1 files changed, 50 insertions, 0 deletions
diff --git a/trunk/infrastructure/framework-src/modules/blob.js b/trunk/infrastructure/framework-src/modules/blob.js
new file mode 100644
index 0000000..af788a0
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+++ b/trunk/infrastructure/framework-src/modules/blob.js
@@ -0,0 +1,50 @@
+/**
+ * Copyright 2009 Google Inc.
+ * 
+ * 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.
+ */
+
+
+
+/**
+ * Constructs and returns a new Blob from a JavaScript string.
+ */
+function stringToBlob(contentType, string) {
+  return { contentType: contentType,
+	   _stringData: string,
+	   numDataBytes: string.length*2 };
+}
+
+/**
+ * Constructs and returns a new Blob from a Java byte array (byte[]).
+ */
+function byteArrayToBlob(contentType, javaByteArray) {
+  return { contentType: contentType,
+	   _binaryData: javaByteArray,
+	   numDataBytes: javaByteArray.length };
+}
+
+/**
+ * Serves a Blob to the client, using the appropriate content-type,
+ * and stops execution of the current request.
+ */
+function serveBlob(blob) {
+  response.setContentType(blob.contentType);
+  if (blob._binaryData) {
+    response.writeBytes(new java.lang.String(blob._binaryData, 0));
+  }
+  else if (blob._stringData) {
+    response.write(blob._stringData);
+  }
+  response.stop();
+}