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