Illustrator plot file

gistfile1.js

activeDoc();

//multiplicateur, changer la valeur si désiré
var multiplier = "1";

function activeDoc() {
	if (app.documents.length == 0) {
		alert("No document open");
		return;
	} else {
		//remove black
			try {
				app.activeDocument.swatches.getByName("Black").remove();
			}
			catch (e){}
		//add Black swatch
		addBlack ();
		//replace spot color by rgb value
		replaceGlobalColor();   
	}
}

function addBlack () {
	var newSwatch = app.activeDocument.swatches.add();
	newSwatch.name = "Black";
	newSwatch.gray = 100;
}

function replaceGlobalColor() {
	var doc, count, rgb, value, swat;
	doc = app.activeDocument, count = doc.spots.length;
	for ( var i = 0; i < count; i++ ) {
		if ( doc.spots[i].colorType == ColorModel.PROCESS ) {
			value = doc.spots[i].getInternalColor();
			swat = doc.swatches.add();
			swat.name = doc.spots[i].name;
			rgb = new RGBColor();
			rgb.red = value[0];
			rgb.green = value[1];
			rgb.blue = value[2];
 
			swat.color = rgb;
		};
	};
	if ( count > 0 ) { doc.spots.removeAll(); }
 };