Java Jar Usage allocateReadOnlyI18nDictionary(final Attributes attributes, final ResourceBundle resourceBundle)

Description

allocate Read Only In Dictionary

License

Apache License

Declaration

public static Dictionary allocateReadOnlyI18nDictionary(final Attributes attributes,
            final ResourceBundle resourceBundle) 

Method Source Code

//package com.java2s;
/**/*from   www  .j a v a  2s.  com*/
 *
 * Copyright 2008-2009 (C) The original author or authors
 *
 * 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.
 */

import java.util.Collections;
import java.util.Dictionary;
import java.util.Enumeration;

import java.util.HashSet;

import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.jar.Attributes;

public class Main {
    public static Dictionary allocateReadOnlyI18nDictionary(final Attributes attributes,
            final ResourceBundle resourceBundle) {
        return new Dictionary() {
            public int size() {
                return attributes.size();
            }

            public boolean isEmpty() {
                return attributes.isEmpty();
            }

            public Enumeration keys() {
                Set<String> set = new HashSet<String>();
                for (Object key : attributes.keySet())
                    set.add(key.toString());
                return Collections.enumeration(set);
            }

            public Enumeration elements() {
                return new Enumeration() {
                    final Enumeration enumeration = Collections.enumeration(attributes.values());

                    public boolean hasMoreElements() {
                        return enumeration.hasMoreElements();
                    }

                    public Object nextElement() {
                        return localize(enumeration.nextElement().toString());
                    }
                };
            }

            public Object get(Object key) {
                return localize(attributes.getValue((String) key));
            }

            protected Object localize(String result) {
                if (result != null && result.length() > 0 && result.charAt(0) == '%') {
                    result = result.substring(1);

                    if (resourceBundle != null)
                        try {
                            result = resourceBundle.getString(result);
                        } catch (MissingResourceException ignore) {
                        }
                }
                return result;
            }

            public Object put(Object key, Object value) {
                throw new UnsupportedOperationException("Read-only dictionary");
            }

            public Object remove(Object key) {
                throw new UnsupportedOperationException("Read-only dictionary");
            }
        };
    }
}

Related

1. _getPacker()
2. allocateReadOnlyDictionary(final Attributes attributes)
3. checkJarValidity(String path)
4. containsClass(JarFile jarFile, String agentRunnerClassName)
5. containsClass(JarFile jarFile, String classFilePath)
6. convertAttributes(Attributes attributes)