How to split filename from file extension in Swift?

Question

Given the name of a file in the bundle, I want load the file into my Swift app. So I need to use this method:

let soundURL = NSBundle.mainBundle().URLForReso         


        

Answer 1

Try this for a simple Swift 4 solution

extension String {
    func stripExtension(_ extensionSeperator: Character = ".") -> String {
        let selfReversed = self.reversed()
        guard let extensionPosition = selfReversed.index(of: extensionSeperator) else {  return self  }
        return String(self[..<self.index(before: (extensionPosition.base.samePosition(in: self)!))])
    }
}

print("hello.there.world".stripExtension())
// prints "hello.there"

Answer 2

SWIFT 3.x Shortest Native Solution

let fileName:NSString = "the_file_name.mp3"
let onlyName = fileName.deletingPathExtension
let onlyExt = fileName.pathExtension

No extension or any extra stuff (I've tested. based on @gabbler solution for Swift 2)

Answer 3

Swift 5

 URL(string: filePath)?.pathExtension

Answer 4

In Swift 2.1, it seems that the current way to do this is:

let filename = fileURL.URLByDeletingPathExtension?.lastPathComponent
let extension = fileURL.pathExtension

Answer 5

Latest Swift 4.2 works like this:

extension String {
    func fileName() -> String {
        return URL(fileURLWithPath: self).deletingPathExtension().lastPathComponent
    }

    func fileExtension() -> String {
        return URL(fileURLWithPath: self).pathExtension
    }
}

Answer 6

Solution Swift 4

This solution will work for all instances and does not depend on manually parsing the string.

let path = "/Some/Random/Path/To/This.Strange.File.txt"

let fileName = URL(fileURLWithPath: path).deletingPathExtension().lastPathComponent

Swift.print(fileName)

The resulting output will be

This.Strange.File