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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-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
31struct __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
45inline _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
51inline _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
56inline _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
61inline _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
67inline _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
72inline _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
78inline _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
84inline _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
89inline _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
95inline _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
101inline _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
108inline _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
118inline _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
128inline _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

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source code of libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h