class Command(object):
'''Base class for Command objects.'''
def __init__(self, options=None):
if options is None:
options = []
self.options = options
# Override the following
# __doc__ = ...
usage_args = '[ options ... ]'
@classproperty
def name(cls):
return cls.__name__
@classproperty
def description(cls):
return re.sub('\s+', ' ', cls.__doc__)
def execute(self, config, cmd_args):
options, pos_args = self._parse_args(cmd_args)
try:
return self._run(config, options, pos_args)
except InvalidCommandLine:
self.parser.print_help()
return 1
def _parse_args(self, args):
self.parser = BPTOptionParser(
usage='%%prog %s %s' % (self.name, self.usage_args),
description=self.description)
self.parser.add_options(self.options)
return self.parser.parse_args(args)
def _require_args(self, cmd_args, at_least=0, at_most=None):
l = len(cmd_args)
if l < at_least:
raise InvalidCommandLine
if at_most is not None and l > at_most:
raise InvalidCommandLine
def _run(self, config, options, pos_args):
raise NotImplementedError
class Command(object):
'''Base class for Command objects.'''
def __init__(self, options=None):
if options is None:
options = []
self.options = options
# Override the following
# __doc__ = ...
usage_args = '[ options ... ]'
@classproperty
def name(cls):
return cls.__name__
@classproperty
def description(cls):
return re.sub('\s+', ' ', cls.__doc__)
def execute(self, config, cmd_args):
options, pos_args = self._parse_args(cmd_args)
try:
return self._run(config, options, pos_args)
except InvalidCommandLine:
self.parser.print_help()
return 1
def _parse_args(self, args):
self.parser = BPTOptionParser(usage='%%prog %s %s' %
(self.name, self.usage_args),
description=self.description)
self.parser.add_options(self.options)
return self.parser.parse_args(args)
def _require_args(self, cmd_args, at_least=0, at_most=None):
l = len(cmd_args)
if l < at_least:
raise InvalidCommandLine
if at_most is not None and l > at_most:
raise InvalidCommandLine
def _run(self, config, options, pos_args):
raise NotImplementedError
