Convert Filesize Bytes to Readable String [AS3]

...
@author djankey
converted from JavaScript ("Convert Filesize Bytes to Readable String in Javascript")
Original JavaScript: http://web.elctech.com/2009/01/06/convert-filesize-bytes-to-readable-string-in-javascript/

by djankey 07 Apr 2010

Tags

bytes, convert, filesize, readable, string
Embed

package 
{
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.text.TextField;
	import flash.text.TextFieldType;
	import flash.text.TextFormat;
	import flash.events.MouseEvent;
	
	/**
	 * ...
	 * @author djankey
	 * converted from JavaScript ("Convert Filesize Bytes to Readable String in Javascript")
	 * Original JavaScript: http://web.elctech.com/2009/01/06/convert-filesize-bytes-to-readable-string-in-javascript/
	 */
	 
	public class Main extends Sprite
	{
		private var inputTxt: TextField;
		private var outputTxt: TextField;
		
		
		public function Main():void 
		{
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init(e:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			
			// label font type
			var labelFormat:TextFormat = new TextFormat();
				labelFormat.font = "Arial";
				labelFormat.color = 0x333333;
				labelFormat.size = 14;
				
			// dynamic/input font type
			var format:TextFormat = new TextFormat();
				format.font = "Arial";
				format.color = 0xffffff;
				format.size = 14;
			
			
				
			// label input
			var inputLabel:TextField = new TextField();
			inputLabel.x = 50;
			inputLabel.y = 170;
			inputLabel.defaultTextFormat = labelFormat;
			inputLabel.text = "bytes [*input]";			
			addChild(inputLabel);
			

			// input
			inputTxt = new TextField();
			inputTxt.x = 50;
			inputTxt.y = 192;
			inputTxt.defaultTextFormat = format;
			inputTxt.background = true;
			inputTxt.backgroundColor = 0x333333;
			inputTxt.textColor = 0xffffff;
			inputTxt.width = 120;
			inputTxt.height = 19;
			inputTxt.restrict = "0-9";
			inputTxt.text = "1073741824";
			inputTxt.type =  TextFieldType.INPUT;			
			addChild(inputTxt);
			
			
			
			// output label
			var outputLabel:TextField = new TextField();
			outputLabel.x = 300;
			outputLabel.y = 170;
			outputLabel.defaultTextFormat = labelFormat;
			outputLabel.text = "readable string";		
			addChild(outputLabel);
			
			
			// output
			outputTxt = new TextField();
			outputTxt.x = 300;
			outputTxt.y = 192;
			outputTxt.defaultTextFormat = format;
			outputTxt.background = true;
			outputTxt.backgroundColor = 0x333333;
			outputTxt.width = 120;
			outputTxt.height = 19;
			addChild(outputTxt);
			
			
			// button
			var button:Sprite = new Sprite();
			button.graphics.beginFill(0x99cc00);
			button.graphics.drawRoundRect(185, 190, 100, 24,12);
			button.graphics.endFill();
			button.buttonMode = true;
			button.mouseChildren = false;
			addChild(button);
			
			button.addEventListener(MouseEvent.MOUSE_UP,  mouseUp);
			
			
			// button label
			var buttonLabel:TextField = new TextField();
			buttonLabel.x = 195;
			buttonLabel.y = 192;
			buttonLabel.defaultTextFormat = format;
			buttonLabel.selectable = false;
			buttonLabel.text = "CONVERT!";
			button.addChild(buttonLabel);			
			
			
			
			// fist time run
			outputTxt.text = readableBytes(Number(inputTxt.text));	
		}
		
		
		private function mouseUp(e:MouseEvent):void 
		{
			outputTxt.text = readableBytes(Number(inputTxt.text));		
		}
		
		private function readableBytes(bytes:Number):String
		{
			var s:Array = ['bytes', 'kb', 'MB', 'GB', 'TB', 'PB'];
			var exp:Number = Math.floor(Math.log(bytes)/Math.log(1024));
			return  (bytes / Math.pow(1024, Math.floor(exp))).toFixed(2) + " " + s[exp];
		}
	}
	
}