Added --plain argument for machine cli interaction

src/cli.py

@@ -58,6 +58,12 @@ parser.add_argument(
 	help="Skip all questions.",
 	action="store_true")
 
+# Add the --plain flag
+parser.add_argument(
+	"--plain",
+	help="Print machine-friendly output.",
+	action="store_true")
+
 # Overwrite the default help message so we can use a uppercase S
 parser.add_argument(
 	"-h", "--help",

src/cli/add.py

@@ -69,7 +69,9 @@ if len(encodings) > 3:
 	print("NOTICE: Each additional model slows down the face recognition engine slightly")
 	print("Press Ctrl+C to cancel\n")
 
-print("Adding face model for the user " + user)
+# Make clear what we are doing if not human
+if not builtins.howdy_args.plain:
+	print("Adding face model for the user " + user)
 
 # Set the default label
 label = "Initial model"
@@ -83,12 +85,17 @@ if builtins.howdy_args.y:
 	print('Using default label "%s" because of -y flag' % (label, ))
 else:
 	# Ask the user for a custom label
-	label_in = input("Enter a label for this new model [" + label + "] (max 24 characters): ")
+	label_in = input("Enter a label for this new model [" + label + "]: ")
 
 	# Set the custom label (if any) and limit it to 24 characters
 	if label_in != "":
 		label = label_in[:24]
 
+# Remove illegal characters
+if "," in label:
+	print("NOTICE: Removing illegal character \",\" from model name")
+	label = label.replace(",", "")
+
 # Prepare the metadata for insertion
 insert_model = {
 	"time": int(time.time()),

src/cli/list.py

@@ -28,20 +28,31 @@ except FileNotFoundError:
 	print("\n\tsudo howdy -U " + user + " add\n")
 	sys.exit(1)
 
-# Print a header
-print("Known face models for " + user + ":")
-print("\n\t\033[1;29mID  Date                 Label\033[0m")
+# Print a header if we're not in plain mode
+if not builtins.howdy_args.plain:
+	print("Known face models for " + user + ":")
+	print("\n\033[1;29mID  Date                 Label\033[0m")
 
 # Loop through all encodings and print info about them
 for enc in encodings:
-	# Start with a tab and print the id
-	print("\t" + str(enc["id"]), end="")
-	# Print padding spaces after the id
+	# Start with the id
+	print(str(enc["id"]), end="")
+
+	# Add comma for machine reading
+	if builtins.howdy_args.plain:
+		print(",", end="")
+	# Print padding spaces after the id for a nice layout
+	else:
 		print((4 - len(str(enc["id"]))) * " ", end="")
+
 	# Format the time as ISO in the local timezone
 	print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(enc["time"])), end="")
+
+	# Seperate with commas again for machines, spaces otherwise
+	print("," if builtins.howdy_args.plain else "  ", end="")
+
 	# End with the label
-	print("  " + enc["label"])
+	print(enc["label"])
 
 # Add a closing enter
 print()

src/cli/remove.py

@@ -13,6 +13,8 @@ user = builtins.howdy_user
 # Check if enough arguments have been passed
 if builtins.howdy_args.argument is None:
 	print("Please add the ID of the model you want to remove as an argument")
+	print("For example:")
+	print("\n\thowdy remove 0\n")
 	print("You can find the IDs by running:")
 	print("\n\thowdy list\n")
 	sys.exit(1)
@@ -48,7 +50,7 @@ for enc in encodings:
 
 			# Abort if the answer isn't yes
 			if (ans.lower() != "y"):
-				print('\nInerpeting as a "NO"')
+				print('\nInterpreting as a "NO"')
 				sys.exit()
 
 			# Add a padding empty  line
@@ -61,7 +63,7 @@ for enc in encodings:
 # Abort if no matching id was found
 if not found:
 	print("No model with ID " + builtins.howdy_args.argument + " exists for " + user)
-	sys.exit()
+	sys.exit(1)
 
 # Remove the entire file if this encoding is the only one
 if len(encodings) == 1: