using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?m)^I[ ]want[ ]to[ ]cook[ ]something(?=[ ]|$)(?<Order>(?:(?<with>\b(?:but[ ])?with[ ](?:(?!(?:\b(?:but[ ])?with(?:in|out)?\b)).)*)|(?<without>\b(?:but[ ])?without[ ](?:(?!(?:\b(?:but[ ])?with(?:in|out)?\b)).)*)|(?<time>\bwithin[ ](?<duration>.+)[ ]minutes[ ]?)|(?<unknown>(?:(?!(?:\b(?:but[ ])?with(?:in|out)?\b)).)+))*)$";
string input = @"I want to cook something
I want to cook something with chicken and cheese
I want to cook something with chicken but without onions
I want to cook something without onions but with chicken and cheese
I want to cook something with candy but without nuts within 30 minutes
I want to cook something assgbh asdf";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
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