@electron/universal/dist/file-utils.js

Utility for creating Universal macOS applications from two x64 and arm64 Electron applications

import fs from 'node:fs';
import path from 'node:path';
import { promises as stream } from 'node:stream';
import { spawn, ExitCodeError } from '@malept/cross-spawn-promise';
import { minimatch } from 'minimatch';
const MACHO_PREFIX = 'Mach-O ';
const UNPACKED_ASAR_PATH = path.join('Contents', 'Resources', 'app.asar.unpacked');
export var AppFileType;
(function (AppFileType) {
    AppFileType[AppFileType["MACHO"] = 0] = "MACHO";
    AppFileType[AppFileType["PLAIN"] = 1] = "PLAIN";
    AppFileType[AppFileType["INFO_PLIST"] = 2] = "INFO_PLIST";
    AppFileType[AppFileType["SNAPSHOT"] = 3] = "SNAPSHOT";
    AppFileType[AppFileType["APP_CODE"] = 4] = "APP_CODE";
    AppFileType[AppFileType["SINGLE_ARCH"] = 5] = "SINGLE_ARCH";
})(AppFileType || (AppFileType = {}));
const isSingleArchFile = (relativePath, opts) => {
    if (opts.singleArchFiles === undefined) {
        return false;
    }
    const unpackedPath = path.relative(UNPACKED_ASAR_PATH, relativePath);
    // Outside of app.asar.unpacked
    if (unpackedPath.startsWith('..')) {
        return false;
    }
    return minimatch(unpackedPath, opts.singleArchFiles, {
        matchBase: true,
    });
};
/**
 *
 * @param appPath Path to the application
 */
export const getAllAppFiles = async (appPath, opts) => {
    const unpackedPath = path.join('Contents', 'Resources', 'app.asar.unpacked');
    const files = [];
    const visited = new Set();
    const traverse = async (p) => {
        p = await fs.promises.realpath(p);
        if (visited.has(p))
            return;
        visited.add(p);
        const info = await fs.promises.stat(p);
        if (info.isSymbolicLink())
            return;
        if (info.isFile()) {
            const relativePath = path.relative(appPath, p);
            let fileType = AppFileType.PLAIN;
            var fileOutput = '';
            try {
                fileOutput = await spawn('file', ['--brief', '--no-pad', p]);
            }
            catch (e) {
                if (e instanceof ExitCodeError) {
                    /* silently accept error codes from "file" */
                }
                else {
                    throw e;
                }
            }
            if (p.endsWith('.asar')) {
                fileType = AppFileType.APP_CODE;
            }
            else if (isSingleArchFile(relativePath, opts)) {
                fileType = AppFileType.SINGLE_ARCH;
            }
            else if (fileOutput.startsWith(MACHO_PREFIX)) {
                fileType = AppFileType.MACHO;
            }
            else if (p.endsWith('.bin')) {
                fileType = AppFileType.SNAPSHOT;
            }
            else if (path.basename(p) === 'Info.plist') {
                fileType = AppFileType.INFO_PLIST;
            }
            files.push({
                relativePath,
                type: fileType,
            });
        }
        if (info.isDirectory()) {
            for (const child of await fs.promises.readdir(p)) {
                await traverse(path.resolve(p, child));
            }
        }
    };
    await traverse(appPath);
    return files;
};
export const readMachOHeader = async (path) => {
    const chunks = [];
    // no need to read the entire file, we only need the first 4 bytes of the file to determine the header
    await stream.pipeline(fs.createReadStream(path, { start: 0, end: 3 }), async function* (source) {
        for await (const chunk of source) {
            chunks.push(chunk);
        }
    });
    return Buffer.concat(chunks);
};
export const fsMove = async (oldPath, newPath) => {
    try {
        await fs.promises.rename(oldPath, newPath);
    }
    catch (err) {
        if (err.code === 'EXDEV') {
            // Cross-device link, fallback to copy and delete
            await fs.promises.cp(oldPath, newPath, {
                force: true,
                recursive: true,
                verbatimSymlinks: true,
            });
            await fs.promises.rm(oldPath, { force: true, recursive: true });
        }
        else {
            throw err;
        }
    }
};
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