import Foundation
let pattern = #"[^.]*(cervi(c|x)|C[1-7]|T[1-6]).*?\.(?=[^.]*L[1-5][^.]*\.)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"There is a finding on T2 of spine. The finding is most likely fracture. Additionally, patient seems tired. In L2, patient has there is a circumferential disc bulge with Central disc herniation. In L5, patient seems to have another fracture. In the cervical spine, patient has any degeneration. Patient is may also have fever. L3, endplate edema is also found. In L5, patient may have bruise."#
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