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From djen...@apache.org
Subject svn commit: r821961 [17/30] - in /geronimo/sandbox/djencks/osgi/framework: ./ buildsupport/ buildsupport/car-maven-plugin/ buildsupport/car-maven-plugin/src/main/java/org/apache/geronimo/mavenplugins/car/ buildsupport/geronimo-maven-plugin/src/main/jav...
Date Mon, 05 Oct 2009 18:54:56 GMT
Added: geronimo/sandbox/djencks/osgi/framework/modules/geronimo-plugin/src/main/java/org/apache/geronimo/system/plugin/plexus/util/FileUtils.java
URL: http://svn.apache.org/viewvc/geronimo/sandbox/djencks/osgi/framework/modules/geronimo-plugin/src/main/java/org/apache/geronimo/system/plugin/plexus/util/FileUtils.java?rev=821961&view=auto
==============================================================================
--- geronimo/sandbox/djencks/osgi/framework/modules/geronimo-plugin/src/main/java/org/apache/geronimo/system/plugin/plexus/util/FileUtils.java (added)
+++ geronimo/sandbox/djencks/osgi/framework/modules/geronimo-plugin/src/main/java/org/apache/geronimo/system/plugin/plexus/util/FileUtils.java Mon Oct  5 18:54:50 2009
@@ -0,0 +1,2301 @@
+package org.apache.geronimo.system.plugin.plexus.util;
+
+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2001 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.codehaus.org/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" and
+ *    "Apache Turbine" must not be used to endorse or promote products
+ *    derived from this software without prior written permission. For
+ *    written permission, please contact codehaus@codehaus.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ *    "Apache Turbine", nor may "Apache" appear in their name, without
+ *    prior written permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.codehaus.org/>.
+ *
+ */
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.Reader;
+import java.io.Writer;
+import java.net.URL;
+import java.security.SecureRandom;
+import java.text.DecimalFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Random;
+import java.util.Vector;
+
+import org.apache.geronimo.system.plugin.plexus.util.io.FileInputStreamFacade;
+import org.apache.geronimo.system.plugin.plexus.util.io.InputStreamFacade;
+import org.apache.geronimo.system.plugin.plexus.util.io.URLInputStreamFacade;
+
+/**
+ * This class provides basic facilities for manipulating files and file paths.
+ * <p/>
+ * <h3>Path-related methods</h3>
+ * <p/>
+ * <p>Methods exist to retrieve the components of a typical file path. For example
+ * <code>/www/hosted/mysite/index.html</code>, can be broken into:
+ * <ul>
+ * <li><code>/www/hosted/mysite/</code> -- retrievable through {@link #getPath}</li>
+ * <li><code>index.html</code> -- retrievable through {@link #removePath}</li>
+ * <li><code>/www/hosted/mysite/index</code> -- retrievable through {@link #removeExtension}</li>
+ * <li><code>html</code> -- retrievable through {@link #getExtension}</li>
+ * </ul>
+ * There are also methods to {@link #catPath concatenate two paths}, {@link #resolveFile resolve a
+ * path relative to a File} and {@link #normalize} a path.
+ * </p>
+ * <p/>
+ * <h3>File-related methods</h3>
+ * <p/>
+ * There are methods to  create a {@link #toFile File from a URL}, copy a
+ * {@link #copyFileToDirectory File to a directory},
+ * copy a {@link #copyFile File to another File},
+ * copy a {@link #copyURLToFile URL's contents to a File},
+ * as well as methods to {@link #deleteDirectory(File) delete} and {@link #cleanDirectory(File)
+ * clean} a directory.
+ * </p>
+ * <p/>
+ * Common {@link java.io.File} manipulation routines.
+ * <p/>
+ * Taken from the commons-utils repo.
+ * Also code from Alexandria's FileUtils.
+ * And from Avalon Excalibur's IO.
+ * And from Ant.
+ *
+ * @author <a href="mailto:burton@relativity.yi.org">Kevin A. Burton</A>
+ * @author <a href="mailto:sanders@codehaus.org">Scott Sanders</a>
+ * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
+ * @author <a href="mailto:Christoph.Reck@dlr.de">Christoph.Reck</a>
+ * @author <a href="mailto:peter@codehaus.org">Peter Donald</a>
+ * @author <a href="mailto:jefft@codehaus.org">Jeff Turner</a>
+ * @version $Id: FileUtils.java 8145 2009-03-25 19:54:54Z bentmann $
+ */
+public class FileUtils
+{
+    /**
+     * The number of bytes in a kilobyte.
+     */
+    public static final int ONE_KB = 1024;
+
+    /**
+     * The number of bytes in a megabyte.
+     */
+    public static final int ONE_MB = ONE_KB * ONE_KB;
+
+    /**
+     * The number of bytes in a gigabyte.
+     */
+    public static final int ONE_GB = ONE_KB * ONE_MB;
+
+    /** The vm line separator */
+    public static String FS = System.getProperty( "file.separator" );
+
+    /**
+     * Non-valid Characters for naming files, folders under Windows: <code>":", "*", "?", "\"", "<", ">", "|"</code>
+     *
+     * @see <a href="http://support.microsoft.com/?scid=kb%3Ben-us%3B177506&x=12&y=13">
+     * http://support.microsoft.com/?scid=kb%3Ben-us%3B177506&x=12&y=13</a>
+     */
+    private static final String[] INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME = { ":", "*", "?", "\"", "<", ">", "|" };
+
+    /**
+     * @return the default excludes pattern
+     * @see DirectoryScanner#DEFAULTEXCLUDES
+     */
+    public static String[] getDefaultExcludes()
+    {
+        return DirectoryScanner.DEFAULTEXCLUDES;
+    }
+
+    /**
+     * @return the default excludes pattern as list.
+     * @see #getDefaultExcludes()
+     */
+    public static List getDefaultExcludesAsList()
+    {
+        return Arrays.asList( getDefaultExcludes() );
+    }
+
+    /**
+     * @return the default excludes pattern as comma separated string.
+     * @see DirectoryScanner#DEFAULTEXCLUDES
+     * @see StringUtils#join(Object[], String)
+     */
+    public static String getDefaultExcludesAsString()
+    {
+        return StringUtils.join( DirectoryScanner.DEFAULTEXCLUDES, "," );
+    }
+
+    /**
+     * Returns a human-readable version of the file size (original is in
+     * bytes).
+     *
+     * @param size The number of bytes.
+     * @return A human-readable display value (includes units).
+     */
+    public static String byteCountToDisplaySize( int size )
+    {
+        String displaySize;
+
+        if ( size / ONE_GB > 0 )
+        {
+            displaySize = String.valueOf( size / ONE_GB ) + " GB";
+        }
+        else if ( size / ONE_MB > 0 )
+        {
+            displaySize = String.valueOf( size / ONE_MB ) + " MB";
+        }
+        else if ( size / ONE_KB > 0 )
+        {
+            displaySize = String.valueOf( size / ONE_KB ) + " KB";
+        }
+        else
+        {
+            displaySize = String.valueOf( size ) + " bytes";
+        }
+
+        return displaySize;
+    }
+
+    /**
+     * Returns the directory path portion of a file specification string.
+     * Matches the equally named unix command.
+     *
+     * @param filename the file path
+     * @return The directory portion excluding the ending file separator.
+     */
+    public static String dirname( String filename )
+    {
+        int i = filename.lastIndexOf( File.separator );
+        return ( i >= 0 ? filename.substring( 0, i ) : "" );
+    }
+
+    /**
+     * Returns the filename portion of a file specification string.
+     *
+     * @param filename the file path
+     * @return The filename string with extension.
+     */
+    public static String filename( String filename )
+    {
+        int i = filename.lastIndexOf( File.separator );
+        return ( i >= 0 ? filename.substring( i + 1 ) : filename );
+    }
+
+    /**
+     * Returns the filename portion of a file specification string.
+     * Matches the equally named unix command.
