"""Call external commands."""
import curses
import logging
import subprocess
def open_external_program(command):
"""Call command as a subprocess, suspending curses rendering.
The caller has to refresh whatever windows it manages after calling this
method or garbage may be left on the screen.
Returns:
True if no exception occured.
"""
curses.nocbreak()
curses.echo()
curses.curs_set(1)
result = True
try:
subprocess.run(command)
except OSError as exc:
logging.error(f"Failed to run '{command}': {exc}")
result = False
curses.mousemask(curses.ALL_MOUSE_EVENTS)
curses.curs_set(0)
curses.noecho()
curses.cbreak()
return result
