1 // Copyright (C) 2019 The Android Open Source Project 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 "utils/string_utils.h" 16 17 #include <algorithm> 18 #include <cctype> 19 #include <cstdlib> 20 #include <string> 21 #include <utility> 22 23 24 namespace header_checker { 25 namespace utils { 26 27 28 std::string_view Trim(std::string_view s) { 29 std::string::size_type start = s.find_first_not_of(" \t\r\n"); 30 if (start == std::string::npos) { 31 return ""; 32 } 33 std::string::size_type end = s.find_last_not_of(" \t\r\n"); 34 if (end == std::string::npos) { 35 return s.substr(start); 36 } 37 return s.substr(start, end - start + 1); 38 } 39 40 41 bool StartsWith(std::string_view s, std::string_view prefix) { 42 return s.size() >= prefix.size() && s.compare(0, prefix.size(), prefix) == 0; 43 } 44 45 46 bool EndsWith(std::string_view s, std::string_view suffix) { 47 return (s.size() >= suffix.size() && 48 s.compare(s.size() - suffix.size(), suffix.size(), suffix) == 0); 49 } 50 51 52 std::vector<std::string_view> Split(std::string_view s, 53 std::string_view delim_chars) { 54 std::vector<std::string_view> res; 55 std::string::size_type pos = 0; 56 while (true) { 57 pos = s.find_first_not_of(delim_chars, pos); 58 if (pos == std::string::npos) { 59 break; 60 } 61 62 std::string::size_type end = s.find_first_of(delim_chars, pos + 1); 63 if (end == std::string::npos) { 64 res.push_back(s.substr(pos)); 65 break; 66 } 67 68 res.push_back(s.substr(pos, end - pos)); 69 pos = end + 1; 70 } 71 return res; 72 } 73 74 75 std::optional<int> ParseInt(const std::string &s) { 76 const char *start = s.c_str(); 77 if (*start == '\0') { 78 return {}; 79 } 80 81 char *endptr = nullptr; 82 long int res = ::strtol(start, &endptr, 10); 83 if (*endptr != '\0') { 84 return {}; 85 } 86 87 return static_cast<int>(res); 88 } 89 90 91 bool ParseBool(const std::string &s) { 92 std::string value(s); 93 std::transform(value.begin(), value.end(), value.begin(), std::tolower); 94 return (value == "true" || value == "on" || value == "1"); 95 } 96 97 98 bool IsGlobPattern(std::string_view s) { 99 return s.find_first_of("*?[") != std::string::npos; 100 } 101 102 103 } // namespace utils 104 } // namespace header_checker 105
