builder-util
Version:
Various utilities. Used by [electron-builder](https://github.com/electron-userland/electron-builder).
1 lines • 20.8 kB
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BluebirdPromise from \"bluebird-lst\"\nimport { copyFile as _nodeCopyFile } from \"fs-extra\"\nimport { Stats } from \"fs\"\nimport { platform } from \"os\"\nimport { access, chmod, mkdir, link, lstat, readdir, readlink, stat, symlink, unlink, writeFile } from \"fs/promises\"\nimport * as path from \"path\"\nimport { Mode } from \"stat-mode\"\nimport { log } from \"./log\"\nimport { orIfFileNotExist, orNullIfFileNotExist } from \"./promise\"\nimport * as isCI from \"is-ci\"\n\nexport const MAX_FILE_REQUESTS = 8\nexport const CONCURRENCY = { concurrency: MAX_FILE_REQUESTS }\n\nexport type AfterCopyFileTransformer = (file: string) => Promise<boolean>\n\nexport class CopyFileTransformer {\n constructor(public readonly afterCopyTransformer: AfterCopyFileTransformer) {}\n}\n\nexport type FileTransformer = (file: string) => Promise<null | string | Buffer | CopyFileTransformer> | null | string | Buffer | CopyFileTransformer\nexport type Filter = (file: string, stat: Stats) => boolean\n\nexport function unlinkIfExists(file: string) {\n return unlink(file).catch(() => {\n /* ignore */\n })\n}\n\nexport async function statOrNull(file: string): Promise<Stats | null> {\n return orNullIfFileNotExist(stat(file))\n}\n\nexport async function exists(file: string): Promise<boolean> {\n try {\n await access(file)\n return true\n } catch (_e: any) {\n return false\n }\n}\n\nexport interface FileConsumer {\n consume(file: string, fileStat: Stats, parent: string, siblingNames: Array<string>): any\n\n /**\n * @default false\n */\n isIncludeDir?: boolean\n}\n\n/**\n * Returns list of file paths (system-dependent file separator)\n */\nexport async function walk(initialDirPath: string, filter?: Filter | null, consumer?: FileConsumer): Promise<Array<string>> {\n let result: Array<string> = []\n const queue: Array<string> = [initialDirPath]\n let addDirToResult = false\n const isIncludeDir = consumer == null ? false : consumer.isIncludeDir === true\n while (queue.length > 0) {\n const dirPath = queue.pop()!\n if (isIncludeDir) {\n if (addDirToResult) {\n result.push(dirPath)\n } else {\n addDirToResult = true\n }\n }\n\n const childNames = await orIfFileNotExist(readdir(dirPath), [])\n childNames.sort()\n\n let nodeModuleContent: Array<string> | null = null\n\n const dirs: Array<string> = []\n // our handler is async, but we should add sorted files, so, we add file to result not in the mapper, but after map\n const sortedFilePaths = await BluebirdPromise.map(\n childNames,\n name => {\n if (name === \".DS_Store\" || name === \".gitkeep\") {\n return null\n }\n\n const filePath = dirPath + path.sep + name\n return lstat(filePath).then(stat => {\n if (filter != null && !filter(filePath, stat)) {\n return null\n }\n\n const consumerResult = consumer == null ? null : consumer.consume(filePath, stat, dirPath, childNames)\n if (consumerResult === false) {\n return null\n } else if (consumerResult == null || !(\"then\" in consumerResult)) {\n if (stat.isDirectory()) {\n dirs.push(name)\n return null\n } else {\n return filePath\n }\n } else {\n return (consumerResult as Promise<any>).then((it): any => {\n if (it != null && Array.isArray(it)) {\n nodeModuleContent = it\n return null\n }\n\n // asarUtil can return modified stat (symlink handling)\n if ((it != null && \"isDirectory\" in it ? (it as Stats) : stat).isDirectory()) {\n dirs.push(name)\n return null\n } else {\n return filePath\n }\n })\n }\n })\n },\n CONCURRENCY\n )\n\n for (const child of sortedFilePaths) {\n if (child != null) {\n result.push(child)\n }\n }\n\n dirs.sort()\n for (const child of dirs) {\n queue.push(dirPath + path.sep + child)\n }\n\n if (nodeModuleContent != null) {\n result = result.concat(nodeModuleContent)\n }\n }\n\n return result\n}\n\nconst _isUseHardLink = process.platform !== \"win32\" && process.env.USE_HARD_LINKS !== \"false\" && (isCI || process.env.USE_HARD_LINKS === \"true\")\n\nexport function copyFile(src: string, dest: string, isEnsureDir = true) {\n return (isEnsureDir ? mkdir(path.dirname(dest), { recursive: true }) : Promise.resolve()).then(() => copyOrLinkFile(src, dest, null, false))\n}\n\n/**\n * Hard links is used if supported and allowed.\n * File permission is fixed — allow execute for all if owner can, allow read for all if owner can.\n *\n * ensureDir is not called, dest parent dir must exists\n */\nexport function copyOrLinkFile(src: string, dest: string, stats?: Stats | null, isUseHardLink?: boolean, exDevErrorHandler?: (() => boolean) | null): Promise<any> {\n if (isUseHardLink === undefined) {\n isUseHardLink = _isUseHardLink\n }\n\n if (stats != null) {\n const originalModeNumber = stats.mode\n const mode = new Mode(stats)\n if (mode.owner.execute) {\n mode.group.execute = true\n mode.others.execute = true\n }\n\n mode.group.read = true\n mode.others.read = true\n\n mode.setuid = false\n mode.setgid = false\n\n if (originalModeNumber !