def create_options(
*,
input_file: os.PathLike,
output_file: os.PathLike,
parser: ArgumentParser,
**kwargs,
):
cmdline = []
deferred = []
for arg, val in kwargs.items():
if val is None:
continue
# These arguments with special handling for which we bypass
# argparse
if arg in {'progress_bar', 'plugins'}:
deferred.append((arg, val))
continue
cmd_style_arg = arg.replace('_', '-')
# Booleans are special: add only if True, omit for False
if isinstance(val, bool):
if val:
cmdline.append(f"--{cmd_style_arg}")
continue
if isinstance(val, Iterable) and not isinstance(val, str):
for elem in val:
cmdline.append(f"--{cmd_style_arg}")
cmdline.append(elem)
continue
# We have a parameter
cmdline.append(f"--{cmd_style_arg}")
if isinstance(val, (int, float)):
cmdline.append(str(val))
elif isinstance(val, str):
cmdline.append(val)
elif isinstance(val, Path):
cmdline.append(str(val))
else:
raise TypeError(f"{arg}: {val} ({type(val)})")
cmdline.append(str(input_file))
cmdline.append(str(output_file))
parser._api_mode = True
options = parser.parse_args(cmdline)
for keyword, val in deferred:
setattr(options, keyword, val)
return options
