DomParser.h

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//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
 
#ifndef _RL_XML_DOMPARSER_H_
#define _RL_XML_DOMPARSER_H_
 
#include <string>
#include <boost/shared_array.hpp>
#include <boost/shared_ptr.hpp>
#include <libxml/parser.h>
 
#include "Document.h"
#include "Exception.h"
 
namespace rl
{
    namespace xml
    {
        class DomParser
        {
        public:
            DomParser() :
                parser(xmlNewParserCtxt(), xmlFreeParserCtxt)
            {
            }
            
            virtual ~DomParser()
            {
            }
            
            Document readFile(const ::std::string& filename, const ::std::string& encoding = "", const int& options = 0) const
            {
                xmlDocPtr doc = xmlCtxtReadFile(this->parser.get(), filename.c_str(), encoding.c_str(), options);
                
                if (NULL == doc)
                {
                    throw Exception(xmlCtxtGetLastError(this->parser.get())->message);
                }
                
                return Document(doc);
            }
            
            Document readMemory(const ::std::string& buffer, const ::std::string& url = "", const ::std::string& encoding = "", const int& options = 0) const
            {
                xmlDocPtr doc = xmlCtxtReadMemory(this->parser.get(), buffer.c_str(), static_cast< int >(buffer.size()), url.c_str(), encoding.c_str(), options);
                
                if (NULL == doc)
                {
                    throw Exception(xmlCtxtGetLastError(this->parser.get())->message);
                }
                
                return Document(doc);
            }
            
        protected:
            
        private:
            ::boost::shared_ptr< xmlParserCtxt > parser;
        };
    }
}
 
#endif // _RL_XML_DOMPARSER_H_