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cd.c
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/* ************************************************************************** */
/* */
/* :::::::: */
/* cd.c :+: :+: */
/* +:+ */
/* By: sde-rijk <[email protected]> +#+ */
/* +#+ */
/* Created: 2021/12/13 10:17:01 by sde-rijk #+# #+# */
/* Updated: 2022/01/24 13:49:34 by sde-rijk ######## odam.nl */
/* */
/* ************************************************************************** */
#include "minishell.h"
#include "Libft/libft.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef __APPLE__
# include <sys/syslimits.h>
#else
# include <linux/limits.h>
#endif
static int ft_relative(char *path_str, char *cur_dir, \
t_part *parts, t_env *s_env);
static void ft_set_pwds(char *old_dir, t_env *s_env);
static int ft_cd_home(t_env *s_env, t_part *parts);
static int ft_cd_oldpwd(t_env *s_env, t_part *parts);
int ft_cd(t_part *parts, t_env *s_env)
{
char *old_dir;
int err;
char buf[PATH_MAX];
err = 0;
old_dir = getcwd(buf, PATH_MAX);
if (!parts[1].part)
err = ft_cd_home(s_env, parts);
else if (!ft_strcmp(parts[1].part, "-"))
err = ft_cd_oldpwd(s_env, parts);
else if (parts[1].part[0] == '/')
{
if (chdir(parts[1].part))
err = ft_redir_error("cd", parts[1].part, s_env);
}
else
err = ft_relative(parts[1].part, old_dir, parts, s_env);
if (err == 0)
ft_set_pwds(old_dir, s_env);
return (err);
}
static int ft_cd_oldpwd(t_env *s_env, t_part *parts)
{
char *old_pwd;
old_pwd = ft_search_name(s_env, "OLDPWD", 6);
if (!old_pwd)
return (ft_home_not_set(parts, 0, s_env, "OLDPWD"));
if (chdir(old_pwd) < 0)
return (1);
ft_pwd(s_env);
return (0);
}
static int ft_cd_home(t_env *s_env, t_part *parts)
{
char *home_dir;
home_dir = ft_search_name(s_env, "HOME", 4);
if (!home_dir)
return (ft_home_not_set(parts, 0, s_env, "HOME"));
if (chdir(home_dir) < 0)
return (1);
return (0);
}
static void ft_set_pwds(char *old_dir, t_env *s_env)
{
char *old_dir_env;
char *cur_dir;
char *cur_dir_env;
char buf[PATH_MAX];
old_dir_env = ft_strjoin("OLDPWD=", old_dir);
ft_export_var(s_env, old_dir_env, "OLDPWD");
free(old_dir_env);
cur_dir = getcwd(buf, PATH_MAX);
cur_dir_env = ft_strjoin("PWD=", cur_dir);
ft_export_var(s_env, cur_dir_env, "PWD");
free(cur_dir_env);
}
static int ft_relative(char *path_str, char *cur_dir, \
t_part *parts, t_env *s_env)
{
char *home_dir;
char *new_dir;
int err;
err = 0;
home_dir = ft_strjoin(cur_dir, "/");
new_dir = ft_strjoin(home_dir, path_str);
if (chdir(new_dir) < 0)
err = ft_redir_error("cd", parts[1].part, s_env);
free(home_dir);
free(new_dir);
return (err);
}