ReadWriteUtils.h revision 2272ee27d9022d173b6eab45c409b3c3f57f30ec 
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
23namespace android {
24
25/**
26 * This is an utility class which performs IO operations.
27 *
28 */
29class ReadWriteUtils {
30public:
31    /**
32     * Constructor for ReadWriteUtils
33     */
34    ReadWriteUtils() {}
35
36    /**
37     * Destructor for ReadWriteUtils
38     */
39    virtual ~ReadWriteUtils();
40
41public:
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
72private:
73    FileMap* mFileMap;
74};
75
76};
77
78#endif /* __READ_WRITE_UTILS_H__ */
79
80