1 #pragma once 2 3 #include <stdio.h> 4 5 #include <filesystem> 6 namespace phosphor 7 { 8 namespace user 9 { 10 11 /** @class File 12 * @brief Responsible for handling file pointer 13 * Needed by putspent(3) 14 */ 15 class File 16 { 17 private: 18 /** @brief handler for operating on file */ 19 FILE* fp = NULL; 20 21 /** @brief File name. Needed in the case where the temp 22 * needs to be removed 23 */ 24 const std::string& name; 25 26 /** @brief Should the file be removed at exit */ 27 bool removeOnExit = false; 28 29 public: 30 File() = delete; 31 File(const File&) = delete; 32 File& operator=(const File&) = delete; 33 File(File&&) = delete; 34 File& operator=(File&&) = delete; 35 36 /** @brief Opens file and uses it to do file operation 37 * 38 * @param[in] name - File name 39 * @param[in] mode - File open mode 40 * @param[in] removeOnExit - File to be removed at exit or no 41 */ 42 File(const std::string& name, const std::string& mode, 43 bool removeOnExit = false) : 44 name(name), 45 removeOnExit(removeOnExit) 46 { 47 fp = fopen(name.c_str(), mode.c_str()); 48 } 49 50 /** @brief Opens file using provided file descriptor 51 * 52 * @param[in] fd - File descriptor 53 * @param[in] name - File name 54 * @param[in] mode - File open mode 55 * @param[in] removeOnExit - File to be removed at exit or no 56 */ 57 File(int fd, const std::string& name, const std::string& mode, 58 bool removeOnExit = false) : 59 name(name), 60 removeOnExit(removeOnExit) 61 { 62 fp = fdopen(fd, mode.c_str()); 63 } 64 65 ~File() 66 { 67 if (fp) 68 { 69 fclose(fp); 70 } 71 72 // Needed for exception safety 73 if (removeOnExit && std::filesystem::exists(name)) 74 { 75 std::filesystem::remove(name); 76 } 77 } 78 79 auto operator()() 80 { 81 return fp; 82 } 83 }; 84 85 } // namespace user 86 } // namespace phosphor 87