JavaScript function + regular expression to parse Spotify URIs

parseURI.js

function parseURI(uri) {
  var parse;
  if(!(parse = /^(?:https?:\/\/open.spotify.com\/|spotify:)(track|album|artist|user|playlist)(?:\/|:)([a-zA-Z0-9_]+)(?:(?:\/|:)(playlist)(?:\/|:)([a-zA-Z0-9_]+))?(.*)$/.exec(uri))) {
    return false;
  }
  var result = {
    uri: parse[0],
    raw: parse
  };

  switch(parse[1]) {
    case 'track':
    case 'album':
    case 'artist':
    case 'playlist':
    result.type = parse[1];
    result.id = parse[2];
    break;

    case 'user':
    if(parse[3] == 'playlist') {
      result.type = parse[3];
      result.id = parse[4];
      result.user = parse[2];
    } else {
      result.type = parse[1];
      result.id = parse[2];
    }
    break;
  }

  return result;
}