1 package org.codehaus.plexus.util;
2
3 import java.util.Objects;
4
5 /*
6 * Copyright The Codehaus Foundation.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 import java.util.Properties;
22 import java.io.File;
23 import java.io.InputStream;
24 import java.io.IOException;
25 import java.net.URL;
26 import java.nio.file.Files;
27
28 /**
29 * Static methods to create Properties loaded from various sources.
30 *
31 * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
32 * @author <a href="mailto:mmaczka@interia.pl">Michal Maczka</a>
33 */
34 public class PropertyUtils
35 {
36
37 public static Properties loadProperties( final URL url )
38 throws IOException
39 {
40 return loadProperties( Objects.requireNonNull( url, "url" ).openStream() );
41 }
42
43 public static Properties loadProperties( final File file )
44 throws IOException
45 {
46 return loadProperties( Files.newInputStream( Objects.requireNonNull( file, "file" ).toPath() ) );
47 }
48
49 public static Properties loadProperties( final InputStream is )
50 throws IOException
51 {
52 final Properties properties = new Properties();
53
54 // Make sure the properties stream is valid
55 if ( is != null )
56 {
57 try ( InputStream in = is )
58 {
59 properties.load( in );
60 }
61 }
62
63 return properties;
64 }
65
66 }