QuoteHandler.java

  1. /*
  2.  *
  3.  * The DbUnit Database Testing Framework
  4.  * Copyright (C)2002-2004, DbUnit.org
  5.  *
  6.  * This library is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * This library is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with this library; if not, write to the Free Software
  18.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19.  *
  20.  */

  21. package org.dbunit.dataset.common.handlers;

  22. import org.slf4j.Logger;
  23. import org.slf4j.LoggerFactory;

  24. /**
  25.  * @author fede
  26.  * @author Last changed by: $Author$
  27.  * @version $Revision$ $Date$
  28.  * @since 2.2 (Sep 12, 2004)
  29.  */
  30. public class QuoteHandler extends AbstractPipelineComponent {

  31.     /**
  32.      * Logger for this class
  33.      */
  34.     private static final Logger logger = LoggerFactory.getLogger(QuoteHandler.class);

  35.     public static final char QUOTE_CHAR = '"';


  36.    
  37.     private QuoteHandler() {
  38.     }

  39.     public static final PipelineComponent ACCEPT() {
  40.         logger.debug("ACCEPT() - start");

  41.         return createPipelineComponent(new QuoteHandler(), new ACCEPT());
  42.     }

  43.     public static final PipelineComponent IGNORE() {
  44.         logger.debug("IGNORE() - start");

  45.         return createPipelineComponent(new QuoteHandler(), new IGNORE());
  46.     }

  47.     public static final PipelineComponent QUOTE() {
  48.         logger.debug("QUOTE() - start");

  49.         return createPipelineComponent(new QuoteHandler(), new QUOTE());
  50.     }

  51.     public static final PipelineComponent UNQUOTE() {
  52.         logger.debug("UNQUOTE() - start");

  53.         return createPipelineComponent(new QuoteHandler(), new UNQUOTE());
  54.     }

  55.     public boolean canHandle(char c) throws IllegalInputCharacterException {
  56.         if(logger.isDebugEnabled())
  57.             logger.debug("canHandle(c={}) - start", String.valueOf(c));

  58.         if (c == QUOTE_CHAR) {
  59.             return true;
  60.         }
  61.         return false;
  62.     }


  63.     static protected class QUOTE extends Helper {

  64.         /**
  65.          * Logger for this class
  66.          */
  67.         private static final Logger logger = LoggerFactory.getLogger(QUOTE.class);

  68.         public void helpWith(char c) {
  69.             if(logger.isDebugEnabled())
  70.                 logger.debug("helpWith(c={}) - start", String.valueOf(c));

  71.             getHandler().getPipeline().putFront(SeparatorHandler.ACCEPT());
  72.             getHandler().getPipeline().putFront(WhitespacesHandler.ACCEPT());
  73.             getHandler().getPipeline().putFront(IsAlnumHandler.ACCEPT());
  74.             getHandler().getPipeline().putFront(QuoteHandler.UNQUOTE());
  75.             getHandler().getPipeline().putFront(EscapeHandler.ESCAPE());
  76.             // ignore the char
  77.         }

  78.     }

  79.     static protected class UNQUOTE extends Helper {

  80.         /**
  81.          * Logger for this class
  82.          */
  83.         private static final Logger logger = LoggerFactory.getLogger(UNQUOTE.class);

  84.         public void helpWith(char c) {
  85.             if(logger.isDebugEnabled())
  86.                 logger.debug("helpWith(c={}) - start", String.valueOf(c));

  87.             try {
  88.                 getHandler().getPipeline().removeFront();
  89.                 getHandler().getPipeline().removeFront();
  90.                 getHandler().getPipeline().removeFront();
  91.                 getHandler().getPipeline().removeFront();
  92.                 getHandler().getPipeline().removeFront();
  93.             } catch (PipelineException e) {
  94.                 throw new RuntimeException(e.getMessage());
  95.             }
  96.             // ignore the char
  97.         }

  98.         public boolean allowForNoMoreInput() {
  99.             logger.debug("allowForNoMoreInput() - start");

  100.             throw new IllegalStateException("end of input while waiting for a closing quote");
  101.         }
  102.     }

  103. }