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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 | |
| 10 | #ifndef _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_IBM_H |
| 11 | #define _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_IBM_H |
| 12 | |
| 13 | #if defined(__MVS__) |
| 14 | # include <__support/ibm/locale_mgmt_zos.h> |
| 15 | #endif // defined(__MVS__) |
| 16 | |
| 17 | #include <locale.h> |
| 18 | #include <stdarg.h> |
| 19 | #include <stdio.h> |
| 20 | |
| 21 | #include "cstdlib" |
| 22 | |
| 23 | #if defined(__MVS__) |
| 24 | # include <wctype.h> |
| 25 | // POSIX routines |
| 26 | # include <__support/xlocale/__posix_l_fallback.h> |
| 27 | #endif // defined(__MVS__) |
| 28 | |
| 29 | namespace { |
| 30 | |
| 31 | struct __setAndRestore { |
| 32 | explicit __setAndRestore(locale_t locale) { |
| 33 | if (locale == (locale_t)0) { |
| 34 | __cloc = newlocale(LC_ALL_MASK, "C", /* base */ (locale_t)0); |
| 35 | __stored = uselocale(__cloc); |
| 36 | } else { |
| 37 | __stored = uselocale(locale); |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | ~__setAndRestore() { |
| 42 | uselocale(__stored); |
| 43 | if (__cloc) |
| 44 | freelocale(__cloc); |
| 45 | } |
| 46 | |
| 47 | private: |
| 48 | locale_t __stored = (locale_t)0; |
| 49 | locale_t __cloc = (locale_t)0; |
| 50 | }; |
| 51 | |
| 52 | } // namespace |
| 53 | |
| 54 | // The following are not POSIX routines. These are quick-and-dirty hacks |
| 55 | // to make things pretend to work |
| 56 | inline _LIBCPP_HIDE_FROM_ABI long long strtoll_l(const char* __nptr, char** __endptr, int __base, locale_t locale) { |
| 57 | __setAndRestore __newloc(locale); |
| 58 | return ::strtoll(__nptr, __endptr, __base); |
| 59 | } |
| 60 | |
| 61 | inline _LIBCPP_HIDE_FROM_ABI double strtod_l(const char* __nptr, char** __endptr, locale_t locale) { |
| 62 | __setAndRestore __newloc(locale); |
| 63 | return ::strtod(__nptr, __endptr); |
| 64 | } |
| 65 | |
| 66 | inline _LIBCPP_HIDE_FROM_ABI float strtof_l(const char* __nptr, char** __endptr, locale_t locale) { |
| 67 | __setAndRestore __newloc(locale); |
| 68 | return ::strtof(__nptr, __endptr); |
| 69 | } |
| 70 | |
| 71 | inline _LIBCPP_HIDE_FROM_ABI long double strtold_l(const char* __nptr, char** __endptr, locale_t locale) { |
| 72 | __setAndRestore __newloc(locale); |
| 73 | return ::strtold(__nptr, __endptr); |
| 74 | } |
| 75 | |
| 76 | inline _LIBCPP_HIDE_FROM_ABI unsigned long long |
| 77 | strtoull_l(const char* __nptr, char** __endptr, int __base, locale_t locale) { |
| 78 | __setAndRestore __newloc(locale); |
| 79 | return ::strtoull(__nptr, __endptr, __base); |
| 80 | } |
| 81 | |
| 82 | inline _LIBCPP_HIDE_FROM_ABI |
| 83 | _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 2, 0) int vasprintf(char** strp, const char* fmt, va_list ap) { |
| 84 | const size_t buff_size = 256; |
| 85 | if ((*strp = (char*)malloc(buff_size)) == nullptr) { |
| 86 | return -1; |
| 87 | } |
| 88 | |
| 89 | va_list ap_copy; |
| 90 | // va_copy may not be provided by the C library in C++03 mode. |
| 91 | #if defined(_LIBCPP_CXX03_LANG) && __has_builtin(__builtin_va_copy) |
| 92 | __builtin_va_copy(ap_copy, ap); |
| 93 | #else |
| 94 | va_copy(ap_copy, ap); |
| 95 | #endif |
| 96 | int str_size = vsnprintf(*strp, buff_size, fmt, ap_copy); |
| 97 | va_end(ap_copy); |
| 98 | |
| 99 | if ((size_t)str_size >= buff_size) { |
| 100 | if ((*strp = (char*)realloc(*strp, str_size + 1)) == nullptr) { |
| 101 | return -1; |
| 102 | } |
| 103 | str_size = vsnprintf(*strp, str_size + 1, fmt, ap); |
| 104 | } |
| 105 | return str_size; |
| 106 | } |
| 107 | |
| 108 | #endif // _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_IBM_H |
| 109 |
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