1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef ART_OTAPREOPT_STRING_HELPERS_H_
18 #define ART_OTAPREOPT_STRING_HELPERS_H_
19
20 #include <sstream>
21 #include <string>
22
23 #include <android-base/macros.h>
24
25 namespace android {
26 namespace installd {
27
StringStartsWith(const std::string & target,const char * prefix)28 static inline bool StringStartsWith(const std::string& target,
29 const char* prefix) {
30 return target.compare(0, strlen(prefix), prefix) == 0;
31 }
32
33 // Split the input according to the separator character. Doesn't honor quotation.
Split(const std::string & in,const char separator)34 static inline std::vector<std::string> Split(const std::string& in, const char separator) {
35 if (in.empty()) {
36 return std::vector<std::string>();
37 }
38
39 std::vector<std::string> ret;
40 std::stringstream strstr(in);
41 std::string token;
42
43 while (std::getline(strstr, token, separator)) {
44 ret.push_back(token);
45 }
46
47 return ret;
48 }
49
50 template <typename StringT>
Join(const std::vector<StringT> & strings,char separator)51 static inline std::string Join(const std::vector<StringT>& strings, char separator) {
52 if (strings.empty()) {
53 return "";
54 }
55
56 std::string result(strings[0]);
57 for (size_t i = 1; i < strings.size(); ++i) {
58 result += separator;
59 result += strings[i];
60 }
61 return result;
62 }
63
64 } // namespace installd
65 } // namespace android
66
67 #endif // ART_OTAPREOPT_STRING_HELPERS_H_
68