+     *
+     * @param filename the file path
+     * @return The filename string without extension.
+     */
+    public static String basename( String filename )
+    {
+        return basename( filename, extension( filename ) );
+    }
+
+    /**
+     * Returns the filename portion of a file specification string.
+     * Matches the equally named unix command.
+     *
+     * @param filename the file path
+     * @param suffix the file suffix
+     * @return the basename of the file
+     */
+    public static String basename( String filename, String suffix )
+    {
+        int i = filename.lastIndexOf( File.separator ) + 1;
+        int lastDot = ( ( suffix != null ) && ( suffix.length() > 0 ) ) ? filename.lastIndexOf( suffix ) : -1;
+
+        if ( lastDot >= 0 )
+        {
+            return filename.substring( i, lastDot );
+        }
+        else if ( i > 0 )
+        {
+            return filename.substring( i );
+        }
+        else
+        {
+            return filename; // else returns all (no path and no extension)
+        }
+    }
+
+    /**
+     * Returns the extension portion of a file specification string.
+     * This everything after the last dot '.' in the filename (NOT including
+     * the dot).
+     *
+     * @param filename the file path
+     * @return the extension of the file
+     */
+    public static String extension( String filename )
+    {
+        // Ensure the last dot is after the last file separator
+        int lastSep = filename.lastIndexOf( File.separatorChar );
+        int lastDot;
+        if ( lastSep < 0 )
+        {
+            lastDot = filename.lastIndexOf( '.' );
+        }
+        else
+        {
+            lastDot = filename.substring( lastSep + 1 ).lastIndexOf( '.' );
+            if ( lastDot >= 0 )
+            {
+                lastDot += lastSep + 1;
+            }
+        }
+
+        if ( lastDot >= 0 && lastDot > lastSep)
+        {
+            return filename.substring( lastDot + 1 );
+        }
+
+        return "";
+    }
+
+    /**
+     * Check if a file exits.
+     *
+     * @param fileName the file path.
+     * @return true if file exists.
+     */
+    public static boolean fileExists( String fileName )
+    {
+        File file = new File( fileName );
+        return file.exists();
+    }
+
+    /**
+     * Note: the file content is read with platform encoding.
+     *
+     * @param file the file path
+     * @return the file content using the platform encoding.
+     * @throws IOException if any
+     */
+    public static String fileRead( String file )
+        throws IOException
+    {
+        return fileRead( file, null );
+    }
+
+    /**
+     * @param file the file path
+     * @param encoding the wanted encoding
+     * @return the file content using the specified encoding.
+     * @throws IOException if any
+     */
+    public static String fileRead( String file, String encoding )
+        throws IOException
+    {
+        return fileRead( new File( file ), encoding );
+    }
+
+    /**
+     * Note: the file content is read with platform encoding
+     *
+     * @param file the file path
+     * @return the file content using the platform encoding.
+     * @throws IOException if any
+     */
+    public static String fileRead( File file )
+        throws IOException
+    {
+        return fileRead( file, null);
+    }
+
+    /**
+     * @param file the file path
+     * @param encoding the wanted encoding
+     * @return the file content using the specified encoding.
+     * @throws IOException if any
+     */
+    public static String fileRead( File file, String encoding )
+        throws IOException
+    {
+        StringBuffer buf = new StringBuffer();
+
+        Reader reader = null;
+
+        try
+        {
+            if ( encoding != null )
+            {
+                reader = new InputStreamReader( new FileInputStream( file ), encoding );
+            }
+            else
+            {
+                reader = new InputStreamReader( new FileInputStream( file ) );
+            }
+            int count;
+            char[] b = new char[512];
+            while ( ( count = reader.read( b ) ) > 0 )  // blocking read
+            {
+                buf.append( b, 0, count );
+            }
+        }
+        finally
+        {
+            IOUtil.close( reader );
+        }
+
+        return buf.toString();
+    }
+
+    /**
+     * Appends data to a file. The file will be created if it does not exist.
+     * Note: the data is written with platform encoding
+     *
+     * @param fileName The path of the file to write.
+     * @param data The content to write to the file.
+     * @throws IOException if any
+     */
+    public static void fileAppend( String fileName, String data )
+        throws IOException
+    {
+        fileAppend( fileName, null, data);
+    }
+
+    /**
+     * Appends data to a file. The file will be created if it does not exist.
+     *
+     * @param fileName The path of the file to write.
+     * @param encoding The encoding of the file.
+     * @param data The content to write to the file.
+     * @throws IOException if any
+     */
+    public static void fileAppend( String fileName, String encoding, String data )
+        throws IOException
+    {
+        FileOutputStream out = null;
+        try
+        {
+            out = new FileOutputStream( fileName, true );
+            if ( encoding != null ) {
+                out.write( data.getBytes( encoding ) );
+            }
+            else
+            {
+                out.write( data.getBytes() );
+            }
+        }
+        finally
+        {
+            IOUtil.close( out );
+        }
+    }
+
+    /**
+     * Writes data to a file. The file will be created if it does not exist.
+     * Note: the data is written with platform encoding
+     *
+     * @param fileName The path of the file to write.
+     * @param data The content to write to the file.
+     * @throws IOException if any
+     */
+    public static void fileWrite( String fileName, String data )
+        throws IOException
+    {
+        fileWrite( fileName, null, data );
+    }
+
+    /**
+     * Writes data to a file. The file will be created if it does not exist.
+     *
+     * @param fileName The path of the file to write.
+     * @param encoding The encoding of the file.
+     * @param data The content to write to the file.
+     * @throws IOException if any
+     */
+    public static void fileWrite( String fileName, String encoding, String data )
+        throws IOException
+    {
+        FileOutputStream out = null;
+        try
+        {
+            out = new FileOutputStream( fileName );
+            if ( encoding != null )
+            {
+                out.write( data.getBytes( encoding ) );
+            }
+            else
+            {
+                out.write( data.getBytes() );
+            }
+        }
+        finally
+        {
+            IOUtil.close( out );
+        }
+    }
+
+    /**
+     * Deletes a file.
+     *
+     * @param fileName The path of the file to delete.
+     */
+    public static void fileDelete( String fileName )
+    {
+        File file = new File( fileName );
+        file.delete();
+    }
+
+    /**
+     * Waits for NFS to propagate a file creation, imposing a timeout.
+     *
+     * @param fileName The path of the file.
+     * @param seconds  The maximum time in seconds to wait.
+     * @return True if file exists.
+     */
+    public static boolean waitFor( String fileName, int seconds )
+    {
+        return waitFor( new File( fileName ), seconds );
+    }
+
+    /**
+     * Waits for NFS to propagate a file creation, imposing a timeout.
+     *
+     * @param file The file.
+     * @param seconds  The maximum time in seconds to wait.
+     * @return True if file exists.
+     */
+    public static boolean waitFor( File file, int seconds )
+    {
+        int timeout = 0;
+        int tick = 0;
+        while ( !file.exists() )
+        {
+            if ( tick++ >= 10 )
+            {
+                tick = 0;
+                if ( timeout++ > seconds )
+                {
+                    return false;
+                }
+            }
+            try
+            {
+                Thread.sleep( 100 );
+            }
+            catch ( InterruptedException ignore )
+            {
+                // nop
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Creates a file handle.
+     *
+     * @param fileName The path of the file.
+     * @return A <code>File</code> manager.
+     */
+    public static File getFile( String fileName )
+    {
+        return new File( fileName );
+    }
+
+    /**
+     * Given a directory and an array of extensions return an array of compliant files.
+     * <p/>
+     * TODO Should an ignore list be passed in?
+     * TODO Should a recurse flag be passed in?
+     * <p/>
+     * The given extensions should be like "java" and not like ".java"
+     *
+     * @param directory The path of the directory.
+     * @param extensions an array of expected extensions.
+     * @return An array of files for the wanted extensions.
