CODEWITHSUNDEEP
stringswift
Alexey K
Alexey K

Reputation: 6723

How can I remove characters from a string after a particular character?

Given a string, how do I truncate all characters following one particular character?

For example I have a url:

http://pics.v6.top.rbk.ru/v6_top_pics/resized/250xH/media/img/7/92/754435534528927.jpg"><div>Some text</div>"

I want to strip all characters after the ", including the " character.

Upvotes: 0

Views: 1922

Answers (3)

matt
matt

Reputation: 534958

extension String {
    mutating func stripFromCharacter(char:String) {
        let c = self.characters
        if let ix = c.indexOf("\"") {
            self = String(c.prefixUpTo(ix))
        }
    }
}

And here's how to use it:

var s = "http://pics.v6.top.rbk.ru/v6_top_pics/resized/250xH/media/img/7/92/754435534528927.jpg\"><div>Some text</div>"
s.stripFromCharacter("\"")

Upvotes: 1

Michael Dautermann
Michael Dautermann

Reputation: 89509

Maybe you simply want to use NSDataDetectors?

E.G. something like:

let input = "http://pics.v6.top.rbk.ru/v6_top_pics/resized/250xH/media/img/7/92/754435534528927.jpg"><div>Some text</div>""
let detector = try! NSDataDetector(types: NSTextCheckingType.Link.rawValue)
let matches = detector.matchesInString(input, options: [], range: NSMakeRange(0, input.characters.count))

for match in matches {
    let url = (input as NSString).substringWithRange(match.range)
    print(url)
}

More info can be found in this HackingWithSwift blog post.

Upvotes: 0

Lukas
Lukas

Reputation: 3433

Probably the dumbest way to do it but it works.

let a = "http://pics.v6.top.rbk.ru/v6_top_pics/resized/250xH/media/img/7/92/754435534528927.jpg\"" + "><div>Some text</div>"
print(a)
var new = ""
for char in a.characters{
    if char == "\""{ break }
    new.append(char)
}

print(new)

Upvotes: 0

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