1 /*
2 * Copyright (c) 2001-2004,
3 * RedVerst Group, ISP RAS http://www.ispras.ru
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * 3. The names "ATP", "TreeDL", "RedVerst", "ISP RAS"
17 * may not be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 package com.unitesk.atp.text.filters;
33
34 /***
35 * The filter that receives strings containing line separators
36 * splits them into strings without line separators and line separatos
37 * and passes all to the client.
38 *
39 * @author <A href="mailto:demakov@ispras.ru">Alexey Demakov</A>
40 * @version $Id: LineSplitFilter.java,v 1.1 2004/10/09 06:36:40 all-x Exp $
41 */
42 public class LineSplitFilter extends Filter
43 {
44 /***
45 * Constructs line split filter.
46 *
47 * @param client the client of this filter
48 */
49 public LineSplitFilter( TextReceiver client )
50 {
51 super( client );
52 }
53
54 /***
55 * Receives a string possible containing line separators.
56 * Splits it to strings without line separators and line separators
57 * and passes them to the client.
58 *
59 * @param s the string to split
60 * @throws NullPointerException
61 * if <code>s</code> is <code>null</code>
62 */
63 public void txt( String s )
64 {
65 int l = s.length();
66
67 for( int i = 0; i < l; )
68 {
69 int j = s.indexOf( endl, i );
70 if( j < 0 ) j = l;
71 if( i < j )
72 {
73 client.txt( s.substring( i, j ) );
74 i = j;
75 } else {
76 client.nl();
77 i += endl.length();
78 }
79 }
80 }
81
82 //--------------------------------------------------------------------------
83 // implementation
84
85 /***
86 * The line separator
87 */
88 private static final String endl = System.getProperty( "line.separator" );
89 }