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Glassfish example source code file (ManifestUtils.java)

This example Glassfish source code file (ManifestUtils.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Glassfish tags/keywords

attributes, eol, eol, eol_token, eol_token, hashmap, io, jar, main_atts, manifestutils, map, map, net, network, set, string, string, util

The Glassfish ManifestUtils.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2008-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * 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
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * 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.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't 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.
 */

package com.sun.enterprise.universal.collections;

import java.util.*;
import java.util.jar.*;
import java.net.URLDecoder;
import java.io.UnsupportedEncodingException;

/**
 * all-static methods for handling operations with Manifests
 * It automatically replace all occurences of EOL_TOKEN with linefeeds
 * @author bnevins
 */
public class ManifestUtils {
    /**
     * Embed this token to encode linefeeds in Strings that are placed 
     * in Manifest objects
     */
    public static final String EOL_TOKEN = "%%%EOL%%%";
    /**
     * The name of the Manifest's main attributes.
     */
    public static final String MAIN_ATTS = "main";

    /**
     * The line separator character on this OS
     */
    public static final String EOL = System.getProperty("line.separator");

    /**
     * Convert a Manifest into an easier data structure.  It returns a Map of Maps.
     * The main attributes become the map where the key is MAIN_ATTS.
     * Entries become named maps as in the Manifest
     * @param m
     * @return
     */
    public final static Map<String, Map normalize(Manifest m)
    {
        // first add the "main attributes
        Map<String, Map all = new HashMap>();
        Attributes mainAtt = m.getMainAttributes();
        all.put(MAIN_ATTS, normalize(mainAtt));

        // now add all the "sub-attributes"
        Map<String,Attributes> unwashed = m.getEntries();
        Set<String> entryNames = unwashed.keySet();
        
        for(String entryName : entryNames) {
            all.put(entryName, normalize(unwashed.get(entryName)));
        }
        
        return all;
    }

    /**
     * Convert an Aattributes object into a Map
     * @param att
     * @return
     */
    public final static Map<String,String> normalize(Attributes att)
    {
        Set<Map.Entry entries = att.entrySet();
        Map<String,String> pristine = new HashMap(entries.size());
        
        for(Map.Entry<Object,Object> entry : entries) {
            String key = entry.getKey().toString();
            String value = decode(entry.getValue().toString());
            if(key == null) // impossible!
                continue;
            pristine.put(key, value);
        }
        
        return pristine;
    }
    
    public final static String encode(String s) {
        // do DOS linefeed first!
        s = s.replaceAll("\r\n", EOL_TOKEN);
        
        return s.replaceAll("\n", EOL_TOKEN);
    }

    public static Map<String,String> getMain(Map> exManifest) {
        Map<String,String> map = exManifest.get(MAIN_ATTS);

        // Never return null
        // do NOT return Collections.emptyMap because then we'll get an error when
        // they try to add to it!
        if(map == null)
            map = new HashMap<String,String>(0);

        return map;
    }
    
    public static String decode(String s) {
        // replace "null" with null
        if(s == null || s.equals("null"))
            return null;
        
        // replace special tokens with eol
        return s.replaceAll(EOL_TOKEN, EOL);
    }
    private ManifestUtils() {
    }
    
}

Other Glassfish examples (source code examples)

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