How to delete last path component of a String in Swift?

I have a String `11/Passion/01PassionAwakening.mp3` and I need to delete the last path component `01PassionAwakening.mp3` in order to get `11/Passion`.

How can I do this while saving both components?

You should really do away with legacy `NS` Objective-C classes and manual path string splitting where possible. Use `URL` instead:

let url = URL(fileURLWithPath: "a/b/c.dat", isDirectory: false)
let path = url.deletingLastPathComponent().relativePath // 'a/b'
let file = url.lastPathComponent // 'c.dat'

That being said, Apple has an explicit [FilePath](

[To see links please register here]

) type starting with macOS 11, but with no path manipulation methods. For those you'd have to include the external [system package](

[To see links please register here]

)

If you are on macOS 12, the methods from the external package are now also available on the system.

**Swift 4+:**

let components = path.split(separator: "/")
let directory = components.dropLast(1).map(String.init).joined(separator: "/")

**Swift 3:**

let str = "11/Passion/01PassionAwakening.mp3"
if !str.isEmpty {
let components = str.characters.split("/")
let head = components.dropLast(1).map(String.init).joinWithSeparator("/")
let tail = components.dropFirst(components.count-1).map(String.init)[0]

print("head:",head,"tail:", tail) // head: 11/Passion tail: 01PassionAwakening.mp3
} else {
print("path should not be an empty string!")
}

You can separate your url into two parts like so:


let str : NSString = "www.music.com/Passion/PassionAwakening.mp3"
let path : NSString = str.stringByDeletingLastPathComponent
let ext : NSString = str.lastPathComponent

print(path)
print(ext)

#Output

[To see links please register here]

PassionAwakening.mp3

For more info please have a look at [this link][1].


[1]:

[To see links please register here]

Just improvised the solution for URL String. Thank you so much ingconti

extension String {

var ns: URL? {
return URL.init(string: self)
}

var pathExtension: String {
return ns?.pathExtension ?? ""
}

var lastPathComponent: String {
return ns?.lastPathComponent ?? ""
}

var stringByDeletingLastPathComponent: String {
return ns?.deletingLastPathComponent().absoluteString ?? ""
}
}

rolling back to NSString:





extension String {

var ns: NSString {
return self as NSString
}

var pathExtension: String {
return ns.pathExtension
}

var lastPathComponent: String {
return ns.lastPathComponent
}

var stringByDeletingLastPathComponent: String {
return ns.deletingLastPathComponent
}

}


so you can do:

let folderPath = pathString.stringByDeletingLastPathComponent

This works for Swift 3.0 as well:

let fileName = NSString(string: "11/Passion/01PassionAwakening.mp3").lastPathComponent

Swift 3.0 version

if !str.isEmpty {
let components = str.characters.split(separator: "/")
let head = components.dropLast(1).map(String.init).joined(separator: "/")
let words = components.count-1
let tail = components.dropFirst(words).map(String.init)[0]

print("head:",head,"tail:", tail) // head: 11/Passion tail: 01PassionAwakening.mp3
} else {
print("path should not be an empty string!")
}