import Foundation
let pattern = #"errorDescription\"\:\"(?<errorDescription>[^\"]+).+errorCode\"\:\"(?<errorCode>[^\"]+)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
2016-10-25 12:33:31,926 [http-00000:13111-2] INFO [org.apache.cxf.interceptor.LoggingInInterceptor ?] Inbound Message ----------------------------
ID: 18 Response-Code: 200
Encoding: UTF-8
Content-Type: application/json;charset=UTF-8
Headers: {content-type=[application/json;charset=UTF-8], Date=[Tue, 25 Oct 2016 17:33:30 GMT], Expires=[Thu, 01 Jan 1970 00:00:00 GMT], Set-Cookie=[BrowserId=L8p9Eij0T4Sfp-INSP9zDw;Path=/;Domain=.salesforce;Expires=Sat, 24-Dec-2016 17:33:30 GMT], transfer-encoding=[chunked]}
Payload: {"responseCode":"201","messageId":"704c8163-13d4-42b8-a684-94b9d23e849e",
"lead":[{"responseCode":"201","leadID":null,"errors":[{"errorField":"head","errorDescription":"The value of email is invalid.","errorCode":"Value_Invalid_E400"},{"errorField":"bestTimeToContact","errorDescription":"The value of bestTimeToContact is invalid.","errorCode":"Value_Invalid_E400"}]}]}
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2016-10-25 12:33:31,986 [http-000000:13111-2] INFO [org.apache.cxf.interceptor.LoggingOutInterceptor ?] Outbound Message ---------------------------
ID: 17
Response-Code: 200
Content-Type: application/json
Headers: {Content-Type=[application/json], Date=[Tue, 25 Oct 2016 17:33:31 GMT]}
Payload: {"errors":[{"errorCode":"Value_Invalid_E400","errorDescription":"The value of email is invalid.","errorField":"head"},{"errorCode":"Value_Invalid_E400","errorDescription":"The value of bestTimeToContact is invalid.","errorField":"bestTimeToContact"}]} --------------------------------------
"""#
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