Question

I want to prevent users from using webcam emulators, I have done that in AS2 by using senocular’s function, but I can’t make it work in AS3,so, here is the old version by senocular , and I would like to do the same in AS3, tried using indexOf but doesn’t work, I need to find at least the first 4 characters of the string and compare them to the item inside the array in AS3!

String.prototype.startsWith = function(str){
        return !this.indexOf(str);
    }

here is what I want to do:

var bannedDevices = new Array("FakeCam","SplitCam","Phillips Capture Card 7xx","VLC");

var myDeviceName = "SplitCam v1.5";  //"Splitcam" in bannedDevices should trigger this;

if (myDeviceName.indexOf(bannedDevices)){
   trace("banned device");
}

Thanks for the help !

Answer 1

OK, I leave my previous answer for history. Now that i’ve understood what you want:

public function FlashTest() {
    var bannedDevices:Array = new Array("FakeCam","SplitCam","Phillips Capture Card 7xx","VLC");

    var myDeviceName:String = "SplitCam v1.5";  //"Splitcam" in bannedDevices should trigger this;

    trace(startsWith(myDeviceName, bannedDevices, 4));
}

/**
* @returns An array of strings in pHayStack beginning with pLength first characters of pNeedle
*/
private function startsWith(pNeedle:String, pHayStack:Array, pLength:uint):Array
{
    var result:Array = [];
    for each (var hay:String in pHayStack)
    {
        if (hay.match("^"+pNeedle.substr(0,pLength)))
        {
            result.push(hay);
        }
    }
    return result;
}