#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?i)@if(?:\s+|)\(([\s\S]*?)\)([\s\S]*?)+@endif"
Local $sString = "<div class="wrapper">" & @CRLF & _
" <p>Parágrafo fora dos ifs.</p>" & @CRLF & _
"" & @CRLF & _
" @if (true)" & @CRLF & _
" <div>Oi?</div>" & @CRLF & _
" @if (false)" & @CRLF & _
" <span>Não devo ser renderizado</span>" & @CRLF & _
" @endif" & @CRLF & _
" @endif" & @CRLF & _
"" & @CRLF & _
" <p>Estou entre os if's</p>" & @CRLF & _
"" & @CRLF & _
" @if (true)" & @CRLF & _
" <div>estou em outro if</div>" & @CRLF & _
" @endif" & @CRLF & _
"</div>"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH)
; Present the entire match result
_ArrayDisplay($aArray, "Result")
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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm