patches/app/gdata/export_with_file_handler.diff

diff -r 5bb001345813 app/gdata/docs/service.py
--- a/app/gdata/docs/service.py Sun Jul 17 21:10:30 2011 +0530
+++ b/app/gdata/docs/service.py Sun Jul 17 21:07:59 2011 +0300
@@ -106,6 +106,11 @@
         server=server, additional_headers=additional_headers, **kwargs)
     self.ssl = True
 
+    # Variables used to hack-in Export function to use it
+    # with a file handler instead of file path name.
+    self.file_handler = None
+    self.use_file_handler = False
+
   def _MakeKindCategory(self, label):
     if label is None:
       return None
@@ -183,10 +188,17 @@
       raise gdata.service.RequestError, {'status': server_response.status,
                                          'reason': server_response.reason,
                                          'body': response_body}
-    f = open(file_path, 'wb')
-    f.write(response_body)
-    f.flush()
-    f.close()
+
+    def writeResponseToFile(f, close=True):
+      f.write(response_body)
+      f.flush()
+      if close:
+        f.close()
+
+    if self.use_file_handler:
+        writeResponseToFile(self.file_handler, close=False)
+    else:
+        writeResponseToFile(open(file_path, 'wb'))
 
   def MoveIntoFolder(self, source_entry, folder_entry):
     """Moves a document into a folder in the Document List Feed.
@@ -346,7 +358,7 @@
 
     self._DownloadFile(url, file_path)
 
-  def Export(self, entry_or_id_or_url, file_path, gid=None, extra_params=None):
+  def Export(self, entry_or_id_or_url, file_path, gid=None, extra_params=None, file_handler=None):
     """Downloads a document from the Document List in a different format.
 
     Args:
@@ -361,6 +373,13 @@
     Raises:
       RequestError if the service does not respond with success
     """
+
+    if file_handler:
+      self.file_handler = file_handler
+      self.use_file_handler = True
+    else:
+      self.use_file_handler = False
+
     ext = None
     match = self.__FILE_EXT_PATTERN.match(file_path)
     if match: