import Foundation
let pattern = #"CA_[A-Z][0-9][A-Z]\h?[0-9][A-Z][0-9]|US_[0-9]{5}|GB_(?:(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])\h?[0-9][A-Z]{2}|GIR\h?0AA)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"CA_LSE2B9"#
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