Re-format format-script for C++ sources.

#4

scripts/format.py

@@ -8,37 +8,32 @@
 
 DIRECTORIES = [
     os.path.join(
-        os.path.dirname(os.path.abspath(__file__)),
-        os.pardir,
-        "include"
+        os.path.dirname(os.path.abspath(__file__)), os.pardir, "include"
     ),
     os.path.join(
-        os.path.dirname(os.path.abspath(__file__)),
-        os.pardir,
-        "src",
-        "cpp"
-    )
+        os.path.dirname(os.path.abspath(__file__)), os.pardir, "src", "cpp"
+    ),
 ]
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     parser = argparse.ArgumentParser(
-        'format',
+        "format",
         description="""
 Format C++ sources using Clang-Format.
-        """
+        """,
     )
     parser.add_argument(
-        '--check',
-        '-C',
+        "--check",
+        "-C",
         help="Do not format files but check if formatting is needed and exit "
-             "with non-zero code if it is.",
-        action='store_true',
-        default=False
+        "with non-zero code if it is.",
+        action="store_true",
+        default=False,
     )
     parser.add_argument(
-        'files',
-        nargs='*',
+        "files",
+        nargs="*",
     )
     arguments = parser.parse_args()
     filepaths = []
@@ -62,22 +57,23 @@
                 sys.exit(result.returncode)
             with open(filepath) as file_handle:
                 actual_source = file_handle.read()
-            diff = '\n'.join(difflib.unified_diff(
-                result.stdout.decode().split('\n'),
-                actual_source.split('\n'),
-                'Formatted source',
-                f'Actual source ({filepath})',
-                lineterm=''
-            ))
+            diff = "\n".join(
+                difflib.unified_diff(
+                    result.stdout.decode().split("\n"),
+                    actual_source.split("\n"),
+                    "Formatted source",
+                    f"Actual source ({filepath})",
+                    lineterm="",
+                )
+            )
             if diff:
-                print('Fail')
+                print("Fail")
                 print(diff, file=sys.stderr, flush=True)
                 sys.exit(1)
-        print('Ok')
+        print("Ok")
         sys.exit(0)
     else:
         result = subprocess.run(
-            ["clang-format", "-i", "-style=file"] + filepaths,
-            env=os.environ
+            ["clang-format", "-i", "-style=file"] + filepaths, env=os.environ
         )
         sys.exit(result.returncode)