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  1. using System;
  2. using System.Text.RegularExpressions;
  3. using System.Linq;
  4.  
  5. public class Test
  6. {
  7. 	public static void Main()
  8. 	{
  9. 		var s = "The $quick$ brown '$$fox$$' jumps $$over$$ the '$lazy$' dog";
  10. 		var p = @"(?x)
  11. 		             (?<quote>'[^'\\]*(?:\\.[^\\']*)*') # A single quoted string literal pattern
  12. 		              |                                 # or
  13. 		             (?<!\$)               # no $ immediately to the left
  14. 		                (\${1,2})          # 1 or 2 $ symbols (Group 1)
  15. 		                 [^$]+             # 1 or more non-$ chars
  16. 		                \1                 # Same value as in Group 1 (backreference)
  17. 		             (?!\$)                # No $ immediately to the left of the current location
  18. 		             ";            
  19. 		var result = Regex.Replace(s, p, m =>
  20. 			m.Groups["quote"].Success ? m.Groups["quote"].Value : "substituted");
  21. 		Console.WriteLine(result);
  22. 	}
  23. }
Success #stdin #stdout 0.04s 133824KB
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Standard input is empty
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The substituted brown '$$fox$$' jumps substituted the '$lazy$' dog
https://ideone.com/vX8W9q
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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