121 lines
5.3 KiB
C++
121 lines
5.3 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2017 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#include "catch.hpp"
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#include "ds_test_util.hpp"
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#include <mapnik/util/fs.hpp>
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#include <mapnik/util/file_io.hpp>
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#include <mapnik/json/topology.hpp>
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#include <mapnik/json/topojson_grammar_x3.hpp>
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#include <mapnik/json/topojson_utils.hpp>
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namespace {
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bool parse_topology(std::string const& filename, mapnik::topojson::topology & topo)
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{
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mapnik::util::file file(filename);
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std::string buffer;
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buffer.resize(file.size());
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std::fread(&buffer[0], buffer.size(), 1, file.get());
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if (!file) return false;
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using space_type = boost::spirit::x3::standard::space_type;
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char const* itr = buffer.c_str();
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char const* end = itr + buffer.length();
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try
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{
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boost::spirit::x3::phrase_parse(itr, end, mapnik::json::topojson_grammar(), space_type() , topo);
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}
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catch (boost::spirit::x3::expectation_failure<char const*> const& ex)
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{
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std::cerr << "failed to parse TopoJSON..." << std::endl;
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std::cerr << ex.what() << std::endl;
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std::cerr << "Expected: " << ex.which();
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std::cerr << " Got: \"" << std::string(ex.where(), ex.where() + 200) << "...\"" << std::endl;
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return false;
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}
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return (itr == end);
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}
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}
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TEST_CASE("topojson")
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{
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SECTION("geometry parsing")
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{
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mapnik::value_integer feature_id = 0;
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mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
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mapnik::transcoder tr("utf8");
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for (auto const& path : mapnik::util::list_directory("test/data/topojson/"))
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{
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mapnik::topojson::topology topo;
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REQUIRE(parse_topology(path, topo));
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for (auto const& geom : topo.geometries)
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{
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mapnik::box2d<double> bbox = mapnik::util::apply_visitor(mapnik::topojson::bounding_box_visitor(topo), geom);
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CHECK(bbox.valid());
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mapnik::topojson::feature_generator<mapnik::context_ptr> visitor(ctx, tr, topo, feature_id++);
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mapnik::feature_ptr feature = mapnik::util::apply_visitor(visitor, geom);
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CHECK(feature);
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CHECK(feature->envelope() == bbox);
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}
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}
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}
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SECTION("TopoJSON properties are properly expressed")
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{
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std::string filename("./test/data/topojson/escaped.topojson");
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mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
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mapnik::transcoder tr("utf8");
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mapnik::topojson::topology topo;
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REQUIRE(parse_topology(filename, topo));
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mapnik::value_integer feature_id = 0;
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for (auto const& geom : topo.geometries)
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{
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mapnik::box2d<double> bbox = mapnik::util::apply_visitor(mapnik::topojson::bounding_box_visitor(topo), geom);
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CHECK(bbox.valid());
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mapnik::topojson::feature_generator<mapnik::context_ptr> visitor(ctx, tr, topo, feature_id);
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mapnik::feature_ptr feature = mapnik::util::apply_visitor(visitor, geom);
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CHECK(feature);
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CHECK(feature->envelope() == bbox);
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std::initializer_list<attr> attrs = {
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attr{"name", tr.transcode("Test")},
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attr{"NOM_FR", tr.transcode("Québec")},
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attr{"boolean", mapnik::value_bool("true")},
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attr{"description", tr.transcode("Test: \u005C")},
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attr{"double", mapnik::value_double(1.1)},
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attr{"int", mapnik::value_integer(1)},
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attr{"object", tr.transcode("{\"name\":\"waka\",\"spaces\":\"value with spaces\",\"int\":1,\"double\":1.1,\"boolean\":false"
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",\"NOM_FR\":\"Québec\",\"array\":[\"string\",\"value with spaces\",3,1.1,null,true"
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",\"Québec\"],\"another_object\":{\"name\":\"nested object\"}}")},
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attr{"spaces", tr.transcode("this has spaces")},
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attr{"array", tr.transcode("[\"string\",\"value with spaces\",3,1.1,null,true,"
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"\"Québec\",{\"name\":\"object within an array\"},"
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"[\"array\",\"within\",\"an\",\"array\"]]")},
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attr{"empty_array", tr.transcode("[]")},
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attr{"empty_object", tr.transcode("{}")},
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};
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REQUIRE_ATTRIBUTES(feature, attrs);
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}
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}
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}
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