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terminal.py
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terminal.py
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# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
import os
def guess_background_color():
"""Returns one of "dark", "light", or "unknown".
This is basically just guessing, but better than always guessing "dark"!
See also https://stackoverflow.com/questions/2507337/ and
https://unix.stackexchange.com/questions/245378/
"""
django_colors = os.getenv("DJANGO_COLORS", "")
for theme in ("light", "dark"):
if theme in django_colors.split(";"):
return theme
# Guessing based on the $COLORFGBG environment variable
try:
fg, *_, bg = os.getenv("COLORFGBG").split(";")
except Exception:
pass
else:
# 0=black, 7=light-grey, 15=white ; we don't interpret other colors
if fg in ("7", "15") and bg == "0":
return "dark"
elif fg == "0" and bg in ("7", "15"):
return "light"
# TODO: Guessing based on the xterm control sequence
return "unknown"