using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @" (?=
({%.if
(?:
(?>
(?:
(?! {%.if | endif.%}) .
)+
)*
| (?1)
)*
endif.%})
)
(?1)";
string input = @"{% if something %}
----------------
{% if something %}
DEEPER
{% endif %}
{% irgendwas %}
{% if something %}
DEEPER
{% if something %}
DEEPEST
{% endif %}
DEEPER
{% endif %}
---- endif ----
{% endif %}
kjafgnkajngkjalkjg
{% if something %}
++++++++++++++++
{% if something %}
DEEPER
{% endif %}
{% irgendwas %}
{% if something %}
DEEPER
{% if something %}
DEEPEST
{% endif %}
DEEPER
{% endif %}
++++ endif ++++
{% endif %}
";
RegexOptions options = RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline | RegexOptions.Multiline;
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