/**
 * Copyright (C) 2002-2006 Bas Peters
 *
 * This file is part of MARC4J
 *
 * MARC4J is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public 
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 *
 * MARC4J is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public 
 * License along with MARC4J; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.marc4j.samples;

import java.io.InputStream;

import org.marc4j.MarcReader;
import org.marc4j.MarcStreamReader;
import org.marc4j.marc.ControlField;
import org.marc4j.marc.Record;

/**
 * Read the language code from a 008 control field.
 * 
 * @author Bas Peters
 */
public class ControlFieldExample {

    public static void main(String args[]) throws Exception {

        InputStream input = ReadMarcExample.class
                .getResourceAsStream("resources/chabon.mrc");

        MarcReader reader = new MarcStreamReader(input);
        while (reader.hasNext()) {
            Record record = reader.next();
            
            // get control field with tag 008
            ControlField controlField = (ControlField) record
                    .getVariableField("008");
            
            String data = controlField.getData();

            // the three-character MARC language code takes character
            // positions 35-37
            String lang = data.substring(35, 38);
            System.out.println("Language code (008 35-37): " + lang);
        }

    }
}