import Foundation
let pattern = #"[a-zA-Z]\d([a-zA-Z]|\d)(.([a-zA-Z]|\d){1,4})?"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
L89.141 – Pressure ulcer of left lower back, stage 1
L89.142 – Pressure ulcer of left lower back, stage 2
L89.143 – Pressure ulcer of left lower back, stage 3
L89.144 – Pressure ulcer of left lower back, stage 4
L89.149 – Pressure ulcer of left lower back, unspecified stage
L89.151 – Pressure ulcer of sacral region, stage 1
L89.152 – Pressure ulcer of sacral region, stage 2
A12.123a
123.1
B23
B12.
B12.321assdf
12B23.234a ds
"""#
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