mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-12-28 02:21:25 +00:00
458 lines
9.8 KiB
JavaScript
458 lines
9.8 KiB
JavaScript
// AUTOGENERATED COPYRIGHT HEADER START
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// Copyright (C) 2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
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// AUTOGENERATED COPYRIGHT HEADER END
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const CHILD_PROCESS = require("node:child_process");
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const PROCESS = require("node:process");
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const PATH = require("node:path");
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const FS = require("node:fs");
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const FSPROMISES = require("node:fs/promises");
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const OS = require("os");
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const SECTION_START = "AUTOGENERATED COPYRIGHT HEADER START";
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const SECTION_END = "AUTOGENERATED COPYRIGHT HEADER END";
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const IGNORED = [
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/^\.git$/gi,
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/^cmake\/clang$/gi,
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/^cmake\/version$/gi,
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/^third-party$/gi,
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]
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let abortAllWork = false;
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class RateLimiter {
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constructor(limit = undefined) {
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const OS = require("node:os");
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this._limit = limit;
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if (!this._limit) {
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this._limit = Math.ceil(Math.max(2, OS.cpus().length / 3 * 2));
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}
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this._cur = this._limit;
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this._pend = 0;
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this._locks = [];
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}
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async run(runner) {
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// Use Promises to spin-lock this execution path until there is a free slot.
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this._pend += 1;
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while (true) {
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if (this._cur > 0) {
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this._cur -= 1;
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break;
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} else {
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await Promise.race(this._locks);
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}
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}
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this._pend -= 1;
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let data = {};
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data.pri = new Promise((resolve, reject) => {
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try {
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if (runner.constructor.name == "AsyncFunction") {
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runner().then((res) => {
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resolve(res);
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}, (err) => {
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reject(err);
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})
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} else {
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resolve(runner());
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}
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} catch (ex) {
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reject(ex);
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}
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});
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data.sec = data.pri.finally(() => {
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// Remove this promise from the locks list.
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let idx = this._locks.indexOf(data.pri);
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if (idx >= 0) {
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this._locks.splice(idx, 1);
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}
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let idx2 = this._locks.indexOf(data.sec);
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if (idx2 >= 0) {
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this._locks.splice(idx2, 1);
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}
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this._cur += 1;
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//console.log(`Avail: ${this._cur} / ${this._limit}; Pending: ${this._pend}`)
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});
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this._locks.push(data.sec);
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return await data.sec;
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}
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}
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let gitRL = new RateLimiter(1);
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let workRL = new RateLimiter();
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async function isIgnored(path) {
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let rpath = PATH.relative(process.cwd(), path).replaceAll(PATH.sep, PATH.posix.sep);
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for (let ignore of IGNORED) {
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if (ignore instanceof RegExp) {
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if (ignore.global) {
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let matches = rpath.matchAll(ignore);
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for (let match of matches) {
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return true;
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}
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} else {
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if (rpath.match(ignore) !== null) {
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return true;
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}
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}
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} else if (rpath.startsWith(ignore)) {
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return true;
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}
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}
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return await gitRL.run(async () => {
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return await new Promise((resolve, reject) => {
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try {
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let proc = CHILD_PROCESS.spawn("git", [
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"check-ignore",
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path
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], {
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"cwd": PROCESS.cwd(),
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"encoding": "utf8",
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});
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proc.stdout.on('data', (data) => {
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})
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proc.on('close', (code) => {
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resolve(code == 0);
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});
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proc.on('exit', (code) => {
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resolve(code == 0);
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});
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} catch (ex) {
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reject(ex);
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}
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});
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});
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}
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async function git_retrieveAuthors(file) {
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// git --no-pager log --date-order --reverse "--format=format:%aI|%aN <%aE>" -- file
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let lines = await gitRL.run(async () => {
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return await new Promise((resolve, reject) => {
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try {
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let chunks = [];
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let proc = CHILD_PROCESS.spawn("git", [
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"--no-pager",
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"log",
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"--date-order",
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"--reverse",
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"--format=format:%aI|%aN <%aE>",
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"--",
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file
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], {
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"cwd": PROCESS.cwd(),
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"encoding": "utf8",
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});
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proc.stdout.on('data', (chunk) => {
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chunks.push(chunk);
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});
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proc.stdout.on('close', () => {
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let chunk = proc.stdout.read();
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if (chunk) {
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chunks.push(chunk);
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}
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});
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proc.on('exit', (code) => {
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// Merge all data into one buffer.
