Function createTarHeader

packages/shell/src/extras.ts:485–506

(entry: TarInputEntry)

}

function createTarHeader(entry: TarInputEntry): Uint8Array {
  const header = new Uint8Array(512);
  writeAscii(header, 0, 100, entry.path);
  writeOctal(header, 100, 8, entry.type === "directory" ? 0o755 : 0o644);
  writeOctal(header, 108, 8, 0);
  writeOctal(header, 116, 8, 0);
  writeOctal(
    header,
    124,
    12,
    entry.type === "file" ? entry.bytes.byteLength : 0
  );
  writeOctal(header, 136, 12, Math.floor(Date.now() / 1000));
  for (let i = 148; i < 156; i++) header[i] = 32;
  header[156] =
    entry.type === "directory" ? "5".charCodeAt(0) : "0".charCodeAt(0);
  writeAscii(header, 257, 6, "ustar");
  writeAscii(header, 263, 2, "00");
  const checksum = header.reduce((sum, value) => sum + value, 0);
  writeOctal(header, 148, 8, checksum);
  return header;
}

function parseTar(bytes: Uint8Array): Array<{
  path: string;