36 lines · cpp
1//===-- Implementation of strftime_l function -----------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/time/strftime_l.h"10#include "hdr/types/locale_t.h"11#include "hdr/types/size_t.h"12#include "hdr/types/struct_tm.h"13#include "src/__support/common.h"14#include "src/__support/macros/config.h"15#include "src/stdio/printf_core/writer.h"16#include "src/time/strftime_core/strftime_main.h"17 18namespace LIBC_NAMESPACE_DECL {19 20// TODO: Add support for locales.21LLVM_LIBC_FUNCTION(size_t, strftime_l,22 (char *__restrict buffer, size_t buffsz,23 const char *__restrict format, const tm *timeptr,24 locale_t)) {25 printf_core::WriteBuffer<printf_core::Mode<26 printf_core::WriteMode::FILL_BUFF_AND_DROP_OVERFLOW>::value>27 wb(buffer, (buffsz > 0 ? buffsz - 1 : 0));28 printf_core::Writer writer(wb);29 auto ret = strftime_core::strftime_main(&writer, format, timeptr);30 if (buffsz > 0) // if the buffsz is 0 the buffer may be a null pointer.31 wb.buff[wb.buff_cur] = '\0';32 return (!ret.has_value() || ret.value() >= buffsz) ? 0 : ret.value();33}34 35} // namespace LIBC_NAMESPACE_DECL36