import Foundation
let pattern = ##"\(\?\(DEFINE\)(?<definition>(?<=(?:[^\\](?:\\\\)+)|[^\\])\(\?\<(?<name>[\w-[0-9]]\w*?)\>(?<content>(?#internals shallow)(?:(?:(?<=(?:[^\\](?:\\\\)+)|[^\\])\[(?:(?<=(?:[^\\](?:\\\\)+)|[^\\])(?:\\\[|\\\])|[^\[\]])*(?<=(?:[^\\](?:\\\\)+)|[^\\])\])|(?:(?<=(?:[^\\](?:\\\\)+)|[^\\])\(\?(?:\!|\=|\:|\<\!|\<\=)(?#internals deep)(?:(?<=(?:[^\\](?:\\\\)+)|[^\\])(?:\\\(|\\\)|\\\[|\\\])|[^\(\)\[\]])+(?<=(?:[^\\](?:\\\\)+)|[^\\])\))|(?:(?<=(?:[^\\](?:\\\\)+)|[^\\])(?:\\\(|\\\)|\\\[|\\\])|[^\(\)\[\]]))+)(?<=(?:[^\\](?:\\\\)+)|[^\\])\))*(?<=(?:[^\\](?:\\\\)+)|[^\\])\)"##
let regex = try! NSRegularExpression(pattern: pattern)
let testString = ##"(?(DEFINE)(?<internal_name_char_s>[^\x85\n\r\v\t\\\/\:\*\"\?\<\>\|])(?<external_filesc_name_char_s>[^\x85\n\r\v\t\\\/\:\*\"\?\<\>\|\s])(?<external_folderesc_name_char_s>[^\x85\n\r\v\t\\\/\:\*\"\?\<\>\|\s\.])(?<folder_name_s>\g'external_filesc_name_char_s'\g'internal_name_char_s'{1,258}\g'external_filesc_name_char_s'|\g'external_folderesc_name_char_s'\g'external_filesc_name_char_s'|\g'external_filesc_name_char_s'\g'external_folderesc_name_char_s'|\g'external_folderesc_name_char_s')(?<extension_char_s>[a-z0-9])(?<extension_s>\g'extension_char_s'{1,260})(?<file_name_s>(?:\g'external_filesc_name_char_s'\g'internal_name_char_s'{1,258}\g'external_filesc_name_char_s'|\g'external_filesc_name_char_s'{1,2})(?=\.\g'extension_s'\Z))(?<ipv4_number_s>(?:[12]\d\d)|(?:\d\d)|(?:\d))(?<ipv4_s>(?:\g'ipv4_number_s'\.){3}\g'ipv4_number_s'(?:\:\d+)?)(?<named_drive_root_s>[a-z]\:\/)(?<file_protocol_root_s>file\:\/\/\/\g'named_drive_root_s')(?<smb_root_s>\/\/)(?<hyper_text_root_s>https?\:\/\/))(?#definition is complete)\A(?!\Z)(?<all_until_last_name>(?<root>(?<fixed_root>\/|\g'named_drive_root_s'|\g'file_protocol_root_s'|(?<remote_root>\g'smb_root_s'|\g'hyper_text_root_s')(?:(?<ipv4>\g'ipv4_s')(?:\/(?!\Z)|))?)|(?<relative_root>\.{1,2}\/(?:\.\.\/)*))?(?<body>(?:\g'folder_name_s'\/)*?))(?<last_folder_or_file_name>(?<file_full_name>(?<file_short_name>\g'file_name_s')\.(?:(?<shortcut_extension>lnk)|(?<remote_extension>url)|(?<general_extension>\g'extension_s'))(?!\/))|(?:(?<folder_name>\g'folder_name_s')\/?))?\Z"##
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