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 */
27
28 package org.apache.http.client.fluent;
29
30 import java.io.IOException;
31 import java.io.InputStream;
32 import java.io.OutputStream;
33
34 import org.apache.http.entity.AbstractHttpEntity;
35 import org.apache.http.entity.ContentType;
36 import org.apache.http.util.Args;
37
38 class InternalInputStreamEntity extends AbstractHttpEntity {
39
40 private final InputStream content;
41 private final long length;
42
43 public InternalInputStreamEntity(final InputStream inputStream, final long length, final ContentType contentType) {
44 super();
45 this.content = Args.notNull(inputStream, "Source input stream");
46 this.length = length;
47 if (contentType != null) {
48 setContentType(contentType.toString());
49 }
50 }
51
52 @Override
53 public boolean isRepeatable() {
54 return false;
55 }
56
57 @Override
58 public long getContentLength() {
59 return this.length;
60 }
61
62 @Override
63 public InputStream getContent() throws IOException {
64 return this.content;
65 }
66
67 @Override
68 public void writeTo(final OutputStream outStream) throws IOException {
69 Args.notNull(outStream, "Output stream");
70 final InputStream inStream = this.content;
71 try {
72 final byte[] buffer = new byte[4096];
73 int readLen;
74 if (this.length < 0) {
75 // consume until EOF
76 while ((readLen = inStream.read(buffer)) != -1) {
77 outStream.write(buffer, 0, readLen);
78 }
79 } else {
80 // consume no more than length
81 long remaining = this.length;
82 while (remaining > 0) {
83 readLen = inStream.read(buffer, 0, (int)Math.min(4096, remaining));
84 if (readLen == -1) {
85 break;
86 }
87 outStream.write(buffer, 0, readLen);
88 remaining -= readLen;
89 }
90 }
91 } finally {
92 inStream.close();
93 }
94 }
95
96 @Override
97 public boolean isStreaming() {
98 return true;
99 }
100
101 }