/* 18.8.31 numFmts CT_NumFmts */
function parseNumFmts(t, opts) {
	styles.NumberFmt = [];
	for(var 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=utf8read(unescapexml(y.formatCode)), i=parseInt(y.numFmtId,10);
				styles.NumberFmt[i] = f; if(i>0) SSF.load(f,i);
			} break;
			default: if(opts.WTF) throw 'unrecognized ' + y[0] + ' in numFmts';
		}
	});
}

/* 18.8.10 cellXfs CT_CellXfs */
function parseCXfs(t, opts) {
	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': delete y[0];
				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': case '<alignment/>': break;

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

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

/* 18.8 Styles CT_Stylesheet*/
function parse_sty_xml(data, opts) {
	/* 18.8.39 styleSheet CT_Stylesheet */
	var t;

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

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

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

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

	return styles;
}