#!/usr/bin/python3

# The MIT License (MIT)
#
# Copyright © 2024 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 itertools import islice, chain
from subprocess import call
from sys import argv, exit, stderr, stdin, stdout


info = '''
xnargs [args...]


Similar to `xargs`, eXtra Null-separated ARGumentS takes such strings from
standard-input and uses them to extend the cmd/arg list given as cmd-line
arguments, running the resulting extended command.

This tool is a very convenient way to pass filepaths which may have any
allowed (null-bytes aren't allowed) symbol in them to another app/tool.
'''


if len(argv) < 2 or argv[1] in ('-h', '--h', '-help', '--help'):
    print(info.strip())
    exit(0)


try:
    # extras = stdin.buffer.read()
    # extras = extras.lstrip(b'\xef\xbb\xbf').rstrip(b'\x00')
    # extras = (str(e, encoding='utf-8') for e in extras.split(b'\x00'))
    extras = stdin.read()
    extras = extras.lstrip('\xef\xbb\xbf').rstrip('\x00')
    extras = (e for e in extras.split('\x00'))
    args = chain(islice(argv, 1, None), extras)
    exit(call(args, stdin=stdin, stdout=stdout, stderr=stderr))
except BrokenPipeError:
    stderr.close()
    exit(0)
except KeyboardInterrupt:
    stderr.close()
    exit(1)
except Exception as e:
    print(f'\x1b[31m{e}\x1b[0m', file=stderr)
    exit(1)