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84 lines
2.9 KiB
84 lines
2.9 KiB
4 months ago
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# DExTer : Debugging Experience Tester
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# ~~~~~~ ~ ~~ ~ ~~
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""Provides Windows implementation of formatted/colored console output."""
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import sys
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import ctypes
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import ctypes.wintypes
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from ..PrettyOutputBase import PrettyOutputBase, Stream, _lock, _null_lock
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class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure):
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# pylint: disable=protected-access
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_fields_ = [('dwSize', ctypes.wintypes._COORD), ('dwCursorPosition',
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ctypes.wintypes._COORD),
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('wAttributes',
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ctypes.c_ushort), ('srWindow', ctypes.wintypes._SMALL_RECT),
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('dwMaximumWindowSize', ctypes.wintypes._COORD)]
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# pylint: enable=protected-access
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class PrettyOutput(PrettyOutputBase):
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stdout = Stream(sys.stdout, ctypes.windll.kernel32.GetStdHandle(-11))
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stderr = Stream(sys.stderr, ctypes.windll.kernel32.GetStdHandle(-12))
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def __enter__(self):
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info = _CONSOLE_SCREEN_BUFFER_INFO()
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for s in (PrettyOutput.stdout, PrettyOutput.stderr):
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ctypes.windll.kernel32.GetConsoleScreenBufferInfo(
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s.os, ctypes.byref(info))
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s.orig_color = info.wAttributes
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return self
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def __exit__(self, *args):
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self._restore_orig_color(PrettyOutput.stdout)
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self._restore_orig_color(PrettyOutput.stderr)
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def _restore_orig_color(self, stream, lock=_lock):
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if not stream.color_enabled:
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return
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with lock:
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stream = self._set_valid_stream(stream)
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self.flush(stream)
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if stream.orig_color:
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ctypes.windll.kernel32.SetConsoleTextAttribute(
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stream.os, stream.orig_color)
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def _color(self, text, color, stream, lock=_lock):
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stream = self._set_valid_stream(stream)
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with lock:
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try:
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if stream.color_enabled:
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ctypes.windll.kernel32.SetConsoleTextAttribute(
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stream.os, color)
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self._write(text, stream)
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finally:
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if stream.color_enabled:
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self._restore_orig_color(stream, lock=_null_lock)
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def red_impl(self, text, stream=None, **kwargs):
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self._color(text, 12, stream, **kwargs)
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def yellow_impl(self, text, stream=None, **kwargs):
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self._color(text, 14, stream, **kwargs)
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def green_impl(self, text, stream=None, **kwargs):
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self._color(text, 10, stream, **kwargs)
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def blue_impl(self, text, stream=None, **kwargs):
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self._color(text, 11, stream, **kwargs)
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def default_impl(self, text, stream=None, **kwargs):
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stream = self._set_valid_stream(stream)
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self._color(text, stream.orig_color, stream, **kwargs)
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