41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
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// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/strings/internal/memutil.h"
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#include <cstdlib>
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#include "absl/strings/ascii.h"
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace strings_internal {
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int memcasecmp(const char* s1, const char* s2, size_t len) {
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const unsigned char* us1 = reinterpret_cast<const unsigned char*>(s1);
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const unsigned char* us2 = reinterpret_cast<const unsigned char*>(s2);
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for (size_t i = 0; i < len; i++) {
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const int diff =
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int{static_cast<unsigned char>(absl::ascii_tolower(us1[i]))} -
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int{static_cast<unsigned char>(absl::ascii_tolower(us2[i]))};
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if (diff != 0) return diff;
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}
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return 0;
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}
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} // namespace strings_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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