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 015package org.apache.tapestry.util.text; 016 017/** 018 * An object for matching a set of provided ASCII characters. 019 * 020 * @author mb 021 * @since 4.0 022 */ 023public class AsciiCharacterMatcher implements ICharacterMatcher 024{ 025 private boolean[] _charMap; 026 027 /** 028 * Create a new ASCII character matcher for identifying the set of provided ASCII characters 029 * 030 * @param chars the character that this matcher should identify 031 */ 032 public AsciiCharacterMatcher(String chars) { 033 _charMap = new boolean[128]; 034 for (int i = 0; i < chars.length(); i++) { 035 char ch = chars.charAt(i); 036 if (ch > 127) 037 continue; 038 _charMap[ch] = true; 039 } 040 } 041 042 /** 043 * Match the characters provided in the constructor 044 * 045 * @see org.apache.tapestry.util.text.ICharacterMatcher#matches(char) 046 */ 047 public boolean matches(char ch) 048 { 049 if (ch > 127) 050 return false; 051 return _charMap[ch]; 052 } 053}