forked from sheetjs/sheetjs
SheetJS
08bb7e6e60
- `writeFile` support chrome extension (fixes #1051 h/t @atkinsam) - demo refresh
41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
|
|
/* eslint-env node */
|
|
// base64 sheetjs.xlsb | curl -F "data=@-;filename=test.xlsb" http://localhost:3000/LambdaProxy
|
|
|
|
'use strict';
|
|
var XLSX = require('xlsx');
|
|
var Busboy = require('busboy');
|
|
|
|
exports.handler = function(event, context, callback) {
|
|
/* set up busboy */
|
|
var ctype = event.headers['Content-Type']||event.headers['content-type'];
|
|
var bb = new Busboy({headers:{'content-type':ctype}});
|
|
|
|
/* busboy is evented; accumulate the fields and files manually */
|
|
var fields = {}, files = {};
|
|
bb.on('error', function(err) { console.log('err', err); callback(err); });
|
|
bb.on('field', function(fieldname, val) {fields[fieldname] = val });
|
|
bb.on('file', function(fieldname, file, filename) {
|
|
/* concatenate the individual data buffers */
|
|
var buffers = [];
|
|
file.on('data', function(data) { buffers.push(data); });
|
|
file.on('end', function() { files[fieldname] = [Buffer.concat(buffers), filename]; });
|
|
});
|
|
|
|
/* on the finish event, all of the fields and files are ready */
|
|
bb.on('finish', function() {
|
|
/* grab the first file */
|
|
var f = files[Object.keys(files)[0]];
|
|
if(!f) callback(new Error("Must submit a file for processing!"));
|
|
|
|
/* f[0] is a buffer, convert to string and interpret as Base64 */
|
|
var wb = XLSX.read(f[0].toString(), {type:"base64"});
|
|
|
|
/* grab first worksheet and convert to CSV */
|
|
var ws = wb.Sheets[wb.SheetNames[0]];
|
|
callback(null, { body: XLSX.utils.sheet_to_csv(ws) });
|
|
});
|
|
|
|
bb.end(event.body);
|
|
};
|