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{ Minipass } from 'minipass'\nimport { Header } from './header.js'\nimport { normalizeWindowsPath } from './normalize-windows-path.js'\nimport { Pax } from './pax.js'\nimport { EntryTypeName } from './types.js'\n\nexport class ReadEntry extends Minipass<Buffer, Buffer> {\n  extended?: Pax\n  globalExtended?: Pax\n  header: Header\n  startBlockSize: number\n  blockRemain: number\n  remain: number\n  type: EntryTypeName\n  meta: boolean = false\n  ignore: boolean = false\n  path: string\n  mode?: number\n  uid?: number\n  gid?: number\n  uname?: string\n  gname?: string\n  size: number = 0\n  mtime?: Date\n  atime?: Date\n  ctime?: Date\n  linkpath?: string\n\n  dev?: number\n  ino?: number\n  nlink?: number\n  invalid: boolean = false\n  absolute?: string\n  unsupported: boolean = false\n\n  constructor(header: Header, ex?: Pax, gex?: Pax) {\n    super({})\n    // read entries always start life paused.  this is to avoid the\n    // situation where Minipass's auto-ending empty streams results\n    // in an entry ending before we're ready for it.\n    this.pause()\n    this.extended = ex\n    this.globalExtended = gex\n    this.header = header\n    /* c8 ignore start */\n    this.remain = header.size ?? 0\n    /* c8 ignore stop */\n    this.startBlockSize = 512 * Math.ceil(this.remain / 512)\n    this.blockRemain = this.startBlockSize\n    this.type = header.type\n    switch (this.type) {\n      case 'File':\n      case 'OldFile':\n      case 'Link':\n      case 'SymbolicLink':\n      case 'CharacterDevice':\n      case 'BlockDevice':\n      case 'Directory':\n      case 'FIFO':\n      case 'ContiguousFile':\n      case 'GNUDumpDir':\n        break\n\n      case 'NextFileHasLongLinkpath':\n      case 'NextFileHasLongPath':\n      case 'OldGnuLongPath':\n      case 'GlobalExtendedHeader':\n      case 'ExtendedHeader':\n      case 'OldExtendedHeader':\n        this.meta = true\n        break\n\n      // NOTE: gnutar and bsdtar treat unrecognized types as 'File'\n      // it may be worth doing the same, but with a warning.\n      default:\n        this.ignore = true\n    }\n\n    /* c8 ignore start */\n    if (!header.path) {\n      throw new Error('no path provided for tar.ReadEntry')\n    }\n    /* c8 ignore stop */\n\n    this.path = normalizeWindowsPath(header.path) as string\n    this.mode = header.mode\n    if (this.mode) {\n      this.mode = this.mode & 0o7777\n    }\n    this.uid = header.uid\n    this.gid = header.gid\n    this.uname = header.uname\n    this.gname = header.gname\n    this.size = this.remain\n    this.mtime = header.mtime\n    this.atime = header.atime\n    this.ctime = header.ctime\n    /* c8 ignore start */\n    this.linkpath =\n      header.linkpath ?\n        normalizeWindowsPath(header.linkpath)\n      : undefined\n    /* c8 ignore stop */\n    this.uname = header.uname\n    this.gname = header.gname\n\n    if (ex) {\n      this.#slurp(ex)\n    }\n    if (gex) {\n      this.#slurp(gex, true)\n    }\n  }\n\n  write(data: Buffer) {\n    const writeLen = data.length\n    if (writeLen > this.blockRemain) {\n      throw new Error('writing more to entry than is appropriate')\n    }\n\n    const r = this.remain\n    const br = this.blockRemain\n    this.remain = Math.max(0, r - writeLen)\n    this.blockRemain = Math.max(0, br - writeLen)\n    if (this.ignore) {\n      return true\n    }\n\n    if (r >= writeLen) {\n      return super.write(data)\n    }\n\n    // r < writeLen\n    return super.write(data.subarray(0, r))\n  }\n\n  #slurp(ex: Pax, gex: boolean = false) {\n    if (ex.path) ex.path = normalizeWindowsPath(ex.path)\n    if (ex.linkpath) ex.linkpath = normalizeWindowsPath(ex.linkpath)\n    Object.assign(\n      this,\n      Object.fromEntries(\n        Object.entries(ex).filter(([k, v]) => {\n          // we slurp in everything except for the path attribute in\n          // a global extended header, because that's weird. Also, any\n          // null/undefined values are ignored.\n          return !(\n            v === null ||\n            v === undefined ||\n            (k === 'path' && gex)\n          )\n        }),\n      ),\n    )\n  }\n}\n"]}