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author | heretic <heretic@yandex-team.ru> | 2022-02-10 16:45:46 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:46 +0300 |
commit | 81eddc8c0b55990194e112b02d127b87d54164a9 (patch) | |
tree | 9142afc54d335ea52910662635b898e79e192e49 /contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc | |
parent | 397cbe258b9e064f49c4ca575279f02f39fef76e (diff) | |
download | ydb-81eddc8c0b55990194e112b02d127b87d54164a9.tar.gz |
Restoring authorship annotation for <heretic@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc')
-rw-r--r-- | contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc | 176 |
1 files changed, 88 insertions, 88 deletions
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc index 5d8deec11a..fe50d84a03 100644 --- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc +++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc @@ -1,88 +1,88 @@ -// Copyright 2020 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "y_absl/base/internal/strerror.h" - -#include <array> -#include <cerrno> -#include <cstddef> -#include <cstdio> -#include <cstring> -#include <util/generic/string.h> -#include <type_traits> - -#include "y_absl/base/internal/errno_saver.h" - -namespace y_absl { -ABSL_NAMESPACE_BEGIN -namespace base_internal { -namespace { - -const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) { -#if defined(_WIN32) - int rc = strerror_s(buf, buflen, errnum); - buf[buflen - 1] = '\0'; // guarantee NUL termination - if (rc == 0 && strncmp(buf, "Unknown error", buflen) == 0) *buf = '\0'; - return buf; -#else - // The type of `ret` is platform-specific; both of these branches must compile - // either way but only one will execute on any given platform: - auto ret = strerror_r(errnum, buf, buflen); - if (std::is_same<decltype(ret), int>::value) { - // XSI `strerror_r`; `ret` is `int`: - if (ret) *buf = '\0'; - return buf; - } else { - // GNU `strerror_r`; `ret` is `char *`: - return reinterpret_cast<const char*>(ret); - } -#endif -} - -TString StrErrorInternal(int errnum) { - char buf[100]; - const char* str = StrErrorAdaptor(errnum, buf, sizeof buf); - if (*str == '\0') { - snprintf(buf, sizeof buf, "Unknown error %d", errnum); - str = buf; - } - return str; -} - -// kSysNerr is the number of errors from a recent glibc. `StrError()` falls back -// to `StrErrorAdaptor()` if the value is larger than this. -constexpr int kSysNerr = 135; - -std::array<TString, kSysNerr>* NewStrErrorTable() { - auto* table = new std::array<TString, kSysNerr>; - for (int i = 0; i < static_cast<int>(table->size()); ++i) { - (*table)[i] = StrErrorInternal(i); - } - return table; -} - -} // namespace - -TString StrError(int errnum) { - y_absl::base_internal::ErrnoSaver errno_saver; - static const auto* table = NewStrErrorTable(); - if (errnum >= 0 && errnum < static_cast<int>(table->size())) { - return (*table)[errnum]; - } - return StrErrorInternal(errnum); -} - -} // namespace base_internal -ABSL_NAMESPACE_END -} // namespace y_absl +// Copyright 2020 The Abseil Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "y_absl/base/internal/strerror.h" + +#include <array> +#include <cerrno> +#include <cstddef> +#include <cstdio> +#include <cstring> +#include <util/generic/string.h> +#include <type_traits> + +#include "y_absl/base/internal/errno_saver.h" + +namespace y_absl { +ABSL_NAMESPACE_BEGIN +namespace base_internal { +namespace { + +const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) { +#if defined(_WIN32) + int rc = strerror_s(buf, buflen, errnum); + buf[buflen - 1] = '\0'; // guarantee NUL termination + if (rc == 0 && strncmp(buf, "Unknown error", buflen) == 0) *buf = '\0'; + return buf; +#else + // The type of `ret` is platform-specific; both of these branches must compile + // either way but only one will execute on any given platform: + auto ret = strerror_r(errnum, buf, buflen); + if (std::is_same<decltype(ret), int>::value) { + // XSI `strerror_r`; `ret` is `int`: + if (ret) *buf = '\0'; + return buf; + } else { + // GNU `strerror_r`; `ret` is `char *`: + return reinterpret_cast<const char*>(ret); + } +#endif +} + +TString StrErrorInternal(int errnum) { + char buf[100]; + const char* str = StrErrorAdaptor(errnum, buf, sizeof buf); + if (*str == '\0') { + snprintf(buf, sizeof buf, "Unknown error %d", errnum); + str = buf; + } + return str; +} + +// kSysNerr is the number of errors from a recent glibc. `StrError()` falls back +// to `StrErrorAdaptor()` if the value is larger than this. +constexpr int kSysNerr = 135; + +std::array<TString, kSysNerr>* NewStrErrorTable() { + auto* table = new std::array<TString, kSysNerr>; + for (int i = 0; i < static_cast<int>(table->size()); ++i) { + (*table)[i] = StrErrorInternal(i); + } + return table; +} + +} // namespace + +TString StrError(int errnum) { + y_absl::base_internal::ErrnoSaver errno_saver; + static const auto* table = NewStrErrorTable(); + if (errnum >= 0 && errnum < static_cast<int>(table->size())) { + return (*table)[errnum]; + } + return StrErrorInternal(errnum); +} + +} // namespace base_internal +ABSL_NAMESPACE_END +} // namespace y_absl |