import Foundation
let pattern = ##"(?i)\bhttps?[-\w.\~:/?#[\]@!$&'()*+,;=]+|[@#](\w+)|U\+([A-F\d]{5})"##
let regex = try! NSRegularExpression(pattern: pattern)
let testString = ##"""
This is a @ping and a #hash.
This is a www.example.com, this is http://example.com?asdf=1234#anchor
https://www.example.net/a/b/c/?g=5&awesome=foobar# U+23232 http://www5.example.com
https://sub.sub.www.example.org/ @pong@pug#tagged
http://example.com/@dave
more http://example.com/more_(than)_one_(parens)
andU+98765more http://example.com/blah_(wikipedia)#cite-1
and more http://example.com/blah_(wikipedia)_blah#cite-1
and more http://example.com/(something)?after=parens
"""##
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