277 lines
7.3 KiB
C++
277 lines
7.3 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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//$Id$
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// boost
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#include <boost/python/suite/indexing/indexing_suite.hpp>
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#include <boost/python/iterator.hpp>
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#include <boost/python/call_method.hpp>
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#include <boost/python/tuple.hpp>
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#include <boost/python.hpp>
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#include <boost/scoped_array.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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mapnik::geometry2d & (mapnik::Feature::*get_geom1)(unsigned) = &mapnik::Feature::get_geometry;
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namespace boost { namespace python {
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struct value_converter : public boost::static_visitor<PyObject*>
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{
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PyObject * operator() (int val) const
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{
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return ::PyInt_FromLong(val);
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}
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PyObject * operator() (double val) const
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{
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return ::PyFloat_FromDouble(val);
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}
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PyObject * operator() (UnicodeString const& s) const
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{
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std::string buffer;
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mapnik::to_utf8(s,buffer);
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PyObject *obj = Py_None;
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obj = ::PyUnicode_DecodeUTF8(buffer.c_str(),implicit_cast<ssize_t>(buffer.length()),0);
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return obj;
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}
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PyObject * operator() (mapnik::value_null const& s) const
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{
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return NULL;
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}
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};
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struct mapnik_value_to_python
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{
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static PyObject* convert(mapnik::value const& v)
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{
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return boost::apply_visitor(value_converter(),v.base());
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}
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};
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// Forward declaration
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template <class Container, bool NoProxy, class DerivedPolicies>
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class map_indexing_suite2;
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namespace detail
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{
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template <class Container, bool NoProxy>
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class final_map_derived_policies
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: public map_indexing_suite2<Container,
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NoProxy, final_map_derived_policies<Container, NoProxy> > {};
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}
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template <
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class Container,
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bool NoProxy = false,
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class DerivedPolicies
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= detail::final_map_derived_policies<Container, NoProxy> >
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class map_indexing_suite2
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: public indexing_suite<
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Container
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, DerivedPolicies
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, NoProxy
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, true
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, typename Container::value_type::second_type
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, typename Container::key_type
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, typename Container::key_type
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>
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{
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public:
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typedef typename Container::value_type value_type;
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typedef typename Container::value_type::second_type data_type;
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typedef typename Container::key_type key_type;
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typedef typename Container::key_type index_type;
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typedef typename Container::size_type size_type;
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typedef typename Container::difference_type difference_type;
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template <class Class>
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static void
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extension_def(Class& cl)
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{
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}
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static data_type&
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get_item(Container& container, index_type i_)
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{
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typename Container::iterator i = container.props().find(i_);
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if (i == container.end())
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{
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PyErr_SetString(PyExc_KeyError, "Invalid key");
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throw_error_already_set();
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}
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return i->second;
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}
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static void
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set_item(Container& container, index_type i, data_type const& v)
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{
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container[i] = v;
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}
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static void
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delete_item(Container& container, index_type i)
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{
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container.props().erase(i);
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}
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static size_t
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size(Container& container)
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{
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return container.props().size();
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}
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static bool
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contains(Container& container, key_type const& key)
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{
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return container.props().find(key) != container.end();
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}
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static bool
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compare_index(Container& container, index_type a, index_type b)
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{
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return container.props().key_comp()(a, b);
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}
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static index_type
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convert_index(Container& /*container*/, PyObject* i_)
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{
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extract<key_type const&> i(i_);
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if (i.check())
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{
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return i();
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}
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else
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{
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extract<key_type> i(i_);
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if (i.check())
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return i();
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}
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PyErr_SetString(PyExc_TypeError, "Invalid index type");
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throw_error_already_set();
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return index_type();
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}
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};
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template <typename T1, typename T2>
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struct std_pair_to_tuple
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{
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static PyObject* convert(std::pair<T1, T2> const& p)
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{
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return boost::python::incref(
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boost::python::make_tuple(p.first, p.second).ptr());
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}
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};
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template <typename T1, typename T2>
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struct std_pair_to_python_converter
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{
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std_pair_to_python_converter()
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{
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boost::python::to_python_converter<
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std::pair<T1, T2>,
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std_pair_to_tuple<T1, T2> >();
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}
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};
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}
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}
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/*
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mapnik::feature_ptr create_feature_(int id)
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{
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return mapnik::feature_ptr(new mapnik::Feature(id));
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}
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struct UnicodeString_from_python_str
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{
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UnicodeString_from_python_str()
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{
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boost::python::converter::registry::push_back(
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&convertible,
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&construct,
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boost::python::type_id<UnicodeString>());
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}
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static void* convertible(PyObject* obj_ptr)
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{
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if (!PyString_Check(obj_ptr)) return 0;
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return obj_ptr;
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}
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static void construct(
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PyObject* obj_ptr,
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boost::python::converter::rvalue_from_python_stage1_data* data)
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{
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const char* value = PyString_AsString(obj_ptr);
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if (value == 0) boost::python::throw_error_already_set();
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void* storage = (
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(boost::python::converter::rvalue_from_python_storage<UnicodeString>*)
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data)->storage.bytes;
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new (storage) UnicodeString(value);
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data->convertible = storage;
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}
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};
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*/
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void export_feature()
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{
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using namespace boost::python;
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using mapnik::Feature;
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implicitly_convertible<int,mapnik::value>();
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implicitly_convertible<double,mapnik::value>();
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//implicitly_convertible<UnicodeString,mapnik::value>();
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implicitly_convertible<bool,mapnik::value>();
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std_pair_to_python_converter<std::string const,mapnik::value>();
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to_python_converter<mapnik::value,mapnik_value_to_python>();
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//UnicodeString_from_python_str();
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class_<Feature,boost::shared_ptr<Feature>,
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boost::noncopyable>("Feature",no_init)
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.def("id",&Feature::id)
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.def("__str__",&Feature::to_string)
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// .add_property("properties",
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// make_function(&Feature::props,return_value_policy<reference_existing_object>()))
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// .def("add_geometry", // TODO define more mapnik::Feature methods
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.def("num_geometries",&Feature::num_geometries)
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.def("get_geometry", make_function(get_geom1,return_value_policy<reference_existing_object>()))
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.def("envelope", &Feature::envelope)
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//.def("create",create_feature_)
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//.staticmethod("create")
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.def(map_indexing_suite2<Feature, true >())
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.def("iteritems",iterator<Feature> ())
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;
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//def("Feature", &create_feature_);
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//class_<std::map<std::string, mapnik::value> >("Properties")
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// .def(map_indexing_suite2<std::map<std::string, mapnik::value>, true >())
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// .def("iteritems",iterator<std::map<std::string,mapnik::value> > ())
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// ;
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}
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