1 package org.codehaus.plexus.util;
2
3 /*
4 * Copyright The Codehaus 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.IOException;
21 import java.io.InputStream;
22 import java.net.URL;
23 import java.nio.file.Files;
24 import java.util.Objects;
25 import java.util.Properties;
26
27 /**
28 * Static methods to create Properties loaded from various sources.
29 *
30 * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
31 * @author <a href="mailto:mmaczka@interia.pl">Michal Maczka</a>
32 */
33 public class PropertyUtils {
34
35 public static Properties loadProperties(final URL url) throws IOException {
36 return loadProperties(Objects.requireNonNull(url, "url").openStream());
37 }
38
39 public static Properties loadProperties(final File file) throws IOException {
40 return loadProperties(
41 Files.newInputStream(Objects.requireNonNull(file, "file").toPath()));
42 }
43
44 public static Properties loadProperties(final InputStream is) throws IOException {
45 final Properties properties = new Properties();
46
47 // Make sure the properties stream is valid
48 if (is != null) {
49 try (InputStream in = is) {
50 properties.load(in);
51 }
52 }
53
54 return properties;
55 }
56 }