src/charset.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2017 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #include <boost/locale.hpp>
  22 #include "charset.h"
  23 #include "settings.h"
  24
  25 namespace Charset {
  26
  27 std::locale internalLocale()
  28 {
  29         boost::locale::generator gen;
  30         std::locale loc = gen("");
  31         bool is_utf = std::use_facet<boost::locale::info>(loc).utf8();
  32         std::string name = std::use_facet<boost::locale::info>(loc).name();
  33         if (!is_utf && name != "C" && name != "POSIX")
  34         {
  35                 // if current locale does not use unicode, use variant of this
  36                 // locale with utf8 as ncmpcpp uses utf8 internally and we need
  37                 // current locale for sorting, case conversions etc.
  38                 std::string new_name = std::use_facet<boost::locale::info>(loc).language()
  39                                      + "_"
  40                                      + std::use_facet<boost::locale::info>(loc).country()
  41                                      + ".UTF-8";
  42                 loc = gen(new_name);
  43         }
  44         return loc;
  45 }
  46
  47 std::string toUtf8From(const std::string &s, const char *charset)
  48 {
  49         return boost::locale::conv::to_utf<char>(s, charset);
  50 }
  51
  52 std::string fromUtf8To(const std::string &s, const char *charset)
  53 {
  54         return boost::locale::conv::to_utf<char>(s, charset);
  55 }
  56
  57 std::string utf8ToLocale(const std::string &s)
  58 {
  59         return Config.system_encoding.empty()
  60              ? s
  61              : boost::locale::conv::from_utf<char>(s, Config.system_encoding);
  62 }
  63
  64 std::string localeToUtf8(const std::string &s)
  65 {
  66         return Config.system_encoding.empty()
  67              ? s
  68              : boost::locale::conv::to_utf<char>(s, Config.system_encoding);
  69 }
  70
  71 std::string utf8ToLocale(std::string &&s)
  72 {
  73         if (!Config.system_encoding.empty())
  74                 s = boost::locale::conv::from_utf<char>(s, Config.system_encoding);
  75         return std::move(s);
  76 }
  77
  78 std::string localeToUtf8(std::string &&s)
  79 {
  80         if (!Config.system_encoding.empty())
  81                 s = boost::locale::conv::to_utf<char>(s, Config.system_encoding);
  82         return std::move(s);
  83 }
  84
  85 }