Add an XSLT (style) task. Based on code from Assaf Arkin.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267690 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -37,6 +37,10 @@
   <target name="check_for_optional_packages">
     <available property="bsf.present" classname="com.ibm.bsf.BSFManager" />
     <available property="netrexx.present" classname="netrexx.lang.Rexx" />
+    <available property="xslp.present" 
+               classname="com.kvisco.xsl.XSLProcessor" />
+    <available property="xalan.present" 
+               classname="org.apache.xalan.xslt.XSLTProcessorFactory" />
   </target>
 
   <!-- =================================================================== -->
@@ -60,6 +64,8 @@
            optimize="on" >
       <exclude name="**/Script.java" unless="bsf.present" />
       <exclude name="**/NetRexxC.java" unless="netrexx.present" />
+      <exclude name="**/XslpLiaison.java" unless="xslp.present" />
+      <exclude name="**/XalanLiaison.java" unless="xalan.present" />
     </javac>
  
     <copydir src="${src.dir}" dest="${build.classes}">

docs/index.html

@@ -493,6 +493,7 @@ If you do not want these default excludes applied, you may disable them with the
   <li><a href="#tar">Tar</a></li>
   <li><a href="#taskdef">Taskdef</a></li>
   <li><a href="#tstamp">Tstamp</a></li>
+  <li><a href="#style">Style</a></li>
   <li><a href="#untar">Untar</a></li>
   <li><a href="#zip">Zip</a></li>
 </ul>
@@ -2287,6 +2288,67 @@ initialization target.</p>
 <h3>Examples</h3>
 <pre>  &lt;tstamp/&gt;</pre>
 <hr>
+<h2><a name="style">Style</a></h2>
+<h3>Description</h3>
+<p>Process a set of documents via XSLT.</p>
+<p>This is useful for building views of XML based documentation,
+or in generating code.</p>
+<p>It is possible to refine the set of files that are being copied. This can be
+done with the <i>includes</i>, <i>excludes</i> and <i>defaultexcludes</i>
+attributes. With the <i>includes</i> attribute you specify the files you want to
+have included by using patterns. The <i>exclude</i> attribute is used to specify
+the files you want to have excluded. This is also done with patterns. And
+finally with the <i>defaultexcludes</i> attribute, you can specify whether you
+want to use default exclusions or not. See the section on <a
+href="#directorybasedtasks">directory based tasks</a>, on how the
+inclusion/exclusion of files works, and how to write patterns. The patterns are
+relative to the <i>basedir</i> directory.</p>
+<h3>Parameters</h3>
+<table border="1" cellpadding="2" cellspacing="0">
+  <tr>
+    <td valign="top"><b>Attribute</b></td>
+    <td valign="top"><b>Description</b></td>
+    <td align="center" valign="top"><b>Required</b></td>
+  </tr>
+  <tr>
+    <td valign="top">basedir</td>
+    <td valign="top">where to find the source xml file.</td>
+    <td align="center" valign="top">Yes</td>
+  </tr>
+  <tr>
+    <td valign="top">destdir</td>
+    <td valign="top">directory where to store the results.</td>
+    <td align="center" valign="top">Yes</td>
+  </tr>
+  <tr>
+    <td valign="top">extention</td>
+    <td valign="top">desired file extension to be used for the targets.
+        If not specified, the default is "html".</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">style</td>
+    <td valign="top">name of the stylesheet to use.</td>
+    <td align="center" valign="top">Yes</td>
+  </tr>
+  <tr>
+    <td valign="top">processor</td>
+    <td valign="top">name of the XSLT processor to use.  Permissable
+values are "xslp" for the XSL:P processor, "xalan" for the Apache XML Xalan
+processor, or the name of an arbitrary XSLTLiaison class.
+Defaults to xslp or xalan (in that order), if one is found in your
+class path</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+</table>
+<h3>Examples</h3>
+<blockquote>
+  <p><pre>
+&lt;style basedir=&quot;doc&quot; destdir=&quot;build/doc&quot;
+       extension=&quot;html&quot; style=&quot;style/apache.xml&quot;/&gt;
+</pre></p>
+</blockquote>
+<hr>
 <h2><a name="untar">Untar</a></h2>
 <h3>Description</h3>
 <p>Untars a tarfile.</p>

