sheetjs-clone/modules/51_xlsbmeta.ts
SheetJS e14aee3e51 version bump 0.18.3
- XLSX / XLSB dynamic array formulae
- use Uint8Array when available in write (fixes #2539 h/t @RScherzer)
- mini build cleanup to satiate webpack (fixes #2526 #2530)
2022-03-03 03:35:39 -05:00

121 lines
3.6 KiB
TypeScript

/// <reference path="src/types.ts"/>
/* [MS-XLSB] 2.4.698 BrtMdtinfo */
interface BrtMdtinfo {
flags: number;
version: number;
name: string;
}
function parse_BrtMdtinfo(data: ReadableData, length: number): BrtMdtinfo {
return {
flags: data.read_shift(4),
version: data.read_shift(4),
name: parse_XLWideString(data, length - 8)
};
}
function write_BrtMdtinfo(data: BrtMdtinfo): RawData {
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);
}
/* [MS-XLSB] 2.4.697 BrtMdb */
type Mdir = [number, number]; // "t", "v" in XLSX parlance
type BrtMdb = Mdir[];
function write_BrtMdb(mdb: BrtMdb): RawData {
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;
}
/* [MS-XLSB] 2.4.72 BrtBeginEsfmd */
function write_BrtBeginEsfmd(cnt: number, name: string): RawData {
var o = new_buf(8 + 2 * name.length);
o.write_shift(4, cnt);
write_XLWideString(name, o);
return o.slice(0, o.l);
}
/* [MS-XLSB] 2.4.73 BrtBeginEsmdb */
function write_BrtBeginEsmdb(cnt: number, cm: boolean): RawData {
var o = new_buf(8);
o.write_shift(4, cnt);
o.write_shift(4, cm ? 1 : 0);
return o;
}
/* [MS-XLSB] 2.1.7.34 Metadata */
function parse_xlmeta_bin(data, name: string, _opts?: ParseXLMetaOptions): XLMeta {
var out: XLMeta = { Types: [] };
var opts = _opts || {};
var state: string[] = [];
var pass = false;
recordhopper(data, (val, R_n, RT) => {
switch(RT) {
// case 0x014C: /* 'BrtBeginMetadata' */
// case 0x014D: /* 'BrtEndMetadata' */
// case 0x014E: /* 'BrtBeginEsmdtinfo' */
// case 0x0150: /* 'BrtEndEsmdtinfo' */
// case 0x0151: /* 'BrtBeginEsmdb' */
// case 0x0152: /* 'BrtEndEsmdb' */
// case 0x0153: /* 'BrtBeginEsfmd' */
// case 0x0154: /* 'BrtEndEsfmd' */
// case 0x0034: /* 'BrtBeginFmd' */
// case 0x0035: /* 'BrtEndFmd' */
// case 0x1000: /* 'BrtBeginDynamicArrayPr' */
// case 0x1001: /* 'BrtEndDynamicArrayPr' */
// case 0x138A: /* 'BrtBeginRichValueBlock' */
// case 0x138B: /* 'BrtEndRichValueBlock' */
case 0x014F: /* 'BrtMdtinfo' */
out.Types.push({name: (val as BrtMdtinfo).name});
break;
case 0x0033: /* 'BrtMdb' */
break;
case 0x0023: /* 'BrtFRTBegin' */
state.push(R_n); pass = true; break;
case 0x0024: /* 'BrtFRTEnd' */
state.pop(); pass = false; break;
default:
if((R_n||"").indexOf("Begin") > 0){/* empty */}
else if((R_n||"").indexOf("End") > 0){/* empty */}
else if(!pass || (opts.WTF && state[state.length-1] != "BrtFRTBegin")) throw new Error("Unexpected record " + RT + " " + R_n);
}
});
return out;
}
function write_xlmeta_bin() {
var ba = buf_array();
write_record(ba, "BrtBeginMetadata");
write_record(ba, "BrtBeginEsmdtinfo", write_UInt32LE(1));
write_record(ba, "BrtMdtinfo", write_BrtMdtinfo({
name: "XLDAPR",
version: 120000,
flags: 0xD06AC0B0
}));
write_record(ba, "BrtEndEsmdtinfo");
/* [ESSTR] [ESMDX] */
write_record(ba, "BrtBeginEsfmd", write_BrtBeginEsfmd(1, "XLDAPR"));
write_record(ba, "BrtBeginFmd");
write_record(ba, "BrtFRTBegin", write_UInt32LE(0x0202));
write_record(ba, "BrtBeginDynamicArrayPr", write_UInt32LE(0));
write_record(ba, "BrtEndDynamicArrayPr", writeuint16(1));
write_record(ba, "BrtFRTEnd");
write_record(ba, "BrtEndFmd");
write_record(ba, "BrtEndEsfmd");
write_record(ba, "BrtBeginEsmdb", write_BrtBeginEsmdb(1, true));
write_record(ba, "BrtMdb", write_BrtMdb([[1, 0]]));
write_record(ba, "BrtEndEsmdb");
/* *FRT */
write_record(ba, "BrtEndMetadata");
return ba.end();
}