1b1183305SAlex Brachet //===-- Implementation of strlcat -----------------------------------------===// 2b1183305SAlex Brachet // 3b1183305SAlex Brachet // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4b1183305SAlex Brachet // See https://llvm.org/LICENSE.txt for license information. 5b1183305SAlex Brachet // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6b1183305SAlex Brachet // 7b1183305SAlex Brachet //===----------------------------------------------------------------------===// 8b1183305SAlex Brachet 9b1183305SAlex Brachet #include "src/string/strlcat.h" 10*5ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 11b1183305SAlex Brachet #include "src/string/string_utils.h" 12b1183305SAlex Brachet 13b1183305SAlex Brachet #include "src/__support/common.h" 14b1183305SAlex Brachet 15*5ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 16b1183305SAlex Brachet 17b1183305SAlex Brachet LLVM_LIBC_FUNCTION(size_t, strlcat, 18b1183305SAlex Brachet (char *__restrict dst, const char *__restrict src, 19b1183305SAlex Brachet size_t size)) { 20b1183305SAlex Brachet char *new_dst = reinterpret_cast<char *>(internal::find_first_character( 21b1183305SAlex Brachet reinterpret_cast<unsigned char *>(dst), 0, size)); 22b1183305SAlex Brachet if (!new_dst) 23b1183305SAlex Brachet return size + internal::string_length(src); 24b1183305SAlex Brachet size_t first_len = new_dst - dst; 25b1183305SAlex Brachet return first_len + internal::strlcpy(new_dst, src, size - first_len); 26b1183305SAlex Brachet } 27b1183305SAlex Brachet 28*5ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 29