01: /*
02: * This file is part of the Echo Web Application Framework (hereinafter "Echo").
03: * Copyright (C) 2002-2005 NextApp, Inc.
04: *
05: * Version: MPL 1.1/GPL 2.0/LGPL 2.1
06: *
07: * The contents of this file are subject to the Mozilla Public License Version
08: * 1.1 (the "License"); you may not use this file except in compliance with
09: * the License. You may obtain a copy of the License at
10: * http://www.mozilla.org/MPL/
11: *
12: * Software distributed under the License is distributed on an "AS IS" basis,
13: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14: * for the specific language governing rights and limitations under the
15: * License.
16: *
17: * Alternatively, the contents of this file may be used under the terms of
18: * either the GNU General Public License Version 2 or later (the "GPL"), or
19: * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20: * in which case the provisions of the GPL or the LGPL are applicable instead
21: * of those above. If you wish to allow use of your version of this file only
22: * under the terms of either the GPL or the LGPL, and not to allow others to
23: * use your version of this file under the terms of the MPL, indicate your
24: * decision by deleting the provisions above and replace them with the notice
25: * and other provisions required by the GPL or the LGPL. If you do not delete
26: * the provisions above, a recipient may use your version of this file under
27: * the terms of any one of the MPL, the GPL or the LGPL.
28: */
29:
30: package nextapp.echo2.webrender.util;
31:
32: import java.io.ByteArrayOutputStream;
33: import java.io.IOException;
34: import java.util.zip.GZIPOutputStream;
35:
36: /**
37: * Utility class for GZip compression.
38: */
39: public class GZipCompressor {
40:
41: /**
42: * Compresses a String.
43: *
44: * @param s the String to compress
45: * @return an array of bytes containing GZip-compression output
46: * @throws IOException
47: */
48: public static byte[] compress(String s) throws IOException {
49: ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
50: GZIPOutputStream gZipOut = new GZIPOutputStream(byteOut);
51: gZipOut.write(s.getBytes());
52: gZipOut.finish();
53: byteOut.close();
54: return byteOut.toByteArray();
55: }
56: }
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