我正在尝试设置取景器显示的彩色标签.我所知道的唯一功能是setResourceValue.但这需要本地化的名称！
我可以想象我的母语和英语,但我不知道所有其他人.我不敢相信,这应该是这样的.
是翻译函数,它采用像enum或int这样的标准参数并提供本地化的颜色名称？
我有一个正在运行的部分,但只有两种语言(德语和英语)：
let colorNamesEN = [ "None","Gray","Green","Purple","Blue","Yellow","Red","Orange" ]
let colorNamesDE = [ "","Grau","Grün","Lila","Blau","Gelb","Rot","Orange" ]
public enum TagColors : Int8 {
case None = -1,Gray,Green,Purple,Blue,Yellow,Red,Orange,Max
}
//let theURL : NSURL = NSURL.fileURLWithPath("/Users/dirk/Documents/MyLOG.txt")
extension NSURL {
// e.g. theURL.setColors(0b01010101)
func tagColorValue(tagcolor : TagColors) -> UInt16 {
return 1 << UInt16(tagcolor.rawValue)
}
func addTagColor(tagcolor : TagColors) -> Bool {
let bits : UInt16 = tagColorValue(tagcolor) | self.getTagColors()
return setTagColors(bits)
}
func remTagColor(tagcolor : TagColors) -> Bool {
let bits : UInt16 = ~tagColorValue(tagcolor) & self.getTagColors()
return setTagColors(bits)
}
func setColors(tagcolor : TagColors) -> Bool {
let bits : UInt16 = tagColorValue(tagcolor)
return setTagColors(bits)
}
func setTagColors(colorMask : UInt16) -> Bool {
// get string for all available and requested bits
let arr = colorBitsToStrings(colorMask & (tagColorValue(TagColors.Max)-1))
do {
try self.setResourceValue(arr,forKey: NSURLTagNamesKey)
return true
}
catch {
print("Could not write to file \(self.absoluteURL)")
return false
}
}
func getTagColors() -> UInt16 {
return getAllTagColors(self.absoluteURL)
}
}
// let initialBits: UInt8 = 0b00001111
func colorBitsToStrings(colorMask : UInt16) -> NSArray {
// translate bits to (localized!) color names
let countryCode = NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)!
// I don't know how to automate it for all languages possible!!!!
let colorNames = countryCode as! String == "de" ? colorNamesDE : colorNamesEN
var tagArray = [String]()
var bitNumber : Int = -1 // ignore first loop
for colorName in colorNames {
if bitNumber >= 0 {
if colorMask & UInt16(1<<bitNumber) > 0 {
tagArray.append(colorName)
}
}
bitNumber += 1
}
return tagArray
}
func getAllTagColors(file : NSURL) -> UInt16 {
var colorMask : UInt16 = 0
// translate (localized!) color names to bits
let countryCode = NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)!
// I don't know how to automate it for all languages possible!!!!
let colorNames = countryCode as! String == "de" ? colorNamesDE : colorNamesEN
var bitNumber : Int = -1 // ignore first loop
var tags : AnyObject?
do {
try file.getResourceValue(&tags,forKey: NSURLTagNamesKey)
if tags != nil {
let tagArray = tags as! [String]
for colorName in colorNames {
if bitNumber >= 0 {
// color name listed?
if tagArray.filter( { $0 == colorName } ).count > 0 {
colorMask |= UInt16(1<<bitNumber)
}
}
bitNumber += 1
}
}
} catch {
// process the error here
}
return colorMask
}
历史
首先是我之前的答案,它适用于将一个颜色标签设置为文件：https://stackoverflow.com/a/39751001/2227743.
然后@mz2发布了这个优秀的答案,成功地为文件设置了几个颜色标签并解释了这个过程：https://stackoverflow.com/a/40314367/2227743.
现在这个小插件,一个简单的follow-up到@ mz2的答案.
解
我只是简单地实现了@ mz2的建议：我已经使用获取Finder首选项的方法扩展了他的枚举示例,并在将属性设置到文件之前提取了正确的本地化标签颜色名称.
enum LabelColors: Int {
case none
case gray
case green
case purple
case blue
case yellow
case red
case orange
func label(using list: [String] = []) -> String? {
if list.isEmpty || list.count < 7 {
switch self {
case .none: return nil
case .gray: return "Gray\n1"
case .green: return "Green\n2"
case .purple: return "Purple\n3"
case .blue: return "Blue\n4"
case .yellow: return "Yellow\n5"
case .red: return "Red\n6"
case .orange: return "Orange\n7"
}
} else {
switch self {
case .none: return nil
case .gray: return list[0]
case .green: return list[1]
case .purple: return list[2]
case .blue: return list[3]
case .yellow: return list[4]
case .red: return list[5]
case .orange: return list[6]
}
}
}
static func set(colors: [LabelColors],to url: URL,using list: [String] = []) throws
{
// 'setExtendedAttributeData' is part of https://github.com/billgarrison/SOExtendedAttributes
try (url as NSURL).setExtendedAttributeData(propertyListData(labels: colors,using: list),name: "com.apple.metadata:_kMDItemUserTags")
}
static func propertyListData(labels: [LabelColors],using list: [String] = []) throws -> Data
{
let labelStrings = labels.flatMap { $0.label(using: list) }
return try PropertyListSerialization.data(fromPropertyList: labelStrings,format: .binary,options: 0)
}
static func localizedLabelNames() -> [String] {
// this doesn't work if the app is Sandboxed:
// the users would have to point to the file themselves with NSOpenPanel
let url = URL(fileURLWithPath: "\(NSHomeDirectory())/Library/SyncedPreferences/com.apple.finder.plist")
let keyPath = "values.FinderTagDict.value.FinderTags"
if let d = try? Data(contentsOf: url) {
if let plist = try? PropertyListSerialization.propertyList(from: d,options: [],format: nil),let pdict = plist as? NSDictionary,let ftags = pdict.value(forKeyPath: keyPath) as? [[AnyHashable: Any]]
{
var list = [(Int,String)]()
// with '.count == 2' we ignore non-system labels
for item in ftags where item.values.count == 2 {
if let name = item["n"] as? String,let number = item["l"] as? Int {
list.append((number,name))
}
}
return list.sorted { $0.0 < $1.0 }.map { "\($0.1)\n\($0.0)" }
}
}
return []
}
}
用法：
do {
// default English label names
try LabelColors.set(colors: [.yellow,.red],to: fileURL)
// localized label names
let list = LabelColors.localizedLabelNames()
try LabelColors.set(colors: [.green,.blue],to: fileURL,using: list)
} catch {
print("Error when setting label color(s): \(error)")
}
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