sheetjs-clone/bits/97_node.js

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if(has_buf && typeof require != 'undefined') (function() {
var Readable = require('stream').Readable;
var write_csv_stream = function(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
var stream = Readable();
var o = opts == null ? {} : opts;
if(sheet == null || sheet["!ref"] == null) { stream.push(null); return stream; }
var r = safe_decode_range(sheet["!ref"]);
var FS = o.FS !== undefined ? o.FS : ",", fs = FS.charCodeAt(0);
var RS = o.RS !== undefined ? o.RS : "\n", rs = RS.charCodeAt(0);
var endregex = new RegExp((FS=="|" ? "\\|" : FS)+"+$");
var row/*:?string*/ = "", cols/*:Array<string>*/ = [];
o.dense = Array.isArray(sheet);
var colinfo/*:Array<ColInfo>*/ = o.skipHidden && sheet["!cols"] || [];
var rowinfo/*:Array<RowInfo>*/ = o.skipHidden && sheet["!rows"] || [];
for(var C = r.s.c; C <= r.e.c; ++C) if (!((colinfo[C]||{}).hidden)) cols[C] = encode_col(C);
var R = r.s.r;
var BOM = false;
stream._read = function() {
if(!BOM) { BOM = true; return stream.push("\uFEFF"); }
if(R > r.e.r) return stream.push(null);
while(R <= r.e.r) {
++R;
if ((rowinfo[R-1]||{}).hidden) continue;
row = make_csv_row(sheet, r, R-1, cols, fs, rs, FS, o);
if(row != null) {
if(o.strip) row = row.replace(endregex,"");
stream.push(row + RS);
break;
}
}
};
return stream;
};
var write_html_stream = function(ws/*:Worksheet*/, opts/*:?Sheet2HTMLOpts*/) {
var stream = Readable();
var o = opts || {};
var header = o.header != null ? o.header : HTML_.BEGIN;
var footer = o.footer != null ? o.footer : HTML_.END;
stream.push(header);
var r = decode_range(ws['!ref']);
o.dense = Array.isArray(ws);
stream.push(HTML_._preamble(ws, r, o));
var R = r.s.r;
var end = false;
stream._read = function() {
if(R > r.e.r) {
if(!end) { end = true; stream.push("</table>" + footer); }
return stream.push(null);
}
while(R <= r.e.r) {
stream.push(HTML_._row(ws, r, R, o));
++R;
break;
}
};
return stream;
};
var write_json_stream = function(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
var stream = Readable({objectMode:true});
if(sheet == null || sheet["!ref"] == null) { stream.push(null); return stream; }
var val = {t:'n',v:0}, header = 0, offset = 1, hdr/*:Array<any>*/ = [], v=0, vv="";
var r = {s:{r:0,c:0},e:{r:0,c:0}};
var o = opts || {};
var range = o.range != null ? o.range : sheet["!ref"];
if(o.header === 1) header = 1;
else if(o.header === "A") header = 2;
else if(Array.isArray(o.header)) header = 3;
switch(typeof range) {
case 'string': r = safe_decode_range(range); break;
case 'number': r = safe_decode_range(sheet["!ref"]); r.s.r = range; break;
default: r = range;
}
if(header > 0) offset = 0;
var rr = encode_row(r.s.r);
var cols/*:Array<string>*/ = [];
var counter = 0;
var dense = Array.isArray(sheet);
var R = r.s.r, C = 0, CC = 0;
if(dense && !sheet[R]) sheet[R] = [];
for(C = r.s.c; C <= r.e.c; ++C) {
cols[C] = encode_col(C);
val = dense ? sheet[R][C] : sheet[cols[C] + rr];
switch(header) {
case 1: hdr[C] = C - r.s.c; break;
case 2: hdr[C] = cols[C]; break;
case 3: hdr[C] = o.header[C - r.s.c]; break;
default:
if(val == null) val = {w: "__EMPTY", t: "s"};
vv = v = format_cell(val, null, o);
counter = 0;
for(CC = 0; CC < hdr.length; ++CC) if(hdr[CC] == vv) vv = v + "_" + (++counter);
hdr[C] = vv;
}
}
R = r.s.r + offset;
stream._read = function() {
if(R > r.e.r) return stream.push(null);
while(R <= r.e.r) {
//if ((rowinfo[R-1]||{}).hidden) continue;
var row = make_json_row(sheet, r, R, cols, header, hdr, dense, o);
++R;
if((row.isempty === false) || (header === 1 ? o.blankrows !== false : !!o.blankrows)) {
stream.push(row.row);
break;
}
}
};
return stream;
};
XLSX.stream = {
to_json: write_json_stream,
to_html: write_html_stream,
to_csv: write_csv_stream
};
})();