boost/archive/basic_streambuf_locale_saver.hpp

   1 #ifndef BOOST_ARCHIVE_BASIC_STREAMBUF_LOCALE_SAVER_HPP
   2 #define BOOST_ARCHIVE_BASIC_STREAMBUF_LOCALE_SAVER_HPP
   3
   4 // MS compatible compilers support #pragma once
   5 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
   6 # pragma once
   7 #endif
   8
   9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  10 // basic_streambuf_local_saver.hpp
  11
  12 // (C) Copyright 2005 Robert Ramey - http://www.rrsd.com
  13
  14 // Use, modification and distribution is subject to the Boost Software
  15 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  16 // http://www.boost.org/LICENSE_1_0.txt)
  17
  18 //  See http://www.boost.org for updates, documentation, and revision history.
  19
  20 // note derived from boost/io/ios_state.hpp
  21 // Copyright 2002, 2005 Daryle Walker.  Use, modification, and distribution
  22 // are subject to the Boost Software License, Version 1.0.  (See accompanying
  23 // file LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
  24
  25 //  See <http://www.boost.org/libs/io/> for the library's home page.
  26
  27 #ifndef BOOST_NO_STD_LOCALE
  28
  29 #include <locale>     // for std::locale
  30 #include <streambuf>  // for std::basic_streambuf
  31
  32 namespace boost{
  33 namespace archive{
  34
  35 template < typename Ch, class Tr >
  36 class basic_streambuf_locale_saver
  37 {
  38 public:
  39     typedef ::std::basic_streambuf<Ch, Tr> state_type;
  40     typedef ::std::locale aspect_type;
  41     explicit basic_streambuf_locale_saver( state_type &s )
  42         : s_save_( s ), a_save_( s.getloc() )
  43         {}
  44     basic_streambuf_locale_saver( state_type &s, aspect_type const &a )
  45         : s_save_( s ), a_save_( s.pubimbue(a) )
  46         {}
  47     ~basic_streambuf_locale_saver()
  48         { this->restore(); }
  49     void  restore()
  50         { s_save_.pubimbue( a_save_ ); }
  51 private:
  52     state_type &       s_save_;
  53     aspect_type const  a_save_;
  54 };
  55
  56 } // archive
  57 } // boost
  58
  59 #endif // BOOST_NO_STD_LOCALE
  60 #endif // BOOST_ARCHIVE_BASIC_STREAMBUF_LOCALE_SAVER_HPP