From 8561de6e2e7ad39a83686fc1ff8ef694d76393d4 Mon Sep 17 00:00:00 2001
From: SheetJS <dev@sheetjs.com>
Date: Fri, 22 Nov 2013 14:58:11 -0800
Subject: [PATCH] added web workers
---
index.html | 25 +++++++++++++++++++++----
xlsxworker.js | 11 +++++++++++
2 files changed, 32 insertions(+), 4 deletions(-)
create mode 100644 xlsxworker.js
diff --git a/index.html b/index.html
index 74e7de3..aeba2da 100644
--- a/index.html
+++ b/index.html
@@ -32,6 +32,19 @@
<script src="jszip.js"></script>
<script src="xlsx.js"></script>
<script>
+function xlsxworker(data, cb) {
+ var worker = new Worker('./xlsxworker.js');
+ worker.onmessage = function(e) {
+ switch(e.data.t) {
+ case 'ready': break;
+ case 'e': console.error(e.data.d);
+ case 'xlsx': cb(JSON.parse(e.data.d)); break;
+ }
+ };
+ var arr = btoa(String.fromCharCode.apply(null, new Uint8Array(data)));
+ worker.postMessage(arr);
+}
+
function get_radio_value( radioName ) {
var radios = document.getElementsByName( radioName );
for( var i = 0; i < radios.length; i++ ) {
@@ -111,10 +124,14 @@ function handleDrop(e) {
var name = f.name;
reader.onload = function(e) {
var data = e.target.result;
- //var wb = XLSX.read(data, {type: 'binary'});
- var arr = String.fromCharCode.apply(null, new Uint8Array(data));
- var wb = XLSX.read(btoa(arr), {type: 'base64'});
- process_wb(wb);
+ if(typeof Worker !== 'undefined') {
+ xlsxworker(data, process_wb);
+ } else {
+ //var wb = XLSX.read(data, {type: 'binary'});
+ var arr = String.fromCharCode.apply(null, new Uint8Array(data));
+ var wb = XLSX.read(btoa(arr), {type: 'base64'});
+ process_wb(wb);
+ }
};
//reader.readAsBinaryString(f);
reader.readAsArrayBuffer(f);
diff --git a/xlsxworker.js b/xlsxworker.js
new file mode 100644
index 0000000..c58d05c
--- /dev/null
+++ b/xlsxworker.js
@@ -0,0 +1,11 @@
+importScripts('jszip.js');
+importScripts('xlsx.js');
+postMessage({t:"ready"});
+
+onmessage = function (oEvent) {
+ var v;
+ try {
+ v = XLSX.read(oEvent.data, {type: 'base64'});
+ } catch(e) { postMessage({t:"e",d:e.stack}); }
+ postMessage({t:"xlsx", d:JSON.stringify(v)});
+};