== stats.mode) {\n if (log.isDebugEnabled) {\n const oldMode = new Mode({ mode: originalModeNumber })\n log.debug({ file: dest, oldMode, mode }, \"permissions fixed from\")\n }\n\n // https://helgeklein.com/blog/2009/05/hard-links-and-permissions-acls/\n // Permissions on all hard links to the same data on disk are always identical. The same applies to attributes.\n // That means if you change the permissions/owner/attributes on one hard link, you will immediately see the changes on all other hard links.\n if (isUseHardLink) {\n isUseHardLink = false\n log.debug({ dest }, \"copied, but not linked, because file permissions need to be fixed\")\n }\n }\n }\n\n if (isUseHardLink) {\n return link(src, dest).catch((e: any) => {\n if (e.code === \"EXDEV\") {\n const isLog = exDevErrorHandler == null ? true : exDevErrorHandler()\n if (isLog && log.isDebugEnabled) {\n log.debug({ error: e.message }, \"cannot copy using hard link\")\n }\n return doCopyFile(src, dest, stats)\n } else {\n throw e\n }\n })\n }\n return doCopyFile(src, dest, stats)\n}\n\nfunction doCopyFile(src: string, dest: string, stats: Stats | null | undefined): Promise<any> {\n const promise = _nodeCopyFile(src, dest)\n if (stats == null) {\n return promise\n }\n\n return promise.then(() => chmod(dest, stats.mode))\n}\n\nexport class FileCopier {\n isUseHardLink: boolean\n\n constructor(\n private readonly isUseHardLinkFunction?: ((file: string) => boolean) | null,\n private readonly transformer?: FileTransformer | null\n ) {\n if (isUseHardLinkFunction === USE_HARD_LINKS) {\n this.isUseHardLink = true\n } else {\n this.isUseHardLink = _isUseHardLink && isUseHardLinkFunction !== DO_NOT_USE_HARD_LINKS\n }\n }\n\n async copy(src: string, dest: string, stat: Stats | undefined): Promise<void> {\n let afterCopyTransformer: AfterCopyFileTransformer | null = null\n if (this.transformer != null && stat != null && stat.isFile()) {\n let data = this.transformer(src)\n if (data != null) {\n if (typeof data === \"object\" && \"then\" in data) {\n data = await data\n }\n\n if (data != null) {\n if (data instanceof CopyFileTransformer) {\n afterCopyTransformer = data.afterCopyTransformer\n } else {\n await writeFile(dest, data)\n return\n }\n }\n }\n }\n\n const isUseHardLink = afterCopyTransformer == null && (!this.isUseHardLink || this.isUseHardLinkFunction == null ? this.isUseHardLink : this.isUseHardLinkFunction(dest))\n await copyOrLinkFile(\n src,\n dest,\n stat,\n isUseHardLink,\n isUseHardLink\n ? () => {\n // files are copied concurrently, so, we must not check here currentIsUseHardLink — our code can be executed after that other handler will set currentIsUseHardLink to false\n if (this.isUseHardLink) {\n this.isUseHardLink = false\n return true\n } else {\n return false\n }\n }\n : null\n )\n\n if (afterCopyTransformer != null) {\n await afterCopyTransformer(dest)\n }\n }\n}\n\nexport interface CopyDirOptions {\n filter?: Filter | null\n transformer?: FileTransformer | null\n isUseHardLink?: ((file: string) => boolean) | null\n}\n\n/**\n * Empty directories is never created.\n * Hard links is used if supported and allowed.\n */\nexport function copyDir(src: string, destination: string, options: CopyDirOptions = {}): Promise<any> {\n const fileCopier = new FileCopier(options.isUseHardLink, options.transformer)\n\n if (log.isDebugEnabled) {\n log.debug({ src, destination }, `copying${fileCopier.isUseHardLink ? \" using hard links\" : \"\"}`)\n }\n\n const createdSourceDirs = new Set<string>()\n const links: Array<Link> = []\n const symlinkType = platform() === \"win32\" ? \"junction\" : \"file\"\n return walk(src, options.filter, {\n consume: async (file, stat, parent) => {\n if (!stat.isFile() && !stat.isSymbolicLink()) {\n return\n }\n\n if (!createdSourceDirs.has(parent)) {\n await mkdir(parent.replace(src, destination), { recursive: true })\n createdSourceDirs.add(parent)\n }\n\n const destFile = file.replace(src, destination)\n if (stat.isFile()) {\n await fileCopier.copy(file, destFile, stat)\n } else {\n links.push({ file: destFile, link: await readlink(file) })\n }\n },\n }).then(() => BluebirdPromise.map(links, it => symlink(it.link, it.file, symlinkType), CONCURRENCY))\n}\n\nexport async function dirSize(dirPath: string): Promise<number> {\n const entries = await readdir(dirPath, { withFileTypes: true })\n\n const entrySizes = entries.map(async entry => {\n const entryPath = path.join(dirPath, entry.name)\n\n if (entry.isDirectory()) {\n return await dirSize(entryPath)\n }\n\n if (entry.isFile()) {\n const { size } = await stat(entryPath)\n return size\n }\n\n return 0\n })\n\n return (await Promise.all(entrySizes)).reduce((entrySize, totalSize) => entrySize + totalSize, 0)\n}\n\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\nexport const DO_NOT_USE_HARD_LINKS = (file: string) => false\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\nexport const USE_HARD_LINKS = (file: string) => true\n\nexport interface Link {\n readonly link: string\n readonly file: string\n}\n"]}