Greasemonkey-Skript für Heise-Bewertungen
Letze Aktualisierung: 25.03.2018.
Download des Greasemonkey-Plugins für Firefox.
Download des Greasemonkey-Userskripts "heise.user.js".
Mit dem Greasemonkey-Plugin für den Firefox-Webbrowser und dem Userskript "heise.user.js" können Bewertungen für Berichte auf der Nachrichten-Website heise.de abgegeben und als Balken unter den Berichten von heise.de angezeigt werden. Bei den Bewertungen geht es darum die Relevanz der Berichte zu beurteilen und nicht inhaltliche Meinungen abzugeben. Ziel ist es inhaltsarme Berichte, die eher wie Werbung aussehen, herauszufiltern und interessante Berichte hervorzuheben. Weitere Informationen befinden sich hier.
Das Userskript heise.user.js als Quellcode zum Überfliegen:
// ==UserScript==
// @name heise
// @namespace heise
// @include https://www.heise.de/*
// @include https://heise.de/*
// @version 1.3
// @author Torsten Tränkner
// @grant GM_xmlhttpRequest
// @grant GM_log
// ==/UserScript==
// last update: 2018-03-24
// global counter to know that all files were downloaded
var downloadCounter = 0;
// number of files that need to be downloaded to get all ratings
var numberOfFilesToDownload = 0;
// string with downloaded ratings
var globalRatingsString = "";
// an array with rating that shall be downloaded
var loadedRatings = {};
// map of positive and negative ratings for the news
var ratingsPerNews = {};
// ratings of 10000 news stored in one file
var CLUSTER_SIZE = 10000;
/**
* insert a new HTML element after a reference node
*/
function insertAfter(newNode, referenceNode) {
referenceNode.parentNode.insertBefore(newNode,
referenceNode.nextSibling);
}
/**
* Prepare an array with ratings that shall be downloaded.
*/
function prepareRatingsToDownload(webpage_id, object) {
// webpage ids are collected in bigger files (cluster)
// so that only a few files are loaded
webpage_filename = webpage_id - (webpage_id % CLUSTER_SIZE);
// check if already loaded
if (! (webpage_filename in loadedRatings)) {
loadedRatings[webpage_filename] = webpage_filename;
numberOfFilesToDownload++;
}
}
/**
* Scan through all news links and pass the link to an inner function.
*
* innerFunction - can be "prepareRatingsToDownload" or "addRating" to the news
*/
function scanLinks(innerFunction) {
var objects = document.evaluate(
"//a[contains(@href, '/meldung/')]", document, null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for (var i = 0; i < objects.snapshotLength; i++) {
news_link = objects.snapshotItem(i);
// the news number / webpage id has 7 digits and is written before ".html"
// e.g. -1234567.html
if (news_link.href.match(/.*\/meldung\/.*-[0-9]{7}\.html.*/)) {
// filter the news id from the URL
var regular_expression = /.*-([0-9]{7})\.html.*/g;
var match = regular_expression.exec(news_link.href);
var webpage_id = match[1];
// pass it to the inner function
innerFunction(webpage_id, news_link);
}
}
}
/**
* Adds the rating below the news block as colored HTML div bar.
