FileOutput.cpp revision 191367e5d2b301f692c4561f252ee462635613a1
1/*
2 * Copyright 2014 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#include <img_utils/FileOutput.h>
18
19#include <utils/Log.h>
20
21namespace android {
22namespace img_utils {
23
24FileOutput::FileOutput(String8 path) : mFp(NULL), mPath(path), mOpen(false) {}
25
26FileOutput::~FileOutput() {
27    if (mOpen) {
28        ALOGW("%s: Destructor called with %s still open.", __FUNCTION__, mPath.string());
29        close();
30    }
31}
32
33status_t FileOutput::open() {
34    if (mOpen) {
35        ALOGW("%s: Open called when file %s already open.", __FUNCTION__, mPath.string());
36        return OK;
37    }
38    mFp = ::fopen(mPath, "wb");
39    if (!mFp) {
40        ALOGE("%s: Could not open file %s", __FUNCTION__, mPath.string());
41        return BAD_VALUE;
42    }
43    mOpen = true;
44    return OK;
45}
46
47status_t FileOutput::write(const uint8_t* buf, size_t offset, size_t count) {
48    if (!mOpen) {
49        ALOGE("%s: Could not write file %s, file not open.", __FUNCTION__, mPath.string());
50        return BAD_VALUE;
51    }
52
53    ::fwrite(buf + offset, sizeof(uint8_t), count, mFp);
54
55    int error = ::ferror(mFp);
56    if (error != 0) {
57        ALOGE("%s: Error %d occurred while writing file %s.", __FUNCTION__, error, mPath.string());
58        return BAD_VALUE;
59    }
60    return OK;
61}
62
63status_t FileOutput::close() {
64    if(!mOpen) {
65        ALOGW("%s: Close called when file %s already close.", __FUNCTION__, mPath.string());
66        return OK;
67    }
68
69    status_t ret = OK;
70    if(::fclose(mFp) != 0) {
71        ALOGE("%s: Failed to close file %s.", __FUNCTION__, mPath.string());
72        ret = BAD_VALUE;
73    }
74    mOpen = false;
75    return ret;
76}
77
78} /*namespace img_utils*/
79} /*namespace android*/
80