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add shape_utils

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Artem Pavlenko 2012-01-12 12:20:39 +00:00 committed by Artem Pavlenko
parent 0bb8adbbdc
commit 159a69a0bb
2 changed files with 113 additions and 0 deletions
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73
plugins/input/shape/shape_utils.cpp Normal file
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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
*
*****************************************************************************/
// mapnik
#include <mapnik/datasource.hpp>
#include "shape_utils.hpp"
// boost
#include <boost/algorithm/string.hpp>
// stl
#include <sstream>
#include <iostream>
void setup_attributes(mapnik::context_ptr const& ctx,
std::set<std::string> const& names,
std::string const& shape_name,
shape_io & shape,
std::vector<int> & attr_ids)
{
std::set<std::string>::const_iterator pos = names.begin();
std::set<std::string>::const_iterator end = names.end();
for ( ;pos !=end; ++pos)
{
bool found_name = false;
for (int i = 0; i < shape.dbf().num_fields(); ++i)
{
if (shape.dbf().descriptor(i).name_ == *pos)
{
ctx->push(*pos);
attr_ids.push_back(i);
found_name = true;
break;
}
}
if (! found_name)
{
std::ostringstream s;
s << "no attribute '" << *pos << "' in '"
<< shape_name << "'. Valid attributes are: ";
std::vector<std::string> list;
for (int i = 0; i < shape.dbf().num_fields(); ++i)
{
list.push_back(shape.dbf().descriptor(i).name_);
}
s << boost::algorithm::join(list, ",") << ".";
throw mapnik::datasource_exception("Shape Plugin: " + s.str());
}
}
}

40
plugins/input/shape/shape_utils.hpp Normal file
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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 SHAPE_UTILS_HPP
#define SHAPE_UTILS_HPP
// mapnik
#include <mapnik/feature.hpp>
#include "shape_io.hpp"
// stl
#include <set>
#include <vector>
#include <string>
void setup_attributes(mapnik::context_ptr const& ctx,
std::set<std::string> const& names,
std::string const& shape_name,
shape_io & shape,
std::vector<int> & attr_ids);
#endif // SHAPE_UTILS_HPP