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

Language

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)^\D{8}(?<time>\d[^\s]*\s[^\s]*)\s(?<severity>\w)\s[/|]\s(?<source>[^\s]*[\:])[\s]*(?<message>.*[/\/n])([\W]*[\w]*){3}[\W]{3}(?<logdate>[\d]*\-[\d]*\-[\d]*)\w(?<logtime>[\d]*\:[\d]*\:[\d]*\.[\d]*)\w\W*$" Local $sString = "{"log":"2017-12-19 13:32:01.280700 I | etcdmain: etcd Version: 3.0.17\n","stream":"stderr","time":"2017-12-19T13:32:01.281026986Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.280914 I | etcdmain: Git SHA: cc198e2\n","stream":"stderr","time":"2017-12-19T13:32:01.281103421Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.280923 I | etcdmain: Go Version: go1.6.4\n","stream":"stderr","time":"2017-12-19T13:32:01.281107072Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.280928 I | etcdmain: Go OS/Arch: linux/amd64\n","stream":"stderr","time":"2017-12-19T13:32:01.281108985Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.280933 I | etcdmain: setting maximum number of CPUs to 4, total number of available CPUs is 4\n","stream":"stderr","time":"2017-12-19T13:32:01.281110867Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.281161 N | etcdmain: the server is already initialized as member before, starting as etcd member...\n","stream":"stderr","time":"2017-12-19T13:32:01.281297016Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.282067 I | etcdmain: listening for peers on http://localhost:2380\n","stream":"stderr","time":"2017-12-19T13:32:01.282350397Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.282152 I | etcdmain: listening for client requests on 127.0.0.1:2379\n","stream":"stderr","time":"2017-12-19T13:32:01.282361979Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286927 I | etcdserver: recovered store from snapshot at index 15161518\n","stream":"stderr","time":"2017-12-19T13:32:01.29074204Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286950 I | etcdserver: name = default\n","stream":"stderr","time":"2017-12-19T13:32:01.290753557Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286955 I | etcdserver: data dir = /var/lib/etcd\n","stream":"stderr","time":"2017-12-19T13:32:01.290756077Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286960 I | etcdserver: member dir = /var/lib/etcd/member\n","stream":"stderr","time":"2017-12-19T13:32:01.290758045Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286965 I | etcdserver: heartbeat = 100ms\n","stream":"stderr","time":"2017-12-19T13:32:01.290759777Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286968 I | etcdserver: election = 1000ms\n","stream":"stderr","time":"2017-12-19T13:32:01.290761577Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286972 I | etcdserver: snapshot count = 10000\n","stream":"stderr","time":"2017-12-19T13:32:01.290763342Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.286983 I | etcdserver: advertise client URLs = http://127.0.0.1:2379\n","stream":"stderr","time":"2017-12-19T13:32:01.290765215Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.786992 I | etcdserver: restarting member 8e9e05c52164694d in cluster cdf818194e3a8c32 at commit index 15168960\n","stream":"stderr","time":"2017-12-19T13:32:01.787878528Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.788412 I | raft: 8e9e05c52164694d became follower at term 9\n","stream":"stderr","time":"2017-12-19T13:32:01.791064352Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.788435 I | raft: newRaft 8e9e05c52164694d [peers: [8e9e05c52164694d], term: 9, commit: 15168960, applied: 15161518, lastindex: 15168960, lastterm: 9]\n","stream":"stderr","time":"2017-12-19T13:32:01.791076857Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.788561 I | api: enabled capabilities for version 3.0\n","stream":"stderr","time":"2017-12-19T13:32:01.791079764Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.788574 I | membership: added member 8e9e05c52164694d [http://localhost:2380] to cluster cdf818194e3a8c32 from store\n","stream":"stderr","time":"2017-12-19T13:32:01.791082008Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.788582 I | membership: set the cluster version to 3.0 from store\n","stream":"stderr","time":"2017-12-19T13:32:01.791084212Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.792500 I | mvcc: restore compact to 5751429\n","stream":"stderr","time":"2017-12-19T13:32:01.794829127Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:01.797258 I | etcdserver: starting server... [version: 3.0.17, cluster version: 3.0]\n","stream":"stderr","time":"2017-12-19T13:32:01.797433251Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.588875 I | raft: 8e9e05c52164694d is starting a new election at term 9\n","stream":"stderr","time":"2017-12-19T13:32:02.589552499Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.589298 I | raft: 8e9e05c52164694d became candidate at term 10\n","stream":"stderr","time":"2017-12-19T13:32:02.589571444Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.589306 I | raft: 8e9e05c52164694d received vote from 8e9e05c52164694d at term 10\n","stream":"stderr","time":"2017-12-19T13:32:02.589574111Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.589319 I | raft: 8e9e05c52164694d became leader at term 10\n","stream":"stderr","time":"2017-12-19T13:32:02.589584935Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.589327 I | raft: raft.node: 8e9e05c52164694d elected leader 8e9e05c52164694d at term 10\n","stream":"stderr","time":"2017-12-19T13:32:02.58958702Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.590591 I | etcdserver: published {Name:default ClientURLs:[http://127.0.0.1:2379]} to cluster cdf818194e3a8c32\n","stream":"stderr","time":"2017-12-19T13:32:02.605236261Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.590605 I | etcdmain: ready to serve client requests\n","stream":"stderr","time":"2017-12-19T13:32:02.605250506Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:02.590922 N | etcdmain: serving insecure client requests on 127.0.0.1:2379, this is strongly discouraged!\n","stream":"stderr","time":"2017-12-19T13:32:02.605253194Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:13.727465 W | etcdserver: apply entries took too long [18.964348ms for 1 entries]\n","stream":"stderr","time":"2017-12-19T13:32:13.73174732Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:13.728444 W | etcdserver: avoid queries with large range/delete range!\n","stream":"stderr","time":"2017-12-19T13:32:13.731786609Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:17.119442 W | etcdserver: apply entries took too long [11.388753ms for 1 entries]\n","stream":"stderr","time":"2017-12-19T13:32:17.136726266Z"}" & @CRLF & _ "{"log":"2017-12-19 13:32:17.119466 W | etcdserver: avoid queries with large range/delete range!\n","stream":"stderr","time":"2017-12-19T13:32:17.13674029Z"}" & @CRLF & _ "{"log":"2017-12-19 13:33:12.813262 W | etcdserver: apply entries took too long [12.968146ms for 1 entries]\n","stream":"stderr","time":"2017-12-19T13:33:12.817703884Z"}" & @CRLF & _ "{"log":"2017-12-19 13:33:12.814159 W | etcdserver: avoid queries with large range/delete range!\n","stream":"stderr","time":"2017-12-19T13:33:12.817722819Z"}" & @CRLF & _ "{"log":"2017-12-19 13:33:53.019317 W | etcdserver: apply entries took too long [34.109947ms for 1 entries]\n","stream":"stderr","time":"2017-12-19T13:33:53.027210205Z"}" & @CRLF & _ "{"log":"2017-12-19 13:33:53.019867 W | etcdserver: avoid queries with large range/delete range!\n","stream":"stderr","time":"2017-12-19T13:33:53.027233576Z"}" & @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