de.vandermeer.skb.datatool.applications.options.AO_KeySeparator.java Source code

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Here is the source code for de.vandermeer.skb.datatool.applications.options.AO_KeySeparator.java

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/* Copyright 2014 Sven van der Meer <vdmeer.sven@mykolab.com>
 *
 * Licensed 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.
 */

package de.vandermeer.skb.datatool.applications.options;

import org.apache.commons.cli.Option;

import de.vandermeer.execs.options.AbstractApplicationOption;

/**
 * Application option "key-sep", a string to separate keys.
 *
 * @author     Sven van der Meer &lt;vdmeer.sven@mykolab.com&gt;
 * @version    v0.0.1 build 160301 (01-Mar-16) for Java 1.8
 * @since      v0.0.1
 */
public class AO_KeySeparator extends AbstractApplicationOption<Character> {

    /**
     * Returns the new option.
     * @param defaultValue option default value
     * @param longDescription option long description
     * @throws NullPointerException - if description parameter is null
     * @throws IllegalArgumentException - if description parameter is empty
     */
    public AO_KeySeparator(Character defaultValue, String longDescription) {
        super(defaultValue, "a character as separator between elements of a key", longDescription);

        Option.Builder builder = Option.builder();
        builder.longOpt("key-sep");
        builder.hasArg().argName("SEP");
        builder.required(false);
        this.setCliOption(builder.build());
    }

    @Override
    public Character convertValue(Object value) {
        if (value instanceof Character) {
            return (Character) value;
        } else if (value instanceof String) {
            String s = (String) value;
            if (s.length() == 0 || s.length() > 1) {
                return null;
            }
            return s.toCharArray()[0];
        }
        return null;
    }

}