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re PR libgcj/6576 (java.util.ResourceBundle.getResource ignores locale)

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Fix for PR libgcj/6576:
	* java/util/ResourceBundle.java (tryBundle): Cache `null' if we
	didn't find a given bundle.
	(getBundle): Don't require base bundle.
	(setParent): Removed old comment.
	(tryLocalBundle): Try components even if preceding components were
	empty.

From-SVN: r57442
This commit is contained in:
Tom Tromey 2002-09-23 17:56:33 +00:00 committed by Tom Tromey
parent 97d48e5ad4
commit 8cf3536464
2 changed files with 135 additions and 83 deletions
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10
libjava/ChangeLog
View File

@ -1,3 +1,13 @@
2002-09-22 Tom Tromey <tromey@redhat.com>
Fix for PR libgcj/6576:
* java/util/ResourceBundle.java (tryBundle): Cache `null' if we
didn't find a given bundle.
(getBundle): Don't require base bundle.
(setParent): Removed old comment.
(tryLocalBundle): Try components even if preceding components were
empty.
2002-09-22 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* Makefile.am (all-multi): Fix multilib parallel build.

208
libjava/java/util/ResourceBundle.java
View File

@ -65,7 +65,7 @@ baseName_<i>def. language</i>_<i>def. country</i>
baseName_<i>def. language</i>
baseName</pre>
*
* <p>A bundle is backed up by less specific bundles (omiting variant, country
* <p>A bundle is backed up by less specific bundles (omitting variant, country
* or language). But it is not backed up by the default language locale.
*
* <p>If you provide a bundle for a given locale, say
@ -239,7 +239,6 @@ public abstract class ResourceBundle
*/
protected void setParent(ResourceBundle parent)
{
// Shall we ignore the old parent?
this.parent = parent;
}
@ -362,42 +361,59 @@ public abstract class ResourceBundle
cache = new HashMap();
resourceBundleCache.put(classLoader, cache);
}
else
else if (cache.containsKey(name))
{
Reference ref = (Reference) cache.get(name);
if (ref != null)
{
ResourceBundle rb = (ResourceBundle) ref.get();
if (rb != null)
// rb should already have the right parent, except if
// something very strange happened.
return rb;
}
Reference ref = (Reference) cache.get(name);
ResourceBundle result = null;
// If REF is null, that means that we added a `null' value to
// the hash map. That means we failed to find the bundle
// previously, and we cached that fact. The JDK does this, so
// it must be ok.
if (ref == null)
throw new MissingResourceException("Bundle " + baseName
+ " not found",
baseName, "");
else
{
ResourceBundle rb = (ResourceBundle) ref.get();
if (rb != null)
{
// RB should already have the right parent, except if
// something very strange happened.
return rb;
}
// If RB is null, then we previously found it but it was
// collected. So we try again.
}
}
// It is ok if this returns null. We aren't required to have the
// base bundle.
ResourceBundle baseBundle = tryBundle(baseName, emptyLocale,
classLoader, null, cache);
if (baseBundle == null)
// JDK says, that if one provides a bundle base_en_UK, one
// must also provide the bundles base_en and base.
// This implies that if there is no bundle for base, there
// is no bundle at all.
throw new MissingResourceException("Bundle " + baseName + " not found",
baseName, "");
// Now use the default locale.
// Now use our locale, followed by the default locale. We only
// need to try the default locale if our locale is different, and
// if our locale failed to yield a result other than the base
// bundle.
ResourceBundle bundle = tryLocalBundle(baseName, locale,
classLoader, baseBundle, cache);
if (bundle == baseBundle && !locale.equals(Locale.getDefault()))
bundle = tryLocalBundle(baseName, Locale.getDefault(),
classLoader, baseBundle, cache);
{
bundle = tryLocalBundle(baseName, Locale.getDefault(),
classLoader, baseBundle, cache);
// We need to record that the argument locale maps to the
// bundle we just found. If we didn't find a bundle, record
// that instead.
if (bundle == null)
cache.put(name, null);
else
cache.put(name, new SoftReference(bundle));
}
// Check whether baseName_locale has been loaded; if not, map the
// "baseName" bundle to "baseName_locale" to avoid retrying to load
// baseName_locale.
Reference ref = (Reference) cache.get(name);
if (ref == null)
cache.put(name, new SoftReference(bundle));
if (bundle == null)
