a0b65a7bcd
Summary: The new macro also inserts the C alias for the C++ implementations without needing an objcopy based post processing step. The CMake rules have been updated to reflect this. More CMake cleanup can be taken up in future rounds and appropriate TODOs have been added for them. Reviewers: mcgrathr, sivachandra Subscribers:
30 lines
943 B
C++
30 lines
943 B
C++
//===-- Implementation of strstr ------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/string/strstr.h"
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#include "src/__support/common.h"
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#include <stddef.h>
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namespace __llvm_libc {
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// TODO: This is a simple brute force implementation. This can be
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// improved upon using well known string matching algorithms.
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LLVM_LIBC_FUNCTION(char *, strstr, (const char *haystack, const char *needle)) {
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for (size_t i = 0; haystack[i]; ++i) {
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size_t j;
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for (j = 0; haystack[i + j] && haystack[i + j] == needle[j]; ++j)
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;
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if (!needle[j])
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return const_cast<char *>(haystack + i);
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}
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return nullptr;
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}
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} // namespace __llvm_libc
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