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XLS ExternSheet record (fixes #2907)

This commit is contained in:
SheetJS 2023-04-05 13:11:02 -04:00
parent 16dd8a6eae
commit ffbea71bc2
1 changed files with 4 additions and 2 deletions
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6
bits/39_xlsbiff.js
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@ -138,7 +138,7 @@ function parse_FtArray(blob, length/*::, ot*/) {
var ft = blob.read_shift(2);
blob.l-=2;
try {
fts.push(FtTab[ft](blob, tgt - blob.l));
fts[ft] = FtTab[ft](blob, tgt - blob.l);
} catch(e) { blob.l = tgt; return fts; }
}
if(blob.l != tgt) blob.l = tgt; //throw new Error("bad Object Ft-sequence");
@ -696,9 +696,11 @@ function parse_Lbl(blob, length, opts) {
};
}
/* [MS-XLS] 2.4.106 TODO: verify filename encoding */
/* [MS-XLS] 2.4.106 TODO: legacy record filename encoding */
function parse_ExternSheet(blob, length, opts) {
if(opts.biff < 8) return parse_BIFF5ExternSheet(blob, length, opts);
/* see issue 2907 */
if(!(opts.biff > 8) && (length == blob[blob.l] + (blob[blob.l+1] == 0x03 ? 1 : 0) + 1)) return parse_BIFF5ExternSheet(blob, length, opts);
var o = [], target = blob.l + length, len = blob.read_shift(opts.biff > 8 ? 4 : 2);
while(len-- !== 0) o.push(parse_XTI(blob, opts.biff > 8 ? 12 : 6, opts));
// [iSupBook, itabFirst, itabLast];