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"""curses.wrapper
Contains one function, wrapper(), which runs another function which
should be the rest of your curses-based application. If the
application raises an exception, wrapper() will restore the terminal
to a sane state so you can read the resulting traceback.
"""
import sys, curses
def wrapper(func, *rest):
"""Wrapper function that initializes curses and calls another function,
restoring normal keyboard/screen behavior on error.
The callable object 'func' is then passed the main window 'stdscr'
as its first argument, followed by any other arguments passed to
wrapper().
"""
try:
# Initialize curses
stdscr=curses.initscr()
# Turn off echoing of keys, and enter cbreak mode,
# where no buffering is performed on keyboard input
curses.noecho() ; curses.cbreak()
# In keypad mode, escape sequences for special keys
# (like the cursor keys) will be interpreted and
# a special value like curses.KEY_LEFT will be returned
stdscr.keypad(1)
return apply(func, (stdscr,) + rest)
finally:
# Restore the terminal to a sane state on the way out.
stdscr.keypad(0)
curses.echo() ; curses.nocbreak()
curses.endwin()
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