def create_argparser(meta_args):
parser = ArgumentParser(description='ArgumentParser created from meta-CLI')
kwargs = {k: v for k, v in vars(meta_args).items() if v != EMPTY}
argname = kwargs.pop('argname')
argform = kwargs.pop('argform')
if 'action' in kwargs:
kwargs['action'] = kwargs['action'].value
adder = getattr(parser, 'add_%s' % argform.name.lower())
print('# %s %r' % (adder.__name__, kwargs))
adder(argname, **kwargs)
return parser
def _parse(self, arg_type, *args, cli_args=None, **kwargs):
ap = AP()
add_func = getattr(ap, 'add_' + arg_type)
add_func(*args, **kwargs)
if cli_args is not None:
return ap.parse_args(cli_args.split())
def get_meta_args():
parser = ArgumentParser(description=CALLER_DOC, argument_default=EMPTY)
parser.add_positional('argform', type=ArgForm)
parser.add_positional('argname')
parser.add_optional('nargs', type=nargs_type)
parser.add_optional('default', type='literal')
parser.add_optional('type', type=lambda s: getattr(builtins, s, s))
parser.add_optional('arghelp', dest='help', help='the "help" param')
parser.add_optional('metavar')
parser.add_optional('dest')
parser.add_optional('action', type=Action)
parser.add_optional('const', type='literal')
parser.add_flag('required')
parser.add_flag('strict-default')
args, rest = parser.parse_known_args()
if rest and rest[0] == '--':
rest = rest[1:]
return args, rest
"""
Print data stored in a pickle file (optionally compressed).
This simple script demonstrating `pickled_data` arg type.
"""
from apegears import ArgumentParser, CALLER_DOC
if __name__ == '__main__':
parser = ArgumentParser(description=CALLER_DOC)
parser.add_positional('data', type='pickled_data')
args = parser.parse_args()
print(args.data)
"""
Print a sequence of numbers.
This is a simple ``seq`` script, demonstrating range arg type.
"""
from apegears import ArgumentParser, CALLER_DOC
if __name__ == '__main__':
parser = ArgumentParser(description=CALLER_DOC)
parser.add_positional('seq', type=range)
args = parser.parse_args()
for i in args.seq:
print(i)
"""
cat - concatenate files and print on the standard output.
This is a simple ``cat`` script, demonstrating fileinput arg type.
"""
from apegears import ArgumentParser, fileinput, CALLER_DOC
if __name__ == '__main__':
parser = ArgumentParser(description=CALLER_DOC)
parser.add_positional(type=fileinput(decompress=True), nargs='*')
args = parser.parse_args()
for line in args.infiles:
print(line, end='')
"""
Copy a file.
This is a simple ``copy`` script, demonstrating FileTypes.
"""
from apegears import ArgumentParser, FileType, CALLER_DOC
if __name__ == '__main__':
parser = ArgumentParser(description=CALLER_DOC)
parser.add_positional('src', type=FileType('rb'))
parser.add_positional('dest', type=FileType('wb'))
args = parser.parse_args()
# read:
contents = args.src.read()
# write:
# NOTE: dest file is only created when writing to it (which is the point of this example):
args.dest.write(contents)