/* vim: set ts=2: */
/*jshint eqnull:true */
/* Spreadsheet Format -- jump to XLSX for the XLSX code */
var SSF = (function() {
	var SSF = {};
String.prototype.reverse=function(){return this.split("").reverse().join("");};
var _strrev = function(x) { return String(x).reverse(); };
function fill(c,l) { return new Array(l+1).join(c); }
function pad(v,d){var t=String(v);return t.length>=d?t:(fill(0,d-t.length)+t);}
/* Options */
var opts_fmt = {};
function fixopts(o){for(y in opts_fmt) if(o[y]===undefined) o[y]=opts_fmt[y];}
SSF.opts = opts_fmt;
opts_fmt.date1904 = 0;
opts_fmt.output = ""
opts_fmt.mode = "";
var table_fmt = {
	1:  '0',
	2:  '0.00',
	3:  '#,##0',
	4:  '#,##0.00',
	9:  '0%',
	10: '0.00%',
	11: '0.00E+00',
	12: '# ?/?',
	13: '# ??/??',
	14: 'mm/dd/yy',
	15: 'd-mmm-yy',
	16: 'd-mmm',
	17: 'mmm-yy',
	18: 'h:mm AM/PM',
	19: 'h:mm:ss AM/PM',
	20: 'h:mm',
	21: 'h:mm:ss',
	22: 'm/d/yy h:mm',
	37: '#,##0 ;(#,##0)',
	38: '#,##0 ;[Red](#,##0)',
	39: '#,##0.00;(#,##0.00)',
	40: '#,##0.00;[Red](#,##0.00)',
	45: 'mm:ss',
	46: '[h]:mm:ss',
	47: 'mmss.0',
	48: '##0.0E+0',
	49: '@'
};
var days = [
	['Sun', 'Sunday'],
	['Mon', 'Monday'],
	['Tue', 'Tuesday'],
	['Wed', 'Wednesday'],
	['Thu', 'Thursday'],
	['Fri', 'Friday'],
	['Sat', 'Saturday']
];
var months = [
	['J', 'Jan', 'January'],
	['F', 'Feb', 'February'],
	['M', 'Mar', 'March'],
	['A', 'Apr', 'April'],
	['M', 'May', 'May'],
	['J', 'Jun', 'June'],
	['J', 'Jul', 'July'],
	['A', 'Aug', 'August'],
	['S', 'Sep', 'September'],
	['O', 'Oct', 'October'],
	['N', 'Nov', 'November'],
	['D', 'Dec', 'December'],
];
var general_fmt = function(v) {
	if(typeof v === 'boolean') return v ? "TRUE" : "FALSE";
}
SSF._general = general_fmt;
var parse_date_code = function parse_date_code(v,opts) {
	var date = Math.floor(v), time = Math.round(86400 * (v - date)), dow=0;
	var dout=[], out={D:date, T:time}; fixopts(opts = (opts||{}));
	if(opts.date1904) date += 1462;
	if(date === 60) dout = [1900,2,29], dow=3;
	else {
		if(date > 60) --date;
		/* 1 = Jan 1 1900 */
		var d = new Date(1900,0,1);
		d.setDate(d.getDate() + date - 1);
		dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
		dow = d.getDay();
		if(opts.mode === 'excel' && date < 60) dow = (dow + 6) % 7;
	}
	out.y = dout[0], out.m = dout[1], out.d = dout[2];
	out.S = time % 60; time = Math.floor(time / 60);
	out.M = time % 60; time = Math.floor(time / 60);
	out.H = time;
	out.q = dow;
	return out;
};
SSF.parse_date_code = parse_date_code;
var write_date = function(type, fmt, val) {
	switch(type) {
		case 'y': switch(fmt) { /* year */
			case 'y': case 'yy': return pad(val.y % 100,2);
			default: return val.y;
		}; break;
		case 'm': switch(fmt) { /* month */
			case 'm': return val.m;
			case 'mm': return pad(val.m,2);
			case 'mmm': return months[val.m-1][1];
			case 'mmmm': return months[val.m-1][2];
			case 'mmmmm': return months[val.m-1][0];
			default: throw 'bad month format: ' + fmt;
		}; break;
		case 'd': switch(fmt) { /* day */
			case 'd': return val.d;
			case 'dd': return pad(val.d,2);
			case 'ddd': return days[val.q][0];
			case 'dddd': return days[val.q][1];
			default: throw 'bad day format: ' + fmt;
		}; break;
		case 'h': switch(fmt) { /* 12-hour */
			case 'h': return 1+(val.H+11)%12;
			case 'hh': return pad(1+(val.H+11)%12, 2);
			default: throw 'bad hour format: ' + fmt;
		}; break;
		case 'H': switch(fmt) { /* 24-hour */
			case 'h': return val.H;
			case 'hh': return pad(val.H, 2);
			default: throw 'bad hour format: ' + fmt;
		}; break;
		case 'M': switch(fmt) { /* minutes */
			case 'm': return val.M;
			case 'mm': return pad(val.M, 2);
			default: throw 'bad minute format: ' + fmt;
		}; break;
		case 's': switch(fmt) { /* seconds */
			case 's': return val.S;
			case 'ss': return pad(val.S, 2);
			default: throw 'bad second format: ' + fmt;
		}; break;
		case 'A': return (val.h>=12 ? 'P' : 'A') + fmt.substr(1);
		default: throw 'bad format type ' + type + ' in ' + fmt;
	}
};
function split_fmt(fmt) {
	return fmt.reverse().split(/;(?!\\)/).reverse().map(_strrev);
}
SSF._split = split_fmt;
function eval_fmt(fmt, v, opts) {
	var out = [], o = "", i = 0, c = "", lst='t', q = {}, dt;
	fixopts(opts = (opts || {}));
	var hr='H'
	/* Tokenize */
	while(i < fmt.length) {
		switch(c = fmt[i]) {
			case '"': /* Literal text */
				for(o="";fmt[++i] !== '"';) o += fmt[(fmt[i] === '\\' ? ++i : i)];
				out.push({t:'t', v:o}); break;
			case '\\': out.push({t:'t', v:fmt[++i]}); ++i; break;
			case '@': /* Text Placeholder */
				out.push({t:'T', v:v}); ++i; break;
			/* Dates */
			case 'm': case 'd': case 'y': case 'h': case 's':
				if(!dt) dt = parse_date_code(v, opts);
				o = fmt[i]; while(fmt[++i] === c) o+=c;
				if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
				if(c === 'h') c = hr;
				q={t:c, v:o}; out.push(q); lst = c; break;
			case 'A':
				q={t:c,v:"A"};
				if(fmt.substr(i, 3) === "A/P") hr = 'h',i+=3;
				else if(fmt.substr(i,5) === "AM/PM") { q.v = "AM"; i+=5; hr = 'h' }
				else q.t = "t";
				out.push(q); lst = c; break;
			case '[': /* ignore all conditionals and formatting */
				while(fmt[i++] !== ']'); break;
			default:
				if("$-+/():!^&'~{}<>= ".indexOf(c) === -1)
					throw 'unrecognized character ' + fmt[i] + ' in ' + fmt;
				out.push({t:'t', v:c}); ++i; break;
		}
	}
	/* walk backwards */
	for(i=out.length-1, lst='t'; i >= 0; --i) {
		switch(out[i].t) {
			case 'h': case 'H': out[i].t = hr; lst='h'; break;
			case 'd': case 'y': case 's': case 'M': lst=out[i].t; break;
			case 'm': if(lst === 's') out[i].t = 'M'; break;

