1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.javaflow.stores;
18
19 import org.apache.commons.javaflow.bytecode.transformation.ResourceTransformer;
20 import org.apache.commons.jci.stores.ResourceStore;
21
22
23 /**
24 * @author tcurdt
25 *
26 */
27 public final class TransformingResourceStore implements ResourceStore {
28
29 private final ResourceStore store;
30 private final ResourceTransformer[] transformers;
31
32 public TransformingResourceStore( final ResourceStore pStore, final ResourceTransformer[] pTransformers) {
33 store = pStore;
34 transformers = pTransformers;
35 }
36
37 public byte[] read(String resourceName) {
38 return store.read(resourceName);
39 }
40 public void remove(String resourceName) {
41 store.remove(resourceName);
42 }
43 public void write(String resourceName, byte[] resourceData) {
44 byte[] out = resourceData;
45
46 // FIXME: make the matching configurable
47 //if (resourceName.endsWith(".class")) {
48 byte[] in = resourceData;
49
50 for(int i=0; i<transformers.length; i++) {
51 out = transformers[i].transform(in);
52 in = out;
53 }
54 //}
55
56 store.write(resourceName, out);
57 }
58
59 public String toString() {
60 return store.toString();
61 }
62 }