1d080635bScgyurgyik //===-- Implementation of strstr ------------------------------------------===// 2d080635bScgyurgyik // 3d080635bScgyurgyik // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4d080635bScgyurgyik // See https://llvm.org/LICENSE.txt for license information. 5d080635bScgyurgyik // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6d080635bScgyurgyik // 7d080635bScgyurgyik //===----------------------------------------------------------------------===// 8d080635bScgyurgyik 9d080635bScgyurgyik #include "src/string/strstr.h" 10d080635bScgyurgyik 11d080635bScgyurgyik #include "src/__support/common.h" 12*5ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 131f578347SGuillaume Chatelet #include "src/string/memory_utils/inline_strstr.h" 14d080635bScgyurgyik 15*5ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 16d080635bScgyurgyik 17d080635bScgyurgyik // TODO: This is a simple brute force implementation. This can be 18d080635bScgyurgyik // improved upon using well known string matching algorithms. 19a0b65a7bSMichael Jones LLVM_LIBC_FUNCTION(char *, strstr, (const char *haystack, const char *needle)) { 20eebb2e31SAlex Brachet auto comp = [](char l, char r) -> int { return l - r; }; 211f578347SGuillaume Chatelet return inline_strstr(haystack, needle, comp); 22d080635bScgyurgyik } 23d080635bScgyurgyik 24*5ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 25