History/tab completion for Neko programs

gistfile1.hx

class Main
{
	public static function main()
	{
		print(">> ");

		var position = -1;
		var history = [];
		var input = "";

		while (true)
		{
			var char = neko.io.File.getChar(false);

			switch (char)
			{
				case 27, 91: // ignore
				case 65, 66: // up/down
				var index = char == 65 ? position + 1 : position - 1;
				if (index > -1 && index < history.length)
				{
					position = index;

					for (i in 0...input.length) backspace();
					input = history[position];
					print(input);
				}
				else
				{
					bell();
				}
				case 67, 68: // down, right, left

				case 127: // backspace
				if (input.length > 0)
				{
					backspace();
					input = input.substr(0, -1);
				}

				case 9: // tab
				var completions = ["oranges", "apples", "pears"];
				for (completion in completions)
				{
					if (StringTools.startsWith(completion, input))
					{
						print(completion.substr(input.length));
						input = completion;
						break;
					}
				}

				case 13: // enter
				print("\n");

				if (input == "" && history.length > 0)
				{
					input = history[position];
				}
				else
				{
					history = history.slice(position + 1);
					history.unshift(input);
				}

				print("[execute] " + input + "\n");
				
				print(">> ");
				input = "";
				position = -1;

				case 3: break; // kill
				default: 
				print(String.fromCharCode(char));
				input += String.fromCharCode(char);
			}
		}
	}

	static function print(message:String)
	{
		neko.Lib.print(message);
	}

	static function backspace()
	{
		neko.io.File.stdout().writeByte(0x08);
		neko.io.File.stdout().writeString(" ");
		neko.io.File.stdout().writeByte(0x08);
	}

	static function bell()
	{
		neko.io.File.stdout().writeByte(0x07);
	}
}

Test with:
$ haxe -x Main