insert text overlays at timestamps in after effects from text file input

insert_text_overlay_at_timestamps.jsx

/**
* Modified from:
SRT subtitle import for AE CS5
By August Bering

*/

/*
example text file input containing:
0:15
hello

0:23
world

0:35
!!!
*/
function makeSubs() {
    function getframe(timeInString){
        
        var t=timeInString.split(":");
        
        var timeS=parseInt(t[0])*60+parseInt(t[1]);
        var frame=timeS*25;
        var duration = 3; // duration for text to show
        
        return timeS;
    }
    var pb=progressBar("Creating keyframes",);
    var layer = app.project.activeItem.selectedLayers[0];
    
    if (layer.property("sourceText") != null) {
        var textFile = File.openDialog("Select a text file to open.", "text file:*.txt");
        if (textFile != null) {
            var textLines = new Array();
            textFile.open("r", "TEXT", "????");
            
            
            var sourceText = layer.property("sourceText");
            var subnr=0;
            var nrSubs=0;
            while (!textFile.eof) {
                if (""==textFile.readln())
                nrSubs++;
            }
            textFile.seek(0);
            //begin with empty text
            sourceText.setValueAtTime(0,"");
            while (!textFile.eof) {
                pb.setValue(subnr/nrSubs);
                //                    $.sleep(1);
                pb.p.update();
                if (pb.isCanceled ()){//for some reason this doesn't work at all, the window is unresponsive...
                pb.close();
                return;
            }
            
            subnr++;
            var line = textFile.readln();
            
            var times=line;
            var starttime=getframe(times);
            var stoptime=starttime+duration;
            
            var text=""
            while ((line= textFile.readln())!=""){
                text+=line+"\r\n";
                
            }
            sourceText.setValueAtTime(starttime,text);
            sourceText.setValueAtTime(stoptime,"");
        }
        
        textFile.close();
        pb.close();
    }
}
}

/*
Easy to use progress bar for ExtendScript.
Written by [email protected], 2007
Enjoy, but this credit must remain intact.

>usage:

> var pb = progressBar("main title","subtitle");
pb.setValue(valueFrom0to1);
pb.setTitle2("new subtitle display!")
if(pb.isCanceled())
pb.close(); // they clicked cancel
*/
function progressBar(title1)
{
    var result = new Object();
    result.running = true;
    result.p = new Window("palette");
    result.p.orientation = "column";
    result.p.alignChildren = "left";
    
    result.t1 = result.p.add("statictext",undefined,title1);
    result.b = result.p.add("progressbar");
    
    result.c = result.p.add("button",undefined,"Cancel");
    result.c.onClick = function() {
        this.running = false;
    }
    
    result.isRunning = function() { return this.running; }
    result.isCanceled = function() { return !this.isRunning(); }
    result.setValue = function(x) { this.b.value = x * 100; }
    result.setTitle1 = function(t1) { this.t1.text = t1; }
    result.close = function() { this.p.close(); }
    
    result.p.show();
    return result;
} 
makeSubs();