| //===-- Implementation of mbrtowc -----------------------------------------===// | |
| // | |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |
| // See https://llvm.org/LICENSE.txt for license information. | |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // | |
| //===----------------------------------------------------------------------===// | |
| namespace LIBC_NAMESPACE_DECL { | |
| LLVM_LIBC_FUNCTION(size_t, mbrtowc, | |
| (wchar_t *__restrict pwc, const char *__restrict s, size_t n, | |
| mbstate_t *__restrict ps)) { | |
| static internal::mbstate internal_mbstate; | |
| auto ret = internal::mbrtowc(pwc, s, n, | |
| ps == nullptr | |
| ? &internal_mbstate | |
| : reinterpret_cast<internal::mbstate *>(ps)); | |
| if (!ret.has_value()) { | |
| // Encoding failure | |
| libc_errno = ret.error(); | |
| return -1; | |
| } | |
| return ret.value(); | |
| } | |
| } // namespace LIBC_NAMESPACE_DECL | |