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