#!/usr/bin/python

# The MIT License (MIT)
#
# Copyright (c) 2026 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


from curses import (
    cbreak, curs_set, endwin, initscr, noecho, resetty, savetty, set_escdelay,
)
from itertools import islice
from os import dup2
from sys import argv, exit, stderr


info = '''
echoff [words...]

Emit words using the command-line arguments given (like `echo` does) on an
alternate screen (off the regular screen). You can quit by pressing (almost)
any key on your keyboard, or even force-quit it via Control + C.
'''


# leave default/original stdin alone, so this tool can be called with
# the likes of `xargs` (for example), and still wait for keyboard input
# dup2(0, 3)
with open('/dev/tty', 'rb') as inp:
    dup2(inp.fileno(), 0)

screen = initscr()
savetty()
noecho()
cbreak()
screen.keypad(True)
curs_set(0)
set_escdelay(10)

err = None
res = 0

try:
    try:
        pos = 0
        for s in islice(argv, 1, None):
            if pos > 0:
                screen.addstr(0, pos, ' ')
                pos += 1
            screen.addstr(0, pos, s)
            pos += len(s)
    except KeyboardInterrupt as e:
        # only handle Control + C, just in case loop is very slow
        raise e
    except Exception:
        # just quit the loop, ignoring any out-of-screen display errors
        pass

    screen.getkey()
except KeyboardInterrupt:
    res = 1
except Exception as e:
    err = e
    res = 1

try:
    resetty()
except:
    pass
try:
    endwin()
except:
    pass
if err:
    print(str(e), file=stderr)
exit(res)