		}
	}

	/* replace fields */
	for(i=0; i < out.length; ++i) {
		switch(out[i].t) {
			case 't': case 'T': break;
			case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'A':
				out[i].v = write_date(out[i].t, out[i].v, dt);
				out[i].t = 't'; break;
			default: throw "unrecognized type " + out[i].t;
		}
	}

	return out.map(function(x){return x.v}).join("");
}
SSF._eval = eval_fmt;
function choose_fmt(fmt, v) {
	if(typeof fmt === "string") fmt = split_fmt(fmt);
	if(!(typeof v === "number")) return fmt[3];
	return v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
}

var format = function format(fmt,v,o) {
	fixopts(o = (o||{}));
	if(fmt === 0) return general_fmt(v, o);
	if(typeof fmt === 'number') fmt = table_fmt[fmt];
	var f = choose_fmt(fmt, v, o);
	return eval_fmt(f, v, o);
}

SSF._choose = choose_fmt;
SSF._table = table_fmt;
SSF.load = function(fmt, idx) { table_fmt[idx] = fmt; };
SSF.format = format;

	return SSF;
})();

var XLSX = (function(){
var ct2type = {
	"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml": "workbooks",
	"application/vnd.openxmlformats-package.core-properties+xml": "coreprops",
	"application/vnd.openxmlformats-officedocument.extended-properties+xml": "extprops",
	"application/vnd.openxmlformats-officedocument.spreadsheetml.calcChain+xml": "calcchains",
	"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml":"sheets",
	"application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml": "strs",
	"application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml":"styles",
	"application/vnd.openxmlformats-officedocument.theme+xml":"themes",
	"foo": "bar"
};

