Rename for Adobe Photoshop Artboards

artboard[i].name = artboardWidth+'x'+artboardHeight;

#target photoshop
//#include json2.js

var doc = app.activeDocument;
var targetPath = new File($.fileName);
var logFile = new File(targetPath.path + '/log.txt');

logFile.encoding = 'UTF8';
if (logFile.exists)
	logFile.remove();
logFile.open('w');
log('Log file created.', logFile);

var savePath = targetPath.path+'/Examples';
var saveName = doc.name.replace('.psd','');

var newpath = targetPath.fsName;
newpath = newpath.replace('\renameArtboards.jsx','');

var artboard = doc.layerSets;

for (var i = 0; i < artboard.length; i++) {

    var prop = stringIDToTypeID("bounds");
    var r = new ActionReference();    
    r.putProperty(stringIDToTypeID("property"), prop);
    r.putIdentifier(stringIDToTypeID("layer"), artboard[i].id);
    var d = executeActionGet(r).getObjectValue(prop);
    var bounds = new Array();
    bounds[0] = d.getUnitDoubleValue(stringIDToTypeID("left"));  
    bounds[1] = d.getUnitDoubleValue(stringIDToTypeID("top"));  
    bounds[2] = d.getUnitDoubleValue(stringIDToTypeID("right"));
    bounds[3] = d.getUnitDoubleValue(stringIDToTypeID("bottom"));

    artboardWidth = bounds[2] - bounds[0];  
    artboardHeight = bounds[3] - bounds[1];

    // artboard[i].name = 'Artboard '+i;

    var gcd = gcd_rec(artboardWidth,artboardHeight);

    var ratio = new Array();
    ratio[0] = artboardWidth/gcd;
    ratio[1] = artboardHeight/gcd;

    // log(artboardWidth+':'+artboardHeight, logFile)
    // log(ratio[0]+':'+ratio[1], logFile)

    artboard[i].name = artboardWidth+'x'+artboardHeight+'_'+doc.name.replace('.psd','');

}

function gcd_rec(a, b) {
    if (b) {
        return gcd_rec(b, a % b);
    } else {
        return Math.abs(a);
    }
}


function loadJson(relPath){
	var script = new File($.fileName);
	var jsonFile = new File(script.path + '/' + relPath);
	jsonFile.open('r');
	var str = jsonFile.read();
	jsonFile.close();
	log('JSON File Read.', logFile);
	return JSON.parse(str);
}

function log(message, file){
	var time = new Date();
	file.write(('0' + time.getHours()).slice(-2) + ':' + ('0' + time.getMinutes()).slice(-2) + ':' + ('0' + time.getSeconds()).slice(-2));
	file.write('  >>>>> ' + message);
	file.writeln('');
}