import Foundation
let pattern = #"(^\d{1,3}((\s|-))?\(?\d\d\d\)?|^\(?\d\d\d\)?)((\s|-))?\d\d\d((\s|-))?\d\d\d\d$"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
// These Should Work
1 123 321 1234
1 (123-321-1234
11233211234
1(123)321-1234
123-321-1234
1-123321-1234
1(123321-1234
// These Should Not
1111 123-321-1234
1 123 32112-34
1(123) -321-1234
1(123321123-4
12345678901234
"""#
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