/* 18.2.28 (CT_WorkbookProtection) Defaults */
var WBPropsDef = {
	allowRefreshQuery: '0',
	autoCompressPictures: '1',
	backupFile: '0',
	checkCompatibility: '0',
	codeName: '',
	date1904: '0',
	dateCompatibility: '1',
	//defaultThemeVersion: '0',
	filterPrivacy: '0',
	hidePivotFieldList: '0',
	promptedSolutions: '0',
	publishItems: '0',
	refreshAllConnections: false,
	saveExternalLinkValues: '1',
	showBorderUnselectedTables: '1',
	showInkAnnotation: '1',
	showObjects: 'all',
	showPivotChartFilter: '0'
	//updateLinks: 'userSet'
};

/* 18.2.30 (CT_BookView) Defaults */
var WBViewDef = {
	activeTab: '0',
	autoFilterDateGrouping: '1',
	firstSheet: '0',
	minimized: '0',
	showHorizontalScroll: '1',
	showSheetTabs: '1',
	showVerticalScroll: '1',
	tabRatio: '600',
	visibility: 'visible'
	//window{Height,Width}, {x,y}Window
};

/* 18.2.19 (CT_Sheet) Defaults */
var SheetDef = {
	state: 'visible'
};

/* 18.2.2  (CT_CalcPr) Defaults */
var CalcPrDef = {
	calcCompleted: 'true',
	calcMode: 'auto',
	calcOnSave: 'true',
	concurrentCalc: 'true',
	fullCalcOnLoad: 'false',
	fullPrecision: 'true',
	iterate: 'false',
	iterateCount: '100',
	iterateDelta: '0.001',
	refMode: 'A1'
};

/* 18.2.3 (CT_CustomWorkbookView) Defaults */
var CustomWBViewDef = {
	autoUpdate: 'false',
	changesSavedWin: 'false',
	includeHiddenRowCol: 'true',
	includePrintSettings: 'true',
	maximized: 'false',
	minimized: 'false',
	onlySync: 'false',
	personalView: 'false',
	showComments: 'commIndicator',
	showFormulaBar: 'true',
	showHorizontalScroll: 'true',
	showObjects: 'all',
	showSheetTabs: 'true',
	showStatusbar: 'true',
	showVerticalScroll: 'true',
	tabRatio: '600',
	xWindow: '0',
	yWindow: '0'
};

var XMLNS_CT = 'http://schemas.openxmlformats.org/package/2006/content-types';
var XMLNS_WB = 'http://schemas.openxmlformats.org/spreadsheetml/2006/main';

var encodings = {
	'&quot;': '"',
	'&apos;': "'",
	'&gt;': '>',
	'&lt;': '<',
	'&amp;': '&'
};

// TODO: CP remap (need to read file version to determine OS)
function unescapexml(text){
	var s = text + '';
	for(var y in encodings) s = s.replace(new RegExp(y,'g'), encodings[y]);
	return s.replace(/_x([0-9a-fA-F]*)_/g,function(m,c) {return _chr(parseInt(c,16));});
}

function parsexmltag(tag) {
	var words = tag.split(/\s+/);
	var z = {'0': words[0]};
	if(words.length === 1) return z;
	tag.match(/(\w+)="([^"]*)"/g).map(
		function(x){var y=x.match(/(\w+)="([^"]*)"/); z[y[1]] = y[2]; });
	return z;
}


var strs = {}; // shared strings
var styles = {}; // shared styles


/* 18.3 Worksheets */
function parseSheet(data) {
	/* 18.3.1.99 worksheet CT_Worksheet */
	var s = {};

	/* 18.3.1.35 dimension CT_SheetDimension ? */
	var ref = data.match(/<dimension ref="([^"]*)"\s*\/>/);
	if(ref && ref.indexOf(":") !== -1) s["!ref"] = ref[1];

	var refguess = {s: {r:1000000, c:1000000}, e: {r:0, c:0} };
	var q = ["v","f"];

	/* 18.3.1.80 sheetData CT_SheetData ? */
	if(!data.match(/<sheetData *\/>/))
	data.match(/<sheetData>([^]*)<\/sheetData>/m)[1].split("</row>").forEach(function(x) {
		if(x === "" || x.trim() === "") return;

		/* 18.3.1.73 row CT_Row */
		var row = parsexmltag(x.match(/<row[^>]*>/)[0]);
		if(refguess.s.r > row.r - 1) refguess.s.r = row.r - 1;
		if(refguess.e.r < row.r - 1) refguess.e.r = row.r - 1;

		/* 18.3.1.4 c CT_Cell */
		var cells = x.substr(x.indexOf('>')+1).split(/<c/);
		cells.forEach(function(c, idx) { if(c === "" || c.trim() === "") return;
			c = "<c" + c;
			if(refguess.s.c > idx - 1) refguess.s.c = idx - 1;
			if(refguess.e.c < idx - 1) refguess.e.c = idx - 1;
			var cell = parsexmltag((c.match(/<c[^>]*>/)||[c])[0]); delete cell[0];
			var d = c.substr(c.indexOf('>')+1);
			var p = {};
			q.forEach(function(f){var x=d.match(matchtag(f));if(x)p[f]=unescapexml(x[1]);});

			/* SCHEMA IS ACTUALLY INCORRECT HERE.  IF A CELL HAS NO T, EMIT "" */
			if(cell.t === undefined && p.v === undefined) { p.t = "str"; p.v = undefined; }
			else p.t = (cell.t ? cell.t : "n"); // default is "n" in schema
			switch(p.t) {
				case 'n': p.v = parseFloat(p.v); break;
				case 's': p.v = strs[parseInt(p.v, 10)].t; break;
				case 'str': if(p.v) p.v = utf8read(p.v); break; // normal string
				case 'inlineStr':
					p.t = 'str'; p.v = unescapexml(d.match(matchtag('t'))[1]);
					break; // inline string
				case 'b':
					switch(p.v) {
						case '0': case 'FALSE': case "false": case false: p.v=false; break;
						case '1': case 'TRUE':  case "true":  case true:  p.v=true;  break;
						default: throw "Unrecognized boolean: " + p.v;
					} break;
				/* in case of error, stick value in .raw */
				case 'e': p.raw = p.v; p.v = undefined; break;
				default: throw "Unrecognized cell type: " + p.t;
			}

			/* formatting */
			if(cell.s) {
				var cf = styles.CellXf[cell.s];
				if(cf && cf.numFmtId && cf.numFmtId != 0) {
					p.raw = p.v;
					p.rawt = p.t;
					try {
						p.v = SSF.format(cf.numFmtId,p.v);
						p.t = 'str';
					} catch(e) { p.v = p.raw; }
				}
			}

			s[cell.r] = p;
		});
	});
	if(!s["!ref"]) s["!ref"] = encode_range(refguess);
	return s;
}

// matches <foo>...</foo> extracts content
function matchtag(f,g) {return new RegExp('<'+f+'(?: xml:space="preserve")?>([^]*)</'+f+'>',(g||"")+"m");}

function parseVector(data) {
	var h = parsexmltag(data);

	var matches = data.match(new RegExp("<vt:" + h.baseType + ">(.*?)</vt:" + h.baseType + ">", 'g'));
	if(matches.length != h.size) throw "unexpected vector length " + matches.length + " != " + h.size;
	var res = [];
	matches.forEach(function(x) {
		var v = x.replace(/<[/]?vt:variant>/g,"").match(/<vt:([^>]*)>(.*)</);
		res.push({v:v[2], t:v[1]});
	});
	return res;
}


var utf8read = function(orig) {
	var out = "", i = 0, c = 0, c1 = 0, c2 = 0, c3 = 0;
	while (i < orig.length) {
		c = orig.charCodeAt(i++);
		if (c < 128) out += _chr(c);
		else {
			c2 = orig.charCodeAt(i++);
			if (c>191 && c<224) out += _chr((c & 31) << 6 | c2 & 63);
			else {
				c3 = orig.charCodeAt(i++);
				out += _chr((c & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
			}
		}
	}
	return out;
};

/* 18.4 Shared String Table */
function parseStrs(data) {
	var s = [];
	var sst = data.match(new RegExp("<sst ([^>]*)>([\\s\\S]*)<\/sst>","m"));
	if(sst) {
		s = sst[2].replace(/<si>/g,"").split(/<\/si>/).map(function(x) { var z = {};
			var y=x.match(/<(.*)>([\s\S]*)<\/.*/); if(y) z[y[1].split(" ")[0]]=utf8read(unescapexml(y[2])); return z;});

		sst = parsexmltag(sst[1]); s.count = sst.count; s.uniqueCount = sst.uniqueCount;
	}
	return s;
}

function parseProps(data) {
	var p = { Company:'' }, q = {};
	var strings = ["Application", "DocSecurity", "Company", "AppVersion"];
	var bools = ["HyperlinksChanged","SharedDoc","LinksUpToDate","ScaleCrop"];
	var xtra = ["HeadingPairs", "TitlesOfParts"];
	var xtracp = ["category", "contentStatus", "lastModifiedBy", "lastPrinted", "revision", "version"];
	var xtradc = ["creator", "description", "identifier", "language", "subject", "title"];
	var xtradcterms = ["created", "modified"];
	xtra = xtra.concat(xtracp.map(function(x) { return "cp:" + x; }));
	xtra = xtra.concat(xtradc.map(function(x) { return "dc:" + x; }));
	xtra = xtra.concat(xtradcterms.map(function(x) { return "dcterms:" + x; }));


