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 * Copyright 2010 Oracle and/or its affiliates. All rights reserved.
 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
 * Other names may be trademarks of their respective owners.
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
 * specific language governing permissions and limitations under the
 * License.  When distributing the software, include this License Header
 * Notice in each file and include the License file at
 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
 * your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL
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 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
 * made subject to such option by the copyright holder.
 * Contributor(s):
 * Portions Copyrighted 2009 Sun Microsystems, Inc.

package org.netbeans.nbbuild;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.jar.Manifest;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;

 * Task which parses given manifest file, searches for given attribute
 * and stores it in property.
 * @author Richard Michalsky
00058 public class ParseManifest extends Task {

     * Path to manifest.
00063     private File manifest;
    public void setManifest(File manifest) {
        this.manifest = manifest;
     * Task sets attribute name to given property.
     * If attribute is not found, property remains unset.
00071     private String property;
    public void setProperty(String property) {
        this.property = property;

    private String attribute;
     * Name of attribute to be read from given manifest.
     * @param attribute
00081     public void setAttribute(String attribute) {
        this.attribute = attribute;

    public void execute() throws BuildException {
        if (manifest == null) {
            throw new BuildException("Must specify parameter 'manifest'.");
        if (property == null) {
            throw new BuildException("Must specify parameter 'property'.");
        if (attribute == null) {
            throw new BuildException("Must specify parameter 'attribute'.");
        try {
            Manifest mf = new Manifest(new BufferedInputStream(new FileInputStream(manifest)));
            String attr = mf.getMainAttributes().getValue(attribute);
            if (attr == null)
            getProject().setProperty(property, attr);
        } catch (Exception x) {
            throw new BuildException("Reading manifest " + manifest + ": " + x, x, getLocation());


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