1 /*
2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/io/IdentityInputStream.java $
3  * $Revision: 560358 $
4  * $Date: 2007-07-27 12:30:42 -0700 (Fri, 27 Jul 2007) $
5  *
6  * ====================================================================
7  * Licensed to the Apache Software Foundation (ASF) under one
8  * or more contributor license agreements.  See the NOTICE file
9  * distributed with this work for additional information
10  * regarding copyright ownership.  The ASF licenses this file
11  * to you under the Apache License, Version 2.0 (the
12  * "License"); you may not use this file except in compliance
13  * with the License.  You may obtain a copy of the License at
14  *
15  *   http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing,
18  * software distributed under the License is distributed on an
19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20  * KIND, either express or implied.  See the License for the
21  * specific language governing permissions and limitations
22  * under the License.
23  * ====================================================================
24  *
25  * This software consists of voluntary contributions made by many
26  * individuals on behalf of the Apache Software Foundation.  For more
27  * information on the Apache Software Foundation, please see
28  * <http://www.apache.org/>.
29  *
30  */
31 
32 package org.apache.http.impl.io;
33 
34 import java.io.IOException;
35 import java.io.InputStream;
36 
37 import org.apache.http.io.SessionInputBuffer;
38 
39 /**
40  * A stream for reading from a {@link SessionInputBuffer session input buffer}.
41  *
42  * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
43  *
44  * @version $Revision: 560358 $
45  *
46  * @since 4.0
47  *
48  * @deprecated Please use {@link java.net.URL#openConnection} instead.
49  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
50  *     for further details.
51  */
52 @Deprecated
53 public class IdentityInputStream extends InputStream {
54 
55     private final SessionInputBuffer in;
56 
57     private boolean closed = false;
58 
IdentityInputStream(final SessionInputBuffer in)59     public IdentityInputStream(final SessionInputBuffer in) {
60         super();
61         if (in == null) {
62             throw new IllegalArgumentException("Session input buffer may not be null");
63         }
64         this.in = in;
65     }
66 
available()67     public int available() throws IOException {
68         if (!this.closed && this.in.isDataAvailable(10)) {
69             return 1;
70         } else {
71             return 0;
72         }
73     }
74 
close()75     public void close() throws IOException {
76         this.closed = true;
77     }
78 
read()79     public int read() throws IOException {
80         if (this.closed) {
81             return -1;
82         } else {
83             return this.in.read();
84         }
85     }
86 
read(final byte[] b, int off, int len)87     public int read(final byte[] b, int off, int len) throws IOException {
88         if (this.closed) {
89             return -1;
90         } else {
91             return this.in.read(b, off, len);
92         }
93     }
94 
95 }
96