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

/
/
gmix

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 $sRegex = "(?mix)^ # Start of version string" & @CRLF & _ "\s* # Ignore leading whitespace" & @CRLF & _ "(?:v\.?)? # Optional "v" or "v." before the version" & @CRLF & _ "(?<major>\d+) \. (?<minor>\d+) \. (?<patch>\d+) # MAJOR.MINOR.PATCH" & @CRLF & _ "(?:- # Pre-release versions start with '-'" & @CRLF & _ "(?<pre> # Capture the pre-release identifier(s)" & @CRLF & _ "(?: # The PR rules are annoyingly tight" & @CRLF & _ "[0-9A-Za-z-] # No leading `0`, but a `0` on its own is fine" & @CRLF & _ "| # More than one character..." & @CRLF & _ "[1-9A-Za-z-][0-9A-Za-z-]* # ...means no leading zero" & @CRLF & _ ") # That's the FIRST pre-release identifier" & @CRLF & _ "(?: # Multiple are allowed..." & @CRLF & _ "\. # ...dot-separated..." & @CRLF & _ "(?: # ...with the same rules as above" & @CRLF & _ "[0-9A-Za-z-]" & @CRLF & _ "|" & @CRLF & _ "[1-9A-Za-z-][0-9A-Za-z-]*" & @CRLF & _ ")" & @CRLF & _ ")* # Of course, you can also have just the one" & @CRLF & _ ") # End name-cap group `pre`" & @CRLF & _ ")? # End non-cap group encompassing the leading `-` and the identifiers" & @CRLF & _ "(?: # Built metadata is SIMILAR, but with two differences:" & @CRLF & _ "\+ # Difference one: starts with `+`" & @CRLF & _ "(?<meta>" & @CRLF & _ "[0-9A-Za-z-]+ # Difference two: leading `0` is allowed, so the match rule is simpler" & @CRLF & _ "(?:\.[0-9A-Za-z-]+)* # Same dot-delim repetition" & @CRLF & _ ") # End name-cap group `meta`" & @CRLF & _ ")? # End non-cap group encompassing leading `+` and identifiers" & @CRLF & _ "\s* # Ignore trailing whitespace" & @CRLF & _ "$ # End version string" Local $sString = "1.0.0" & @CRLF & _ "1.0.0-alpha" & @CRLF & _ "1.0.0-alpha.1" & @CRLF & _ "1.0.0-0.3.7" & @CRLF & _ "1.0.0-x.7.z.92" & @CRLF & _ "1.0.0-alpha+001" & @CRLF & _ "1.0.0+20130313144700" & @CRLF & _ "1.0.0-beta+exp.sha.5114f85" 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