sheetjs/demos/function/mcstream.js

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/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
/* eslint-env node */
// cat file.xlsx | curl --header 'content-type: application/octet-stream' --data-binary @- "http://localhost:3000/"
const XLSX = require('xlsx');
const process_RS = (stream, cb) => {
var buffers = [];
stream.on('data', function(data) { buffers.push(data); });
stream.on('end', function() {
var buffer = Buffer.concat(buffers);
var workbook = XLSX.read(buffer, {type:"buffer"});
cb(workbook);
});
};
module.exports = (hook) => {
process_RS(hook.req, (wb) => {
hook.res.writeHead(200, { 'Content-Type': 'text/csv' });
const stream = XLSX.stream.to_csv(wb.Sheets[wb.SheetNames[0]]);
stream.pipe(hook.res);
});
};