import Foundation
let pattern = #"(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-5][0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-5][0-5])"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
255.0.0.1
127.0.0.1
127,0,0,1
192.168.178.90
89.50.50.123
0000.2.2.2
2.0000.2.2
2.2.0000.2
2.2.2.0000
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
if let firstMatch = regex.firstMatch(in: testString, range: stringRange) {
let result: [String] = (1 ..< firstMatch.numberOfRanges).map { (testString as NSString).substring(with: firstMatch.range(at: $0)) }
print(result)
} else {
print("No matches were found.")
}
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