NodeSet.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_NODESET_H
#define RL_XML_NODESET_H
 
#include <memory>
#include <stdexcept>
#include <libxml/xpath.h>
 
#include "Node.h"
 
namespace rl
{
    namespace xml
    {
        class NodeSet
        {
        public:
            explicit NodeSet(::xmlNodeSetPtr nodeSet) :
                nodeSet(nodeSet, ::xmlXPathFreeNodeSet)
            {
            }
            
            explicit NodeSet(const ::std::shared_ptr< ::xmlNodeSet>& nodeSet) :
                nodeSet(nodeSet)
            {
            }
            
            ~NodeSet()
            {
            }
            
            Node at(const int& i) const
            {
                if (i < 0 || i >= this->size())
                {
                    throw ::std::out_of_range("rl::xml::Node::at() out of range");
                }
                
                return Node(this->nodeSet->nodeTab[i]);
            }
            
            bool empty() const
            {
                return 0 == this->size();
            }
            
            ::xmlNodeSetPtr get() const
            {
                return this->nodeSet.get();
            }
            
            int max_size() const
            {
                return this->nodeSet->nodeMax;
            }
            
            ::xmlNodeSet& operator*() const
            {
                return *this->nodeSet;
            }
            
            Node operator[](const int& i) const
            {
                return Node(this->nodeSet->nodeTab[i]);
            }
            
            int size() const
            {
                return this->nodeSet->nodeNr;
            }
            
        protected:
            
        private:
            ::std::shared_ptr< ::xmlNodeSet> nodeSet;
        };
    }
}
 
#endif // RL_XML_NODESET_H