org.apache.abdera.i18n.rfc4646.enums.Extlang Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of abdera-i18n

RFC 3987 (Internationlaized Resource Identifier) libraries.

There is a newer version: 1.1.3

/*
 * 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.i18n.rfc4646.enums;

import java.util.Locale;

import org.apache.abdera.i18n.rfc4646.Subtag;

/**
 * Enum constants used to validate language tags
 */
public enum Extlang {
    // none registered yet
    ;

    private final String deprecated;
    private final String preferred;
    private final String prefix;
    private final String[] descriptions;

    private Extlang(String dep, String pref, String prefix, String... desc) {
        this.deprecated = dep;
        this.preferred = pref;
        this.prefix = prefix;
        this.descriptions = desc;
    }

    public String getDeprecated() {
        return deprecated;
    }

    public boolean isDeprecated() {
        return deprecated != null;
    }

    public String getPreferredValue() {
        return preferred;
    }

    public Extlang getPreferred() {
        return preferred != null ? valueOf(preferred.toUpperCase(Locale.US)) : this;
    }

    public String getPrefix() {
        return prefix;
    }

    public String getDescription() {
        return descriptions.length > 0 ? descriptions[0] : null;
    }

    public String[] getDescriptions() {
        return descriptions;
    }

    public Subtag newSubtag() {
        return new Subtag(this);
    }

    public static Extlang valueOf(Subtag subtag) {
        if (subtag == null)
            return null;
        if (subtag.getType() == Subtag.Type.PRIMARY)
            return valueOf(subtag.getName().toUpperCase(Locale.US));
        else
            throw new IllegalArgumentException("Wrong subtag type");
    }

}