	strings.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1];});
	bools.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1] == "true";});
	xtra.forEach(function(f) {
		var cur = data.match(new RegExp("<" + f + "[^>]*>(.*)<\/" + f + ">"));
		if(cur && cur.length > 0) q[f] = cur[1];
	});

	if(q["HeadingPairs"] && q["TitlesOfParts"]) {
		var v = parseVector(q["HeadingPairs"]);
		var j = 0, widx = 0;
		for(var i = 0; i !== v.length; ++i) {
			switch(v[i].v) {
				case "Worksheets": widx = j; p["Worksheets"] = +v[++i]; break;
				case "Named Ranges": ++i; break; // TODO: Handle Named Ranges
				default: console.error("Unrecognized key in Heading Pairs: " + v[i++].v);
			}
		}
		var parts = parseVector(q["TitlesOfParts"]).map(utf8read);
		p["SheetNames"] = parts.slice(widx, widx + p["Worksheets"]);
	}
	p["Creator"] = q["dc:creator"];
	p["LastModifiedBy"] = q["cp:lastModifiedBy"];
	p["CreatedDate"] = new Date(q["dcterms:created"]);
	p["ModifiedDate"] = new Date(q["dcterms:modified"]);
	return p;
}

/* 18.6 Calculation Chain */
function parseDeps(data) {
	var d = [];
	var l = 0, i = 1;
	data.match(/<[^>]*>/g).forEach(function(x) {
		var y = parsexmltag(x);
		switch(y[0]) {
			case '<?xml': break;
			/* 18.6.2  calcChain CT_CalcChain 1 */
			case '<calcChain': case '<calcChain>': case '</calcChain>': break;
			/* 18.6.1  c CT_CalcCell 1 */
			case '<c': delete y[0]; if(y.i) i = y.i; else y.i = i; d.push(y); break;
		}
	});
	return d;
}

var ctext = {};

function parseCT(data) {
	var ct = { workbooks: [], sheets: [], calcchains: [], themes: [], styles: [],
		coreprops: [], extprops: [], strs:[], xmlns: "" };
	if(data == null) return data;
	data.match(/<[^>]*>/g).forEach(function(x) {
		var y = parsexmltag(x);
		switch(y[0]) {
			case '<?xml': break;
			case '<Types': ct.xmlns = y.xmlns; break;
			case '<Default': ctext[y.Extension] = y.ContentType; break;
			case '<Override':
				if(y.ContentType in ct2type)ct[ct2type[y.ContentType]].push(y.PartName);
				break;
		}
	});
	if(ct.xmlns !== XMLNS_CT) throw "Unknown Namespace: " + ct.xmlns;
	ct.calcchain = ct.calcchains.length > 0 ? ct.calcchains[0] : "";
	ct.sst = ct.strs.length > 0 ? ct.strs[0] : "";
	ct.style = ct.styles.length > 0 ? ct.styles[0] : "";
	delete ct.calcchains;
	return ct;
}


/* 18.2 Workbook */
function parseWB(data) {
	var wb = { AppVersion:{}, WBProps:{}, WBView:[], Sheets:[], CalcPr:{}, xmlns: "" };
	var pass = false;
	data.match(/<[^>]*>/g).forEach(function(x) {
		var y = parsexmltag(x);
		switch(y[0]) {
			case '<?xml': break;

			/* 18.2.27 workbook CT_Workbook 1 */
			case '<workbook': wb.xmlns = y.xmlns; break;
			case '</workbook>': break;

			/* 18.2.13 fileVersion CT_FileVersion ? */
			case '<fileVersion': delete y[0]; wb.AppVersion = y; break;
			case '<fileVersion/>': break;

			/* 18.2.12 fileSharing CT_FileSharing ? */
			case '<fileSharing': case '<fileSharing/>': break;

			/* 18.2.28 workbookPr CT_WorkbookPr ? */
			case '<workbookPr': delete y[0]; wb.WBProps = y; break;
			case '<workbookPr/>': delete y[0]; wb.WBProps = y; break;

			/* 18.2.29 workbookProtection CT_WorkbookProtection ? */
			case '<workbookProtection/>': break;

