1// Copyright 2017 The Abseil Authors.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// https://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#include "absl/strings/match.h"
16
17#include "absl/strings/internal/memutil.h"
18
19namespace absl {
20
21bool EqualsIgnoreCase(absl::string_view piece1, absl::string_view piece2) {
22 return (piece1.size() == piece2.size() &&
23 0 == absl::strings_internal::memcasecmp(piece1.data(), piece2.data(),
24 piece1.size()));
25 // memcasecmp uses absl::ascii_tolower().
26}
27
28bool StartsWithIgnoreCase(absl::string_view text, absl::string_view prefix) {
29 return (text.size() >= prefix.size()) &&
30 EqualsIgnoreCase(text.substr(0, prefix.size()), prefix);
31}
32
33bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix) {
34 return (text.size() >= suffix.size()) &&
35 EqualsIgnoreCase(text.substr(text.size() - suffix.size()), suffix);
36}
37
38} // namespace absl
39