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#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 $
//! \file rapidxml_utils.hpp This file contains high-level rapidxml utilities that can be useful
//! 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
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