mapnik/src/formatting/registry.cpp
2012-03-08 18:52:53 +01:00

58 lines
1.9 KiB
C++

/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2012 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/formatting/registry.hpp>
#include <mapnik/formatting/text.hpp>
#include <mapnik/formatting/format.hpp>
#include <mapnik/formatting/expression.hpp>
#include <mapnik/xml_tree.hpp>
#include <mapnik/config_error.hpp>
namespace mapnik
{
namespace formatting
{
registry::registry()
{
register_name("<xmltext>", &text_node::from_xml);
register_name("Format", &format_node::from_xml);
register_name("ExpressionFormat", &expression_format::from_xml);
}
void registry::register_name(std::string name, from_xml_function_ptr ptr, bool overwrite)
{
if (overwrite) {
map_[name] = ptr;
} else {
map_.insert(make_pair(name, ptr));
}
}
node_ptr registry::from_xml(xml_node const& xml)
{
std::map<std::string, from_xml_function_ptr>::const_iterator itr = map_.find(xml.name());
if (itr == map_.end()) throw config_error("Unknown element '" + xml.name() + "'", &xml);
return itr->second(xml);
}
} //ns formatting
} //ns mapnik