| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2002 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", "Ant", 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.*; |
| import org.apache.tools.ant.PropertyHelper; |
| import org.apache.tools.ant.types.*; |
| import java.io.*; |
| import java.util.*; |
| |
| import org.apache.velocity.app.VelocityEngine; |
| import org.apache.velocity.VelocityContext; |
| import org.apache.velocity.Template; |
| |
| /** |
| * Enable Velocity dynamic properties |
| * |
| * |
| */ |
| public class VelocityProperties extends Task { |
| public static final String PREFIX="vm:"; |
| VelocityPropertyHelper helper=new VelocityPropertyHelper(); |
| |
| public VelocityProperties() { |
| } |
| |
| static class VelocityPropertyHelper extends PropertyHelper { |
| VelocityEngine engine; |
| VelocityContext context; |
| |
| public Object getPropertyHook( String ns, String name, boolean user ) { |
| if( ! name.startsWith(PREFIX) ) { |
| // pass on to next |
| return super.getPropertyHook(ns, name, user); |
| } |
| try { |
| name=name.substring( PREFIX.length() ); |
| StringWriter sw=new StringWriter(); |
| |
| engine.evaluate( context, sw, "antVM", name ); |
| |
| System.out.println("VM: getProperty " + ns + " " + name + "=" + sw.toString()); |
| return sw.toString(); |
| } catch( Exception ex ) { |
| ex.printStackTrace(); |
| return null; |
| } |
| } |
| } |
| |
| public VelocityEngine getVelocityEngine() { |
| return helper.engine; |
| } |
| |
| public void execute() { |
| try { |
| // Prepare the engine |
| helper.engine=new VelocityEngine(); |
| helper.engine.init(); |
| |
| helper.context=new VelocityContext(); |
| helper.context.put( "ant", project ); |
| |
| // Register it |
| PropertyHelper phelper=PropertyHelper.getPropertyHelper( project ); |
| helper.setNext( phelper.getNext() ); |
| helper.setProject( project ); |
| phelper.setNext( helper ); |
| |
| } catch( Exception ex ) { |
| ex.printStackTrace(); |
| } |
| |
| } |
| } |