IdentityInputStream.java revision d42abb2fd917184764daf22f5f299e848b8701d7 
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
32package org.apache.http.impl.io;
33
34import java.io.IOException;
35import java.io.InputStream;
36
37import 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
53public class IdentityInputStream extends InputStream {
54
55    private final SessionInputBuffer in;
56
57    private boolean closed = false;
58
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
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
75    public void close() throws IOException {
76        this.closed = true;
77    }
78
79    public int read() throws IOException {
80        if (this.closed) {
81            return -1;
82        } else {
83            return this.in.read();
84        }
85    }
86
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