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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 QuoteHandler extends AbstractPipelineComponent {
34  
35      /**
36       * Logger for this class
37       */
38      private static final Logger logger = LoggerFactory.getLogger(QuoteHandler.class);
39  
40      public static final char QUOTE_CHAR = '"';
41  
42  
43      
44      private QuoteHandler() {
45      }
46  
47      public static final PipelineComponent ACCEPT() {
48          logger.debug("ACCEPT() - start");
49  
50          return createPipelineComponent(new QuoteHandler(), new ACCEPT());
51      }
52  
53      public static final PipelineComponent IGNORE() {
54          logger.debug("IGNORE() - start");
55  
56          return createPipelineComponent(new QuoteHandler(), new IGNORE());
57      }
58  
59      public static final PipelineComponent QUOTE() {
60          logger.debug("QUOTE() - start");
61  
62          return createPipelineComponent(new QuoteHandler(), new QUOTE());
63      }
64  
65      public static final PipelineComponent UNQUOTE() {
66          logger.debug("UNQUOTE() - start");
67  
68          return createPipelineComponent(new QuoteHandler(), new UNQUOTE());
69      }
70  
71      public boolean canHandle(char c) throws IllegalInputCharacterException {
72          if(logger.isDebugEnabled())
73              logger.debug("canHandle(c={}) - start", String.valueOf(c));
74  
75          if (c == QUOTE_CHAR) {
76              return true;
77          }
78          return false;
79      }
80  
81  
82      static protected class QUOTE extends Helper {
83  
84          /**
85           * Logger for this class
86           */
87          private static final Logger logger = LoggerFactory.getLogger(QUOTE.class);
88  
89          public void helpWith(char c) {
90              if(logger.isDebugEnabled())
91                  logger.debug("helpWith(c={}) - start", String.valueOf(c));
92  
93              getHandler().getPipeline().putFront(SeparatorHandler.ACCEPT());
94              getHandler().getPipeline().putFront(WhitespacesHandler.ACCEPT());
95              getHandler().getPipeline().putFront(IsAlnumHandler.ACCEPT());
96              getHandler().getPipeline().putFront(QuoteHandler.UNQUOTE());
97              getHandler().getPipeline().putFront(EscapeHandler.ESCAPE());
98              // ignore the char
99          }
100 
101     }
102 
103     static protected class UNQUOTE extends Helper {
104 
105         /**
106          * Logger for this class
107          */
108         private static final Logger logger = LoggerFactory.getLogger(UNQUOTE.class);
109 
110         public void helpWith(char c) {
111             if(logger.isDebugEnabled())
112                 logger.debug("helpWith(c={}) - start", String.valueOf(c));
113 
114             try {
115                 getHandler().getPipeline().removeFront();
116                 getHandler().getPipeline().removeFront();
117                 getHandler().getPipeline().removeFront();
118                 getHandler().getPipeline().removeFront();
119                 getHandler().getPipeline().removeFront();
120             } catch (PipelineException e) {
121                 throw new RuntimeException(e.getMessage());
122             }
123             // ignore the char
124         }
125 
126         public boolean allowForNoMoreInput() {
127             logger.debug("allowForNoMoreInput() - start");
128 
129             throw new IllegalStateException("end of input while waiting for a closing quote");
130         }
131     }
132 
133 }