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
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"(?P<pan_log_receive_time>\w{3}\s*\d+\s*\d+:\d+:\d+)\s+(?:[^,]*,){3}(?P<pan_log_type>THREAT),(?P<pan_log_subtype>[^,]*),(?:[^,]*,){2}(?P<pan_log_src>[^,]*),(?P<pan_log_dst>[^,]*),(?:[^,]*,){2}(?P<pan_threat_policy>[^,]*),(?P<pan_threat_srcuser>[^,]*),(?:[^,]*),(?P<pan_threat_app>[^,]*),(?P<pan_threat_vsys>[^,]*),(?P<pan_threat_srczone>[^,]*),(?P<pan_threat_dstzone>[^,]*),(?P<pan_threat_inbound_if>[^,]*),(?P<pan_threat_outbound_if>[^,]*),(?:[^,]*,){4}(?P<pan_log_sport>[^,]*),(?P<pan_log_dstport>[^,]*),(?:[^,]*,){3}(?P<proto>[^,]*),(?P<action>[^,]*),"(?P<url>[^"]*)",\((?P<threat_id>\d+)\),(?P<cat>[^,]*),(?P<sev>[^,]*)"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #"<14>Jul 4 18:56:24 - 1,2018/07/04 18:56:24,010401007075,THREAT,url,0,2018/07/04 18:56:24,212.252.96.87,88.255.40.30,212.252.96.87,172.16.0.153,mail.sayistay.gov.tr,,,ssl,vsys1,Untrust-Zone,DMZ-1-Zone,ethernet1/1,ethernet1/6,SAY-Log-Forwarding-Profile,2018/07/04 18:56:24,401373,1,34538,443,34538,443,0x40f000,tcp,alert,"mail.sayistay.gov.tr/",(9999),URL-Allow-List,informational,client-to-server,257394,0x8000000000000000,Turkey,Turkey,0,,0,,,0,,,,,,,,0,0,0,0,0,,INT-FW-2,,,,,0,,0,,N/A,unknown,AppThreat-0-0,0x0ESC[0m"# let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(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 Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression