+1 We should write something about it.
Alex
On 09/01/2010 01:33 PM, Caleb James DeLisle wrote:
> 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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>>
>
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