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let length = 0;
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for (let chunk of chunks) {
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length += chunk.byteLength;
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}
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let buf = Buffer.alloc(length);
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length = 0;
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for (let chunk of chunks) {
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if (!(chunk instanceof Buffer)) {
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chunk = Buffer.from(chunk);
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}
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chunk.copy(buf, length, 0);
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length += chunk.byteLength;
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}
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if (code == 0) {
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if (buf) {
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resolve(buf.toString());
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} else {
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reject(code);
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}
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} else {
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reject(code);
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}
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});
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} catch (ex) {
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reject(ex);
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}
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});
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});
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lines = lines.split(lines.indexOf("\r\n") >= 0 ? "\r\n" : "\n");
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let authors = new Map();
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for (let line of lines) {
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let [date, name] = line.split("|");
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let author = authors.get(name);
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if (author) {
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author.to = new Date(date)
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} else {
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authors.set(name, {
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from: new Date(date),
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to: new Date(date),
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})
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}
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}
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return authors;
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}
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async function generateCopyright(file) {
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let authors = await git_retrieveAuthors(file)
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let lines = [];
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for (let entry of authors) {
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let from = entry[1].from.getUTCFullYear();
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let to = entry[1].to.getUTCFullYear();
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lines.push(`Copyright (C) ${from != to ? `${from}-${to}` : to} ${entry[0]}`);
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}
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return lines;
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}
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function makeHeader(file, copyright) {
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let file_name = PATH.basename(file).toLocaleLowerCase();
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let file_exts = file_name.substring(file_name.indexOf("."));
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let styles = {
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"#": {
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files: [
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"cmakelists.txt"
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], exts: [
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".clang-tidy",
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".clang-format",
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".cmake",
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".editorconfig",
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".gitignore",
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".gitmodules",
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".yml",
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],
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prepend: [
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`# ${SECTION_START}`,
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],
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append: [
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`# ${SECTION_END}`,
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],
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prefix: "# ",
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suffix: "",
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},
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";": {
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files: [
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""
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], exts: [
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".iss",
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".iss.in",
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],
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prepend: [
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`; ${SECTION_START}`,
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],
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append: [
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`; ${SECTION_END}`,
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],
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prefix: "; ",
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suffix: "",
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},
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"//": {
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files: [
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], exts: [
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".c",
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".c.in",
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".cpp",
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".cpp.in",
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".h",
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".h.in",
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".hpp",
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".hpp.in",
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".js",
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".rc",
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".rc.in",
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".effect"
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],
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prepend: [
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`// ${SECTION_START}`,
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],
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append: [
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`// ${SECTION_END}`,
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],
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prefix: "// ",
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suffix: "",
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},
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"<!---->": {
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files: [
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], exts: [
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".htm",
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".htm.in",
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".html",
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".html.in",
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".xml",
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".xml.in",
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".plist",
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".plist.in",
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".pkgproj",
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".pkgproj.in",
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],
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prepend: [
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`<!-- ${SECTION_START} -->`,
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],
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append: [
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`<!-- ${SECTION_END} -->`,
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],
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prefix: "<!-- ",
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suffix: " -->",
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}
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};
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for (let key in styles) {
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let style = [key, styles[key]];
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if (style[1].files.includes(file_name)
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|| style[1].files.includes(file)
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|| style[1].exts.includes(file_exts)) {
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let header = [];
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header.push(...style[1].prepend);
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for (let line of copyright) {
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header.push(`${style[1].prefix}${line}${style[1].suffix}`);
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}
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header.push(...style[1].append);
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return header;
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}
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}
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throw new Error("Unrecognized file format.")