+     */
+    public static String[] getFilesFromExtension( String directory, String[] extensions )
+    {
+        Vector files = new Vector();
+
+        File currentDir = new File( directory );
+
+        String[] unknownFiles = currentDir.list();
+
+        if ( unknownFiles == null )
+        {
+            return new String[0];
+        }
+
+        for ( int i = 0; i < unknownFiles.length; ++i )
+        {
+            String currentFileName = directory + System.getProperty( "file.separator" ) + unknownFiles[i];
+            File currentFile = new File( currentFileName );
+
+            if ( currentFile.isDirectory() )
+            {
+                //ignore all CVS directories...
+                if ( currentFile.getName().equals( "CVS" ) )
+                {
+                    continue;
+                }
+
+                //ok... transverse into this directory and get all the files... then combine
+                //them with the current list.
+
+                String[] fetchFiles = getFilesFromExtension( currentFileName, extensions );
+                files = blendFilesToVector( files, fetchFiles );
+            }
+            else
+            {
+                //ok... add the file
+
+                String add = currentFile.getAbsolutePath();
+                if ( isValidFile( add, extensions ) )
+                {
+                    files.addElement( add );
+                }
+            }
+        }
+
+        //ok... move the Vector into the files list...
+        String[] foundFiles = new String[files.size()];
+        files.copyInto( foundFiles );
+
+        return foundFiles;
+    }
+
+    /**
+     * Private helper method for getFilesFromExtension()
+     */
+    private static Vector blendFilesToVector( Vector v, String[] files )
+    {
+        for ( int i = 0; i < files.length; ++i )
+        {
+            v.addElement( files[i] );
+        }
+
+        return v;
+    }
+
+    /**
+     * Checks to see if a file is of a particular type(s).
+     * Note that if the file does not have an extension, an empty string
+     * (&quot;&quot;) is matched for.
+     */
+    private static boolean isValidFile( String file, String[] extensions )
+    {
+        String extension = extension( file );
+        if ( extension == null )
+        {
+            extension = "";
+        }
+
+        //ok.. now that we have the "extension" go through the current know
+        //excepted extensions and determine if this one is OK.
+
+        for ( int i = 0; i < extensions.length; ++i )
+        {
+            if ( extensions[i].equals( extension ) )
+            {
+                return true;
+            }
+        }
+
+        return false;
+
+    }
+
+    /**
+     * Simple way to make a directory
+     *
+     * @param dir the directory to create
+     * @throws IllegalArgumentException if the dir contains illegal Windows characters under Windows OS.
+     * @see #INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME
+     */
+    public static void mkdir( String dir )
+    {
+        File file = new File( dir );
+
+        if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
+        {
+            if ( !isValidWindowsFileName( file ) )
+            {
+                throw new IllegalArgumentException( "The file (" + dir
+                    + ") cannot contain any of the following characters: \n"
+                    + StringUtils.join( INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME, " " ) );
+            }
+        }
+
+        if ( !file.exists() )
+        {
+            file.mkdirs();
+        }
+    }
+
+    /**
+     * Compare the contents of two files to determine if they are equal or not.
+     *
+     * @param file1 the first file
+     * @param file2 the second file
+     * @return true if the content of the files are equal or they both don't exist, false otherwise
+     * @throws IOException if any
+     */
+    public static boolean contentEquals( final File file1, final File file2 )
+        throws IOException
+    {
+        final boolean file1Exists = file1.exists();
+        if ( file1Exists != file2.exists() )
+        {
+            return false;
+        }
+
+        if ( !file1Exists )
+        {
+            // two not existing files are equal
+            return true;
+        }
+
+        if ( file1.isDirectory() || file2.isDirectory() )
+        {
+            // don't want to compare directory contents
+            return false;
+        }
+
+        InputStream input1 = null;
+        InputStream input2 = null;
+        try
+        {
+            input1 = new FileInputStream( file1 );
+            input2 = new FileInputStream( file2 );
+            return IOUtil.contentEquals( input1, input2 );
+
+        }
+        finally
+        {
+            IOUtil.close( input1 );
+            IOUtil.close( input2 );
+        }
+    }
+
+    /**
+     * Convert from a <code>URL</code> to a <code>File</code>.
+     *
+     * @param url File URL.
+     * @return The equivalent <code>File</code> object, or <code>null</code> if the URL's protocol
+     *         is not <code>file</code>
+     */
+    public static File toFile( final URL url )
+    {
+        if ( url == null || !url.getProtocol().equalsIgnoreCase( "file" ) )
+        {
+            return null;
+        }
+
+        String filename = url.getFile().replace( '/', File.separatorChar );
+        int pos = -1;
+        while ( ( pos = filename.indexOf( '%', pos + 1 ) ) >= 0 )
+        {
+            if ( pos + 2 < filename.length() )
+            {
+                String hexStr = filename.substring( pos + 1, pos + 3 );
+                char ch = (char) Integer.parseInt( hexStr, 16 );
+                filename = filename.substring( 0, pos ) + ch + filename.substring( pos + 3 );
+            }
+        }
+        return new File( filename );
+    }
+
+    /**
+     * Convert the array of Files into a list of URLs.
+     *
+     * @param files the array of files
+     * @return the array of URLs
+     * @throws IOException if an error occurs
+     */
+    public static URL[] toURLs( final File[] files )
+        throws IOException
+    {
+        final URL[] urls = new URL[files.length];
+
+        for ( int i = 0; i < urls.length; i++ )
+        {
+            urls[i] = files[i].toURL();
+        }
+
+        return urls;
+    }
+
+    /**
+     * Remove extension from filename.
+     * ie
+     * <pre>
+     * foo.txt    --> foo
+     * a\b\c.jpg --> a\b\c
+     * a\b\c     --> a\b\c
+     * </pre>
+     *
+     * @param filename the path of the file
+     * @return the filename minus extension
+     */
+    public static String removeExtension( final String filename )
+    {
+        String ext = extension(filename);
+
+        if ( "".equals(ext) )
+        {
+            return filename;
+        }
+
+        final int index = filename.lastIndexOf( ext ) - 1;
+        return filename.substring( 0, index );
+    }
+
+    /**
+     * Get extension from filename.
+     * ie
+     * <pre>
+     * foo.txt    --> "txt"
+     * a\b\c.jpg --> "jpg"
+     * a\b\c     --> ""
+     * </pre>
+     *
+     * @param filename the path of the file
+     * @return the extension of filename or "" if none
+     */
+    public static String getExtension( final String filename )
+    {
+        return extension(filename);
+    }
+
+    /**
+     * Remove path from filename. Equivalent to the unix command <code>basename</code>
+     * ie.
+     * <pre>
+     * a/b/c.txt --> c.txt
+     * a.txt     --> a.txt
+     * </pre>
+     *
+     * @param filepath the path of the file
+     * @return the filename minus path
+     */
+    public static String removePath( final String filepath )
+    {
+        return removePath( filepath, File.separatorChar );
+    }
+
+    /**
+     * Remove path from filename.
+     * ie.
+     * <pre>
+     * a/b/c.txt --> c.txt
+     * a.txt     --> a.txt
+     * </pre>
+     *
+     * @param filepath the path of the file
+     * @param fileSeparatorChar the file separator character like <b>/</b> on Unix plateforms.
+     * @return the filename minus path
+     */
+    public static String removePath( final String filepath, final char fileSeparatorChar )
+    {
+        final int index = filepath.lastIndexOf( fileSeparatorChar );
+
+        if ( -1 == index )
+        {
+            return filepath;
+        }
+
+        return filepath.substring( index + 1 );
+    }
+
+    /**
+     * Get path from filename. Roughly equivalent to the unix command <code>dirname</code>.
+     * ie.
+     * <pre>
+     * a/b/c.txt --> a/b
+     * a.txt     --> ""
+     * </pre>
+     *
+     * @param filepath the filepath
+     * @return the filename minus path
+     */
+    public static String getPath( final String filepath )
+    {
+        return getPath( filepath, File.separatorChar );
+    }
+
+    /**
+     * Get path from filename.
