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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
*
*****************************************************************************/
//$Id: mapnik_parameters.cpp 17 2005-03-08 23:58:43Z pavlenko $
#include <boost/python.hpp>
#include <boost/python/detail/api_placeholder.hpp>
#include <mapnik/params.hpp>
using mapnik::parameter;
using mapnik::parameters;
struct parameter_pickle_suite : boost::python::pickle_suite
{
static boost::python::tuple
getinitargs(const parameter& p)
{
using namespace boost::python;
return boost::python::make_tuple(p.first,p.second);
}
};
struct parameters_pickle_suite : boost::python::pickle_suite
{
static boost::python::tuple
getstate(const parameters& p)
{
using namespace boost::python;
dict d;
parameters::const_iterator pos=p.begin();
while(pos!=p.end())
{
d[pos->first]=pos->second;
++pos;
}
return boost::python::make_tuple(d);
}
static void setstate(parameters& p, boost::python::tuple state)
{
using namespace boost::python;
if (len(state) != 1)
{
PyErr_SetObject(PyExc_ValueError,
("expected 1-item tuple in call to __setstate__; got %s"
% state).ptr()
);
throw_error_already_set();
}
dict d = extract<dict>(state[0]);
boost::python::list keys=d.keys();
for (int i=0;i<len(keys);++i)
{
std::string key=extract<std::string>(keys[i]);
std::string value=extract<std::string>(d[key]); // FIXME: use boost::variant as a value object. Add Py_Int/Py_Float/Py_String extractors.
p[key] = value;
}
}
};
void export_parameters()
{
using namespace boost::python;
class_<parameter>("Parameter",init<std::string,std::string>())
.def_pickle(parameter_pickle_suite())
;
class_<parameters>("Parameters",init<>())
.def_pickle(parameters_pickle_suite())
;
}
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