import Foundation
let pattern = #"(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})\/(?:[\d]{1,3})\b(?! is variably)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
D 10.50.80.0/24 [90/3072] via 10.10.10.1, 3w6d, Vlan10
C 10.10.140.0/24 is directly connected, Vlan240
10.10.140.0/2
10.10.140.0/16
2.2.2.2/24
5.5.5.5.5/24
// Negative
10.0.0.0
10.10.60.0/16 is variably subnetted, 58 subnets, 4 masks
"""#
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