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/*****************************************************************************
*
* 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
*
*****************************************************************************/
// boost
#include <boost/python.hpp>
#include <boost/noncopyable.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)
{
mapnik::feature_ptr f = itr->next();
if (!f)
{
PyErr_SetString(PyExc_StopIteration, "No more features.");
boost::python::throw_error_already_set();
}
return f;
}
}
void export_featureset()
{
using namespace boost::python;
class_<mapnik::Featureset,boost::shared_ptr<mapnik::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"
"<mapnik._mapnik.Featureset object at 0x1004d2938>\n"
">>> fs = m.query_map_point(0, 10, 10)\n"
">>> for f in fs.features:\n"
">>> print f\n"
"<mapnik.Feature object at 0x105e64140>\n"
)
;
}
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