cast_unicode_inl.h

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/**
 *
 *   Copyright 2005-2020 Pierre-Henri WUILLEMIN(@LIP6) & Christophe GONZALES(@AMU)
 *   info_at_agrum_dot_org
 *
 *  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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */


/**
 * @file
 * @brief Unicode helper functions.
 *
 * @author Christophe GONZALES(@AMU) and Pierre-Henri WUILLEMIN(@LIP6)
 */

#ifndef CAST_UNICODE_H
#define CAST_UNICODE_H

#include <iostream>
#include <locale>
#include <sstream>
#include <string>

#include <agrum/tools/core/cast_unicode.h>

INLINE std::wstring widen(const std::string& str) {
  std::wostringstream          wstm;
  const std::ctype< wchar_t >& ctfacet
     = std::use_facet< std::ctype< wchar_t > >(wstm.getloc());

  for (size_t i = 0; i < str.size(); ++i) {
    wstm << ctfacet.widen(str[i]);
  }

  return wstm.str();
}

INLINE std::string narrow(const std::wstring& str) {
  std::ostringstream        stm;
  const std::ctype< char >& ctfacet
     = std::use_facet< std::ctype< char > >(stm.getloc());

  for (std::size_t i = 0; i < str.size(); ++i) {
    stm << ctfacet.narrow(str[i], 0);
  }

  return stm.str();
}

#endif   // CAST_UNICODE_H