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Java > Open Source Codes > com > quadcap > http > server22 > HttpInputStream


1 package com.quadcap.http.server22;
2
3 /* Copyright 1998 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.io.BufferedInputStream JavaDoc;
42 import java.io.InputStream JavaDoc;
43 import java.io.IOException JavaDoc;
44
45 import javax.servlet.ServletInputStream JavaDoc;
46
47 import com.quadcap.net.server.WorkerInputStream;
48
49 import com.quadcap.util.Debug;
50
51 public class HttpInputStream extends ServletInputStream JavaDoc {
52     WorkerInputStream is;
53     int contentLength = -1;
54
55     public void reset(WorkerInputStream is) {
56         this.is = is;
57         this.contentLength = -1;
58     }
59
60     public void setContentLength(int len) {
61     this.contentLength = len;
62     }
63
64     public int read() throws IOException JavaDoc {
65     int c = -1;
66     if (contentLength > 0) {
67         contentLength--;
68         c = is.read();
69     } else if (contentLength == -1) {
70             c = is.read();
71         }
72     return c;
73     }
74
75     /**
76      * Close does nothing, to prevent clients from closing streams when they
77      * really don't want to
78      */
79     public void close() throws IOException JavaDoc {
80     }
81
82     public void reallyClose() throws IOException JavaDoc {
83         is.close();
84     }
85
86     public WorkerInputStream getInputStream() {
87         return is;
88     }
89 }
90
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