Replaces chosen substrings in outgoing Bilibili live-chat messages before they are sent
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// ==UserScript==
// @name Bili Keyword Replacer
// @namespace https://github.com/TZFC/Danmaku-replace
// @version 2.1
// @description Replaces chosen substrings in outgoing Bilibili live-chat messages before they are sent
// @author TZFC
// @match https://live.bilibili.com/*
// @run-at document-start
// @grant none
// @license MIT
// ==/UserScript==
(() => {
/* ────────────────────────────── SETTINGS ────────────────────────────── */
/* Write the same number of items in both arrays, 1-to-1 correspondence. */
const to_be_replace_list = ['包子', '舔jio', '男娘','蓝凉','蓝涼','之交','抖音','y','m','p','r','e','o','x','k','i', '川普', '64','89','扣扣']; // ← originals
const target_list = ['包了', '舔.jio', '侽娘','侽娘','侽娘','Z交', '某音','у','м','р','г','е','о','х','κ','і', '川晋', 'б4','ȣ9','扣.扣']; // ← replacements
/* ────────────────────────── CHECK ────────────────────────── */
if (to_be_replace_list.length !== target_list.length) {
console.error('[Keyword Replacer] Array length mismatch!');
return;
}
const SEND_PATH = '/msg/send';
const esc = s => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
const pattern = new RegExp(
'(' + to_be_replace_list.map(esc).join('|') + ')',
'g'
);
function transformMsg(str) {
return str.replace(pattern, m => {
const idx = to_be_replace_list
.findIndex(src =>
src === m
);
return target_list[idx];
});
}
function sameEndpoint(url) {
try { return new URL(url, location.origin).pathname.endsWith(SEND_PATH); }
catch { return false; }
}
function patchedBody(body) {
if (!body) return body;
if (typeof body.has === 'function' && body.has('emoticonOptions')) {
return body;
}
const m = body.get('msg');
if (m) body.set('msg', transformMsg(m));
return body;
}
/* ─────────────────────── fetch() HOOK ─────────────────────── */
const nativeFetch = window.fetch;
window.fetch = function (input, init = {}) {
const url = typeof input === 'string' ? input
: input instanceof Request ? input.url
: '';
if (sameEndpoint(url)) {
if (init.body) {
init.body = patchedBody(init.body);
} else if (input instanceof Request) {
init = { ...input, body: patchedBody(input.body) };
input = url;
}
}
return nativeFetch.call(this, input, init);
};
/* ───────────── XMLHttpRequest HOOK (fallback path) ────────── */
const XHROpen = XMLHttpRequest.prototype.open;
const XHRSend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.open = function (method, url, ...rest) {
this.__patchMe__ = sameEndpoint(url);
return XHROpen.call(this, method, url, ...rest);
};
XMLHttpRequest.prototype.send = function (body) {
if (this.__patchMe__) body = patchedBody(body);
return XHRSend.call(this, body);
};
})();