objective-c – 从Cocoa应用程序创建ZIP存档

概述Objective-C类是否与Java包java.util.zip中包含的类相同？ 是执行CLI命令的唯一选择吗？ 从iOS8 / OSX10.10开始,有一种使用NSFileCoordinatorReadingOptions.ForUploading创建zip存档的内置方法.创建没有任何非Cocoa依赖项的zip压缩文件的简单示例： public extension NSURL { / Objective-C类是否与Java包java.util.zip中包含的类相同？
是执行Cli命令的唯一选择吗？解决方法 从iOS8 / OSX10.10开始,有一种使用NSfileCoordinatorReadingOptions.ForUploading创建zip存档的内置方法.创建没有任何非Cocoa依赖项的zip压缩文件的简单示例：

public extension NSURL {    /// Creates a zip archive of the file/folder represented by this URL and returns a references to the zipped file    ///    /// - parameter dest: the destination URL; if nil,the destination will be this URL with ".zip" appended    func zip(dest: NSURL? = nil) throws -> NSURL {        let destURL = dest ?? self.URLByAppendingPathExtension("zip")        let fm = NSfileManager.defaultManager()        var isDir: ObjCBool = false        let srcDir: NSURL        let srcDirIstemporary: Bool        if let path = self.path where self.fileURL && fm.fileExistsAtPath(path,isDirectory: &isDir) && isDir.boolValue == true {            // this URL is a directory: just zip it in-place            srcDir = self            srcDirIstemporary = false        } else {            // otherwise we need to copy the simple file to a temporary directory in order for            // NSfileCoordinatorReadingOptions.ForUploading to actually zip it up            srcDir = NSURL(fileURLWithPath: NstemporaryDirectory()).URLByAppendingPathComponent(NSUUID().UUIDString)            try fm.createDirectoryAtURL(srcDir,withIntermediateDirectorIEs: true,attributes: nil)            let tmpuRL = srcDir.URLByAppendingPathComponent(self.lastPathComponent ?? "file")            try fm.copyItemAtURL(self,toURL: tmpuRL)            srcDirIstemporary = true        }        let coord = NSfileCoordinator()        var error: NSError?        // coordinateReadingItemAtURL is invoked synchronously,but the passed in zippedURL is only valID         // for the duration of the block,so it needs to be copIEd out        coord.coordinateReadingItemAtURL(srcDir,options: NSfileCoordinatorReadingOptions.ForUploading,error: &error) { (zippedURL: NSURL) -> VoID in            do {                try fm.copyItemAtURL(zippedURL,toURL: destURL)            } catch let err {                error = err as NSError            }        }        if srcDirIstemporary { try fm.removeItemAtURL(srcDir) }        if let error = error { throw error }        return destURL    }}public extension NSData {    /// Creates a zip archive of this data via a temporary file and returns the zipped contents    func zip() throws -> NSData {        let tmpuRL = NSURL(fileURLWithPath: NstemporaryDirectory()).URLByAppendingPathComponent(NSUUID().UUIDString)        try self.writetoURL(tmpuRL,options: NSDataWritingOptions.DataWritingAtomic)        let zipURL = try tmpuRL.zip()        let fm = NSfileManager.defaultManager()        let zippedData = try NSData(contentsOfURL: zipURL,options: NSDataReadingOptions())        try fm.removeItemAtURL(tmpuRL) // clean up        try fm.removeItemAtURL(zipURL)        return zippedData    }}

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