src/builtins/exit.c

   1 /*
   2     psh/builtins/exit.c - builtin exit
   3     Copyright 2017 Zhang Maiyun.
   4
   5     This file is part of Psh, P shell.
   6
   7     Psh is free software: you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation, either version 3 of the License, or
  10     (at your option) any later version.
  11
  12     Psh is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include <stdlib.h>
  26
  27 #include "builtin.h"
  28 #include "psh.h"
  29 #include "util.h"
  30 #include "variable.h"
  31
  32 int builtin_exit(int argc, char **argv, psh_state *state)
  33 {
  34     if (argc < 2)
  35         exit_psh(state, psh_vf_getint(state, "?"));
  36     else
  37     {
  38         int i = (int)strtol(argv[1], NULL, 10);
  39         exit_psh(state, i);
  40     }
  41     return 1; /* Noreturn */
  42 }