+     * ie.
+     * <pre>
+     * a/b/c.txt --> a/b
+     * a.txt     --> ""
+     * </pre>
+     *
+     * @param filepath the filepath
+     * @param fileSeparatorChar the file separator character like <b>/</b> on Unix plateforms.
+     * @return the filename minus path
+     */
+    public static String getPath( final String filepath, final char fileSeparatorChar )
+    {
+        final int index = filepath.lastIndexOf( fileSeparatorChar );
+        if ( -1 == index )
+        {
+            return "";
+        }
+
+        return filepath.substring( 0, index );
+    }
+
+    /**
+     * Copy file from source to destination. If <code>destinationDirectory</code> does not exist, it
+     * (and any parent directories) will be created. If a file <code>source</code> in
+     * <code>destinationDirectory</code> exists, it will be overwritten.
+     *
+     * @param source               An existing <code>File</code> to copy.
+     * @param destinationDirectory A directory to copy <code>source</code> into.
+     * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
+     * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
+     * @throws IOException                   if <code>source</code> does not exist, the file in
+     *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
+     */
+    public static void copyFileToDirectory( final String source, final String destinationDirectory )
+        throws IOException
+    {
+        copyFileToDirectory( new File( source ), new File( destinationDirectory ) );
+    }
+
+    /**
+     * Copy file from source to destination only if source is newer than the target file.
+     * If <code>destinationDirectory</code> does not exist, it
+     * (and any parent directories) will be created. If a file <code>source</code> in
+     * <code>destinationDirectory</code> exists, it will be overwritten.
+     *
+     * @param source               An existing <code>File</code> to copy.
+     * @param destinationDirectory A directory to copy <code>source</code> into.
+     * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
+     * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
+     * @throws IOException                   if <code>source</code> does not exist, the file in
+     *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
+     */
+    public static void copyFileToDirectoryIfModified( final String source, final String destinationDirectory )
+        throws IOException
+    {
+        copyFileToDirectoryIfModified( new File( source ), new File( destinationDirectory ) );
+    }
+
+    /**
+     * Copy file from source to destination. If <code>destinationDirectory</code> does not exist, it
+     * (and any parent directories) will be created. If a file <code>source</code> in
+     * <code>destinationDirectory</code> exists, it will be overwritten.
+     *
+     * @param source               An existing <code>File</code> to copy.
+     * @param destinationDirectory A directory to copy <code>source</code> into.
+     * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
+     * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
+     * @throws IOException                   if <code>source</code> does not exist, the file in
+     *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
+     */
+    public static void copyFileToDirectory( final File source, final File destinationDirectory )
+        throws IOException
+    {
+        if ( destinationDirectory.exists() && !destinationDirectory.isDirectory() )
+        {
+            throw new IllegalArgumentException( "Destination is not a directory" );
+        }
+
+        copyFile( source, new File( destinationDirectory, source.getName() ) );
+    }
+
+    /**
+     * Copy file from source to destination only if source is newer than the target file.
+     * If <code>destinationDirectory</code> does not exist, it
+     * (and any parent directories) will be created. If a file <code>source</code> in
+     * <code>destinationDirectory</code> exists, it will be overwritten.
+     *
+     * @param source               An existing <code>File</code> to copy.
+     * @param destinationDirectory A directory to copy <code>source</code> into.
+     * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
+     * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
+     * @throws IOException                   if <code>source</code> does not exist, the file in
+     *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
+     */
+    public static void copyFileToDirectoryIfModified( final File source, final File destinationDirectory )
+        throws IOException
+    {
+        if ( destinationDirectory.exists() && !destinationDirectory.isDirectory() )
+        {
+            throw new IllegalArgumentException( "Destination is not a directory" );
+        }
+
+        copyFileIfModified( source, new File( destinationDirectory, source.getName() ) );
+    }
+
+
+    /**
+     * Copy file from source to destination. The directories up to <code>destination</code> will be
+     * created if they don't already exist. <code>destination</code> will be overwritten if it
+     * already exists.
+     *
+     * @param source      An existing non-directory <code>File</code> to copy bytes from.
+     * @param destination A non-directory <code>File</code> to write bytes to (possibly
+     *                    overwriting).
+     * @throws IOException                   if <code>source</code> does not exist, <code>destination</code> cannot be
+     *                                       written to, or an IO error occurs during copying.
+     * @throws java.io.FileNotFoundException if <code>destination</code> is a directory
+     *                                       (use {@link #copyFileToDirectory}).
+     */
+    public static void copyFile( final File source, final File destination )
+        throws IOException
+    {
+        //check source exists
+        if ( !source.exists() )
+        {
+            final String message = "File " + source + " does not exist";
+            throw new IOException( message );
+        }
+
+        //check source != destination, see PLXUTILS-10
+        if ( source.getCanonicalPath().equals( destination.getCanonicalPath() ) )
+        {
+            //if they are equal, we can exit the method without doing any work
+            return;
+        }
+
+        copyStreamToFile( new FileInputStreamFacade( source ), destination);
+
+        if ( source.length() != destination.length() )
+        {
+            final String message = "Failed to copy full contents from " + source + " to " + destination;
+            throw new IOException( message );
+        }
+    }
+
+    /**
+     * Copy file from source to destination only if source timestamp is later than the destination timestamp.
+     * The directories up to <code>destination</code> will be created if they don't already exist.
+     * <code>destination</code> will be overwritten if it already exists.
+     *
+     * @param source An existing non-directory <code>File</code> to copy bytes from.
+     * @param destination A non-directory <code>File</code> to write bytes to (possibly
+     * overwriting).
+     * @return true if no problem occured
+     * @throws IOException if <code>source</code> does not exist, <code>destination</code> cannot be
+     * written to, or an IO error occurs during copying.
+     * @throws FileNotFoundException if <code>destination</code> is a directory
+     * (use {@link #copyFileToDirectory}).
+     */
+    public static boolean copyFileIfModified( final File source, final File destination )
+        throws IOException
+    {
+        if ( destination.lastModified() < source.lastModified() )
+        {
+            copyFile( source, destination );
+
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Copies bytes from the URL <code>source</code> to a file <code>destination</code>.
+     * The directories up to <code>destination</code> will be created if they don't already exist.
+     * <code>destination</code> will be overwritten if it already exists.
+     *
+     * @param source A <code>URL</code> to copy bytes from.
+     * @param destination A non-directory <code>File</code> to write bytes to (possibly
+     * overwriting).
+     * @throws IOException if
+     * <ul>
+     * <li><code>source</code> URL cannot be opened</li>
+     * <li><code>destination</code> cannot be written to</li>
+     * <li>an IO error occurs during copying</li>
+     * </ul>
+     */
+    public static void copyURLToFile( final URL source, final File destination )
+        throws IOException
+    {
+        copyStreamToFile( new URLInputStreamFacade( source ) , destination);
+    }
+
+    /**
+     * Copies bytes from the {@link InputStream} <code>source</code> to a file <code>destination</code>.
+     * The directories up to <code>destination</code> will be created if they don't already exist.
+     * <code>destination</code> will be overwritten if it already exists.
+     *
+     * @param source An {@link InputStream} to copy bytes from. This stream is
+     * guaranteed to be closed.
+     * @param destination A non-directory <code>File</code> to write bytes to (possibly
+     * overwriting).
+     * @throws IOException if
+     * <ul>
+     * <li><code>source</code> URL cannot be opened</li>
+     * <li><code>destination</code> cannot be written to</li>
+     * <li>an IO error occurs during copying</li>
+     * </ul>
+     */
+    public static void copyStreamToFile( final InputStreamFacade source, final File destination )
+        throws IOException
+    {
+        //does destination directory exist ?
