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"""
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CLI argument handling; common stuff: logging
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"""
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import optparse
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import logging
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def parser (parser) :
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"""
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Return an optparse.OptionGroup.
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"""
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general = optparse.OptionGroup(parser, "General options")
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general.add_option('-q', '--quiet', dest='loglevel', action='store_const', const=logging.ERROR, help="Less output")
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general.add_option('-v', '--verbose', dest='loglevel', action='store_const', const=logging.INFO, help="More output")
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general.add_option('-D', '--debug', dest='loglevel', action='store_const', const=logging.DEBUG, help="Even more output")
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general.add_option('--debug-module', action='append', metavar='MODULE',
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help="Enable logging for the given logger/module name")
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# defaults
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parser.set_defaults(
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logname = parser.prog,
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loglevel = logging.WARN,
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debug_module = [],
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)
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return general
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def apply (options, logname=None) :
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"""
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Apply the optparse options.
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"""
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if logname :
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prefix = options.logname + ': '
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else :
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prefix = ''
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# configure
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logging.basicConfig(
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# XXX: log Class.__init__ as Class, not __init__?
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format = prefix + '%(name)-20s: %(levelname)5s %(funcName)s: %(message)s',
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level = options.loglevel,
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)
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# enable debugging for specific targets
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for logger in options.debug_module :
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logging.getLogger(logger).setLevel(logging.DEBUG)
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