import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
+import java.util.Collections;
+import java.util.Comparator;
import java.util.HashMap;
+import java.util.LinkedList;
import java.util.Locale;
import javax.xml.parsers.DocumentBuilder;
public class Language {
- private static HashMap<String, Language> langs = new HashMap<String, Language>();
+ public static final String SESSION_ATTRIB_NAME = "lang";
- private HashMap<String, String> translations = new HashMap<String, String>();
+ private static Locale[] supportedLocales;
+
+ static {
+ LinkedList<Locale> supported = new LinkedList<>();
+ File locales = new File("locale");
+ for (File f : locales.listFiles()) {
+ if ( !f.getName().endsWith(".xml")) {
+ continue;
+ }
+ String language = f.getName().split("\\.", 2)[0];
+ supported.add(getLocaleFromString(language));
+ }
+ Collections.sort(supported, new Comparator<Locale>() {
- private Locale l;
+ @Override
+ public int compare(Locale o1, Locale o2) {
+ return o1.toString().compareTo(o2.toString());
+ }
+
+ });
+ supportedLocales = supported.toArray(new Locale[supported.size()]);
+ }
- protected Language(String language) throws ParserConfigurationException, IOException, SAXException {
+ public static Locale getLocaleFromString(String language) {
if (language.contains("_")) {
- String[] parts = language.split("_");
- l = new Locale(parts[0], parts[1]);
+ String[] parts = language.split("_", 2);
+ return new Locale(parts[0], parts[1]);
+
} else {
- l = new Locale(language);
+ return new Locale(language);
}
+ }
+ public static Locale[] getSupportedLocales() {
+ return supportedLocales;
+ }
+
+ private static HashMap<String, Language> langs = new HashMap<String, Language>();
+
+ private HashMap<String, String> translations = new HashMap<String, String>();
+
+ private Locale locale;
+
+ private static Locale project(Locale locale) {
+ if (locale == null) {
+ return Locale.getDefault();
+ }
+ File file = new File("locale", locale.toString() + ".xml");
+ if ( !file.exists()) {
+ return new Locale(locale.getLanguage());
+ }
+ return locale;
+ }
+
+ protected Language(Locale locale) throws ParserConfigurationException, IOException, SAXException {
+ File file = new File("locale", locale.toString() + ".xml");
+ this.locale = locale;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
- Document d = db.parse(new FileInputStream(new File("locale", language + ".xml")));
+ Document d = db.parse(new FileInputStream(file));
NodeList nl = d.getDocumentElement().getChildNodes();
for (int i = 0; i < nl.getLength(); i++) {
if ( !(nl.item(i) instanceof Element)) {
return string;
}
- public static Language getInstance(String language) {
- Language l = langs.get(language);
- if (l == null) {
- try {
- l = new Language(language);
- langs.put(language, l);
- } catch (ParserConfigurationException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- } catch (SAXException e) {
- e.printStackTrace();
+ public static Language getInstance(Locale locale) {
+ locale = project(locale);
+ File file = new File("locale", locale.toString() + ".xml");
+ if ( !file.exists()) {
+ return null;
+ }
+ Language lang = langs.get(locale.toString());
+ if (lang == null) {
+ synchronized (Language.class) {
+ lang = langs.get(locale.toString());
+ if (lang != null) {
+ return lang;
+ }
+ try {
+ lang = new Language(locale);
+ langs.put(locale.toString(), lang);
+ } catch (ParserConfigurationException e) {
+ e.printStackTrace();
+ } catch (IOException e) {
+ e.printStackTrace();
+ } catch (SAXException e) {
+ e.printStackTrace();
+ }
}
}
- return l;
+ return lang;
}
public Locale getLocale() {
- return l;
+ return locale;
}
}