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 // The BSDs have lots of *_l functions. This file provides reimplementations 10 // of those functions for non-BSD platforms. 11 //===----------------------------------------------------------------------===// 12 13 #ifndef _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H 14 #define _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H 15 16 #include <locale.h> 17 #include <stdarg.h> 18 #include <stdio.h> 19 #include <stdlib.h> 20 21 #if _LIBCPP_HAS_WIDE_CHARACTERS 22 # include <cwchar> 23 #endif 24 25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 26 # pragma GCC system_header 27 #endif 28 29 _LIBCPP_BEGIN_NAMESPACE_STD 30 31 struct __locale_guard { 32 _LIBCPP_HIDE_FROM_ABI __locale_guard(locale_t& __loc) : __old_loc_(::uselocale(__loc)) {} 33 34 _LIBCPP_HIDE_FROM_ABI ~__locale_guard() { 35 if (__old_loc_) 36 ::uselocale(__old_loc_); 37 } 38 39 locale_t __old_loc_; 40 41 __locale_guard(__locale_guard const&) = delete; 42 __locale_guard& operator=(__locale_guard const&) = delete; 43 }; 44 45 inline _LIBCPP_HIDE_FROM_ABI decltype(MB_CUR_MAX) __libcpp_mb_cur_max_l(locale_t __l) { 46 __locale_guard __current(__l); 47 return MB_CUR_MAX; 48 } 49 50 #if _LIBCPP_HAS_WIDE_CHARACTERS 51 inline _LIBCPP_HIDE_FROM_ABI wint_t __libcpp_btowc_l(int __c, locale_t __l) { 52 __locale_guard __current(__l); 53 return btowc(__c); 54 } 55 56 inline _LIBCPP_HIDE_FROM_ABI int __libcpp_wctob_l(wint_t __c, locale_t __l) { 57 __locale_guard __current(__l); 58 return wctob(__c); 59 } 60 61 inline _LIBCPP_HIDE_FROM_ABI size_t 62 __libcpp_wcsnrtombs_l(char* __dest, const wchar_t** __src, size_t __nwc, size_t __len, mbstate_t* __ps, locale_t __l) { 63 __locale_guard __current(__l); 64 return wcsnrtombs(__dest, __src, __nwc, __len, __ps); 65 } 66 67 inline _LIBCPP_HIDE_FROM_ABI size_t __libcpp_wcrtomb_l(char* __s, wchar_t __wc, mbstate_t* __ps, locale_t __l) { 68 __locale_guard __current(__l); 69 return wcrtomb(__s, __wc, __ps); 70 } 71 72 inline _LIBCPP_HIDE_FROM_ABI size_t 73 __libcpp_mbsnrtowcs_l(wchar_t* __dest, const char** __src, size_t __nms, size_t __len, mbstate_t* __ps, locale_t __l) { 74 __locale_guard __current(__l); 75 return mbsnrtowcs(__dest, __src, __nms, __len, __ps); 76 } 77 78 inline _LIBCPP_HIDE_FROM_ABI size_t 79 __libcpp_mbrtowc_l(wchar_t* __pwc, const char* __s, size_t __n, mbstate_t* __ps, locale_t __l) { 80 __locale_guard __current(__l); 81 return mbrtowc(__pwc, __s, __n, __ps); 82 } 83 84 inline _LIBCPP_HIDE_FROM_ABI int __libcpp_mbtowc_l(wchar_t* __pwc, const char* __pmb, size_t __max, locale_t __l) { 85 __locale_guard __current(__l); 86 return mbtowc(__pwc, __pmb, __max); 87 } 88 89 inline _LIBCPP_HIDE_FROM_ABI size_t __libcpp_mbrlen_l(const char* __s, size_t __n, mbstate_t* __ps, locale_t __l) { 90 __locale_guard __current(__l); 91 return mbrlen(__s, __n, __ps); 92 } 93 #endif // _LIBCPP_HAS_WIDE_CHARACTERS 94 95 inline _LIBCPP_HIDE_FROM_ABI lconv* __libcpp_localeconv_l(locale_t& __l) { 96 __locale_guard __current(__l); 97 return localeconv(); 98 } 99 100 #if _LIBCPP_HAS_WIDE_CHARACTERS 101 inline _LIBCPP_HIDE_FROM_ABI size_t 102 __libcpp_mbsrtowcs_l(wchar_t* __dest, const char** __src, size_t __len, mbstate_t* __ps, locale_t __l) { 103 __locale_guard __current(__l); 104 return mbsrtowcs(__dest, __src, __len, __ps); 105 } 106 #endif 107 108 inline _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 4, 5) int __libcpp_snprintf_l( 109 char* __s, size_t __n, locale_t __l, const char* __format, ...) { 110 va_list __va; 111 va_start(__va, __format); 112 __locale_guard __current(__l); 113 int __res = vsnprintf(__s, __n, __format, __va); 114 va_end(__va); 115 return __res; 116 } 117 118 inline _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 3, 4) int __libcpp_asprintf_l( 119 char** __s, locale_t __l, const char* __format, ...) { 120 va_list __va; 121 va_start(__va, __format); 122 __locale_guard __current(__l); 123 int __res = vasprintf(__s, __format, __va); 124 va_end(__va); 125 return __res; 126 } 127 128 inline _LIBCPP_ATTRIBUTE_FORMAT(__scanf__, 3, 4) int __libcpp_sscanf_l( 129 const char* __s, locale_t __l, const char* __format, ...) { 130 va_list __va; 131 va_start(__va, __format); 132 __locale_guard __current(__l); 133 int __res = vsscanf(__s, __format, __va); 134 va_end(__va); 135 return __res; 136 } 137 138 _LIBCPP_END_NAMESPACE_STD 139 140 #endif // _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H 141