import Foundation
// WARNING: You included a flag that Swift doesn't support: X
// When this flag is set, it causes any backslash in the pattern that is followed by a letter that has no special meaning to cause an error.
// By default in Swift, a backslash followed by a letter with no special meaning will be treated as a literal.
let pattern = #"\b(?!([C-Z][Y-Z]\d{7}[A-M]))([A-B][A-X]\d{7}[A-X]\b)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .caseInsensitive)
let testString = #"""
ab1234567m
"""#
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