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// Boost.Geometry
// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2017-2018, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_GEOMETRY_SRS_PROJECTIONS_PROJ4_HPP
#define BOOST_GEOMETRY_SRS_PROJECTIONS_PROJ4_HPP
#include <string>
#include <vector>
#include <boost/algorithm/string/trim.hpp>
namespace boost { namespace geometry
{
namespace srs
{
struct dynamic {};
struct proj4
{
explicit proj4(const char* s)
: m_str(s)
{}
explicit proj4(std::string const& s)
: m_str(s)
{}
std::string const& str() const
{
return m_str;
}
private:
std::string m_str;
};
namespace detail
{
struct proj4_parameter
{
proj4_parameter() {}
proj4_parameter(std::string const& n, std::string const& v) : name(n), value(v) {}
std::string name;
std::string value;
};
struct proj4_parameters
: std::vector<proj4_parameter>
{
// Initially implemented as part of pj_init_plus() and pj_init()
proj4_parameters(std::string const& proj4_str)
{
const char* sep = " +";
/* split into arguments based on '+' and trim white space */
// boost::split splits on one character, here it should be on " +", so implementation below
// todo: put in different routine or sort out
std::string def = boost::trim_copy(proj4_str);
boost::trim_left_if(def, boost::is_any_of(sep));
std::string::size_type loc = def.find(sep);
while (loc != std::string::npos)
{
std::string par = def.substr(0, loc);
boost::trim(par);
if (! par.empty())
{
this->add(par);
}
def.erase(0, loc);
boost::trim_left_if(def, boost::is_any_of(sep));
loc = def.find(sep);
}
if (! def.empty())
{
this->add(def);
}
}
void add(std::string const& str)
{
std::string name = str;
std::string value;
boost::trim_left_if(name, boost::is_any_of("+"));
std::string::size_type loc = name.find("=");
if (loc != std::string::npos)
{
value = name.substr(loc + 1);
name.erase(loc);
}
this->add(name, value);
}
void add(std::string const& name, std::string const& value)
{
this->push_back(proj4_parameter(name, value));
}
};
}
} // namespace srs
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_SRS_PROJECTIONS_PROJ4_HPP
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