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source: branches/symbreg-factors-2650/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Search/SearchStrategyFactory.cs @ 14232

Last change on this file since 14232 was 11700, checked in by jkarder, 10 years ago

#2077: created branch and added first version

File size: 2.8 KB
Line 
1// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
2//
3// Permission is hereby granted, free of charge, to any person obtaining a copy of this
4// software and associated documentation files (the "Software"), to deal in the Software
5// without restriction, including without limitation the rights to use, copy, modify, merge,
6// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
7// to whom the Software is furnished to do so, subject to the following conditions:
8//
9// The above copyright notice and this permission notice shall be included in all copies or
10// substantial portions of the Software.
11//
12// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
13// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
15// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
16// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
17// DEALINGS IN THE SOFTWARE.
18
19using System;
20using System.Text;
21using System.Text.RegularExpressions;
22using System.Windows.Controls;
23using ICSharpCode.AvalonEdit.Document;
24
25namespace ICSharpCode.AvalonEdit.Search
26{
27  /// <summary>
28  /// Provides factory methods for ISearchStrategies.
29  /// </summary>
30  public static class SearchStrategyFactory
31  {
32    /// <summary>
33    /// Creates a default ISearchStrategy with the given parameters.
34    /// </summary>
35    public static ISearchStrategy Create(string searchPattern, bool ignoreCase, bool matchWholeWords, SearchMode mode)
36    {
37      if (searchPattern == null)
38        throw new ArgumentNullException("searchPattern");
39      RegexOptions options = RegexOptions.Compiled | RegexOptions.Multiline;
40      if (ignoreCase)
41        options |= RegexOptions.IgnoreCase;
42     
43      switch (mode) {
44        case SearchMode.Normal:
45          searchPattern = Regex.Escape(searchPattern);
46          break;
47        case SearchMode.Wildcard:
48          searchPattern = ConvertWildcardsToRegex(searchPattern);
49          break;
50      }
51      try {
52        Regex pattern = new Regex(searchPattern, options);
53        return new RegexSearchStrategy(pattern, matchWholeWords);
54      } catch (ArgumentException ex) {
55        throw new SearchPatternException(ex.Message, ex);
56      }
57    }
58   
59    static string ConvertWildcardsToRegex(string searchPattern)
60    {
61      if (string.IsNullOrEmpty(searchPattern))
62        return "";
63     
64      StringBuilder builder = new StringBuilder();
65     
66      foreach (char ch in searchPattern) {
67        switch (ch) {
68          case '?':
69            builder.Append(".");
70            break;
71          case '*':
72            builder.Append(".*");
73            break;
74          default:
75            builder.Append(Regex.Escape(ch.ToString()));
76            break;
77        }
78      }
79     
80      return builder.ToString();
81    }
82  }
83}
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