Mercurial > hg > blitz_stable
comparison src/com/go/trove/util/DeflaterOutputStream.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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-1:000000000000 | 0:3dc0c5604566 |
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1 /* ==================================================================== | |
2 * Trove - Copyright (c) 1997-2001 Walt Disney Internet Group | |
3 * ==================================================================== | |
4 * The Tea Software License, Version 1.1 | |
5 * | |
6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. | |
7 * | |
8 * Redistribution and use in source and binary forms, with or without | |
9 * modification, are permitted provided that the following conditions | |
10 * are met: | |
11 * | |
12 * 1. Redistributions of source code must retain the above copyright | |
13 * notice, this list of conditions and the following disclaimer. | |
14 * | |
15 * 2. Redistributions in binary form must reproduce the above copyright | |
16 * notice, this list of conditions and the following disclaimer in | |
17 * the documentation and/or other materials provided with the | |
18 * distribution. | |
19 * | |
20 * 3. The end-user documentation included with the redistribution, | |
21 * if any, must include the following acknowledgment: | |
22 * "This product includes software developed by the | |
23 * Walt Disney Internet Group (http://opensource.go.com/)." | |
24 * Alternately, this acknowledgment may appear in the software itself, | |
25 * if and wherever such third-party acknowledgments normally appear. | |
26 * | |
27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must | |
28 * not be used to endorse or promote products derived from this | |
29 * software without prior written permission. For written | |
30 * permission, please contact opensource@dig.com. | |
31 * | |
32 * 5. Products derived from this software may not be called "Tea", | |
33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", | |
34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior | |
35 * written permission of the Walt Disney Internet Group. | |
36 * | |
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED | |
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
40 * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS | |
41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 * ==================================================================== | |
49 * | |
50 * For more information about Tea, please see http://opensource.go.com/. | |
51 */ | |
52 | |
53 package com.go.trove.util; | |
54 | |
55 import java.io.*; | |
56 | |
57 /****************************************************************************** | |
58 * Just like {@link java.util.zip.DeflaterOutputStream}, except uses a | |
59 * different {@link Deflater} implementation. | |
60 * | |
61 * @author Brian S O'Neill | |
62 * @version | |
63 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/06/13 <!-- $--> | |
64 */ | |
65 public class DeflaterOutputStream extends FilterOutputStream { | |
66 protected Deflater mDeflater; | |
67 protected byte[] mBuffer; | |
68 | |
69 public DeflaterOutputStream(OutputStream out, Deflater def, byte[] buf) { | |
70 super(out); | |
71 mDeflater = def; | |
72 mBuffer = buf; | |
73 } | |
74 | |
75 public DeflaterOutputStream(OutputStream out, Deflater def, int size) { | |
76 this(out, def, new byte[size]); | |
77 } | |
78 | |
79 public DeflaterOutputStream(OutputStream out, Deflater def) { | |
80 this(out, def, 512); | |
81 } | |
82 | |
83 public DeflaterOutputStream(OutputStream out) { | |
84 this(out, new Deflater()); | |
85 } | |
86 | |
87 public void write(int b) throws IOException { | |
88 write(new byte[]{(byte)b}, 0, 1); | |
89 } | |
90 | |
91 public void write(byte[] b, int off, int len) throws IOException { | |
92 if (mDeflater.finished()) { | |
93 throw new IOException("write beyond end of stream"); | |
94 } | |
95 mDeflater.setInput(b, off, len); | |
96 while (!mDeflater.needsInput()) { | |
97 deflate(); | |
98 } | |
99 } | |
100 | |
101 public void flush() throws IOException { | |
102 if (!mDeflater.finished()) { | |
103 mDeflater.flush(); | |
104 int len; | |
105 do { | |
106 len = deflate(); | |
107 } while (len == mBuffer.length); | |
108 } | |
109 } | |
110 | |
111 public void fullFlush() throws IOException { | |
112 if (!mDeflater.finished()) { | |
113 mDeflater.fullFlush(); | |
114 int len; | |
115 do { | |
116 len = deflate(); | |
117 } while (len == mBuffer.length); | |
118 } | |
119 } | |
120 | |
121 public void finish() throws IOException { | |
122 if (!mDeflater.finished()) { | |
123 mDeflater.finish(); | |
124 do { | |
125 deflate(); | |
126 } while (!mDeflater.finished()); | |
127 } | |
128 } | |
129 | |
130 public void close() throws IOException { | |
131 finish(); | |
132 super.close(); | |
133 } | |
134 | |
135 private int deflate() throws IOException { | |
136 int len = mDeflater.deflate(mBuffer, 0, mBuffer.length); | |
137 if (len > 0) { | |
138 out.write(mBuffer, 0, len); | |
139 } | |
140 return len; | |
141 } | |
142 } |