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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  
22  package org.dbunit.dataset.common.handlers;
23  
24  import org.slf4j.Logger;
25  import org.slf4j.LoggerFactory;
26  
27  /**
28   * @author fede
29   * @author Last changed by: $Author$
30   * @version $Revision$ $Date$
31   * @since 2.2 (Sep 12, 2004)
32   */
33  public class EscapeHandler extends AbstractPipelineComponent {
34  
35      /**
36       * Logger for this class
37       */
38      private static final Logger logger = LoggerFactory.getLogger(EscapeHandler.class);
39  
40      public static final char DEFAULT_ESCAPE_CHAR = '\\';
41  
42      private EscapeHandler() {
43      }
44  
45      public static final PipelineComponent ACCEPT() {
46          logger.debug("ACCEPT() - start");
47          return createPipelineComponent(new EscapeHandler(), new ACCEPT());
48      }
49  
50      // @todo: make sense?
51      public static final PipelineComponent IGNORE() {
52          logger.debug("IGNORE() - start");
53          return createPipelineComponent(new EscapeHandler(), new IGNORE());
54      }
55  
56      public static final PipelineComponent ESCAPE() {
57          logger.debug("ESCAPE() - start");
58          return createPipelineComponent(new EscapeHandler(), new ESCAPE());
59      }
60  
61      public boolean canHandle(char c) throws IllegalInputCharacterException {
62          if(logger.isDebugEnabled())
63              logger.debug("canHandle(c={}) - start", String.valueOf(c));
64  
65          PipelineConfig pipelineConfig = this.getPipelineConfig();
66          if (c == pipelineConfig.getEscapeChar()) {
67              return true;
68          }
69          return false;
70      }
71  
72      static private class ESCAPE extends Helper {
73  
74          /**
75           * Logger for this class
76           */
77          private static final Logger logger = LoggerFactory.getLogger(ESCAPE.class);
78  
79          public void helpWith(char c) {
80              if(logger.isDebugEnabled())
81                  logger.debug("helpWith(c={}) - start", String.valueOf(c));
82  
83              getHandler().getPipeline().putFront(EnforceHandler.ENFORCE(
84                      new PipelineComponent [] {
85                          QuoteHandler.ACCEPT(), EscapeHandler.ACCEPT()
86                      }
87              ));
88              // ignore the char
89          }
90      }
91  
92  }