Extract links from string optimization

Question

I get data (HTML string) from website. I want to extract all links. I write function (it works), but it is so slow...

Can you help me to optimize it? What standard

Answer 1

Like AdamPro13 said above using NSDataDetector you can easily get all the URLs, see it the following code :

let text = "http://www.google.com. http://www.bla.com"
let types: NSTextCheckingType = .Link
var error : NSError?

let detector = NSDataDetector(types: types.rawValue, error: &error)        
var matches = detector!.matchesInString(text, options: nil, range: NSMakeRange(0, count(text)))

for match in matches {
   println(match.URL!)
}

It outputs :

http://www.google.com
http://www.bla.com

Updated to Swift 2.0

let text = "http://www.google.com. http://www.bla.com"
let types: NSTextCheckingType = .Link

let detector = try? NSDataDetector(types: types.rawValue)

guard let detect = detector else {
   return
}

let matches = detect.matchesInString(text, options: .ReportCompletion, range: NSMakeRange(0, text.characters.count))

for match in matches {
    print(match.URL!)
}

Remember to use the guard statement in the above case it must be inside a function or loop.

I hope this help.