1 package org.codehaus.mojo.javascript.compress;
2
3 /*
4 * Copyright 2001-2005 The Apache Software Foundation.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 import java.io.File;
20 import java.io.FileInputStream;
21 import java.io.FileOutputStream;
22
23 import org.inconspicuous.jsmin.JSMin;
24
25 /**
26 * Use the Java version of the JSMin algorithm to compress a set of JS files.
27 * For simplicity, the JSMin code (one class) is included in the plugin.
28 *
29 * @see http://www.crockford.com/javascript/jsmin.html
30 * @author <a href="mailto:nicolas@apache.org">nicolas De Loof</a>
31 */
32 public class JSMinCompressor
33 implements JSCompressor
34 {
35
36 /**
37 * {@inheritDoc}
38 *
39 * @see org.codehaus.mojo.javascript.compress.JSCompressor#compress(java.io.File,
40 * java.io.File, int, int)
41 */
42 public void compress( File input, File output, int level, int language )
43 throws CompressionException
44 {
45 try
46 {
47 new JSMin( new FileInputStream( input ), new FileOutputStream( output ) ).jsmin();
48 }
49 catch ( Exception e )
50 {
51 throw new CompressionException( "Failed to create compressed file", e, input );
52 }
53 }
54
55 /**
56 * Set a the JSCompressorLogger implementation that will receive logs
57 *
58 * @param logger a logger
59 */
60 public void setLogger(JSCompressorLogger logger) throws CompressionException
61 {
62 // Unused
63 }
64
65 /**
66 * Return current JSCompressorLogger used for logging
67 *
68 * @return the current JSCompressorLogger used for logging
69 */
70 public JSCompressorLogger getLogger() throws CompressionException
71 {
72 return null; // Unused
73 }
74 }