Regular Expressions 101

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  • Unit Tests (4)

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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

/
/
gm

Test String

Substitution

Processing...

Code Generator

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "(?m)^([ \t]*)import [*] as (\w+) from (?:(['])((?:(?:\.)+|[^\n\r'\\]+)+)[']|(["])((?:(?:\.)+|[^\n\r'\\]+)+)["])" Local $sString = "import * as Atblock from "./atblock"" & @CRLF & _ "import * as Atrule from "./atrule"" & @CRLF & _ "import * as Supports from "./supports"" & @CRLF & _ "" & @CRLF & _ "import * as Node from './node';" & @CRLF & _ "import * as Root from './root'" & @CRLF & _ "import Null from './null'" & @CRLF & _ "import * as Each from './each'" & @CRLF & _ "import * as If from './if'" & @CRLF & _ "import * as Call from './call'" & @CRLF & _ "import * as UnaryOp from './unaryop'" & @CRLF & _ "import * as BinOp from './binop'" & @CRLF & _ "import * as Ternary from './ternary'" & @CRLF & _ "import * as Block from './block'" & @CRLF & _ "import * as Unit from './unit'" & @CRLF & _ "import * as String from './string'" & @CRLF & _ "import * as HSLA from './hsla'" & @CRLF & _ "import * as RGBA from './rgba'" & @CRLF & _ "import * as Ident from './ident'" & @CRLF & _ "import * as Group from './group'" & @CRLF & _ "import * as Literal from './literal'" & @CRLF & _ "import * as Boolean from './boolean'" & @CRLF & _ "import * as Return from './return'" & @CRLF & _ "import * as Media from './media'" & @CRLF & _ "import * as QueryList from './query-list'" & @CRLF & _ "import * as Query from './query'" & @CRLF & _ "import * as Feature from './feature'" & @CRLF & _ "import * as Params from './params'" & @CRLF & _ "import * as Comment from './comment'" & @CRLF & _ "import * as Keyframes from './keyframes'" & @CRLF & _ "import * as Member from './member'" & @CRLF & _ "import * as Charset from './charset'" & @CRLF & _ "import * as Namespace from './namespace'" & @CRLF & _ "import * as Import from './import'" & @CRLF & _ "import * as Extend from './extend'" & @CRLF & _ "import * as Object from './object'" & @CRLF & _ "import * as Function from './function'" & @CRLF & _ "import * as Property from './property'" & @CRLF & _ "import * as Selector from './selector'" & @CRLF & _ "import * as Expression from './expression'" & @CRLF & _ "import * as Arguments from './arguments'" & @CRLF & _ "import * as Atblock from './atblock'" & @CRLF & _ "import * as Atrule from './atrule'" & @CRLF & _ "import * as Supports from './supports'" & @CRLF & _ "" Local $sSubst = "$1import $2 from $3$5$6$4$3$5" Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst) MsgBox($MB_SYSTEMMODAL, "Result", $sResult)

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