0N/A/*
943N/A * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
553N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
553N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
553N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
553N/A * or visit www.oracle.com if you need additional information or have any
553N/A * questions.
0N/A */
0N/A
0N/Apackage com.sun.tools.javac.util;
0N/A
135N/Aimport com.sun.tools.javac.api.Messages;
135N/Aimport java.lang.ref.SoftReference;
0N/Aimport java.util.ResourceBundle;
0N/Aimport java.util.MissingResourceException;
0N/Aimport java.text.MessageFormat;
135N/Aimport java.util.HashMap;
135N/Aimport java.util.Locale;
135N/Aimport java.util.Map;
0N/A
0N/A/**
135N/A * Support for formatted localized messages.
0N/A *
580N/A * <p><b>This is NOT part of any supported API.
580N/A * If you write code that depends on this, you do so at your own risk.
0N/A * This code and its internal interfaces are subject to change or
0N/A * deletion without notice.</b>
0N/A */
135N/Apublic class JavacMessages implements Messages {
135N/A /** The context key for the JavacMessages object. */
943N/A public static final Context.Key<JavacMessages> messagesKey =
135N/A new Context.Key<JavacMessages>();
0N/A
135N/A /** Get the JavacMessages instance for this context. */
135N/A public static JavacMessages instance(Context context) {
135N/A JavacMessages instance = context.get(messagesKey);
0N/A if (instance == null)
135N/A instance = new JavacMessages(context);
0N/A return instance;
0N/A }
0N/A
135N/A private Map<Locale, SoftReference<List<ResourceBundle>>> bundleCache;
135N/A
135N/A private List<String> bundleNames;
0N/A
135N/A private Locale currentLocale;
135N/A private List<ResourceBundle> currentBundles;
135N/A
135N/A public Locale getCurrentLocale() {
135N/A return currentLocale;
0N/A }
0N/A
135N/A public void setCurrentLocale(Locale locale) {
135N/A if (locale == null) {
135N/A locale = Locale.getDefault();
135N/A }
135N/A this.currentBundles = getBundles(locale);
135N/A this.currentLocale = locale;
135N/A }
135N/A
135N/A /** Creates a JavacMessages object.
0N/A */
135N/A public JavacMessages(Context context) {
943N/A this(defaultBundleName, context.get(Locale.class));
135N/A context.put(messagesKey, this);
0N/A }
0N/A
135N/A /** Creates a JavacMessages object.
135N/A * @param bundleName the name to identify the resource buundle of localized messages.
0N/A */
135N/A public JavacMessages(String bundleName) throws MissingResourceException {
943N/A this(bundleName, null);
943N/A }
943N/A
943N/A /** Creates a JavacMessages object.
943N/A * @param bundleName the name to identify the resource buundle of localized messages.
943N/A */
943N/A public JavacMessages(String bundleName, Locale locale) throws MissingResourceException {
135N/A bundleNames = List.nil();
135N/A bundleCache = new HashMap<Locale, SoftReference<List<ResourceBundle>>>();
135N/A add(bundleName);
943N/A setCurrentLocale(locale);
135N/A }
135N/A
135N/A public JavacMessages() throws MissingResourceException {
135N/A this(defaultBundleName);
0N/A }
0N/A
0N/A public void add(String bundleName) throws MissingResourceException {
135N/A bundleNames = bundleNames.prepend(bundleName);
135N/A if (!bundleCache.isEmpty())
135N/A bundleCache.clear();
140N/A currentBundles = null;
0N/A }
0N/A
135N/A public List<ResourceBundle> getBundles(Locale locale) {
140N/A if (locale == currentLocale && currentBundles != null)
135N/A return currentBundles;
135N/A SoftReference<List<ResourceBundle>> bundles = bundleCache.get(locale);
135N/A List<ResourceBundle> bundleList = bundles == null ? null : bundles.get();
135N/A if (bundleList == null) {
135N/A bundleList = List.nil();
135N/A for (String bundleName : bundleNames) {
135N/A try {
135N/A ResourceBundle rb = ResourceBundle.getBundle(bundleName, locale);
135N/A bundleList = bundleList.prepend(rb);
135N/A } catch (MissingResourceException e) {
135N/A throw new InternalError("Cannot find javac resource bundle for locale " + locale);
135N/A }
135N/A }
135N/A bundleCache.put(locale, new SoftReference<List<ResourceBundle>>(bundleList));
135N/A }
135N/A return bundleList;
0N/A }
0N/A
0N/A /** Gets the localized string corresponding to a key, formatted with a set of args.
0N/A */
0N/A public String getLocalizedString(String key, Object... args) {
135N/A return getLocalizedString(currentLocale, key, args);
0N/A }
0N/A
135N/A public String getLocalizedString(Locale l, String key, Object... args) {
135N/A if (l == null)
135N/A l = getCurrentLocale();
135N/A return getLocalizedString(getBundles(l), key, args);
135N/A }
0N/A
0N/A /* Static access:
0N/A * javac has a firmly entrenched notion of a default message bundle
0N/A * which it can access from any static context. This is used to get
0N/A * easy access to simple localized strings.
0N/A */
0N/A
0N/A private static final String defaultBundleName =
0N/A "com.sun.tools.javac.resources.compiler";
0N/A private static ResourceBundle defaultBundle;
135N/A private static JavacMessages defaultMessages;
0N/A
0N/A
0N/A /**
0N/A * Gets a localized string from the compiler's default bundle.
0N/A */
0N/A // used to support legacy Log.getLocalizedString
0N/A static String getDefaultLocalizedString(String key, Object... args) {
0N/A return getLocalizedString(List.of(getDefaultBundle()), key, args);
0N/A }
0N/A
0N/A // used to support legacy static Diagnostic.fragment
135N/A @Deprecated
135N/A static JavacMessages getDefaultMessages() {
0N/A if (defaultMessages == null)
135N/A defaultMessages = new JavacMessages(defaultBundleName);
0N/A return defaultMessages;
0N/A }
0N/A
0N/A public static ResourceBundle getDefaultBundle() {
0N/A try {
0N/A if (defaultBundle == null)
0N/A defaultBundle = ResourceBundle.getBundle(defaultBundleName);
0N/A return defaultBundle;
0N/A }
0N/A catch (MissingResourceException e) {
0N/A throw new Error("Fatal: Resource for compiler is missing", e);
0N/A }
0N/A }
0N/A
0N/A private static String getLocalizedString(List<ResourceBundle> bundles,
0N/A String key,
0N/A Object... args) {
0N/A String msg = null;
0N/A for (List<ResourceBundle> l = bundles; l.nonEmpty() && msg == null; l = l.tail) {
0N/A ResourceBundle rb = l.head;
0N/A try {
0N/A msg = rb.getString(key);
0N/A }
0N/A catch (MissingResourceException e) {
0N/A // ignore, try other bundles in list
0N/A }
0N/A }
0N/A if (msg == null) {
0N/A msg = "compiler message file broken: key=" + key +
0N/A " arguments={0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}";
0N/A }
0N/A return MessageFormat.format(msg, args);
0N/A }
0N/A}