git.sesse.net Git - casparcg/blob - dependencies/boost/boost/locale/encoding_utf.hpp

   1 //
   2 //  Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
   3 //
   4 //  Distributed under the Boost Software License, Version 1.0. (See
   5 //  accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 #ifndef BOOST_LOCALE_ENCODING_UTF_HPP_INCLUDED
   9 #define BOOST_LOCALE_ENCODING_UTF_HPP_INCLUDED
  10
  11 #include <boost/locale/utf.hpp>
  12 #include <boost/locale/encoding_errors.hpp>
  13 #include <iterator>
  14 #ifdef BOOST_MSVC
  15 #  pragma warning(push)
  16 #  pragma warning(disable : 4275 4251 4231 4660)
  17 #endif
  18
  19
  20
  21 namespace boost {
  22     namespace locale {
  23         namespace conv {
  24             ///
  25             /// \addtogroup codepage
  26             ///
  27             /// @{
  28
  29             ///
  30             /// Convert a Unicode text in range [begin,end) to other Unicode encoding
  31             ///
  32             template<typename CharOut,typename CharIn>
  33             std::basic_string<CharOut>
  34             utf_to_utf(CharIn const *begin,CharIn const *end,method_type how = default_method)
  35             {
  36                 std::basic_string<CharOut> result;
  37                 result.reserve(end-begin);
  38                 typedef std::back_insert_iterator<std::basic_string<CharOut> > inserter_type;
  39                 inserter_type inserter(result);
  40                 utf::code_point c;
  41                 while(begin!=end) {
  42                     c=utf::utf_traits<CharIn>::template decode<CharIn const *>(begin,end);
  43                     if(c==utf::illegal || c==utf::incomplete) {
  44                         if(how==stop)
  45                             throw conversion_error();
  46                     }
  47                     else {
  48                         utf::utf_traits<CharOut>::template encode<inserter_type>(c,inserter);
  49                     }
  50                 }
  51                 return result;
  52             }
  53
  54             ///
  55             /// Convert a Unicode NUL terminated string \a str other Unicode encoding
  56             ///
  57             template<typename CharOut,typename CharIn>
  58             std::basic_string<CharOut>
  59             utf_to_utf(CharIn const *str,method_type how = default_method)
  60             {
  61                 CharIn const *end = str;
  62                 while(*end)
  63                     end++;
  64                 return utf_to_utf<CharOut,CharIn>(str,end,how);
  65             }
  66
  67
  68             ///
  69             /// Convert a Unicode string \a str other Unicode encoding
  70             ///
  71             template<typename CharOut,typename CharIn>
  72             std::basic_string<CharOut>
  73             utf_to_utf(std::basic_string<CharIn> const &str,method_type how = default_method)
  74             {
  75                 return utf_to_utf<CharOut,CharIn>(str.c_str(),str.c_str()+str.size(),how);
  76             }
  77
  78
  79             /// @}
  80
  81         } // conv
  82
  83     } // locale
  84 } // boost
  85
  86 #ifdef BOOST_MSVC
  87 #pragma warning(pop)
  88 #endif
  89
  90 #endif
  91
  92 // vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
  93