import Foundation
let pattern = #"\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|\{(?:[^\{\}]|w+)*\})*\})*\})*\})*\})*\})*\})*\})*\})*\}"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
2016-03-21 21:36:20.878 INFO 17512 --- [main] This is going well.
ok: [goingwell] => {
"localresult": {
"aa":"bb",
"aaa":"bbb"
}
}
2016-03-21 21:36:31.172 INFO 17513 --- [main] Continue logging ...
2016-03-21 21:36:42.568 INFO 17514 --- [main] With more json strings...
ok: [xxa123] => {
"axaxaxa": {
"aada":"bb",
"aaadfa":"bbb"
}
}
2016-03-21 21:36:43.132 INFO 17515 --- [main] Continue logging ...
2016-03-21 21:36:45.428 INFO 17516 --- [main] With more json strings...
ok: [xxa123] => {
"ccc": {
"ddd": {
"eee": {
"fff": "ggg"
}
}
}
}
"""#
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