/usr/include/mapnik/util/path_iterator.hpp is in libmapnik-dev 2.2.0+ds1-6build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* 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
*
*****************************************************************************/
#ifndef MAPNIK_VERTEX_ITERATOR_HPP
#define MAPNIK_VERTEX_ITERATOR_HPP
// mapnik
#include <mapnik/global.hpp>
// boost
#include <boost/tuple/tuple.hpp>
#include <boost/iterator/iterator_facade.hpp>
namespace mapnik { namespace util {
template <typename T>
class path_iterator
: public boost::iterator_facade< path_iterator<T>,
boost::tuple<unsigned,double,double> const,
boost::forward_traversal_tag
>
{
public:
typedef T path_type;
typedef typename boost::tuple<unsigned, double, double> value_type;
path_iterator()
: v_(mapnik::SEG_END,0,0),
vertices_()
{}
explicit path_iterator(path_type const& vertices)
: vertices_(&vertices)
{
vertices_->rewind(0);
increment();
}
private:
friend class boost::iterator_core_access;
void increment()
{
boost::get<0>(v_) = vertices_->vertex( &boost::get<1>(v_), &boost::get<2>(v_));
}
bool equal( path_iterator const& other) const
{
return boost::get<0>(v_) == boost::get<0>(other.v_);
}
value_type const& dereference() const
{
return v_;
}
value_type v_;
const path_type *vertices_;
unsigned pos_;
};
}}
#endif // MAPNIK_VERTEX_ITERATOR_HPP
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