001package org.apache.maven.properties.internal;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.util.Properties;
023
024/**
025 * @since 3.2.3
026 */
027public class SystemProperties
028{
029    /**
030     * Thread-safe System.properties copy implementation.
031     *
032     * @see https://issues.apache.org/jira/browse/MNG-5670
033     */
034    public static void addSystemProperties( Properties props )
035    {
036        for ( String key : System.getProperties().stringPropertyNames() )
037        {
038            props.put( key, System.getProperty( key ) );
039        }
040    }
041
042    /**
043     * Returns System.properties copy.
044     */
045    public static Properties getSystemProperties()
046    {
047        Properties systemProperties = new Properties();
048        addSystemProperties( systemProperties );
049        return systemProperties;
050    }
051}