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//===-- Implementation of strstr ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/string/strstr.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
#include "src/__support/macros/null_check.h"
#include "src/string/memory_utils/inline_strstr.h"
namespace LIBC_NAMESPACE_DECL {
// TODO: This is a simple brute force implementation. This can be
// improved upon using well known string matching algorithms.
LLVM_LIBC_FUNCTION(char *, strstr, (const char *haystack, const char *needle)) {
auto comp = [](char l, char r) -> int { return l - r; };
LIBC_CRASH_ON_NULLPTR(haystack);
LIBC_CRASH_ON_NULLPTR(needle);
return inline_strstr(haystack, needle, comp);
}
} // namespace LIBC_NAMESPACE_DECL
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