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From dona...@apache.org
Subject cvs commit: jakarta-avalon-excalibur/io/src/java/org/apache/avalon/excalibur/io FileUtil.java
Date Thu, 30 May 2002 12:23:52 GMT
donaldp     02/05/30 05:23:52

  Modified:    io/src/java/org/apache/avalon/excalibur/io FileUtil.java
  Log:
  Add a utility method to schedule deletes of files/directorys
  
  Revision  Changes    Path
  1.29      +94 -6     jakarta-avalon-excalibur/io/src/java/org/apache/avalon/excalibur/io/FileUtil.java
  
  Index: FileUtil.java
  ===================================================================
  RCS file: /home/cvs/jakarta-avalon-excalibur/io/src/java/org/apache/avalon/excalibur/io/FileUtil.java,v
  retrieving revision 1.28
  retrieving revision 1.29
  diff -u -r1.28 -r1.29
  --- FileUtil.java	10 May 2002 02:51:14 -0000	1.28
  +++ FileUtil.java	30 May 2002 12:23:52 -0000	1.29
  @@ -44,7 +44,7 @@
    *
    * @author <a href="mailto:peter@apache.org">Peter Donald</a>
    * @author <a href="mailto:jefft@apache.org">Jeff Turner</a>
  - * @version CVS $Revision: 1.28 $ $Date: 2002/05/10 02:51:14 $
  + * @version CVS $Revision: 1.29 $ $Date: 2002/05/30 12:23:52 $
    * @since 4.0
    */
   public final class FileUtil
  @@ -633,13 +633,87 @@
           {
               if( !file.delete() )
               {
  -                final String message = "File " + file + " unable to be deleted.";
  +                final String message =
  +                    "File " + file + " unable to be deleted.";
                   throw new IOException( message );
               }
           }
       }
   
       /**
  +     * Schedule a file to be deleted when JVM exits.
  +     * If file is directory delete it and all sub-directories.
  +     */
  +    public static void forceDeleteOnExit( final File file )
  +        throws IOException
  +    {
  +        if( file.isDirectory() )
  +        {
  +            deleteDirectoryOnExit( file );
  +        }
  +        else
  +        {
  +            file.deleteOnExit();
  +        }
  +    }
  +
  +    /**
  +     * Recursively schedule directory for deletion on JVM exit.
  +     */
  +    private static void deleteDirectoryOnExit( final File directory )
  +        throws IOException
  +    {
  +        if( !directory.exists() )
  +        {
  +            return;
  +        }
  +
  +        cleanDirectoryOnExit( directory );
  +        directory.deleteOnExit();
  +    }
  +
  +    /**
  +     * Clean a directory without deleting it.
  +     */
  +    private static void cleanDirectoryOnExit( final File directory )
  +        throws IOException
  +    {
  +        if( !directory.exists() )
  +        {
  +            final String message = directory + " does not exist";
  +            throw new IllegalArgumentException( message );
  +        }
  +
  +        if( !directory.isDirectory() )
  +        {
  +            final String message = directory + " is not a directory";
  +            throw new IllegalArgumentException( message );
  +        }
  +
  +        IOException exception = null;
  +
  +        final File[] files = directory.listFiles();
  +        for( int i = 0; i < files.length; i++ )
  +        {
  +            final File file = files[ i ];
  +            try
  +            {
  +                FileUtil.forceDeleteOnExit( file );
  +            }
  +            catch( final IOException ioe )
  +            {
  +                exception = ioe;
  +            }
  +        }
  +
  +        if( null != exception )
  +        {
  +            throw exception;
  +        }
  +    }
  +
  +
  +    /**
        * Make a directory. If there already exists a file with specified name or
        * the directory is unable to be created then an exception is thrown.
        */
  @@ -686,9 +760,11 @@
           }
   
           cleanDirectory( directory );
  -        if( false == directory.delete() )
  +        if( !directory.delete() )
           {
  -            throw new IOException( "Directory " + directory + " unable to be deleted."
);
  +            final String message =
  +                "Directory " + directory + " unable to be deleted.";
  +            throw new IOException( message );
           }
       }
   
  @@ -719,13 +795,25 @@
               throw new IllegalArgumentException( message );
           }
   
  -        final File[] files = directory.listFiles();
  +        IOException exception = null;
   
  +        final File[] files = directory.listFiles();
           for( int i = 0; i < files.length; i++ )
           {
               final File file = files[ i ];
  +            try
  +            {
  +                FileUtil.forceDelete( file );
  +            }
  +            catch( final IOException ioe )
  +            {
  +                exception = ioe;
  +            }
  +        }
   
  -            FileUtil.forceDelete( file );
  +        if( null != exception )
  +        {
  +            throw exception;
           }
       }
   
  
  
  

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