bytebeat_compiler.py: do not use sys.exit

bytebeat_compiler.py

@@ -8,7 +8,7 @@ from os import environ, makedirs, name as os_name
 from os.path import exists, join as path_join
 from shlex import join as command_line_join, split as command_line_split
 from shutil import which
-from sys import stdin, stdout, exit
+from sys import stdin, stdout
 from typing import Dict, Union
 import subprocess
 
@@ -71,8 +71,7 @@ def read_from_file_or_stdin(path: str) -> str:
 	elif exists(path):
 		return read_file(path)
 	else:
-		print("The specified file doesn't exist")
+		raise SystemExit(f"The specified file {path} doesn't exist")
-		raise SystemExit
 
 def substitute_vars(replacements: Dict[str, Union[bool, str]], text: str,
                     verbose: bool) -> str:
@@ -92,7 +91,7 @@ def substitute_vars(replacements: Dict[str, Union[bool, str]], text: str,
 def run_command(*command: list[str]) -> None:
 	print(command_line_join(command), flush=True)
 	if subprocess.run(command).returncode != EXIT_SUCCESS:
-		exit(EXIT_FAILURE)
+		raise SystemExit(EXIT_FAILURE)
 
 preprocessor_bool = lambda value: "1" if value else "0"
 C_str_repr = lambda s: '"' + s.replace("\\", "\\\\").replace(r'"', r'\"') + '"'
@@ -177,8 +176,7 @@ if __name__ == "__main__":
 	bytebeat_contents = read_from_file_or_stdin(args.file).strip()
 
 	if not bytebeat_contents:
-		print("No valid contents")
+		raise SystemExit("No valid contents")
-		raise SystemExit
 
 	# - Compilation
 	makedirs(PATHS["bin_dir"], exist_ok=True)
@@ -211,8 +209,7 @@ if __name__ == "__main__":
 		samples_specified = not no_samples
 
 		if seconds_specified and args.seconds < 0:
-			print("CLI: Count of seconds can't be less than zero.")
+			raise SystemExit("CLI: Count of seconds can't be less than zero.")
-			raise SystemExit
 
 		if no_seconds and samples_specified:
 			samples = args.samples
@@ -224,17 +221,14 @@ if __name__ == "__main__":
 			args.seconds = 30  # default
 			continue
 		else:
-			print("CLI: Incorrect seconds/samples length format.")
+			raise SystemExit("CLI: Incorrect seconds/samples length format.")
-			raise SystemExit
 		break
 
 	if samples <= 0:
-		print("CLI: Count of samples should be greater than zero.")
+		raise SystemExit("CLI: Count of samples should be greater than zero.")
-		raise SystemExit
 
 	if args.mode != "sequential" and args.mode != "instant":
-		print("Invalid mode '%s'" % args.mode)
+		raise SystemExit(f"Invalid mode '{args.mode}'")
-		raise SystemExit
 
 	gen_length = args.channels * samples
 
@@ -280,9 +274,9 @@ if __name__ == "__main__":
 				print()
 
 		if still_unavailable:
-			print("Could not find an available compiler. Please specify it by "
+			raise SystemExit("Could not find an available compiler. Please "
-			      "setting\nenvironmental variable CC.")
+			                 "specify it by setting\nenvironmental variable "
-			exit(2)
+			                 "CC.")
 
 	# Compile
 	print("Compiling")
@@ -296,5 +290,3 @@ if __name__ == "__main__":
 		"-I" + PATHS["include_directory"]
 	)
 	run_command(OUTPUT_FILE)
-
-	exit(EXIT_SUCCESS)