Wed, 31 Dec 2014 07:22:50 +0100
Correct previous dual key logic pending first delivery installment.
1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
28 package ch.boye.httpclientandroidlib.entity;
30 import java.io.IOException;
31 import java.io.InputStream;
32 import java.io.OutputStream;
34 /**
35 * A streamed, non-repeatable entity that obtains its content from
36 * an {@link InputStream}.
37 *
38 * @since 4.0
39 */
40 public class InputStreamEntity extends AbstractHttpEntity {
42 private final static int BUFFER_SIZE = 2048;
44 private final InputStream content;
45 private final long length;
47 public InputStreamEntity(final InputStream instream, long length) {
48 super();
49 if (instream == null) {
50 throw new IllegalArgumentException("Source input stream may not be null");
51 }
52 this.content = instream;
53 this.length = length;
54 }
56 public boolean isRepeatable() {
57 return false;
58 }
60 public long getContentLength() {
61 return this.length;
62 }
64 public InputStream getContent() throws IOException {
65 return this.content;
66 }
68 public void writeTo(final OutputStream outstream) throws IOException {
69 if (outstream == null) {
70 throw new IllegalArgumentException("Output stream may not be null");
71 }
72 InputStream instream = this.content;
73 try {
74 byte[] buffer = new byte[BUFFER_SIZE];
75 int l;
76 if (this.length < 0) {
77 // consume until EOF
78 while ((l = instream.read(buffer)) != -1) {
79 outstream.write(buffer, 0, l);
80 }
81 } else {
82 // consume no more than length
83 long remaining = this.length;
84 while (remaining > 0) {
85 l = instream.read(buffer, 0, (int)Math.min(BUFFER_SIZE, remaining));
86 if (l == -1) {
87 break;
88 }
89 outstream.write(buffer, 0, l);
90 remaining -= l;
91 }
92 }
93 } finally {
94 instream.close();
95 }
96 }
98 public boolean isStreaming() {
99 return true;
100 }
102 /**
103 * @deprecated Either use {@link #getContent()} and call {@link java.io.InputStream#close()} on that;
104 * otherwise call {@link #writeTo(OutputStream)} which is required to free the resources.
105 */
106 public void consumeContent() throws IOException {
107 // If the input stream is from a connection, closing it will read to
108 // the end of the content. Otherwise, we don't care what it does.
109 this.content.close();
110 }
112 }