89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
// unicode.hh
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// This file is part of libpbe; see http://anyterm.org/
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// (C) 2008 Philip Endecott
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// Distributed under the Boost Software License, Version 1.0:
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef libpbe_charset_conv_unicode_hh
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#define libpbe_charset_conv_unicode_hh
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#include "charset/charset_t.hh"
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#include "charset/char_conv.hh"
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#include "charset/char_t.hh"
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namespace pbe {
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// Unicode character conversion
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// ----------------------------
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//
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// This file provides specialisation of char_conv for the Unicode
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// character types.
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// Note that UTF-8 and UTF-16 characters are 32-bit characters here,
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// not groups of units.
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// Everything is trivial except conversion to ucs2.
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// UTF16 has not been implemented yet.
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IDENTITY_CHAR_CONV(cs::ucs2,cs::ucs4)
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IDENTITY_CHAR_CONV(cs::ucs2,cs::utf8)
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//IDENTITY_CHAR_CONV(cs::ucs2,cs::utf16)
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IDENTITY_CHAR_CONV(cs::ucs4,cs::utf8)
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//IDENTITY_CHAR_CONV(cs::ucs4,cs::utf16)
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IDENTITY_CHAR_CONV(cs::utf8,cs::ucs4)
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//IDENTITY_CHAR_CONV(cs::utf8,cs::utf16)
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//IDENTITY_CHAR_CONV(cs::utf16,cs::ucs4)
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//IDENTITY_CHAR_CONV(cs::utf16,cs::utf8)
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#define CONV_TO_UCS2(FROM_CS) \
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template <typename error_policy> \
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struct char_conv<FROM_CS,cs::ucs2,error_policy> { \
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char16_t \
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operator() ( charset_traits<FROM_CS>::char_t c, \
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charset_traits<FROM_CS>::state_t&, \
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charset_traits<cs::ucs2>::state_t& ) { \
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if (c>0xffff) { \
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return error_policy::no_equivalent(); \
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} \
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return c; \
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} \
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};
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CONV_TO_UCS2(cs::ucs4)
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CONV_TO_UCS2(cs::utf8)
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//CONV_TO_UCS2(cs::utf16)
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#undef CONV_TO_UCS2
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};
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#endif
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