xsheetjs/bits/43_sstbin.js
SheetJS 8cd9e81569 flow annotations
no errors when running flow!
2017-03-12 14:02:46 -04:00

40 lines
1.1 KiB
JavaScript

/* [MS-XLSB] 2.4.219 BrtBeginSst */
function parse_BrtBeginSst(data, length) {
return [data.read_shift(4), data.read_shift(4)];
}
/* [MS-XLSB] 2.1.7.45 Shared Strings */
function parse_sst_bin(data, opts)/*:SST*/ {
var s/*:SST*/ = ([]/*:any*/);
var pass = false;
recordhopper(data, function hopper_sst(val, R, RT) {
switch(R.n) {
case 'BrtBeginSst': s.Count = val[0]; s.Unique = val[1]; break;
case 'BrtSSTItem': s.push(val); break;
case 'BrtEndSst': return true;
/* TODO: produce a test case with a future record */
case 'BrtFRTBegin': pass = true; break;
case 'BrtFRTEnd': pass = false; break;
default: if(!pass || opts.WTF) throw new Error("Unexpected record " + RT + " " + R.n);
}
});
return s;
}
function write_BrtBeginSst(sst, o) {
if(!o) o = new_buf(8);
o.write_shift(4, sst.Count);
o.write_shift(4, sst.Unique);
return o;
}
var write_BrtSSTItem = write_RichStr;
function write_sst_bin(sst, opts) {
var ba = buf_array();
write_record(ba, "BrtBeginSst", write_BrtBeginSst(sst));
for(var i = 0; i < sst.length; ++i) write_record(ba, "BrtSSTItem", write_BrtSSTItem(sst[i]));
write_record(ba, "BrtEndSst");
return ba.end();
}