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 <__config> 106#include <__type_traits/copy_cv.h> 107#include <__type_traits/is_constant_evaluated.h> 108#include <__type_traits/is_equality_comparable.h> 109#include <__type_traits/is_same.h> 110#include <__type_traits/remove_cv.h> 111#include <cwctype> 112 113#include <wchar.h> 114 115#ifndef _LIBCPP_WCHAR_H 116# error <cwchar> tried including <wchar.h> but didn't find libc++'s <wchar.h> header. \ 117 This usually means that your header search paths are not configured properly. \ 118 The header search paths should contain the C++ Standard Library headers before \ 119 any C Standard Library, and you are probably using compiler flags that make that \ 120 not be the case. 121#endif 122 123#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 124# pragma GCC system_header 125#endif 126 127_LIBCPP_BEGIN_NAMESPACE_STD 128 129using ::mbstate_t _LIBCPP_USING_IF_EXISTS; 130using ::size_t _LIBCPP_USING_IF_EXISTS; 131using ::tm _LIBCPP_USING_IF_EXISTS; 132using ::wint_t _LIBCPP_USING_IF_EXISTS; 133using ::FILE _LIBCPP_USING_IF_EXISTS; 134using ::fwprintf _LIBCPP_USING_IF_EXISTS; 135using ::fwscanf _LIBCPP_USING_IF_EXISTS; 136using ::swprintf _LIBCPP_USING_IF_EXISTS; 137using ::vfwprintf _LIBCPP_USING_IF_EXISTS; 138using ::vswprintf _LIBCPP_USING_IF_EXISTS; 139using ::swscanf _LIBCPP_USING_IF_EXISTS; 140using ::vfwscanf _LIBCPP_USING_IF_EXISTS; 141using ::vswscanf _LIBCPP_USING_IF_EXISTS; 142using ::fgetwc _LIBCPP_USING_IF_EXISTS; 143using ::fgetws _LIBCPP_USING_IF_EXISTS; 144using ::fputwc _LIBCPP_USING_IF_EXISTS; 145using ::fputws _LIBCPP_USING_IF_EXISTS; 146using ::fwide _LIBCPP_USING_IF_EXISTS; 147using ::getwc _LIBCPP_USING_IF_EXISTS; 148using ::putwc _LIBCPP_USING_IF_EXISTS; 149using ::ungetwc _LIBCPP_USING_IF_EXISTS; 150using ::wcstod _LIBCPP_USING_IF_EXISTS; 151using ::wcstof _LIBCPP_USING_IF_EXISTS; 152using ::wcstold _LIBCPP_USING_IF_EXISTS; 153using ::wcstol _LIBCPP_USING_IF_EXISTS; 154#if defined(__FreeBSD__) && defined(__LONG_LONG_SUPPORTED) 155using ::wcstoll _LIBCPP_USING_IF_EXISTS; 156#endif 157using ::wcstoul _LIBCPP_USING_IF_EXISTS; 158#if defined(__FreeBSD__) && defined(__LONG_LONG_SUPPORTED) 159using ::wcstoull _LIBCPP_USING_IF_EXISTS; 160#endif 161using ::wcscpy _LIBCPP_USING_IF_EXISTS; 162using ::wcsncpy _LIBCPP_USING_IF_EXISTS; 163using ::wcscat _LIBCPP_USING_IF_EXISTS; 164using ::wcsncat _LIBCPP_USING_IF_EXISTS; 165using ::wcscmp _LIBCPP_USING_IF_EXISTS; 166using ::wcscoll _LIBCPP_USING_IF_EXISTS; 167using ::wcsncmp _LIBCPP_USING_IF_EXISTS; 168using ::wcsxfrm _LIBCPP_USING_IF_EXISTS; 169using ::wcschr _LIBCPP_USING_IF_EXISTS; 170using ::wcspbrk _LIBCPP_USING_IF_EXISTS; 171using ::wcsrchr _LIBCPP_USING_IF_EXISTS; 172using ::wcsstr _LIBCPP_USING_IF_EXISTS; 173using ::wmemchr _LIBCPP_USING_IF_EXISTS; 174using ::wcscspn _LIBCPP_USING_IF_EXISTS; 175using ::wcslen _LIBCPP_USING_IF_EXISTS; 176using ::wcsspn _LIBCPP_USING_IF_EXISTS; 177using ::wcstok _LIBCPP_USING_IF_EXISTS; 178using ::wmemcmp _LIBCPP_USING_IF_EXISTS; 179using ::wmemcpy _LIBCPP_USING_IF_EXISTS; 180using ::wmemmove _LIBCPP_USING_IF_EXISTS; 181using ::wmemset _LIBCPP_USING_IF_EXISTS; 182using ::wcsftime _LIBCPP_USING_IF_EXISTS; 183using ::btowc _LIBCPP_USING_IF_EXISTS; 184using ::wctob _LIBCPP_USING_IF_EXISTS; 185using ::mbsinit _LIBCPP_USING_IF_EXISTS; 186using ::mbrlen _LIBCPP_USING_IF_EXISTS; 187using ::mbrtowc _LIBCPP_USING_IF_EXISTS; 188using ::wcrtomb _LIBCPP_USING_IF_EXISTS; 189using ::mbsrtowcs _LIBCPP_USING_IF_EXISTS; 190using ::wcsrtombs _LIBCPP_USING_IF_EXISTS; 191 192using ::getwchar _LIBCPP_USING_IF_EXISTS; 193using ::vwscanf _LIBCPP_USING_IF_EXISTS; 194using ::wscanf _LIBCPP_USING_IF_EXISTS; 195 196using ::putwchar _LIBCPP_USING_IF_EXISTS; 197using ::vwprintf _LIBCPP_USING_IF_EXISTS; 198using ::wprintf _LIBCPP_USING_IF_EXISTS; 199 200inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 size_t __constexpr_wcslen(const wchar_t* __str) { 201#if __has_builtin(__builtin_wcslen) 202 return __builtin_wcslen(__str); 203#else 204 if (!__libcpp_is_constant_evaluated()) 205 return std::wcslen(__str); 206 207 size_t __len = 0; 208 for (; *__str != L'\0'; ++__str) 209 ++__len; 210 return __len; 211#endif 212} 213 214inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int 215__constexpr_wmemcmp(const wchar_t* __lhs, const wchar_t* __rhs, size_t __count) { 216#if __has_builtin(__builtin_wmemcmp) 217 return __builtin_wmemcmp(__lhs, __rhs, __count); 218#else 219 if (!__libcpp_is_constant_evaluated()) 220 return std::wmemcmp(__lhs, __rhs, __count); 221 222 for (; __count; --__count, ++__lhs, ++__rhs) { 223 if (*__lhs < *__rhs) 224 return -1; 225 if (*__rhs < *__lhs) 226 return 1; 227 } 228 return 0; 229#endif 230} 231 232template <class _Tp, class _Up> 233_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* __constexpr_wmemchr(_Tp* __str, _Up __value, size_t __count) { 234 static_assert(sizeof(_Tp) == sizeof(wchar_t)&& _LIBCPP_ALIGNOF(_Tp) >= _LIBCPP_ALIGNOF(wchar_t) && 235 __libcpp_is_trivially_equality_comparable<_Tp, _Tp>::value, 236 "Calling wmemchr on non-trivially equality comparable types is unsafe."); 237 238#if __has_builtin(__builtin_wmemchr) 239 if (!__libcpp_is_constant_evaluated()) { 240 wchar_t __value_buffer = 0; 241 __builtin_memcpy(&__value_buffer, &__value, sizeof(wchar_t)); 242 return reinterpret_cast<_Tp*>( 243 __builtin_wmemchr(reinterpret_cast<__copy_cv_t<_Tp, wchar_t>*>(__str), __value_buffer, __count)); 244 } 245# if _LIBCPP_STD_VER >= 17 246 else if constexpr (is_same_v<remove_cv_t<_Tp>, wchar_t>) 247 return __builtin_wmemchr(__str, __value, __count); 248# endif 249#endif // __has_builtin(__builtin_wmemchr) 250 251 for (; __count; --__count) { 252 if (*__str == __value) 253 return __str; 254 ++__str; 255 } 256 return nullptr; 257} 258 259_LIBCPP_END_NAMESPACE_STD 260 261#endif // _LIBCPP_CWCHAR 262