NSFileManager fileExistsAtPath:isDirectory and swift

Question

I'm trying to understand how to use the function fileExistsAtPath:isDirectory: with Swift but I get completely lost.

This is my code example:

var b:CMutablePointer<ObjCBool>?

if (fileManager.fileExistsAtPath(fullPath, isDirectory:b! )){
    // how can I use the "b" variable?!
    fileManager.createDirectoryAtURL(dirURL, withIntermediateDirectories: false, attributes: nil, error: nil)
}

I can't understand how can I access the value for the b MutablePointer. What If I want to know if it set to YES or NO?

Answer 1

The second parameter has the type UnsafeMutablePointer<ObjCBool>, which means that you have to pass the address of an ObjCBool variable. Example:

var isDir : ObjCBool = false
if fileManager.fileExistsAtPath(fullPath, isDirectory:&isDir) {
    if isDir {
        // file exists and is a directory
    } else {
        // file exists and is not a directory
    }
} else {
    // file does not exist
}

Update for Swift 3 and Swift 4:

let fileManager = FileManager.default
var isDir : ObjCBool = false
if fileManager.fileExists(atPath: fullPath, isDirectory:&isDir) {
    if isDir.boolValue {
        // file exists and is a directory
    } else {
        // file exists and is not a directory
    }
} else {
    // file does not exist
}