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FeedMagickInfotron

Sample Declaration

<div id="bulletlist"      
      script="http://localhost/BulletList.js">
</div>
## Dependencies + none ## Input Terminals + json_rss_in: (expected message type: a feedmagik json object) ## Output Terminals + textscrap_collection_out (An array of textscraps to be emedded in another viewing infotron somwhere) ## Properties + none ## Demos that use it + 43.html + evdb.html + rss\_feeds\_timeline.html ## How does it work? If you use another infotron (HttpProxy, for instance) to get the feed off feedmagik, you'll receive a json object as described below. This blueprint will convert the feed to a generic textscrap array which is used by several other blueprints. 

/*
  FeedMagick JSON RSS format
  
  { feed_type: 'RSS',
    feed_version: '2.0',
    channel : 
    {
      title: 'Everyone\'s Photos',
      link: 'http://www.flickr.com/photos/',
      description: '',
      language:'en-US',
      category:'Events',
      generator:'RSS Generator',
      docs:'',
      ttl:60,
      opensearch:{},
      tagline:'',
      author: 'Penut768',
      modified: new Date('2006-05-12 02:46:59'),
      items: 
        [
          {
        title: 'P1010056',
        link: 'http://www.flickr.com/photos/12852817@N00/144865167/',
        content: '
Penut768 posted a photo:
  
P1010056
  ',
        author: 'Penut768',
        category: [],
        issued: new Date('2006-05-12 02:46:59'),
        modified: new Date('2006-05-12 02:46:59'),
        id: 'tag:flickr.com,2004:/photo/144865167'
      }
        ]
    }
  }

 */
BLUEPRINT(
"~01067126C6D0CF47bdBB14409B900AE9BC",
[
 ["json_rss_in", "onJsonRss", 10]
],
[
 "textscrap_collection_out"
],
function (Class) 
{

    Class.prototype.onJsonRss = function(msg)
    {
    var coll = [];  
    var n, item, result, results, issued, modified;

    try {
        results = msg.items;
        n = results.length;
    } catch (ex) {
      this.error(ex, "malformed JSON RSS output");

        return;
        /*****************************************************************/
    }
    
    
    for (i = 0; i < n; i++) {
        result = results[i];
        item = {name:result.title,
            text_content:result.content,
            uri:result.link,
            date:[]};

        issued = result.pubdate || ((result.dc) ? result.dc.date : null);

        if (issued) {
        if (typeof(issued) == "object" && 
            issued.constructor == Date) {           
        } else {
            issued = new Date(issued);
        }

        item.date.push(issued); 
        }

        coll.push(item)
    }
    
    this.postMessage("textscrap_collection_out", coll);
    };
}, "JSON RSS to Textscrap collection");
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