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display-crawl-results.html
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display-crawl-results.html
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<!DOCTYPE html>
<html>
<head>
<title>Some crawl results</title>
<meta name="robots" content="noindex">
<script>
"use strict";
let jsonFilePath = "output/crawl.json";
let sites = [];
function loadCrawlData(callback) {
var xhr = new XMLHttpRequest();
xhr.overrideMimeType("application/json");
xhr.open("GET", "output/" + document.querySelector("#input-file").value, true);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4 && xhr.status == "200") {
sites = JSON.parse(xhr.responseText);
displayResults();
}
}
xhr.send(null);
}
function displayResults() {
let resultsElem = document.getElementById("results");
resultsElem.textContent = "Updating results...";
// Return to the event loop so that the above message displays before we go
// on to spend a long time building the results;
setTimeout(() => doDisplayResults(resultsElem), 0);
}
function doDisplayResults(resultsElem) {
resultsElem.textContent = "";
let p = document.createElement("p");
p.textContent = "Total sites crawled: " + sites.length + "; " +
"Total pages crawled: ";
let spanTotalPages = document.createElement("span");
p.append(spanTotalPages);
p.append(document.createTextNode("; Pages with subdocs: "));
let spanNumPagesWithSubdocs = document.createElement("span");
p.append(spanNumPagesWithSubdocs);
p.append(document.createTextNode("; Pages with subdocs matching filters: "));
let spanNumPagesWithSubdocsMatchingFilters = document.createElement("span");
p.append(spanNumPagesWithSubdocsMatchingFilters);
resultsElem.append(p);
let filters = {
bounds: {
w: parseFloat(document.querySelector("#bounds-width").value),
h: parseFloat(document.querySelector("#bounds-height").value),
},
isOnScreen: document.querySelector("#is-on-screen").checked,
notDisplayNone: document.querySelector("#not-display-none").checked,
isCrossOrigin: document.querySelector("#is-cross-origin").checked,
isTransformed: document.querySelector("#is-transformed").checked,
isFiltered: document.querySelector("#is-filtered").checked,
isMasked: document.querySelector("#is-masked").checked,
isClipped: document.querySelector("#is-clipped").checked,
};
let totalPages = 0, totalPagesWithSubdocs = 0,
totalPagesWithSubdocsMatchingFilters = 0;
for (let site of sites) {
let [pages, pagesWithSubdocs, pagesWithSubdocsMatchingFilters] =
generateAndAppendSiteToResults(site, filters, resultsElem);
totalPages += pages;
totalPagesWithSubdocs += pagesWithSubdocs;
totalPagesWithSubdocsMatchingFilters += pagesWithSubdocsMatchingFilters;
}
spanTotalPages.textContent = totalPages;
spanNumPagesWithSubdocs.textContent = totalPagesWithSubdocs;
spanNumPagesWithSubdocsMatchingFilters.textContent = totalPagesWithSubdocsMatchingFilters;
}
function generateAndAppendSiteToResults(site, filters, resultsElem) {
function subdocBoundsOK(docData, requiredBounds) {
let b = docData.bounds;
let rb = requiredBounds;
return b.w >= rb.w && b.h >= rb.h;
}
function isOnScreen(docData) {
let b = docData.bounds;
return (b.x + b.w) > 0 && (b.y + b.h) > 0;
}
function isSameOrigin(pageURL, subdocURL) {
try {
if (subdocURL == "about:blank" || subdocURL.startsWith("javascript:")) {
return true;
}
pageURL = new URL(pageURL);
subdocURL = new URL(subdocURL);
return pageURL.origin == subdocURL.origin;
} catch(e) {
// Broken URLs aren't interesting; don't add them to the cross-origin list.
return true;
}
}
function passesFilters(page, sdoc, filters) {
if (!subdocBoundsOK(sdoc, filters.bounds) ||
(filters.isOnScreen && !isOnScreen(sdoc)) ||
(filters.notDisplayNone && sdoc.isDisplayNone) ||
(filters.isCrossOrigin && isSameOrigin(page.url, sdoc.url)) ||
(filters.isTransformed && !sdoc.transform) ||
(filters.isFiltered && !sdoc.hasFilter) ||
(filters.isMasked && !sdoc.hasMask) ||
(filters.isClipped && !sdoc.hasClipPath)) {
return false;
}
return true;
}
function addSubdocToOutput(page, sdoc, listElem) {
let li = document.createElement("li");
li.textContent = sdoc.url.replace(/\?.*/, "?...").replace(/#.*/, ""); // drop query string and anchor
let details = [];
let b = sdoc.bounds;
details.push(`bounds(${Math.round(b.x)}, ${Math.round(b.y)}, ${Math.round(b.w)}, ${Math.round(b.h)})`);
if (sdoc.transform) {
details.push("transform=" + sdoc.transform);
}
if (sdoc.hasFilter) {
details.push("has filter");
}
if (sdoc.hasMask) {
details.push("has mask");
}
if (sdoc.hasClipPath) {
details.push("has clipPath");
}
li.append(document.createElement("br"));
li.append(document.createTextNode("- " + details.join("; ")));
listElem.append(li);
}
let siteStats = {
crashed: 0,
error: 0,
loadNotComplete: 0,
};
let h = document.createElement("h4");
h.textContent = site.hostname + " - " + site.pages.length + " pages crawled.";
resultsElem.append(h);
let numPagesWithSubdocs = 0, numPagesWithSubdocsMatchingFilters = 0;
let pagesWithMatchingSubdocs = [];
let pagesUL = document.createElement("ul");
for (let page of site.pages) {
if (page.crashed) {
siteStats.crashed += 1;
}
if (page.error) {
siteStats.error += 1;
}
if (page.loadNotComplete) {
siteStats.loadNotComplete += 1;
}
if (page.subdocs.length > 0) {
++numPagesWithSubdocs;
}
let subdocsOutput = document.createElement("ul");
for (let sdoc of page.subdocs) {
if (passesFilters(page, sdoc, filters)) {
addSubdocToOutput(page, sdoc, subdocsOutput);
}
}
if (subdocsOutput.children.length) {
++numPagesWithSubdocsMatchingFilters;
let url = page.url;
let pageLI = document.createElement("li");
let a = document.createElement("a");
a.href = url;
a.textContent = url.replace(/\?.*/, "?...").replace(/#.*/, "");
pageLI.append(a);
pageLI.append(subdocsOutput);
pagesUL.append(pageLI);
}
}
if (pagesUL.children.length > 0) {
resultsElem.append(pagesUL);
}
let statsMsgs = [];
if (siteStats.crashed > 0) {
statsMsgs.push(siteStats.crashed + " crashed");
}
if (siteStats.error > 0) {
statsMsgs.push(siteStats.error + " had unknown errors");
}
if (siteStats.loadNotComplete > 0) {
statsMsgs.push(siteStats.loadNotComplete + " did not finish loading");
}
if (statsMsgs.length > 0) {
h.textContent += " (" + statsMsgs.join("; ") + ")";
}
return [site.pages.length, numPagesWithSubdocs, numPagesWithSubdocsMatchingFilters];
}
addEventListener("load", _ => {
document.querySelector("#filterform").addEventListener(
"change",
displayResults
);
loadCrawlData();
});
</script>
</head>
<body>
<h1>Some crawl results</h1>
<p>For background on the crawler see the <a href="README.md">README</a>. For the raw crawl output see the <a href="output">output directory</a>.</p>
<p>Some pages below may not appear to belong to the site that they are grouped under. This happens when the original page that we loaded redirected to an external site. For example, when the youtube.com homepage redirects to accounts.google.com/signin.</p>
<p>The bounds given in the results befow are of the form "bounds(x,y,width,height)".</p>
<h4>Results file to use</h4>
<p>File: <input id="input-file" value="crawl-alexa-1st-down.json" onchange="loadCrawlData()"> (enter a file name from the <a href="output">output directory</a></p>
<h4>Subdocument filters:</h4>
<form id="filterform">
Bounds width >= <input id="bounds-width" value="6"> (as reported by getBoundingClientRect)<br>
Bounds height >= <input id="bounds-height" value="6"><br>
<input id="is-on-screen" type="checkbox" checked> Is on screen (technically, not off top or left)<br>
<input id="not-display-none" type="checkbox" checked> Is not display:none<br>
<input id="is-cross-origin" type="checkbox" checked> Is cross-origin<br>
<input id="is-transformed" type="checkbox"> Is transformed<br>
<input id="is-filtered" type="checkbox"> Has a filter on or above iframe<br>
<input id="is-masked" type="checkbox"> Has a mask on or above iframe<br>
<input id="is-clipped" type="checkbox"> Has a clipPath on or above iframe<br>
</form>
<h4>Filtered results</h4>
<section id="results">Processing crawl results...</section>
</body>
</html>