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// ----------------------------------------------------------------------------
// Copyright (C) 2002-2006 Marcin Kalicinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ----------------------------------------------------------------------------
#ifndef BOOST_PROPERTY_TREE_INFO_PARSER_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_INFO_PARSER_HPP_INCLUDED
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/detail/info_parser_error.hpp>
#include <boost/property_tree/detail/info_parser_writer_settings.hpp>
#include <boost/property_tree/detail/info_parser_read.hpp>
#include <boost/property_tree/detail/info_parser_write.hpp>
#include <istream>
namespace boost { namespace property_tree { namespace info_parser
{
/**
* Read INFO from a the given stream and translate it to a property tree.
* @note Replaces the existing contents. Strong exception guarantee.
* @throw info_parser_error If the stream cannot be read, doesn't contain
* valid INFO, or a conversion fails.
*/
template<class Ptree, class Ch>
void read_info(std::basic_istream<Ch> &stream, Ptree &pt)
{
Ptree local;
read_info_internal(stream, local, std::string(), 0);
pt.swap(local);
}
/**
* Read INFO from a the given stream and translate it to a property tree.
* @note Replaces the existing contents. Strong exception guarantee.
* @param default_ptree If parsing fails, pt is set to a copy of this tree.
*/
template<class Ptree, class Ch>
void read_info(std::basic_istream<Ch> &stream, Ptree &pt,
const Ptree &default_ptree)
{
try {
read_info(stream, pt);
} catch(file_parser_error &) {
pt = default_ptree;
}
}
/**
* Read INFO from a the given file and translate it to a property tree. The
* tree's key type must be a string type, i.e. it must have a nested
* value_type typedef that is a valid parameter for basic_ifstream.
* @note Replaces the existing contents. Strong exception guarantee.
* @throw info_parser_error If the file cannot be read, doesn't contain
* valid INFO, or a conversion fails.
*/
template<class Ptree>
void read_info(const std::string &filename, Ptree &pt,
const std::locale &loc = std::locale())
{
std::basic_ifstream<typename Ptree::key_type::value_type>
stream(filename.c_str());
if (!stream) {
BOOST_PROPERTY_TREE_THROW(info_parser_error(
"cannot open file for reading", filename, 0));
}
stream.imbue(loc);
Ptree local;
read_info_internal(stream, local, filename, 0);
pt.swap(local);
}
/**
* Read INFO from a the given file and translate it to a property tree. The
* tree's key type must be a string type, i.e. it must have a nested
* value_type typedef that is a valid parameter for basic_ifstream.
* @note Replaces the existing contents. Strong exception guarantee.
* @param default_ptree If parsing fails, pt is set to a copy of this tree.
*/
template<class Ptree>
void read_info(const std::string &filename,
Ptree &pt,
const Ptree &default_ptree,
const std::locale &loc = std::locale())
{
try {
read_info(filename, pt, loc);
} catch(file_parser_error &) {
pt = default_ptree;
}
}
/**
* Writes a tree to the stream in INFO format.
* @throw info_parser_error If the stream cannot be written to, or a
* conversion fails.
* @param settings The settings to use when writing the INFO data.
*/
template<class Ptree, class Ch>
void write_info(std::basic_ostream<Ch> &stream,
const Ptree &pt,
const info_writer_settings<Ch> &settings =
info_writer_settings<Ch>())
{
write_info_internal(stream, pt, std::string(), settings);
}
/**
* Writes a tree to the file in INFO format. The tree's key type must be a
* string type, i.e. it must have a nested value_type typedef that is a
* valid parameter for basic_ofstream.
* @throw info_parser_error If the file cannot be written to, or a
* conversion fails.
* @param settings The settings to use when writing the INFO data.
*/
template<class Ptree>
void write_info(const std::string &filename,
const Ptree &pt,
const std::locale &loc = std::locale(),
const info_writer_settings<
typename Ptree::key_type::value_type
> &settings =
info_writer_make_settings<
typename Ptree::key_type::value_type>())
{
std::basic_ofstream<typename Ptree::key_type::value_type>
stream(filename.c_str());
if (!stream) {
BOOST_PROPERTY_TREE_THROW(info_parser_error(
"cannot open file for writing", filename, 0));
}
stream.imbue(loc);
write_info_internal(stream, pt, filename, settings);
}
} } }
namespace boost { namespace property_tree
{
using info_parser::info_parser_error;
using info_parser::read_info;
using info_parser::write_info;
using info_parser::info_writer_settings;
using info_parser::info_writer_make_settings;
} }
#endif
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