8d9254fc8a
From-SVN: r279813
178 lines
5.2 KiB
C++
178 lines
5.2 KiB
C++
// <codecvt> -*- C++ -*-
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// Copyright (C) 2015-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// ISO C++ 14882: 22.5 Standard code conversion facets
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/** @file include/codecvt
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* This is a Standard C++ Library header.
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*/
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#ifndef _GLIBCXX_CODECVT
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#define _GLIBCXX_CODECVT 1
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#pragma GCC system_header
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#if __cplusplus < 201103L
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# include <bits/c++0x_warning.h>
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#else
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#include <bits/locale_classes.h>
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#include <bits/codecvt.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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enum codecvt_mode
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{
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consume_header = 4,
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generate_header = 2,
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little_endian = 1
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};
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template<typename _Elem, unsigned long _Maxcode = 0x10ffff,
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codecvt_mode _Mode = (codecvt_mode)0>
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class codecvt_utf8 : public codecvt<_Elem, char, mbstate_t>
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{
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public:
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explicit
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codecvt_utf8(size_t __refs = 0);
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~codecvt_utf8();
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};
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template<typename _Elem, unsigned long _Maxcode = 0x10ffff,
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codecvt_mode _Mode = (codecvt_mode)0>
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class codecvt_utf16 : public codecvt<_Elem, char, mbstate_t>
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{
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public:
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explicit
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codecvt_utf16(size_t __refs = 0);
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~codecvt_utf16();
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};
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template<typename _Elem, unsigned long _Maxcode = 0x10ffff,
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codecvt_mode _Mode = (codecvt_mode)0>
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class codecvt_utf8_utf16 : public codecvt<_Elem, char, mbstate_t>
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{
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public:
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explicit
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codecvt_utf8_utf16(size_t __refs = 0);
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~codecvt_utf8_utf16();
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};
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#define _GLIBCXX_CODECVT_SPECIALIZATION2(_NAME, _ELEM) \
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template<> \
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class _NAME<_ELEM> \
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: public codecvt<_ELEM, char, mbstate_t> \
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{ \
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public: \
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typedef _ELEM intern_type; \
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typedef char extern_type; \
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typedef mbstate_t state_type; \
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\
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protected: \
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_NAME(unsigned long __maxcode, codecvt_mode __mode, size_t __refs) \
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: codecvt(__refs), _M_maxcode(__maxcode), _M_mode(__mode) { } \
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\
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virtual \
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~_NAME(); \
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\
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virtual result \
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do_out(state_type& __state, const intern_type* __from, \
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const intern_type* __from_end, const intern_type*& __from_next, \
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extern_type* __to, extern_type* __to_end, \
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extern_type*& __to_next) const; \
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\
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virtual result \
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do_unshift(state_type& __state, \
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extern_type* __to, extern_type* __to_end, \
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extern_type*& __to_next) const; \
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\
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virtual result \
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do_in(state_type& __state, \
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const extern_type* __from, const extern_type* __from_end, \
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const extern_type*& __from_next, \
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intern_type* __to, intern_type* __to_end, \
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intern_type*& __to_next) const; \
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\
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virtual \
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int do_encoding() const throw(); \
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\
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virtual \
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bool do_always_noconv() const throw(); \
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\
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virtual \
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int do_length(state_type&, const extern_type* __from, \
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const extern_type* __end, size_t __max) const; \
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\
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virtual int \
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do_max_length() const throw(); \
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\
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private: \
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unsigned long _M_maxcode; \
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codecvt_mode _M_mode; \
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}
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#define _GLIBCXX_CODECVT_SPECIALIZATION(_NAME, _ELEM) \
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_GLIBCXX_CODECVT_SPECIALIZATION2(__ ## _NAME ## _base, _ELEM); \
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template<unsigned long _Maxcode, codecvt_mode _Mode> \
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class _NAME<_ELEM, _Maxcode, _Mode> \
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: public __ ## _NAME ## _base<_ELEM> \
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{ \
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public: \
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explicit \
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_NAME(size_t __refs = 0) \
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: __ ## _NAME ## _base<_ELEM>(std::min(_Maxcode, 0x10fffful), \
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_Mode, __refs) \
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{ } \
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}
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template<typename _Elem> class __codecvt_utf8_base;
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template<typename _Elem> class __codecvt_utf16_base;
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template<typename _Elem> class __codecvt_utf8_utf16_base;
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, char16_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, char16_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, char16_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, char32_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, char32_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, char32_t);
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#ifdef _GLIBCXX_USE_WCHAR_T
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, wchar_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, wchar_t);
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_GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, wchar_t);
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#endif
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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#endif // C++11
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#endif /* _GLIBCXX_CODECVT */
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