throw new MissingResourceException("Bundle " + baseName + " not found",
baseName, "");
return bundle;
}
@ -440,15 +456,28 @@ public abstract class ResourceBundle
HashMap cache)
{
// First look into the cache.
// XXX We should remove cleared references from the cache.
Reference ref = (Reference) cache.get(localizedName);
if (ref != null)
if (cache.containsKey(localizedName))
{
ResourceBundle rb = (ResourceBundle) ref.get();
if (rb != null)
// rb should already have the right parent, except if
// something very strange happened.
return rb;
Reference ref = (Reference) cache.get(localizedName);
ResourceBundle result = null;
// If REF is null, that means that we added a `null' value to
// the hash map. That means we failed to find the bundle
// previously, and we cached that fact. The JDK does this, so
// it must be ok.
if (ref == null)
return null;
else
{
ResourceBundle rb = (ResourceBundle) ref.get();
if (rb != null)
{
// RB should already have the right parent, except if
// something very strange happened.
return rb;
}
// If RB is null, then we previously found it but it was
// collected. So we try again.
}
}
// foundBundle holds exact matches for the localizedName resource
@ -470,30 +499,38 @@ public abstract class ResourceBundle
// ignore them all
}
if (foundBundle == null)
try
{
InputStream is;
final String resourceName
= localizedName.replace('.', '/') + ".properties";
if (classloader == null)
is = ClassLoader.getSystemResourceAsStream(resourceName);
else
is = classloader.getResourceAsStream(resourceName);
if (is != null)
{
foundBundle = new PropertyResourceBundle(is);
foundBundle.parent = bundle;
foundBundle.locale = locale;
}
}
catch (IOException ex)
{
}
{
try
{
InputStream is;
final String resourceName
= localizedName.replace('.', '/') + ".properties";
if (classloader == null)
is = ClassLoader.getSystemResourceAsStream(resourceName);
else
is = classloader.getResourceAsStream(resourceName);
if (is != null)
{
foundBundle = new PropertyResourceBundle(is);
foundBundle.parent = bundle;
foundBundle.locale = locale;
}
}
catch (IOException ex)
{
}
}
if (foundBundle != null)
// Put the result into the hash table. If we didn't find anything
// here, we record our parent bundle. If we record `null' that means
// nothing, not even the base, was found.
if (foundBundle == null)
foundBundle = bundle;
if (foundBundle == null)
cache.put(localizedName, null);
else
cache.put(localizedName, new SoftReference(foundBundle));
return foundBundle != null ? foundBundle : bundle;
return foundBundle;
}
/**
@ -501,45 +538,50 @@ public abstract class ResourceBundle
* locales with the same language.
*
* @param name the name
* @param locale the locale, that must be used exactly
* @param locale the locale
* @param classloader the classloader
* @param bundle the backup (parent) bundle
* @return the resource bundle if it was loaded, otherwise the backup
*/
private static final ResourceBundle tryLocalBundle(String baseName,
Locale locale,
Locale locale,
ClassLoader classloader,
ResourceBundle bundle,
HashMap cache)
{
final String language = locale.getLanguage();
final String country = locale.getCountry();
final String variant = locale.getVariant();
StringBuffer sb = new StringBuffer(60);
sb.append(baseName);
sb.append('_');
if (language.length() > 0)
{
final String country = locale.getCountry();
sb.append(baseName).append('_').append(language);
String name = sb.toString();
if (country.length() != 0)
{
bundle = tryBundle(name, new Locale(language),
classloader, bundle, cache);
sb.append('_').append(country);
name = sb.toString();
final String variant = locale.getVariant();
if (variant.length() != 0)
{
bundle = tryBundle(name, new Locale(language, country),
classloader, bundle, cache);
sb.append('_').append(variant);
name = sb.toString();
}
}
bundle = tryBundle(name, locale, classloader, bundle, cache);
sb.append(language);
bundle = tryBundle(sb.toString(), new Locale(language),
classloader, bundle, cache);
}
// If LANGUAGE was empty, we still need to try the other
// components, and the `_' is required.
sb.append('_');
if (country.length() > 0)
{
sb.append(country);
bundle = tryBundle(sb.toString(), new Locale(language, country),
classloader, bundle, cache);
}
sb.append('_');
if (variant.length() > 0)
{
sb.append(variant);
bundle = tryBundle(sb.toString(), locale,
classloader, bundle, cache);
}
return bundle;
}
} // class ResourceBundle
}