kicad/include/boost/property_tree/detail/info_parser_write.hpp

148 lines
5.4 KiB
C++

// ----------------------------------------------------------------------------
// 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_DETAIL_INFO_PARSER_WRITE_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_DETAIL_INFO_PARSER_WRITE_HPP_INCLUDED
#include "boost/property_tree/ptree.hpp"
#include "boost/property_tree/detail/info_parser_utils.hpp"
#include <string>
namespace boost { namespace property_tree { namespace info_parser
{
template<class Ch>
void write_info_indent(std::basic_ostream<Ch> &stream,
int indent,
const info_writer_settings<Ch> &settings
)
{
stream << std::basic_string<Ch>(indent * settings.indent_count, settings.indent_char);
}
// Create necessary escape sequences from illegal characters
template<class Ch>
std::basic_string<Ch> create_escapes(const std::basic_string<Ch> &s)
{
std::basic_string<Ch> result;
typename std::basic_string<Ch>::const_iterator b = s.begin();
typename std::basic_string<Ch>::const_iterator e = s.end();
while (b != e)
{
if (*b == Ch('\0')) result += Ch('\\'), result += Ch('0');
else if (*b == Ch('\a')) result += Ch('\\'), result += Ch('a');
else if (*b == Ch('\b')) result += Ch('\\'), result += Ch('b');
else if (*b == Ch('\f')) result += Ch('\\'), result += Ch('f');
else if (*b == Ch('\n')) result += Ch('\\'), result += Ch('n');
else if (*b == Ch('\r')) result += Ch('\\'), result += Ch('r');
else if (*b == Ch('\v')) result += Ch('\\'), result += Ch('v');
else if (*b == Ch('"')) result += Ch('\\'), result += Ch('"');
else if (*b == Ch('\\')) result += Ch('\\'), result += Ch('\\');
else
result += *b;
++b;
}
return result;
}
template<class Ch>
bool is_simple_key(const std::basic_string<Ch> &key)
{
const static std::basic_string<Ch> chars = convert_chtype<Ch, char>(" \t{};\n\"");
return !key.empty() && key.find_first_of(chars) == key.npos;
}
template<class Ch>
bool is_simple_data(const std::basic_string<Ch> &data)
{
const static std::basic_string<Ch> chars = convert_chtype<Ch, char>(" \t{};\n\"");
return !data.empty() && data.find_first_of(chars) == data.npos;
}
template<class Ptree>
void write_info_helper(std::basic_ostream<typename Ptree::key_type::value_type> &stream,
const Ptree &pt,
int indent,
const info_writer_settings<typename Ptree::key_type::value_type> &settings)
{
// Character type
typedef typename Ptree::key_type::value_type Ch;
// Write data
if (indent >= 0)
{
if (!pt.data().empty())
{
std::basic_string<Ch> data = create_escapes(pt.template get_value<std::basic_string<Ch> >());
if (is_simple_data(data))
stream << Ch(' ') << data << Ch('\n');
else
stream << Ch(' ') << Ch('\"') << data << Ch('\"') << Ch('\n');
}
else if (pt.empty())
stream << Ch(' ') << Ch('\"') << Ch('\"') << Ch('\n');
else
stream << Ch('\n');
}
// Write keys
if (!pt.empty())
{
// Open brace
if (indent >= 0)
{
write_info_indent( stream, indent, settings);
stream << Ch('{') << Ch('\n');
}
// Write keys
typename Ptree::const_iterator it = pt.begin();
for (; it != pt.end(); ++it)
{
// Output key
std::basic_string<Ch> key = create_escapes(it->first);
write_info_indent( stream, indent+1, settings);
if (is_simple_key(key))
stream << key;
else
stream << Ch('\"') << key << Ch('\"');
// Output data and children
write_info_helper(stream, it->second, indent + 1, settings);
}
// Close brace
if (indent >= 0)
{
write_info_indent( stream, indent, settings);
stream << Ch('}') << Ch('\n');
}
}
}
// Write ptree to info stream
template<class Ptree>
void write_info_internal(std::basic_ostream<typename Ptree::key_type::value_type> &stream,
const Ptree &pt,
const std::string &filename,
const info_writer_settings<typename Ptree::key_type::value_type> &settings)
{
write_info_helper(stream, pt, -1, settings);
if (!stream.good())
BOOST_PROPERTY_TREE_THROW(info_parser_error("write error", filename, 0));
}
} } }
#endif