sheetjs/modules/51_xlsbmeta.js

function parse_BrtMdtinfo(data, length) {
  return {
    flags: data.read_shift(4),
    version: data.read_shift(4),
    name: parse_XLWideString(data, length - 8)
  };
}
function write_BrtMdtinfo(data) {
  var o = new_buf(12 + 2 * data.name.length);
  o.write_shift(4, data.flags);
  o.write_shift(4, data.version);
  write_XLWideString(data.name, o);
  return o.slice(0, o.l);
}
function write_BrtMdb(mdb) {
  var o = new_buf(4 + 8 * mdb.length);
  o.write_shift(4, mdb.length);
  for (var i = 0; i < mdb.length; ++i) {
    o.write_shift(4, mdb[i][0]);
    o.write_shift(4, mdb[i][1]);
  }
  return o;
}
function write_BrtBeginEsfmd(cnt, name) {
  var o = new_buf(8 + 2 * name.length);
  o.write_shift(4, cnt);
  write_XLWideString(name, o);
  return o.slice(0, o.l);
}
function write_BrtBeginEsmdb(cnt, cm) {
  var o = new_buf(8);
  o.write_shift(4, cnt);
  o.write_shift(4, cm ? 1 : 0);
  return o;
}
function parse_xlmeta_bin(data, name, _opts) {
  var out = { Types: [] };
  var opts = _opts || {};
  var state = [];
  var pass = false;
  recordhopper(data, function(val, R, RT) {
    switch (RT) {
      case 335:
        out.Types.push({ name: val.name });
        break;
      case 51:
        break;
      case 35:
        state.push(RT);
        pass = true;
        break;
      case 36:
        state.pop();
        pass = false;
        break;
      default:
        if (R.T) {
        } else if (!pass || opts.WTF && state[state.length - 1] != 35)
          throw new Error("Unexpected record 0x" + RT.toString(16));
    }
  });
  return out;
}
function write_xlmeta_bin() {
  var ba = buf_array();
  write_record(ba, 332);
  write_record(ba, 334, write_UInt32LE(1));
  write_record(ba, 335, write_BrtMdtinfo({
    name: "XLDAPR",
    version: 12e4,
    flags: 3496657072
  }));
  write_record(ba, 336);
  write_record(ba, 339, write_BrtBeginEsfmd(1, "XLDAPR"));
  write_record(ba, 52);
  write_record(ba, 35, write_UInt32LE(514));
  write_record(ba, 4096, write_UInt32LE(0));
  write_record(ba, 4097, writeuint16(1));
  write_record(ba, 36);
  write_record(ba, 53);
  write_record(ba, 340);
  write_record(ba, 337, write_BrtBeginEsmdb(1, true));
  write_record(ba, 51, write_BrtMdb([[1, 0]]));
  write_record(ba, 338);
  write_record(ba, 333);
  return ba.end();
}