01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.server.connection;
30:
31: import javax.servlet.ServletInputStream;
32: import java.io.IOException;
33: import java.io.InputStream;
34:
35: public class ServletInputStreamImpl extends ServletInputStream {
36: private InputStream _is;
37:
38: public ServletInputStreamImpl() {
39: }
40:
41: public void init(InputStream is) {
42: _is = is;
43: }
44:
45: public int available() throws IOException {
46: if (_is == null)
47: return -1;
48: else
49: return _is.available();
50: }
51:
52: /**
53: * Reads a byte from the input stream.
54: *
55: * @return the next byte or -1 on end of file.
56: */
57: public int read() throws IOException {
58: if (_is == null)
59: return -1;
60: else
61: return _is.read();
62: }
63:
64: public int read(byte[] buf, int offset, int len) throws IOException {
65: if (_is == null)
66: return -1;
67: else
68: return _is.read(buf, offset, len);
69: }
70:
71: public long skip(long n) throws IOException {
72: if (_is == null)
73: return -1;
74: else
75: return _is.skip(n);
76: }
77:
78: public void close() throws IOException {
79: }
80:
81: public void free() {
82: _is = null;
83: }
84: }
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