using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)
(?<Collection>
(?:(?&GameTree)(?:\s*(?&GameTree))*)?
)
(?<GameTree>
\(\s*
(?&RootNode)\s*
(?&NodeSequence)\s*
(?:(?&Tail)(?:\s*(?&Tail))*)?\s*
\)
)
(?<Tail>
\(\s*
(?&NodeSequence)\s*
(?:(?&Tail)(?:\s*(?&Tail))*)?\s*
\)
)
(?<NodeSequence>
(?:(?&Node)(?:\s*(?&Node))*)?
)
(?<RootNode> (?&Node) )
(?<Node> ;\s*(?:(?&Property)(?:\s*(?&Property))*)? )
(?<Property>
(?&PropIdent)\s*
(?&PropValue)(?:\s*(?&PropValue))*
)
(?<PropIdent> [A-Z](?:\s*[A-Z])* )
(?<PropValue> \[ (?&Value) \])
(?<Value> (?:\\\]|[^\]])* )
)
(?&Property)";
string input = @"GM[1]FF[4]CA[UTF-8]AP[Sabaki:0.52.2]KM[6.5]SZ[19]DT[2023-12-25]";
RegexOptions options = RegexOptions.IgnorePatternWhitespace;
foreach (Match m in Regex.Matches(input, pattern, options))
{
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