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builtin cd

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LuckyLaszlo
2021-12-09 04:19:27 +01:00
parent 34da9678dc
commit 73feaf0230
1 changed files with 60 additions and 15 deletions
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75
srcs/builtins/cd.c
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@@ -6,32 +6,77 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/12/04 19:31:19 by lperrey #+# #+# */
/* Updated: 2021/12/05 16:21:41 by lperrey ### ########.fr */
/* Updated: 2021/12/08 22:33:56 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
#define CMD "builtin_cd"
static int change_prompt(t_all *c);
static int change_env_pwd(void);
int builtin_cd(int argc, char *argv[], t_all *c)
{
char *dir;
if (argc > 2)
return (shell_error("cd: ", "too many arguments", "", EXIT_FAILURE));
else if (argc < 2 || ft_strncmp(argv[1], "~", 2) == 0)
{
dir = getenv("HOME");
if (!dir)
return (shell_error("cd: ", "HOME not set", "", EXIT_FAILURE));
}
else if (argc == 2)
dir = argv[1];
if (chdir(dir) == -1)
return (shell_perror("cd: ", dir, ": ", EXIT_FAILURE));
if (change_prompt(c) == -1)
return (ft_reti_perror(EXIT_FAILURE, CMD", change_prompt()"));
if (change_env_pwd() == -1)
return (ft_reti_perror(EXIT_FAILURE, CMD", change_env_pwd()"));
return (EXIT_SUCCESS);
}
static int change_prompt(t_all *c)
{
char *tmp;
if (argc == 2)
tmp = argv[1];
else if (argc < 2)
{
tmp = getenv("HOME");
if (!tmp)
return (shell_error("cd: ", "HOME not set", "", EXIT_FAILURE));
}
else if (argc > 2)
return (shell_error("cd: ", "too many arguments", "", EXIT_FAILURE));
if (chdir(tmp) == -1)
return (shell_perror("cd: ", tmp, ": ", EXIT_FAILURE));
tmp = init_prompt(c->prompt_base);
if (!tmp)
return (ft_reti_perror(EXIT_FAILURE, "builtin_cd, init_prompt()"));
return (-1);
free(c->prompt);
c->prompt = tmp;
return (EXIT_SUCCESS);
return (0);
}
static int change_env_pwd(void)
{
char *tmp;
int ret;
tmp = getenv("PWD");
if (tmp)
{
tmp = ft_strjoin("OLDPWD=", tmp);
if (!tmp)
return (-1);
ret = export_var(tmp);
free(tmp);
if (ret == -1)
return (-1);
}
tmp = getcwd(NULL, 0);
if (!tmp)
return (-1);
tmp = ft_strjoinfree_s2("PWD=", tmp);
if (!tmp)
return (-1);
ret = export_var(tmp);
free(tmp);
if (ret == -1)
return (-1);
return (0);
}