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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-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP_CWCHAR11#define _LIBCPP_CWCHAR12 13/*14 cwchar synopsis15 16Macros:17 18 NULL19 WCHAR_MAX20 WCHAR_MIN21 WEOF22 23namespace std24{25 26Types:27 28 mbstate_t29 size_t30 tm31 wint_t32 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); // C9939int 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); // C9941int vwprintf(const wchar_t* restrict format, va_list arg);42int vwscanf(const wchar_t* restrict format, va_list arg); // C9943int 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); // C9957long double wcstold(const wchar_t* restrict nptr, wchar_t** restrict endptr); // C9958long 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); // C9960unsigned 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); // C9962wchar_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} // std102 103*/104 105#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)106# include <__cxx03/cwchar>107#else108# include <__config>109# include <__cstddef/size_t.h>110# include <__memory/addressof.h>111# include <__type_traits/copy_cv.h>112# include <__type_traits/is_constant_evaluated.h>113# include <__type_traits/is_equality_comparable.h>114# include <__type_traits/is_same.h>115# include <__type_traits/remove_cv.h>116# include <cwctype>117 118# include <wchar.h>119 120# ifndef _LIBCPP_WCHAR_H121# error <cwchar> tried including <wchar.h> but didn't find libc++'s <wchar.h> header. \122 This usually means that your header search paths are not configured properly. \123 The header search paths should contain the C++ Standard Library headers before \124 any C Standard Library, and you are probably using compiler flags that make that \125 not be the case.126# endif127 128# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)129# pragma GCC system_header130# endif131 132_LIBCPP_BEGIN_NAMESPACE_STD133 134using ::mbstate_t _LIBCPP_USING_IF_EXISTS;135using ::tm _LIBCPP_USING_IF_EXISTS;136using ::wint_t _LIBCPP_USING_IF_EXISTS;137using ::FILE _LIBCPP_USING_IF_EXISTS;138using ::fwprintf _LIBCPP_USING_IF_EXISTS;139using ::fwscanf _LIBCPP_USING_IF_EXISTS;140using ::swprintf _LIBCPP_USING_IF_EXISTS;141using ::vfwprintf _LIBCPP_USING_IF_EXISTS;142using ::vswprintf _LIBCPP_USING_IF_EXISTS;143using ::swscanf _LIBCPP_USING_IF_EXISTS;144using ::vfwscanf _LIBCPP_USING_IF_EXISTS;145using ::vswscanf _LIBCPP_USING_IF_EXISTS;146using ::fgetwc _LIBCPP_USING_IF_EXISTS;147using ::fgetws _LIBCPP_USING_IF_EXISTS;148using ::fputwc _LIBCPP_USING_IF_EXISTS;149using ::fputws _LIBCPP_USING_IF_EXISTS;150using ::fwide _LIBCPP_USING_IF_EXISTS;151using ::getwc _LIBCPP_USING_IF_EXISTS;152using ::putwc _LIBCPP_USING_IF_EXISTS;153using ::ungetwc _LIBCPP_USING_IF_EXISTS;154using ::wcstod _LIBCPP_USING_IF_EXISTS;155using ::wcstof _LIBCPP_USING_IF_EXISTS;156using ::wcstold _LIBCPP_USING_IF_EXISTS;157using ::wcstol _LIBCPP_USING_IF_EXISTS;158using ::wcstoll _LIBCPP_USING_IF_EXISTS;159using ::wcstoul _LIBCPP_USING_IF_EXISTS;160using ::wcstoull _LIBCPP_USING_IF_EXISTS;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# else204 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# endif212}213 214inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int215__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# else219 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# endif230}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, std::addressof(__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 >= 17246 else if constexpr (is_same_v<remove_cv_t<_Tp>, wchar_t>)247 return __builtin_wmemchr(__str, __value, __count);248# endif249# 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_STD260 261# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20262# include <cstddef>263# endif264#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)265 266#endif // _LIBCPP_CWCHAR267