+        if ( destination.getParentFile() != null && !destination.getParentFile().exists() )
+        {
+            destination.getParentFile().mkdirs();
+        }
+
+        //make sure we can write to destination
+        if ( destination.exists() && !destination.canWrite() )
+        {
+            final String message = "Unable to open file " + destination + " for writing.";
+            throw new IOException( message );
+        }
+
+        InputStream input = null;
+        FileOutputStream output = null;
+        try
+        {
+            input = source.getInputStream();
+            output = new FileOutputStream( destination );
+            IOUtil.copy( input, output );
+        }
+        finally
+        {
+            IOUtil.close( input );
+            IOUtil.close( output );
+        }
+    }
+
+    /**
+     * Normalize a path.
+     * Eliminates "/../" and "/./" in a string. Returns <code>null</code> if the ..'s went past the
+     * root.
+     * Eg:
+     * <pre>
+     * /foo//               -->     /foo/
+     * /foo/./              -->     /foo/
+     * /foo/../bar          -->     /bar
+     * /foo/../bar/         -->     /bar/
+     * /foo/../bar/../baz   -->     /baz
+     * //foo//./bar         -->     /foo/bar
+     * /../                 -->     null
+     * </pre>
+     *
+     * @param path the path to normalize
+     * @return the normalized String, or <code>null</code> if too many ..'s.
+     */
+    public static String normalize( final String path )
+    {
+        String normalized = path;
+        // Resolve occurrences of "//" in the normalized path
+        while ( true )
+        {
+            int index = normalized.indexOf( "//" );
+            if ( index < 0 )
+            {
+                break;
+            }
+            normalized = normalized.substring( 0, index ) + normalized.substring( index + 1 );
+        }
+
+        // Resolve occurrences of "/./" in the normalized path
+        while ( true )
+        {
+            int index = normalized.indexOf( "/./" );
+            if ( index < 0 )
+            {
+                break;
+            }
+            normalized = normalized.substring( 0, index ) + normalized.substring( index + 2 );
+        }
+
+        // Resolve occurrences of "/../" in the normalized path
+        while ( true )
+        {
+            int index = normalized.indexOf( "/../" );
+            if ( index < 0 )
+            {
+                break;
+            }
+            if ( index == 0 )
+            {
+                return null;  // Trying to go outside our context
+            }
+            int index2 = normalized.lastIndexOf( '/', index - 1 );
+            normalized = normalized.substring( 0, index2 ) + normalized.substring( index + 3 );
+        }
+
+        // Return the normalized path that we have completed
+        return normalized;
+    }
+
+    /**
+     * Will concatenate 2 paths.  Paths with <code>..</code> will be
+     * properly handled.
+     * <p>Eg.,<br />
+     * <code>/a/b/c</code> + <code>d</code> = <code>/a/b/d</code><br />
+     * <code>/a/b/c</code> + <code>../d</code> = <code>/a/d</code><br />
+     * </p>
+     * <p/>
+     * Thieved from Tomcat sources...
+     *
+     * @param lookupPath a path
+     * @param path the path to concatenate
+     * @return The concatenated paths, or null if error occurs
+     */
+    public static String catPath( final String lookupPath, final String path )
+    {
+        // Cut off the last slash and everything beyond
+        int index = lookupPath.lastIndexOf( "/" );
+        String lookup = lookupPath.substring( 0, index );
+        String pth = path;
+
+        // Deal with .. by chopping dirs off the lookup path
+        while ( pth.startsWith( "../" ) )
+        {
+            if ( lookup.length() > 0 )
+            {
+                index = lookup.lastIndexOf( "/" );
+                lookup = lookup.substring( 0, index );
+            }
+            else
+            {
+                // More ..'s than dirs, return null
+                return null;
+            }
+
+            index = pth.indexOf( "../" ) + 3;
+            pth = pth.substring( index );
+        }
+
+        return new StringBuffer( lookup ).append( "/" ).append( pth ).toString();
+    }
+
+    /**
+     * Resolve a file <code>filename</code> to it's canonical form. If <code>filename</code> is
+     * relative (doesn't start with <code>/</code>), it will be resolved relative to
+     * <code>baseFile</code>, otherwise it is treated as a normal root-relative path.
+     *
+     * @param baseFile Where to resolve <code>filename</code> from, if <code>filename</code> is
+     * relative.
+     * @param filename Absolute or relative file path to resolve.
+     * @return The canonical <code>File</code> of <code>filename</code>.
+     */
+    public static File resolveFile( final File baseFile, String filename )
+    {
+        String filenm = filename;
+        if ( '/' != File.separatorChar )
+        {
+            filenm = filename.replace( '/', File.separatorChar );
+        }
+
+        if ( '\\' != File.separatorChar )
+        {
+            filenm = filename.replace( '\\', File.separatorChar );
+        }
+
+        // deal with absolute files
+        if ( filenm.startsWith( File.separator ) || ( Os.isFamily( Os.FAMILY_WINDOWS ) && filenm.indexOf( ":" ) > 0 ) )
+        {
+            File file = new File( filenm );
+
+            try
+            {
+                file = file.getCanonicalFile();
+            }
+            catch ( final IOException ioe )
+            {
+                // nop
+            }
+
+            return file;
+        }
+        // FIXME: I'm almost certain this // removal is unnecessary, as getAbsoluteFile() strips
+        // them. However, I'm not sure about this UNC stuff. (JT)
+        final char[] chars = filename.toCharArray();
+        final StringBuffer sb = new StringBuffer();
+
+        //remove duplicate file separators in succession - except
+        //on win32 at start of filename as UNC filenames can
+        //be \\AComputer\AShare\myfile.txt
+        int start = 0;
+        if ( '\\' == File.separatorChar )
+        {
+            sb.append( filenm.charAt( 0 ) );
+            start++;
+        }
+
+        for ( int i = start; i < chars.length; i++ )
+        {
+            final boolean doubleSeparator = File.separatorChar == chars[i] && File.separatorChar == chars[i - 1];
+
+            if ( !doubleSeparator )
+            {
+                sb.append( chars[i] );
+            }
+        }
+
+        filenm = sb.toString();
+
+        //must be relative
+        File file = ( new File( baseFile, filenm ) ).getAbsoluteFile();
+
+        try
+        {
+            file = file.getCanonicalFile();
+        }
+        catch ( final IOException ioe )
+        {
+            // nop
+        }
+
+        return file;
+    }
+
+    /**
+     * Delete a file. If file is directory delete it and all sub-directories.
+     *
+     * @param file the file path
+     * @throws IOException if any
+     */
+    public static void forceDelete( final String file )
+        throws IOException
+    {
+        forceDelete( new File( file ) );
+    }
+
+    /**
+     * Delete a file. If file is directory delete it and all sub-directories.
+     *
+     * @param file a file
+     * @throws IOException if any
+     */
+    public static void forceDelete( final File file )
+        throws IOException
+    {
+        if ( file.isDirectory() )
+        {
+            deleteDirectory( file );
+        }
+        else
+        {
+            /*
+             * NOTE: Always try to delete the file even if it appears to be non-existent. This will ensure that a
+             * symlink whose target does not exist is deleted, too.
+             */
+            boolean filePresent = file.getCanonicalFile().exists();
+            if ( !deleteFile( file ) && filePresent )
+            {
+                final String message = "File " + file + " unable to be deleted.";
+                throw new IOException( message );
+            }
+        }
+    }
+
+    /**
+     * Accommodate Windows bug encountered in both Sun and IBM JDKs.
+     * Others possible. If the delete does not work, call System.gc(),
+     * wait a little and try again.
+     *
+     * @param file a file
+     * @throws IOException if any
+     */
+    private static boolean deleteFile( File file )
+        throws IOException
+    {
+        if ( file.isDirectory() )
+        {
+            throw new IOException( "File " + file + " isn't a file." );
+        }
+
+        if ( !file.delete() )
+        {
+            if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
+            {
+                file = file.getCanonicalFile();
+                System.gc();
+            }
+
+            try
+            {
+                Thread.sleep( 10 );
+                return file.delete();
+            }
+            catch ( InterruptedException ex )
+            {
+                return file.delete();
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Schedule a file to be deleted when JVM exits.
