001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
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015 * KIND, either express or implied. See the License for the *
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018 ****************************************************************/
019
020 package org.apache.james.jspf.parser;
021
022 import org.apache.james.jspf.terms.Configuration;
023
024 import java.util.regex.Matcher;
025
026 /**
027 *
028 * Provides a MatchResult view of a subset of another MatchResult
029 */
030 public class MatcherBasedConfiguration implements Configuration {
031
032 private Matcher wrapped;
033
034 private int start;
035
036 private int count;
037
038 /**
039 * @param w
040 * Original MatchResult
041 * @param start
042 * the position where the subresult start
043 * @param count
044 * number of groups part of the subresult
045 */
046 public MatcherBasedConfiguration(Matcher w, int start, int count) {
047 this.wrapped = w;
048 this.count = count;
049 this.start = start;
050 }
051
052 /**
053 * @see org.apache.james.jspf.terms.Configuration#group(int)
054 */
055 public String group(int arg0) {
056 return wrapped.group(arg0 + start);
057 }
058
059 /**
060 * @see org.apache.james.jspf.terms.Configuration#groupCount()
061 */
062 public int groupCount() {
063 return count;
064 }
065
066 }