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1   package org.apache.maven.properties.internal;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  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,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Properties;
23  
24  /**
25   * @since 3.2.3
26   */
27  public class SystemProperties
28  {
29      /**
30       * Thread-safe System.properties copy implementation.
31       *
32       * @see https://issues.apache.org/jira/browse/MNG-5670
33       */
34      public static void addSystemProperties( Properties props )
35      {
36          for ( String key : System.getProperties().stringPropertyNames() )
37          {
38              props.put( key, System.getProperty( key ) );
39          }
40      }
41  
42      /**
43       * Returns System.properties copy.
44       */
45      public static Properties getSystemProperties()
46      {
47          Properties systemProperties = new Properties();
48          addSystemProperties( systemProperties );
49          return systemProperties;
50      }
51  }