| package org.apache.maven.it.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.apache.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 apache@apache.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.apache.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.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; |
| |
| /** |
| * 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@apache.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@apache.org">Peter Donald</a> |
| * @author <a href="mailto:jefft@apache.org">Jeff Turner</a> |
| * @version $Id$ |
| */ |
| 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; |
| |
| public static String FS = System.getProperty( "file.separator" ); |
| |
| public static String[] getDefaultExcludes() |
| { |
| return DirectoryScanner.DEFAULTEXCLUDES; |
| } |
| |
| public static List getDefaultExcludesAsList() |
| { |
| return Arrays.asList( getDefaultExcludes() ); |
| } |
| |
| /** |
| * 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. |
| * |
| * @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. |
| * |
| * @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. |
| * |
| * @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. |
| */ |
| 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). |
| */ |
| public static String extension( String filename ) |
| { |
| int lastDot = filename.lastIndexOf( '.' ); |
| |
| if ( lastDot >= 0 ) |
| { |
| return filename.substring( lastDot + 1 ); |
| } |
| else |
| { |
| return ""; |
| } |
| } |
| |
| /** |
| * Check if a file exits. |
| * |
| * @param fileName The name of the file to check. |
| * @return true if file exists. |
| */ |
| public static boolean fileExists( String fileName ) |
| { |
| File file = new File( fileName ); |
| return file.exists(); |
| } |
| |
| public static String fileRead( String file ) |
| throws IOException |
| { |
| return fileRead( new File( file ) ); |
| } |
| |
| public static String fileRead( File file ) |
| throws IOException |
| { |
| StringBuffer buf = new StringBuffer(); |
| |
| FileInputStream in = null; |
| |
| try |
| { |
| in = new FileInputStream( file ); |
| int count; |
| byte[] b = new byte[512]; |
| while ( ( count = in.read( b ) ) > 0 ) // blocking read |
| { |
| buf.append( new String( b, 0, count ) ); |
| } |
| } |
| finally |
| { |
| IOUtil.close( in ); |
| } |
| |
| return buf.toString(); |
| } |
| |
| /** |
| * Appends data to a file. The file will be created if it does not exist. |
| * |
| * @param fileName The name of the file to write. |
| * @param data The content to write to the file. |
| */ |
| public static void fileAppend( String fileName, String data ) |
| throws IOException |
| { |
| FileOutputStream out = null; |
| try |
| { |
| out = new FileOutputStream( fileName, true ); |
| out.write( data.getBytes() ); |
| } |
| finally |
| { |
| IOUtil.close( out ); |
| } |
| } |
| |
| /** |
| * Writes data to a file. The file will be created if it does not exist. |
| * |
| * @param fileName The name of the file to write. |
| * @param data The content to write to the file. |
| */ |
| public static void fileWrite( String fileName, String data ) |
| throws IOException |
| { |
| FileOutputStream out = null; |
| try |
| { |
| out = new FileOutputStream( fileName ); |
| out.write( data.getBytes() ); |
| } |
| finally |
| { |
| IOUtil.close( out ); |
| } |
| } |
| |
| /** |
| * Deletes a file. |
| * |
| * @param fileName The name 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 name 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 ); |
| } |
| |
| 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 ) |
| { |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Creates a file handle. |
| * |
| * @param fileName The name 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" |
| */ |
| public static String[] getFilesFromExtension( String directory, String[] extensions ) |
| { |
| |
| Vector files = new Vector(); |
| |
| java.io.File currentDir = new java.io.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]; |
| java.io.File currentFile = new java.io.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 hepler 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 |
| * ("") 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 |
| */ |
| public static void mkdir( String dir ) |
| { |
| File file = new File( dir ); |
| 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 |
| */ |
| 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.getProtocol().equals( "file" ) == false ) |
| { |
| return null; |
| } |
| else |
| { |
| final String filename = url.getFile().replace( '/', File.separatorChar ); |
| 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 filename |
| * @return the filename minus extension |
| */ |
| public static String removeExtension( final String filename ) |
| { |
| final int index = filename.lastIndexOf( '.' ); |
| |
| if ( -1 == index ) |
| { |
| return filename; |
| } |
| else |
| { |
| 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 filename |
| * @return the extension of filename or "" if none |
| */ |
| public static String getExtension( final String filename ) |
| { |
| final int index = filename.lastIndexOf( '.' ); |
| |
| if ( -1 == index ) |
| { |
| return ""; |
| } |
| else |
| { |
| return filename.substring( index + 1 ); |
| } |
| } |
| |
| /** |
| * 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 filepath |