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

@@ -0,0 +1,70 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 1999 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 org.apache.tools.ant.*;
+
+/**
+ *
+ * @author <a href="mailto:rubys@us.ibm.com">Sam Ruby</a>
+ * @version $Revision$ $Date$
+ */
+public interface XSLTLiaison {
+
+    public void setStylesheet(String fileName) throws Exception;
+
+    public void transform(String infile, String outfile) throws Exception;
+
+} //-- XSLTLiaison

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

@@ -0,0 +1,310 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 1999 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 org.apache.tools.ant.*;
+
+import java.io.*;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.StringTokenizer;
+import java.util.Vector;
+
+
+/**
+ * A Task to process via XSLT a set of XML documents. This is
+ * useful for building views of XML based documentation.
+ * arguments:
+ * <ul>
+ * <li>basedir
+ * <li>destdir
+ * <li>style
+ * <li>includes
+ * <li>excludes
+ * </ul>
+ * Of these arguments, the <b>sourcedir</b> and <b>destdir</b> are required.
+ * <p>
+ * This task will recursively scan the sourcedir and destdir
+ * looking for XML documents to process via XSLT. Any other files,
+ * such as images, or html files in the source directory will be
+ * copied into the destination directory.
+ *
+ * @author <a href="mailto:kvisco@exoffice.com">Keith Visco</a>
+ * @author <a href="mailto:rubys@us.ibm.com">Sam Ruby</a>
+ * @version $Revision$ $Date$
+ */
+public class XSLTProcess extends MatchingTask {
+
+    private File destDir = null;
+
+    private File baseDir = null;
+
+    private File xslFile = null;
+
+    private String targetExtension = "html";
+
+    private XSLTLiaison liaison;
+
+    /**
+     * Creates a new XSLTProcess Task.
+    **/
+    public XSLTProcess() {
+    } //-- XSLTProcess
+
+    /**
+     * Executes the task.
+     */
+
+    public void execute() throws BuildException {
+	DirectoryScanner scanner;
+	String[]         list;
+	String[]         dirs;
+
+	if (baseDir == null)
+	    baseDir = project.resolveFile(".");
+        //-- make sure Source directory exists...
+	if (destDir == null ) {
+	    String msg = "destdir attributes must be set!";
+	    throw new BuildException(msg);
+	}
+	scanner = getDirectoryScanner(baseDir);
+	project.log("Transforming into "+destDir,project.MSG_INFO);
+
+	try {
+	    // Create a new XSL processor with the specified stylesheet
+	    if (xslFile != null) {
+		project.log("Loading stylesheet " + xslFile, project.MSG_INFO);
+                liaison.setStylesheet( new File(baseDir,xslFile.toString()).toString() );
+	    }
+	} catch (Exception ex) {
+	    project.log("Failed to read stylesheet " + xslFile,project.MSG_INFO);
+            throw new BuildException(ex);
+	}
+
+	// Process all the files marked for styling
+	list = scanner.getIncludedFiles();
+	for (int i = 0;i < list.length; ++i) {
+	    process(baseDir,list[i],destDir);
+	}
+
+	// Process all the directoried marked for styling
+	dirs = scanner.getIncludedDirectories();
+	for (int j = 0;j < dirs.length;++j){
+	    list=new File(baseDir,dirs[j]).list();
+	    for (int i = 0;i < list.length;++i)
+		process(baseDir,list[i],destDir);
+	}
+    } //-- execute
+
+    /**
+     * Set the base directory.
+    **/
+    public void setBasedir(String dirName) {
+	    baseDir = project.resolveFile(dirName);
+    } //-- setSourceDir
+
+    /**
+     * Set the destination directory into which the XSL result
+     * files should be copied to
+     * @param dirName the name of the destination directory
+    **/
+    public void setDestdir(String dirName) {
+	    destDir = project.resolveFile(dirName);
+    } //-- setDestDir
+
+    /**
+     * Set the desired file extension to be used for the target
+     * @param name the extension to use
+    **/
+    public void setExtension(String name) {
+	    targetExtension = name;
+    } //-- setDestDir
+
+    /**
+     * Sets the file to use for styling relative to the base directory.
+     */
+    public void setStyle(String xslFile) {
+	this.xslFile = new File(xslFile);
+    }
+
+    /**
