Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_SPIRIT_UC_TYPES_NOVEMBER_23_2008_0840PM)
Chris@16: #define BOOST_SPIRIT_UC_TYPES_NOVEMBER_23_2008_0840PM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/cstdint.hpp>
Chris@16: #include <boost/foreach.hpp>
Chris@16: #include <boost/regex/pending/unicode_iterator.hpp>
Chris@16: #include <boost/type_traits/make_unsigned.hpp>
Chris@16: #include <string>
Chris@16: 
Chris@16: namespace boost { namespace spirit
Chris@16: {
Chris@16:     typedef ::boost::uint32_t ucs4_char;
Chris@16:     typedef char utf8_char;
Chris@16:     typedef std::basic_string<ucs4_char> ucs4_string;
Chris@16:     typedef std::basic_string<utf8_char> utf8_string;
Chris@16: 
Chris@16:     template <typename Char>
Chris@16:     inline utf8_string to_utf8(Char value)
Chris@16:     {
Chris@16:         // always store as UTF8
Chris@16:         utf8_string result;
Chris@16:         typedef std::back_insert_iterator<utf8_string> insert_iter;
Chris@16:         insert_iter out_iter(result);
Chris@16:         utf8_output_iterator<insert_iter> utf8_iter(out_iter);
Chris@16:         typedef typename make_unsigned<Char>::type UChar;
Chris@16:         *utf8_iter = (UChar)value;
Chris@16:         return result;
Chris@16:     }
Chris@16: 
Chris@16:     template <typename Char>
Chris@16:     inline utf8_string to_utf8(Char const* str)
Chris@16:     {
Chris@16:         // always store as UTF8
Chris@16:         utf8_string result;
Chris@16:         typedef std::back_insert_iterator<utf8_string> insert_iter;
Chris@16:         insert_iter out_iter(result);
Chris@16:         utf8_output_iterator<insert_iter> utf8_iter(out_iter);
Chris@16:         typedef typename make_unsigned<Char>::type UChar;
Chris@16:         while (*str)
Chris@16:             *utf8_iter++ = (UChar)*str++;
Chris@16:         return result;
Chris@16:     }
Chris@16: 
Chris@16:     template <typename Char, typename Traits, typename Allocator>
Chris@16:     inline utf8_string 
Chris@16:     to_utf8(std::basic_string<Char, Traits, Allocator> const& str)
Chris@16:     {
Chris@16:         // always store as UTF8
Chris@16:         utf8_string result;
Chris@16:         typedef std::back_insert_iterator<utf8_string> insert_iter;
Chris@16:         insert_iter out_iter(result);
Chris@16:         utf8_output_iterator<insert_iter> utf8_iter(out_iter);
Chris@16:         typedef typename make_unsigned<Char>::type UChar;
Chris@16:         BOOST_FOREACH(Char ch, str)
Chris@16:         {
Chris@16:             *utf8_iter++ = (UChar)ch;
Chris@16:         }
Chris@16:         return result;
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #endif