sheetjs/demos/webpack/app.js

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/*jshint browser:true */
/*global XLSX */
var X = XLSX;
var rABS = typeof FileReader !== "undefined" && typeof FileReader.prototype !== "undefined" && typeof FileReader.prototype.readAsBinaryString !== "undefined";
if(!rABS) {
document.getElementsByName("userabs")[0].disabled = true;
document.getElementsByName("userabs")[0].checked = false;
}
var use_worker = typeof Worker !== 'undefined';
if(!use_worker) {
document.getElementsByName("useworker")[0].disabled = true;
document.getElementsByName("useworker")[0].checked = false;
}
var transferable = use_worker;
if(!transferable) {
document.getElementsByName("xferable")[0].disabled = true;
document.getElementsByName("xferable")[0].checked = false;
}
var wtf_mode = false;
function fixdata(data) {
var o = "", l = 0, w = 10240;
for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint8Array(data.slice(l*w,l*w+w)));
o+=String.fromCharCode.apply(null, new Uint8Array(data.slice(l*w)));
return o;
}
function ab2str(data) {
var o = "", l = 0, w = 10240;
for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint16Array(data.slice(l*w,l*w+w)));
o+=String.fromCharCode.apply(null, new Uint16Array(data.slice(l*w)));
return o;
}
function s2ab(s) {
var b = new ArrayBuffer(s.length*2), v = new Uint16Array(b);
for (var i=0; i != s.length; ++i) v[i] = s.charCodeAt(i);
return [v, b];
}
function xw_noxfer(data, cb) {
var worker = new Worker(XW.noxfer);
worker.onmessage = function(e) {
switch(e.data.t) {
case 'ready': break;
case 'e': console.error(e.data.d); break;
case XW.msg: cb(JSON.parse(e.data.d)); break;
}
};
var arr = rABS ? data : btoa(fixdata(data));
worker.postMessage({d:arr,b:rABS});
}
function xw_xfer(data, cb) {
var worker = new Worker(rABS ? XW.rABS : XW.norABS);
worker.onmessage = function(e) {
switch(e.data.t) {
case 'ready': break;
case 'e': console.error(e.data.d); break;
default: xx=ab2str(e.data).replace(/\n/g,"\\n").replace(/\r/g,"\\r"); console.log("done"); cb(JSON.parse(xx)); break;
}
};
if(rABS) {
var val = s2ab(data);
worker.postMessage(val[1], [val[1]]);
} else {
worker.postMessage(data, [data]);
}
}
function xw(data, cb) {
transferable = document.getElementsByName("xferable")[0].checked;
if(transferable) xw_xfer(data, cb);
else xw_noxfer(data, cb);
}
function get_radio_value( radioName ) {
var radios = document.getElementsByName( radioName );
for( var i = 0; i < radios.length; i++ ) {
if( radios[i].checked || radios.length === 1 ) {
return radios[i].value;
}
}
}
function to_json(workbook) {
var result = {};
workbook.SheetNames.forEach(function(sheetName) {
var roa = X.utils.sheet_to_json(workbook.Sheets[sheetName]);
if(roa.length > 0){
result[sheetName] = roa;
}
});
return result;
}
function to_csv(workbook) {
var result = [];
workbook.SheetNames.forEach(function(sheetName) {
var csv = X.utils.sheet_to_csv(workbook.Sheets[sheetName]);
if(csv.length > 0){
result.push("SHEET: " + sheetName);
result.push("");
result.push(csv);
}
});
return result.join("\n");
}
function to_formulae(workbook) {
var result = [];
workbook.SheetNames.forEach(function(sheetName) {
var formulae = X.utils.get_formulae(workbook.Sheets[sheetName]);
if(formulae.length > 0){
result.push("SHEET: " + sheetName);
result.push("");
result.push(formulae.join("\n"));
}
});
return result.join("\n");
}
var tarea = document.getElementById('b64data');
function b64it() {
if(typeof console !== 'undefined') console.log("onload", new Date());
var wb = X.read(tarea.value, {type: 'base64',WTF:wtf_mode});
process_wb(wb);
}
function process_wb(wb) {
var output = "";
switch(get_radio_value("format")) {
case "json":
output = JSON.stringify(to_json(wb), 2, 2);
break;
case "form":
output = to_formulae(wb);
break;
default:
output = to_csv(wb);
}
if(out.innerText === undefined) out.textContent = output;
else out.innerText = output;
if(typeof console !== 'undefined') console.log("output", new Date());
}
var drop = document.getElementById('drop');
function handleDrop(e) {
e.stopPropagation();
e.preventDefault();
rABS = document.getElementsByName("userabs")[0].checked;
use_worker = document.getElementsByName("useworker")[0].checked;
var files = e.dataTransfer.files;
var f = files[0];
{
var reader = new FileReader();
var name = f.name;
reader.onload = function(e) {
if(typeof console !== 'undefined') console.log("onload", new Date(), rABS, use_worker);
var data = e.target.result;
if(use_worker) {
xw(data, process_wb);
} else {
var wb;
if(rABS) {
wb = X.read(data, {type: 'binary'});
} else {
var arr = fixdata(data);
wb = X.read(btoa(arr), {type: 'base64'});
}
process_wb(wb);
}
};
if(rABS) reader.readAsBinaryString(f);
else reader.readAsArrayBuffer(f);
}
}
function handleDragover(e) {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
}
if(drop.addEventListener) {
drop.addEventListener('dragenter', handleDragover, false);
drop.addEventListener('dragover', handleDragover, false);
drop.addEventListener('drop', handleDrop, false);
}
var xlf = document.getElementById('xlf');
function handleFile(e) {
rABS = document.getElementsByName("userabs")[0].checked;
use_worker = document.getElementsByName("useworker")[0].checked;
var files = e.target.files;
var f = files[0];
{
var reader = new FileReader();
var name = f.name;
reader.onload = function(e) {
if(typeof console !== 'undefined') console.log("onload", new Date(), rABS, use_worker);
var data = e.target.result;
if(use_worker) {
xw(data, process_wb);
} else {
var wb;
if(rABS) {
wb = X.read(data, {type: 'binary'});
} else {
var arr = fixdata(data);
wb = X.read(btoa(arr), {type: 'base64'});
}
process_wb(wb);
}
};
if(rABS) reader.readAsBinaryString(f);
else reader.readAsArrayBuffer(f);
}
}
if(xlf.addEventListener) xlf.addEventListener('change', handleFile, false);