| /* |
| * $Header$ |
| * $Revision$ |
| * $Date$ |
| * |
| * ==================================================================== |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2002 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 acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Commons", and "Apache Software |
| * Foundation" 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" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * 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/>. |
| * |
| * $Id$ |
| */ |
| package org.codehaus.groovy.ant; |
| |
| import java.io.File; |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| import org.apache.tools.ant.DirectoryScanner; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.types.FileSet; |
| |
| /** |
| * <p><code>FileIterator</code> is an iterator over a |
| * over a number of files from a colleciton of FileSet instances. |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| * @version $Revision$ |
| */ |
| public class FileIterator implements Iterator { |
| |
| /** The iterator over the FileSet objects */ |
| private Iterator fileSetIterator; |
| |
| /** The Ant project */ |
| private Project project; |
| |
| /** The directory scanner */ |
| private DirectoryScanner ds; |
| |
| /** The file names in the current FileSet scan */ |
| private String[] files; |
| |
| /** The current index into the file name array */ |
| private int fileIndex = -1; |
| |
| /** The next File object we'll iterate over */ |
| private File nextFile; |
| |
| /** Have we set a next object? */ |
| private boolean nextObjectSet = false; |
| |
| /** Return only directories? */ |
| private boolean iterateDirectories = false; |
| |
| public FileIterator(Project project, |
| Iterator fileSetIterator) { |
| this( project, fileSetIterator, false); |
| } |
| |
| public FileIterator(Project project, |
| Iterator fileSetIterator, |
| boolean iterateDirectories) { |
| this.project = project; |
| this.fileSetIterator = fileSetIterator; |
| this.iterateDirectories = iterateDirectories; |
| } |
| |
| // Iterator interface |
| //------------------------------------------------------------------------- |
| |
| /** @return true if there is another object that matches the given predicate */ |
| public boolean hasNext() { |
| if ( nextObjectSet ) { |
| return true; |
| } |
| else { |
| return setNextObject(); |
| } |
| } |
| |
| /** @return the next object which matches the given predicate */ |
| public Object next() { |
| if ( !nextObjectSet ) { |
| if (!setNextObject()) { |
| throw new NoSuchElementException(); |
| } |
| } |
| nextObjectSet = false; |
| return nextFile; |
| } |
| |
| /** |
| * throws UnsupportedOperationException |
| */ |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| // Implementation methods |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Set nextObject to the next object. If there are no more |
| * objects then return false. Otherwise, return true. |
| */ |
| private boolean setNextObject() { |
| while (true) { |
| while (ds == null) { |
| if ( ! fileSetIterator.hasNext() ) { |
| return false; |
| } |
| FileSet fs = (FileSet) fileSetIterator.next(); |
| ds = fs.getDirectoryScanner(project); |
| ds.scan(); |
| if (iterateDirectories) { |
| files = ds.getIncludedDirectories(); |
| } |
| else { |
| files = ds.getIncludedFiles(); |
| } |
| if ( files.length > 0 ) { |
| fileIndex = -1; |
| break; |
| } |
| else { |
| ds = null; |
| } |
| } |
| |
| if ( ds != null && files != null ) { |
| if ( ++fileIndex < files.length ) { |
| nextFile = new File( ds.getBasedir(), files[fileIndex] ); |
| nextObjectSet = true; |
| return true; |
| } |
| else { |
| ds = null; |
| } |
| } |
| } |
| } |
| } |
| |
| |