Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/geometry/multi/io/wkt/read.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children | c530137014c0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/geometry/multi/io/wkt/read.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,168 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2012 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2012 Mateusz Loskot, London, UK. + +// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library +// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. + +// Use, modification and distribution is subject to 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) + +#ifndef BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP +#define BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP + +#include <string> + +#include <boost/geometry/core/mutable_range.hpp> +#include <boost/geometry/multi/core/tags.hpp> +#include <boost/geometry/multi/core/point_type.hpp> +#include <boost/geometry/multi/geometries/concepts/check.hpp> +#include <boost/geometry/multi/io/wkt/detail/prefix.hpp> +#include <boost/geometry/io/wkt/read.hpp> + +namespace boost { namespace geometry +{ + +namespace detail { namespace wkt +{ + +template <typename MultiGeometry, template<typename> class Parser, typename PrefixPolicy> +struct multi_parser +{ + static inline void apply(std::string const& wkt, MultiGeometry& geometry) + { + traits::clear<MultiGeometry>::apply(geometry); + + tokenizer tokens(wkt, boost::char_separator<char>(" ", ",()")); + tokenizer::iterator it; + if (initialize<MultiGeometry>(tokens, PrefixPolicy::apply(), wkt, it)) + { + handle_open_parenthesis(it, tokens.end(), wkt); + + // Parse sub-geometries + while(it != tokens.end() && *it != ")") + { + traits::resize<MultiGeometry>::apply(geometry, boost::size(geometry) + 1); + Parser + < + typename boost::range_value<MultiGeometry>::type + >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1)); + if (it != tokens.end() && *it == ",") + { + // Skip "," after multi-element is parsed + ++it; + } + } + + handle_close_parenthesis(it, tokens.end(), wkt); + } + + check_end(it, tokens.end(), wkt); + } +}; + +template <typename P> +struct noparenthesis_point_parser +{ + static inline void apply(tokenizer::iterator& it, tokenizer::iterator end, + std::string const& wkt, P& point) + { + parsing_assigner<P, 0, dimension<P>::value>::apply(it, end, point, wkt); + } +}; + +template <typename MultiGeometry, typename PrefixPolicy> +struct multi_point_parser +{ + static inline void apply(std::string const& wkt, MultiGeometry& geometry) + { + traits::clear<MultiGeometry>::apply(geometry); + + tokenizer tokens(wkt, boost::char_separator<char>(" ", ",()")); + tokenizer::iterator it; + + if (initialize<MultiGeometry>(tokens, PrefixPolicy::apply(), wkt, it)) + { + handle_open_parenthesis(it, tokens.end(), wkt); + + // If first point definition starts with "(" then parse points as (x y) + // otherwise as "x y" + bool using_brackets = (it != tokens.end() && *it == "("); + + while(it != tokens.end() && *it != ")") + { + traits::resize<MultiGeometry>::apply(geometry, boost::size(geometry) + 1); + + if (using_brackets) + { + point_parser + < + typename boost::range_value<MultiGeometry>::type + >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1)); + } + else + { + noparenthesis_point_parser + < + typename boost::range_value<MultiGeometry>::type + >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1)); + } + + if (it != tokens.end() && *it == ",") + { + // Skip "," after point is parsed + ++it; + } + } + + handle_close_parenthesis(it, tokens.end(), wkt); + } + + check_end(it, tokens.end(), wkt); + } +}; + +}} // namespace detail::wkt + +#ifndef DOXYGEN_NO_DISPATCH +namespace dispatch +{ + +template <typename MultiGeometry> +struct read_wkt<multi_point_tag, MultiGeometry> + : detail::wkt::multi_point_parser + < + MultiGeometry, + detail::wkt::prefix_multipoint + > +{}; + +template <typename MultiGeometry> +struct read_wkt<multi_linestring_tag, MultiGeometry> + : detail::wkt::multi_parser + < + MultiGeometry, + detail::wkt::linestring_parser, + detail::wkt::prefix_multilinestring + > +{}; + +template <typename MultiGeometry> +struct read_wkt<multi_polygon_tag, MultiGeometry> + : detail::wkt::multi_parser + < + MultiGeometry, + detail::wkt::polygon_parser, + detail::wkt::prefix_multipolygon + > +{}; + +} // namespace dispatch +#endif // DOXYGEN_NO_DISPATCH + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP