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{ AsyncTaskManager, log } from \"builder-util\"\nimport { FileCopier, Filter, MAX_FILE_REQUESTS } from \"builder-util/out/fs\"\nimport { symlink, createReadStream, createWriteStream, Stats } from \"fs\"\nimport { writeFile, readFile, mkdir } from \"fs/promises\"\nimport * as path from \"path\"\nimport { AsarOptions } from \"../options/PlatformSpecificBuildOptions\"\nimport { Packager } from \"../packager\"\nimport { PlatformPackager } from \"../platformPackager\"\nimport { getDestinationPath, ResolvedFileSet } from \"../util/appFileCopier\"\nimport { AsarFilesystem, Node } from \"./asar\"\nimport { hashFile, hashFileContents } from \"./integrity\"\nimport { detectUnpackedDirs } from \"./unpackDetector\"\n\n// eslint-disable-next-line @typescript-eslint/no-var-requires\nconst pickle = require(\"chromium-pickle-js\")\n\n/** @internal */\nexport class AsarPackager {\n  private readonly fs = new AsarFilesystem(this.src)\n  private readonly outFile: string\n  private readonly unpackedDest: string\n\n  constructor(private readonly src: string, private readonly destination: string, private readonly options: AsarOptions, private readonly unpackPattern: Filter | null) {\n    this.outFile = path.join(destination, \"app.asar\")\n    this.unpackedDest = `${this.outFile}.unpacked`\n  }\n\n  // sort files to minimize file change (i.e. asar file is not changed dramatically on small change)\n  async pack(fileSets: Array<ResolvedFileSet>, packager: PlatformPackager<any>) {\n    if (this.options.ordering != null) {\n      // ordering doesn't support transformed files, but ordering is not used functionality - wait user report to fix it\n      await order(fileSets[0].files, this.options.ordering, fileSets[0].src)\n    }\n    await mkdir(path.dirname(this.outFile), { recursive: true })\n    const unpackedFileIndexMap = new Map<ResolvedFileSet, Set<number>>()\n    for (const fileSet of fileSets) {\n      unpackedFileIndexMap.set(fileSet, await this.createPackageFromFiles(fileSet, packager.info))\n    }\n    await this.writeAsarFile(fileSets, unpackedFileIndexMap)\n  }\n\n  private async createPackageFromFiles(fileSet: ResolvedFileSet, packager: Packager) {\n    const metadata = fileSet.metadata\n    // search auto unpacked dir\n    const unpackedDirs = new Set<string>()\n    const rootForAppFilesWithoutAsar = path.join(this.destination, \"app\")\n\n    if (this.options.smartUnpack !== false) {\n      await detectUnpackedDirs(fileSet, unpackedDirs, this.unpackedDest, rootForAppFilesWithoutAsar)\n    }\n\n    const dirToCreateForUnpackedFiles = new Set<string>(unpackedDirs)\n\n    const correctDirNodeUnpackedFlag = async (filePathInArchive: string, dirNode: Node) => {\n      for (const dir of unpackedDirs) {\n        if (filePathInArchive.length > dir.length + 2 && filePathInArchive[dir.length] === path.sep && filePathInArchive.startsWith(dir)) {\n          dirNode.unpacked = true\n          unpackedDirs.add(filePathInArchive)\n          // not all dirs marked as unpacked after first iteration - because node module dir can be marked as unpacked after processing node module dir content\n          // e.g. node-notifier/example/advanced.js processed, but only on process vendor/terminal-notifier.app module will be marked as unpacked\n          await mkdir(path.join(this.unpackedDest, filePathInArchive), { recursive: true })\n          break\n        }\n      }\n    }\n\n    const transformedFiles = fileSet.transformedFiles\n    const taskManager = new AsyncTaskManager(packager.cancellationToken)\n    const fileCopier = new FileCopier()\n\n    let currentDirNode: Node | null = null\n    let currentDirPath: string | null = null\n\n    const unpackedFileIndexSet = new Set<number>()\n\n    for (let i = 0, n = fileSet.files.length; i < n; i++) {\n      const file = fileSet.files[i]\n      const stat = metadata.get(file)\n      if (stat == null) {\n        continue\n      }\n\n      const pathInArchive = path.relative(rootForAppFilesWithoutAsar, getDestinationPath(file, fileSet))\n\n      if (stat.isSymbolicLink()) {\n        const s = stat as any\n        this.fs.getOrCreateNode(pathInArchive).link = s.relativeLink\n        s.pathInArchive = pathInArchive\n        unpackedFileIndexSet.add(i)\n        continue\n      }\n\n      let fileParent = path.dirname(pathInArchive)\n      if (fileParent === \".\") {\n        fileParent = \"\"\n      }\n\n      if (currentDirPath !== fileParent) {\n        if (fileParent.startsWith(\"..\")) {\n          throw new Error(`Internal error: path must not start with \"..\": ${fileParent}`)\n        }\n\n        currentDirPath = fileParent\n        currentDirNode = this.fs.getOrCreateNode(fileParent)\n        // do not check for root\n        if (fileParent !== \"\" && !currentDirNode.unpacked) {\n          if (unpackedDirs.has(fileParent)) {\n            currentDirNode.unpacked = true\n          } else {\n            await correctDirNodeUnpackedFlag(fileParent, currentDirNode)\n          }\n        }\n      }\n\n      const dirNode = currentDirNode!