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lixian_cli_parser.py
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lixian_cli_parser.py
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def parse_command_line(args, keys=[], bools=[], alias={}, default={}, help=None):
options = {}
for k in keys:
options[k] = None
for k in bools:
options[k] = None
left = []
args = args[:]
while args:
x = args.pop(0)
if x == '--':
left.extend(args)
break
if x.startswith('-'):
k = x.lstrip('-')
if k in bools:
options[k] = True
elif k.startswith('no-') and k[3:] in bools:
options[k[3:]] = False
elif k in keys:
options[k] = args.pop(0)
elif '=' in k and k[:k.index('=')] in keys:
options[k[:k.index('=')]] = k[k.index('=')+1:]
elif k in alias:
k = alias[k]
if k in bools:
options[k] = True
else:
options[k] = args.pop(0)
else:
if help:
print 'Unknown option ' + x
print
print help
exit(1)
else:
raise RuntimeError('Unknown option '+x)
else:
left.append(x)
for k in default:
if options[k] is None:
options[k] = default[k]
class Args(object):
def __init__(self, args, left):
self.__dict__['_args'] = args
self.__dict__['_left'] = left
def __getattr__(self, k):
v = self._args.get(k, None)
if v:
return v
if '_' in k:
return self._args.get(k.replace('_', '-'), None)
def __setattr__(self, k, v):
self._args[k] = v
def __getitem__(self, i):
if type(i) == int:
return self._left[i]
else:
return self._args[i]
def __len__(self):
return len(self._left)
def __str__(self):
return '<Args%s%s>' % (self._args, self._left)
return Args(options, left)