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# Colored stream handler for python logging framework based on: |
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# http://stackoverflow.com/questions/384076/how-can-i-color-python-logging-output/1336640#1336640 |
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# Copyright (c) 2014 Markus Pointner |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy |
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# of this software and associated documentation files (the "Software"), to deal |
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# in the Software without restriction, including without limitation the rights |
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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# copies of the Software, and to permit persons to whom the Software is |
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# furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included in |
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# all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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# THE SOFTWARE. |
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import logging |
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class _AnsiColorStreamHandler(logging.StreamHandler): |
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DEFAULT = '\x1b[0m' |
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RED = '\x1b[31m' |
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GREEN = '\x1b[32m' |
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YELLOW = '\x1b[33m' |
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CYAN = '\x1b[36m' |
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CRITICAL = RED |
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ERROR = RED |
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WARNING = YELLOW |
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INFO = GREEN |
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DEBUG = CYAN |
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@classmethod |
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def _get_color(cls, level): |
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if level >= logging.CRITICAL: return cls.CRITICAL |
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elif level >= logging.ERROR: return cls.ERROR |
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elif level >= logging.WARNING: return cls.WARNING |
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elif level >= logging.INFO: return cls.INFO |
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elif level >= logging.DEBUG: return cls.DEBUG |
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else: return cls.DEFAULT |
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def __init__(self, stream=None): |
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logging.StreamHandler.__init__(self, stream) |
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def format(self, record): |
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text = logging.StreamHandler.format(self, record) |
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color = self._get_color(record.levelno) |
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return color + text + self.DEFAULT |
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class _WinColorStreamHandler(logging.StreamHandler): |
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# wincon.h |
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FOREGROUND_BLACK = 0x0000 |
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FOREGROUND_BLUE = 0x0001 |
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FOREGROUND_GREEN = 0x0002 |
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FOREGROUND_CYAN = 0x0003 |
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FOREGROUND_RED = 0x0004 |
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FOREGROUND_MAGENTA = 0x0005 |
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FOREGROUND_YELLOW = 0x0006 |
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FOREGROUND_GREY = 0x0007 |
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FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified. |
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FOREGROUND_WHITE = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED |
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BACKGROUND_BLACK = 0x0000 |
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BACKGROUND_BLUE = 0x0010 |
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BACKGROUND_GREEN = 0x0020 |
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BACKGROUND_CYAN = 0x0030 |
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BACKGROUND_RED = 0x0040 |
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BACKGROUND_MAGENTA = 0x0050 |
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BACKGROUND_YELLOW = 0x0060 |
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BACKGROUND_GREY = 0x0070 |
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BACKGROUND_INTENSITY = 0x0080 # background color is intensified. |
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DEFAULT = FOREGROUND_WHITE |
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CRITICAL = BACKGROUND_YELLOW | FOREGROUND_RED | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY |
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ERROR = FOREGROUND_RED | FOREGROUND_INTENSITY |
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WARNING = FOREGROUND_YELLOW | FOREGROUND_INTENSITY |
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INFO = FOREGROUND_GREEN |
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DEBUG = FOREGROUND_CYAN |
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@classmethod |
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def _get_color(cls, level): |
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if level >= logging.CRITICAL: return cls.CRITICAL |
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elif level >= logging.ERROR: return cls.ERROR |
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elif level >= logging.WARNING: return cls.WARNING |
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elif level >= logging.INFO: return cls.INFO |
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elif level >= logging.DEBUG: return cls.DEBUG |
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else: return cls.DEFAULT |
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def _set_color(self, code): |
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import ctypes |
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ctypes.windll.kernel32.SetConsoleTextAttribute(self._outhdl, code) |
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def __init__(self, stream=None): |
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logging.StreamHandler.__init__(self, stream) |
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# get file handle for the stream |
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import ctypes, ctypes.util |
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crtname = ctypes.util.find_msvcrt() |
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crtlib = ctypes.cdll.LoadLibrary(crtname) |
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self._outhdl = crtlib._get_osfhandle(stream.fileno()) |
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def emit(self, record): |
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color = self._get_color(record.levelno) |
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self._set_color(color) |
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logging.StreamHandler.emit(self, record) |
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self._set_color(self.FOREGROUND_WHITE) |
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# select ColorStreamHandler based on platform |
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import platform |
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if platform.system() == 'Windows': |
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ColorStreamHandler = _WinColorStreamHandler |
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else: |
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ColorStreamHandler = _AnsiColorStreamHandler |
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