+++ /dev/null
-package org.apache.lucene.messages;
-
-/**
- * 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.
- */
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Modifier;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.text.MessageFormat;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Locale;
-import java.util.Map;
-import java.util.MissingResourceException;
-import java.util.ResourceBundle;
-
-/**
- * MessageBundles classes extend this class, to implement a bundle.
- *
- * For Native Language Support (NLS), system of software internationalization.
- *
- * This interface is similar to the NLS class in eclipse.osgi.util.NLS class -
- * initializeMessages() method resets the values of all static strings, should
- * only be called by classes that extend from NLS (see TestMessages.java for
- * reference) - performs validation of all message in a bundle, at class load
- * time - performs per message validation at runtime - see NLSTest.java for
- * usage reference
- *
- * MessageBundle classes may subclass this type.
- */
-public class NLS {
-
- private static Map<String, Class<? extends NLS>> bundles =
- new HashMap<String, Class<? extends NLS>>(0);
-
- protected NLS() {
- // Do not instantiate
- }
-
- public static String getLocalizedMessage(String key) {
- return getLocalizedMessage(key, Locale.getDefault());
- }
-
- public static String getLocalizedMessage(String key, Locale locale) {
- Object message = getResourceBundleObject(key, locale);
- if (message == null) {
- return "Message with key:" + key + " and locale: " + locale
- + " not found.";
- }
- return message.toString();
- }
-
- public static String getLocalizedMessage(String key, Locale locale,
- Object... args) {
- String str = getLocalizedMessage(key, locale);
-
- if (args.length > 0) {
- str = MessageFormat.format(str, args);
- }
-
- return str;
- }
-
- public static String getLocalizedMessage(String key, Object... args) {
- return getLocalizedMessage(key, Locale.getDefault(), args);
- }
-
- /**
- * Initialize a given class with the message bundle Keys Should be called from
- * a class that extends NLS in a static block at class load time.
- *
- * @param bundleName
- * Property file with that contains the message bundle
- * @param clazz
- * where constants will reside
- */
- protected static void initializeMessages(String bundleName, Class<? extends NLS> clazz) {
- try {
- load(clazz);
- if (!bundles.containsKey(bundleName))
- bundles.put(bundleName, clazz);
- } catch (Throwable e) {
- // ignore all errors and exceptions
- // because this function is supposed to be called at class load time.
- }
- }
-
- private static Object getResourceBundleObject(String messageKey, Locale locale) {
-
- // slow resource checking
- // need to loop thru all registered resource bundles
- for (Iterator<String> it = bundles.keySet().iterator(); it.hasNext();) {
- Class<? extends NLS> clazz = bundles.get(it.next());
- ResourceBundle resourceBundle = ResourceBundle.getBundle(clazz.getName(),
- locale);
- if (resourceBundle != null) {
- try {
- Object obj = resourceBundle.getObject(messageKey);
- if (obj != null)
- return obj;
- } catch (MissingResourceException e) {
- // just continue it might be on the next resource bundle
- }
- }
- }
- // if resource is not found
- return null;
- }
-
- /**
- * @param clazz
- */
- private static void load(Class<? extends NLS> clazz) {
- final Field[] fieldArray = clazz.getDeclaredFields();
-
- boolean isFieldAccessible = (clazz.getModifiers() & Modifier.PUBLIC) != 0;
-
- // build a map of field names to Field objects
- final int len = fieldArray.length;
- Map<String, Field> fields = new HashMap<String, Field>(len * 2);
- for (int i = 0; i < len; i++) {
- fields.put(fieldArray[i].getName(), fieldArray[i]);
- loadfieldValue(fieldArray[i], isFieldAccessible, clazz);
- }
- }
-
- /**
- * @param field
- * @param isFieldAccessible
- */
- private static void loadfieldValue(Field field, boolean isFieldAccessible,
- Class<? extends NLS> clazz) {
- int MOD_EXPECTED = Modifier.PUBLIC | Modifier.STATIC;
- int MOD_MASK = MOD_EXPECTED | Modifier.FINAL;
- if ((field.getModifiers() & MOD_MASK) != MOD_EXPECTED)
- return;
-
- // Set a value for this empty field.
- if (!isFieldAccessible)
- makeAccessible(field);
- try {
- field.set(null, field.getName());
- validateMessage(field.getName(), clazz);
- } catch (IllegalArgumentException e) {
- // should not happen
- } catch (IllegalAccessException e) {
- // should not happen
- }
- }
-
- /**
- * @param key
- * - Message Key
- */
- private static void validateMessage(String key, Class<? extends NLS> clazz) {
- // Test if the message is present in the resource bundle
- try {
- ResourceBundle resourceBundle = ResourceBundle.getBundle(clazz.getName(),
- Locale.getDefault());
- if (resourceBundle != null) {
- Object obj = resourceBundle.getObject(key);
- if (obj == null)
- System.err.println("WARN: Message with key:" + key + " and locale: "
- + Locale.getDefault() + " not found.");
- }
- } catch (MissingResourceException e) {
- System.err.println("WARN: Message with key:" + key + " and locale: "
- + Locale.getDefault() + " not found.");
- } catch (Throwable e) {
- // ignore all other errors and exceptions
- // since this code is just a test to see if the message is present on the
- // system
- }
- }
-
- /*
- * Make a class field accessible
- */
- private static void makeAccessible(final Field field) {
- if (System.getSecurityManager() == null) {
- field.setAccessible(true);
- } else {
- AccessController.doPrivileged(new PrivilegedAction<Void>() {
- public Void run() {
- field.setAccessible(true);
- return null;
- }
- });
- }
- }
-}
fnp / pylucene.git / blobdiff