| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 java.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * {@code PropertyResourceBundle} loads resources from an {@code InputStream}. All resources are |
| * Strings. The resources must be of the form {@code key=value}, one |
| * resource per line (see Properties). |
| * |
| * @see ResourceBundle |
| * @see Properties |
| * @since 1.1 |
| */ |
| public class PropertyResourceBundle extends ResourceBundle { |
| |
| Properties resources; |
| |
| /** |
| * Constructs a new instance of {@code PropertyResourceBundle} and loads the |
| * properties file from the specified {@code InputStream}. |
| * |
| * @param stream |
| * the {@code InputStream}. |
| * @throws IOException |
| * if an error occurs during a read operation on the |
| * {@code InputStream}. |
| */ |
| public PropertyResourceBundle(InputStream stream) throws IOException { |
| resources = new Properties(); |
| resources.load(stream); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private Enumeration<String> getLocalKeys() { |
| return (Enumeration<String>) resources.propertyNames(); |
| } |
| |
| /** |
| * Returns the names of the resources contained in this |
| * PropertyResourceBundle. |
| * |
| * @return an Enumeration of the resource names |
| */ |
| @Override |
| public Enumeration<String> getKeys() { |
| if (parent == null) { |
| return getLocalKeys(); |
| } |
| return new Enumeration<String>() { |
| Enumeration<String> local = getLocalKeys(); |
| |
| Enumeration<String> pEnum = parent.getKeys(); |
| |
| String nextElement; |
| |
| private boolean findNext() { |
| if (nextElement != null) { |
| return true; |
| } |
| while (pEnum.hasMoreElements()) { |
| String next = pEnum.nextElement(); |
| if (!resources.containsKey(next)) { |
| nextElement = next; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public boolean hasMoreElements() { |
| if (local.hasMoreElements()) { |
| return true; |
| } |
| return findNext(); |
| } |
| |
| public String nextElement() { |
| if (local.hasMoreElements()) { |
| return local.nextElement(); |
| } |
| if (findNext()) { |
| String result = nextElement; |
| nextElement = null; |
| return result; |
| } |
| // Cause an exception |
| return pEnum.nextElement(); |
| } |
| }; |
| } |
| |
| /** |
| * Returns the named resource from this PropertyResourceBundle, or null if |
| * the resource is not found. |
| * |
| * @param key |
| * the name of the resource |
| * @return the resource object |
| */ |
| @Override |
| public Object handleGetObject(String key) { |
| return resources.get(key); |
| } |
| } |