Code review: 6879043: Adding a default help message to psort and plas…

…o_information if no options supplied.

frontend/log2timeline.py

@@ -130,20 +130,20 @@
 
   options.recursive = os.path.isdir(options.filename)
 
+  format_str = '[%(levelname)s] (%(processName)-10s) %(message)s'
+  if options.debug:
+    logging.basicConfig(level=logging.DEBUG, format=format_str)
+  else:
+    logging.basicConfig(level=logging.INFO, format=format_str)
+
   if not options.output:
-    print 'Wrong usage: need to define an output.'
     arg_parser.print_help()
+    logging.error('Wrong usage: need to define an output.')
     sys.exit(1)
 
   if options.image_offset or options.image_offset_bytes:
     options.image = True
 
-  format_str = '[%(levelname)s] (%(processName)-10s) %(message)s'
-  if options.debug:
-    logging.basicConfig(level=logging.DEBUG, format=format_str)
-  else:
-    logging.basicConfig(level=logging.INFO, format=format_str)
-
   if options.image:
     options.preprocess = True
 

frontend/plaso_information.py

@@ -114,6 +114,7 @@ def DisplayInformation(info, params):
   options = arg_parser.parse_args()
 
   if not options.storage_file:
+    arg_parser.print_help()
     logging.error('Not able to run without a storage file being indicated.')
     sys.exit(1)
 

frontend/psort.py

@@ -352,7 +352,8 @@ def End(self):
     sys.exit(0)
 
   if not my_args.protofile:
-    print '-s STORAGEFILE required! or -h for HELP'
+    parser.print_help()
+    logging.error('-s STORAGEFILE required! or -h for HELP')
     sys.exit(0)
 
   first, last = GetTimes(my_args)