+     * Sets the file to use for styling relative to the base directory.
+     */
+    public void setProcessor(String processor) throws Exception {
+	if (processor.equals("xslp")) {
+            liaison = (XSLTLiaison) Class.forName("org.apache.tools.ant.taskdefs.optional.XslpLiaison").newInstance();
+	} if (processor.equals("xalan")) {
+            liaison = (XSLTLiaison) Class.forName("org.apache.tools.ant.taskdefs.optional.XalanLiaison").newInstance();
+        } else {
+            liaison = (XSLTLiaison) Class.forName(processor).newInstance();
+        }
+        
+    }
+
+    /*
+    private void process(File sourceDir, File destDir)
+        throws BuildException
+    {
+
+        
+        // if processor wasn't specified, default it to xslp or xalan,
+        // depending on which is in the classpath
+        if (liaison == null)
+           try {
+               setProcessor("xslp");
+           } catch (Exception e) {
+               try {
+                   setProcessor("xalan");
+               } catch (Exception e) {
+                   throw new BuildException(e);
+               }
+           }
+        }
+
+        if (!sourceDir.isDirectory()) {
+            throw new BuildException(sourceDir.getName() +
+                " is not a directory!");
+        }
+        else if (!destDir.isDirectory()) {
+            throw new BuildException(destDir.getName() +
+                " is not a directory!");
+        }
+
+	    String[] list = sourceDir.list(new DesirableFilter());
+
+	    if (list == null) {
+	        return;  //-- nothing to do
+	    }
+
+	    for (int i = 0; i < list.length; i++) {
+
+    	    String filename = list[i];
+
+    	    File inFile  = new File(sourceDir, filename);
+
+	        //-- if inFile is a directory, recursively process it
+    	    if (inFile.isDirectory()) {
+		if (!excluded(filename)) {
+		new File(destDir, filename).mkdir();
+		process(inFile, new File(destDir, filename));
+		}
+	    }
+	    //-- process XML files
+	    else if (hasXMLFileExtension(filename) && ! excluded(filename)) {
+
+	            //-- replace extension with the target extension
+	            int idx = filename.lastIndexOf('.');
+
+		        File outFile = new File(destDir,
+		            filename.substring(0,idx) + targetExt);
+
+		        if ((inFile.lastModified() > outFile.lastModified()) ||
+			    (xslFile != null && xslFile.lastModified() > outFile.lastModified()))
+		        {
+			    processXML(inFile, outFile);
+		        }
+		    }
+		    else {
+		        File outFile = new File(destDir, filename);
+		        if (inFile.lastModified() > outFile.lastModified()) {
+		            try {
+		                copyFile(inFile, outFile);
+		            }
+		            catch(java.io.IOException ex) {
+		                String err = "error copying file: ";
+		                err += inFile.getAbsolutePath();
+		                err += "; " + ex.getMessage();
+		                throw new BuildException(err, ex);
+		            }
+			        //filecopyList.put(srcFile.getAbsolutePath(),
+					    //destFile.getAbsolutePath());
+		        }
+		    }
+		} //-- </for>
+    } //-- process(File, File)
+    */
+
+    /**
+     * Processes the given input XML file and stores the result
+     * in the given resultFile.
+    **/
+    private void process(File baseDir,String xmlFile,File destDir)
+        throws BuildException
+    {
+	String fileExt=".html";
+	File   outFile=null;
+	File   inFile=null;
+
+	try {
+	    inFile = new File(baseDir,xmlFile);
+	    outFile = new File(destDir,xmlFile.substring(0,xmlFile.lastIndexOf('.'))+fileExt);
+	    if (inFile.lastModified() > outFile.lastModified()) {
+		//-- command line status
+		project.log("Processing " + xmlFile + " to " + outFile,project.MSG_VERBOSE);
+
+		liaison.transform(inFile.toString(), outFile.toString());
+	    }
+        }
+        catch (Exception ex) {
+	    // If failed to process document, must delete target document,
+	    // or it will not attempt to process it the second time
+	    project.log("Failed to process " + inFile,project.MSG_INFO);
+	    outFile.delete();
+            throw new BuildException(ex);
+        }
+
+    } //-- processXML
+
+} //-- XSLTProcess

