Lucene.Net  3.0.3
Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
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StringUtils.cs
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1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
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14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 using System;
19 using System.Collections.Generic;
20 
21 namespace Lucene.Net.Search.Vectorhighlight
22 {
23  public static class StringUtils
24  {
25  /// <summary>
26  /// Check if the termToMatch is a match for the term, considering the use of a wildcards.
27  /// </summary>
28  public static Boolean TermStringMatch(String term, String termToMatch)
29  {
30  if (term[0] == '*' || term[0] == '?')
31  throw new NotSupportedException("Unable to do matching with wildcard at the beginning");
32 
33  if (term[term.Length - 1] == '*')
34  {
35  //Wildcard at the end
36  if (termToMatch.Length < term.Length - 1) return false;
37  for (int i = 0; i < term.Length - 1; i++)
38  {
39  if (termToMatch[i] != term[i]) return false;
40  }
41  return true;
42  }
43  return term.Equals(termToMatch);
44  }
45 
46  public static Boolean AnyTermMatch(IList<String> terms, String term)
47  {
48  for (int i = 0; i < terms.Count; i++)
49  {
50  if (StringUtils.TermStringMatch(terms[i], term))
51  return true;
52  }
53  return false;
54  }
55  }
56 }