84 lines
2.5 KiB
C++
84 lines
2.5 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) 2006 Artem Pavlenko, Jean-Francois Doyon
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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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// boost
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#include <boost/python.hpp>
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#include <boost/noncopyable.hpp>
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// mapnik
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#include <mapnik/feature.hpp>
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#include <mapnik/datasource.hpp>
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namespace {
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using namespace boost::python;
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inline list features(mapnik::featureset_ptr const& itr)
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{
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list l;
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while (true)
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{
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mapnik::feature_ptr fp = itr->next();
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if (!fp)
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{
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break;
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}
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l.append(fp);
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}
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return l;
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}
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inline object pass_through(object const& o) { return o; }
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inline mapnik::feature_ptr next(mapnik::featureset_ptr const& itr)
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{
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mapnik::feature_ptr f = itr->next();
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if (!f)
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{
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PyErr_SetString(PyExc_StopIteration, "No more features.");
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boost::python::throw_error_already_set();
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}
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return f;
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}
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}
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void export_featureset()
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{
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using namespace boost::python;
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class_<mapnik::Featureset,std::shared_ptr<mapnik::Featureset>,
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boost::noncopyable>("Featureset",no_init)
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.def("__iter__",pass_through)
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.def("next",next)
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.add_property("features",features,
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"The list of features.\n"
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"\n"
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"Usage:\n"
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">>> m.query_map_point(0, 10, 10)\n"
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"<mapnik._mapnik.Featureset object at 0x1004d2938>\n"
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">>> fs = m.query_map_point(0, 10, 10)\n"
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">>> for f in fs.features:\n"
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">>> print f\n"
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"<mapnik.Feature object at 0x105e64140>\n"
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)
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;
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}
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