1 /* 2 * Copyright (C) 2010 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 __READ_WRITE_UTILS_H__ 18 #define __READ_WRITE_UTILS_H__ 19 20 #include <utils/FileMap.h> 21 #include <drm/drm_framework_common.h> 22 23 namespace android { 24 25 /** 26 * This is an utility class which performs IO operations. 27 * 28 */ 29 class ReadWriteUtils { 30 public: 31 /** 32 * Constructor for ReadWriteUtils 33 */ ReadWriteUtils()34 ReadWriteUtils() {} 35 36 /** 37 * Destructor for ReadWriteUtils 38 */ 39 virtual ~ReadWriteUtils(); 40 41 public: 42 /** 43 * Reads the data from the file path provided 44 * 45 * @param[in] filePath Path of the file 46 * @return Data read from the file 47 */ 48 static String8 readBytes(const String8& filePath); 49 /** 50 * Reads the data into the given buffer from the file path provided 51 * 52 * @param[in] filePath Path of the file 53 * @param[out] buffer Data read from the file 54 * @return Length of the data read from the file 55 */ 56 static int readBytes(const String8& filePath, char** buffer); 57 /** 58 * Writes the data into the file path provided 59 * 60 * @param[in] filePath Path of the file 61 * @param[in] dataBuffer Data to write 62 */ 63 static void writeToFile(const String8& filePath, const String8& data); 64 /** 65 * Appends the data into the file path provided 66 * 67 * @param[in] filePath Path of the file 68 * @param[in] dataBuffer Data to append 69 */ 70 static void appendToFile(const String8& filePath, const String8& data); 71 72 private: 73 FileMap* mFileMap; 74 }; 75 76 }; 77 78 #endif /* __READ_WRITE_UTILS_H__ */ 79 80