/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon * * 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 * *****************************************************************************/ //$Id$ // boost #include <boost/python.hpp> // mapnik #include <mapnik/feature.hpp> #include <mapnik/datasource.hpp> namespace { using namespace boost::python; inline list features(mapnik::featureset_ptr const& itr) { list l; while (true) { mapnik::feature_ptr fp = itr->next(); if (!fp) { break; } l.append(fp); } return l; } inline object pass_through(object const& o) { return o; } inline mapnik::feature_ptr next(mapnik::featureset_ptr const& itr) { if (!itr) { PyErr_SetString(PyExc_StopIteration, "No more features."); boost::python::throw_error_already_set(); } return itr->next(); } } void export_featureset() { using namespace boost::python; using mapnik::Feature; using mapnik::Featureset; class_<Featureset,boost::shared_ptr<Featureset>, boost::noncopyable>("Featureset",no_init) .def("__iter__",pass_through) .def("next",next) .add_property("features",features, "The list of features.\n" "\n" "Usage:\n" ">>> m.query_map_point(0, 10, 10)\n" "<mapnik2._mapnik2.Featureset object at 0x1004d2938>\n" ">>> fs = m.query_map_point(0, 10, 10)\n" ">>> for f in fs.features:\n" ">>> print f\n" "<mapnik2.Feature object at 0x105e64140>\n" ) ; }