On a script info page it shows its icon from the script meta block
// ==UserScript==
// @name GreasyFork script icon
// @namespace wOxxOm.scripts
// @description On a script info page it shows its icon from the script meta block
// @icon https://icons.iconarchive.com/icons/custom-icon-design/mono-general-1/64/information-icon.png
// @version 1.1.8
// @author wOxxOm
// @match https://greasyfork.org/*scripts/*
// @include /^https://(sleazy)fork.org/.*?scripts/.*?/
// @exclude /^https://(greasy|sleazy)fork\.org/([^/]+/)?scripts/(\D|$)/
// @run-at document-start
// @connect-src *
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// ==/UserScript==
var scriptID = location.href.match(/scripts\/(\d+)/)[1];
var iconsrc = (GM_getValue(scriptID) || '').split('\n');
var iconDate = iconsrc[1];
iconsrc = iconsrc[0];
if (iconsrc.match(/^data:image|^https:/))
addIcon();
if (true) {
GM_xmlhttpRequest({
method: 'GET',
url: location.href.replace(/^(https:..)([^/]+).*?(\/scripts\/\d+).*/,'$1update.$2$3/_.user.js'),
headers: iconDate && {'If-Modified-Since': iconDate},
timeout: 10000,
onload: function (r) {
var url = (r.responseText.match(/\n\s*\/\/\s+@icon(?:url)?\s+((?:https?:\/\/|data:image\/).+)|$/i)[1] || '').trim();
var date = url && (r.responseHeaders.match(/(\n|^)Last-Modified:\s*(.+)/i) || [])[2];
if (!url || date && iconDate === date)
return;
if (!/^http:/.test(url))
return addIcon(url, date);
// download http icon and store it in script db if it's small
GM_xmlhttpRequest({
method: 'GET',
url: url,
timeout: 10000,
headers: {'Accept':'image/png,image/*;q=0.8,*/*;q=0.5'},
responseType: 'arraybuffer',
onload: function(ri) {
var /**@type ArrayBuffer*/rb = ri.response, rbl = rb.byteLength;
if (rbl > 100000) {
console.log('Script icon exceeds 100k, ignoring');
return;
}
var mime = ri.responseHeaders.match(/(^|\n\s*)Content-Type:\s*(image\/[^;,\s]+)|$/i)[2];
var rbs = [];
for (var i = 0, step = 8192; i < rbl; i += step)
rbs.push(String.fromCharCode.apply(null, new Uint8Array(rb, i, Math.min(step, rbl - i))));
addIcon('data:image/' + (mime || 'png') + ';base64,' + btoa(rbs.join('')), date);
}
});
}
});
}
function addIcon(url, date) {
if (url) {
if (url === iconsrc && date === iconDate)
return;
iconsrc = url;
iconDate = date || '';
}
GM_setValue(scriptID, iconsrc + '\n' + iconDate);
var h2 = document.querySelector('#script-info header h2');
h2 ? __add(h2) : __wait();
function __add(h2) {
if (!h2)
if (!(h2 = document.querySelector('#script-info header h2')))
return;
h2.insertAdjacentHTML('afterbegin','<div style="\
position: absolute;\
width: 80px;\
margin-left: calc(-80px - 1ex);\
display: inline-block;\
text-align: right"></div>');
var img = h2.firstChild.appendChild(document.createElement('img'));
img.style.maxWidth = img.style.maxHeight = '64px';
img.style.width = img.style.height = 'auto';
img.src = iconsrc;
}
function __wait() {
var ob = new MutationObserver(function(mutations){
for (var i=0, ml=mutations.length, m; (i<ml) && (m=mutations[i]); i++) {
if (m.target.localName == 'h2') {
__add();
ob.disconnect();
return;
}
}
});
ob.observe(document, {subtree:true, childList:true});
}
}