package org.apache.maven.surefire.booter;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Map;
  import java.util.Properties;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * @author Kristian Rosenvold
   */
  public class SystemPropertyManager
  {
  
      /**
       * Loads the properties, closes the stream
       *
       * @param inStream The stream to read from, will be closed
       * @return The properties
       * @throws java.io.IOException If something bad happens
       */
      public static PropertiesWrapper loadProperties( InputStream inStream )
          throws IOException
      {
          try
          {
              Properties p = new Properties();
              p.load( inStream );
              Map<String, String> map = new ConcurrentHashMap<String, String>( p.size() );
              for ( String key : p.stringPropertyNames() )
              {
                  map.put( key, p.getProperty( key ) );
              }
              return new PropertiesWrapper( map );
          }
          finally
          {
              close( inStream ); // @todo use try-with-resources JDK7, search in all code
          }
      }
  
      private static PropertiesWrapper loadProperties( File file )
          throws IOException
      {
          return loadProperties( new FileInputStream( file ) );
      }
  
      public static void setSystemProperties( File file )
          throws IOException
      {
          PropertiesWrapper p = loadProperties( file );
          p.setAsSystemProperties();
      }
  
      public static File writePropertiesFile( Properties properties, File tempDirectory, String name,
                                              boolean keepForkFiles )
          throws IOException
      {
          File file = File.createTempFile( name, "tmp", tempDirectory );
          if ( !keepForkFiles )
          {
              file.deleteOnExit();
          }
  
          writePropertiesFile( file, name, properties );
  
          return file;
      }
  
      public static void writePropertiesFile( File file, String name, Properties properties )
          throws IOException
      {
          FileOutputStream out = new FileOutputStream( file );
  
          try
          {
              properties.store( out, name );
         }
         finally
         {
             out.close();
         }
     }
 
     public static void close( InputStream inputStream )
     {
         if ( inputStream == null )
         {
             return;
         }
 
         try
         {
             inputStream.close();
         }
         catch ( IOException ex )
         {
             // ignore
         }
     }
 
 
 }