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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* ====================================================================
* 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.entity;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
import ch.boye.httpclientandroidlib.util.Args;
import ch.boye.httpclientandroidlib.util.Asserts;
/**
* A generic streamed, non-repeatable entity that obtains its content
* from an {@link InputStream}.
*
* @since 4.0
*/
@NotThreadSafe
public class BasicHttpEntity extends AbstractHttpEntity {
private InputStream content;
private long length;
/**
* Creates a new basic entity.
* The content is initially missing, the content length
* is set to a negative number.
*/
public BasicHttpEntity() {
super();
this.length = -1;
}
public long getContentLength() {
return this.length;
}
/**
* Obtains the content, once only.
*
* @return the content, if this is the first call to this method
* since {@link #setContent setContent} has been called
*
* @throws IllegalStateException
* if the content has not been provided
*/
public InputStream getContent() throws IllegalStateException {
Asserts.check(this.content != null, "Content has not been provided");
return this.content;
}
/**
* Tells that this entity is not repeatable.
*
* @return <code>false</code>
*/
public boolean isRepeatable() {
return false;
}
/**
* Specifies the length of the content.
*
* @param len the number of bytes in the content, or
* a negative number to indicate an unknown length
*/
public void setContentLength(final long len) {
this.length = len;
}
/**
* Specifies the content.
*
* @param instream the stream to return with the next call to
* {@link #getContent getContent}
*/
public void setContent(final InputStream instream) {
this.content = instream;
}
public void writeTo(final OutputStream outstream) throws IOException {
Args.notNull(outstream, "Output stream");
final InputStream instream = getContent();
try {
int l;
final byte[] tmp = new byte[OUTPUT_BUFFER_SIZE];
while ((l = instream.read(tmp)) != -1) {
outstream.write(tmp, 0, l);
}
} finally {
instream.close();
}
}
public boolean isStreaming() {
return this.content != null;
}
}
|
