inputPlugin for LimeChat

inputPlugin.js

// Save this file as: ~/Library/Application Support/LimeChat/inputPlugin.js
// And download this version of LimeChat that supports inputPlugin.js:
// http://cl.ly/0h3B3t3a3H3L
//
// That build of LimeChat includes this commit:
// https://github.com/zwily/limechat/commit/db1cdee2a4b90c3bc2e4956794d92f42a7264193
//
// Shortens URLs that look like graphite using goo.gl. This could
// also be more generic, and just shortens any long URL (that will
// probably end up in a line being split by limechat to get around
// IRC line length limits.)
function shortenGraphiteURLs(line) {
  var graphiteRegex = new RegExp('https?:\\/\\/([a-z0-9.]+)\\/(?:render|graphlot)\\/\\?\\S+', "g");
  var titleRegex = new RegExp('title=([^&]+)');

  if (line.indexOf("render") > 0 || line.indexOf("graphlot") > 0) {
    line = line.replace(graphiteRegex, function(url, domain) {

      var title = false;
      var match = titleRegex.exec(url);
      if (match) {
        title = decodeURIComponent(match[1]);
      }

      // Yeah, we're doing a synchronous AJAX request, cause this method is called
      // synchronously. If google starts puking out, that could cause limechat to
      // lock up while shortening a URL.
      var ajax = new XMLHttpRequest();
      ajax.open("POST", "https://www.googleapis.com/urlshortener/v1/url", false);
      ajax.setRequestHeader("Content-Type", "application/json");
      ajax.send(JSON.stringify({ "longUrl": url }));

      var json = JSON.parse(ajax.responseText);
      if (json.id) {
        var res = json.id + " \x0315[";
        if (title) {
          res = res + "\x0303" + title + " ";
        }
        res = res + "\x0314" + domain + "\x0315]\x03 ";
        return res;
      }

      return url;
    });
  }

  return line;
}

// Let's you [[blue]]colorize![[]] your IRC text.
function colorize(line) {
  var colors = {
    '00': '00', '01': '01', '02': '02', '03': '03', '04': '04',
    '05': '05', '06': '06', '07': '07', '08': '08', '09': '09',
    '10': '10', '11': '11', '12': '12', '13': '13', '14': '14',
    '15': '15', 'white': '00', 'black': '01', 'blue': '02',
    'green': '03', 'red': '04', 'brown': '05', 'purple': '06',
    'orange': '07', 'yellow': '08', 'lime': '09', 'teal': '10',
    'cyan': '11', 'aqua': '11', 'royal': '12', 'pink': '13',
    'grey': '14', 'gray': '14', 'silver': '15'
  };
  var colorRegex = new RegExp('\\[\\[(?:(\\d{2}|[a-z]{3,6})(?:,(\\d{2}|[a-z]{3,6}))?)?\\]\\]', 'g');
  return line.replace(colorRegex, function(match, fg, bg) {
    if (match == "[[]]") {
      return "\x03 ";
    }
    var fgcode = colors[fg];
    var bgcode = colors[bg];
    var res = match;
    if (fgcode) {
      res = "\x03" + fgcode;
      if (bgcode) {
        res = res + "," + bgcode;
      }
    }
    return res;
  });
}

function handleInput(line, command, channel) {
  try {
    line = shortenGraphiteURLs(line);
    line = colorize(line);
    return line;
  }
  catch (e) {
    return e.toString();
  }
}