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

/
/
gm

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 = "(?m)(?'gPatSyslogPRI'<\d+>)" & @CRLF & _ "(?'gPatMesgBody'.*)" & @CRLF & _ "(?'gPatMesgBodyMin'.*?)" & @CRLF & _ "(?'gPatSyslogNGHeader'\w{3}\s+\d{1,2}\s\d{1,2}:\d{1,2}:\d{1,2}\s\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})" & @CRLF & _ "(?'gPatMon'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec|\d{1,2})" & @CRLF & _ "(?'gPatMonNum'\d{1,2})" & @CRLF & _ "(?'gPatDay'\d{1,2})" & @CRLF & _ "(?'gPatTime'\d{1,2}:\d{1,2}:\d{1,2})" & @CRLF & _ "(?'gPatYear'\d{2,4})" & @CRLF & _ "(?'gPatMSec'\d{1,3})" & @CRLF & _ "(?'gPatTimeMSec'\d{1,2}:\d{1,2}:\d{1,2}\.\d{1,3})" & @CRLF & _ "(?'gPatTimeZone'Z|UTC|[+-]\d{1,2}:?\d{2})" & @CRLF & _ "(?'gPatWeekday'Mon|Tue|Wed|Thu|Fri|Sat|Sun)" & @CRLF & _ "(?'gPatIpV4Dot'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})" & @CRLF & _ "(?'gPatIpAddr'[0-9A-Fa-f]{0,4}(?::[0-9A-Fa-f]{0,4}){1,5}:(?:\d{1,3}(?:\.\d{1,3}){3}|[0-9A-Fa-f]{0,4}(?::[0-9A-Fa-f]{0,4})?)|\d{1,3}(?:\.\d{1,3}){3})" & @CRLF & _ "(?'gPatIpPort'\d{1,5})" & @CRLF & _ "(?'gPatProto'ftp|icmp|tcp|udp|http|ip|smb|smtp|snmp|others|FTP|ICMP|UDP|TCP|HTTP|IP|SMB|SMTP|SNMP|OTHERS)" & @CRLF & _ "(?'gPatFqdn'\w+[.\w+]+)" & @CRLF & _ "(?'gPatWord'\w+)" & @CRLF & _ "(?'gPatStr'[^\s]*)" & @CRLF & _ "(?'gPatHostName'[\w.-]+)" & @CRLF & _ "(?'gPatStrComma'[^,]*)" & @CRLF & _ "(?'gPatStrLeftParen'[^\(]*)" & @CRLF & _ "(?'gPatStrRightSB'[^\]]*)" & @CRLF & _ "(?'gPatInt'\d+)" & @CRLF & _ "(?'gPatSpace'\s+)" & @CRLF & _ "(?'gPatStrEndColon'[^:]*)" & @CRLF & _ "(?'gPatStrSQ'[^']*)" & @CRLF & _ "(?'gPatStrDQ'[^']*)" & @CRLF & _ "(?'gPatSentence'\w[\s+\w]*)" Local $sString = "" 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