1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CWCHAR 11#define _LIBCPP_CWCHAR 12 13/* 14 cwchar synopsis 15 16Macros: 17 18 NULL 19 WCHAR_MAX 20 WCHAR_MIN 21 WEOF 22 23namespace std 24{ 25 26Types: 27 28 mbstate_t 29 size_t 30 tm 31 wint_t 32 33int fwprintf(FILE* restrict stream, const wchar_t* restrict format, ...); 34int fwscanf(FILE* restrict stream, const wchar_t* restrict format, ...); 35int swprintf(wchar_t* restrict s, size_t n, const wchar_t* restrict format, ...); 36int swscanf(const wchar_t* restrict s, const wchar_t* restrict format, ...); 37int vfwprintf(FILE* restrict stream, const wchar_t* restrict format, va_list arg); 38int vfwscanf(FILE* restrict stream, const wchar_t* restrict format, va_list arg); // C99 39int vswprintf(wchar_t* restrict s, size_t n, const wchar_t* restrict format, va_list arg); 40int vswscanf(const wchar_t* restrict s, const wchar_t* restrict format, va_list arg); // C99 41int vwprintf(const wchar_t* restrict format, va_list arg); 42int vwscanf(const wchar_t* restrict format, va_list arg); // C99 43int wprintf(const wchar_t* restrict format, ...); 44int wscanf(const wchar_t* restrict format, ...); 45wint_t fgetwc(FILE* stream); 46wchar_t* fgetws(wchar_t* restrict s, int n, FILE* restrict stream); 47wint_t fputwc(wchar_t c, FILE* stream); 48int fputws(const wchar_t* restrict s, FILE* restrict stream); 49int fwide(FILE* stream, int mode); 50wint_t getwc(FILE* stream); 51wint_t getwchar(); 52wint_t putwc(wchar_t c, FILE* stream); 53wint_t putwchar(wchar_t c); 54wint_t ungetwc(wint_t c, FILE* stream); 55double wcstod(const wchar_t* restrict nptr, wchar_t** restrict endptr); 56float wcstof(const wchar_t* restrict nptr, wchar_t** restrict endptr); // C99 57long double wcstold(const wchar_t* restrict nptr, wchar_t** restrict endptr); // C99 58long wcstol(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base); 59long long wcstoll(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base); // C99 60unsigned long wcstoul(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base); 61unsigned long long wcstoull(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base); // C99 62wchar_t* wcscpy(wchar_t* restrict s1, const wchar_t* restrict s2); 63wchar_t* wcsncpy(wchar_t* restrict s1, const wchar_t* restrict s2, size_t n); 64wchar_t* wcscat(wchar_t* restrict s1, const wchar_t* restrict s2); 65wchar_t* wcsncat(wchar_t* restrict s1, const wchar_t* restrict s2, size_t n); 66int wcscmp(const wchar_t* s1, const wchar_t* s2); 67int wcscoll(const wchar_t* s1, const wchar_t* s2); 68int wcsncmp(const wchar_t* s1, const wchar_t* s2, size_t n); 69size_t wcsxfrm(wchar_t* restrict s1, const wchar_t* restrict s2, size_t n); 70const wchar_t* wcschr(const wchar_t* s, wchar_t c); 71 wchar_t* wcschr( wchar_t* s, wchar_t c); 72size_t wcscspn(const wchar_t* s1, const wchar_t* s2); 73size_t wcslen(const wchar_t* s); 74const wchar_t* wcspbrk(const wchar_t* s1, const wchar_t* s2); 75 wchar_t* wcspbrk( wchar_t* s1, const wchar_t* s2); 76const wchar_t* wcsrchr(const wchar_t* s, wchar_t c); 77 wchar_t* wcsrchr( wchar_t* s, wchar_t c); 78size_t wcsspn(const wchar_t* s1, const wchar_t* s2); 79const wchar_t* wcsstr(const wchar_t* s1, const wchar_t* s2); 80 wchar_t* wcsstr( wchar_t* s1, const wchar_t* s2); 81wchar_t* wcstok(wchar_t* restrict s1, const wchar_t* restrict s2, wchar_t** restrict ptr); 82const wchar_t* wmemchr(const