import Foundation
let pattern = #"CONN\:.*?prio=(?<severity>\d)\s+id=(?<vmid>\d+).*?event=(?<tag1>\w+)\s+rule=(?<tag2>\w+)\s+conn=(?<tag3>\w+)\s+connipproto=(?<protname>\w+)\s+connrecvif=(?<dinterface>\w+)\s+connsrcip=(?<sip>(\d{1,3}\.){3}\d{1,3})\s+connsrcport=(?<sport>\d+).*?conndestip=(?<dip>(\d{1,3}\.){3}\d{1,3})\s+conndestport=(?<dport>\d+)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
06 12 2017 22:31:35 1.2.1.1 <LOC0:INFO> 1 2017-06-12T22:31:35+02:00 dedusfw EFW - - - CONN: prio=1 id=00600001 rev=1 event=conn_open rule=local_to_nds_dc conn=open connipproto=TCP connrecvif=GESW_vlan2 connsrcip=1.1.1.7 connsrcport=51435 conndestif=G1_vlan253 conndestip=4.1.1.1 conndestport=443
CONN\:.*?prio=(?<severity>\d)\s+id=(?<vmid>\d+).*?action=(?<action>\w+).*?rule=(?<tag1>.*?)\s+recvif=(?<tag2>.*?)\s+srcip=<sip>
"""#
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