保存NSImage到文件

@IBAction func SaveImage(_ sender: Any) {
    if resuleImage.image != nil {
        let savePanel = NSSavePanel.init()
        savePanel.allowedFileTypes = [(captureFilePath?.pathExtension)!]
        savePanel.message = "Choose the path to save the image"
        savePanel.isExtensionHidden = false
        savePanel.directoryURL = captureFilePath?.deletingLastPathComponent()
        savePanel.begin(completionHandler: { (result) in
            if result == NSFileHandlingPanelOKButton{
                
                let bMImg = NSBitmapImageRep(data: (self.resuleImage?.image?.tiffRepresentation)!)
                let type = self.captureFilePath?.pathExtension == "jpg" ? NSBitmapImageFileType.JPEG : NSBitmapImageFileType.PNG
                let dataToSave = bMImg?.representation(using: type, properties: [NSImageCompressionFactor : 1])
                do{
                    try dataToSave?.write(to: savePanel.url!)
                }catch {
                    debugPrint("save file error")
                }
            }
        })
    }
}