wchar_t* s, wchar_t c, size_t n); 83 wchar_t* wmemchr( wchar_t* s, wchar_t c, size_t n); 84int wmemcmp(wchar_t* restrict s1, const wchar_t* restrict s2, size_t n); 85wchar_t* wmemcpy(wchar_t* restrict s1, const wchar_t* restrict s2, size_t n); 86wchar_t* wmemmove(wchar_t* s1, const wchar_t* s2, size_t n); 87wchar_t* wmemset(wchar_t* s, wchar_t c, size_t n); 88size_t wcsftime(wchar_t* restrict s, size_t maxsize, const wchar_t* restrict format, 89 const tm* restrict timeptr); 90wint_t btowc(int c); 91int wctob(wint_t c); 92int mbsinit(const mbstate_t* ps); 93size_t mbrlen(const char* restrict s, size_t n, mbstate_t* restrict ps); 94size_t mbrtowc(wchar_t* restrict pwc, const char* restrict s, size_t n, mbstate_t* restrict ps); 95size_t wcrtomb(char* restrict s, wchar_t wc, mbstate_t* restrict ps); 96size_t mbsrtowcs(wchar_t* restrict dst, const char** restrict src, size_t len, 97 mbstate_t* restrict ps); 98size_t wcsrtombs(char* restrict dst, const wchar_t** restrict src, size_t len, 99 mbstate_t* restrict ps); 100 101} // std 102 103*/ 104 105#include <__assert> // all public C++ headers provide the assertion handler 106#include <__config> 107#include <__type_traits/apply_cv.h> 108#include <__type_traits/is_constant_evaluated.h> 109#include <__type_traits/is_equality_comparable.h> 110#include <__type_traits/is_same.h> 111#include <__type_traits/remove_cv.h> 112#include <cwctype> 113 114#include <wchar.h> 115 116#ifndef _LIBCPP_WCHAR_H 117# error <cwchar> tried including <wchar.h> but didn't find libc++'s <wchar.h> header. \ 118 This usually means that your header search paths are not configured properly. \ 119 The header search paths should contain the C++ Standard Library headers before \ 120 any C Standard Library, and you are probably using compiler flags that make that \ 121 not be the case. 122#endif 123 124#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 125# pragma GCC system_header 126#endif 127 128_LIBCPP_BEGIN_NAMESPACE_STD 129 130using ::mbstate_t _LIBCPP_USING_IF_EXISTS; 131using ::size_t _LIBCPP_USING_IF_EXISTS; 132using ::tm _LIBCPP_USING_IF_EXISTS; 133using ::wint_t _LIBCPP_USING_IF_EXISTS; 134using ::FILE _LIBCPP_USING_IF_EXISTS; 135using ::fwprintf _LIBCPP_USING_IF_EXISTS; 136using ::fwscanf _LIBCPP_USING_IF_EXISTS; 137using ::swprintf _LIBCPP_USING_IF_EXISTS; 138using ::vfwprintf _LIBCPP_USING_IF_EXISTS; 139using ::vswprintf _LIBCPP_USING_IF_EXISTS; 140using ::swscanf _LIBCPP_USING_IF_EXISTS; 141using ::vfwscanf _LIBCPP_USING_IF_EXISTS; 142using ::vswscanf _LIBCPP_USING_IF_EXISTS; 143using ::fgetwc _LIBCPP_USING_IF_EXISTS; 144using ::fgetws _LIBCPP_USING_IF_EXISTS; 145using ::fputwc _LIBCPP_USING_IF_EXISTS; 146using ::fputws _LIBCPP_USING_IF_EXISTS; 147using ::fwide _LIBCPP_USING_IF_EXISTS; 148using ::getwc _LIBCPP_USING_IF_EXISTS; 149using ::putwc _LIBCPP_USING_IF_EXISTS; 150using ::ungetwc _LIBCPP_USING_IF_EXISTS; 151using ::wcstod _LIBCPP_USING_IF_EXISTS; 152using ::wcstof _LIBCPP_USING_IF_EXISTS; 153using ::wcstold _LIBCPP_USING_IF_EXISTS; 154using ::wcstol _LIBCPP_USING_IF_EXISTS; 155using ::wcstoll _LIBCPP_USING_IF_EXISTS; 156using ::wcstoul _LIBCPP_USING_IF_EXISTS; 157using ::wcstoull _LIBCPP_USING_IF_EXISTS; 158using ::wcscpy _LIBCPP_USING_IF_EXISTS; 159using ::wcsncpy _LIBCPP_USING_IF_EXISTS; 160using ::wcscat _LIBCPP_USING_IF_EXISTS; 161using ::wcsncat _LIBCPP_USING_IF_EXISTS; 162using ::wcscmp _LIBCPP_USING_IF_EXISTS; 