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  1. using System;
  2.  
  3. public class Test
  4. {
  5. 	public static void Main()
  6. 	{
  7. 		Console.WriteLine("Name.jpg: {0}", CompareWildcard("ran.jpg","*.jpg"));
  8. 	}
  9.  
  10.  
  11.  
  12. static bool CompareWildcard(string input, string mask)
  13. {
  14.     CharEnumerator ie = input.GetEnumerator();
  15.     CharEnumerator me = mask.GetEnumerator();
  16.     return CompareWildcardInternal(ie, me);
  17. }
  18.  
  19.  
  20. static bool CompareWildcardInternal(CharEnumerator ie, CharEnumerator me)
  21. {
  22.     CharEnumerator inputTryAhead;
  23.     CharEnumerator maskTryAhead;
  24.     while (me.MoveNext())
  25.     {
  26.         switch (me.Current)
  27.         {
  28.             case '?':
  29.                 if (!ie.MoveNext())
  30.                 {
  31.                     return false;
  32.                 }
  33.                 break;
  34.             case '*': // non greedy match, first try * matches nothing
  35.                 do
  36.                 {
  37.                     inputTryAhead = (CharEnumerator)(ie.Clone());
  38.                     maskTryAhead = (CharEnumerator)(me.Clone());
  39.                     if (CompareWildcardInternal(inputTryAhead,maskTryAhead))
  40.                     {
  41.                         return true;
  42.                     }
  43.                 } while (ie.MoveNext());
  44.                 return false;
  45.             case '\\':
  46.                 me.MoveNext();
  47.                 goto default;
  48.             default:
  49.                 if (!ie.MoveNext() || ie.Current != me.Current)
  50.                     return false;
  51.                 break;
  52.         }
  53.     }
  54.  
  55.     return !ie.MoveNext(); 
  56. }
  57.  
  58.  
  59. }
Success #stdin #stdout 0.03s 34816KB
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Standard input is empty
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Name.jpg: True
https://ideone.com/VUDFIw
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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