Vencord/src/utils/patches.ts

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/*
* Vencord, a modification for Discord's desktop app
* Copyright (c) 2022 Vendicated and contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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import { Patch, PatchReplacement, ReplaceFn } from "./types";
export function canonicalizeMatch<T extends RegExp | string>(match: T): T {
if (typeof match === "string") return match;
const canonSource = match.source
.replaceAll("\\i", "[A-Za-z_$][\\w$]*");
return new RegExp(canonSource, match.flags) as T;
}
export function canonicalizeReplace<T extends string | ReplaceFn>(replace: T, pluginName: string): T {
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const self = `Vencord.Plugins.plugins[${JSON.stringify(pluginName)}]`;
if (typeof replace !== "function")
return replace.replaceAll("$self", self) as T;
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return ((...args) => replace(...args).replaceAll("$self", self)) as T;
}
export function canonicalizeDescriptor<T>(descriptor: TypedPropertyDescriptor<T>, canonicalize: (value: T) => T) {
if (descriptor.get) {
const original = descriptor.get;
descriptor.get = function () {
return canonicalize(original.call(this));
};
} else if (descriptor.value) {
descriptor.value = canonicalize(descriptor.value);
}
return descriptor;
}
export function canonicalizeReplacement(replacement: Pick<PatchReplacement, "match" | "replace">, plugin: string) {
const descriptors = Object.getOwnPropertyDescriptors(replacement);
descriptors.match = canonicalizeDescriptor(descriptors.match, canonicalizeMatch);
descriptors.replace = canonicalizeDescriptor(
descriptors.replace,
replace => canonicalizeReplace(replace, plugin),
);
Object.defineProperties(replacement, descriptors);
}
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export function canonicalizeFind(patch: Patch) {
const descriptors = Object.getOwnPropertyDescriptors(patch);
descriptors.find = canonicalizeDescriptor(descriptors.find, canonicalizeMatch);
Object.defineProperties(patch, descriptors);
}