+     * If file is directory delete it and all sub-directories.
+     *
+     * @param file a file
+     * @throws IOException if any
+     */
+    public static void forceDeleteOnExit( final File file )
+        throws IOException
+    {
+        if ( !file.exists() )
+        {
+            return;
+        }
+
+        if ( file.isDirectory() )
+        {
+            deleteDirectoryOnExit( file );
+        }
+        else
+        {
+            file.deleteOnExit();
+        }
+    }
+
+    /**
+     * Recursively schedule directory for deletion on JVM exit.
+     *
+     * @param file a directory
+     * @throws IOException if any
+     */
+    private static void deleteDirectoryOnExit( final File directory )
+        throws IOException
+    {
+        if ( !directory.exists() )
+        {
+            return;
+        }
+
+        cleanDirectoryOnExit( directory );
+        directory.deleteOnExit();
+    }
+
+    /**
+     * Clean a directory without deleting it.
+     *
+     * @param file a directory
+     * @throws IOException if any
+     */
+    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
+            {
+                forceDeleteOnExit( file );
+            }
+            catch ( final IOException ioe )
+            {
+                exception = ioe;
+            }
+        }
+
+        if ( null != exception )
+        {
+            throw exception;
+        }
+    }
+
+
+    /**
+     * Make a directory.
+     *
+     * @param file not null
+     * @throws IOException If there already exists a file with specified name or
+     * the directory is unable to be created
+     * @throws IllegalArgumentException if the file contains illegal Windows characters under Windows OS.
+     * @see #INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME
+     */
+    public static void forceMkdir( final File file )
+        throws IOException
+    {
+        if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
+        {
+            if ( !isValidWindowsFileName( file ) )
+            {
+                throw new IllegalArgumentException( "The file (" + file.getAbsolutePath()
+                    + ") cannot contain any of the following characters: \n"
+                    + StringUtils.join( INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME, " " ) );
+            }
+        }
+
+        if ( file.exists() )
+        {
+            if ( file.isFile() )
+            {
+                final String message =
+                    "File " + file + " exists and is " + "not a directory. Unable to create directory.";
+                throw new IOException( message );
+            }
+        }
+        else
+        {
+            if ( false == file.mkdirs() )
+            {
+                final String message = "Unable to create directory " + file;
+                throw new IOException( message );
+            }
+        }
+    }
+
+    /**
+     * Recursively delete a directory.
+     *
+     * @param directory a directory
+     * @throws IOException if any
+     */
+    public static void deleteDirectory( final String directory )
+        throws IOException
+    {
+        deleteDirectory( new File( directory ) );
+    }
+
+    /**
+     * Recursively delete a directory.
+     *
+     * @param directory a directory
+     * @throws IOException if any
+     */
+    public static void deleteDirectory( final File directory )
+        throws IOException
+    {
+        if ( !directory.exists() )
+        {
+            return;
+        }
+
+        cleanDirectory( directory );
+        if ( !directory.delete() )
+        {
+            final String message = "Directory " + directory + " unable to be deleted.";
+            throw new IOException( message );
+        }
+    }
+
+    /**
+     * Clean a directory without deleting it.
+     *
+     * @param directory a directory
+     * @throws IOException if any
+     */
+    public static void cleanDirectory( final String directory )
+        throws IOException
+    {
+        cleanDirectory( new File( directory ) );
+    }
+
+    /**
+     * Clean a directory without deleting it.
+     *
+     * @param directory a directory
+     * @throws IOException if any
+     */
+    public static void cleanDirectory( 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();
+
+        if ( files == null )
+        {
+            return;
+        }
+
+        for ( int i = 0; i < files.length; i++ )
+        {
+            final File file = files[i];
+            try
+            {
+                forceDelete( file );
+            }
+            catch ( final IOException ioe )
+            {
+                exception = ioe;
+            }
+        }
+
+        if ( null != exception )
+        {
+            throw exception;
+        }
+    }
+
+    /**
+     * Recursively count size of a directory.
+     *
+     * @param directory a directory
+     * @return size of directory in bytes.
+     */
+    public static long sizeOfDirectory( final String directory )
+    {
+        return sizeOfDirectory( new File( directory ) );
+    }
+
+    /**
+     * Recursively count size of a directory.
+     *
+     * @param directory a directory
+     * @return size of directory in bytes.
+     */
+    public static long sizeOfDirectory( final File directory )
+    {
+        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 );
+        }
+
+        long size = 0;
+
+        final File[] files = directory.listFiles();
+        for ( int i = 0; i < files.length; i++ )
+        {
+            final File file = files[i];
+
+            if ( file.isDirectory() )
+            {
+                size += sizeOfDirectory( file );
+            }
+            else
+            {
+                size += file.length();
+            }
+        }
+
+        return size;
+    }
+
+    /**
+     * Return the files contained in the directory, using inclusion and exclusion Ant patterns,
+     * including the directory name in each of the files
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @return a list of File objects
+     * @throws IOException
+     * @see #getFileNames( File, String, String, boolean )
+     */
+    public static List getFiles( File directory, String includes, String excludes )
+        throws IOException
+    {
+        return getFiles( directory, includes, excludes, true );
+    }
+
+    /**
+     * Return the files contained in the directory, using inclusion and exclusion Ant patterns
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir true to include the base dir in each file
+     * @return a list of File objects
+     * @throws IOException
+     * @see #getFileNames( File, String, String, boolean )
+     */
+    public static List getFiles( File directory, String includes, String excludes, boolean includeBasedir )
+        throws IOException
+    {
+        List fileNames = getFileNames( directory, includes, excludes, includeBasedir );
+
+        List files = new ArrayList();
+
+        for ( Iterator i = fileNames.iterator(); i.hasNext(); )
+        {
+            files.add( new File( (String) i.next() ) );
+        }
+
+        return files;
+    }
+
+    /**
+     * Return a list of files as String depending options.
+     * This method use case sensitive file name.
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir true to include the base dir in each String of file
+     * @return a list of files as String
+     * @throws IOException
+     */
+    public static List getFileNames( File directory, String includes, String excludes, boolean includeBasedir )
+        throws IOException
+    {
+        return getFileNames( directory, includes, excludes, includeBasedir, true );
+    }
+
+    /**
+     * Return a list of files as String depending options.
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir  true to include the base dir in each String of file
+     * @param isCaseSensitive true if case sensitive
+     * @return a list of files as String
+     * @throws IOException
+     */
+    public static List getFileNames( File directory, String includes, String excludes, boolean includeBasedir,
+                                     boolean isCaseSensitive )
+        throws IOException
+    {
+        return getFileAndDirectoryNames( directory, includes, excludes, includeBasedir, isCaseSensitive, true, false );
+    }
+
+    /**
+     * Return a list of directories as String depending options.
+     * This method use case sensitive file name.
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir true to include the base dir in each String of file
+     * @return a list of directories as String
+     * @throws IOException
+     */
+    public static List getDirectoryNames( File directory, String includes, String excludes, boolean includeBasedir )
+        throws IOException
+    {
+        return getDirectoryNames( directory, includes, excludes, includeBasedir, true );
+    }
+
+    /**
+     * Return a list of directories as String depending options.
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir  true to include the base dir in each String of file
+     * @param isCaseSensitive true if case sensitive
+     * @return a list of directories as String
+     * @throws IOException
+     */
+    public static List getDirectoryNames( File directory, String includes, String excludes, boolean includeBasedir,
+                                          boolean isCaseSensitive )
+        throws IOException
+    {
+        return getFileAndDirectoryNames( directory, includes, excludes, includeBasedir, isCaseSensitive, false, true );
+    }
+
+    /**
+     * Return a list of files as String depending options.
