mapnik/boost/property_tree/cmdline_parser.hpp

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2006-10-03 08:52:24 +00:00
// ----------------------------------------------------------------------------
// Copyright (C) 2002-2005 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_CMDLINE_PARSER_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_CMDLINE_PARSER_HPP_INCLUDED
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/detail/ptree_utils.hpp>
namespace boost { namespace property_tree { namespace cmdline_parser
{
template<class Ptree>
void read_cmdline(int argc,
typename Ptree::char_type *argv[],
const std::basic_string<typename Ptree::char_type> &metachars,
Ptree &pt)
{
typedef typename Ptree::char_type Ch;
typedef std::basic_string<Ch> Str;
Ptree local;
// For all arguments
for (int i = 0; i < argc; ++i)
{
Str text = detail::trim<Ch>(argv[i]);
if (!text.empty())
if (metachars.find(text[0]) != Str::npos)
{
if (text.size() == 1)
{
Ptree &child = local.put(text, Str());
Str key;
if (child.size() < 10)
key.push_back(typename Ptree::char_type('0' + child.size()));
child.push_back(std::make_pair(key, Ptree(child.data())));
}
else if (text.size() == 2)
{
Ptree &child = local.put(text.substr(1, 1), Str());
Str key;
if (child.size() < 10)
key.push_back(typename Ptree::char_type('0' + child.size()));
child.push_back(std::make_pair(key, Ptree(child.data())));
}
else
{
Ptree &child = local.put(text.substr(1, 1), detail::trim<Ch>(text.substr(2, Str::npos)));
Str key;
if (child.size() < 10)
key.push_back(typename Ptree::char_type('0' + child.size()));
child.push_back(std::make_pair(key, Ptree(child.data())));
}
}
else
{
Ptree &child = local.put(Str(), detail::trim<Ch>(text));
Str key;
if (child.size() < 10)
key.push_back(typename Ptree::char_type('0' + child.size()));
child.push_back(std::make_pair(key, Ptree(child.data())));
}
}
// Swap local and pt
pt.swap(local);
}
} } }
namespace boost { namespace property_tree
{
using cmdline_parser::read_cmdline;
} }
#endif