import Foundation
let pattern = ##"(?<protocol>(?:http|ftp|irc)s?:\/\/)?(?:(?<user>[^:\n\r]+):(?<pass>[^@\n\r]+)@)?(?<host>(?:www\.)?(?:[^:\/\n\r]+)(?::(?<port>\d+))?)\/?(?<request>[^?#\n\r]+)?\??(?<query>[^#\n\r]*)?\#?(?<anchor>[^\n\r]*)?"##
let regex = try! NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines, .allowCommentsAndWhitespace])
let testString = ##"""
http://user:pass@some.example.com:80/directory/sub/place?C=M;O=A#nth
http://some.example.com/some/path/to/a/file.bin?request;part=1#somewhere
https://www.example.com
ircs://example.server.net:6697/#channel
irc://irc.example.org/channel
ftp://www.place.example.gov/
www.places.to.be
somewhere.to/go
"""##
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