/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. The ASF licenses this file to You
* under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.protocol.client.util;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;
import org.apache.abdera.i18n.rfc4646.Lang;
import org.apache.abdera.i18n.rfc4646.Range;
import org.apache.abdera.model.Entry;
import org.apache.abdera.model.Link;
import org.apache.abdera.model.Source;
public final class LocalizationHelper {
private LocalizationHelper() {
}
public static Link[] selectAlternate(Source source) {
return selectAlternate(source, Locale.getDefault());
}
public static Link[] selectAlternate(Entry entry) {
return selectAlternate(entry, Locale.getDefault());
}
public static Link[] selectAlternate(Source source, Locale locale) {
return selectAlternate(source, new Range(Lang.fromLocale(locale), true));
}
public static Link[] selectAlternate(Entry entry, Locale locale) {
return selectAlternate(entry, new Range(Lang.fromLocale(locale), true));
}
public static Link[] selectAlternate(Entry entry, Locale... locales) {
Range[] ranges = new Range[locales.length];
for (int n = 0; n < locales.length; n++)
ranges[n] = new Range(Lang.fromLocale(locales[n]), true);
return selectAlternate(entry, ranges);
}
public static Link[] selectAlternate(Entry entry, Range range) {
return selectAlternate(entry, new Range[] {range});
}
public static Link[] selectAlternate(Entry entry, Range... ranges) {
return selectAlternate(entry.getLinks("alternate"), ranges);
}
public static Link[] selectAlternate(Entry entry, String range) {
return selectAlternate(entry, new String[] {range});
}
public static Link[] selectAlternate(Entry entry, String... ranges) {
Range[] r = new Range[ranges.length];
for (int n = 0; n < ranges.length; n++)
r[n] = new Range(ranges[n], true);
return selectAlternate(entry, r);
}
public static Link[] selectAlternate(Source source, Locale... locales) {
Range[] ranges = new Range[locales.length];
for (int n = 0; n < locales.length; n++)
ranges[n] = new Range(Lang.fromLocale(locales[n]), true);
return selectAlternate(source, ranges);
}
public static Link[] selectAlternate(Source source, Range range) {
return selectAlternate(source, new Range[] {range});
}
public static Link[] selectAlternate(Source source, Range... ranges) {
return selectAlternate(source.getLinks("alternate"), ranges);
}
public static Link[] selectAlternate(Source source, String range) {
return selectAlternate(source, new String[] {range});
}
public static Link[] selectAlternate(Source source, String... ranges) {
Range[] r = new Range[ranges.length];
for (int n = 0; n < ranges.length; n++)
r[n] = new Range(ranges[n], true);
return selectAlternate(source, r);
}
public static Link[] selectAlternate(List<Link> links, String range) {
return selectAlternate(links, new Range(range, true));
}
public static Link[] selectAlternate(List<Link> links, Range range) {
return selectAlternate(links, new Range[] {range});
}
public static Link[] selectAlternate(List<Link> links, Range... ranges) {
List<Link> matching = new ArrayList<Link>();
for (Range range : ranges) {
for (Link link : links) {
String hreflang = link.getHrefLang();
if (hreflang != null) {
Lang lang = new Lang(hreflang);
Range basic = range.toBasicRange();
Lang blang = !basic.toString().equals("*") ? new Lang(basic.toString()) : null;
if (range.matches(lang) || (blang != null && lang.isParentOf(blang)))
matching.add(link);
}
}
Collections.sort(matching, new Comparator<Link>() {
public int compare(Link o1, Link o2) {
Lang l1 = new Lang(o1.getHrefLang());
Lang l2 = new Lang(o2.getHrefLang());
return l1.compareTo(l2);
}
});
}
return matching.toArray(new Link[matching.size()]);
}
}