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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"]}
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