Ant Write Our Own Task
/*
* Uses org.apache.tools.ant.Main,
* which is Copyright 2000-2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.mwrm.ant.tasks;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.Main;
/**
* <p>The <code>ProjectHelpTask</code> class displays usage information
* for the current project. This is the same information as is displayed
* by <code>-projecthelp</code>.</p>
*
*/
public class ProjectHelpTask extends Task {
/** The location of the build file to use
* when obtaining usage information. */
private String buildfile;
/**
* <p>Runs the task.
* It calls {@link org.apache.tools.ant.Main#main(String[] args)
* org.apache.tools.ant.Main.main()} with the <code>-projecthelp</code>
* parameter. It will also send the current build file's file name
* via the <code>-f</code> parameter.</p>
*
* <p>The <code>buildfile</code> attribute is optional.
* The default is the task's build file.</p>
* @see org.apache.tools.ant.Main org.apache.tools.ant.Main
*/
public final void execute() {
// If the buildfile attribute is null, we'll use the task's build file
if (buildfile == null) {
buildfile = getLocation().getFileName();
}
// The arguments that we will pass to the Main class.
// The buildfile attribute must follow the -f parameter.
String[] args = {"-projecthelp", "-f", buildfile};
// Call the Main Ant class with the arguments.
Main.main(args);
}
/**
* Setter method for the <code>buildfile</code> attribute.
* @param file The file name of the build file to use.
*
*/
public final void setBuildfile(final String file) {
this.buildfile = file;
}
}
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