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annotate pyloader/invoke.py @ 4:5ce55f6c8964

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invokation works in the barest sense
author Jeff Hammel <jhammel@mozilla.com>
date Tue, 10 May 2011 19:00:57 -0700
parents 65d9a7c7ac63
children a825f00fe062
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6cb7696edc4d add some more stuff for string loady type things and rearrange structure
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1 import inspect
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2 import sys
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3 from cast import cast
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4 from cast import str2args
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6 def call(obj, *args, **kwargs):
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7 """call a thing with string arguments"""
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8 inspected = obj
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9 if inspect.isclass(obj):
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10 inspected = obj.__init__ # inspect the ctor
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11 try:
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12 argspec = inspect.getargspec(inspected)
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13 except TypeError:
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14 argspec = None
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15 if argspec is None:
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16 args = [cast(i) for i in args]
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17 kwargs = dict([(key, cast(value)) for key, value in kwargs.items()])
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18 else:
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19 # TODO: get values from argspec
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20 args = [cast(i) for i in args]
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21 kwargs = dict([(key, cast(value)) for key, value in kwargs.items()])
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22 return obj(*args, **kwargs)
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23
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24 def main(args=sys.argv[1:]):
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25 """CLI entry point"""
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26 from loader import load
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27 from optparse import OptionParser
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28 usage = '%prog Object arg1=value1 arg2=value2 [...]'
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29 description = 'invoke an Object given string arguments'
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30 parser = OptionParser(usage=usage, description=description)
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31 if not args:
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32 parser.print_usage()
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33 parser.exit()
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34 obj = load(args[0])
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35 obj_args, obj_kwargs = str2args(' '.join(args[1:]))
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36 print call(obj, *obj_args, **obj_kwargs)
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37
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38 if __name__ == '__main__':
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39 main()