1 // Copyright (C) 2022 Google LLC
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 // http://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 "icing/absl_ports/ascii_str_to_lower.h"
16
17 #include <string>
18
19 namespace icing {
20 namespace lib {
21 namespace absl_ports {
22
AsciiStrToLower(std::string * s)23 void AsciiStrToLower(std::string* s) {
24 for (auto& ch : *s) {
25 ch = std::tolower(static_cast<unsigned char>(ch));
26 }
27 }
28
29 } // namespace absl_ports
30 } // namespace lib
31 } // namespace icing
32