blame: source/code/Libs/include/cereal/external/rapidxml/rapidxml_utils.hpp

#ifndef RAPIDXML_UTILS_HPP_INCLUDED

#define RAPIDXML_UTILS_HPP_INCLUDED

// Copyright (C) 2006, 2009 Marcin Kalicinski

// Version 1.13

// Revision $DateTime: 2009/05/13 01:46:17 $

//! in certain simple scenarios. They should probably not be used if maximizing performance is the main objective.

#include "rapidxml.hpp"

#include <vector>

#include <string>

#include <fstream>

#include <stdexcept>

namespace rapidxml

{

    //! Represents data loaded from a file

    template<class Ch = char>

    class file

    {

    public:

        //! Loads file into the memory. Data will be automatically destroyed by the destructor.

        //! \param filename Filename to load.

        file(const char *filename)

        {

            using namespace std;

            // Open stream

            basic_ifstream<Ch> stream(filename, ios::binary);

            if (!stream)

                throw runtime_error(string("cannot open file ") + filename);

            stream.unsetf(ios::skipws);

            // Determine stream size

            stream.seekg(0, ios::end);

            size_t size = stream.tellg();

            stream.seekg(0);

            // Load data and add terminating 0

            m_data.resize(size + 1);

            stream.read(&m_data.front(), static_cast<streamsize>(size));

            m_data[size] = 0;

        }

        //! Loads file into the memory. Data will be automatically destroyed by the destructor

        //! \param stream Stream to load from

        file(std::basic_istream<Ch> &stream)

        {

            using namespace std;

            // Load data and add terminating 0

            stream.unsetf(ios::skipws);

            m_data.assign(istreambuf_iterator<Ch>(stream), istreambuf_iterator<Ch>());

            if (stream.fail() || stream.bad())

                throw runtime_error("error reading stream");

            m_data.push_back(0);

        }

        //! Gets file data.

        //! \return Pointer to data of file.

        Ch *data()

        {

            return &m_data.front();

        }

        //! Gets file data.

        //! \return Pointer to data of file.

        const Ch *data() const

        {

            return &m_data.front();

        }

        //! Gets file data size.

        //! \return Size of file data, in characters.

        std::size_t size() const

        {

            return m_data.size();

        }

    private:

        std::vector<Ch> m_data;   // File data

    };

    //! Counts children of node. Time complexity is O(n).

    //! \return Number of children of node

    template<class Ch>

    inline std::size_t count_children(xml_node<Ch> *node)

    {

        xml_node<Ch> *child = node->first_node();

        std::size_t count = 0;

        while (child)

        {

            ++count;

            child = child->next_sibling();

        }

        return count;

    }

    //! Counts attributes of node. Time complexity is O(n).

    //! \return Number of attributes of node

    template<class Ch>

    inline std::size_t count_attributes(xml_node<Ch> *node)

    {

        xml_attribute<Ch> *attr = node->first_attribute();

        std::size_t count = 0;

        while (attr)

        {

            ++count;

            attr = attr->next_attribute();

        }

        return count;

    }

}

#endif