mapnik/src/parse_path.cpp

54 lines
1.8 KiB
C++

/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#include <mapnik/parse_path.hpp>
#include <mapnik/path_expression_grammar.hpp>
#include <boost/make_shared.hpp>
namespace mapnik {
path_expression_ptr parse_path(std::string const& str)
{
path_expression_grammar<std::string::const_iterator> g;
return parse_path(str,g);
}
path_expression_ptr parse_path(std::string const& str,
path_expression_grammar<std::string::const_iterator> const& g)
{
path_expression path;
std::string::const_iterator itr = str.begin();
std::string::const_iterator end = str.end();
bool r = qi::phrase_parse(itr, end, g, boost::spirit::standard_wide::space, path);
if (r && itr == end)
{
return boost::make_shared<const path_expression>(path); //path;
}
else
{
throw std::runtime_error("Failed to parse path expression: \"" + str + "\"");
}
}
}