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# -*- coding: utf-8 -*-
import os
import warnings
def get_display(display_name=None):
"""Parse X display name and return (hostname, display number, screen number)"""
if not display_name:
display_name = (os.getenv("DISPLAY", ":0.0")).encode("utf-8")
display_parts = display_name.split(b":")
hostname = display_parts[0].decode()
display, screen = 0, 0
if len(display_parts) > 1:
try:
display_screen = tuple(int(n) for n in display_parts[1].split(b"."))
except ValueError:
warnings.warn(
f"invalid value for display name: '{display_name.decode()}'",
Warning,
)
else:
display = display_screen[0]
if len(display_screen) > 1:
screen = display_screen[1]
else:
screen = 0
return hostname, display, screen
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