added sync mode for local to swift, added delete function in utility, added script to remove all 0bytes directories, added script to delete large files without manifest

utility.py

@@ -234,6 +234,10 @@ def set_dash():
 
 
 def delete_object (swift_conn,swift_container,object,manifest,fail_tries):
+    errors_deleting_file = 0
+    errors_deleting_files_of_large_obj = 0
+    skipped_file = 0
+    skipped_files_of_large_obj = 0
     for fail_tries_counter in range (fail_tries) :
         try:
             print("Deleting " + swift_container + "/" + object)
@@ -254,9 +258,11 @@ def delete_object (swift_conn,swift_container,object,manifest,fail_tries):
                     except Exception as e:
                         print("Exception during deletion of manifest files")
                         print(e)
+                        errors_deleting_files_of_large_obj +=1
                         time.sleep(1)
                         if fail_tries_counter1 == fail_tries - 1 :
                             print("Maximum tries reached. Can't delete " + swift_container + "/" + object +" manifest files.Skipping")
+                            skipped_files_of_large_obj += 1
                         else:
                             swift_conn = authentication.set_authentication ()
                     else :
@@ -264,12 +270,26 @@ def delete_object (swift_conn,swift_container,object,manifest,fail_tries):
         except Exception as e:
             print("Exception during deletion of file")
             print(e)
+            errors_deleting_file += 1
             time.sleep(1)
             if fail_tries_counter == fail_tries - 1 :
                 print("Maximum tries reached. Can't delete " + swift_container + "/" + object +".Skipping")
+                skipped_file +=1
             else:
                 swift_conn = authentication.set_authentication ()
         else :
             break
-    return swift_conn
+    return [swift_conn,errors_deleting_file,errors_deleting_files_of_large_obj,skipped_file,skipped_files_of_large_obj]
+
+
+def list_compute_0_byte_folders (objects):
+
+    remotefiles = []
+
+    for o in objects :
+        if o["content_type"] == "application/directory" and int(o["bytes"]) == 0:
+            remotefiles.append(o["name"])
+
+    return remotefiles
+