Refactor out BufferStream

lib/common/bufferstream.js

@@ -0,0 +1,47 @@
+/**
+ * Copyright 2014 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+var stream = require('stream');
+var nodeutil = require('util');
+
+/**
+ * Readable stream implementation to stream the given buffer.
+ *
+ * @constructor
+ *
+ * @param {buffer} buffer - The buffer to stream.
+ *
+ * @private
+ */
+function BufferStream(buffer) {
+  stream.Readable.call(this);
+  this.data = buffer;
+}
+
+nodeutil.inherits(BufferStream, stream.Readable);
+
+/**
+ * Push the provided buffer to the stream.
+ * @private
+ */
+BufferStream.prototype._read = function() {
+  this.push(this.data);
+  this.push(null);
+};
+
+module.exports = BufferStream;

lib/storage/index.js

@@ -22,8 +22,6 @@
 
 var crypto = require('crypto');
 var duplexify = require('duplexify');
-var nodeutil = require('util');
-var stream = require('stream');
 var uuid = require('node-uuid');
 
 /**
@@ -38,6 +36,12 @@ var conn = require('../common/connection.js');
  */
 var util = require('../common/util.js');
 
+/**
+ * @type module:common/bufferstream
+ * @private
+ */
+var BufferStream = require('../common/bufferstream.js');
+
 /**
  * Required scopes for Google Cloud Storage API.
  * @const {array}
@@ -57,31 +61,6 @@ var STORAGE_BASE_URL = 'https://www.googleapis.com/storage/v1/b';
  */
 var STORAGE_UPLOAD_BASE_URL = 'https://www.googleapis.com/upload/storage/v1/b';
 
-/**
- * Readable stream implementation to stream the given buffer.
- *
- * @constructor
- *
- * @param {buffer} buffer - The buffer to stream.
- *
- * @private
- */
-function BufferStream(buffer) {
-  stream.Readable.call(this);
-  this.data = buffer;
-}
-
-nodeutil.inherits(BufferStream, stream.Readable);
-
-/**
- * Push the provided buffer to the stream.
- * @private
- */
-BufferStream.prototype._read = function() {
-  this.push(this.data);
-  this.push(null);
-};
-
 /**
  * Google Cloud Storage allows you to store data on Google infrastructure. See
  * the guide on {@link https://developers.google.com/storage} to create a