+     *
+     * @param directory the directory to scan
+     * @param includes the includes pattern, comma separated
+     * @param excludes the excludes pattern, comma separated
+     * @param includeBasedir  true to include the base dir in each String of file
+     * @param isCaseSensitive true if case sensitive
+     * @param getFiles true if get files
+     * @param getDirectories  true if get directories
+     * @return a list of files as String
+     * @throws IOException
+     */
+    public static List getFileAndDirectoryNames( File directory, String includes, String excludes,
+                                                 boolean includeBasedir, boolean isCaseSensitive, boolean getFiles,
+                                                 boolean getDirectories )
+        throws IOException
+    {
+        DirectoryScanner scanner = new DirectoryScanner();
+
+        scanner.setBasedir( directory );
+
+        if ( includes != null )
+        {
+            scanner.setIncludes( StringUtils.split( includes, "," ) );
+        }
+
+        if ( excludes != null )
+        {
+            scanner.setExcludes( StringUtils.split( excludes, "," ) );
+        }
+
+        scanner.setCaseSensitive( isCaseSensitive );
+
+        scanner.scan();
+
+        List list = new ArrayList();
+
+        if ( getFiles )
+        {
+            String[] files = scanner.getIncludedFiles();
+
+            for ( int i = 0; i < files.length; i++ )
+            {
+                if ( includeBasedir )
+                {
+                    list.add( directory + FileUtils.FS + files[i] );
+                }
+                else
+                {
+                    list.add( files[i] );
+                }
+            }
+        }
+
+        if ( getDirectories )
+        {
+            String[] directories = scanner.getIncludedDirectories();
+
+            for ( int i = 0; i < directories.length; i++ )
+            {
+                if ( includeBasedir )
+                {
+                    list.add( directory + FileUtils.FS + directories[i] );
+                }
+                else
+                {
+                    list.add( directories[i] );
+                }
+            }
+        }
+
+        return list;
+    }
+
+    /**
+     * Copy a directory to an other one.
+     *
+     * @param sourceDirectory the source dir
+     * @param destinationDirectory the target dir
+     * @throws IOException if any
+     */
+    public static void copyDirectory( File sourceDirectory, File destinationDirectory )
+        throws IOException
+    {
+        copyDirectory( sourceDirectory, destinationDirectory, "**", null );
+    }
+
+    /**
+     * Copy a directory to an other one.
+     *
+     * @param sourceDirectory the source dir
+     * @param destinationDirectory the target dir
+     * @param includes include pattern
+     * @param excludes exlucde pattern
+     * @throws IOException if any
+     * @see #getFiles(File, String, String)
+     */
+    public static void copyDirectory( File sourceDirectory, File destinationDirectory, String includes,
+                                      String excludes )
+        throws IOException
+    {
+        if ( !sourceDirectory.exists() )
+        {
+            return;
+        }
+
+        List files = getFiles( sourceDirectory, includes, excludes );
+
+        for ( Iterator i = files.iterator(); i.hasNext(); )
+        {
+            File file = (File) i.next();
+
+            copyFileToDirectory( file, destinationDirectory );
+        }
+    }
+
+    /**
+     * Copies a entire directory layout : no files will be copied only directories
+     * <p/>
+     * Note:
+     * <ul>
+     * <li>It will include empty directories.
+     * <li>The <code>sourceDirectory</code> must exists.
+     * </ul>
+     *
+     * @param sourceDirectory the source dir
+     * @param destinationDirectory the target dir
+     * @param includes include pattern
+     * @param excludes exlucde pattern
+     * @since 1.5.7
+     * @throws IOException if any
+     */
+    public static void copyDirectoryLayout( File sourceDirectory, File destinationDirectory, String[] includes,
+                                               String[] excludes )
+        throws IOException
+    {
+        if ( sourceDirectory == null )
+        {
+            throw new IOException( "source directory can't be null." );
+        }
+
+        if ( destinationDirectory == null )
+        {
+            throw new IOException( "destination directory can't be null." );
+        }
+
+        if ( sourceDirectory.equals( destinationDirectory ) )
+        {
+            throw new IOException( "source and destination are the same directory." );
+        }
+
+        if ( !sourceDirectory.exists() )
+        {
+            throw new IOException( "Source directory doesn't exists (" + sourceDirectory.getAbsolutePath() + ")." );
+        }
+
+        DirectoryScanner scanner = new DirectoryScanner();
+
+        scanner.setBasedir( sourceDirectory );
+
+        if ( includes != null && includes.length >= 1 )
+        {
+            scanner.setIncludes( includes );
+        }
+        else
+        {
+            scanner.setIncludes( new String[] { "**" } );
+        }
+
+        if ( excludes != null && excludes.length >= 1 )
+        {
+            scanner.setExcludes( excludes );
+        }
+
+        scanner.addDefaultExcludes();
+        scanner.scan();
+        List includedDirectories = Arrays.asList( scanner.getIncludedDirectories() );
+
+        for (Iterator i = includedDirectories.iterator();i.hasNext();)
+        {
+            String name = (String)i.next();
+
+            File source = new File(sourceDirectory, name);
+
+            if ( source.equals( sourceDirectory ) )
+            {
+                continue;
+            }
+
+            File destination = new File(destinationDirectory, name);
+            destination.mkdirs();
+        }
+    }
+
+    /**
+     * Copies a entire directory structure.
+     * <p/>
+     * Note:
+     * <ul>
+     * <li>It will include empty directories.
+     * <li>The <code>sourceDirectory</code> must exists.
+     * </ul>
+     *
+     * @param sourceDirectory the source dir
+     * @param destinationDirectory the target dir
+     * @throws IOException if any
+     */
+    public static void copyDirectoryStructure( File sourceDirectory, File destinationDirectory )
+        throws IOException
+    {
+        copyDirectoryStructure( sourceDirectory, destinationDirectory, destinationDirectory, false );
+    }
+
+    /**
+     * Copies an entire directory structure but only source files with timestamp later than the destinations'.
+     * <p/>
+     * Note:
+     * <ul>
+     * <li>It will include empty directories.
+     * <li>The <code>sourceDirectory</code> must exists.
+     * </ul>
+     *
+     * @param sourceDirectory the source dir
+     * @param destinationDirectory the target dir
+     * @throws IOException if any
+     */
+    public static void copyDirectoryStructureIfModified( File sourceDirectory, File destinationDirectory )
+        throws IOException
+    {
+        copyDirectoryStructure( sourceDirectory, destinationDirectory, destinationDirectory, true );
+    }
+
+    private static void copyDirectoryStructure( File sourceDirectory, File destinationDirectory,
+                                                File rootDestinationDirectory, boolean onlyModifiedFiles )
+        throws IOException
+    {
+        if ( sourceDirectory == null )
+        {
+            throw new IOException( "source directory can't be null." );
+        }
+
+        if ( destinationDirectory == null )
+        {
+            throw new IOException( "destination directory can't be null." );
+        }
+
+        if ( sourceDirectory.equals( destinationDirectory ) )
+        {
+            throw new IOException( "source and destination are the same directory." );
+        }
+
+        if ( !sourceDirectory.exists() )
+        {
+            throw new IOException( "Source directory doesn't exists (" + sourceDirectory.getAbsolutePath() + ")." );
+        }
+
+        File[] files = sourceDirectory.listFiles();
+
+        String sourcePath = sourceDirectory.getAbsolutePath();
+
+        for ( int i = 0; i < files.length; i++ )
+        {
+            File file = files[i];
+
+            if ( file.equals( rootDestinationDirectory ) )
+            {
+                // We don't copy the destination directory in itself
+                continue;
+            }
+
+            String dest = file.getAbsolutePath();
+
+            dest = dest.substring( sourcePath.length() + 1 );
+
+            File destination = new File( destinationDirectory, dest );
+
+            if ( file.isFile() )
+            {
+                destination = destination.getParentFile();
+
+                if ( onlyModifiedFiles )
+                {
+                    copyFileToDirectoryIfModified( file, destination );
+                }
+                else
+                {
+                    copyFileToDirectory( file, destination );
+                }
+            }
+            else if ( file.isDirectory() )
+            {
+                if ( !destination.exists() && !destination.mkdirs() )
+                {
+                    throw new IOException(
+                        "Could not create destination directory '" + destination.getAbsolutePath() + "'." );
+                }
+
+                copyDirectoryStructure( file, destination, rootDestinationDirectory, onlyModifiedFiles );
+            }
+            else
+            {
+                throw new IOException( "Unknown file type: " + file.getAbsolutePath() );
+            }
+        }
+    }
+
+    /**
+     * Renames a file, even if that involves crossing file system boundaries.
