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
No Match

@"
"
gmx

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 = "(?mx)\s*" & @CRLF & _ " (" & @CRLF & _ " (?<type>int(?:\s+long|\s+short)?|double(?:\s+long)?|" & @CRLF & _ " long(?:\s+int|\s+double)?|short(?:\s+int)?|float|char)" & @CRLF & _ " |" & @CRLF & _ " (?<error>\w+|\w+\s*\,)" & @CRLF & _ " )" & @CRLF & _ " \s+" & @CRLF & _ " (?:" & @CRLF & _ " (?:" & @CRLF & _ " (?:" & @CRLF & _ " (?<error>int|double|float|char|long|short|[^,;a-zA-Z_].+?|[^,;]+?(?:\s+\w+?)+)" & @CRLF & _ " |" & @CRLF & _ " (?<id>[a-zA-Z_][a-zA-Z_0-9]*)" & @CRLF & _ " )" & @CRLF & _ " (?:\s*\[\s*[1-9]\d*\s*\])*" & @CRLF & _ " )" & @CRLF & _ " \s*" & @CRLF & _ " (?:\,\s*|(?=\;))" & @CRLF & _ " )+" & @CRLF & _ "\s*\;\s*" Local $sString = "int " & @CRLF & _ " abv, cde, doub1lel,ded, cto, int1;" & @CRLF & _ "float ng23423, _ga45, " & @CRLF & _ "astories; " & @CRLF & _ "int af , f;" & @CRLF & _ "int a, b, c;int short alt ;" & @CRLF & _ "long double fgd [ 1 ], [1] , wef ;" & @CRLF & _ "char _a[1], fi [" & @CRLF & _ " 3 " & @CRLF & _ " ] [ 10] [ 4 ] ,g[1];int qw;" 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