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Edit File : wrapper.py \| Size : 1.64 KB
"""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 curses def wrapper(func, args, kwds): """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) # Start color, too. Harmless if the terminal doesn't have # color; user can test with has_color() later on. The try/catch # works around a minor bit of over-conscientiousness in the curses # module -- the error return from C start_color() is ignorable. try: curses.start_color() except: pass return func(stdscr, args, **kwds) finally: # Set everything back to normal if 'stdscr' in locals(): stdscr.keypad(0) curses.echo() curses.nocbreak() curses.endwin() Back

Edit File : wrapper.py | Size : 1.64 KB

"""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 curses

def wrapper(func, *args, **kwds):
    """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)

# Start color, too.  Harmless if the terminal doesn't have
        # color; user can test with has_color() later on.  The try/catch
        # works around a minor bit of over-conscientiousness in the curses
        # module -- the error return from C start_color() is ignorable.
        try:
            curses.start_color()
        except:
            pass

return func(stdscr, *args, **kwds)
    finally:
        # Set everything back to normal
        if 'stdscr' in locals():
            stdscr.keypad(0)
            curses.echo()
            curses.nocbreak()
            curses.endwin()

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