text: /*
   *          Copyright Andrey Semashev 2007 - 2014.
   * Distributed under 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)
   */
  /*!
   * \file   code_conversion.hpp
   * \author Andrey Semashev
   * \date   08.11.2008
   *
   * \brief  This header is the Boost.Log library implementation, see the library documentation
   *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
   */
  
  #ifndef BOOST_LOG_DETAIL_CODE_CONVERSION_HPP_INCLUDED_
  #define BOOST_LOG_DETAIL_CODE_CONVERSION_HPP_INCLUDED_
  
  #include <locale>
  #include <string>
  #include <boost/log/detail/config.hpp>
  #include <boost/log/detail/header.hpp>
  
  #ifdef BOOST_HAS_PRAGMA_ONCE
  #pragma once
  #endif
  
  namespace boost {
  
  BOOST_LOG_OPEN_NAMESPACE
  
  namespace aux {
  
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const wchar_t* str1, std::size_t len, std::string& str2, std::locale const& loc = std::locale());
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const char* str1, std::size_t len, std::wstring& str2, std::locale const& loc = std::locale());
  #if !defined(BOOST_NO_CXX11_CHAR16_T)
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const char16_t* str1, std::size_t len, std::string& str2, std::locale const& loc = std::locale());
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const char* str1, std::size_t len, std::u16string& str2, std::locale const& loc = std::locale());
  #endif
  #if !defined(BOOST_NO_CXX11_CHAR32_T)
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const char32_t* str1, std::size_t len, std::string& str2, std::locale const& loc = std::locale());
  //! The function converts one string to the character type of another
  BOOST_LOG_API void code_convert(const char* str1, std::size_t len, std::u32string& str2, std::locale const& loc = std::locale());
  #endif
  
  //! The function converts one string to the character type of another
  template< typename CharT, typename SourceTraitsT, typename SourceAllocatorT, typename TargetTraitsT, typename TargetAllocatorT >
  inline void code_convert(std::basic_string< CharT, SourceTraitsT, SourceAllocatorT > const& str1, std::basic_string< CharT, TargetTraitsT, TargetAllocatorT >& str2, std::locale const& = std::locale())
  {
      str2.append(str1.c_str(), str1.size());
  }
  //! The function converts one string to the character type of another
  template< typename CharT, typename TargetTraitsT, typename TargetAllocatorT >
  inline void code_convert(const CharT* str1, std::size_t len, std::basic_string< CharT, TargetTraitsT, TargetAllocatorT >& str2, std::locale const& = std::locale())
  {
      str2.append(str1, len);
  }
  
  //! The function converts one string to the character type of another
  template< typename SourceCharT, typename SourceTraitsT, typename SourceAllocatorT, typename TargetCharT, typename TargetTraitsT, typename TargetAllocatorT >
  inline void code_convert(std::basic_string< SourceCharT, SourceTraitsT, SourceAllocatorT > const& str1, std::basic_string< TargetCharT, TargetTraitsT, TargetAllocatorT >& str2, std::locale const& loc = std::locale())
  {
      aux::code_convert(str1.c_str(), str1.size(), str2, loc);
  }
  
  //! The function converts the passed string to the narrow-character encoding
  inline std::string const& to_narrow(std::string const& str)
  {
      return str;
  }
  
  //! The function converts the passed string to the narrow-character encoding
  inline std::string const& to_narrow(std::string const& str, std::locale const&)
  {
      return str;
  }
  
  //! The function converts the passed string to the narrow-character encoding
  inline std::string to_narrow(std::wstring const& str, std::locale const& loc = std::locale())
  {
      std::string res;
      aux::code_convert(str, res, loc);
      return res;
  }
  
  //! The function converts the passed string to the wide-character encoding
  inline std::wstring const& to_wide(std::wstring const& str)
  {
      return str;
  }
  
  //! The function converts the passed string to the wide-character encoding
  inline std::wstring const& to_wide(std::wstring const& str, std::locale const&)
  {
      return str;
  }
  
  //! The function converts the passed string to the wide-character encoding
  inline std::wstring to_wide(std::string const& str, std::locale const& loc = std::locale())
  {
      std::wstring res;
      aux::code_convert(str, res, loc);
      return res;
  }
  
  } // namespace aux
  
  BOOST_LOG_CLOSE_NAMESPACE // namespace log
  
  } // namespace boost
  
  #include <boost/log/detail/footer.hpp>
  
  #endif // BOOST_LOG_DETAIL_CODE_CONVERSION_HPP_INCLUDED_
  