debian/changelog

+ocrizer (1.0.1) jessie; urgency=medium
+
+  * ocrizer.py: create the class OcrizerException to report exceptions
+    to users
+  * ocrizer.py: report to the user when no device is found to avoid him
+    to wait indefinitely
+  * When no scanner is found a simpler error is now reported to the
+    user, we report now "Couldn't find an obvious scanner device"
+
+ -- Alex ARNAUD <alexarnaud@hypra.fr>  Thu, 09 May 2019 16:19:33 +0200
+
 ocrizer (1.0.0) jessie; urgency=medium
 
   [ Colomban Wendling ]

usr/lib/python3/dist-packages/ocrize/ocrize.py

@@ -175,12 +175,12 @@ class OCRizer():
                     try:
                         chosen_dev = devices[0]
                     except IndexError as e:
-                        e = Exception(_("Couldn't find any scanner device"))
+                        e = OcrizerException(_("Couldn't find any scanner device"))
                         e.notification_message = _("Couldn't find any scanner device")
                         raise e
                 else:
-                    e = Exception(_("Couldn't find an obvious scanner device"))
-                    e.notification_message = _("Couldn't find an obvious scanner device")
+                    e = OcrizerException(_("Couldn't find any scanner device"))
+                    e.notification_message = _("Couldn't find any scanner device")
                     raise e
 
         return chosen_dev
@@ -369,6 +369,9 @@ class OCRizer():
             self.move_files_to_destination()
             self.remove_tmp_files()
             self.launch_libreoffice()
+        except OcrizerException as e:
+            self.send_notification(e.notification_message)
+            sys.exit(1)
         except Exception as e:
             traceback.print_exc()
             self.logger.critical(e)
@@ -430,7 +433,8 @@ def parse_args(argv=None):
     args.ocr_engine_class = OCREngines_available[args.ocr_engine] # pass the class inside the args
     return args
 
-
+class OcrizerException(Exception):
+    pass
 
 def start(argv=None):
     es = gettext.translation('ocrizer', fallback=True)