Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

~
~
gx

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?x) "[^"\\]*(?s:\\.[^"\\]*)*+"" & @CRLF & _ " (*SKIP)(*F)" & @CRLF & _ "|" & @CRLF & _ " /" & @CRLF & _ " (?:" & @CRLF & _ " / .*" & @CRLF & _ " |" & @CRLF & _ " \* [^*]* (?: \*+(?!/) [^*]* )*+ (?:\*/)?" & @CRLF & _ " )" Local $sString = "/* toto****to ****/ /****/ " & @CRLF & _ "char * foo = "//don't\" // remove" " // really please don't"; // But remove this ha ha! // along with this!" & @CRLF & _ "" & @CRLF & _ "char *bad_regex_strategy = "\"good luck\" // \"counting the \"quotes\"" "//\"//"; // \"ha""" \" " \" ha ha\" ha /// "\;"ha'" & @CRLF & _ "/*" & @CRLF & _ "and then imagine a copy of that entire line commented out on the next line of source." & @CRLF & _ "I'd question the entire task and see if there isn't a C source manipulation library you should be using instead. ?" & @CRLF & _ " BaseZen 2 hours ago Is it? So when I have the choise between doing this by regex or final state machine, u recommend the FSM, right?" & @CRLF & _ " :/ ? user3457394 2 hours ago" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($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