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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

log.py (1969B)

    

  1. """A simple log mechanism styled after PEP 282."""
  3. # The class here is styled after PEP 282 so that it could later be
  4. # replaced with a standard Python logging implementation.
  6. DEBUG = 1
  7. INFO = 2
  8. WARN = 3
  9. ERROR = 4
  10. FATAL = 5
  12. import sys
  14. class Log:
  16.     def __init__(self, threshold=WARN):
  17.         self.threshold = threshold
  19.     def _log(self, level, msg, args):
  20.         if level not in (DEBUG, INFO, WARN, ERROR, FATAL):
  21.             raise ValueError('%s wrong log level' % str(level))
  23.         if level >= self.threshold:
  24.             if args:
  25.                 msg = msg % args
  26.             if level in (WARN, ERROR, FATAL):
  27.                 stream = sys.stderr
  28.             else:
  29.                 stream = sys.stdout
  30.             try:
  31.                 stream.write('%s\n' % msg)
  32.             except UnicodeEncodeError:
  33.                 # emulate backslashreplace error handler
  34.                 encoding = stream.encoding
  35.                 msg = msg.encode(encoding, "backslashreplace").decode(encoding)
  36.                 stream.write('%s\n' % msg)
  37.             stream.flush()
  39.     def log(self, level, msg, *args):
  40.         self._log(level, msg, args)
  42.     def debug(self, msg, *args):
  43.         self._log(DEBUG, msg, args)
  45.     def info(self, msg, *args):
  46.         self._log(INFO, msg, args)
  48.     def warn(self, msg, *args):
  49.         self._log(WARN, msg, args)
  51.     def error(self, msg, *args):
  52.         self._log(ERROR, msg, args)
  54.     def fatal(self, msg, *args):
  55.         self._log(FATAL, msg, args)
  57. _global_log = Log()
  58. log = _global_log.log
  59. debug = _global_log.debug
  60. info = _global_log.info
  61. warn = _global_log.warn
  62. error = _global_log.error
  63. fatal = _global_log.fatal
  65. def set_threshold(level):
  66.     # return the old threshold for use from tests
  67.     old = _global_log.threshold
  68.     _global_log.threshold = level
  69.     return old
  71. def set_verbosity(v):
  72.     if v <= 0:
  73.         set_threshold(WARN)
  74.     elif v == 1:
  75.         set_threshold(INFO)
  76.     elif v >= 2:
  77.         set_threshold(DEBUG)