com.sun.istack.localization.Localizer Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.istack.localization;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/**
* Localizes the {@link Localizable} into a message
* by using a configured {@link Locale}.
*
* @author WS Development Team
*/
public class Localizer {
private final Locale _locale;
private final HashMap _resourceBundles;
public Localizer() {
this(Locale.getDefault());
}
public Localizer(Locale l) {
_locale = l;
_resourceBundles = new HashMap<>();
}
public Locale getLocale() {
return _locale;
}
public String localize(Localizable l) {
String key = l.getKey();
if (key == Localizable.NOT_LOCALIZABLE) {
// this message is not localizable
return (String) l.getArguments()[0];
}
String bundlename = l.getResourceBundleName();
try {
ResourceBundle bundle =
_resourceBundles.get(bundlename);
if (bundle == null) {
bundle = l.getResourceBundle(_locale);
if (bundle != null) {
_resourceBundles.put(bundlename, bundle);
}
}
if (bundle == null) {
try {
bundle = ResourceBundle.getBundle(bundlename, _locale);
} catch (MissingResourceException e) {
// work around a bug in the com.sun.enterprise.deployment.WebBundleArchivist:
// all files with an extension different from .class (hence all the .properties files)
// get copied to the top level directory instead of being in the package where they
// are defined
// so, since we can't find the bundle under its proper name, we look for it under
// the top-level package
int i = bundlename.lastIndexOf('.');
if (i != -1) {
String alternateBundleName =
bundlename.substring(i + 1);
try {
bundle =
ResourceBundle.getBundle(
alternateBundleName,
_locale);
} catch (MissingResourceException e2) {
//try context classloader
try {
bundle = ResourceBundle.getBundle(bundlename, _locale, Thread.currentThread().getContextClassLoader());
} catch (MissingResourceException e3) {
// give up
return getDefaultMessage(l);
}
}
}
}
_resourceBundles.put(bundlename, bundle);
}
if (bundle == null) {
return getDefaultMessage(l);
}
if (key == null)
key = "undefined";
String msg;
try {
msg = bundle.getString(key);
} catch (MissingResourceException e) {
// notice that this may throw a MissingResourceException of its own (caught below)
msg = bundle.getString("undefined");
}
// localize all arguments to the given localizable object
Object[] args = l.getArguments();
for (int i = 0; i < args.length; ++i) {
if (args[i] instanceof Localizable)
args[i] = localize((Localizable) args[i]);
}
String message = MessageFormat.format(msg, args);
return message;
} catch (MissingResourceException e) {
return getDefaultMessage(l);
}
}
private String getDefaultMessage(Localizable l) {
String key = l.getKey();
Object[] args = l.getArguments();
StringBuilder sb = new StringBuilder();
sb.append("[failed to localize] ");
sb.append(key);
if (args != null) {
sb.append('(');
for (int i = 0; i < args.length; ++i) {
if (i != 0)
sb.append(", ");
sb.append(String.valueOf(args[i]));
}
sb.append(')');
}
return sb.toString();
}
}