1 | // <codecvt> -*- C++ -*- |
2 | |
3 | // Copyright (C) 2015-2021 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 | = 4, |
50 | = 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 | |