ekit/com/hexidec/util/PatternReplacer.java

   1 package com.hexidec.util;
   2
   3 /*
   4 GNU General Public License
   5
   6 PatternReplacer - Simple Pattern Replacement Class
   7 Copyright (C) 2001  Howard A Kistler
   8
   9 This program is free software; you can redistribute it and/or
  10 modify it under the terms of the GNU General Public License
  11 as published by the Free Software Foundation; either version 2
  12 of the License, or (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22 */
  23
  24 import java.util.Hashtable;
  25
  26 /** PatternReplacer
  27   * Utility class for replacing patterns in script strings
  28   *
  29   * @author Howard Kistler
  30   * @version 0.2
  31   *
  32   * VERSION HISTORY
  33   * 0.1 (04/04/2001) - initial creation (04/04/2001)
  34   * 0.2 (04/09/2001) - separation into own class (04/09/2001)
  35   */
  36
  37 public class PatternReplacer {
  38
  39         private Hashtable patternTable;
  40
  41         public PatternReplacer(Hashtable patterns) {
  42                 patternTable = patterns;
  43         }
  44
  45         public PatternReplacer() {
  46                 patternTable = new Hashtable();
  47         }
  48
  49         public void addPattern(String pattern, String replacement) {
  50                 if(patternTable.containsKey(pattern)) {
  51                         patternTable.remove(pattern);
  52                 }
  53                 patternTable.put(pattern, replacement);
  54         }
  55
  56         public void removePattern(String pattern) {
  57                 if(patternTable.containsKey(pattern)) {
  58                         patternTable.remove(pattern);
  59                 }
  60         }
  61
  62         public String getPattern(String pattern) {
  63                 if(patternTable.containsKey(pattern)) {
  64                         return (String)(patternTable.get(pattern));
  65                 }
  66                 return null;
  67         }
  68
  69         public void clearPatterns() {
  70                 patternTable.clear();
  71         }
  72
  73         public int patternCount() {
  74                 return patternTable.size();
  75         }
  76
  77 }
  78