ls finish, need more test

compile_flags.txt

@@ -7,3 +7,5 @@
 -iquoteinc
 -iquotelib
 -g
+-D_POSIX_C_SOURCE=200809L
+-D_DEFAULT_SOURCE

inc/main.h

@@ -1,6 +1,13 @@
 #pragma once
 
-#include <inttypes.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+#include <time.h>
+#include <sys/ioctl.h>
 
 typedef struct {
         bool l;
@@ -8,8 +15,43 @@ typedef struct {
         bool R;
         bool r;
         bool t;
+        bool dashdash;
         int error[2];
 } flags_t;
 
-flags_t get_flags(char **argv);
+typedef struct {
-void display_flags(flags_t flags);
+    DIR *dir;
+    char *path;
+    char *name;
+    bool is_file;
+    struct stat stat;
+    struct stat lstat;
+    struct passwd *psswd;
+    struct group *grp;
+} dir_t;
+
+extern flags_t flags; 
+extern struct winsize win;
+
+// Parsing
+void get_flags(char **argv);
+void parsing(char **argv, t_list ***files, t_list ***dirs, i32 *max_size, i32 *len, i32 *error);
+dir_t *get_directory_files(char *path);
+
+// Display
+void display_name(dir_t *dir);
+void display_file(dir_t *dir, i32 max_size);
+i32 display_files(t_list **files);
+void display_directory(dir_t *dir);
+i32 display_files_stat(t_list **files);
+void display_single_stat(dir_t *dir, i32 max_size);
+void space_between_files(t_list **files, dir_t *file);
+
+// Directory
+void strmode(mode_t mode, char *buf);
+void delete_directory(void *content);
+t_list **get_all_in(dir_t *dir);
+void add_sort(t_list **head, dir_t *new_dir, bool file_priority);
+
+// Free
+void free_files(t_list **files);

lib/ft_printf/ft_printf.c

@@ -69,7 +69,7 @@ u32 ft_printf(const char *str, ...)
 {
 	va_list	args;
 	va_start(args, str);
-    u32 count = ft_vdprintf(0, str, args);
+    u32 count = ft_vdprintf(1, str, args);
 	va_end(args);
     return count;
 }

lib/libft/ft_lstremove_back.c

@@ -0,0 +1,25 @@
+
+#include "libft.h"
+
+static void	delete(t_list **deleted, void (*del)(void*));
+
+void	ft_lstremove_back(t_list **lst, void (*del)(void*))
+{
+    if (lst == nullptr || del == nullptr)
+        return;
+
+    if ((*lst)->next == nullptr)
+        return delete(lst, del);
+
+    t_list *cur = *lst;
+    while (cur->next != nullptr && cur->next->next != nullptr)
+        cur = cur->next;
+
+    delete(&(cur->next), del);
+}
+
+static void	delete(t_list **deleted, void (*del)(void*)) {
+    del(*deleted);
+    free(*deleted);
+    *deleted = nullptr;
+}

lib/libft/ft_lstremove_front.c

@@ -0,0 +1,13 @@
+
+#include "libft.h"
+
+void	ft_lstremove_front(t_list **lst, void (*del)(void*))
+{
+    if (lst == nullptr || del == nullptr)
+        return;
+
+    t_list *next = (*lst)->next;
+    del(*lst);
+    free(*lst);
+    *lst = next;
+}

lib/libft/ft_putnbr_fd.c

@@ -17,8 +17,8 @@ u32	ft_putnbr_fd(i64 n, int fd)
 	if (n < 0)
 		ft_putchar_fd('-', fd);
     n = ABS(n);
-	int len = ft_get_size(n) + 1;
+	int len = ft_get_size(n);
-	while (--len > 1)
+	while (--len > 0)
 		ft_putchar_fd(n / ft_power(10, len) % 10 + 48, fd);
 	ft_putchar_fd(n % 10 + 48, fd);
     return ft_get_size(n);

lib/libft/ft_strcat.c

@@ -0,0 +1,6 @@
+#include "libft.h"
+
+char *ft_strcat(char *dest, const char *src) {
+    ft_strcpy(dest + ft_strlen(dest), src);
+    return dest;
+}

lib/libft/ft_strcmp.c

@@ -0,0 +1,7 @@
+i32	ft_strcmp(const char *s1, const char *s2) {
+    i32 i = 0;
+    for (; s1[i] != '\0' && s2[i] != '\0'; i++)
+        if (s1[i] != s2[i])
+            return s1[i] - s2[i];
+    return s1[i] - s2[i];
+}

lib/libft/ft_strcpy.c

@@ -0,0 +1,11 @@
+#include "libft.h"
+
+char *ft_strcpy(char *dest, const char *src) {
+    while (*src) {
+        char c = *src++;
+        *dest++ = c;
+        if (c == '\0')
+            return dest;
+    }
+    return dest;
+}

