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77 lines
2.3 KiB
Python
77 lines
2.3 KiB
Python
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#
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# logger.py - A simple logging helper class
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#
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# Copyright (C) 2010, Benjamin Drung <bdrung@debian.org>
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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import os
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import sys
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def escape_arg(arg):
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"""Shell-escpae arg, if necessary.
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Fairly simplistic, doesn't escape anything except whitespace.
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"""
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if ' ' not in arg:
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return arg
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return '"%s"' % arg.replace('\\', r'\\').replace('"', r'\"')
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class Logger(object):
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script_name = os.path.basename(sys.argv[0])
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verbose = False
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stdout = sys.stdout
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stderr = sys.stderr
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@classmethod
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def _print(cls, format_, message, args=None, stderr=False):
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if args:
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message = message % args
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stream = cls.stderr if stderr else cls.stdout
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stream.write((format_ + "\n") % (cls.script_name, message))
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@classmethod
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def command(cls, cmd):
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if cls.verbose:
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cls._print("%s: I: %s", " ".join(escape_arg(arg) for arg in cmd))
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@classmethod
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def debug(cls, message, *args):
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if cls.verbose:
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cls._print("%s: D: %s", message, args, stderr=True)
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@classmethod
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def error(cls, message, *args):
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cls._print("%s: Error: %s", message, args, stderr=True)
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@classmethod
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def warn(cls, message, *args):
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cls._print("%s: Warning: %s", message, args, stderr=True)
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@classmethod
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def info(cls, message, *args):
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if cls.verbose:
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cls._print("%s: I: %s", message, args)
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@classmethod
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def normal(cls, message, *args):
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cls._print("%s: %s", message, args)
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@classmethod
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def set_verbosity(cls, verbose):
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cls.verbose = verbose
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