Implement the StreamWritable

[zero2hex]

Changes

• Implement the StreamWritable
• Modify the Buffer initializer

Examples

Writable Stream

public class Writer: StreamWritable {
    var data = [Int8]()

    override func _write(chunk: Buffer, encoding: NSStringEncoding?, callback: writableCallback) {
        data.appendContentsOf(chunk.data)
        print("Adding: \(NSString(bytes: data, length: data.count, encoding: NSUTF8StringEncoding)!)")
        callback(nil)
    }
}

func onFinish() {
    print("finish!!")
}

let writer = Writer()
writer.on("finish", onFinish)

for item in ["Hello ", "World ", "on ", "SWIFT"] {
    writer.write(item)
}
writer.end("...!")

print(NSString(bytes: writer.data, length: writer.data.count, encoding: NSUTF8StringEncoding)!)

Result

Adding: Hello 
Adding: Hello World 
Adding: Hello World on 
Adding: Hello World on SWIFT
Adding: Hello World on SWIFT...!
finish!!
Hello World on SWIFT...!