163using ::wcscoll _LIBCPP_USING_IF_EXISTS; 164using ::wcsncmp _LIBCPP_USING_IF_EXISTS; 165using ::wcsxfrm _LIBCPP_USING_IF_EXISTS; 166using ::wcschr _LIBCPP_USING_IF_EXISTS; 167using ::wcspbrk _LIBCPP_USING_IF_EXISTS; 168using ::wcsrchr _LIBCPP_USING_IF_EXISTS; 169using ::wcsstr _LIBCPP_USING_IF_EXISTS; 170using ::wmemchr _LIBCPP_USING_IF_EXISTS; 171using ::wcscspn _LIBCPP_USING_IF_EXISTS; 172using ::wcslen _LIBCPP_USING_IF_EXISTS; 173using ::wcsspn _LIBCPP_USING_IF_EXISTS; 174using ::wcstok _LIBCPP_USING_IF_EXISTS; 175using ::wmemcmp _LIBCPP_USING_IF_EXISTS; 176using ::wmemcpy _LIBCPP_USING_IF_EXISTS; 177using ::wmemmove _LIBCPP_USING_IF_EXISTS; 178using ::wmemset _LIBCPP_USING_IF_EXISTS; 179using ::wcsftime _LIBCPP_USING_IF_EXISTS; 180using ::btowc _LIBCPP_USING_IF_EXISTS; 181using ::wctob _LIBCPP_USING_IF_EXISTS; 182using ::mbsinit _LIBCPP_USING_IF_EXISTS; 183using ::mbrlen _LIBCPP_USING_IF_EXISTS; 184using ::mbrtowc _LIBCPP_USING_IF_EXISTS; 185using ::wcrtomb _LIBCPP_USING_IF_EXISTS; 186using ::mbsrtowcs _LIBCPP_USING_IF_EXISTS; 187using ::wcsrtombs _LIBCPP_USING_IF_EXISTS; 188 189using ::getwchar _LIBCPP_USING_IF_EXISTS; 190using ::vwscanf _LIBCPP_USING_IF_EXISTS; 191using ::wscanf _LIBCPP_USING_IF_EXISTS; 192 193using ::putwchar _LIBCPP_USING_IF_EXISTS; 194using ::vwprintf _LIBCPP_USING_IF_EXISTS; 195using ::wprintf _LIBCPP_USING_IF_EXISTS; 196 197inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 size_t __constexpr_wcslen(const wchar_t* __str) { 198#if __has_builtin(__builtin_wcslen) 199 return __builtin_wcslen(__str); 200#else 201 if (!__libcpp_is_constant_evaluated()) 202 return std::wcslen(__str); 203 204 size_t __len = 0; 205 for (; *__str != L'\0'; ++__str) 206 ++__len; 207 return __len; 208#endif 209} 210 211inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int 212__constexpr_wmemcmp(const wchar_t* __lhs, const wchar_t* __rhs, size_t __count) { 213#if __has_builtin(__builtin_wmemcmp) 214 return __builtin_wmemcmp(__lhs, __rhs, __count); 215#else 216 if (!__libcpp_is_constant_evaluated()) 217 return std::wmemcmp(__lhs, __rhs, __count); 218 219 for (; __count; --__count, ++__lhs, ++__rhs) { 220 if (*__lhs < *__rhs) 221 return -1; 222 if (*__rhs < *__lhs) 223 return 1; 224 } 225 return 0; 226#endif 227} 228 229template <class _Tp, class _Up> 230_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* __constexpr_wmemchr(_Tp* __str, _Up __value, size_t __count) { 231 static_assert(sizeof(_Tp) == sizeof(wchar_t)&& _LIBCPP_ALIGNOF(_Tp) >= _LIBCPP_ALIGNOF(wchar_t) && 232 __libcpp_is_trivially_equality_comparable<_Tp, _Tp>::value, 233 "Calling wmemchr on non-trivially equality comparable types is unsafe."); 234 235#if __has_builtin(__builtin_wmemchr) 236 if (!__libcpp_is_constant_evaluated()) { 237 wchar_t __value_buffer = 0; 238 __builtin_memcpy(&__value_buffer, &__value, sizeof(wchar_t)); 239 return reinterpret_cast<_Tp*>( 240 __builtin_wmemchr(reinterpret_cast<__apply_cv_t<_Tp, wchar_t>*>(__str), __value_buffer, __count)); 241 } 242# if _LIBCPP_STD_VER >= 17 243 else if constexpr (is_same_v<remove_cv_t<_Tp>, wchar_t>) 244 return __builtin_wmemchr(__str, __value, __count); 245# endif 246#endif // __has_builtin(__builtin_wmemchr) 247 248 for (; __count; --__count) { 249 if (*__str == __value) 250 return __str; 251 ++__str; 252 } 253 return nullptr; 254} 255 256_LIBCPP_END_NAMESPACE_STD 257 258#endif // _LIBCPP_CWCHAR 259