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Java > Open Source Codes > org > hsqldb > rowio > RowOutputTextQuoted


1 /* Copyright (c) 2001-2005, The HSQL Development Group
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * Redistributions of source code must retain the above copyright notice, this
8  * list of conditions and the following disclaimer.
9  *
10  * Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  *
14  * Neither the name of the HSQL Development Group nor the names of its
15  * contributors may be used to endorse or promote products derived from this
16  * software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
22  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30
31
32 package org.hsqldb.rowio;
33
34 import org.hsqldb.lib.StringConverter;
35
36 /**
37  * This class quotes strings only if they contain the quote character or
38  * the separator for the field. The quote character is doubled.
39  *
40  * @author sqlbob@users (RMP)
41  * @version 1.8.0
42  * @since 1.7.0
43  */
44 public class RowOutputTextQuoted extends RowOutputText {
45
46     public RowOutputTextQuoted(String JavaDoc fieldSep, String JavaDoc varSep,
47                                String JavaDoc longvarSep, boolean allQuoted,
48                                String JavaDoc encoding) {
49         super(fieldSep, varSep, longvarSep, allQuoted, encoding);
50     }
51
52     protected String JavaDoc checkConvertString(String JavaDoc s, String JavaDoc sep) {
53
54         if (allQuoted || s.length() == 0 || s.indexOf('\"') != -1
55                 || (sep.length() > 0 && s.indexOf(sep) != -1)
56                 || hasUnprintable(s)) {
57             s = StringConverter.toQuotedString(s, '\"', true);
58         }
59
60         return s;
61     }
62
63     private boolean hasUnprintable(String JavaDoc s) {
64
65         for (int i = 0, len = s.length(); i < len; i++) {
66             if (Character.isISOControl(s.charAt(i))) {
67                 return true;
68             }
69         }
70
71         return false;
72     }
73 }
74
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