1 // <codecvt> -*- C++ -*- 2 3 // Copyright (C) 2015-2024 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 // ISO C++ 14882: 22.5 Standard code conversion facets 26 27 /** @file include/codecvt 28 * This is a Standard C++ Library header. 29 */ 30 31 #ifndef _GLIBCXX_CODECVT 32 #define _GLIBCXX_CODECVT 1 33 34 #pragma GCC system_header 35 36 #if __cplusplus < 201103L 37 # include <bits/c++0x_warning.h> 38 #else 39 40 #include <bits/locale_classes.h> 41 #include <bits/codecvt.h> 42 43 namespace std _GLIBCXX_VISIBILITY(default) 44 { 45 _GLIBCXX_BEGIN_NAMESPACE_VERSION 46 47 enum codecvt_mode 48 { 49 consume_header = 4, 50 generate_header = 2, 51 little_endian = 1 52 }; 53 54 template<typename _Elem, unsigned long _Maxcode = 0x10ffff, 55 codecvt_mode _Mode = (codecvt_mode)0> 56 class codecvt_utf8 : public codecvt<_Elem, char, mbstate_t> 57 { 58 public: 59 explicit 60 codecvt_utf8(size_t __refs = 0); 61 62 ~codecvt_utf8(); 63 }; 64 65 template<typename _Elem, unsigned long _Maxcode = 0x10ffff, 66 codecvt_mode _Mode = (codecvt_mode)0> 67 class codecvt_utf16 : public codecvt<_Elem, char, mbstate_t> 68 { 69 public: 70 explicit 71 codecvt_utf16(size_t __refs = 0); 72 73 ~codecvt_utf16(); 74 }; 75 76 template<typename _Elem, unsigned long _Maxcode = 0x10ffff, 77 codecvt_mode _Mode = (codecvt_mode)0> 78 class codecvt_utf8_utf16 : public codecvt<_Elem, char, mbstate_t> 79 { 80 public: 81 explicit 82 codecvt_utf8_utf16(size_t __refs = 0); 83 84 ~codecvt_utf8_utf16(); 85 }; 86 87 #define _GLIBCXX_CODECVT_SPECIALIZATION2(_NAME, _ELEM) \ 88 template<> \ 89 class _NAME<_ELEM> \ 90 : public codecvt<_ELEM, char, mbstate_t> \ 91 { \ 92 public: \ 93 typedef _ELEM intern_type; \ 94 typedef char extern_type; \ 95 typedef mbstate_t state_type; \ 96 \ 97 protected: \ 98 _NAME(unsigned long __maxcode, codecvt_mode __mode, size_t __refs) \ 99 : codecvt(__refs), _M_maxcode(__maxcode), _M_mode(__mode) { } \ 100 \ 101 virtual \ 102 ~_NAME(); \ 103 \ 104 virtual result \ 105 do_out(state_type& __state, const intern_type* __from, \ 106 const intern_type* __from_end, const intern_type*& __from_next, \ 107 extern_type* __to, extern_type* __to_end, \ 108 extern_type*& __to_next) const; \ 109 \ 110 virtual result \ 111 do_unshift(state_type& __state, \ 112 extern_type* __to, extern_type* __to_end, \ 113 extern_type*& __to_next) const; \ 114 \ 115 virtual result \ 116 do_in(state_type& __state, \ 117 const extern_type* __from, const extern_type* __from_end, \ 118 const extern_type*& __from_next, \ 119 intern_type* __to, intern_type* __to_end, \ 120 intern_type*& __to_next) const; \ 121 \ 122 virtual \ 123 int do_encoding() const throw(); \ 124 \ 125 virtual \ 126 bool do_always_noconv() const throw(); \ 127 \ 128 virtual \ 129 int do_length(state_type&, const extern_type* __from, \ 130 const extern_type* __end, size_t __max) const; \ 131 \ 132 virtual int \ 133 do_max_length() const throw(); \ 134 \ 135 private: \ 136 unsigned long _M_maxcode; \ 137 codecvt_mode _M_mode; \ 138 } 139 140 #define _GLIBCXX_CODECVT_SPECIALIZATION(_NAME, _ELEM) \ 141 _GLIBCXX_CODECVT_SPECIALIZATION2(__ ## _NAME ## _base, _ELEM); \ 142 template<unsigned long _Maxcode, codecvt_mode _Mode> \ 143 class _NAME<_ELEM, _Maxcode, _Mode> \ 144 : public __ ## _NAME ## _base<_ELEM> \ 145 { \ 146 public: \ 147 explicit \ 148 _NAME(size_t __refs = 0) \ 149 : __ ## _NAME ## _base<_ELEM>(std::min(_Maxcode, 0x10fffful), \ 150 _Mode, __refs) \ 151 { } \ 152 } 153 154 template<typename _Elem> class __codecvt_utf8_base; 155 template<typename _Elem> class __codecvt_utf16_base; 156 template<typename _Elem> class __codecvt_utf8_utf16_base; 157 158 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, char16_t); 159 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, char16_t); 160 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, char16_t); 161 162 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, char32_t); 163 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, char32_t); 164 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, char32_t); 165 166 #ifdef _GLIBCXX_USE_WCHAR_T 167 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8, wchar_t); 168 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf16, wchar_t); 169 _GLIBCXX_CODECVT_SPECIALIZATION(codecvt_utf8_utf16, wchar_t); 170 #endif 171 172 _GLIBCXX_END_NAMESPACE_VERSION 173 } // namespace 174 175 #endif // C++11 176 177 #endif /* _GLIBCXX_CODECVT */ 178
Indexes created Mon Mar 02 05:31:46 UTC 2026