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

/
/
gxs

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 = "(?xs)@font-face\s* # Match @font-face and some spaces" & @CRLF & _ "( # Start group 1" & @CRLF & _ " \{ # Match {" & @CRLF & _ " (?: # A non-capturing group" & @CRLF & _ " [^{}]+ # Match anything except {} one or more times" & @CRLF & _ " | # Or" & @CRLF & _ " (?1) # Recurse/rerun the expression of group 1" & @CRLF & _ " )* # Repeat 0 or more times" & @CRLF & _ " \} # Match }" & @CRLF & _ ") # End group 1" & @CRLF & _ "(*SKIP)(*FAIL) # Skip it" & @CRLF & _ "| # Or" & @CRLF & _ "url\s*\( # Match url, optionally some whitespaces and then (" & @CRLF & _ "\s* # Match optionally some whitespaces" & @CRLF & _ "("|'|) # It seems that the quotes are optional according to http://www.w3.org/TR/CSS2/syndata.html#uri" & @CRLF & _ "(?!["']?(?:https?://|ftp://)) # Put your negative-rules here (do not match url's with http, https or ftp)" & @CRLF & _ "(?:[^\\]|\\.)*? # Match anything except a backslash or backslash and a character zero or more times ungreedy" & @CRLF & _ "\2 # Match what was matched in group 2" & @CRLF & _ "\s* # Match optionally some whitespaces" & @CRLF & _ "\) # Match )" Local $sString = ".someclass0 {" & @CRLF & _ " background: url('http://images/someimage.png') no-repeat;" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ "@font-face {" & @CRLF & _ " font-family: 'FontAwesome';" & @CRLF & _ " src: url("fonts/fontawesome-webfont.eot?v=4.0.3");" & @CRLF & _ " src: url("fonts/fontawesome-webfont.eot?#iefix&v=4.0.3") format("embedded-opentype"), url("fonts/fontawesome-webfont.woff?v=4.0.3") format("woff"), url("fonts/fontawesome-webfont.ttf?v=4.0.3") format("truetype"), url("fonts/fontawesome-webfont.svg?v=4.0.3#fontawesomeregular") format("svg");" & @CRLF & _ " font-weight: normal;" & @CRLF & _ " font-style: normal;" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ ".someclass1 {" & @CRLF & _ " background: url('images/someimage.png') no-repeat;" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ ".someclass2 {" & @CRLF & _ " background: url("images/someimage.png") no-repeat;" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ ".someclass3 {" & @CRLF & _ " background: url(images/someimage.png) no-repeat;" & @CRLF & _ "}" 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