\n      const newData = transformedFiles == null ? undefined : transformedFiles.get(i)\n      const isUnpacked = dirNode.unpacked || (this.unpackPattern != null && this.unpackPattern(file, stat))\n      const integrity = newData === undefined ? await hashFile(file) : hashFileContents(newData)\n      this.fs.addFileNode(file, dirNode, newData == undefined ? stat.size : Buffer.byteLength(newData), isUnpacked, stat, integrity)\n      if (isUnpacked) {\n        if (!dirNode.unpacked && !dirToCreateForUnpackedFiles.has(fileParent)) {\n          dirToCreateForUnpackedFiles.add(fileParent)\n          await mkdir(path.join(this.unpackedDest, fileParent), { recursive: true })\n        }\n\n        const unpackedFile = path.join(this.unpackedDest, pathInArchive)\n        taskManager.addTask(copyFileOrData(fileCopier, newData, file, unpackedFile, stat))\n        if (taskManager.tasks.length > MAX_FILE_REQUESTS) {\n          await taskManager.awaitTasks()\n        }\n\n        unpackedFileIndexSet.add(i)\n      }\n    }\n\n    if (taskManager.tasks.length > 0) {\n      await taskManager.awaitTasks()\n    }\n\n    return unpackedFileIndexSet\n  }\n\n  private writeAsarFile(fileSets: Array<ResolvedFileSet>, unpackedFileIndexMap: Map<ResolvedFileSet, Set<number>>): Promise<any> {\n    return new Promise((resolve, reject) => {\n      const headerPickle = pickle.createEmpty()\n      headerPickle.writeString(JSON.stringify(this.fs.header))\n      const headerBuf = headerPickle.toBuffer()\n\n      const sizePickle = pickle.createEmpty()\n      sizePickle.writeUInt32(headerBuf.length)\n\n      const sizeBuf = sizePickle.toBuffer()\n      const writeStream = createWriteStream(this.outFile)\n      writeStream.on(\"error\", reject)\n      writeStream.on(\"close\", resolve)\n      writeStream.write(sizeBuf)\n\n      let fileSetIndex = 0\n\n      let files = fileSets[0].files\n      let metadata = fileSets[0].metadata\n      let transformedFiles = fileSets[0].transformedFiles\n      let unpackedFileIndexSet = unpackedFileIndexMap.get(fileSets[0])!\n      const w = (index: number) => {\n        while (true) {\n          if (index >= files.length) {\n            if (++fileSetIndex >= fileSets.length) {\n              writeStream.end()\n              return\n            } else {\n              files = fileSets[fileSetIndex].files\n              metadata = fileSets[fileSetIndex].metadata\n              transformedFiles = fileSets[fileSetIndex].transformedFiles\n              unpackedFileIndexSet = unpackedFileIndexMap.get(fileSets[fileSetIndex])!\n              index = 0\n            }\n          }\n\n          if (!unpackedFileIndexSet.has(index)) {\n            break\n          } else {\n            const stat = metadata.get(files[index])\n            if (stat != null && stat.isSymbolicLink()) {\n              symlink((stat as any).linkRelativeToFile, path.join(this.unpackedDest, (stat as any).pathInArchive), () => w(index + 1))\n              return\n            }\n          }\n          index++\n        }\n\n        const data = transformedFiles == null ? null : transformedFiles.get(index)\n        const file = files[index]\n        if (data !== null && data !== undefined) {\n          writeStream.write(data, () => w(index + 1))\n          return\n        }\n\n        // https://github.com/yarnpkg/yarn/pull/3539\n        const stat = metadata.get(file)\n        if (stat != null && stat.size < 2 * 1024 * 1024) {\n          readFile(file)\n            .then(it => {\n              writeStream.write(it, () => w(index + 1))\n            })\n            .catch((e: any) => reject(`Cannot read file ${file}: ${e.stack || e}`))\n        } else {\n          const readStream = createReadStream(file)\n          readStream.on(\"error\", reject)\n          readStream.once(\"end\", () => w(index + 1))\n          readStream.on(\"open\", () => {\n            readStream.pipe(writeStream, {\n              end: false,\n            })\n          })\n        }\n      }\n\n      writeStream.write(headerBuf, () => w(0))\n    })\n  }\n}\n\nasync function order(filenames: Array<string>, orderingFile: string, src: string) {\n  const orderingFiles = (await readFile(orderingFile, \"utf8\")).split(\"\\n\").map(line => {\n    if (line.indexOf(\":\") !== -1) {\n      line = line.split(\":\").pop()!\n    }\n    line = line.trim()\n    if (line[0] === \"/\") {\n      line = line.slice(1)\n    }\n    return line\n  })\n\n  const ordering: Array<string> = []\n  for (const file of orderingFiles) {\n    const pathComponents = file.split(path.sep)\n    for (const pathComponent of pathComponents) {\n      ordering.push(path.join(src, pathComponent))\n    }\n  }\n\n  const sortedFiles: Array<string> = []\n  let missing = 0\n  const total = filenames.length\n  for (const file of ordering) {\n    if (!sortedFiles.includes(file) && filenames.includes(file)) {\n      sortedFiles.push(file)\n    }\n  }\n  for (const file of filenames) {\n    if (!sortedFiles.includes(file)) {\n      sortedFiles.push(file)\n      missing += 1\n    }\n  }\n  log.info({ coverage: ((total - missing) / total) * 100 }, \"ordering files in ASAR archive\")\n  return sortedFiles\n}\n\nfunction copyFileOrData(fileCopier: FileCopier, data: string | Buffer | undefined | null, source: string, destination: string, stats: Stats) {\n  if (data == null) {\n    return fileCopier.copy(source, destination, stats)\n  } else {\n    return writeFile(destination, data)\n  }\n}\n"]}