Injeção de Fontes em Userscripts
Tento skript by nemal byť nainštalovaný priamo. Je to knižnica pre ďalšie skripty, ktorú by mali používať cez meta príkaz // @require https://update.greasyfork.org/scripts/564164/1745532/FontLoaderBypass.js
// ==UserScript==
// @name FontLoaderBypass
// @namespace http://github.com/0H4S
// @version 1.1
// @author OHAS
// @description Injeção de Fontes em Userscripts
// @license CC-BY-NC-ND-4.0
// @copyright 2026 OHAS. All Rights Reserved. (https://gist.github.com/0H4S/ae2fa82957a089576367e364cbf02438)
// ==/UserScript==
/*
Copyright Notice & Terms of Use
Copyright © 2026 OHAS. All Rights Reserved.
This software is the exclusive property of OHAS and is licensed for personal, non-commercial use only.
You may:
- Install, use, and inspect the code for learning or personal purposes.
You may NOT (without prior written permission from the author):
- Copy, redistribute, or republish this software.
- Modify, sell, or use it commercially.
- Create derivative works.
For questions, permission requests, or alternative licensing, please contact via
- GitHub: https://github.com/0H4S
- Greasy Fork: https://greasyfork.org/users/1464180
This software is provided "as is", without warranty of any kind. The author is not liable for any damages arising from its use.
*/
(function() {
'use strict';
const API = {
xhr: (typeof GM_xmlhttpRequest !== 'undefined') ? GM_xmlhttpRequest : (typeof GM !== 'undefined' ? GM.xmlHttpRequest : null),
listValues: (typeof GM_listValues !== 'undefined') ? GM_listValues : (typeof GM !== 'undefined' ? GM.listValues : null),
deleteValue: (typeof GM_deleteValue !== 'undefined') ? GM_deleteValue : null,
setValue: (typeof GM_setValue !== 'undefined') ? GM_setValue : null,
getValue: (typeof GM_getValue !== 'undefined') ? GM_getValue : null
};
const FontLoaderBypass = {
CACHE_PREFIX: 'flb_cache_',
load: function(url, name, weight, style) {
const isCss = url.includes('fonts.googleapis.com') || url.endsWith('.css');
if (isCss) {
this._processExternalCss(url);
} else {
if (!name) return;
this.loadFontBase64(url, name, weight, style);
}
},
clear: function(url) {
const isCss = url.includes('fonts.googleapis.com') || url.endsWith('.css');
if (isCss) {
this._fetch(url, 'text')
.then(cssContent => {
const fontsFound = this._parseCssContent(cssContent);
if (fontsFound.length > 0) {
fontsFound.forEach(f => this._deleteSingleKey(f.src));
}
})
.catch(() => {});
} else {
this._deleteSingleKey(url);
}
},
clearAll: async function() {
if (!API.listValues || !API.deleteValue) return;
try {
const keys = await API.listValues();
keys.forEach(key => {
if (key.startsWith(this.CACHE_PREFIX)) {
API.deleteValue(key);
}
});
} catch (e) {}
},
_processExternalCss: function(cssUrl) {
this._fetch(cssUrl, 'text')
.then(cssContent => {
const fontsFound = this._parseCssContent(cssContent);
if (fontsFound.length === 0) return;
fontsFound.forEach(f => {
this.loadFontBase64(f.src, f.family, f.weight, f.style);
});
})
.catch(() => {});
},
_parseCssContent: function(cssText) {
const results = [];
const blockRegex = /@font-face\s*{([\s\S]*?)}/g;
let match;
while ((match = blockRegex.exec(cssText)) !== null) {
const content = match[1];
const familyMatch = content.match(/font-family:\s*['"]?([^'";]+)['"]?/);
const styleMatch = content.match(/font-style:\s*([a-zA-Z]+)/);
const weightMatch = content.match(/font-weight:\s*([0-9a-zA-Z]+)/);
const srcMatch = content.match(/src:\s*url\((?:'|")?([^'")]+)(?:'|")?\)/);
if (familyMatch && srcMatch) {
results.push({
family: familyMatch[1].trim(),
style: styleMatch ? styleMatch[1].trim() : 'normal',
weight: weightMatch ? weightMatch[1].trim() : '400',
src: srcMatch[1].trim()
});
}
}
return results;
},
loadFontBase64: async function(url, fontFamilyName, fontWeight = 'normal', fontStyle = 'normal') {
const cacheKey = this.CACHE_PREFIX + url;
let blobFont = null;
if (API.getValue) {
try {
const cachedData = API.getValue(cacheKey);
if (cachedData) {
if (typeof cachedData === 'string' && cachedData.startsWith('{')) {
const parsed = JSON.parse(cachedData);
if (parsed && parsed.content) {
blobFont = this._base64ToBlob(parsed.content);
}
}
else if (typeof cachedData === 'string' && cachedData.startsWith('data:')) {
blobFont = this._base64ToBlob(cachedData);
}
}
} catch (e) {}
}
if (!blobFont) {
try {
const responseBlob = await this._fetch(url, 'blob');
blobFont = responseBlob;
const reader = new FileReader();
const base64Promise = new Promise((resolve) => {
reader.onloadend = () => resolve(reader.result);
reader.readAsDataURL(blobFont);
});
const base64Data = await base64Promise;
if (API.setValue) {
const storageObj = {
content: base64Data,
meta: {
fontName: fontFamilyName,
fontWeight: fontWeight,
fontStyle: fontStyle,
url: url
}
};
API.setValue(cacheKey, JSON.stringify(storageObj));
}
} catch (err) { return; }
}
try {
const arrayBuffer = await blobFont.arrayBuffer();
const fontFace = new FontFace(fontFamilyName, arrayBuffer, {
weight: fontWeight,
style: fontStyle,
display: 'swap'
});
await fontFace.load();
document.fonts.add(fontFace);
} catch (e) {}
},
_deleteSingleKey: function(url) {
if (API.deleteValue) {
const key = this.CACHE_PREFIX + url;
API.deleteValue(key);
}
},
_base64ToBlob: function(base64) {
const parts = base64.split(',');
const mimeType = parts[0].match(/:(.*?);/)[1];
const byteString = atob(parts[1]);
const arrayBuffer = new ArrayBuffer(byteString.length);
const int8Array = new Uint8Array(arrayBuffer);
for (let i = 0; i < byteString.length; i++) {
int8Array[i] = byteString.charCodeAt(i);
}
return new Blob([int8Array], { type: mimeType });
},
_fetch: function(url, responseType) {
return new Promise((resolve, reject) => {
if (!API.xhr) return reject();
API.xhr({
method: 'GET',
url: url,
responseType: responseType,
onload: (res) => (res.status >= 200 && res.status < 300) ? resolve(res.response) : reject(),
onerror: () => reject(),
ontimeout: () => reject()
});
});
}
};
const exportScope = (typeof unsafeWindow !== 'undefined') ? unsafeWindow : window;
exportScope.FontLoaderBypass = FontLoaderBypass;
})();