expose ePub, add request, add unarchive/jszip

src/request.js

@@ -0,0 +1,94 @@
+var RSVP = require('rsvp');
+
+function request(url, type, withCredentials, headers) {
+  var supportsURL = window.URL;
+  var BLOB_RESPONSE = supportsURL ? "blob" : "arraybuffer";
+
+  var deferred = new RSVP.defer();
+
+  var xhr = new XMLHttpRequest();
+
+  //-- Check from PDF.js:
+  //   https://github.com/mozilla/pdf.js/blob/master/web/compatibility.js
+  var xhrPrototype = XMLHttpRequest.prototype;
+
+  var header;
+
+  if (!('overrideMimeType' in xhrPrototype)) {
+    // IE10 might have response, but not overrideMimeType
+    Object.defineProperty(xhrPrototype, 'overrideMimeType', {
+      value: function xmlHttpRequestOverrideMimeType(mimeType) {}
+    });
+  }
+  if(withCredentials) {
+    xhr.withCredentials = true;
+  }
+
+  xhr.open("GET", url, true);
+
+  for(header in headers) {
+    xhr.setRequestHeader(header, headers[header]);
+  }
+
+  xhr.onreadystatechange = handler;
+
+  if(type == 'blob'){
+    xhr.responseType = BLOB_RESPONSE;
+  }
+
+  if(type == "json") {
+    xhr.setRequestHeader("Accept", "application/json");
+  }
+
+  if(type == 'xml') {
+    xhr.overrideMimeType('text/xml');
+  }
+
+  xhr.send();
+
+  function handler() {
+    if (this.readyState === this.DONE) {
+      if (this.status === 200 || this.responseXML ) { //-- Firefox is reporting 0 for blob urls
+        var r;
+
+        if(type == 'xml'){
+
+          // If this.responseXML wasn't set, try to parse using a DOMParser from text
+          if(!this.responseXML){
+            r = new DOMParser().parseFromString(this.response, "text/xml");
+          } else {
+            r = this.responseXML;
+          }
+
+        }else
+        if(type == 'json'){
+          r = JSON.parse(this.response);
+        }else
+        if(type == 'blob'){
+
+          if(supportsURL) {
+            r = this.response;
+          } else {
+            //-- Safari doesn't support responseType blob, so create a blob from arraybuffer
+            r = new Blob([this.response]);
+          }
+
+        }else{
+          r = this.response;
+        }
+
+        deferred.resolve(r);
+      } else {
+        deferred.reject({
+          status: this.status,
+          message : this.response,
+          stack : new Error().stack
+        });
+      }
+    }
+  }
+
+  return deferred.promise;
+};
+
+module.exports = request;