swift - 使用 Swift 替换文件系统中的文件夹

Question

如何在 OS X 上使用 Swift 复制并粘贴文件夹的全部内容？如果destinationPath已经包含该文件夹，那么它应该替换它。

我试过了

let appSupportSourceURL = NSURL(string: appSupportSourcePath)
        let appSupportDestinationURL = NSURL(string: appSupportDestinationPath+"/"+appSupportFileName)

        if (fileManager.isReadableFileAtPath(appSupportSourcePath)){
            do {
            try fileManager.copyItemAtURL(appSupportSourceURL!, toURL: appSupportDestinationURL!)}
            catch{   
            }
        }

但我意识到，这只适用于文件。我正在尝试替换整个文件夹。

Answer 1

我知道 Apple 鼓励新代码使用 URL 来指定文件系统路径。然而 NSFileManager 是一个旧类，它仍在旧的基于字符串的路径和新的基于 URL 的范例之间转换。试试这个:

let appSupportSourcePath = "..."
let appSupportDestinationPath = "..."

let fileManager = NSFileManager.defaultManager()
do {
    // Delete if already exists
    if fileManager.fileExistsAtPath(appSupportDestinationPath) {
        try fileManager.removeItemAtPath(appSupportDestinationPath)
    }
    try fileManager.copyItemAtPath(appSupportSourcePath, toPath: appSupportDestinationPath)

} catch {
    print(error)
}

<小时/>

编辑:方法与NSURL

let appSupportSourceURL = NSURL(fileURLWithPath: "...", isDirectory: true)
let appSupportDestionURL = NSURL(fileURLWithPath: "...", isDirectory: true)

try! NSFileManager.defaultManager().copyItemAtURL(appSupportSourceURL, toURL: appSupportDestionURL)