Add song metadata to a cue sheet using XML from Musicbrainz

cue.js

(function(){
	var document = require("jsdom").jsdom(require("fs").readFileSync(process.argv[2])),
	cue = require("fs").readFileSync(process.argv[3]).toString().split("\n"),

	discTitle = document.getElementsByTagName("release")[0].getElementsByTagName("title")[0].textContent, artists = "", titles = [],
	medium = document.getElementsByTagName("medium"),
	tracks, credits, discNo = process.argv.length > 4 ? parseInt(process.argv[4], 10) - 1 : 0, i = 0, j = 0;

	if(medium.length > 1){
		discTitle += " (Disc " + (discNo + 1).toString() + ")";
	}

	credits = document.getElementsByTagName("artist-credit")[0].getElementsByTagName("name-credit");
	artists = "";
	for(i = 0; i < credits.length; i += 1){
		artists += credits[i].getElementsByTagName("artist")[0].getElementsByTagName("name")[0].textContent;
		if(credits[i].getAttribute("joinphrase") !== undefined){
			artists += credits[i].getAttribute("joinphrase");
		}else if(j < credits.length - 1){
			artists += ", ";
		}
	}

	tracks = medium[discNo].getElementsByTagName("track");
	for(i = 0; i < tracks.length; i += 1){
		titles.push(tracks[i].getElementsByTagName("title")[0].textContent);
	}

	for(i = 0, j = 0; i < cue.length && j < titles.length; i += 1){
		if(/^\s*FILE/i.test(cue[i])){
			cue.splice(i, 0, "PERFORMER \"" + artists.replace(/"([^"]*)"/g, "«$1»") + "\"", "TITLE \"" + discTitle.replace(/"([^"]*)"/g, "«$1»") + "\"");
			i += 2;
		}else if(/^\s*TRACK/i.test(cue[i])){
			cue.splice(i + 1, 0, "    PERFORMER \"" + artists.replace(/"([^"]*)"/g, "«$1»") + "\"", "    TITLE \"" + titles[j].replace(/"([^"]*)"/g, "«$1»") + "\"");
			j += 1;
		}
	}

	console.log(cue.join("\n"));
})();