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/*
* Copyright (c) 2001-2004 Ant-Contrib project. All rights reserved.
*
* 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 net.sf.antcontrib.logic;
import java.util.StringTokenizer;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Ant;
import org.apache.tools.ant.taskdefs.Property;
/**
* Subclass of Ant which allows us to fetch
* properties which are set in the scope of the called
* target, and set them in the scope of the calling target.
* Normally, these properties are thrown away as soon as the
* called target completes execution.
*
* @author inger
* @author Dale Anson, danson@germane-software.com
*/
public class AntCallBack extends Ant {
/** the name of the property to fetch from the new project */
private String returnName = null;
private ProjectDelegate fakeProject = null;
public void setProject(Project realProject) {
fakeProject = new ProjectDelegate(realProject);
super.setProject(fakeProject);
setAntfile(realProject.getProperty("ant.file"));
}
/**
* Do the execution.
*
* @exception BuildException Description of the Exception
*/
public void execute() throws BuildException {
super.execute();
// copy back the props if possible
if ( returnName != null ) {
StringTokenizer st = new StringTokenizer( returnName, "," );
while ( st.hasMoreTokens() ) {
String name = st.nextToken().trim();
String value = fakeProject.getSubproject().getUserProperty( name );
if ( value != null ) {
getProject().setUserProperty( name, value );
}
else {
value = fakeProject.getSubproject().getProperty( name );
if ( value != null ) {
getProject().setProperty( name, value );
}
}
}
}
}
/**
* Set the property or properties that are set in the new project to be
* transfered back to the original project. As with all properties, if the
* property already exists in the original project, it will not be overridden
* by a different value from the new project.
*
* @param r the name of a property in the new project to set in the original
* project. This may be a comma separate list of properties.
*/
public void setReturn( String r ) {
returnName = r;
}
public Property createParam() {
return super.createProperty();
}
}
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