Manipulating strings with Swift - xcode

Question

I am trying to divide a String in Swift. I have the following string
Program - /path/to/file.doc
I want to get three informations out of this string
Program
/path/to/file.doc
file.doc
I began with the following solution
var str = "Program - /path/to/file.doc"
let indi = str.rangeOfString("-")?.startIndex
let subString = str.substringWithRange(Range<String.Index>(start: str.startIndex, end: indi!))
let subString2 = str.substringWithRange(Range<String.Index>(start: indi!, end: str.endIndex))
This gives me the results
"Program "and
"- /path/to/file.doc"
But how can I get file.doc after the last /?
How Can i increase/decrease and range index to avoid blank spaces?

Answer 1

Yes, sidyll's suggestion is correct, it's a very common practice to get components of Unix path by converting it to NSURL. You may want to write something like this:
var str = "Program - /path/to/file.doc"
if let indi = str.rangeOfString(" - ")?.startIndex {
let subString = str.substringWithRange(Range<String.Index>(start: str.startIndex, end: indi))
let subString2 = str.substringWithRange(Range<String.Index>(start: indi, end: str.endIndex))
let fileName = NSURL(string: subString2).lastPathComponent()
}
I strongly suggest you don't do force unwrap like this. Consider situation if this code will work with string without a particular pattern, for example empty string. Correct, runtime error.