I'm trying to display data on available disks. One of the things I want to display is its File System Type. What should I add to this piece of code:\

extension FileManager {
    static var mountedVolumes: [URL] {
        (FileManager.default.mountedVolumeURLs(includingResourceValuesForKeys: nil) ?? []).filter({$0.path.hasPrefix("/Volumes/")})
    }
}

extension URL {
    var volumeTotalCapacity: Int? {
        (try? resourceValues(forKeys: [.volumeTotalCapacityKey]))?.volumeTotalCapacity
    }
    var volumeAvailableCapacityForImportantUsage: Int64? {
        (try? resourceValues(forKeys: [.volumeAvailableCapacityForImportantUsageKey]))?.volumeAvailableCapacityForImportantUsage
    }
    var name: String? {
        (try? resourceValues(forKeys: [.nameKey]))?.name
    }
}

for url in FileManager.mountedVolumes {
    print("")
    print(url.name ?? "Untitled")
    print("Capacity:", url.volumeTotalCapacity ?? "nil")
    print("Available:", url.volumeAvailableCapacityForImportantUsage ?? "nil")
    print("File System type:", url.isFileURL)
    //print("File System Type:", )
}

CodePudding user response：

You should use the URLResourceKey volumeLocalizedFormatDescriptionKey to get the disk file system

let fileManager = FileManager.default
let resourceKeys: [URLResourceKey] = [.volumeNameKey, .volumeLocalizedFormatDescriptionKey]

if let volumes = fileManager.mountedVolumeURLs(includingResourceValuesForKeys: resourceKeys, options: .skipHiddenVolumes) {
    for volume in volumes {
        if let resources = try? volume.resourceValues(forKeys: Set(resourceKeys)), 
           let name = resources.volumeName, 
           let format = resources.volumeLocalizedFormatDescription {
            print("\(name), format: \(format)")
        }
    }
}

Example from my machine with an external drive and a SD card attached

Macintosh HD, format: APFS
Bilder-Arkiv, format: Mac OS Extended (Journaled)
LEICA M9, format: MS-DOS (FAT32)