NSURLIsExcludedFromBackupKeyがtrueなものをリストアップする

printExcludedFromBackup.swift

#!/usr/bin/env xcrun swift

import Cocoa

extension NSURL {
    var isDirectory: Bool {
        return resourceValue(NSURLIsDirectoryKey)
    }
    var isExcludedFromBackup: Bool {
        return resourceValue(NSURLIsExcludedFromBackupKey)
    }
    func resourceValue(resourceKey: NSString) -> Bool {
        var resourceValue: AnyObject?
        var error: NSError?
        var result = false
        if getResourceValue(&resourceValue, forKey: resourceKey, error: &error) {
            if let number = resourceValue as? NSNumber {
                result = number.boolValue
            } else {
                println("error: \(self) for key: \(resourceKey)")
            }
        } else {
            println("error: \(error?.localizedDescription) on \(self) for key: \(resourceKey)")
        }
        return result
    }
}

func printExcludedFromBackupContentsAtURL(targetURL: NSURL) {
    let keys = [NSURLIsDirectoryKey, NSURLIsExcludedFromBackupKey] as [AnyObject]
    var error: NSError?
    if let contents = NSFileManager.defaultManager().contentsOfDirectoryAtURL(targetURL, includingPropertiesForKeys: keys, options: nil, error: &error) as? [NSURL] {
        for url in contents {
            if url.isExcludedFromBackup {
                println(url.path!)
            } else if url.isDirectory {
                printExcludedFromBackupContentsAtURL(url)
            }
        }
    } else {
        println("\(targetURL.path!): \(error!.localizedDescription)")
    }
}

var path = Process.arguments.count > 1 ? Process.arguments[1] : NSFileManager.defaultManager().currentDirectoryPath
if let url = NSURL(fileURLWithPath: path) {
    printExcludedFromBackupContentsAtURL(url)
}