29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
//===-- Implementation of strlcat -----------------------------------------===//
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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/string/strlcat.h"
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#include "src/__support/macros/config.h"
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#include "src/string/string_utils.h"
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#include "src/__support/common.h"
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namespace LIBC_NAMESPACE_DECL {
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LLVM_LIBC_FUNCTION(size_t, strlcat,
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(char *__restrict dst, const char *__restrict src,
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size_t size)) {
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char *new_dst = reinterpret_cast<char *>(internal::find_first_character(
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reinterpret_cast<unsigned char *>(dst), 0, size));
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if (!new_dst)
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return size + internal::string_length(src);
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size_t first_len = new_dst - dst;
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return first_len + internal::strlcpy(new_dst, src, size - first_len);
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}
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} // namespace LIBC_NAMESPACE_DECL
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