42_minishell/builtins/exit.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   exit.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: erey-bet <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/24 10:17:59 by erey-bet          #+#    #+#             */
/*   Updated: 2023/03/09 20:08:56 by erey-bet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "./builtins_private.h"

static int	error(int err, char *reason, char *problem)
{
	ft_putstr_fd("minishell: exit ", 2);
	if (problem != NULL)
	{
		ft_putstr_fd(problem, 2);
		write(2, ": ", 3);
	}
	ft_putstr_fd(reason, 2);
	return (err);
}

int	ft_exit(char **args)
{
	int	err;

	if (args[0] == NULL)
		return (0);
	err = ft_atoi_check(args[0]);
	if (err == 1)
		return (error(err, "numeric argument required", args[0]));
	if (args[1] != NULL)
		return (error(1, "too many arguments", NULL));
	if (err > 0)
		return (error(err, "numeric argument required", args[0]));
	return ((ft_atoi(args[0]) % 256 + 256) % 256);
}