Forgot the implementation of <transform> with my last commit.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268228 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -12,7 +12,7 @@ Other changes:
 
 * A GUI Frontend: Antidote
 
-* New tasks: propertyfile, depend, antlr, telnet, csc, ilasm
+* New tasks: propertyfile, depend, antlr, telnet, csc, ilasm, transform
 
 * Added output attribute to <java>.
 

src/main/org/apache/tools/ant/taskdefs/Transform.java

@@ -0,0 +1,246 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000 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", "Tomcat", 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/>.
+ */
+
+package org.apache.tools.ant.taskdefs;
+
+import java.io.File;
+import java.util.Hashtable;
+import java.util.Vector;
+
+import org.apache.tools.ant.*;
+import org.apache.tools.ant.types.*;
+import org.apache.tools.ant.util.*;
+
+/**
+ * Executes a given command, supplying a set of files as arguments. 
+ *
+ * <p>Only those files that are newer than their corresponding target
+ * files will be handeled, the rest will be ignored.</p>
+ *
+ * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> 
+ */
+public class Transform extends ExecuteOn {
+
+    protected Commandline.Marker targetFilePos = null;
+    protected Mapper mapperElement = null;
+    protected FileNameMapper mapper = null;
+    protected File destDir = null;
+
+    /**
+     * Has &lt;srcfile&gt; been specified before &lt;targetfile&gt;
+     */
+    protected boolean srcIsFirst = true;
+
+    /**
+     * Set the destination directory.
+     */
+    public void setDest(File destDir) {
+        this.destDir = destDir;
+    }
+
+    /**
+     * Marker that indicates where the name of the target file should
+     * be put on the command line.
+     */
+    public Commandline.Marker createTargetfile() {
+        if (targetFilePos != null) {
+            throw new BuildException(taskType + " doesn\'t support multiple targetfile elements.",
+                                     location);
+        }
+        targetFilePos = cmdl.createMarker();
+        srcIsFirst = (srcFilePos != null);
+        return targetFilePos;
+    }
+
+    /**
+     * Defines the FileNameMapper to use (nested mapper element).
+     */
+    public Mapper createMapper() throws BuildException {
+        if (mapperElement != null) {
+            throw new BuildException("Cannot define more than one mapper",
+                                     location);
+        }
+        mapperElement = new Mapper(project);
+        return mapperElement;
+    }
+
+    protected void checkConfiguration() {
+        super.checkConfiguration();
+        if (mapperElement == null) {
+            throw new BuildException("no mapper specified", location);
+        }
+        if (destDir == null) {
+            throw new BuildException("no dest attribute specified", location);
+        }
+
+        mapper = mapperElement.getImplementation();
+    }
+
+    /**
+     * Return the list of files from this DirectoryScanner that should
+     * be included on the command line - i.e. only those that are
+     * newer than the corresponding target files.
+     */
+    protected String[] getFiles(File baseDir, DirectoryScanner ds) {
+        SourceFileScanner sfs = new SourceFileScanner(this);
+        return sfs.restrict(ds.getIncludedFiles(), baseDir, destDir, mapper);
+    }
+
+    /**
+     * Return the list of Directories from this DirectoryScanner that
+     * should be included on the command line - i.e. only those that
+     * are newer than the corresponding target files.
+     */
+    protected String[] getDirs(File baseDir, DirectoryScanner ds) {
+        SourceFileScanner sfs = new SourceFileScanner(this);
+        return sfs.restrict(ds.getIncludedDirectories(), baseDir, destDir, 
+                            mapper);
+    }
+
+    /**
+     * Construct the command line for parallel execution.
+     *
+     * @param srcFiles The filenames to add to the commandline
+     * @param baseDir filenames are relative to this dir
+     */
+    protected String[] getCommandline(String[] srcFiles, File baseDir) {
+        if (targetFilePos == null) {
+            return super.getCommandline(srcFiles, baseDir);
+        }
+
+        Vector targets = new Vector();
+        Hashtable addedFiles = new Hashtable();
+        for (int i=0; i<srcFiles.length; i++) {
+            String[] subTargets = mapper.mapFileName(srcFiles[i]);
+            if (subTargets != null) {
+                for (int j=0; j<subTargets.length; j++) {
+                    String name = (new File(destDir, subTargets[j])).getAbsolutePath();
+                    if (!addedFiles.contains(name)) {
+                        targets.addElement(name);
+                        addedFiles.put(name, name);
+                    }
+                }
+            }
+        }
+        String[] targetFiles = new String[targets.size()];
+        targets.copyInto(targetFiles);
+        
+        String[] orig = cmdl.getCommandline();
+        String[] result = new String[orig.length+srcFiles.length+targetFiles.length];
+
+        int srcIndex = orig.length;
+        if (srcFilePos != null) {
+            srcIndex = srcFilePos.getPosition();
+        }
+        int targetIndex = targetFilePos.getPosition();
+
+        if (srcIndex < targetIndex || (srcIndex == targetIndex && srcIsFirst)) {
+            // 0 --> srcIndex
+            System.arraycopy(orig, 0, result, 0, srcIndex);
+
+            // srcIndex --> targetIndex
+            System.arraycopy(orig, srcIndex, result, 
+                             srcIndex + srcFiles.length,
+                             targetIndex - srcIndex);
+
+            // targets are already absolute file names
+            System.arraycopy(targetFiles, 0, result, 
+                             targetIndex + srcFiles.length, 
+                             targetFiles.length);
+
+            // targetIndex --> end
+            System.arraycopy(orig, targetIndex, result, 
+                             targetIndex + srcFiles.length + targetFiles.length,
+                             orig.length - targetIndex);
+        } else {
+            // 0 --> targetIndex
+            System.arraycopy(orig, 0, result, 0, targetIndex);
+
+            // targets are already absolute file names
+            System.arraycopy(targetFiles, 0, result, 
+                             targetIndex,
+                             targetFiles.length);
+
+            // targetIndex --> srcIndex
+            System.arraycopy(orig, targetIndex, result, 
+                             targetIndex + targetFiles.length,
+                             srcIndex - targetIndex);
+
+            // srcIndex --> end
+            System.arraycopy(orig, srcIndex, result, 
+                             srcIndex + srcFiles.length + targetFiles.length,
+                             orig.length - srcIndex);
+            srcIndex += targetFiles.length;
+        }
+
+
+        for (int i=0; i < srcFiles.length; i++) {
+            result[srcIndex+i] = 
+                (new File(baseDir, srcFiles[i])).getAbsolutePath();
+        }
+        return result;
+        
+    }
+
+    /**
+     * Construct the command line for serial execution.
+     *
+     * @param srcFile The filename to add to the commandline
+     * @param baseDir filename is relative to this dir
+     */
+    protected String[] getCommandline(String srcFile, File baseDir) {
+        return getCommandline(new String[] {srcFile}, baseDir);
+    }
+
+}