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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* builtins_part_one.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: chuhlig <chuhlig@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/08/09 17:01:16 by chuhlig #+# #+# */
/* Updated: 2025/01/18 18:33:33 by chuhlig ### ########.fr */
/* */
/* ************************************************************************** */
#include "env.h"
#include <stdio.h>
int unset(char **av, t_env **env)
{
t_env *current;
t_env *prev;
int i;
i = 0;
while (av[++i])
{
current = *env;
prev = NULL;
while (current)
{
if (ft_strcmp(current->name, av[i]) == 0)
{
if (prev)
prev->next = current->next;
else
*env = current->next;
free_env_node(current);
break ;
}
prev = current;
current = current->next;
}
}
return (0);
}
t_env *check_existing(t_env *env, char *av)
{
while (env)
{
if (ft_strcmp("$", av) == 0)
return (NULL);
if (ft_strcmp(env->name, av) == 0)
return (env);
env = env->next;
}
return (NULL);
}
void export_export(char *av, t_env **env)
{
char *tmp;
t_env *current;
current = NULL;
tmp = ft_strchr(av, '=');
*tmp = '\0';
current = check_existing(*env, av);
if (current)
free(current->value);
else
{
current = env_new(ft_strdup(av));
current->next = *env;
*env = current;
}
current->value = ft_strdup(tmp + 1);
}
int is_valid_identifier(char *str)
{
int i;
i = 0;
if (!ft_isalpha(str[0]) && str[0] != '_')
return (0);
while (str[i] && str[i] != '=')
{
if (!ft_isalnum(str[i]) && str[i] != '_')
return (0);
i++;
}
return (1);
}
int export(char **av, t_env **env)
{
char *equal_sign;
int i;
i = 0;
while (av[++i])
{
equal_sign = ft_strchr(av[i], '=');
if (equal_sign)
*equal_sign = '\0';
if (!is_valid_identifier(av[i]))
{
write(1, "Minishell $ export: not a valid identifier\n", 43);
if (equal_sign)
*equal_sign = '=';
continue ;
}
if (equal_sign)
{
*equal_sign = '=';
export_export(av[i], env);
}
}
return (0);
}
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