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package org.glassfish.jersey.internal.l10n;
import java.io.IOException;
import java.net.URL;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import org.glassfish.jersey.internal.OsgiRegistry;
import org.glassfish.jersey.internal.util.ReflectionHelper;
import org.glassfish.hk2.osgiresourcelocator.ResourceFinder;
/**
* 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 (Localizable.NOT_LOCALIZABLE.equals(key)) {
// this message is not localizable
return (String) l.getArguments()[0];
}
String bundlename = l.getResourceBundleName();
try {
ResourceBundle bundle = _resourceBundles.get(bundlename);
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 OSGi
OsgiRegistry osgiRegistry = ReflectionHelper.getOsgiRegistryInstance();
if (osgiRegistry != null) {
bundle = osgiRegistry.getResourceBundle(bundlename);
} else {
final String path = bundlename.replace('.', '/') + ".properties";
final URL bundleUrl = ResourceFinder.findEntry(path);
if (bundleUrl != null) {
try {
bundle = new PropertyResourceBundle(bundleUrl.openStream());
} catch (IOException ex) {
// ignore
}
}
}
}
}
}
if (bundle == null) {
return getDefaultMessage(l);
} else {
_resourceBundles.put(bundlename, bundle);
}
}
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();
}
}