import Foundation
let pattern = #"\[\s+(?<users_to_delete>\d+)\s+\] users to delete, \[\s+(?<users_to_add>\d+)\s+\] users to add, \[\s+(?<users_to_update>\d+)\s+\] users to update"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
2021-08-12 7:17:34.338 AM 2021-08-12 07:17:34,338+0200 Caesium-1-1 INFO ServiceRunner [c.a.c.d.xxx.cache.xxx] scanned and compared [ 9506 ] users to delete, [ 0 ] users to add, [ 378 ] users to update in DB cache in [ 1166ms ]
2021-08-12 06:17:34,305+0200 Caesium-1-1 INFO ServiceRunner [c.a.c.d.xxx.cache.xxx] scanned and compared [ 9506 ] users to delete, [ 0 ] users to add, [ 125 ] users to update in DB cache in [ 1129ms ]
"""#
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