mirror of
https://github.com/mapnik/mapnik.git
synced 2025-12-08 20:13:09 +00:00
c191e196c0
Spirit rules are just placeholders. They are cheap to construct and by doing this static initialization order fiasco problem is effectively avoided. Also had to fix name clash between geojson and generic json parsers.
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2017 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/transform/parse_transform.hpp>
|
|
#include <mapnik/transform/transform_expression_grammar_x3.hpp>
|
|
#include <mapnik/expression_grammar_x3_config.hpp> // transcoder_tag
|
|
#include <mapnik/config_error.hpp>
|
|
// stl
|
|
#include <string>
|
|
#include <stdexcept>
|
|
|
|
namespace mapnik {
|
|
|
|
transform_list_ptr parse_transform(std::string const& str, std::string const& encoding)
|
|
{
|
|
using boost::spirit::x3::ascii::space;
|
|
transform_list_ptr trans_list = std::make_shared<transform_list>();
|
|
std::string::const_iterator itr = str.begin();
|
|
std::string::const_iterator end = str.end();
|
|
mapnik::transcoder const tr(encoding);
|
|
#if BOOST_VERSION >= 106700
|
|
auto const parser = boost::spirit::x3::with<mapnik::grammar::transcoder_tag>(tr)
|
|
[
|
|
mapnik::grammar::transform
|
|
];
|
|
#else
|
|
auto const parser = boost::spirit::x3::with<mapnik::grammar::transcoder_tag>(std::ref(tr))
|
|
[
|
|
mapnik::grammar::transform
|
|
];
|
|
#endif
|
|
|
|
bool status = false;
|
|
try
|
|
{
|
|
status = boost::spirit::x3::phrase_parse(itr, end, parser, space, *trans_list);
|
|
}
|
|
catch (boost::spirit::x3::expectation_failure<std::string::const_iterator> const& ex)
|
|
{
|
|
throw config_error("Failed to parse transform expression: \"" + str + "\"");
|
|
}
|
|
|
|
if (status && itr == end)
|
|
{
|
|
return trans_list;
|
|
}
|
|
else
|
|
{
|
|
throw std::runtime_error("Failed to parse transform: \"" + str + "\"");
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace mapnik
|