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How to create an Empty Playlist File on Mac?

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Hello everyone, I'm working on a Music Player script, I was able to play a file via the default player as when we doubleclick on a file. The problem is I have no control over the Player, so to "stop" a file I could play a "silent" mp3, one with 1 second of silence in it for example. I discarded the idea since I had to distribute this silent.mp3 file along with the script. A better option is to play a "playlist", since playlist files are text only, I could create them an empty playlist file on the fly...

 

so, the question is, what's the default playlist extension on a mac? and how to create one on the Mac?

 

in windows the default player is Windows Media Player, the default playlist file extension is *.wpl.

 

here's the contents of an empty playlist

<?wpl version="1.0"?><smil>    <head>        <meta name="Generator" content="Microsoft Windows Media Player -- 12.0.7601.18150"/>        <meta name="ItemCount" content="0"/>        <title>empyPlaylist</title>    </head></smil>

 

here's the script, so far Windows only, at least to stop the file being played.

 

//  script.name = musicPlayer_Windows.jsx;
//  script.needs = I need to create an Empty Playlist File for the Mac, that will play on the default music player when executed


// carlos canto, 10/12/2014


var w = new Window('dialog', 'Music Player');


var btnFile = w.add('button', undefined, 'Select an *.mp3 file to play...');
var lblSong = w.add('edittext', undefined, '');
lblSong.characters = 30;


var btnPlay = w.add('button', undefined, 'Play');
var btnStop = w.add('button', undefined, 'Stop');
var btnClose = w.add('button', undefined, 'Close');


btnPlay.enabled = btnStop.enabled = false;


var emptyPlaylist = getEmptyPlaylist ();


btnFile.onClick = function () {
    var file = File.openDialog ("Select File to Play...", '*.mp3', false);    lblSong.text = file.displayName;    lblSong.file = file;    btnPlay.enabled = btnStop.enabled = true;
}
btnPlay.onClick = function () {    lblSong.file.execute();    $.sleep (300);    BridgeTalk.bringToFront('estoolkit');
}
btnStop.onClick = function () {    emptyPlaylist.execute();    $.sleep (300);    BridgeTalk.bringToFront('estoolkit');
}
btnClose.onClick = function () {    w.close();
}
w.show();




// this function creates an Empty Playlist file (Windows) on the fly, this file will be used to "stop" a playing file
// I need a similar function for Mac
function getEmptyPlaylist () {
    var desk = Folder.desktop;    var f = new File(desk+'/emptyPlaylist.wpl');    if (!f.exists) {        var s_emptyPlaylist = (new String("<?wpl version=\"1.0\"?>\n<smil>\n    <head>\n        <meta name=\"Generator\" content=\"Microsoft Windows Media Player -- 12.0.7601.18150\"/>\n        <meta name=\"ItemCount\" content=\"0\"/>\n        <title>empyPlaylist</title>\n    </head>\n</smil>\n"));        f.encoding = 'utf-8';        f.open('w');        f.write(eval(s_emptyPlaylist));        f.close();    }    return f;
}

   

 

thanks in advance

Carlos


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