/*****************************************************************************

*

* This file is part of Mapnik (c++ mapping toolkit)

*

* Copyright (C) 2014 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/util/conversions.hpp>

#include <mapnik/value_types.hpp>

#include <cstring>

#include <algorithm>

// karma is used by default

#define MAPNIK_KARMA_TO_STRING

#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Wunused-parameter"

#pragma GCC diagnostic ignored "-Wunused-local-typedef"

#include <boost/spirit/include/qi.hpp>

#ifdef MAPNIK_KARMA_TO_STRING

#include <boost/spirit/include/karma.hpp>

#endif

#pragma GCC diagnostic pop

#if _MSC_VER

#define snprintf _snprintf

#endif

namespace mapnik {

namespace util {

using namespace boost::spirit;

auto INTEGER = qi::int_type();

#ifdef BIGINT

auto LONGLONG = qi::long_long_type();

#endif

auto FLOAT = qi::float_type();

auto DOUBLE = qi::double_type();

bool string2bool(std::string const& value, bool & result)

{

if (value.empty() || value.size() > 5) {

return false;

} else if (value == "true") {

return result = true;

} else if (value == "false") {

result = false;

return true;

}

std::string val(value);

std::transform(val.begin(), val.end(), val.begin(), ::tolower);

if (val == "true" || val == "yes" || val == "1" || val == "on") {

return result = true;

} else if (val == "false" || val == "no" || val == "0" || val == "off") {

result = false;

return true;

}

return false;

}

bool string2bool(const char * iter, const char * end, bool & result)

{

std::string val(iter,end);

return string2bool(val,result);

}

bool string2int(const char * iter, const char * end, int & result)

{

ascii::space_type space;

bool r = qi::phrase_parse(iter,end,INTEGER,space,result);

return r && (iter == end);

}

bool string2int(std::string const& value, int & result)

{

ascii::space_type space;

std::string::const_iterator str_beg = value.begin();

std::string::const_iterator str_end = value.end();

bool r = qi::phrase_parse(str_beg,str_end,INTEGER,space,result);

return r && (str_beg == str_end);

}

#ifdef BIGINT

bool string2int(const char * iter, const char * end, mapnik::value_integer & result)

{

ascii::space_type space;

bool r = qi::phrase_parse(iter,end,LONGLONG,space,result);

return r && (iter == end);

}

bool string2int(std::string const& value, mapnik::value_integer & result)

{

ascii::space_type space;

std::string::const_iterator str_beg = value.begin();

std::string::const_iterator str_end = value.end();

bool r = qi::phrase_parse(str_beg,str_end,LONGLONG,space,result);

return r && (str_beg == str_end);

}

#endif

bool string2double(std::string const& value, double & result)

{

ascii::space_type space;

std::string::const_iterator str_beg = value.begin();

std::string::const_iterator str_end = value.end();

bool r = qi::phrase_parse(str_beg,str_end,DOUBLE,space,result);

return r && (str_beg == str_end);

}

bool string2double(const char * iter, const char * end, double & result)

{

ascii::space_type space;

bool r = qi::phrase_parse(iter,end,DOUBLE,space,result);

return r && (iter == end);

}

bool string2float(std::string const& value, float & result)

{

ascii::space_type space;

std::string::const_iterator str_beg = value.begin();

std::string::const_iterator str_end = value.end();

bool r = qi::phrase_parse(str_beg,str_end,FLOAT,space,result);

return r && (str_beg == str_end);

}

bool string2float(const char * iter, const char * end, float & result)

{

ascii::space_type space;

bool r = qi::phrase_parse(iter,end,FLOAT,space,result);

return r && (iter == end);

}

// double conversion - here we use sprintf over karma to work

// around https://github.com/mapnik/mapnik/issues/1741

bool to_string(std::string & s, double val)

{

s.resize(s.capacity());

while (true)

{

size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size()+1, "%g", val));

if (n2 <= s.size())

{

s.resize(n2);

break;

}

s.resize(n2);

}

return true;

}

#ifdef MAPNIK_KARMA_TO_STRING

bool to_string(std::string & str, int value)

{

namespace karma = boost::spirit::karma;

std::back_insert_iterator<std::string> sink(str);

return karma::generate(sink, value);

}

#ifdef BIGINT

bool to_string(std::string & str, mapnik::value_integer value)

{

namespace karma = boost::spirit::karma;

std::back_insert_iterator<std::string> sink(str);

return karma::generate(sink, value);

}

#endif

bool to_string(std::string & str, unsigned value)

{

namespace karma = boost::spirit::karma;

std::back_insert_iterator<std::string> sink(str);

return karma::generate(sink, value);

}

bool to_string(std::string & str, bool value)

{

namespace karma = boost::spirit::karma;

std::back_insert_iterator<std::string> sink(str);

return karma::generate(sink, value);

}

#else

bool to_string(std::string & s, int val)

{

s.resize(s.capacity());

while (true)

{

size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size()+1, "%d", val));

if (n2 <= s.size())

{

s.resize(n2);

break;

}

s.resize(n2);

}

return true;

}

#ifdef BIGINT

bool to_string(std::string & s, mapnik::value_integer val)

{

s.resize(s.capacity());

while (true)

{

size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size()+1, "%lld", val));

if (n2 <= s.size())

{

s.resize(n2);

break;

}

s.resize(n2);

}

return true;

}

#endif

bool to_string(std::string & s, unsigned val)

{

s.resize(s.capacity());

while (true)

{

size_t n2 = static_cast<size_t>(snprintf(&s[0], s.size()+1, "%u", val));

if (n2 <= s.size())

{

s.resize(n2);

break;

}

s.resize(n2);

}

return true;

}

bool to_string(std::string & s, bool val)

{

if (val) s = "true";

else s = "false";

return true;

}

#endif

} // end namespace util

}