sheetjs/bits/43_sstbin.js
SheetJS 51182e57ef version bump 0.9.10: nodejs performance
- xlsx.njs use dense mode by default
- CSV Streaming output for nodejs
- XLSX/XLSB error on password protected documents
- record hoppers switch on record number rather than name
2017-04-09 00:04:46 -04:00

50 lines
1.3 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_n, RT) {
switch(RT) {
case 0x009F: /* 'BrtBeginSst' */
s.Count = val[0]; s.Unique = val[1]; break;
case 0x0013: /* 'BrtSSTItem' */
s.push(val); break;
case 0x00A0: /* 'BrtEndSst' */
return true;
case 0x0023: /* 'BrtFRTBegin' */
pass = true; break;
case 0x0024: /* 'BrtFRTEnd' */
pass = false; break;
default:
if(R_n.indexOf("Begin") > 0) state.push(R_n);
else if(R_n.indexOf("End") > 0) state.pop();
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]));
/* FRTSST */
write_record(ba, "BrtEndSst");
return ba.end();
}