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133 lines
3.4 KiB
Python
133 lines
3.4 KiB
Python
2 years ago
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import os
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import time
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from contextlib import contextmanager
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from typing import Callable, Optional
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_inited = False
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def _lazy_colorama_init():
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"""
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Lazily init colorama if necessary, not to screw up stdout if debugging is
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not enabled.
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This version of the function does nothing.
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"""
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try:
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if os.name == 'nt':
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# Does not work on Windows, as pyreadline and colorama interfere
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raise ImportError
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else:
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# Use colorama for nicer console output.
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from colorama import Fore, init # type: ignore[import]
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from colorama import initialise
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def _lazy_colorama_init(): # noqa: F811
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"""
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Lazily init colorama if necessary, not to screw up stdout is
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debug not enabled.
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This version of the function does init colorama.
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"""
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global _inited
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if not _inited:
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# pytest resets the stream at the end - causes troubles. Since
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# after every output the stream is reset automatically we don't
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# need this.
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initialise.atexit_done = True
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try:
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init(strip=False)
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except Exception:
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# Colorama fails with initializing under vim and is buggy in
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# version 0.3.6.
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pass
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_inited = True
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except ImportError:
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class Fore: # type: ignore[no-redef]
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RED = ''
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GREEN = ''
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YELLOW = ''
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MAGENTA = ''
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RESET = ''
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BLUE = ''
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NOTICE = object()
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WARNING = object()
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SPEED = object()
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enable_speed = False
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enable_warning = False
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enable_notice = False
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# callback, interface: level, str
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debug_function: Optional[Callable[[str, str], None]] = None
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_debug_indent = 0
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_start_time = time.time()
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def reset_time():
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global _start_time, _debug_indent
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_start_time = time.time()
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_debug_indent = 0
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def increase_indent(func):
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"""Decorator for makin """
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def wrapper(*args, **kwargs):
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with increase_indent_cm():
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return func(*args, **kwargs)
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return wrapper
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@contextmanager
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def increase_indent_cm(title=None, color='MAGENTA'):
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global _debug_indent
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if title:
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dbg('Start: ' + title, color=color)
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_debug_indent += 1
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try:
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yield
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finally:
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_debug_indent -= 1
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if title:
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dbg('End: ' + title, color=color)
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def dbg(message, *args, color='GREEN'):
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""" Looks at the stack, to see if a debug message should be printed. """
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assert color
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if debug_function and enable_notice:
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i = ' ' * _debug_indent
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_lazy_colorama_init()
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debug_function(color, i + 'dbg: ' + message % tuple(repr(a) for a in args))
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def warning(message, *args, format=True):
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if debug_function and enable_warning:
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i = ' ' * _debug_indent
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if format:
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message = message % tuple(repr(a) for a in args)
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debug_function('RED', i + 'warning: ' + message)
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def speed(name):
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if debug_function and enable_speed:
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now = time.time()
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i = ' ' * _debug_indent
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debug_function('YELLOW', i + 'speed: ' + '%s %s' % (name, now - _start_time))
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def print_to_stdout(color, str_out):
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"""
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The default debug function that prints to standard out.
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:param str color: A string that is an attribute of ``colorama.Fore``.
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"""
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col = getattr(Fore, color)
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_lazy_colorama_init()
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print(col + str_out + Fore.RESET)
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