src/main/org/apache/tools/ant/taskdefs/defaults.properties

@@ -31,6 +31,7 @@ fixcrlf=org.apache.tools.ant.taskdefs.FixCRLF
 rename=org.apache.tools.ant.taskdefs.Rename
 patch=org.apache.tools.ant.taskdefs.Patch
 compileTask=org.apache.tools.ant.taskdefs.CompileTask
+style=org.apache.tools.ant.taskdefs.XSLTProcess
 
 # optional tasks
 script=org.apache.tools.ant.taskdefs.optional.Script

src/main/org/apache/tools/ant/taskdefs/optional/XalanLiaison.java

@@ -0,0 +1,84 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 1999 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.optional;
+
+import org.apache.tools.ant.taskdefs.XSLTLiaison;
+
+import org.apache.xalan.xslt.XSLTProcessorFactory;
+import org.apache.xalan.xslt.XSLTProcessor;
+import org.apache.xalan.xslt.XSLTInputSource;
+import org.apache.xalan.xslt.XSLTResultTarget;
+
+/**
+ *
+ * @author <a href="mailto:rubys@us.ibm.com">Sam Ruby</a>
+ * @version $Revision$ $Date$
+ */
+public class XalanLiaison implements XSLTLiaison {
+
+    XSLTProcessor processor;
+    XSLTInputSource xslSheet;
+
+    public void setStylesheet(String fileName) throws Exception {
+      xslSheet = new XSLTInputSource (fileName);
+    };
+
+    public void transform(String infile, String outfile) throws Exception {
+      if (processor == null) processor = XSLTProcessorFactory.getProcessor();
+      processor.process(new XSLTInputSource(infile), xslSheet,
+                        new XSLTResultTarget(outfile));
+    }
+
+} //-- XalanLiaison

src/main/org/apache/tools/ant/taskdefs/optional/XslpLiaison.java

@@ -0,0 +1,85 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 1999 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.optional;
+
+import java.io.FileWriter;
+
+import org.apache.tools.ant.taskdefs.XSLTLiaison;
+
+import com.kvisco.xsl.XSLProcessor;
+import com.kvisco.xsl.XSLReader;
+import com.kvisco.xsl.XSLStylesheet;
+
+/**
+ *
+ * @author <a href="mailto:rubys@us.ibm.com">Sam Ruby</a>
+ * @version $Revision$ $Date$
+ */
+public class XslpLiaison implements XSLTLiaison {
+
+    XSLProcessor processor;
+    XSLStylesheet xslSheet;
+
+    public void setStylesheet(String fileName) throws Exception {
+      XSLReader xslReader = new XSLReader();
+      xslSheet = xslReader.read( fileName );
+    };
+
+    public void transform(String infile, String outfile) throws Exception {
+      if (processor == null) processor = new XSLProcessor();
+      processor.process(infile, xslSheet, new FileWriter(outfile));
+    }
+
+} //-- XSLPLiaison