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 <memory>
#include <string>
#include <boost/shared_array.hpp>
#include <libxml/parser.h>
 
#include "Document.h"
#include "Exception.h"
 
namespace rl
{
    namespace xml
    {
        class DomParser
        {
        public:
            DomParser() :
                parser(::xmlNewParserCtxt(), ::xmlFreeParserCtxt)
            {
            }
            
            ~DomParser()
            {
            }
            
            ::xmlParserCtxtPtr get() const
            {
                return this->parser.get();
            }
            
            ::xmlParserCtxt& operator*() const
            {
                return *this->parser;
            }
            
            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 (nullptr == 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 (nullptr == doc)
                {
                    throw Exception(::xmlCtxtGetLastError(this->parser.get())->message);
                }
                
                return Document(doc);
            }
            
        protected:
            
        private:
            ::std::shared_ptr< ::xmlParserCtxt> parser;
        };
    }
}
 
#endif // RL_XML_DOMPARSER_H