| * @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 filepath |
| * @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; |
| } |
| else |
| { |
| 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 |
| * @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 ""; |
| } |
| else |
| { |
| 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 ); |
| } |
| |
| //does destinations 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 ); |
| } |
| |
| FileInputStream input = null; |
| FileOutputStream output = null; |
| try |
| { |
| input = new FileInputStream( source ); |
| output = new FileOutputStream( destination ); |
| IOUtil.copy( input, output ); |
| } |
| finally |
| { |
| IOUtil.close( input ); |
| IOUtil.close( output ); |
| } |
| |
| 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). |
| * @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 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 |
| { |
| //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.openStream(); |
| 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... |
| * |
| * @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( "windows" ) && filenm.indexOf( ":" ) > 0 ) ) |
| { |
| File file = new File( filenm ); |
| |
| try |
| { |
| file = file.getCanonicalFile(); |
| } |
| catch ( final IOException ioe ) |
| { |
| } |
| |
| 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 ) |
| { |
| } |
| |
| return file; |
| } |
| |
| /** |
| * Delete a file. If file is directory delete it and all sub-directories. |
| */ |
| 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. |
| */ |
| public static void forceDelete( final File file ) |
| throws IOException |
| { |
| if ( !file.exists() ) |
| { |
| return; |
| } |
| |
| if ( file.isDirectory() ) |
| { |
| deleteDirectory( file ); |
| } |
| else |
| { |
| if ( !deleteFile( file ) ) |
| { |
| 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. |
| */ |
| private static boolean deleteFile( File file ) |
| throws IOException |
| { |
| if ( file.isDirectory() ) |
| { |
| throw new IOException( "File " + file + " isn't a file." ); |
| } |
| |
| if ( !file.delete() ) |
| { |
| if ( System.getProperty( "os.name" ).toLowerCase().indexOf( "windows" ) > -1 ) |
| { |
| 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. |
| */ |
| 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. |
| */ |
| 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 |
| { |
| 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. |
| */ |
| public static void forceMkdir( final File file ) |
| throws IOException |
| { |
| 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. |
| */ |
| public static void deleteDirectory( final String directory ) |
| throws IOException |
| { |
| deleteDirectory( new File( directory ) ); |
| } |
| |
| /** |
| * Recursively delete a directory. |
| */ |
| 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. |
| */ |
| public static void cleanDirectory( final String directory ) |
| throws IOException |
| { |
| cleanDirectory( new File( directory ) ); |
| } |
| |
| /** |
| * Clean a directory without deleting it. |
| */ |
| 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(); |
| 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. |
| * |
| * @return size of directory in bytes. |
| */ |
| public static long sizeOfDirectory( final String directory ) |
| { |
| return sizeOfDirectory( new File( directory ) ); |
| } |
| |
| /** |
| * Recursively count size of 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 |
| */ |
| 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 |
| */ |
| 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; |
| } |
| |
| public static void copyDirectory( File sourceDirectory, File destinationDirectory ) |
| throws IOException |
| { |
| copyDirectory( sourceDirectory, destinationDirectory, "**", null ); |
| } |
| |
| 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 structure. |
| * <p/> |
| * Note: |
| * <ul> |
| * <li>It will include empty directories. |
| * <li>The <code>sourceDirectory</code> must exists. |
| * </ul> |
| * |
| * @param sourceDirectory |
| * @param destinationDirectory |
| * @throws IOException |
| */ |
| 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 |
| * @param destinationDirectory |
| * @throws IOException |
| */ |
| 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 File.createTempFile 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> |
| * |
| * @param prefix prefix before the random number |
| * @param suffix file extension; include the '.' |
| * @param parentDir Directory to create the temporary file in - |
| * java.io.tmpdir 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( "#####" ); |
| Random rand = new Random( System.currentTimeMillis() + Runtime.getRuntime().freeMemory() ); |
| synchronized ( rand ) |
| { |
| do |
| { |
| result = new File( parent, prefix + fmt.format( Math.abs( rand.nextInt() ) ) + suffix ); |
| } |
| while ( result.exists() ); |
| } |
| return result; |
| } |
| |
| public static void copyFile( File from, File to, String encoding, FilterWrapper[] wrappers ) |
| 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() ) |
| { |
| copyFile( from, to ); |
| } |
| } |
| } |
| |
| public static abstract class FilterWrapper |
| { |
| public abstract Reader getReader( Reader fileReader ); |
| } |
| |
| 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; |
| } |
| } |