			/* 18.2.1  bookViews CT_BookViews ? */
			case '<bookViews>': case '</bookViews>': break;
			/* 18.2.30   workbookView CT_BookView + */
			case '<workbookView': delete y[0]; wb.WBView.push(y); break;

			/* 18.2.20 sheets CT_Sheets 1 */
			case '<sheets>': case '</sheets>': break; // aggregate sheet
			/* 18.2.19   sheet CT_Sheet + */
			case '<sheet': delete y[0]; y.name = utf8read(y.name); wb.Sheets.push(y); break;

			/* 18.2.15 functionGroups CT_FunctionGroups ? */
			case '<functionGroups': case '<functionGroups/>': break;
			/* 18.2.14   functionGroup CT_FunctionGroup + */
			case '<functionGroup': break;

			/* 18.2.9  externalReferences CT_ExternalReferences ? */
			case '<externalReferences': case '</externalReferences>': break;
			/* 18.2.8    externalReference CT_ExternalReference + */
			case '<externalReference': break;

			/* 18.2.6  definedNames CT_DefinedNames ? */
			case '<definedNames/>': break;
			case '<definedNames>': pass=true; break;
			case '</definedNames>': pass=false; break;
			/* 18.2.5    definedName CT_DefinedName + */
			case '<definedName': case '<definedName/>': case '</definedName>': break;

			/* 18.2.2  calcPr CT_CalcPr ? */
			case '<calcPr': delete y[0]; wb.CalcPr = y; break;
			case '<calcPr/>': delete y[0]; wb.CalcPr = y; break;

			/* 18.2.16 oleSize CT_OleSize ? (ref required) */
			case '<oleSize': break;

			/* 18.2.4  customWorkbookViews CT_CustomWorkbookViews ? */
			case '<customWorkbookViews>': case '</customWorkbookViews>': case '<customWorkbookViews': break;
			/* 18.2.3    customWorkbookView CT_CustomWorkbookView + */
			case '<customWorkbookView': case '</customWorkbookView>': break;

			/* 18.2.18 pivotCaches CT_PivotCaches ? */
			case '<pivotCaches>': case '</pivotCaches>': case '<pivotCaches': break;
			/* 18.2.17 pivotCache CT_PivotCache ? */
			case '<pivotCache': break;

			/* 18.2.21 smartTagPr CT_SmartTagPr ? */
			case '<smartTagPr': case '<smartTagPr/>': break;

			/* 18.2.23 smartTagTypes CT_SmartTagTypes ? */
			case '<smartTagTypes': case '<smartTagTypes>': case '</smartTagTypes>': break;
			/* 18.2.22   smartTagType CT_SmartTagType ? */
			case '<smartTagType': break;

			/* 18.2.24 webPublishing CT_WebPublishing ? */
			case '<webPublishing': case '<webPublishing/>': break;

			/* 18.2.11 fileRecoveryPr CT_FileRecoveryPr ? */
			case '<fileRecoveryPr': case '<fileRecoveryPr/>': break;

			/* 18.2.26 webPublishObjects CT_WebPublishObjects ? */
			case '<webPublishObjects>': case '<webPublishObjects': case '</webPublishObjects>': break;
			/* 18.2.25 webPublishObject CT_WebPublishObject ? */
			case '<webPublishObject': break;

			/* 18.2.10 extLst CT_ExtensionList ? */
			case '<extLst>': case '</extLst>': case '<extLst/>': break;
			/* 18.2.7    ext CT_Extension + */
			case '<ext': pass=true; break; //TODO: check with versions of excel
			case '</ext>': pass=false; break;

			/* Others */
			case '<mx:ArchID': break;
			case '<mc:AlternateContent': pass=true; break;
			case '</mc:AlternateContent>': pass=false; break;

			default: if(!pass) console.error("WB Tag",x,y);
		}
	});
	if(wb.xmlns !== XMLNS_WB) throw "Unknown Namespace: " + wb.xmlns;

	var z;
	/* defaults */
	for(z in WBPropsDef) if(null == wb.WBProps[z]) wb.WBProps[z] = WBPropsDef[z];
	for(z in CalcPrDef) if(null == wb.CalcPr[z]) wb.CalcPr[z] = CalcPrDef[z];

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

	return wb;
}

/* 18.8.31 numFmts CT_NumFmts */
function parseNumFmts(t) {
	styles.NumberFmt = [];
	for(y in SSF._table) styles.NumberFmt[y] = SSF._table[y];
	t[0].match(/<[^>]*>/g).forEach(function(x) {
		var y = parsexmltag(x);
		switch(y[0]) {
			case '<numFmts': case '</numFmts>': case '<numFmts/>': break;
			case '<numFmt': {
				var f=unescapexml(y.formatCode), i=parseInt(y.numFmtId,10);
				styles.NumberFmt[i] = f; SSF.load(f,i);
			} break;
			default: throw 'unrecognized ' + y[0] + ' in numFmts';
		}
	});
}

