AcceptLanguageParser.java

package it.miriade.commons.web.utils;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

public class AcceptLanguageParser {

	/**
	 * Ritorna una lista di Array Object contenent in Object[0] l'oggetto Locale e in Object[1] il valore "q".
	 * 
	 * @param header
	 * @return
	 */
	public List<Object[]> parseLocale(String header) {

		List<Object[]> list = new ArrayList<Object[]>();
		for (String str : header.split(",")) {
			String[] arr = str.trim().replace("-", "_").split(";");

			// Parse the locale
			Locale locale = null;
			String[] l = arr[0].split("_");
			switch (l.length) {
			case 2:
				locale = new Locale(l[0], l[1]);
				break;
			case 3:
				locale = new Locale(l[0], l[1], l[2]);
				break;
			default:
				locale = new Locale(l[0]);
				break;
			}

			// Parse the q-value
			Double q = 1.0D;
			for (String s : arr) {
				s = s.trim();
				if (s.startsWith("q=")) {
					q = Double.parseDouble(s.substring(2).trim());
					break;
				}
			}

			// Print the Locale and associated q-value
			// System.out.println(q + " - " + arr[0] + "\t " + locale.getDisplayLanguage());
			list.add(new Object[] { locale, q });
		}
		return list;
	}
}