import Foundation
let pattern = #"(^\d{1,2}+\.\d{1,2}\.\d{1,2}\.\d{1,2}$)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
qsdf4ghjk dfdf dfd 4fdfd3 d
4444
but not 4444
4444
333
44444.4444
2222
1
2.
3
555
6.6.7
44.5.
4.5.6.
4.5.6.7
44.44.6.4
12.12.12.12
dddd
this is a test of 3.4 and 3.4.5 and 3.4.5.6 and 33.44.55.66
hopefully something is learnded. qsdf4ghjk,
2.4.5.6.7 is here but at the beginning lets's put
2.3.5.7 but not 2.4.6.7. No space 2.4.6.7 .
3.5.6.7.
3.3.3
44
3.3.3.3
4.5.6.7.8 and more
"""#
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