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}
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async function updateFile(file) {
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await workRL.run(async () => {
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try {
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if (abortAllWork) {
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return;
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}
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// Copyright information.
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let copyright = await generateCopyright(file);
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let header = undefined;
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try {
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header = makeHeader(file, copyright);
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} catch (ex) {
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console.log(`Skipping file '${file}'...`);
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return;
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}
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console.log(`Updating file '${file}'...`);
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// File contents.
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let content = await FSPROMISES.readFile(file);
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let eol = (content.indexOf("\r\n") != -1 ? OS.EOL : "\n");
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let insert = Buffer.from(header.join(eol) + eol);
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// Find the starting point.
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let startHeader = content.indexOf(SECTION_START);
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startHeader = content.lastIndexOf(eol, startHeader);
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startHeader += Buffer.from(eol).byteLength;
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// Find the ending point.
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let endHeader = content.indexOf(SECTION_END);
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endHeader = content.indexOf(eol, endHeader);
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endHeader += Buffer.from(eol).byteLength;
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if (abortAllWork) {
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return;
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}
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let fd = await FSPROMISES.open(file, "w");
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let fp = [];
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if ((startHeader >= 0) && (endHeader > startHeader)) {
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let pos = 0;
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if (startHeader > 0) {
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fd.write(content, 0, startHeader, 0);
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pos += startHeader;
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}
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fd.write(insert, 0, undefined, pos);
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pos += insert.byteLength;
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fd.write(content, endHeader, undefined, pos);
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} else {
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fd.write(insert, 0, undefined, 0);
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fd.write(content, 0, undefined, insert.byteLength);
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}
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await fd.close();
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} catch (ex) {
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console.error(`Error processing '${file}'!: ${ex}`);
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abortAllWork = true;
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PROCESS.exitCode = 1;
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return;
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}
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});
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}
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async function scanPath(path) {
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// Abort here if the user aborted the process, or if the path is ignored.
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if (abortAllWork) {
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return;
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}
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let promises = [];
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await workRL.run(async () => {
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let files = await FSPROMISES.readdir(path, { "withFileTypes": true });
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for (let file of files) {
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if (abortAllWork) {
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break;
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}
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let fullname = PATH.join(path, file.name);
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if (await isIgnored(fullname)) {
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console.log(`Ignoring path '${fullname}'...`);
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continue;
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}
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if (file.isDirectory()) {
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console.log(`Scanning path '${fullname}'...`);
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promises.push(scanPath(fullname));
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} else {
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promises.push(updateFile(fullname));
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}
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}
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});
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await Promise.all(promises);
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}
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(async function () {
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PROCESS.on("SIGINT", () => {
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abortAllWork = true;
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PROCESS.exitCode = 1;
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console.log("Sanely aborting all pending work...");
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})
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let path = PATH.resolve(PROCESS.argv[2]);
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{ // Bootstrap to actually be in the directory where '.git' is.
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let is_git_directory = false;
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while (!is_git_directory) {
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if (abortAllWork) {
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return;
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}
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let entries = await FSPROMISES.readdir(PROCESS.cwd());
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if (entries.includes(".git")) {
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console.log(`Found .git at '${process.cwd()}'.`);
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is_git_directory = true;
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} else {
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PROCESS.chdir(PATH.resolve(PATH.join(PROCESS.cwd(), "..")));
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}
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}
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path = PATH.normalize(PATH.relative(process.cwd(), path));
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}
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if (!await isIgnored(path)) {
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if ((await FSPROMISES.stat(path)).isDirectory()) {
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console.log(`Scanning path '${path}'...`);
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await scanPath(path);
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} else {
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await updateFile(path);
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}
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} else {
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console.log(`Ignoring path '${path}'...`);
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}
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console.log("Done");
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})();
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