/*
* This method find the appropriate Manifest Localization file inside the
* bundle. If not found, return null.
*/
ResourceBundle getResourceBundle(String localeString, boolean isDefaultLocale) {
BundleResourceBundle resourceBundle = lookupResourceBundle(localeString);
if (isDefaultLocale) return (ResourceBundle) resourceBundle;
// need to determine if this is resource bundle is an empty stem
// if it is then the default locale should be used
if (resourceBundle == null || resourceBundle.isStemEmpty())
return (ResourceBundle) lookupResourceBundle(Locale.getDefault().toString());
return (ResourceBundle) resourceBundle;
}
private BundleResourceBundle lookupResourceBundle(String localeString) {
// get the localization header as late as possible to avoid accessing the raw headers
// getting the first value from the raw headers forces the manifest to be parsed (bug 332039)
String localizationHeader = rawHeaders.get(Constants.BUNDLE_LOCALIZATION);
if (localizationHeader == null)
localizationHeader = Constants.BUNDLE_LOCALIZATION_DEFAULT_BASENAME;
BundleResourceBundle result = cache.get(localeString);
if (result != null) return result.isEmpty() ? null : result;
// Collect all the necessary inputstreams to create the resource bundle without
// holding any locks. Finding resources and inputstreams from the wirings requires a
// read lock on the module database. We must not hold the cache lock while doing this;
// otherwise out of order locks will be possible when the resolver needs to clear the cache
String[] nlVarients = buildNLVariants(localeString);
InputStream[] nlStreams = new InputStream[nlVarients.length];
for (int i = nlVarients.length - 1; i >= 0; i--) {
URL url =
findResource(
localizationHeader
+ (nlVarients[i].equals("") ? nlVarients[i] : '_' + nlVarients[i])
+ ".properties"); //$NON-NLS-1$ //$NON-NLS-2$
if (url != null) {
try {
nlStreams[i] = url.openStream();
} catch (IOException e) {
// ignore
}
}
}
synchronized (cache) {
BundleResourceBundle parent = null;
for (int i = nlVarients.length - 1; i >= 0; i--) {
BundleResourceBundle varientBundle = null;
InputStream varientStream = nlStreams[i];
if (varientStream == null) {
varientBundle = cache.get(nlVarients[i]);
} else {
try {
varientBundle = new LocalizationResourceBundle(varientStream);
} catch (IOException e) {
// ignore and continue
} finally {
if (varientStream != null) {
try {
varientStream.close();
} catch (IOException e3) {
// Ignore exception
}
}
}
}
if (varientBundle == null) {
varientBundle = new EmptyResouceBundle(nlVarients[i]);
}
if (parent != null) varientBundle.setParent((ResourceBundle) parent);
cache.put(nlVarients[i], varientBundle);
parent = varientBundle;
}
result = cache.get(localeString);
return result.isEmpty() ? null : result;
}
}