| 1 | //===-- Implementation of strlcat -----------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/string/strlcat.h" |
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| 10 | #include "src/__support/macros/config.h" |
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| 11 | #include "src/string/string_utils.h" |
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| 12 | |
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| 13 | #include "src/__support/common.h" |
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| 14 | |
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| 15 | namespace LIBC_NAMESPACE_DECL { |
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| 16 | |
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| 17 | LLVM_LIBC_FUNCTION(size_t, strlcat, |
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| 18 | (char *__restrict dst, const char *__restrict src, |
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| 19 | size_t size)) { |
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| 20 | char *new_dst = reinterpret_cast<char *>(internal::find_first_character( |
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| 21 | reinterpret_cast<unsigned char *>(dst), 0, size)); |
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| 22 | if (!new_dst) |
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| 23 | return size + internal::string_length(src); |
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| 24 | size_t first_len = new_dst - dst; |
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| 25 | return first_len + internal::strlcpy(new_dst, src, size - first_len); |
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| 26 | } |
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| 27 | |
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| 28 | } // namespace LIBC_NAMESPACE_DECL |
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| 29 | |
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