import Foundation
let pattern = #"\n([\d\.]+ ?\w+)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
3.6.10
POLLUTION DEGREE 4
continuous conductivity occurs due to conductive dust, rain or other wet conditions
3.6.11
CLEARANCE
shortest distance in air between two conductive parts
3.6.12
CREEPAGE DISTANCE
shortest distance along the surface of a solid insulating material between two conductive
parts
4 Tests
4.1 General
Tests in this standard are TYPE TESTS to be carried out on samples of equipment or parts.
"""#
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