endless summer on dsbd

by taizooo 2014-09-01 [2014/09/01 20:21:47]

promotion version (Exponential Endless Summer)

@@ -93,7 +93,7 @@
   }
 
   function get_next_elements(doc) {
-    var r = doc.evaluate('id("posts")/li[starts-with(@class,"post_")]', doc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    var r = doc.evaluate('id("posts")/li[div[starts-with(@id, "post_")]]', doc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
     for (var i = 0, l = r.snapshotLength, res = new Array(l); i < l; i++) res[i] = r.snapshotItem(i);
     return res;
   }

• /*
   * @title endless summer on dsbd 
   * @description promotion version (Exponential Endless Summer)
   * @include http://www.tumblr.com/dashboard*
   * @include http://www.tumblr.com/show*
   * @include http://www.tumblr.com/blog*
   * @license reblog commons license ( cc by 3.0 )
   */ 
  
  // bookmark
  // autopager part from "twitter.AutoPager" : http://userscripts.org/scripts/review/47998
  // random choice part from ReblogMachine : http://reblog.machine.mamemomonga.com/
  //   -> ReblogMachine.endless_summer#choice : http://reblog.machine.mamemomonga.com/js/ReblogMachine.js
  // history.pushState/history.replaceState : http://d.hatena.ne.jp/javascripter/20100404/1270411268
  // show page regexp from "Tumblr Dashboard Filter by Post Type" : http://userscripts.org/scripts/review/40794
  // Exponential Endless Summer by saitamanodoruji : http://tumblr.g.hatena.ne.jp/saitamanodoruji/20120604/1338776265
  
  (function () {
    var num = 2;
    var start_url = location.href;
    var oldest_id = 264102; // http://ku.tumblr.com/post/264102
    var latest_id = get_latest_id(document);
    latest_id = (latest_id > 20000000000) ? latest_id : 20000000000;
    console.log('latest_id: ' + latest_id);
  
    var State = true;
    var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
    var BASE_REMAIN_HEIGHT = 10000;
    var loading = false;
  
    var last_element = get_next_elements(document).pop();
    if (!last_element) {
      return error();
    }
    insert_point = last_element.nextSibling;
    insert_parent = last_element.parentNode;
  
    next_page_load();
  
    window.addEventListener('scroll', function () {
      if (loading) return;
      var remain = document.documentElement.scrollHeight - window.innerHeight - window.pageYOffset;
      if (State && remain < BASE_REMAIN_HEIGHT) {
        next_page_load();
      }
    }, false);
  
    function next_page_load() {
      loading = true;
      var next = get_next(start_url);
      history.pushState("", "", next);
      console.log('next: ' + next);
      var x = new XMLHttpRequest();
      x.onload = function () {
        if (x.status <= 200 && x.status < 300) {
          load(x);
        } else {
          error();
          next_page_load();
        }
      };
      x.open('GET', next, true);
      x.send(null);
    }
  
    function load(x) {
      var html = x.responseText.replace(/<script(?:[ \t\r\n][^>]*)?>[\S\s]*?<\/script[ \t\r\n]*>|<\/?(?:i?frame|html|script|object)(?:[ \t\r\n][^<>]*)?>/gi, ' ');
      var htmlDoc;
      if (document.implementation.createHTMLDocument) {
        htmlDoc = document.implementation.createHTMLDocument('hogehoge')
      } else {
        htmlDoc = document.cloneNode(false);
        if (htmlDoc) {
          htmlDoc.appendChild(htmlDoc.importNode(document.documentElement, false));
        } else {
          htmlDoc = document.implementation.createDocument(null, 'html', null);
        }
      }
      var range = document.createRange();
      range.selectNodeContents(document.documentElement);
      htmlDoc.documentElement.appendChild(range.createContextualFragment(html));
      var docs = get_next_elements(htmlDoc);
      if (!docs.length) {
        error();
        return next_page_load();
      }
      target_rewrite(docs);
      img_cache(docs);
      docs = docs.map(function (doc) {
        return insert_parent.insertBefore(document.importNode(doc, true), insert_point);
      });
      loading = false;
    }
  
    function get_next_elements(doc) {
      var r = doc.evaluate('id("posts")/li[div[starts-with(@id, "post_")]]', doc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
      for (var i = 0, l = r.snapshotLength, res = new Array(l); i < l; i++) res[i] = r.snapshotItem(i);
      return res;
    }
  
    function target_rewrite(docs) {
      docs.forEach(function (doc) {
        var as = doc.getElementsByTagName('a');
        for (var i = 0, l = as.length; i < l; i++) {
          var a = as[i],
            _a = a.getAttribute('href');
          if (_a && !/^javascript:/.test(_a) && !/^#/.test(_a)) a.setAttribute('target', '_blank');
        }
      });
    }
  
    function img_cache(docs) {
      docs.forEach(function (doc) {
        var is = doc.getElementsByTagName('img');
        for (var i = 0, l = is.length; i < l; i++) {
          img = new Image();
          img.src = is[i].src;
        }
      });
    }
  
    function error() {
      return console.log('error');
      State = false;
    }
  
    function terminate() {
      return console.log('terminate');
      State = false;
    }
  
    function get_latest_id(doc) {
      return doc.evaluate('number(substring-after(id("posts")/li[starts-with(@id,"post_")]/@id,"post_"))', doc, null, XPathResult.NUMBER_TYPE, null).numberValue;
    }
  
    function get_next(url) {
      var ramdom_id = draw(oldest_id, latest_id);
      var x = /(?:\/dashboard|(?:\/blog\/[-\w]+)?\/show\/\w+|\/blog\/[-\w]+)/.exec(url)[0] + '/' + num + '?offset=' + ramdom_id;
      num +=1;
      return x;
    }
  
    /* Exponential Endless Summer by saitamanodoruji */
    /* http://tumblr.g.hatena.ne.jp/saitamanodoruji/20120604/1338776265 */
    /* http://saitamanodoruji.tumblr.com/exponentialEndlessSummer */
    function draw(oldestID, newestID) {
      var oldestUTime = getUnixTimeFromPostID(oldestID);
      var newestUTime = getUnixTimeFromPostID(newestID);
      var drawnUTime = oldestUTime + Math.floor((newestUTime - oldestUTime) * Math.random());
      return getPostIDFromUnixTime(drawnUTime);
    }
  
    function getPostIDFromUnixTime(utime) {
      if (utime < 1149465600000) {
        return;
      } else if (utime < 1183377600000) {
        return Math.ceil(3.12 * Math.pow(10, -244) * Math.exp(4.865 * Math.pow(10, -10) * utime));
      } else if (utime >= 1183377600000) {
        return Math.ceil(7.768 * Math.pow(10, -22) * Math.exp(5.423 * Math.pow(10, -11) * utime));
      }
    }
  
    function getUnixTimeFromPostID(postID) {
      if (postID < 1) {
        return;
      } else if (postID < 4600108) {
        return Math.floor(Math.log(postID / (3.12 * Math.pow(10, -244))) / (4.865 * Math.pow(10, -10)));
      } else if (postID >= 4600108) {
        return Math.floor(Math.log(postID / (7.768 * Math.pow(10, -22))) / (5.423 * Math.pow(10, -11)));
      }
    }
  
  })()

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