Maybe that should be added to the comments in Util since it is not apparent.
Caleb
Vincent Massol wrote:
> IMO we'll need to find a better place than Util for this since Util is meant
> to be deprecated and we should slim it down instead.
>
> Thanks
> -Vincent
>
> On Aug 18, 2010, at 11:44 PM, abusenius (SVN) wrote:
>
>> Author: abusenius
>> Date: 2010-08-18 23:44:07 +0200 (Wed, 18 Aug 2010)
>> New Revision: 30697
>>
>> Modified:
>> platform/core/trunk/xwiki-core/src/main/java/com/xpn/xwiki/util/Util.java
>> Log:
>> Added Util.normalizeLanguage(String)
>>
>> Modified:
>> platform/core/trunk/xwiki-core/src/main/java/com/xpn/xwiki/util/Util.java
>> ===================================================================
>> ---
>> platform/core/trunk/xwiki-core/src/main/java/com/xpn/xwiki/util/Util.java
>> 2010-08-18 19:11:05 UTC (rev 30696)
>> +++
>> platform/core/trunk/xwiki-core/src/main/java/com/xpn/xwiki/util/Util.java
>> 2010-08-18 21:44:07 UTC (rev 30697)
>> @@ -37,7 +37,9 @@
>> import java.util.HashSet;
>> import java.util.Hashtable;
>> import java.util.List;
>> +import java.util.Locale;
>> import java.util.Map;
>> +import java.util.MissingResourceException;
>> import java.util.Set;
>> import java.util.Vector;
>>
>> @@ -880,4 +882,54 @@
>>
>> return
>> Thread.currentThread().getContextClassLoader().getResourceAsStream(resource);
>> }
>> +
>> + /**
>> + * Normalize the given language code. Converts the given language code
>> to lower case and checks its validity (i.e.
>> + * whether it is an ISO 639 language code or the string "default").
>> + * <p><pre>
>> + * Util.normalizeLanguage(null) = null
>> + * Util.normalizeLanguage("") = ""
>> + * Util.normalizeLanguage(" ") = ""
>> + * Util.normalizeLanguage("default") = "default"
>> + * Util.normalizeLanguage("DeFault") = "default"
>> + * Util.normalizeLanguage("invalid") = "default"
>> + * Util.normalizeLanguage("en") = "en"
>> + * Util.normalizeLanguage("DE_at") = "de_AT"
>> + * </pre></p>
>> + *
>> + * @param languageCode the language code to normalize
>> + * @return normalized language code or the string "default" if the code
>> is invalid
>> + */
>> + public static String normalizeLanguage(String languageCode)
>> + {
>> + if (languageCode == null) {
>> + return null;
>> + }
>> + if (StringUtils.isBlank(languageCode)) {
>> + return "";
>> + }
>> + // handle language_COUNTRY case
>> + final String separator = "_";
>> + String[] parts = languageCode.toLowerCase().split(separator);
>> + String result = parts[0];
>> + if (parts.length > 1) {
>> + parts[1] = parts[1].toUpperCase();
>> + // NOTE cannot use Locale#toString(), because it would change
>> some language codes
>> + result = parts[0] + separator + parts[1];
>> + }
>> + // handle the "default" case
>> + final String defaultLanguage = "default";
>> + if (defaultLanguage.equals(result)) {
>> + return defaultLanguage;
>> + }
>> + try {
>> + Locale l = new Locale(parts[0], parts.length > 1 ? parts[1] :
>> "");
>> + // Will throw an exception if the language code is not valid
>> + l.getISO3Language();
>> + return result;
>> + } catch (MissingResourceException ex) {
>> + LOG.warn("Invalid language: " + languageCode);
>> + }
>> + return defaultLanguage;
>> + }
>> }
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