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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2002 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Ant", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.taskdefs; |
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import org.apache.tools.ant.BuildException; |
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import org.apache.tools.ant.Project; |
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import org.apache.tools.ant.Target; |
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import org.apache.tools.ant.Task; |
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import java.util.Enumeration; |
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import java.util.Hashtable; |
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/* |
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* This task is similar to the <antcall> task; however, <do> will not |
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* re-evaluate all the dependencies of the specified target. Using <antcall> |
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* to run several targets that all have the same dependency(s), for each |
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* called target, the dependent target(s) will be run again. This results |
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* in common targets, such as "init"-type targets, being run many times. |
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* Using <do> instead of <antcall> prevents any common dependencies from |
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* being run more than once. |
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* |
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* Note: The <do> task will still re-run any dependent target that was run |
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* prior to the <do> task(s) being run. |
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* |
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* Usage: |
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* |
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* <target name="all"> |
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* <do target="target1"/> |
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* <do target="target2"/> |
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* </target> |
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* |
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* |
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* @author Mark McMillan |
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* @author Diane Holt <a href="mailto:holtdl@apache.org">holtdl@apache.org</a> |
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* (Clean-up for submission.) |
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* |
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* @since 1.5 |
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* |
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* @ant.task category="control" |
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* |
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*/ |
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public class Do extends Task { |
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private String targetName; |
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private static Hashtable hasRunList = new Hashtable(); |
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public Do() { |
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} |
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public void setTarget(String targetName) { |
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this.targetName = targetName; |
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} |
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public void execute() throws BuildException { |
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// Get the target property |
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if (targetName == null) { |
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throw new BuildException("Missing 'target' attribute.", location); |
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} |
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// This will cause all dependencies to be re-evaluated: |
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// project.executeTarget(targetName); |
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// so we don't want it. |
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runTarget(targetName); |
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} |
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private void runTarget(String targetName) throws BuildException { |
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Target t = (Target)project.getTargets().get(targetName); |
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if (t == null) { |
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throw new BuildException("Target '" + targetName + "' not found.", |
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location); |
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} |
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// Run all dependencies that have not yet been run before running |
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// the requested target. |
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Enumeration enum = t.getDependencies(); |
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while (enum.hasMoreElements()) { |
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String depName = (String)enum.nextElement(); |
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// This target has never been run |
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if (hasRunList.get(depName) == null) { |
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// Recursive call to run the dependent target |
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runTarget(depName); |
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} |
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} |
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// Now run the requested target |
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log("Calling target '" + targetName + "'", Project.MSG_VERBOSE); |
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t.performTasks(); |
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// Add to list of targets that have been run |
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hasRunList.put(targetName, t); |
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} |
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} |
Diane Holt