/**
 * Copyright (c) 2010, Regents of the University of Colorado All rights
 * reserved.
 * 
* Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
* Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer. Redistributions in binary
 * form must reproduce the above copyright notice, this list of conditions and
 * the following disclaimer in the documentation and/or other materials provided
 * with the distribution. Neither the name of the University of Colorado at
 * Boulder nor the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 * 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package clear.treebank;

import clear.util.IOUtil;
import java.util.HashMap;
import java.util.Scanner;

/**
 * Treebank headrules.
 *
 * @author Jinho D. Choi <b>Last update:</b> 9/1/2010
 */
public class TBHeadRules {

    static public final String FIELD_DELIM = "\t";
    static public final String HEAD_DELIM = ";";
    private HashMap<String, TBHeadRule> m_headrules;

    public TBHeadRules(String inputFile) {
        Scanner scan = IOUtil.createFileScanner(inputFile);
        m_headrules = new HashMap<>();

        while (scan.hasNextLine()) {
            String line = scan.nextLine();
            if (line.charAt(0) == '#') {
                continue;
            }
            String[] ls = line.split(FIELD_DELIM);
            m_headrules.put(ls[0], new TBHeadRule(ls[1], ls[2].split(HEAD_DELIM)));
        }
    }

    public TBHeadRule getHeadRule(String pos) {
        return m_headrules.get(pos);
    }
}