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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* saxparser.cc
*
* Tue Jul 22 16:26:22 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "saxparser.h"
#include <sstream>
#include <iostream>
#include <hugin.hpp>
SAXParser::SAXParser()
{
parser = XML_ParserCreate(nullptr);
if(!parser)
{
ERR(sax, "Couldn't allocate memory for parser\n");
// throw Exception(...); TODO
return;
}
XML_SetUserData(parser, this);
XML_UseParserAsHandlerArg(parser);
XML_SetElementHandler(parser, SAXParser::startHandler, SAXParser::endHandler);
XML_SetCharacterDataHandler(parser, SAXParser::characterHandler);
}
SAXParser::~SAXParser()
{
XML_ParserFree(parser);
}
int SAXParser::parseFile(const std::string& filename)
{
if(filename.empty())
{
return 0;
}
std::ifstream file(filename, std::ifstream::in);
if(!file.is_open())
{
return 1;
}
std::stringstream ss;
ss << file.rdbuf();
std::string str = ss.str();
return parseString(str, filename);
}
int SAXParser::parseString(const std::string& str,
const std::string& xml_source_name)
{
DEBUG(sax, "parse(buffer %d bytes)\n", (int)str.length());
if(!XML_Parse(parser, str.c_str(), str.length(), true))
{
parseError(str, XML_ErrorString(XML_GetErrorCode(parser)),
xml_source_name, (int)XML_GetCurrentLineNumber(parser));
return 1;
}
return 0;
}
void SAXParser::parseError(const std::string& buf, const std::string& error,
const std::string& xml_source_name,
std::size_t lineno)
{
std::cerr << "SAXParser error trying to parse from source: " <<
xml_source_name << "\n";
std::cerr << "At line " << lineno << ": " << error << "\n";
std::cerr << "Buffer " << buf.size() << " bytes: \n[\n";
std::cerr << buf;
std::cerr << "\n]" << std::endl;
}
void SAXParser::characterHandler(void* parser, const XML_Char* cData, int len)
{
SAXParser* sax_parser = (SAXParser*)XML_GetUserData(parser);
std::string chars(cData, len);
sax_parser->characterData(chars);
}
void SAXParser::startHandler(void* parser, const char* el, const char** attr)
{
SAXParser* sax_parser = (SAXParser*)XML_GetUserData(parser);
// Convert to comfy C++ values...
attr_t attributes;
while(*attr)
{
std::string at_name = *attr++;
std::string at_value = *attr++;
attributes.emplace(at_name, at_value);
}
sax_parser->startTag(std::string(el), attributes);
}
void SAXParser::endHandler(void* parser, const char* el)
{
SAXParser* sax_parser = (SAXParser*)XML_GetUserData(parser);
sax_parser->endTag(std::string(el));
}
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