import Foundation
let pattern = #"""
(?'gPatSyslogPRI'<\d+>)
(?'gPatMesgBody'.*)
(?'gPatMesgBodyMin'.*?)
(?'gPatSyslogNGHeader'\w{3}\s+\d{1,2}\s\d{1,2}:\d{1,2}:\d{1,2}\s\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})
(?'gPatMon'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec|\d{1,2})
(?'gPatMonNum'\d{1,2})
(?'gPatDay'\d{1,2})
(?'gPatTime'\d{1,2}:\d{1,2}:\d{1,2})
(?'gPatYear'\d{2,4})
(?'gPatMSec'\d{1,3})
(?'gPatTimeMSec'\d{1,2}:\d{1,2}:\d{1,2}\.\d{1,3})
(?'gPatTimeZone'Z|UTC|[+-]\d{1,2}:?\d{2})
(?'gPatWeekday'Mon|Tue|Wed|Thu|Fri|Sat|Sun)
(?'gPatIpV4Dot'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})
(?'gPatIpAddr'[0-9A-Fa-f]{0,4}(?::[0-9A-Fa-f]{0,4}){1,5}:(?:\d{1,3}(?:\.\d{1,3}){3}|[0-9A-Fa-f]{0,4}(?::[0-9A-Fa-f]{0,4})?)|\d{1,3}(?:\.\d{1,3}){3})
(?'gPatIpPort'\d{1,5})
(?'gPatProto'ftp|icmp|tcp|udp|http|ip|smb|smtp|snmp|others|FTP|ICMP|UDP|TCP|HTTP|IP|SMB|SMTP|SNMP|OTHERS)
(?'gPatFqdn'\w+[.\w+]+)
(?'gPatWord'\w+)
(?'gPatStr'[^\s]*)
(?'gPatHostName'[\w.-]+)
(?'gPatStrComma'[^,]*)
(?'gPatStrLeftParen'[^\(]*)
(?'gPatStrRightSB'[^\]]*)
(?'gPatInt'\d+)
(?'gPatSpace'\s+)
(?'gPatStrEndColon'[^:]*)
(?'gPatStrSQ'[^']*)
(?'gPatStrDQ'[^']*)
(?'gPatSentence'\w[\s+\w]*)
"""#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #""#
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