import Foundation
let pattern = #".*martian.*source.*\n.*"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
Jan 10 11:08:21 server kernel: martian source 192.168.12.197 from 192.168.12.198, on dev eth0
Jan 11 10:12:45 server kernel: ll header: 08:00:00:00:45:00:01:00:00:00:40:00:40:11:9f:11:c0:a8:0c:c6:c0:a8:0c:c5
Jan 12 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 13 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 14 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 15 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 16 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 17 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 18 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 19 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 20 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 21 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 22 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 23 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 23 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 24 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 25 11:08:21 server kernel: martian source 192.168.12.197 from 192.168.12.198, on dev eth0
Jan 25 10:12:45 server kernel: ll header: 08:00:00:00:45:00:01:00:00:00:40:00:40:11:9f:11:c0:a8:0c:c6:c0:a8:0c:c5
Jan 26 11:08:21 server kernel: martian source 192.168.12.197 from 192.168.12.198, on dev eth0
Jan 26 10:12:45 server kernel: ll header: 08:00:00:00:45:00:01:00:00:00:40:00:40:11:9f:11:c0:a8:0c:c6:c0:a8:0c:c5
Jan 27 10:12:45 server kernel: lo: Disabled Priacy Extensions
Jan 28 11:08:21 server kernel: martian source 192.168.12.197 from 192.168.12.198, on dev eth0
Jan 28 10:12:45 server kernel: ll header: 08:00:00:00:45:00:01:00:00:00:40:00:40:11:9f:11:c0:a8:0c:c6:c0:a8:0c:c5
"""#
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