1 /* 2 * Copyright (C) 2018 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 #include "perfetto/base/string_utils.h" 18 19 #include <algorithm> 20 21 #include "perfetto/base/logging.h" 22 23 namespace perfetto { 24 namespace base { 25 26 bool StartsWith(const std::string& str, const std::string& prefix) { 27 return str.compare(0, prefix.length(), prefix) == 0; 28 } 29 30 bool EndsWith(const std::string& str, const std::string& suffix) { 31 if (suffix.size() > str.size()) 32 return false; 33 return str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0; 34 } 35 36 bool Contains(const std::string& haystack, const std::string& needle) { 37 return haystack.find(needle) != std::string::npos; 38 } 39 40 std::string Join(const std::vector<std::string>& parts, 41 const std::string& delim) { 42 std::string acc; 43 for (size_t i = 0; i < parts.size(); ++i) { 44 acc += parts[i]; 45 if (i + 1 != parts.size()) { 46 acc += delim; 47 } 48 } 49 return acc; 50 } 51 52 std::vector<std::string> SplitString(const std::string& text, 53 const std::string& delimiter) { 54 PERFETTO_CHECK(!delimiter.empty()); 55 56 std::vector<std::string> output; 57 size_t start = 0; 58 size_t next; 59 for (;;) { 60 next = std::min(text.find(delimiter, start), text.size()); 61 output.emplace_back(&text[start], next - start); 62 start = next + delimiter.size(); 63 if (start >= text.size()) 64 break; 65 } 66 return output; 67 } 68 69 } // namespace base 70 } // namespace perfetto 71
