Function _removeBlobs

public/javascripts/socket.io.js:3146–3180

(obj, curKey, containingObject)

	exports.removeBlobs = function(data, callback) {
	  function _removeBlobs(obj, curKey, containingObject) {
	    if (!obj) return obj;

	    // convert any blob
	    if ((global.Blob && obj instanceof Blob) ||
	        (global.File && obj instanceof File)) {
	      pendingBlobs++;

	      // async filereader
	      var fileReader = new FileReader();
	      fileReader.onload = function() { // this.result == arraybuffer
	        if (containingObject) {
	          containingObject[curKey] = this.result;
	        }
	        else {
	          bloblessData = this.result;
	        }

	        // if nothing pending its callback time
	        if(! --pendingBlobs) {
	          callback(bloblessData);
	        }
	      };

	      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
	    } else if (isArray(obj)) { // handle array
	      for (var i = 0; i < obj.length; i++) {
	        _removeBlobs(obj[i], i, obj);
	      }
	    } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object
	      for (var key in obj) {
	        _removeBlobs(obj[key], key, obj);
	      }
	    }
	  }

	  var pendingBlobs = 0;
	  var bloblessData = data;