/* 18.8.10 cellXfs CT_CellXfs */
function parseCXfs(t) {
	styles.CellXf = [];
	t[0].match(/<[^>]*>/g).forEach(function(x) {
		var y = parsexmltag(x);
		switch(y[0]) {
			case '<cellXfs': case '<cellXfs/>': case '</cellXfs>': break;

			/* 18.8.45 xf CT_Xf */
			case '<xf': if(y.numFmtId) y.numFmtId = parseInt(y.numFmtId, 10);
				styles.CellXf.push(y); break;
			case '</xf>': break;

			/* 18.8.1 alignment CT_CellAlignment */
			case '<alignment': break;

			/* 18.8.33 protection CT_CellProtection */
			case '<protection': break;

			case '<extLst': case '</extLst>': break;
			case '<ext': break;
			default: throw 'unrecognized ' + y[0] + ' in cellXfs';
		}
	});
}

/* 18.8 Styles CT_Stylesheet*/
function parseStyles(data) {
	/* 18.8.39 styleSheet CT_Stylesheet */
	var t;

	/* numFmts CT_NumFmts ? */
	if(t=data.match(/<numFmts([^>]*)>.*<\/numFmts>/)) parseNumFmts(t);

	/* fonts CT_Fonts ? */
	/* fills CT_Fills ? */
	/* borders CT_Borders ? */
	/* cellStyleXfs CT_CellStyleXfs ? */

	/* cellXfs CT_CellXfs ? */
	if(t=data.match(/<cellXfs([^>]*)>.*<\/cellXfs>/)) parseCXfs(t);

	/* dxfs CT_Dxfs ? */
	/* tableStyles CT_TableStyles ? */
	/* colors CT_Colors ? */
	/* extLst CT_ExtensionList ? */

	return styles;
}

function parseZip(zip) {
	var entries = Object.keys(zip.files);
	var keys = entries.filter(function(x){return x.substr(-1) != '/';}).sort();
	var dir = parseCT((zip.files['[Content_Types].xml']||{}).data);

	strs = {};
	if(dir.sst) strs=parseStrs(zip.files[dir.sst.replace(/^\//,'')].data);

	styles = {};
	if(dir.style) styles = parseStyles(zip.files[dir.style.replace(/^\//,'')].data);

	var wb = parseWB(zip.files[dir.workbooks[0].replace(/^\//,'')].data);
	var propdata = dir.coreprops.length !== 0 ? zip.files[dir.coreprops[0].replace(/^\//,'')].data : "";
	propdata += dir.extprops.length !== 0 ? zip.files[dir.extprops[0].replace(/^\//,'')].data : "";
	var props = propdata !== "" ? parseProps(propdata) : {};
	var deps = {};
	if(dir.calcchain) deps=parseDeps(zip.files[dir.calcchain.replace(/^\//,'')].data);
	var sheets = {}, i=0;
	if(!props.Worksheets) {
		/* Google Docs doesn't generate the appropriate metadata, so we impute: */
		var wbsheets = wb.Sheets;
		props.Worksheets = wbsheets.length;
		props.SheetNames = [];
		for(var j = 0; j != wbsheets.length; ++j) {
			props.SheetNames[j] = wbsheets[j].name;
		}
		for(i = 0; i != props.Worksheets; ++i) {
			sheets[props.SheetNames[i]]=parseSheet(zip.files['xl/worksheets/sheet' + (i+1) + '.xml'].data);
		}
	}
	else {
		for(i = 0; i != props.Worksheets; ++i) {
			sheets[props.SheetNames[i]]=parseSheet(zip.files[dir.sheets[i].replace(/^\//,'')].data);
		}
	}
	return {
		Directory: dir,
		Workbook: wb,
		Props: props,
		Deps: deps,
		Sheets: sheets,
		SheetNames: props.SheetNames,
		Strings: strs,
		Styles: styles,
		keys: keys,
		files: zip.files
	};
}

var _fs, jszip;
if(typeof JSZip !== "undefined") jszip = JSZip;
if (typeof exports !== 'undefined') {
	if (typeof module !== 'undefined' && module.exports) {
		if(typeof jszip === 'undefined') jszip = require('./jszip').JSZip;
		_fs = require('fs');
	}
}

function readSync(data, options) {
	var zip, d = data;
	var o = options||{};
	switch((o.type||"base64")){
		case "file": d = _fs.readFileSync(data).toString('base64');
			/* falls through */
		case "base64": zip = new jszip(d, { base64:true }); break;
		case "binary": zip = new jszip(d, { base64:false }); break;
	}
	return parseZip(zip);
}

function readFileSync(data, options) {
	var o = options||{}; o.type = 'file';
	return readSync(data, o);
}

this.read = readSync;
this.readFile = readFileSync;
this.parseZip = parseZip;
return this;

