Created
May 25, 2012 15:00
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from docopt import docopt | |
import sys | |
class command(object): | |
registry = {} | |
short_docs = [] | |
def __init__(self, doc = None): | |
self.short_docs.append(doc) | |
def __call__(self, fn): | |
command.registry[fn.func_name] = fn | |
return fn | |
@classmethod | |
def dispatch(self, args=sys.argv[1:]): | |
func_name = len(args) and args[0] or None | |
if func_name is None or not func_name in command.registry: | |
sys.stderr.write("Available sub-commands:\n") | |
for fn, short_doc in zip(command.registry, command.short_docs): | |
sys.stderr.write("\t" + fn + ((" : " + short_doc) if short_doc else "") + "\n") | |
sys.exit(1) | |
else: | |
func = command.registry[func_name] | |
arguments = docopt(func.__doc__, args[1:]) | |
print arguments | |
func(**arguments) | |
@command("do the first thing") | |
def cmd_a(a, b, c, dnum=22): | |
""" | |
Usage t.py cmd_a [options] arguments | |
Options: | |
--dnum NUMBER number of things [default: 24] | |
Args: | |
a b c | |
""" | |
print dnum + 33 | |
print a, b, c, dnum | |
@command("do the other thing") | |
def cmd_b(a, b, other=None): | |
""" | |
Usage t.py cmd_b [options] arguments | |
Options: | |
--other something else | |
Args: | |
a b | |
""" | |
print a, b, other | |
if __name__ == '__main__': | |
command.dispatch() |
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