/*

  * Copyright (c) 2004 International Decision Systems, Inc.  All Rights Reserved.

  *

  * By using this Software, You acknowledge that the Software is a valuable asset

  * and trade secret of either International Decision Systems, Inc. ("IDSI") or a

  * third party supplier of IDSI and constitutes confidential and proprietary

  * information.

  *

  * NEITHER IDSI NOR ANY AGENT OR PERSON ACTING FOR OR WITH IDSI HAS MADE OR DOES

  * MAKE ANY STATEMENTS, AFFIRMATIONS, REPRESENTATIONS OR WARRANTIES WHATSOEVER

  * TO YOU, WHETHER EXPRESS OR IMPLIED, AS TO THE SOFTWARE, THE QUALITY OR

  * CONDITION OF THE SOFTWARE, OR THE OPERATING CHARACTERISTICS OR RELIABILITY OF

  * THE SOFTWARE, OR ITS SUITABILITY FOR ANY GENERAL OR PARTICULAR PURPOSE, OR AS

  * TO ANY OTHER MATTER WHATSOEVER; ANY AND ALL OTHER WARRANTIES INCLUDING

  * WITHOUT LIMITATION ANY WARRANTIES IMPLIED BY LAW, SUCH AS THE IMPLIED

  * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND TITLE,

  * USE AND NON-INFRINGEMENT; ARE HEREBY EXPRESSLY DISCLAIMED AND EXCLUDED.

 */

 package net.sourceforge.addam.impexp.csv;

 import java.io.IOException;

 import java.io.Reader;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 /**

  * Parses a CSV file, reading the first line as a header line containing keys;

  * each record is returned as a map from the header line key to the column value.

  * If any row has a different number of columns as the header row, an

  * IndexOutOfBoundsException is thrown.

  *

  * @author Tim Dawson

  * @since Sep 21, 2004

  */

 public class MapCSVParser extends CSVParser {

     private List keys;

     public MapCSVParser(Reader in) {

         super(in);

     }

     private List getKeys() throws IOException, CSVFormatException {

         if (keys == null) {

             keys = readLine();

         }

         return keys;

     }

     public Map readMap() throws IOException, CSVFormatException {

         List keys = getKeys();

         List values = readLine();

         Map returnValue = new HashMap();

         if (values != null && values.size() > 0) {

             if (keys.size() != values.size()) {

                 throw new IndexOutOfBoundsException("row " + this.getLineNumber() +

                         " has " + values.size() + " instead of " + keys.size());

             }

             for (int i = 0; i < keys.size(); i++) {

                 returnValue.put(keys.get(i), values.get(i));

             }

         }

         return returnValue;

     }

 }