(Swift) Zip a Directory Tree
      
      Demonstrates how to zip an entire directory tree into a .zip archive. 
		
 
      
func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    let zip = CkoZip()!
    var success: Bool = zip.newZip("test.zip")
    if success != true {
        print("\(zip.lastErrorText!)")
        return
    }
    // Append a directory tree.  The call to AppendFiles does
    // not read the file contents or append them to the zip
    // object in memory.  It simply appends references
    // to the files so that when WriteZip or WriteZipAndClose 
    // is called, the referenced files are streamed and compressed
    // into the .zip output file.
    var recurse: Bool = true
    success = zip.appendFiles("c:/temp/a/*", recurse: recurse)
    if success != true {
        print("\(zip.lastErrorText!)")
        return
    }
    success = zip.writeAndClose()
    if success != true {
        print("\(zip.lastErrorText!)")
        return
    }
    print("Zip Created!")
}
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