sheetjs/bits/28_binstructs.js
SheetJS 009946339c version bump 0.7.5: more performance
- eliminated functional constructs in hot functions
- format try-catch block extracted into new function
- cpexcel + codepage updated to 1.2.0
- more efficient (and correct) clean implementation of RGB/HSL/tint algorithms
- xlsx binary --all option enables every extra formatting and saving option
- column widths parsed and saved (requires cellStyles:true)
2014-06-02 01:19:07 -04:00

149 lines
3.6 KiB
JavaScript

/* [MS-XLSB] 2.5.143 */
var parse_StrRun = function(data, length) {
return { ich: data.read_shift(2), ifnt: data.read_shift(2) };
};
/* [MS-XLSB] 2.1.7.121 */
var parse_RichStr = function(data, length) {
var start = data.l;
var flags = data.read_shift(1);
var fRichStr = flags & 1, fExtStr = flags & 2;
var str = parse_XLWideString(data);
var rgsStrRun = [];
var z = {
t: str,
r:"<t>" + escapexml(str) + "</t>",
h: str
};
if(fRichStr) {
/* TODO: formatted string */
var dwSizeStrRun = data.read_shift(4);
for(var i = 0; i != dwSizeStrRun; ++i) rgsStrRun.push(parse_StrRun(data));
z.r = JSON.stringify(rgsStrRun);
}
if(fExtStr) {
/* TODO: phonetic string */
}
data.l = start + length;
return z;
};
/* [MS-XLSB] 2.5.9 */
function parse_Cell(data) {
var col = data.read_shift(4);
var iStyleRef = data.read_shift(2);
iStyleRef += data.read_shift(1) <<16;
var fPhShow = data.read_shift(1);
return { c:col, iStyleRef: iStyleRef };
}
/* [MS-XLSB] 2.5.21 */
var parse_CodeName = function(data, length) { return parse_XLWideString(data, length); };
/* [MS-XLSB] 2.5.166 */
var parse_XLNullableWideString = function(data) {
var cchCharacters = data.read_shift(4);
return cchCharacters === 0 || cchCharacters === 0xFFFFFFFF ? "" : data.read_shift('dbcs', cchCharacters);
};
var write_XLNullableWideString = function(data, o) {
if(!o) o = new_buf(127);
o.write_shift(4, data.length || 0xFFFFFFFF);
if(data.length > 0) o.write_shift('dbcs', data);
return o;
};
/* [MS-XLSB] 2.5.168 */
var parse_XLWideString = function(data) {
var cchCharacters = data.read_shift(4);
return cchCharacters === 0 ? "" : data.read_shift('dbcs', cchCharacters);
};
var write_XLWideString = function(data, o) {
if(!o) o = new_buf(127);
o.write_shift(4, data.length);
if(data.length > 0) o.write_shift('dbcs', data);
return o;
};
/* [MS-XLSB] 2.5.114 */
var parse_RelID = parse_XLNullableWideString;
var write_RelID = write_XLNullableWideString;
/* [MS-XLSB] 2.5.122 */
function parse_RkNumber(data) {
var b = data.slice(data.l, data.l+4);
var fX100 = b[0] & 1, fInt = b[0] & 2;
data.l+=4;
b[0] &= ~3;
var RK = fInt === 0 ? __readDoubleLE([0,0,0,0,b[0],b[1],b[2],b[3]],0) : __readInt32LE(b,0)>>2;
return fX100 ? RK/100 : RK;
}
/* [MS-XLSB] 2.5.153 */
var parse_UncheckedRfX = function(data) {
var cell = {s: {}, e: {}};
cell.s.r = data.read_shift(4);
cell.e.r = data.read_shift(4);
cell.s.c = data.read_shift(4);
cell.e.c = data.read_shift(4);
return cell;
};
var write_UncheckedRfX = function(r, o) {
if(!o) o = new_buf(16);
o.write_shift(4, r.s.r);
o.write_shift(4, r.e.r);
o.write_shift(4, r.s.c);
o.write_shift(4, r.e.c);
return o;
};
/* [MS-XLSB] 2.5.171 */
function parse_Xnum(data, length) { return data.read_shift('ieee754'); }
function write_Xnum(data, o) { return (o || new_buf(8)).write_shift('ieee754', data); }
/* [MS-XLSB] 2.5.198.2 */
var BErr = {
0x00: "#NULL!",
0x07: "#DIV/0!",
0x0F: "#VALUE!",
0x17: "#REF!",
0x1D: "#NAME?",
0x24: "#NUM!",
0x2A: "#N/A",
0x2B: "#GETTING_DATA",
0xFF: "#WTF?"
};
var RBErr = evert(BErr);
/* [MS-XLSB] 2.4.321 BrtColor */
function parse_BrtColor(data, length) {
var read = data.read_shift.bind(data);
var out = {};
var d = read(1);
out.fValidRGB = d & 1;
out.xColorType = d >>> 1;
out.index = read(1);
out.nTintAndShade = read(2, 'i');
out.bRed = read(1);
out.bGreen = read(1);
out.bBlue = read(1);
out.bAlpha = read(1);
}
/* [MS-XLSB] 2.5.52 */
function parse_FontFlags(data, length) {
var d = data.read_shift(1);
data.l++;
var out = {
fItalic: d & 0x2,
fStrikeout: d & 0x8,
fOutline: d & 0x10,
fShadow: d & 0x20,
fCondense: d & 0x40,
fExtend: d & 0x80
};
return out;
}