1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. 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,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.buildcache.hash;
20
21 import java.io.IOException;
22 import java.nio.file.Path;
23
24 /**
25 * HashChecksum
26 */
27 public class HashChecksum {
28
29 private final Hash.Algorithm algorithm;
30 private final Hash.Checksum checksum;
31
32 HashChecksum(Hash.Algorithm algorithm, Hash.Checksum checksum) {
33 this.algorithm = algorithm;
34 this.checksum = checksum;
35 }
36
37 public String update(Path path) throws IOException {
38 return updateAndEncode(algorithm.hash(path));
39 }
40
41 public String update(byte[] bytes) {
42 return updateAndEncode(algorithm.hash(bytes));
43 }
44
45 /**
46 * @param hexHash hash value in hex format. This method doesn't accept generic text - could result in error
47 */
48 public String update(String hexHash) {
49 return updateAndEncode(HexUtils.decode(hexHash));
50 }
51
52 private String updateAndEncode(byte[] hash) {
53 checksum.update(hash);
54 return HexUtils.encode(hash);
55 }
56
57 public String digest() {
58 return HexUtils.encode(checksum.digest());
59 }
60 }