import Foundation
let pattern = #"^(?<timestamp>\d+-\d+-\d+\s+\d+:\d+:\d+)\s+\[[^\]]*\]\s+\[(?<business_process_name>[^\]]*)\]\s+\[(?<business_process_step>[^\]]*)\]\s+\[(?<users>[^\]]*)\]\s+\w+\s+\[(?<error>[^\]]*)\]"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
2021-09-28 10:20:27 [machine-run-76416-hit-644640-step-12470] [Business Process Name] [Business Process Step Name] [Bot Users] MetadataStorage [ERROR] Boot failed
2022-04-04 23:30:16 [http-nio-127.0.0.1-7080-exec-3] [] [] [] DataBaseChecker [DEBUG] Checking MySQL ...
2022-04-04 23:30:16 [http-nio-127.0.0.1-7080-exec-3] [] [] [] DatabaseVersionChecker [INFO] Database is up to date.
2022-04-04 23:30:16 [http-nio-127.0.0.1-7080-exec-3] [] [] [] DataBaseChecker [DEBUG] Checking PostgreSQL ...
2022-04-04 23:30:16 [http-nio-127.0.0.1-7080-exec-3] [] [] [] OcrHealthChecker [DEBUG] Checking OCR ...
"""#
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