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: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.vfs;
31:
32: import java.io.IOException;
33: import java.io.InputStream;
34:
35: /**
36: * Unbuffered input stream to the stream impl
37: */
38: public class StreamImplInputStream extends InputStream {
39: private StreamImpl _stream;
40: private byte[] _buf = new byte[1];
41:
42: public StreamImplInputStream(StreamImpl stream) {
43: _stream = stream;
44: }
45:
46: /**
47: * Writes a byte to the underlying stream.
48: *
49: * @param v the value to write
50: */
51: public int read() throws IOException {
52: int len = _stream.read(_buf, 0, 1);
53:
54: if (len == 1)
55: return _buf[0] & 0xff;
56: else
57: return -1;
58: }
59:
60: /**
61: * Reads a buffer to the underlying stream.
62: *
63: * @param buffer the byte array to write.
64: * @param offset the offset into the byte array.
65: * @param length the number of bytes to write.
66: */
67: public int read(byte[] buffer, int offset, int length)
68: throws IOException {
69: return _stream.read(buffer, offset, length);
70: }
71:
72: /**
73: * Closes the stream.
74: */
75: public void close() throws IOException {
76: _stream.close();
77: }
78: }
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