| 1 | //===-- Implementation of strlcat -----------------------------------------===// |
|---|---|
| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/string/strlcat.h" |
| 10 | #include "src/string/string_utils.h" |
| 11 | |
| 12 | #include "src/__support/common.h" |
| 13 | |
| 14 | namespace LIBC_NAMESPACE { |
| 15 | |
| 16 | LLVM_LIBC_FUNCTION(size_t, strlcat, |
| 17 | (char *__restrict dst, const char *__restrict src, |
| 18 | size_t size)) { |
| 19 | char *new_dst = reinterpret_cast<char *>(internal::find_first_character( |
| 20 | src: reinterpret_cast<unsigned char *>(dst), ch: 0, max_strlen: size)); |
| 21 | if (!new_dst) |
| 22 | return size + internal::string_length(src); |
| 23 | size_t first_len = new_dst - dst; |
| 24 | return first_len + internal::strlcpy(dst: new_dst, src, size: size - first_len); |
| 25 | } |
| 26 | |
| 27 | } // namespace LIBC_NAMESPACE |
| 28 |