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

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(public|protected|private|static|\s) +[\w\<\>\[\]]+\s+(\w+) *\([^\)]*\)\s*(\{)" Local $sString = "/*" & @CRLF & _ " * Licensed to the Apache Software Foundation (ASF) under one or more" & @CRLF & _ " * contributor license agreements. See the NOTICE file distributed with" & @CRLF & _ " * this work for additional information regarding copyright ownership." & @CRLF & _ " * The ASF licenses this file to You under the Apache License, Version 2.0" & @CRLF & _ " * (the "License"); you may not use this file except in compliance with" & @CRLF & _ " * the License. You may obtain a copy of the License at" & @CRLF & _ " *" & @CRLF & _ " * http://www.apache.org/licenses/LICENSE-2.0" & @CRLF & _ " *" & @CRLF & _ " * Unless required by applicable law or agreed to in writing, software" & @CRLF & _ " * distributed under the License is distributed on an "AS IS" BASIS," & @CRLF & _ " * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied." & @CRLF & _ " * See the License for the specific language governing permissions and" & @CRLF & _ " * limitations under the License." & @CRLF & _ " */" & @CRLF & _ "package org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline;" & @CRLF & _ "" & @CRLF & _ "import org.apache.pdfbox.cos.COSDictionary;" & @CRLF & _ "import org.apache.pdfbox.cos.COSName;" & @CRLF & _ "" & @CRLF & _ "/**" & @CRLF & _ " * This represents an outline in a pdf document." & @CRLF & _ " *" & @CRLF & _ " * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>" & @CRLF & _ " * @version $Revision: 1.2 $" & @CRLF & _ " */" & @CRLF & _ "public final class PDDocumentOutline extends PDOutlineNode" & @CRLF & _ "{" & @CRLF & _ "" & @CRLF & _ " " & @CRLF & _ " static java.io.BufferedWriter bfn;" & @CRLF & _ " static java.io.BufferedWriter bf;" & @CRLF & _ "" & @CRLF & _ " /**" & @CRLF & _ " * Default Constructor." & @CRLF & _ " */" & @CRLF & _ " public PDDocumentOutline()" & @CRLF & _ " {" & @CRLF & _ " " & @CRLF & _ " getCOSDictionary().setName(COSName.TYPE, COSName.OUTLINES.getName());" & @CRLF & _ " " & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " /**" & @CRLF & _ " * Constructor for an existing document outline." & @CRLF & _ " *" & @CRLF & _ " * @param dic The storage dictionary." & @CRLF & _ " */" & @CRLF & _ " public PDDocumentOutline( COSDictionary dic )" & @CRLF & _ " {" & @CRLF & _ " super( dic );" & @CRLF & _ " getCOSDictionary().setName(COSName.TYPE, COSName.OUTLINES.getName());" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" & @CRLF & _ " public boolean isNodeOpen()" & @CRLF & _ " {" & @CRLF & _ " return true;" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" & @CRLF & _ " public void openNode()" & @CRLF & _ " {" & @CRLF & _ " // The root of the outline hierarchy is not an OutlineItem and cannot be opened or closed" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" & @CRLF & _ " public void closeNode()" & @CRLF & _ " {" & @CRLF & _ " // The root of the outline hierarchy is not an OutlineItem and cannot be opened or closed" & @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