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