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/** Copyright 2003 by Jean-Hugues de Raigniac <jhraigniac@workingfrog.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
package org.workingfrog.i18n.util;
import java.util.HashSet;
import java.util.Locale;
import java.util.MissingResourceException;
/**
* A tool class to help localization.
*
* @author Jean-Hugues de Raigniac
*
*/
public class Translator {
/** Enable lazy load of bundles. */
private static HashSet loadedBundles = new HashSet();
/** Will contain all checking logic. */
private static Validator validator = new Validator();
/** Locale used in default resource bundle. */
private static Locale defaultLocale = new Locale("en", "");
public static void init () {
PropertiesLoader.init();
LogLevel.setCurrent(PropertiesLoader.getLogLevel());
}
public static String getBundlesPath () {
return PropertiesLoader.getBundlesPath();
}
public static void setBundlesPath (String path) {
PropertiesLoader.setBundlesPath(path);
}
public static String getLogLevel () {
return PropertiesLoader.getLogLevel();
}
public static void setLogLevel (String level) {
PropertiesLoader.setLogLevel(level);
LogLevel.setCurrent(level);
}
public static void setLogLevel (LogLevel level) {
PropertiesLoader.setLogLevel(level);
LogLevel.setCurrent(level);
}
public static void loadBundle (String binding, String resource) {
boolean succeeded = true;
try {
loadedBundles.add(binding);
Localizer.addResource(binding, resource);
} catch (MissingResourceException e) {
Translator.log(LogLevel.I18N,
"Resource " + resource + " not found.");
succeeded = false;
}
if (succeeded) {
validator.storeBundle(binding);
}
}
public static void loadBundle (String binding) {
Translator.loadBundle(binding, getBundlesPath() + "." + binding);
}
public static void setDefaultLocale (Locale locale) {
Translator.defaultLocale = locale;
}
public static void setLocale (Locale locale) {
Localizer.switchCurrentLocale(locale);
validator.clearLogs();
}
public static Locale getCurrentLocale () {
return Locale.getDefault();
}
/**
* Migration method : while older i18n process is still active in
* application, returns legacy values for legacy keys.
*
* @param i18nKey key to localize
* @param legacyValue obtained from legacy i18n process, returned if
* legacy key
* @return localised value for i18nKey
*/
public static String localize (String i18nKey, String legacyValue) {
if (!isValidBundle(i18nKey)) {
return legacyValue;
}
return localize(i18nKey);
}
public static String localize (String i18nKey) {
lazyLoadBundle(validator.getBinding(i18nKey));
if (!validator.check(i18nKey)) {
Translator.log(validator.getReport());
}
return validator.getLocalizedValue();
}
private static void lazyLoadBundle (String binding) {
if (!loadedBundles.contains(binding)) {
Translator.loadBundle(binding);
}
}
public static void checkKey (String i18nKey, Object source) {
// public static void checkKey (String i18nKey) {
if (!validator.checkName(i18nKey)) {
Translator.log(validator.getReport());
}
}
public static boolean isValidBundle (String i18nKey) {
lazyLoadBundle(validator.getBinding(i18nKey));
return validator.checkBundle(validator.getBinding(i18nKey));
}
public static String checkValue (String i18nKey, Object source) {
// return Translator.localize(i18nKey, source);
return Translator.localize(i18nKey);
}
public static boolean checkObject (Object object, Object source) {
return validator.isLocaleListener(object, source);
}
public static void log (LogLevel level, String message) {
if (LogLevel.isChecking(level)) {
Translator.log(message);
}
}
public static void log (String message) {
System.out.println(message);
}
public static Locale[] getLocales () {
return getLocales(getBundlesPath());
}
public static Locale[] getLocales (Object object) {
Locale[] locales = Localizer.getLocales(object);
Locale[] result = new Locale[locales.length + 1];
result[0] = Translator.defaultLocale;
for (int i = 0; i < locales.length; i++) {
result[i + 1] = locales[i];
}
return result;
}
}
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