cdn requester: use worker as blob to avoid worker hosting problems (f…

…ixes #36)

src/cdn_requester.js

@@ -1,6 +1,6 @@
 // Copyright 2014 Flávio Ribeiro <[email protected]>.
 // All rights reserved.
-// Use of this source code is governed by Apache 
+// Use of this source code is governed by Apache
 // license that can be found in the LICENSE file.
 
 var BaseObject = require('base_object');
@@ -10,10 +10,26 @@ class CDNRequester extends BaseObject {
   get name() { return 'CDNRequester'; }
   initialize() {
     this.storage = Storage.getInstance()
-    this.utils = new Worker("asyncxhr.js")
+    this.utils = new Worker(this.getWorkerURL())
     this.utils.onmessage = (e) => this.resourceLoaded(e.data)
   }
 
+  getWorkerURL() {
+    console.log("using getWorkerURL")
+    var content = 'request=function(e,r,s){var n=new XMLHttpRequest;return n.open("GET",e,r?!0:!1),s&&(n.responseType=s),r?(n.onload=r,void n.send()):(n.send(),200==n.status?n.response:"")},base64ArrayBuffer=function(e){for(var r,s,n,t,a,o="",u="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",d=new Uint8Array(e),f=d.byteLength,i=f%3,c=f-i,p=0;c>p;p+=3)a=d[p]<<16|d[p+1]<<8|d[p+2],r=(16515072&a)>>18,s=(258048&a)>>12,n=(4032&a)>>6,t=63&a,o+=u[r]+u[s]+u[n]+u[t];return 1==i?(a=d[c],r=(252&a)>>2,s=(3&a)<<4,o+=u[r]+u[s]+"=="):2==i&&(a=d[c]<<8|d[c+1],r=(64512&a)>>10,s=(1008&a)>>4,n=(15&a)<<2,o+=u[r]+u[s]+u[n]+"="),o},resourceLoaded=function(e){var r=base64ArrayBuffer(e.currentTarget.response);this.postMessage(r)},this.addEventListener("message",function(e){request(e.data,resourceLoaded.bind(this),"arraybuffer")},!1);'
+    var blob
+    try {
+      blob = new Blob([content], {type: 'application/javascript'})
+    } catch (e) {
+      window.BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder
+      blob = new BlobBuilder()
+      blob.append(content)
+      blob = blob.getBlob()
+    }
+
+    return URL.createObjectURL(blob)
+  }
+
   requestResource(resource, callback) {
     this.callback = callback
     this.resource = resource