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
25namespace android {
26namespace installd {
27
28static 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.
34static 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
50template <typename StringT>
51static 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