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March 23, 2012 02:35
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threadstatistics.user.js
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// ==UserScript== | |
// @name 4chan thread statistics | |
// @version 3.0 | |
// @namespace anon.4chan.org | |
// @description Adds thread statistics. | |
// @include http://boards.4chan.org/*/res/* | |
// @include https://boards.4chan.org/*/res/* | |
// @run-at document-start | |
// ==/UserScript== | |
(function() { | |
"use strict"; | |
function formatNumber(num) | |
{ | |
return String(num).replace(/\B(?=(?:\d{3})+(?!\d))/g, " "); | |
} | |
function formatTime(time) | |
{ | |
var days = Math.floor(time / 86400000), | |
daysS = days == 1 ? "" : "s"; | |
var hours = Math.floor((time -= days * 86400000) / 3600000), | |
hoursS = hours == 1 ? "" : "s"; | |
var minutes = Math.floor((time -= hours * 3600000) / 60000), | |
minutesS = minutes == 1 ? "" : "s"; | |
var seconds = Math.floor((time -= minutes * 60000) / 1000), | |
secondsS = seconds == 1 ? "" : "s"; | |
if (days) | |
return days + " day" + daysS + ", " + hours + " hour" + hoursS + ", " + minutes + " minute" + minutesS + " and " + seconds + " second" + secondsS; | |
else if (hours) | |
return hours + " hour" + hoursS + ", " + minutes + " minute" + minutesS + " and " + seconds + " second" + secondsS; | |
else if (minutes) | |
return minutes + " minute" + minutesS + " and " + seconds + " second" + secondsS; | |
else | |
return seconds + " second" + secondsS; | |
} | |
var posts = [], | |
postsSparse = [], | |
op, last, last10, | |
appended = false, | |
board = document.location.href.match(/^https?:\/\/boards.4chan.org(\/[^\/]+\/)/)[1]; | |
var statistics = document.createElement("div"); | |
statistics.className = "threadstatisticstext"; | |
statistics.style.textAlign = "center"; | |
statistics.style.fontSize = "xx-small"; | |
statistics.style.paddingBottom = "4px"; | |
function makeLabel(title) | |
{ | |
var b = document.createElement("b"); | |
var text = document.createTextNode(""); | |
b.appendChild(document.createTextNode(" " + title + ": ")); | |
statistics.appendChild(b); | |
statistics.appendChild(text); | |
return text; | |
} | |
var threadAge = makeLabel("Thread age"); | |
statistics.appendChild(document.createElement("br")); | |
var boardPosts = makeLabel("Posts in " + board), | |
boardPosts10 = makeLabel("last 10 mins"); | |
statistics.appendChild(document.createElement("br")); | |
var threadPosts = makeLabel("Posts in thread"), | |
threadPosts10 = makeLabel("last 10 mins"); | |
statistics.appendChild(document.createElement("br")); | |
var boardPPM = makeLabel(board + " posts per min"), | |
boardPPM10 = makeLabel("last 10 mins"); | |
statistics.appendChild(document.createElement("br")); | |
var threadPPM = makeLabel("Thread posts per min"), | |
threadPPM10 = makeLabel("last 10 mins"); | |
statistics.appendChild(document.createElement("br")); | |
var csv = document.createElement("a"), | |
csvData = "data:text/plain,ID,Date"; | |
csv.setAttribute("href", csvData); | |
csv.setAttribute("target", "_blank"); | |
csv.appendChild(document.createTextNode("csv")); | |
statistics.appendChild(csv); | |
function updatePosts(target) | |
{ | |
var newPosts = false; | |
if (!target.querySelectorAll) | |
return; | |
for (var i = 0, query = target.querySelectorAll("div.thread > div.postContainer > div.post > div.postInfo[id^=pi] > span.dateTime[data-utc]"), | |
length = query.length, elem; i < length && (elem = query[i]); i ++) | |
{ | |
var id = Number(elem.parentNode.getAttribute("id").substr(2)), | |
time = Number(elem.getAttribute("data-utc")) * 1000; | |
if (id && time && !postsSparse[id]) | |
{ | |
newPosts = true; | |
posts.push(postsSparse[id] = { | |
id: id, | |
time: time, | |
seq: posts.length, | |
}); | |
csvData += "%0d%0a" + id + "," + time; | |
} | |
} | |
if (newPosts) | |
{ | |
csv.setAttribute("href", csvData); | |
op = posts[0]; | |
last = posts[posts.length - 1]; | |
if (last == op) | |
{ | |
threadPosts.data = "1 (?%)"; | |
boardPosts.data = "?"; | |
threadPPM.data = "?"; | |
boardPPM.data = "?"; | |
} | |
else | |
{ | |
var dTime = last.time - op.time; | |
var dId = last.id - op.id; | |
threadPosts.data = formatNumber(posts.length) + " (" + (posts.length / dId * 100).toFixed(2) + "%)"; | |
boardPosts.data = formatNumber(dId); | |
boardPPM.data = (dId / (dTime / 60000)).toFixed(2); | |
} | |
updateLast10(); | |
if (!appended && document.querySelector("div#bottom")) | |
{ | |
appended = true; | |
var bottom = document.querySelector("div#bottom"); | |
bottom.parentNode.insertBefore(statistics, bottom); | |
updateThreadAge(); | |
setInterval(updateThreadAge, 1000); | |
setInterval(updateLast10, 10000); | |
} | |
} | |
} | |
function updateThreadAge() | |
{ | |
var dTime = Math.max(Date.now() - op.time, 0); | |
threadAge.data = formatTime(dTime); | |
if (last != op) | |
threadPPM.data = (posts.length / (dTime / 60000)).toFixed(2); | |
if (last10) | |
threadPPM10.data = ((posts.length - last10.seq) / Math.min(dTime / 60000, 10)).toFixed(2); | |
} | |
function updateLast10() | |
{ | |
var now = Math.max(Date.now(), last ? last.time : 0); | |
last10 = null; | |
for (var i = 0, max = posts.length; i < max; i ++) | |
if (now - posts[i].time <= 600000) | |
{ | |
last10 = posts[i]; | |
break; | |
} | |
if (!last10) | |
{ | |
threadPosts10.data = "0 (0%)"; | |
boardPosts10.data = "?"; | |
threadPPM10.data = "0"; | |
boardPPM10.data = "?"; | |
} | |
else if (last10 == last == op) | |
{ | |
threadPosts10.data = "1 (?%)"; | |
boardPosts10.data = "?"; | |
threadPPM10.data = "?"; | |
boardPPM10.data = "?"; | |
last10 = null; | |
} | |
else if (last10 == last) | |
{ | |
threadPosts10.data = "1 (?%)"; | |
boardPosts10.data = "?"; | |
threadPPM10.data = "0.10"; | |
boardPPM10.data = "?"; | |
last10 = null; | |
} | |
else | |
{ | |
var dTime = last.time - last10.time; | |
var dId = last.id - last10.id; | |
var dSeq = posts.length - last10.seq; | |
threadPosts10.data = formatNumber(dSeq) + " (" + (dSeq / dId * 100).toFixed(2) + "%)"; | |
boardPosts10.data = formatNumber(dId); | |
boardPPM10.data = (dId / (dTime / 60000)).toFixed(2); | |
} | |
} | |
document.addEventListener("DOMContentLoaded", updatePosts.bind(this, document)); | |
document.addEventListener("DOMNodeInserted", function(e) { | |
updatePosts(e.target); | |
}); | |
updatePosts(document); | |
})(); |
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