sheetjs/bits/78_wbbin.js

/* [MS-XLSB] 2.4.301 BrtBundleSh */
var parse_BrtBundleSh = function(data, length) {
	var z = {};
	z.hsState = data.read_shift(4); //ST_SheetState
	z.iTabID = data.read_shift(4);
	z.strRelID = parse_RelID(data,length-8);
	z.name = parse_XLWideString(data);
	return z;
};

/* [MS-XLSB] 2.1.7.60 Workbook */
var parse_wb_bin = function(data) {
	var wb = { AppVersion:{}, WBProps:{}, WBView:[], Sheets:[], CalcPr:{}, xmlns: "" };
	var pass = false, z;

	recordhopper(data, function(val, R) {
		switch(R.n) {
			case 'BrtBundleSh': wb.Sheets.push(val); break;

			case 'BrtBeginBook': break;
			case 'BrtFileVersion': break;
			case 'BrtWbProp': break;
			case 'BrtBeginBookViews': break;
			case 'BrtBookView': break;
			case 'BrtEndBookViews': break;
			case 'BrtBeginBundleShs': break;
			case 'BrtEndBundleShs': break;
			case 'BrtName': break;
			case 'BrtCalcProp': break;
			case 'BrtBeginPivotCacheIDs': break;
			case 'BrtBeginPivotCacheID': break;
			case 'BrtEndPivotCacheID': break;
			case 'BrtEndPivotCacheIDs': break;
			case 'BrtFileRecover': break;
			case 'BrtFRTBegin': pass = true; break;
			case 'BrtFRTEnd': pass = false; break;
			case 'BrtEndBook': break;
			case '': break;
			//default: if(!pass) throw new Error("Unexpected record " + R.n);
		}
	});

	/* defaults */
	for(z in WBPropsDef) if(typeof wb.WBProps[z] === 'undefined') wb.WBProps[z] = WBPropsDef[z];
	for(z in CalcPrDef) if(typeof wb.CalcPr[z] === 'undefined') wb.CalcPr[z] = CalcPrDef[z];

	wb.WBView.forEach(function(w){for(var z in WBViewDef) if(typeof w[z] === 'undefined') w[z]=WBViewDef[z]; });
	wb.Sheets.forEach(function(w){for(var z in SheetDef) if(typeof w[z] === 'undefined') w[z]=SheetDef[z]; });

	_ssfopts.date1904 = parsexmlbool(wb.WBProps.date1904, 'date1904');

	return wb;
};