This American Life - RSS Archive Builder

thisamericanlive-archive.js

// Usage:
//  1. Visit http://www.thisamericanlife.org/radio-archives
//  2. Paste this script into the developer console of your browser.
//  3. Wait...
//  4. Copy-paste the resulting XML into a file.
//
(function(){
  var jQuery = window.jQuery;

  var doc = document;
  Element.prototype.$ = document.$ = function (selector) {
      return [].slice.call(this.querySelectorAll(selector));
    };

  var xml = doc.implementation.createDocument(null, null);


  var appendChildren = function (elm, children) {
          for (var i=0,l=children.length; i<l; i++) {
            var child = children[i];
            if ( child instanceof Array ) {
              appendChildren(elm, child);
              break;
            }
            if ( typeof child === 'string' ) {
              child = xml.createTextNode( child );
            }
            if ( child ) {
              elm.appendChild( child );
            }
          }
        };
  var x = function (tagname) {
          var children = [].slice.call(arguments, 1);
          var attrs = {};
          if ( children && typeof children[0] !== 'string' && !(children[0] instanceof Node) ) {
            attrs = children.shift();
          }
          var elm = xml.createElement(tagname);
          for (var attrName in attrs) {
            elm.setAttribute(attrName, attrs[attrName]);
          }
          children && appendChildren(elm, children);
          return elm;
        };

  var episodes = [];

  var buildXml = function () {
          var rss = x('rss', { version:'2.0' },
                      '\n',
                      x('channel',
                        '\n',
                         x('title', 'This American Life Archive (Unofficial)'),
                        '\n',
                         x('link', 'http://www.thisamericanlife.org'),
                        '\n',
                         x('copyright', 'Copyright 1995-2015 Ira Glass'),
                        '\n',
                         x('description', 'All the episodes'),
                        '\n',
                         x('language', 'en'),
                        '\n',
                        episodes
                      ),
                      '\n'
                    );
          doc.head.parentNode.removeChild( doc.head );
          doc.body.innerHTML = '<pre/>';
          doc.body.firstChild.textContent =
              '<?xml version="1.0" encoding="UTF-8"?>\n' +
              rss.outerHTML;

          var selection = window.getSelection();
          var range = doc.createRange();
          range.selectNodeContents( doc.body );
          selection.removeAllRanges();
          selection.addRange(range);
        };

  var years = doc.$('#archive-date-nav a');
  var yearIdx = 0;
  var loadNextYear = function () {
    if ( yearIdx < years.length ) {
      var url = years[yearIdx].href;
      jQuery.get( url, function (result) {
          window.console.log('Got ', url);
          var page = doc.createElement('result');
          page.innerHTML = result.replace(/<img/gi, '<_img');

          page.$('#archive-episodes >.item-list > ul > li').forEach(function (episode) {
              var dateElm = episode.$('.date')[0];
              dateElm.parentNode.removeChild( dateElm );
              var d = dateElm.textContent.trim().split('.');
              var date = new Date( d[2], d[0] - 1, d[1] ).toString().replace(/[\+\-]\d{4} \(GMT\)/g,'').replace(/ /,', ');
              var title = episode.$('h3 > a')[0].textContent.trim();
              var number = title.split(':')[0];
              var summary = episode.$('.content')[0].textContent.trim();
              episodes[episodes.length] =
                  x('item', '\n',
                    x('title', '#'+title), '\n',
                    x('guid', { isPermaLink:false }, 'Episode '+ number +' of This American Life'), '\n',
                    x('description', summary), '\n',
                    x('pubDate', date), '\n',
                    x('enclosure', {
                      url: 'http://podcast.thisamericanlife.org/podcast/'+ number +'.mp3',
                      type: 'audio/mpeg',
                    }), '\n'
                  );
              episodes[episodes.length] = '\n';
            });
          setTimeout(loadNextYear, 500+Math.random()*1000);
        });
      yearIdx++;
    }
    else {
      buildXml();
    }
  };


  loadNextYear();

})();