1 /* 2 * Copyright (C) 2016 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 UTIL_H 18 #define UTIL_H 19 20 #include <map> 21 #include <string> 22 #include <vector> 23 24 using namespace std; 25 26 struct FileInfo 27 { 28 bool exists; 29 time_t mtime; 30 time_t ctime; 31 off_t size; 32 33 FileInfo(); 34 FileInfo(const FileInfo& that); 35 explicit FileInfo(const string& filename); 36 ~FileInfo(); 37 38 bool operator==(const FileInfo& that) const; 39 bool operator!=(const FileInfo& that) const; 40 }; 41 42 43 /** 44 * Record for a file that we are watching 45 */ 46 struct TrackedFile { 47 string filename; 48 FileInfo fileInfo; 49 50 TrackedFile(); 51 TrackedFile(const TrackedFile& that); 52 explicit TrackedFile(const string& filename); 53 ~TrackedFile(); 54 55 // Returns if the file has changed. If it doesn't currently exist, returns true. 56 bool HasChanged() const; 57 }; 58 59 /** 60 * Get FileInfo structures recursively for all the files and symlinks in a directory. 61 * Does not traverse symlinks, but it does record them. 62 */ 63 void get_directory_contents(const string& dir, map<string,FileInfo>* results); 64 65 bool directory_contents_differ(const map<string,FileInfo>& before, 66 const map<string,FileInfo>& after); 67 68 string escape_quotes(const char* str); 69 70 string escape_for_commandline(const char* str); 71 72 string trim(const string& trim); 73 74 bool starts_with(const string& str, const string& prefix); 75 76 bool ends_with(const string& str, const string& suffix); 77 78 void split_lines(vector<string>* result, const string& str); 79 80 string read_file(const string& filename); 81 82 #endif // UTIL_H 83 84
