133 lines
3.5 KiB
Python
133 lines
3.5 KiB
Python
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from __future__ import absolute_import
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import contextlib
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import logging
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import logging.handlers
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import os
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from pip._internal.compat import WINDOWS
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from pip._internal.utils.misc import ensure_dir
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try:
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import threading
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except ImportError:
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import dummy_threading as threading # type: ignore
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try:
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from pip._vendor import colorama
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# Lots of different errors can come from this, including SystemError and
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# ImportError.
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except Exception:
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colorama = None
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_log_state = threading.local()
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_log_state.indentation = 0
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@contextlib.contextmanager
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def indent_log(num=2):
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"""
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A context manager which will cause the log output to be indented for any
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log messages emitted inside it.
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"""
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_log_state.indentation += num
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try:
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yield
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finally:
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_log_state.indentation -= num
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def get_indentation():
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return getattr(_log_state, 'indentation', 0)
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class IndentingFormatter(logging.Formatter):
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def format(self, record):
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"""
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Calls the standard formatter, but will indent all of the log messages
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by our current indentation level.
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"""
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formatted = logging.Formatter.format(self, record)
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formatted = "".join([
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(" " * get_indentation()) + line
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for line in formatted.splitlines(True)
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])
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return formatted
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def _color_wrap(*colors):
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def wrapped(inp):
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return "".join(list(colors) + [inp, colorama.Style.RESET_ALL])
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return wrapped
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class ColorizedStreamHandler(logging.StreamHandler):
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# Don't build up a list of colors if we don't have colorama
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if colorama:
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COLORS = [
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# This needs to be in order from highest logging level to lowest.
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(logging.ERROR, _color_wrap(colorama.Fore.RED)),
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(logging.WARNING, _color_wrap(colorama.Fore.YELLOW)),
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]
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else:
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COLORS = []
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def __init__(self, stream=None, no_color=None):
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logging.StreamHandler.__init__(self, stream)
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self._no_color = no_color
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if WINDOWS and colorama:
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self.stream = colorama.AnsiToWin32(self.stream)
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def should_color(self):
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# Don't colorize things if we do not have colorama or if told not to
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if not colorama or self._no_color:
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return False
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real_stream = (
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self.stream if not isinstance(self.stream, colorama.AnsiToWin32)
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else self.stream.wrapped
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)
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# If the stream is a tty we should color it
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if hasattr(real_stream, "isatty") and real_stream.isatty():
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return True
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# If we have an ASNI term we should color it
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if os.environ.get("TERM") == "ANSI":
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return True
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# If anything else we should not color it
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return False
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def format(self, record):
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msg = logging.StreamHandler.format(self, record)
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if self.should_color():
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for level, color in self.COLORS:
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if record.levelno >= level:
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msg = color(msg)
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break
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return msg
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class BetterRotatingFileHandler(logging.handlers.RotatingFileHandler):
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def _open(self):
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ensure_dir(os.path.dirname(self.baseFilename))
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return logging.handlers.RotatingFileHandler._open(self)
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class MaxLevelFilter(logging.Filter):
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def __init__(self, level):
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self.level = level
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def filter(self, record):
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return record.levelno < self.level
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