257 lines · plain
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___CXX03_CWCHAR11#define _LIBCPP___CXX03_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#include <__cxx03/__config>106#include <__cxx03/__type_traits/copy_cv.h>107#include <__cxx03/__type_traits/is_constant_evaluated.h>108#include <__cxx03/__type_traits/is_equality_comparable.h>109#include <__cxx03/__type_traits/is_same.h>110#include <__cxx03/__type_traits/remove_cv.h>111#include <__cxx03/cwctype>112 113#include <__cxx03/wchar.h>114 115#ifndef _LIBCPP___CXX03_WCHAR_H116# 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#endif122 123#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)124# pragma GCC system_header125#endif126 127_LIBCPP_BEGIN_NAMESPACE_STD128 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;154using ::wcstoll _LIBCPP_USING_IF_EXISTS;155using ::wcstoul _LIBCPP_USING_IF_EXISTS;156using ::wcstoull _LIBCPP_USING_IF_EXISTS;157using ::wcscpy _LIBCPP_USING_IF_EXISTS;158using ::wcsncpy _LIBCPP_USING_IF_EXISTS;159using ::wcscat _LIBCPP_USING_IF_EXISTS;160using ::wcsncat _LIBCPP_USING_IF_EXISTS;161using ::wcscmp _LIBCPP_USING_IF_EXISTS;162using ::wcscoll _LIBCPP_USING_IF_EXISTS;163using ::wcsncmp _LIBCPP_USING_IF_EXISTS;164using ::wcsxfrm _LIBCPP_USING_IF_EXISTS;165using ::wcschr _LIBCPP_USING_IF_EXISTS;166using ::wcspbrk _LIBCPP_USING_IF_EXISTS;167using ::wcsrchr _LIBCPP_USING_IF_EXISTS;168using ::wcsstr _LIBCPP_USING_IF_EXISTS;169using ::wmemchr _LIBCPP_USING_IF_EXISTS;170using ::wcscspn _LIBCPP_USING_IF_EXISTS;171using ::wcslen _LIBCPP_USING_IF_EXISTS;172using ::wcsspn _LIBCPP_USING_IF_EXISTS;173using ::wcstok _LIBCPP_USING_IF_EXISTS;174using ::wmemcmp _LIBCPP_USING_IF_EXISTS;175using ::wmemcpy _LIBCPP_USING_IF_EXISTS;176using ::wmemmove _LIBCPP_USING_IF_EXISTS;177using ::wmemset _LIBCPP_USING_IF_EXISTS;178using ::wcsftime _LIBCPP_USING_IF_EXISTS;179using ::btowc _LIBCPP_USING_IF_EXISTS;180using ::wctob _LIBCPP_USING_IF_EXISTS;181using ::mbsinit _LIBCPP_USING_IF_EXISTS;182using ::mbrlen _LIBCPP_USING_IF_EXISTS;183using ::mbrtowc _LIBCPP_USING_IF_EXISTS;184using ::wcrtomb _LIBCPP_USING_IF_EXISTS;185using ::mbsrtowcs _LIBCPP_USING_IF_EXISTS;186using ::wcsrtombs _LIBCPP_USING_IF_EXISTS;187 188using ::getwchar _LIBCPP_USING_IF_EXISTS;189using ::vwscanf _LIBCPP_USING_IF_EXISTS;190using ::wscanf _LIBCPP_USING_IF_EXISTS;191 192using ::putwchar _LIBCPP_USING_IF_EXISTS;193using ::vwprintf _LIBCPP_USING_IF_EXISTS;194using ::wprintf _LIBCPP_USING_IF_EXISTS;195 196inline _LIBCPP_HIDE_FROM_ABI size_t __constexpr_wcslen(const wchar_t* __str) {197#if __has_builtin(__builtin_wcslen)198 return __builtin_wcslen(__str);199#else200 if (!__libcpp_is_constant_evaluated())201 return std::wcslen(__str);202 203 size_t __len = 0;204 for (; *__str != L'\0'; ++__str)205 ++__len;206 return __len;207#endif208}209 210inline _LIBCPP_HIDE_FROM_ABI int __constexpr_wmemcmp(const wchar_t* __lhs, const wchar_t* __rhs, size_t __count) {211#if __has_builtin(__builtin_wmemcmp)212 return __builtin_wmemcmp(__lhs, __rhs, __count);213#else214 if (!__libcpp_is_constant_evaluated())215 return std::wmemcmp(__lhs, __rhs, __count);216 217 for (; __count; --__count, ++__lhs, ++__rhs) {218 if (*__lhs < *__rhs)219 return -1;220 if (*__rhs < *__lhs)221 return 1;222 }223 return 0;224#endif225}226 227template <class _Tp, class _Up>228_LIBCPP_HIDE_FROM_ABI _Tp* __constexpr_wmemchr(_Tp* __str, _Up __value, size_t __count) {229 static_assert(sizeof(_Tp) == sizeof(wchar_t)&& _LIBCPP_ALIGNOF(_Tp) >= _LIBCPP_ALIGNOF(wchar_t) &&230 __libcpp_is_trivially_equality_comparable<_Tp, _Tp>::value,231 "Calling wmemchr on non-trivially equality comparable types is unsafe.");232 233#if __has_builtin(__builtin_wmemchr)234 if (!__libcpp_is_constant_evaluated()) {235 wchar_t __value_buffer = 0;236 __builtin_memcpy(&__value_buffer, &__value, sizeof(wchar_t));237 return reinterpret_cast<_Tp*>(238 __builtin_wmemchr(reinterpret_cast<__copy_cv_t<_Tp, wchar_t>*>(__str), __value_buffer, __count));239 }240#endif // __has_builtin(__builtin_wmemchr)241 242 for (; __count; --__count) {243 if (*__str == __value)244 return __str;245 ++__str;246 }247 return nullptr;248}249 250_LIBCPP_END_NAMESPACE_STD251 252#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)253# include <__cxx03/cstddef>254#endif255 256#endif // _LIBCPP___CXX03_CWCHAR257