import Foundation
let pattern = ###"(?i)VITA?MIN\s*C##.*?##[0-9]+ days"###
let regex = try! NSRegularExpression(pattern: pattern, options: .caseInsensitive)
let testString = ###"""
1. As VITMINC##1-0-1##1 days.As
2. amlodipine ##vitamin c##diclo##tabramycin eye drop##metformin##0-0-1##15 days. amlodipine ##1-0-1## 3 days.
3. Xylometazoline(P) Nasal drops##0-1-0##2 days. Paracetamol 500mg tab##0.5-0-0-0##2 days. VITMINC##0.5-0-0##2 days. Chlorpheniramine maleate 4mg tab##0-1-0##2 days.
4. VITMINC##0-0-0-1##2 days.
5. amlodipine##vitamin c##diclo##tabramycin eye drop##metformin##0-0-1##15 days.
"""###
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