forked from sheetjs/sheetjs
136 lines
4.4 KiB
TypeScript
136 lines
4.4 KiB
TypeScript
/// <reference path="src/types.ts"/>
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/* [MS-XLSB] 2.4.698 BrtMdtinfo */
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interface BrtMdtinfo {
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flags: number;
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version: number;
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name: string;
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}
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function parse_BrtMdtinfo(data: ReadableData, length: number): BrtMdtinfo {
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return {
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flags: data.read_shift(4),
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version: data.read_shift(4),
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name: parse_XLWideString(data, length - 8)
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};
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}
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function write_BrtMdtinfo(data: BrtMdtinfo): RawData {
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var o = new_buf(12 + 2 * data.name.length);
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o.write_shift(4, data.flags);
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o.write_shift(4, data.version);
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write_XLWideString(data.name, o);
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return o.slice(0, o.l);
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}
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/* [MS-XLSB] 2.4.697 BrtMdb */
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type Mdir = [number, number]; // "t", "v" in XLSX parlance
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type BrtMdb = Mdir[];
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function parse_BrtMdb(data: ReadableData/*, length: number*/): BrtMdb {
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var out: Mdir[] = [];
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var cnt = data.read_shift(4);
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while(cnt-- > 0) out.push([data.read_shift(4), data.read_shift(4)]);
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return out;
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}
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function write_BrtMdb(mdb: BrtMdb): RawData {
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var o = new_buf(4 + 8 * mdb.length);
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o.write_shift(4, mdb.length);
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for(var i = 0; i < mdb.length; ++i) {
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o.write_shift(4, mdb[i][0]);
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o.write_shift(4, mdb[i][1]);
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}
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return o;
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}
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/* [MS-XLSB] 2.4.72 BrtBeginEsfmd */
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function write_BrtBeginEsfmd(cnt: number, name: string): RawData {
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var o = new_buf(8 + 2 * name.length);
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o.write_shift(4, cnt);
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write_XLWideString(name, o);
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return o.slice(0, o.l);
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}
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/* [MS-XLSB] 2.4.73 BrtBeginEsmdb */
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function parse_BrtBeginEsmdb(data: ReadableData/*, length: number*/): boolean {
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data.l += 4;
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return data.read_shift(4) != 0;
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}
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function write_BrtBeginEsmdb(cnt: number, cm: boolean): RawData {
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var o = new_buf(8);
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o.write_shift(4, cnt);
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o.write_shift(4, cm ? 1 : 0);
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return o;
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}
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/* [MS-XLSB] 2.1.7.34 Metadata */
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function parse_xlmeta_bin(data: RawData, name: string, _opts?: ParseXLMetaOptions): XLMeta {
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var out: XLMeta = { Types: [], Cell: [], Value: [] };
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var opts = _opts || {};
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var state: number[] = [];
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var pass = false;
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var metatype: 0 | 1 | 2 = 2;
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recordhopper(data, (val, R, RT) => {
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switch(RT) {
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// case 0x014C: /* BrtBeginMetadata */
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// case 0x014D: /* BrtEndMetadata */
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// case 0x014E: /* BrtBeginEsmdtinfo */
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// case 0x0150: /* BrtEndEsmdtinfo */
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// case 0x0153: /* BrtBeginEsfmd */
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// case 0x0154: /* BrtEndEsfmd */
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// case 0x0034: /* BrtBeginFmd */
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// case 0x0035: /* BrtEndFmd */
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// case 0x1000: /* BrtBeginDynamicArrayPr */
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// case 0x1001: /* BrtEndDynamicArrayPr */
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// case 0x138A: /* BrtBeginRichValueBlock */
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// case 0x138B: /* BrtEndRichValueBlock */
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case 0x014F: /* BrtMdtinfo */
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out.Types.push({name: (val as BrtMdtinfo).name}); break;
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case 0x0033: /* BrtMdb */
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(val as BrtMdb).forEach(r => {
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if(metatype == 1) out.Cell.push({type: out.Types[r[0] - 1].name, index: r[1] });
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else if(metatype == 0) out.Value.push({type: out.Types[r[0] - 1].name, index: r[1] });
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}); break;
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case 0x0151: /* BrtBeginEsmdb */
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metatype = (val as boolean) ? 1 /* cell */ : 0 /* value */; break;
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case 0x0152: /* BrtEndEsmdb */
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metatype = 2; break;
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case 0x0023: /* BrtFRTBegin */
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state.push(RT); pass = true; break;
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case 0x0024: /* BrtFRTEnd */
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state.pop(); pass = false; break;
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default:
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if(R.T){/* empty */}
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else if(!pass || (opts.WTF && state[state.length-1] != 0x0023 /* BrtFRTBegin */)) throw new Error("Unexpected record 0x" + RT.toString(16));
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}
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});
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return out;
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}
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function write_xlmeta_bin() {
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var ba = buf_array();
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write_record(ba, 0x014C /* BrtBeginMetadata */);
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write_record(ba, 0x014E /* BrtBeginEsmdtinfo */, write_UInt32LE(1));
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write_record(ba, 0x014F /* BrtMdtinfo */, write_BrtMdtinfo({
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name: "XLDAPR",
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version: 120000,
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flags: 0xD06AC0B0
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}));
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write_record(ba, 0x0150 /* BrtEndEsmdtinfo */);
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/* [ESSTR] [ESMDX] */
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write_record(ba, 0x0153 /* BrtBeginEsfmd */, write_BrtBeginEsfmd(1, "XLDAPR"));
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write_record(ba, 0x0034 /* BrtBeginFmd */);
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write_record(ba, 0x0023 /* BrtFRTBegin */, write_UInt32LE(0x0202));
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write_record(ba, 0x1000 /* BrtBeginDynamicArrayPr */, write_UInt32LE(0));
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write_record(ba, 0x1001 /* BrtEndDynamicArrayPr */, writeuint16(1));
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write_record(ba, 0x0024 /* BrtFRTEnd */);
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write_record(ba, 0x0035 /* BrtEndFmd */);
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write_record(ba, 0x0154 /* BrtEndEsfmd */);
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write_record(ba, 0x0151 /* BrtBeginEsmdb */, write_BrtBeginEsmdb(1, true));
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write_record(ba, 0x0033 /* BrtMdb */, write_BrtMdb([[1, 0]]));
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write_record(ba, 0x0152 /* BrtEndEsmdb */);
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/* *FRT */
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write_record(ba, 0x014D /* BrtEndMetadata */);
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return ba.end();
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}
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