})();

var _chr = function(c) { return String.fromCharCode(c); };

function encode_col(col) { var s=""; for(++col; col; col=Math.floor((col-1)/26)) s = _chr(((col-1)%26) + 65) + s; return s; }
function encode_row(row) { return "" + (row + 1); }
function encode_cell(cell) { return encode_col(cell.c) + encode_row(cell.r); }

function decode_col(c) { var d = 0, i = 0; for(; i !== c.length; ++i) d = 26*d + c.charCodeAt(i) - 64; return d - 1; }
function decode_row(rowstr) { return Number(rowstr) - 1; }
function split_cell(cstr) { return cstr.replace(/(\$?[A-Z]*)(\$?[0-9]*)/,"$1,$2").split(","); }
function decode_cell(cstr) { var splt = split_cell(cstr); return { c:decode_col(splt[0]), r:decode_row(splt[1]) }; }
function decode_range(range) { var x =range.split(":").map(decode_cell); return {s:x[0],e:x[x.length-1]}; }
function encode_range(range) { return encode_cell(range.s) + ":" + encode_cell(range.e); }
/**
 * Convert a sheet into an array of objects where the column headers are keys.
 **/
function sheet_to_row_object_array(sheet){
	var val, rowObject, range, columnHeaders, emptyRow, C;
	var outSheet = [];
	if (sheet["!ref"]) {
		range = decode_range(sheet["!ref"]);

		columnHeaders = {};
		for (C = range.s.c; C <= range.e.c; ++C) {
			val = sheet[encode_cell({
				c: C,
				r: range.s.r
			})];
			if(val){
				switch(val.t) {
					case 's': case 'str': columnHeaders[C] = val.v; break;
					case 'n': columnHeaders[C] = val.v; break;
				}
			}
		}

		for (var R = range.s.r + 1; R <= range.e.r; ++R) {
			emptyRow = true;
			//Row number is recorded in the prototype
			//so that it doesn't appear when stringified.
			rowObject = Object.create({ __rowNum__ : R });
			for (C = range.s.c; C <= range.e.c; ++C) {
				val = sheet[encode_cell({
					c: C,
					r: R
				})];
				if(val !== undefined) switch(val.t){
					case 's': case 'str': case 'b': case 'n':
						if(val.v !== undefined) {
							rowObject[columnHeaders[C]] = val.v;
							emptyRow = false;
						}
						break;
					case 'e': break; /* thorw */
					default: throw 'unrecognized type ' + val.t;
				}
			}
			if(!emptyRow) {
				outSheet.push(rowObject);
			}
		}
	}
	return outSheet;
}

function sheet_to_csv(sheet) {
	var stringify = function stringify(val) {
		switch(val.t){
			case 'n': return val.v;
			case 's': case 'str': return JSON.stringify(val.v);
			case 'b': return val.v ? "TRUE" : "FALSE";
			case 'e': return ""; /* throw out value in case of error */
			default: throw 'unrecognized type ' + val.t;
		}
	};
	var out = "";
	if(sheet["!ref"]) {
		var r = utils.decode_range(sheet["!ref"]);
		for(var R = r.s.r; R <= r.e.r; ++R) {
			var row = [];
			for(var C = r.s.c; C <= r.e.c; ++C) {
				var val = sheet[utils.encode_cell({c:C,r:R})];
				row.push(val ? stringify(val) : "");
			}
			out += row.join(",") + "\n";
		}
	}
	return out;
}

var utils = {
	encode_col: encode_col,
	encode_row: encode_row,
	encode_cell: encode_cell,
	encode_range: encode_range,
	decode_col: decode_col,
	decode_row: decode_row,
	split_cell: split_cell,
	decode_cell: decode_cell,
	decode_range: decode_range,
	sheet_to_csv: sheet_to_csv,
	sheet_to_row_object_array: sheet_to_row_object_array
};

if(typeof require !== 'undefined' && typeof exports !== 'undefined') {
	exports.read = XLSX.read;
	exports.readFile = XLSX.readFile;
	exports.utils = utils;
	exports.main = function(args) {
		var zip = XLSX.read(args[0], {type:'file'});
		console.log(zip.Sheets);
	};
if(typeof module !== 'undefined' && require.main === module)
	exports.main(process.argv.slice(2));
}