001 // Copyright 2004, 2005 The Apache Software Foundation 002 // 003 // Licensed under the Apache License, Version 2.0 (the "License"); 004 // you may not use this file except in compliance with the License. 005 // You may obtain a copy of the License at 006 // 007 // http://www.apache.org/licenses/LICENSE-2.0 008 // 009 // Unless required by applicable law or agreed to in writing, software 010 // distributed under the License is distributed on an "AS IS" BASIS, 011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 // See the License for the specific language governing permissions and 013 // limitations under the License. 014 015 package org.apache.tapestry.util.text; 016 017 /** 018 * Matches a whitespace character. 019 * 020 * @author mb 021 * @since 4.0 022 */ 023 public class WhitespaceMatcher implements ICharacterMatcher 024 { 025 private boolean _matchEndLines; 026 027 /** 028 * Creates an object that matches all whitespace characters, line terminators included 029 */ 030 public WhitespaceMatcher() 031 { 032 this(true); 033 } 034 035 /** 036 * Creates an object that matches whitespace characters. 037 * Line terminators are included only if this is specified. 038 * 039 * @param matchEndLines match line terminators as well 040 */ 041 public WhitespaceMatcher(boolean matchEndLines) 042 { 043 _matchEndLines = matchEndLines; 044 } 045 046 /** 047 * Matches whitespace characters. Line terminators may be matched 048 * depending on the constructor used to create the object. 049 * 050 * @see org.apache.tapestry.util.text.ICharacterMatcher#matches(char) 051 */ 052 public boolean matches(char ch) 053 { 054 if (!_matchEndLines) 055 if (ch == '\n' || ch == '\r') 056 return false; 057 058 return Character.isWhitespace(ch); 059 } 060 }