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
Processing...

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) " & @CRLF & _ " (?: # ----------" & @CRLF & _ " (?= (?&V_Obj) ) # Assertion : Must be a Valid JSON Object" & @CRLF & _ " {" & @CRLF & _ " | # or ," & @CRLF & _ " (?! ^ ) # Here we are in a valid JSON Object or Array" & @CRLF & _ " \G # Continuation anchor, where we last left off" & @CRLF & _ " (?&Sep_Obj) \s* # Array Separator" & @CRLF & _ " ) # ----------" & @CRLF & _ " " & @CRLF & _ " (?: (?&V_KeyVal) (?&Sep_Obj) )*? # Drill down to array or string value" & @CRLF & _ " " & @CRLF & _ " \s* \K # Stop recording" & @CRLF & _ " ( (?&Str) ) # (1), The key" & @CRLF & _ " \s* : \s* " & @CRLF & _ " " & @CRLF & _ " (?| # Branch reset" & @CRLF & _ " \[ # Array values = string, numb, bool, or null" & @CRLF & _ " ( # (2), Array Contents" & @CRLF & _ " (?:" & @CRLF & _ " \s* " & @CRLF & _ " (?:" & @CRLF & _ " (?&Numb) # Numbers" & @CRLF & _ " | (?> true | false | null ) # Boolean and null" & @CRLF & _ " | (?&Str) # String" & @CRLF & _ " )" & @CRLF & _ " (?&Sep_Ary) # Ary separator" & @CRLF & _ " )+" & @CRLF & _ " )" & @CRLF & _ " \s* \] " & @CRLF & _ " | # Or," & @CRLF & _ " ( # (2), A Non-Ary, Non-Obj value" & @CRLF & _ " (?&Numb) # Numbers" & @CRLF & _ " | (?> true | false | null ) # Boolean and null" & @CRLF & _ " | (?&Str) # String" & @CRLF & _ " )" & @CRLF & _ " )" & @CRLF & _ " " & @CRLF & _ " # JSON functions - NoErDet" & @CRLF & _ " # ---------------------------------------------" & @CRLF & _ " (?(DEFINE)(?<Sep_Ary>\s*(?:,(?!\s*[}\]])|(?=\])))(?<Sep_Obj>\s*(?:,(?!\s*[}\]])|(?=})))(?<Str>(?>"[^\\"]*(?:\\[\s\S][^\\"]*)*"))(?<Numb>(?>[+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?|(?:[eE][+-]?\d+)))(?<V_KeyVal>(?>\s*(?&Str)\s*:\s*(?&V_Value)\s*))(?<V_Value>(?>(?&Numb)|(?>true|false|null)|(?&Str)|(?&V_Obj)|(?&V_Ary)))(?<V_Ary>\[(?>\s*(?&V_Value)(?&Sep_Ary))*\s*\])(?<V_Obj>{(?>(?&V_KeyVal)(?&Sep_Obj))*\s*}))" & @CRLF & _ "" Local $sString = "{" & @CRLF & _ " "key1":" & @CRLF & _ " ["value1","value2","value3","value4","value5",3.14,null]," & @CRLF & _ " "key_complex_skip":" & @CRLF & _ " ["valuec", {"subkey": [null,null,34.123] } ]," & @CRLF & _ " "key2":" & @CRLF & _ " null," & @CRLF & _ " "key3":" & @CRLF & _ " "value8"" & @CRLF & _ "}" & @CRLF & _ "" & @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