*
* webpage_id - the number of the news
* news_link - the link / HTML block of the news message
*/
function addRating(webpage_id, news_link) {
like = 0;
dislike = 0;
if (webpage_id in ratingsPerNews) {
rating = ratingsPerNews[webpage_id].split(",");
like = parseInt(rating[0]);
dislike = parseInt(rating[1]);
}
var newDiv = document.createElement("div");
sum = like + dislike;
// alert("sum: " + sum + " " + like);
// display a rating bar below the news link
if (sum != 0) {
positivePercentage = (like * 100) / sum;
// display a green and a red bar for the ratings
newDiv.innerHTML =
// red bar at the right side
"<div style='clear:both; display:block; height: 5px; background: #ff0000;'>" +
// green bar at the left side
"<div style='width: " + positivePercentage +
"%; background: #00ff00;height: 5px; float:left'></div></div>" +
"<div style='clear:both; display:block;'><div style='float:left'>" +
// show the numbers of the ratings below the bar
like + "</div><div style='float:right'>" +
dislike + "</div></div><div style='clear:both'></div>";
} else {
// a yellow bar to indicate the news has not been rated
newDiv.innerHTML = "<div style='display:block; clear:both; " +
"height:5px; width:100%; background: #ffd700;'></div>";
}
newDiv.style.width = "100%";
insertAfter(newDiv, news_link);
}
/**
* Display the ratings in HTML
*/
function displayRatings() {
// alert("displayRatings:\n" + globalRatingsString);
var lines = globalRatingsString.split("\n");
for (index = 0; index < lines.length - 1; ++index) {
singleWords = lines[index].split(" ");
// add positive and negative ratings to a map
ratingsPerNews[singleWords[0]] = singleWords[1] + "," + singleWords[2];
}
// go through all links and add the rating below
scanLinks(addRating);
}
/**
* Load the files that contain the ratings.
*/
function loadRatings(webpage_filename) {
// this is the server where to download the ratings
url = "https://www.torsten-traenkner.de/bewertungen/get.php?id=" + webpage_filename;
GM_xmlhttpRequest({
method: "GET",
url: url,
timeout: 7000,
onload: function(response) {
// alert("loaded");
loaded = false
if ((response.readyState == 4) && (response.status == 200)) {
globalRatingsString = globalRatingsString + response.responseText;
}
downloadCounter++;
if (downloadCounter == numberOfFilesToDownload) {
displayRatings();
}
},
onerror: function(response) {
alert("Download of ratings failed: " + response);
downloadCounter++;
if (downloadCounter == numberOfFilesToDownload) {
displayRatings();
}
},
ontimeout: function(response) {
alert("Download of ratings timed out after 7 seconds.");
downloadCounter++;
if (downloadCounter == numberOfFilesToDownload) {
displayRatings();
}
}
});
}
// add a rating option to the article
if (window.location.href.match(/.*\/meldung\/.*-[0-9]{7}\.html.*/) ||
window.location.href.match(/.*\/artikel\/.*-[0-9]{7}\.html.*/))
{
// alert("URL matched");
var regular_expression = /.*\/meldung\/.*-([0-9]{7})\.html.*/g;
var match = regular_expression.exec(window.location.href);
var webpage_id = match[1];
// create iframe for the rating
var newIframe = document.createElement("iframe");
newIframe.setAttribute("src",
"https://www.torsten-traenkner.de/bewertungen/?webpage_id=" + webpage_id);
newIframe.setAttribute("scrolling", "yes");
newIframe.style.border = "1px solid black";
newIframe.style.width = "500px";
newIframe.style.height = "400px";
var objects = document.evaluate(
"//*[@class='beitragsfooter']", document, null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
var firstObject = objects.snapshotItem(0);
firstObject.parentNode.insertBefore(newIframe, firstObject);
}
// show the ratings
else if ( (window.location.href.match(/heise.de[/]$/)) ||
(window.location.href.match(/heise.de\/.*[/]?seite=[0-9]*$/)) ||
(window.location.href.match(/heise.de\/thema\/[^/]*$/)) ||
(window.location.href.match(/heise.de\/.*[/]$/)) )
{
// alert("heise");
// scan through all links and prepare the download of the ratings
scanLinks(prepareRatingsToDownload);
for (var key in loadedRatings) {
if (loadedRatings.hasOwnProperty(key)) {
// load ratings and display them if all ratings are downloaded
loadRatings(key);
}
}
}
Viel Spaß beim Ausprobieren des Skripts ! Falls noch etwas unklar sein sollte, dann kannst du die Kommentar-Funktion benutzen.
Patches sind willkommen.
Kommentar schreiben