KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tapestry > util > text > WhitespaceMatcher


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.util.text;
16
17 /**
18  * Matches a whitespace character.
19  *
20  * @author mb
21  * @since 4.0
22  */
23 public class WhitespaceMatcher implements ICharacterMatcher
24 {
25     private boolean _matchEndLines;
26     
27     /**
28      * Creates an object that matches all whitespace characters, line terminators included
29      */
30     public WhitespaceMatcher()
31     {
32         this(true);
33     }
34     
35     /**
36      * Creates an object that matches whitespace characters.
37      * Line terminators are included only if this is specified.
38      *
39      * @param matchEndLines match line terminators as well
40      */
41     public WhitespaceMatcher(boolean matchEndLines)
42     {
43         _matchEndLines = matchEndLines;
44     }
45     
46     /**
47      * Matches whitespace characters. Line terminators may be matched
48      * depending on the constructor used to create the object.
49      *
50      * @see org.apache.tapestry.util.text.ICharacterMatcher#matches(char)
51      */
52     public boolean matches(char ch)
53     {
54         if (!_matchEndLines)
55             if (ch == '\n' || ch == '\r')
56                 return false;
57         
58         return Character.isWhitespace(ch);
59     }
60 }
Popular Tags