import Foundation
let pattern = #"^120/BHP\d/(?P<lblreq_board>LBLREQ)-(?P<lblreq_id>\d+)/(?P<mission>\d{4}-\d{2}-\d{2}-Z0F\d{4})/(?P<run>\d+)/(?P<vehicle_time>\d{18})/(?P<event_time_s>\d+\.\d+)/(?:sweep_dir_\d+/sweep_\d+/)?image_(?P<channel>[a-z_]+)_000000000\.png$"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
120/BHP4/LBLREQ-92/2018-06-13-Z0F0034/2/347742483826079513/315970791.448747000/sweep_dir_0/sweep_0/image_raw_ring_front_center_000000000.png
120/BHP4/LBLREQ-99/2018-07-05-Z0F0026/2/305006254539769513/315967941.329407000/sweep_dir_0/sweep_0/image_raw_stereo_front_left_000000000.png
"""#
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