using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\(([^(){},]+|\((?:[^(),]+,[^(),]+)\)|({(?:[^{}]+|(?-1))++}))(?:,(?2))+),";
string substitution = @"($1),";
string input = @"Should work for:
(1,2,3)
(1,2,3,4)
((1,2),3,4)
(((1,2,3),4),5)
({x},{y},{z})
(1,(2,3),4)
((1,2),(3,4),5)
((1,2),3,(4,5))
(1,(2,(3,4),5))
(1,(2,({3},4),5))
(1,{{1},{1,2}},3)
Should not work for:
(1,2)
(10,10)
(1,10)
((1,2),3)
(((1,1),1),1)
({0},1)
({{x},{x,y}},z)";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx