4f2686e5a1
Implemented mblen and mbrlen as well as tests --------- Co-authored-by: Sriya Pratipati <sriyap@google.com>
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
//===-- Implementation of mbrlen ------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/wchar/mbrlen.h"
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#include "hdr/types/mbstate_t.h"
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#include "hdr/types/size_t.h"
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#include "src/__support/common.h"
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#include "src/__support/libc_errno.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/wchar/mbrtowc.h"
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#include "src/__support/wchar/mbstate.h"
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namespace LIBC_NAMESPACE_DECL {
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LLVM_LIBC_FUNCTION(size_t, mbrlen,
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(const char *__restrict s, size_t n,
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mbstate_t *__restrict ps)) {
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static internal::mbstate internal_mbstate;
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auto ret = internal::mbrtowc(nullptr, s, n,
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ps == nullptr
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? &internal_mbstate
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: reinterpret_cast<internal::mbstate *>(ps));
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if (!ret.has_value()) {
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// Encoding failure
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libc_errno = ret.error();
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return -1;
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}
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return ret.value();
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}
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} // namespace LIBC_NAMESPACE_DECL
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