ms_unset.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ms_unset.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dlana <dlana@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/03/11 16:18:24 by dlana             #+#    #+#             */
/*   Updated: 2022/03/14 16:07:25 by dlana            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

void	ms_cut_env_variable(t_data *data, int y)
{
	int		i;
	char	**tmp_arr;

	i = 0;
	data->num_env--;
	tmp_arr = data->our_env;
	ms_malloc_array(&data->our_env, data->num_env);
	while (i < y)
	{
		data->our_env[i] = ft_strdup(tmp_arr[i]);
		i++;
	}
	y++;
	while (i < data->num_env)
	{
		data->our_env[i] = ft_strdup(tmp_arr[y]);
		i++;
		y++;
	}
	data->our_env[i] = NULL;
	ms_free_arr(&tmp_arr);
}

void	ms_search_and_delete_env(t_data *data, int i_cmd, int y, int size_key)
{
	int	y_env;

	y_env = 0;
	while (y_env < data->num_env)
	{
		if (ft_strncmp(data->cmd[i_cmd].array_arg[y],
				data->our_env[y_env], size_key) == 0
			&& (data->our_env[y_env][size_key] == '='
			|| data->our_env[y_env][size_key] == '\0'))
		{
			if (ft_strncmp(data->cmd[i_cmd].array_arg[y],
					"OLDPWD=", 6) == 0)
				data->flag_old = 0;
			ms_cut_env_variable(data, y_env);
		}
		y_env++;
	}
}

int	ms_valid_unset(char *var)
{
	int	i;
	int	slash;

	i = 0;
	slash = 0;
	if (ft_isdigit(var[i]) == 1 || var[i] == '=')
		return (ERR_NUM_ONE);
	while (var[i] != '\0')
	{
		if (var[i] == 92)
			slash++;
		if ((ft_isalpha(var[i]) != 1 && ft_isdigit(var[i]) != 1
				&& var[i] != 95) || (var[i] == 92 && slash > 1))
			return (ERR_NUM_ONE);
		i++;
	}
	return (0);
}

int	ms_unset(t_data *data, int i_cmd)
{
	int	y;
	int	size_key;

	y = 0;
	size_key = 0;
	while (data->cmd[i_cmd].array_arg[y] != NULL)
	{
		if (ms_valid_unset(data->cmd[i_cmd].array_arg[y]) == 1)
		{
			data->num_error = ERR_NUM_ONE;
			return (ms_err_export(data->num_error,
					data->cmd[i_cmd].array_arg[y], "unset\0"));
		}
		size_key = ft_strlen(data->cmd[i_cmd].array_arg[y]);
		ms_search_and_delete_env(data, i_cmd, y, size_key);
		y++;
	}
	return (0);
}