sheetjs/demos/meteor/client/main.js

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2017-05-24 22:52:35 +00:00
import { Template } from 'meteor/templating';
import { ReactiveVar } from 'meteor/reactive-var';
import './main.html';
const XLSX = require('xlsx');
Template.read.events({
'change input' (evt, instance) {
/* "Browser file upload form element" from SheetJS README */
const file = evt.currentTarget.files[0];
const reader = new FileReader();
reader.onload = function(e) {
const data = e.target.result;
const name = file.name;
/* Meteor magic */
Meteor.call('upload', data, name, function(err, wb) {
if(err) console.error(err);
else {
/* do something here -- this just dumps an array of arrays to console */
console.log(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]], {header:1}));
document.getElementById('out').innerHTML = (XLSX.utils.sheet_to_html(wb.Sheets[wb.SheetNames[0]]));
}
});
};
reader.readAsBinaryString(file);
},
});
Template.write.events({
'click button' (evt, instance) {
Meteor.call('download', function(err, wb) {
if(err) console.error(err);
else {
console.log(wb);
/* "Browser download file" from SheetJS README */
var wopts = { bookType:'xlsx', bookSST:false, type:'binary' };
var wbout = XLSX.write(wb, wopts);
saveAs(new Blob([s2ab(wbout)],{type:"application/octet-stream"}), "meteor.xlsx");
}
});
},
});
function s2ab(s) {
var buf = new ArrayBuffer(s.length);
var view = new Uint8Array(buf);
for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
return buf;
}