import Foundation
let pattern = #"^(?P<IP>(?:[1-9]|[1-9][0-9]|1[0-9]{2}|2[0-1][0-9]|22[0-3])(?:\.(?:0|[1-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])){3}):(?P<PORT>(?:[1-9]|[1-9][0-9]{1,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5]))$"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
123.123.123.123:12345
123.0.123.2:23
123.01.123.2:23
123.10.123.2:23
0.1.2.3:1
1.0.2.3:1
223.255.255.255:123
225.255.255.255:123
12.231.21.232:65535
"""#
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