package python.io;

import haxe.io.Output;

import python.lib.Builtin;
import python.lib.io.IOBase;
import python.lib.io.RawIOBase;

class NativeOutput extends Output{

	var stream:RawIOBase;

	public var canSeek(get_canSeek, null):Bool;

	public function new (stream:RawIOBase) {
		this.stream = stream;
		if (!stream.writable()) throw "Read only stream";
	}

	private function get_canSeek():Bool
	{
		return stream.seekable();
	}

	override public function close():Void
	{
		stream.close();
	}

	public function tell() : Int
	{
		return stream.tell();
	}



	public function seek( p : Int, pos : sys.io.FileSeek ) : Void
	{
		var pos = switch(pos)
		{
			case SeekBegin: SeekSet.SeekStart;
			case SeekCur: SeekSet.SeekCur;
			case SeekEnd: SeekSet.SeekEnd;
		};
		stream.seek(p, pos);
	}

	override public function prepare(nbytes:Int):Void
	{
		stream.truncate(nbytes);
	}

	override public function flush():Void
	{
		stream.flush();
	}

	override public function writeByte(c:Int):Void
	{
		stream.write(Builtin.bytearray([c]));
	}
}