import Foundation
let pattern = #"^\d{4}\.\d{2}\.\d{2} \S.*(?:\r?\n\d{4}\.\d{2}\.\d{2}\b.*)+(?:\r?\n(?!\d{4}\.\d{2}\.\d{2}\b).*)*"#
let regex = try! NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines, .caseInsensitive])
let testString = #"""
2020.11.01 SOME TEXT -17,30 83 016,86
2020.10.30
2020.10.30
2020.10.30
2020.10.30
Some text that should be
matched 20.01.2020 as
multiline text
until now
2020.11.01 SOME TEXT -27,30 81 016,86
2020.10.30
Some text that should be
matched 20.01.2020 as
multiline text
until now
2020.10.30
"""#
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