1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.client.cache;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import ch.boye.httpclientandroidlib.HttpEntity;
import ch.boye.httpclientandroidlib.annotation.Immutable;
@Immutable
class IOUtils {
static void consume(final HttpEntity entity) throws IOException {
if (entity == null) {
return;
}
if (entity.isStreaming()) {
final InputStream instream = entity.getContent();
if (instream != null) {
instream.close();
}
}
}
static void copy(final InputStream in, final OutputStream out) throws IOException {
final byte[] buf = new byte[2048];
int len;
while ((len = in.read(buf)) != -1) {
out.write(buf, 0, len);
}
}
static void closeSilently(final Closeable closable) {
try {
closable.close();
} catch (final IOException ignore) {
}
}
static void copyAndClose(final InputStream in, final OutputStream out) throws IOException {
try {
copy(in, out);
in.close();
out.close();
} catch (final IOException ex) {
closeSilently(in);
closeSilently(out);
// Propagate the original exception
throw ex;
}
}
static void copyFile(final File in, final File out) throws IOException {
final RandomAccessFile f1 = new RandomAccessFile(in, "r");
final RandomAccessFile f2 = new RandomAccessFile(out, "rw");
try {
final FileChannel c1 = f1.getChannel();
final FileChannel c2 = f2.getChannel();
try {
c1.transferTo(0, f1.length(), c2);
c1.close();
c2.close();
} catch (final IOException ex) {
closeSilently(c1);
closeSilently(c2);
// Propagate the original exception
throw ex;
}
f1.close();
f2.close();
} catch (final IOException ex) {
closeSilently(f1);
closeSilently(f2);
// Propagate the original exception
throw ex;
}
}
}
|