import Foundation
let pattern = #"""
^]d2(?:
01(?P<g01>.{14})|
10(?P<g10>(?:(?!\[GS]).){1,20})(?:\[GS]|$)|
17(?P<g17>.{6})|
21(?P<g21>(?:(?!\[GS]).){1,20})(?:\[GS]|$)
)+$
"""#
let regex = try! NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines, .allowCommentsAndWhitespace])
let testString = #"""
]d2010704626096200210KT0BT2204[GS]1726090021RNM5F8CTMMBHZSY7]
]d201070462608682672140097289158930[GS]10101656[GS]17261130
"""#
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