+     * <p/>
+     * <p>This will remove <code>to</code> (if it exists), ensure that
+     * <code>to</code>'s parent directory exists and move
+     * <code>from</code>, which involves deleting <code>from</code> as
+     * well.</p>
+     *
+     * @param from the file to move
+     * @param to   the new file name
+     * @throws IOException if anything bad happens during this process.
+     * Note that <code>to</code> may have been deleted already when this happens.
+     */
+    public static void rename( File from, File to )
+        throws IOException
+    {
+        if ( to.exists() && !to.delete() )
+        {
+            throw new IOException( "Failed to delete " + to + " while trying to rename " + from );
+        }
+
+        File parent = to.getParentFile();
+        if ( parent != null && !parent.exists() && !parent.mkdirs() )
+        {
+            throw new IOException( "Failed to create directory " + parent + " while trying to rename " + from );
+        }
+
+        if ( !from.renameTo( to ) )
+        {
+            copyFile( from, to );
+            if ( !from.delete() )
+            {
+                throw new IOException( "Failed to delete " + from + " while trying to rename it." );
+            }
+        }
+    }
+
+    /**
+     * Create a temporary file in a given directory.
+     * <p/>
+     * <p>The file denoted by the returned abstract pathname did not
+     * exist before this method was invoked, any subsequent invocation
+     * of this method will yield a different file name.</p>
+     * <p/>
+     * The filename is prefixNNNNNsuffix where NNNN is a random number
+     * </p>
+     * <p>This method is different to {@link File#createTempFile(String, String, File)} of JDK 1.2
+     * as it doesn't create the file itself.
+     * It uses the location pointed to by java.io.tmpdir
+     * when the parentDir attribute is
+     * null.</p>
+     * <p>To delete automatically the file created by this method, use the
+     * {@link File#deleteOnExit()} method.</p>
+     *
+     * @param prefix prefix before the random number
+     * @param suffix file extension; include the '.'
+     * @param parentDir Directory to create the temporary file in <code>-java.io.tmpdir</code>
+     * used if not specificed
+     * @return a File reference to the new temporary file.
+     */
+    public static File createTempFile( String prefix, String suffix, File parentDir )
+    {
+        File result = null;
+        String parent = System.getProperty( "java.io.tmpdir" );
+        if ( parentDir != null )
+        {
+            parent = parentDir.getPath();
+        }
+        DecimalFormat fmt = new DecimalFormat( "#####" );
+        SecureRandom secureRandom = new SecureRandom();
+        long secureInitializer = secureRandom.nextLong();
+        Random rand = new Random( secureInitializer + Runtime.getRuntime().freeMemory() );
+        synchronized ( rand )
+        {
+            do
+            {
+                result = new File( parent, prefix + fmt.format( Math.abs( rand.nextInt() ) ) + suffix );
+            }
+            while ( result.exists() );
+        }
+
+        return result;
+    }
+
+    /**
+     * <b>If wrappers is null or empty, the file will be copy only if to.lastModified() < from.lastModified()</b>
+     * @param from the file to copy
+     * @param to the destination file
+     * @param encoding the file output encoding (only if wrappers is not empty)
+     * @param wrappers array of {@link FilterWrapper}
+     * @throws IOException if an IO error occurs during copying or filtering
+     */
+    public static void copyFile( File from, File to, String encoding, FilterWrapper[] wrappers )
+        throws IOException
+    {
+        copyFile( from, to, encoding, wrappers, false );
+    }
+
+    public static abstract class FilterWrapper
+    {
+        public abstract Reader getReader( Reader fileReader );
+    }
+
+    /**
+     * <b>If wrappers is null or empty, the file will be copy only if to.lastModified() < from.lastModified() or if overwrite is true</b>
+     * @param from the file to copy
+     * @param to the destination file
+     * @param encoding the file output encoding (only if wrappers is not empty)
+     * @param wrappers array of {@link FilterWrapper}
+     * @param overwrite if true and f wrappers is null or empty, the file will be copy
+     *        enven if to.lastModified() < from.lastModified()
+     * @throws IOException if an IO error occurs during copying or filtering
+     * @since 1.5.2
+     */
+    public static void copyFile( File from, File to, String encoding, FilterWrapper[] wrappers, boolean overwrite )
+        throws IOException
+    {
+        if ( wrappers != null && wrappers.length > 0 )
+        {
+            // buffer so it isn't reading a byte at a time!
+            Reader fileReader = null;
+            Writer fileWriter = null;
+            try
+            {
+                if ( encoding == null || encoding.length() < 1 )
+                {
+                    fileReader = new BufferedReader( new FileReader( from ) );
+                    fileWriter = new FileWriter( to );
+                }
+                else
+                {
+                    FileInputStream instream = new FileInputStream( from );
+
+                    FileOutputStream outstream = new FileOutputStream( to );
+
+                    fileReader = new BufferedReader( new InputStreamReader( instream, encoding ) );
+
+                    fileWriter = new OutputStreamWriter( outstream, encoding );
+                }
+
+                Reader reader = fileReader;
+                for ( int i = 0; i < wrappers.length; i++ )
+                {
+                    FilterWrapper wrapper = wrappers[i];
+                    reader = wrapper.getReader( reader );
+                }
+
+                IOUtil.copy( reader, fileWriter );
+            }
+            finally
+            {
+                IOUtil.close( fileReader );
+                IOUtil.close( fileWriter );
+            }
+        }
+        else
+        {
+            if ( to.lastModified() < from.lastModified() || overwrite )
+            {
+                copyFile( from, to );
+            }
+        }
+    }
+
+    /**
+     * Note: the file content is read with platform encoding
+     *
+     * @param file the file
+     * @return a List containing every every line not starting with # and not empty
+     * @throws IOException if any
+     */
+    public static List loadFile( File file )
+        throws IOException
+    {
+        List lines = new ArrayList();
+
+        if ( file.exists() )
+        {
+            BufferedReader reader = new BufferedReader( new FileReader( file ) );
+
+            String line = reader.readLine();
+
+            while ( line != null )
+            {
+                line = line.trim();
+
+                if ( !line.startsWith( "#" ) && line.length() != 0 )
+                {
+                    lines.add( line );
+                }
+                line = reader.readLine();
+            }
+
+            reader.close();
+        }
+
+        return lines;
+    }
+
+    /**
+     * For Windows OS, check if the file name contains any of the following characters:
+     * <code>":", "*", "?", "\"", "<", ">", "|"</code>
+     *
+     * @param f not null file
+     * @return <code>false</code> if the file path contains any of forbidden Windows characters,
+     * <code>true</code> if the Os is not Windows or if the file path respect the Windows constraints.
+     * @see #INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME
+     * @since 1.5.2
+     */
+    public static boolean isValidWindowsFileName( File f )
+    {
+        if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
+        {
+            if ( StringUtils.indexOfAny( f.getName(), INVALID_CHARACTERS_FOR_WINDOWS_FILE_NAME ) != -1 )
+            {
+                return false;
+            }
+
+            if ( f.getParentFile()!= null)
+            {
+                return isValidWindowsFileName( f.getParentFile() );
+            }
+        }
+
+        return true;
+    }
+}

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