Current File : //lib/python3/dist-packages/colorama/initialise.py
# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
import atexit
import contextlib
import sys
from .ansitowin32 import AnsiToWin32
def _wipe_internal_state_for_tests():
global orig_stdout, orig_stderr
orig_stdout = None
orig_stderr = None
global wrapped_stdout, wrapped_stderr
wrapped_stdout = None
wrapped_stderr = None
global atexit_done
atexit_done = False
global fixed_windows_console
fixed_windows_console = False
try:
# no-op if it wasn't registered
atexit.unregister(reset_all)
except AttributeError:
# python 2: no atexit.unregister. Oh well, we did our best.
pass
def reset_all():
if AnsiToWin32 is not None: # Issue #74: objects might become None at exit
AnsiToWin32(orig_stdout).reset_all()
def init(autoreset=False, convert=None, strip=None, wrap=True):
if not wrap and any([autoreset, convert, strip]):
raise ValueError('wrap=False conflicts with any other arg=True')
global wrapped_stdout, wrapped_stderr
global orig_stdout, orig_stderr
orig_stdout = sys.stdout
orig_stderr = sys.stderr
if sys.stdout is None:
wrapped_stdout = None
else:
sys.stdout = wrapped_stdout = \
wrap_stream(orig_stdout, convert, strip, autoreset, wrap)
if sys.stderr is None:
wrapped_stderr = None
else:
sys.stderr = wrapped_stderr = \
wrap_stream(orig_stderr, convert, strip, autoreset, wrap)
global atexit_done
if not atexit_done:
atexit.register(reset_all)
atexit_done = True
def deinit():
if orig_stdout is not None:
sys.stdout = orig_stdout
if orig_stderr is not None:
sys.stderr = orig_stderr
def just_fix_windows_console():
global fixed_windows_console
if sys.platform != "win32":
return
if fixed_windows_console:
return
if wrapped_stdout is not None or wrapped_stderr is not None:
# Someone already ran init() and it did stuff, so we won't second-guess them
return
# On newer versions of Windows, AnsiToWin32.__init__ will implicitly enable the
# native ANSI support in the console as a side-effect. We only need to actually
# replace sys.stdout/stderr if we're in the old-style conversion mode.
new_stdout = AnsiToWin32(sys.stdout, convert=None, strip=None, autoreset=False)
if new_stdout.convert:
sys.stdout = new_stdout
new_stderr = AnsiToWin32(sys.stderr, convert=None, strip=None, autoreset=False)
if new_stderr.convert:
sys.stderr = new_stderr
fixed_windows_console = True
@contextlib.contextmanager
def colorama_text(*args, **kwargs):
init(*args, **kwargs)
try:
yield
finally:
deinit()
def reinit():
if wrapped_stdout is not None:
sys.stdout = wrapped_stdout
if wrapped_stderr is not None:
sys.stderr = wrapped_stderr
def wrap_stream(stream, convert, strip, autoreset, wrap):
if wrap:
wrapper = AnsiToWin32(stream,
convert=convert, strip=strip, autoreset=autoreset)
if wrapper.should_wrap():
stream = wrapper.stream
return stream
# Use this for initial setup as well, to reduce code duplication
_wipe_internal_state_for_tests()
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