40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
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const XLSX = require('xlsx');
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let data = "a,b,c\n1,2,3".split("\n").map(x => x.split(","));
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process.on('message', ([m, data] = _) => {
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switch(m) {
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case 'load data': load_data(data); break;
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case 'get data': get_data(data); break;
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case 'get file': get_file(data); break;
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}
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});
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function load_data(file) {
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var wb = XLSX.readFile(file);
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/* generate array of arrays */
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data = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]], {header:1});
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console.log(data);
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process.send("done");
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}
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/* helper to generate the workbook object */
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function make_book() {
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var ws = XLSX.utils.aoa_to_sheet(data);
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var wb = XLSX.utils.book_new();
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XLSX.utils.book_append_sheet(wb, ws, "SheetJS");
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return wb;
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}
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function get_data(type) {
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var wb = make_book();
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/* send buffer back */
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process.send(XLSX.write(wb, {type:'buffer', bookType:type}));
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}
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function get_file(file) {
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var wb = make_book();
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/* write using XLSX.writeFile */
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XLSX.writeFile(wb, file);
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process.send("wrote to " + file + "\n");
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}
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