I have a string that looks like:
"OS-MF sessionId='big_super-long-id_string', factor='PASSCODE'"
But I need to get the sessionId that is in that string. Can someone help me in swift? I've tried regex but can't get it to work.
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Please post your attempt anyway.Wiktor Stribiżew– Wiktor Stribiżew2015-05-26 21:33:36 +00:00Commented May 26, 2015 at 21:33
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2 Answers
If you want to use Regular Expression you can use the following fucntion to match any occurrence of the pattern:
func matchesForRegexInText(regex: String!, text: String!) -> [String] {
let regex = NSRegularExpression(pattern: regex, options: nil, error: nil)!
let nsString = text as NSString
let results = regex.matchesInString(text,
options: nil, range: NSMakeRange(0, nsString.length))
as! [NSTextCheckingResult]
return map(results) { nsString.substringWithRange($0.range)}
}
And you can test it with the following regex :
let myStringToBeMatched = "OS-MF sessionId='big_super-long-id_string', factor='PASSCODE'"
var results = self.matchesForRegexInText("(?<=sessionId=')(.*)(?=',)", text: myStringToBeMatched)
for item in results {
println(item)
}
The output should be :
big_super-long-id_string
Notes:
(?<=sessionId=') means preceded by sessionId='
(.*) means any character zero or more times
(?=',) means followed by ',
You can read more about Regex patterns here
I hope this help you.
Comments
let input = "OS-MF sessionId='big_super-long-id_string', factor='PASSCODE'"
let sessionID = input.componentsSeparatedByString("sessionId='").last!.componentsSeparatedByString("',").first!
println(sessionID) // "big_super-long-id_string"
