mirror of
https://github.com/clinton-hall/nzbToMedia.git
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6bb4ae56bd
Dependencies: * backports.functools-lru-cache 1.2.1 * jaraco.classes 1.3 * jaraco.collections 1.3.2 * jaraco.functools 1.11 * jaraco.structures 1.0 * jaraco.text 1.7 * jaraco.ui 1.4 * jaraco.windows 3.6 * more-itertools 2.2 * path.py 8.2.1 * six 1.10.0
62 lines
1.4 KiB
Python
62 lines
1.4 KiB
Python
import argparse
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import six
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from jaraco.classes import meta
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from jaraco import text
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@six.add_metaclass(meta.LeafClassesMeta)
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class Command(object):
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"""
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A general-purpose base class for creating commands for a command-line
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program using argparse. Each subclass of Command represents a separate
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sub-command of a program.
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For example, one might use Command subclasses to implement the Mercurial
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command set::
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class Commit(Command):
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@staticmethod
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def add_arguments(cls, parser):
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parser.add_argument('-m', '--message')
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@classmethod
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def run(cls, args):
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"Run the 'commit' command with args (parsed)"
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class Merge(Command): pass
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class Pull(Command): pass
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...
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Then one could create an entry point for Mercurial like so::
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def hg_command():
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Command.invoke()
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"""
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@classmethod
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def add_subparsers(cls, parser):
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subparsers = parser.add_subparsers()
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[cmd_class.add_parser(subparsers) for cmd_class in cls._leaf_classes]
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@classmethod
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def add_parser(cls, subparsers):
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cmd_string = text.words(cls.__name__).lowered().dash_separated()
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parser = subparsers.add_parser(cmd_string)
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parser.set_defaults(action=cls)
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cls.add_arguments(parser)
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return parser
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@classmethod
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def add_arguments(cls, parser):
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pass
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@classmethod
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def invoke(cls):
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"""
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Invoke the command using ArgumentParser
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"""
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parser = argparse.ArgumentParser()
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cls.add_subparsers(parser)
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args = parser.parse_args()
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args.action.run(args)
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