Convert Twitter JSON to RSS with Google Apps Script

C
Published in: Google Apps Script - Twitter

This Google Script converts the JSON response from the Twitter API to standard RSS feeds. The results are cached for 60 minutes and all requests to Twitter are authenticated with OAuth, an important requirement of the Twitter API v1.1.

 ```js function JSONtoRSS(json, type, key) {

oAuth();

var options = { “method”: “get”, “oAuthServiceName”:“twitter”, “oAuthUseToken”:“always” };

try {

var result = UrlFetchApp.fetch(json, options);

if (result.getResponseCode() === 200) {

  var tweets = Utilities.jsonParse(result.getContentText());

  if (tweets) {

    var len = tweets.length;

    var rss = "";

    if (len) {

      rss  = '<?xml version="1.0"?><rss version="2.0">';
      rss += ' <channel><title>Twitter ' + type + ': ' + key + '</title>';
      rss += ' <link>' + htmlentities ( json ) + '</link>';
      rss += ' <pubDate>' + new Date() + '</pubDate>';

      for (var i=0; i<len; i++) {

        var sender = tweets[i].user.screen_name;
        var tweet  = htmlentities ( tweets[i].text );

        rss += "<item><title>" + sender + ": " + tweet + "</title>";
        rss += " <author>" + tweets[i].user.name
                        + " (@" + sender + ")</author>";
        rss += " <pubDate>" + tweets[i].created_at + "</pubDate>";
        rss += " <guid isPermaLink='false'>" + tweets[i].id_str + "</guid>";
        rss += " <link>https://twitter.com/" + sender
                        + "/statuses/" + tweets[i].id_str + "</link>";
        rss += " <description>" + tweet + "</description>";
        rss += "</item>";
      }

      rss += "</channel></rss>";

      return rss;
    }
  }
}

} catch (e) { Logger.log(e.toString()); } }

function doGet(e) {

var a = e.parameter.action; var q = e.parameter.q;

var feed = ”https://api.twitter.com/1.1/”;

switch (a) { case “timeline”: feed += “statuses/user_timeline.json?screen_name=” + q; break; case “search”: feed += “search/tweets.json?q=” + encodeURIComponent(q); break; case “favorites”: feed += “favorites/list.json?screen_name=” + q; break; case “list”: var i = q.split(”/”); feed += “lists/statuses.json?slug=” + i[1] + “&owner_screen_name=” + i[0]; break; default: feed += “statuses/user_timeline.json”; break; }

var id = Utilities.base64Encode(feed);

var cache = CacheService.getPublicCache(); var rss = cache.get(id);

if ( ! rss ) { rss = JSONtoRSS ( feed, a, q ); cache.put(id, rss, 3600); }

return ContentService.createTextOutput(rss) .setMimeType(ContentService.MimeType.RSS); }



export const _frontmatter = {"title":"Convert Twitter JSON to RSS with Google Apps Script","date":"2017-03-19T18:35:22.000Z","slug":"/code/19433-twitter-json-to-rss","template":"post","category":"Code","tags":["Google Apps Script","Twitter"]}
Published in: Google Apps Script - Twitter

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Web Geek, Tech Columnist
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Amit Agarwal

Amit Agarwal is a Google Developer Expert in GSuite and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India. Read more on Lifehacker and YourStory

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