- }
- void XMLParser::LoadCatalog()
- {
- // Get the resource path and look for the DTD
- OSFactory *pOSFactory = OSFactory::instance( getIntf() );
- const list<string> &resPath = pOSFactory->getResourcePath();
- const string &sep = pOSFactory->getDirSeparator();
- list<string>::const_iterator it;
- #ifdef HAVE_SYS_STAT_H
- struct stat statBuf;
- // Try to load the catalog first (needed at least on win32 where
- // we don't have a default catalog)
- for( it = resPath.begin(); it != resPath.end(); it++ )
- {
- string catalog_path = (*it) + sep + "skin.catalog";
- if( !stat( catalog_path.c_str(), &statBuf ) )
- {
- msg_Dbg( getIntf(), "Using catalog %s", catalog_path.c_str() );
- xml_CatalogLoad( m_pXML, catalog_path.c_str() );
- break;
- }
- }
- if( it == resPath.end() )
- {
- // Ok, try the default one
- xml_CatalogLoad( m_pXML, 0 );
- }
- for( it = resPath.begin(); it != resPath.end(); it++ )
- {
- string path = (*it) + sep + "skin.dtd";
- if( !stat( path.c_str(), &statBuf ) )
- {
- // DTD found
- msg_Dbg( getIntf(), "using DTD %s", path.c_str() );
- // Add an entry in the default catalog
- xml_CatalogAdd( m_pXML, "public",
- "-//VideoLAN//DTD VLC Skins V"
- SKINS_DTD_VERSION "//EN", path.c_str() );
- break;
- }
- }
- if( it == resPath.end() )
- {
- msg_Err( getIntf(), "cannot find the skins DTD");
- }
- #endif
- }
- bool XMLParser::parse()
- {
- if( !m_pReader ) return false;
- m_errors = false;
- int ret = xml_ReaderRead( m_pReader );
- while( ret == 1 )
- {
- if( m_errors ) return false;
- // Get the node type
- int type = xml_ReaderNodeType( m_pReader );
- switch( type )
- {
- // Error
- case -1:
- return false;
- break;
- case XML_READER_STARTELEM:
- {
- // Read the element name
- char *eltName = xml_ReaderName( m_pReader );
- if( !eltName ) return false;
- // Read the attributes
- AttrList_t attributes;
- while( xml_ReaderNextAttr( m_pReader ) == VLC_SUCCESS )
- {
- char *name = xml_ReaderName( m_pReader );
- char *value = xml_ReaderValue( m_pReader );
- if( !name || !value )
- {
- free( name );
- free( value );
- return false;
- }
- attributes[name] = value;
- }
- handleBeginElement( eltName, attributes );
- free( eltName );
- map<const char*, const char*, ltstr> ::iterator it =
- attributes.begin();
- while( it != attributes.end() )
- {
- free( (char *)it->first );
- free( (char *)it->second );
- it++;
- }
- break;
- }
- // End element
- case XML_READER_ENDELEM:
- {
- // Read the element name
- char *eltName = xml_ReaderName( m_pReader );
- if( !eltName ) return false;
- handleEndElement( eltName );
- free( eltName );
- break;
- }
- }
- ret = xml_ReaderRead( m_pReader );
- }
- return (ret == 0 && !m_errors );
- }