generic geometry_type impl

remove geometry_type from mapnik::datasource

include/mapnik/datasource.hpp

@@ -33,13 +33,10 @@
 #include <mapnik/util/noncopyable.hpp>
 #include <mapnik/feature_style_processor_context.hpp>
 
-// boost
-#include <memory>
-#include <boost/optional.hpp>
-
 // stl
 #include <map>
 #include <string>
+#include <memory>
 
 namespace mapnik {
 
@@ -118,7 +115,6 @@ public:
     virtual featureset_ptr features(query const& q) const = 0;
     virtual featureset_ptr features_at_point(coord2d const& pt, double tol = 0) const = 0;
     virtual box2d<double> envelope() const = 0;
-    virtual boost::optional<geometry_t> get_geometry_type() const = 0;
     virtual layer_descriptor get_descriptor() const = 0;
     virtual ~datasource() {}
 protected:

include/mapnik/geometry_impl.hpp

@@ -37,18 +37,6 @@
 
 namespace mapnik { namespace new_geometry {
 
-enum geometry_types : std::uint8_t
-{
-    Unknown = 0,
-    Point =   1,
-    LineString = 2,
-    Polygon = 3,
-    MultiPoint = 4,
-    MultiLineString = 5,
-    MultiPolygon = 6,
-    GeometryCollection = 7,
-};
-
 struct point
 {
     point() {}

include/mapnik/geometry_type.hpp

@@ -0,0 +1,84 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2015 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
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_GEOMETRY_TYPE_HPP
+#define MAPNIK_GEOMETRY_TYPE_HPP
+
+// mapnik
+#include <mapnik/geometry_impl.hpp>
+#include <mapnik/geometry_types.hpp>
+
+namespace mapnik { namespace new_geometry { namespace detail {
+
+struct geometry_type
+{
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::geometry const& geom) const
+    {
+        return mapnik::util::apply_visitor(*this, geom);
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::point const&) const
+    {
+        return mapnik::new_geometry::geometry_types::Point;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::line_string const&) const
+    {
+        return mapnik::new_geometry::geometry_types::LineString;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::polygon3 const&) const
+    {
+        return mapnik::new_geometry::geometry_types::Polygon;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::multi_point const&) const
+    {
+        return mapnik::new_geometry::geometry_types::MultiPoint;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::multi_line_string const&) const
+    {
+        return mapnik::new_geometry::geometry_types::MultiLineString;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::multi_polygon const&) const
+    {
+        return mapnik::new_geometry::geometry_types::MultiPolygon;
+    }
+
+    mapnik::new_geometry::geometry_types operator () (mapnik::new_geometry::geometry_collection const&) const
+    {
+        return mapnik::new_geometry::geometry_types::GeometryCollection;
+    }
+};
+} // detail
+
+static mapnik::new_geometry::geometry_types geometry_type(mapnik::new_geometry::geometry const& geom)
+{
+    return detail::geometry_type()(geom);
+}
+
+}}
+
+
+#endif // MAPNIK_GEOMETRY_TYPE_HPP

include/mapnik/geometry_types.hpp

@@ -0,0 +1,43 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2015 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
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_GEOMETRY_TYPES_HPP
+#define MAPNIK_GEOMETRY_TYPES_HPP
+
+namespace mapnik { namespace new_geometry {
+
+// OGC compatible types
+enum geometry_types : std::uint8_t
+{
+    Unknown = 0,
+    Point =   1,
+    LineString = 2,
+    Polygon = 3,
+    MultiPoint = 4,
+    MultiLineString = 5,
+    MultiPolygon = 6,
+    GeometryCollection = 7,
+};
+
+}}
+
+#endif // MAPNIK_GEOMETRY_TYPES_HPP

include/mapnik/util/geometry_to_ds_type.hpp

@@ -27,8 +27,6 @@
 #include <mapnik/global.hpp>
 #include <mapnik/geometry_impl.hpp>
 
-//#include <mapnik/datasource.hpp>
-
 // boost
 #include <boost/optional.hpp>
 

plugins/input/geojson/geojson_datasource.cpp

@@ -287,82 +287,6 @@ const char * geojson_datasource::name()
     return "geojson";
 }
 
-boost::optional<mapnik::datasource::geometry_t> geojson_datasource::get_geometry_type() const
-{
-    boost::optional<mapnik::datasource::geometry_t> result;
-    return result; // FIXME
-
-#if 0
-    int multi_type = 0;
-    if (cache_features_)
-    {
-        unsigned num_features = features_.size();
-        for (unsigned i = 0; i < num_features && i < 5; ++i)
-        {
-            mapnik::util::to_ds_type(features_[i]->paths(),result);
-            if (result)
-            {
-                int type = static_cast<int>(*result);
-                if (multi_type > 0 && multi_type != type)
-                {
-                    result.reset(mapnik::datasource::Collection);
-                    return result;
-                }
-                multi_type = type;
-            }
-        }
-    }
-    else
-    {
-        mapnik::util::file file(filename_);
-        if (!file.open())
-        {
-            throw mapnik::datasource_exception("GeoJSON Plugin: could not open: '" + filename_ + "'");
-        }
-        auto itr = tree_->qbegin(boost::geometry::index::intersects(extent_));
-        auto end = tree_->qend();
-        mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
-        for (std::size_t count = 0; itr !=end &&  count < 5; ++itr,++count)
-        {
-            geojson_datasource::item_type const& item = *itr;
-            std::size_t file_offset = item.second.first;
-            std::size_t size = item.second.second;
-
-            std::fseek(file.get(), file_offset, SEEK_SET);
-            std::vector<char> json;
-            json.resize(size);
-            std::fread(json.data(), size, 1, file.get());
-
-            using chr_iterator_type = char const*;
-            chr_iterator_type start = json.data();
-            chr_iterator_type end = start + json.size();
-
-            static const mapnik::transcoder tr("utf8");
-            static const mapnik::json::feature_grammar<chr_iterator_type,mapnik::feature_impl> grammar(tr);
-            using namespace boost::spirit;
-            ascii::space_type space;
-            mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx,1));
-            if (!qi::phrase_parse(start, end, (grammar)(boost::phoenix::ref(*feature)), space))
-            {
-                throw std::runtime_error("Failed to parse geojson feature");
-            }
-            mapnik::util::to_ds_type(feature->paths(),result);
-            if (result)
-            {
-                int type = static_cast<int>(*result);
-                if (multi_type > 0 && multi_type != type)
-                {
-                    result.reset(mapnik::datasource::Collection);
-                    return result;
-                }
-                multi_type = type;
-            }
-        }
-    }
-    return result;
-#endif //
-}
-
 mapnik::datasource::datasource_t geojson_datasource::type() const
 {
     return type_;

plugins/input/geojson/geojson_datasource.hpp

@@ -94,8 +94,7 @@ public:
     mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt, double tol = 0) const;
     mapnik::box2d<double> envelope() const;
     mapnik::layer_descriptor get_descriptor() const;
-    boost::optional<mapnik::datasource::geometry_t> get_geometry_type() const;
-    //
+
     template <typename Iterator>
     void parse_geojson(Iterator start, Iterator end);
     template <typename Iterator>