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builtin unset + fixed builtin export

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LuckyLaszlo
2021-12-05 18:15:23 +01:00
parent 66183ab441
commit b7b3cec6e0
6 changed files with 159 additions and 75 deletions
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55
srcs/builtins/unset.c
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@@ -1,24 +1,59 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* unset.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/12/05 17:05:05 by lperrey #+# #+# */
/* Updated: 2021/12/05 18:14:28 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static int unset_env_var(char *arg);
int builtin_unset(int argc, char *argv[], t_all *c)
{
int env_position;
int i;
int i;
int exit_value;
(void)argc;
(void)c;
exit_value = EXIT_SUCCESS;
i = 1;
while (argv[i])
{
env_position = ft_getenv_position(argv[i]);
free(environ[env_position]);
while (environ[env_position])
{
environ[env_position] = environ[env_position + 1];
env_position++;
}
if (unset_env_var(argv[i]) == EXIT_FAILURE)
exit_value = EXIT_FAILURE;
i++;
}
return (0);
return (exit_value);
}
static int unset_env_var(char *arg)
{
int env_position;
if (!ft_is_posix_name(arg))
{
shell_error("unset: ", arg, ": not a valid identifier", 0);
return (EXIT_FAILURE);
}
env_position = ft_getenv_position(arg);
free(environ[env_position]);
while (environ[env_position])
{
environ[env_position] = environ[env_position + 1];
env_position++;
}
return (EXIT_SUCCESS);
}
/*
environment variables must be POSIX NAME :
3.235 Name
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html
#tag_03_235
*/