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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) 2001-2002 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 "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.taskdefs.condition.Condition;
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import org.apache.tools.ant.taskdefs.condition.ConditionBase;
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/**
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* Task to set a property conditionally using <uptodate>, <available>,
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* and many other supported conditions.
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*
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* <p>This task supports boolean logic as well as pluggable conditions
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* to decide, whether a property should be set.</p>
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*
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* <p>This task does not extend Task to take advantage of
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* ConditionBase.</p>
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*
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* @author Stefan Bodewig
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* @version $Revision: 1.14 $
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*
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* @since Ant 1.4
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*
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* @ant.task category="control"
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*/
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public class ConditionTask extends ConditionBase {
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private String property = null;
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private String value = "true";
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/**
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* The name of the property to set. Required.
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*
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* @since Ant 1.4
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*/
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public void setProperty(String p) {property = p;}
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/**
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* The value for the property to set, if condition evaluates to true.
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* Defaults to "true".
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*
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* @since Ant 1.4
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*/
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public void setValue(String v) {value = v;}
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/**
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* See whether our nested condition holds and set the property.
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*
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* @since Ant 1.4
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*/
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public void execute() throws BuildException {
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if (countConditions() > 1) {
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0
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throw new BuildException("You must not nest more than one "
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+ "condition into <condition>");
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}
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if (countConditions() < 1) {
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throw new BuildException("You must nest a condition into "
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+ "<condition>");
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}
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if (property == null) {
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throw new BuildException("The property attribute is required.");
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}
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Condition c = (Condition) getConditions().nextElement();
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if (c.eval()) {
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log("Condition true; setting "+property+" to "+value,
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Project.MSG_DEBUG);
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getProject().setNewProperty(property, value);
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} else {
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log("Condition false; not setting "+property,
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Project.MSG_DEBUG);
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}
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}
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}
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