162 lines
3.8 KiB
C++
162 lines
3.8 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) 2016 Artem Pavlenko
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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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// mapnik
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#include <mapnik/util/conversions.hpp>
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#include <mapnik/value/types.hpp>
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#include <algorithm>
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#include <cstring>
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// karma is used by default
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#define MAPNIK_KARMA_TO_STRING
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore.hpp>
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#ifdef MAPNIK_KARMA_TO_STRING
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#include <boost/spirit/include/karma.hpp>
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#endif
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#pragma GCC diagnostic pop
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#if _MSC_VER
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#define snprintf _snprintf
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#endif
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namespace mapnik { namespace util {
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using namespace boost::spirit;
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// double conversion - here we use sprintf over karma to work
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// around https://github.com/mapnik/mapnik/issues/1741
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bool to_string(std::string& s, double val)
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{
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s.resize(s.capacity());
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while (true)
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{
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size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size() + 1, "%g", val));
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if (n2 <= s.size())
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{
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s.resize(n2);
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break;
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}
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s.resize(n2);
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}
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return true;
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}
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#ifdef MAPNIK_KARMA_TO_STRING
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bool to_string(std::string& str, int value)
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{
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namespace karma = boost::spirit::karma;
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std::back_insert_iterator<std::string> sink(str);
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return karma::generate(sink, value);
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}
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#ifdef BIGINT
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bool to_string(std::string& str, mapnik::value_integer value)
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{
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namespace karma = boost::spirit::karma;
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std::back_insert_iterator<std::string> sink(str);
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return karma::generate(sink, value);
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}
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#endif
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bool to_string(std::string& str, unsigned value)
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{
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namespace karma = boost::spirit::karma;
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std::back_insert_iterator<std::string> sink(str);
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return karma::generate(sink, value);
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}
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bool to_string(std::string& str, bool value)
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{
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namespace karma = boost::spirit::karma;
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std::back_insert_iterator<std::string> sink(str);
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return karma::generate(sink, value);
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}
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#else
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bool to_string(std::string& s, int val)
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{
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s.resize(s.capacity());
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while (true)
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{
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size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size() + 1, "%d", val));
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if (n2 <= s.size())
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{
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s.resize(n2);
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break;
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}
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s.resize(n2);
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}
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return true;
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}
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#ifdef BIGINT
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bool to_string(std::string& s, mapnik::value_integer val)
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{
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s.resize(s.capacity());
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while (true)
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{
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size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size() + 1, "%lld", val));
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if (n2 <= s.size())
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{
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s.resize(n2);
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break;
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}
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s.resize(n2);
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}
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return true;
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}
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#endif
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bool to_string(std::string& s, unsigned val)
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{
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s.resize(s.capacity());
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while (true)
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{
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size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size() + 1, "%u", val));
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if (n2 <= s.size())
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{
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s.resize(n2);
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break;
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}
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s.resize(n2);
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}
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return true;
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}
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bool to_string(std::string& s, bool val)
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{
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if (val)
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s = "true";
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else
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s = "false";
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return true;
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}
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#endif
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} // end namespace util
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}
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