1 /*
2 * Copyright 2005 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.vafer.jar;
17
18 import java.io.IOException;
19 import java.util.jar.JarEntry;
20 import java.util.jar.JarInputStream;
21
22 import org.apache.commons.io.IOUtils;
23 import org.apache.commons.io.output.NullOutputStream;
24 import org.vafer.jar.handler.JarHandler;
25
26
27 public final class JarProcessor {
28
29 public void processJars( final Jar[] pJars, final JarHandler pHandler ) throws IOException {
30
31 pHandler.onStartProcessing();
32
33 for (int i = 0; i < pJars.length; i++) {
34 final Jar jar = pJars[i];
35
36 pHandler.onStartJar(jar);
37
38 final JarInputStream inputStream = new JarInputStream(jar.getInputStream());
39
40 while (true) {
41 final JarEntry entry = inputStream.getNextJarEntry();
42
43 if (entry == null) {
44 break;
45 }
46
47 // TODO: really?
48 if (entry.isDirectory()) {
49 // ignore directory entries
50 IOUtils.copy(inputStream, new NullOutputStream());
51 continue;
52 }
53
54 pHandler.onResource(entry, inputStream);
55 }
56
57 pHandler.onStopJar(jar);
58 }
59
60 pHandler.onStopProcessing();
61 }
62 }