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

/
/
g

Test String

Substitution

Processing...

Code Generator

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "(?:(?!<(?:field|exclGroup)(?!\w)(?>"[\S\s]*?"|'[\S\s]*?'|(?:(?!\/>)[^>])?)+>)[\S\s])*(?><(field|exclGroup)(?=(?:[^>"']|"[^"]*"|'[^']*')*?\sname\s*=\s*(?:(['"])([\S\s]*?)\2))\s+(?>"[\S\s]*?"|'[\S\s]*?'|(?:(?!\/>)[^>])?)+>)(?:(?&core)|)<\/\1\s*>(?:(?!<(?:field|exclGroup)(?!\w)(?>"[\S\s]*?"|'[\S\s]*?'|(?:(?!\/>)[^>])?)+>)[\S\s])*(?(DEFINE)(?<core>(?>(?><([\w:]+)(?>"[\S\s]*?"|'[\S\s]*?'|(?:(?!\/>)[^>])?)+>)(?:(?&core)|)<\/\5\s*>|(?!<\/[\w:]+\s*>)(?>[\S\s]))+))" Local $sString = "<field xmlns="http://www.xfa.org/schema/xfa-template/2.8/" y="0in" x="0.343mm" w="8.881pt" h="9.108pt" name="detcon_recreation_only">" & @CRLF & _ " <ui>" & @CRLF & _ " <checkButton size="8.881pt">" & @CRLF & _ " <border>" & @CRLF & _ " <edge stroke="lowered"/>" & @CRLF & _ " <fill/>" & @CRLF & _ " </border>" & @CRLF & _ " </checkButton>" & @CRLF & _ " </ui>" & @CRLF & _ " <font size="0pt" typeface="Adobe Pi Std"/>" & @CRLF & _ " <para vAlign="middle"/>" & @CRLF & _ " <value>" & @CRLF & _ " <text>0</text>" & @CRLF & _ " </value>" & @CRLF & _ " <items>" & @CRLF & _ " <text>1</text>" & @CRLF & _ " <text>0</text>" & @CRLF & _ " <text/>" & @CRLF & _ " </items>" & @CRLF & _ "</field>" & @CRLF & _ "<field xmlns="http://www.xfa.org/schema/xfa-template/2.8/" name="detcon_special_housing" y="5.393mm" w="27.94mm" h="4.134mm" x="0.343mm">" & @CRLF & _ " <ui>" & @CRLF & _ " <choiceList>" & @CRLF & _ " <border>" & @CRLF & _ " <edge stroke="lowered"/>" & @CRLF & _ " </border>" & @CRLF & _ " <margin/>" & @CRLF & _ " </choiceList>" & @CRLF & _ " </ui>" & @CRLF & _ " <font typeface="Arial Narrow" size="6pt"/>" & @CRLF & _ " <margin topInset="0mm" bottomInset="0mm" leftInset="0mm" rightInset="0mm"/>" & @CRLF & _ " <para vAlign="middle"/>" & @CRLF & _ " <value>" & @CRLF & _ " <text>NA</text>" & @CRLF & _ " </value>" & @CRLF & _ " <items>" & @CRLF & _ " <text>Not Applicable</text>" & @CRLF & _ " <text>Hotel Component</text>" & @CRLF & _ " </items>" & @CRLF & _ " <items save="1" presence="hidden">" & @CRLF & _ " <text>NA</text>" & @CRLF & _ " <text>HC</text>" & @CRLF & _ " </items>" & @CRLF & _ "</field>" & @CRLF & _ "<exclGroup xmlns="http://www.xfa.org/schema/xfa-template/2.8/" name="detcon_photo_taken" x="0in" y="0in">" & @CRLF & _ " <?templateDesigner itemValuesSpecified 1?>" & @CRLF & _ " <field w="12.446mm" h="3.825mm" name="lb_yes">" & @CRLF & _ " <ui>" & @CRLF & _ " <checkButton size="1.7639mm" shape="round">" & @CRLF & _ " <border>" & @CRLF & _ " <?templateDesigner StyleID apcb1?>" & @CRLF & _ " <edge/>" & @CRLF & _ " <fill/>" & @CRLF & _ " </border>" & @CRLF & _ " </checkButton>" & @CRLF & _ " </ui>" & @CRLF & _ " <font typeface="Myriad Pro"/>" & @CRLF & _ " <margin leftInset="1mm" rightInset="1mm"/>" & @CRLF & _ " <para vAlign="middle"/>" & @CRLF & _ " <caption placement="right" reserve="7.698mm">" & @CRLF & _ " <para vAlign="middle" spaceAbove="0pt" spaceBelow="0pt" textIndent="0pt" marginLeft="0pt" marginRight="0pt"/>" & @CRLF & _ " <font size="8pt" typeface="Arial Narrow" baselineShift="0pt"/>" & @CRLF & _ " <value>" & @CRLF & _ " <text>YES</text>" & @CRLF & _ " </value>" & @CRLF & _ " </caption>" & @CRLF & _ " <value>" & @CRLF & _ " <text xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>" & @CRLF & _ " </value>" & @CRLF & _ " <items>" & @CRLF & _ " <text>1</text>" & @CRLF & _ " </items>" & @CRLF & _ " </field>" & @CRLF & _ " <field w="28.702mm" h="3.825mm" name="lb_no" x="13.233mm">" & @CRLF & _ " <ui>" & @CRLF & _ " <checkButton size="1.7639mm" shape="round">" & @CRLF & _ " <border>" & @CRLF & _ " <?templateDesigner StyleID apcb1?>" & @CRLF & _ " <edge/>" & @CRLF & _ " <fill/>" & @CRLF & _ " </border>" & @CRLF & _ " </checkButton>" & @CRLF & _ " </ui>" & @CRLF & _ " <font typeface="Myriad Pro"/>" & @CRLF & _ " <margin leftInset="1mm" rightInset="1mm"/>" & @CRLF & _ " <para vAlign="middle"/>" & @CRLF & _ " <caption placement="right" reserve="23.954mm">" & @CRLF & _ " <para vAlign="middle" spaceAbove="0pt" spaceBelow="0pt" textIndent="0pt" marginLeft="0pt" marginRight="0pt"/>" & @CRLF & _ " <font size="8pt" typeface="Arial Narrow" baselineShift="0pt"/>" & @CRLF & _ " <value>" & @CRLF & _ " <text>NO (see comments)</text>" & @CRLF & _ " </value>" & @CRLF & _ " </caption>" & @CRLF & _ " <value>" & @CRLF & _ " <text xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>" & @CRLF & _ " </value>" & @CRLF & _ " <items>" & @CRLF & _ " <text>0</text>" & @CRLF & _ " </items>" & @CRLF & _ " </field>" & @CRLF & _ " <border>" & @CRLF & _ " <edge presence="hidden"/>" & @CRLF & _ " </border>" & @CRLF & _ " <?templateDesigner expand 1?></exclGroup>" Local $sSubst = "VALUES (12345,"$3","/Tx", "", "N", "Y"),\r\n" 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