lib/libft/ft_strlcat.c

@@ -14,8 +14,7 @@
 
 size_t	ft_strlcat(char *dest, const char *src, size_t size)
 {
-	size_t	len_dest;
+	size_t	len_dest, len_src;
-	size_t	len_src;
 
 	if (size == 0)
 		return (ft_strlen(src));

lib/libft/ft_strlcats.c

@@ -0,0 +1,19 @@
+#include "libft.h"
+
+char 	*ft_strlcats(u32 nbr_str, ...) {
+    va_list args;
+    u32 len = 0;
+
+    va_start(args, nbr_str);
+    for (u32 i = 0; i < nbr_str; i++)
+        len += ft_strlen(va_arg(args, char *));
+    va_end(args);
+
+    va_start(args, nbr_str);
+    char *new_str = ft_calloc(len + 1, sizeof(char));
+    for (u32 i = 0; i < nbr_str; i++)
+        ft_strcat(new_str, va_arg(args, char *));
+    va_end(args);
+
+    return new_str;
+}

lib/libft/ft_strlcpy.c

@@ -12,19 +12,14 @@
 
 #include "libft.h"
 
-size_t	ft_strlcpy(char *dest, const char *src, size_t size)
+u32 ft_strlcpy(char *dest, const char *src, u32 size)
 {
-	size_t	i;
+	if (!size)
+	    return (ft_strlen(src));
 
-	i = 0;
+    u32 i = 0;
-	if (size)
+    for (; i < size && src[i] != '\0'; i++)
-	{
-		while (i < size - 1 && src[i] != '\0')
-		{
         dest[i] = src[i];
-			i++;
-		}
     dest[i] = '\0';
-	}
 	return (ft_strlen(src));
 }

lib/libft/ft_substr.c

@@ -24,7 +24,7 @@ char	*ft_substr(char const *s, unsigned int start, size_t len)
 		size = 0;
 	else if ((unsigned long)size > len)
 		size = len;
-	new_s = malloc(size + 1);
+	new_s = ft_calloc(size + 2, 1);
 	if (new_s == NULL)
 		return (NULL);
 	if (start <= ft_strlen(s))

lib/libft/libft.h

@@ -16,6 +16,7 @@
 # include <unistd.h>
 # include <stdint.h>
 # include <inttypes.h>
+# include <stdarg.h>
 
 typedef struct s_list
 {
@@ -52,12 +53,16 @@ void	*ft_memcpy(void *dest, const void *src, size_t s);
 void	*ft_memmove(void *dest, const void *src, size_t s);
 void	*ft_memchr(const void *memory_block, int searched_char, size_t size);
 int		ft_memcmp(const void *pointer1, const void *pointer2, size_t size);
-size_t	ft_strlcpy(char *dest, const char *src, size_t size);
+char    *ft_strcpy(char *dest, const char *src);
+u32     ft_strlcpy(char *dest, const char *src, u32 size);
 char	*ft_strnstr(const char *big, const char *little, size_t len);
 char	*ft_strchr(const char *str, int search);
 char	*ft_strrchr(const char *str, int search);
+i32     ft_strcmp(const char *s1, const char *s2);
 int		ft_strncmp(const char *s1, const char *s2, size_t n);
+char *	ft_strcat(char *dest, const char *src);
 size_t	ft_strlcat(char *dest, const char *src, size_t size);
+char 	*ft_strlcats(u32 nbr_str, ...);
 char	*ft_strdup(const char *src);
 int		ft_atoi(const char *nptr);
 char	**ft_split(char const *s, char c);
@@ -76,12 +81,14 @@ char	*ft_strtrim(char const *s1, char const *set);
 char	*ft_substr(char const *s, unsigned int start, size_t len);
 t_list	*ft_lstnew(void *content);
 void	ft_lstadd_front(t_list **lst, t_list *new);
+void	ft_lstadd_back(t_list **lst, t_list *new);
 int		ft_lstsize(t_list *lst);
 t_list	*ft_lstlast(t_list *lst);
-void	ft_lstadd_back(t_list **lst, t_list *new);
 void	ft_lstdelone(t_list *lst, void (*del)(void*));
 void	ft_lstclear(t_list **lst, void (*del)(void*));
 void	ft_lstiter(t_list *lst, void (*f)(void *));
 t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));
+void	ft_lstremove_front(t_list **lst, void (*del)(void*));
+void	ft_lstremove_back(t_list **lst, void (*del)(void*));
 int	    ft_atoi_check(const char *nptr);
 u32     ft_strslen(char **strs);

src/directory.c

@@ -0,0 +1,102 @@
+void 
+strmode(mode_t mode, char *buf) {
+    const char chars[] = "rwxrwxrwx";
+    for (size_t i = 0; i < 9; i++)
+        buf[i] = (mode & (1 << (8-i))) ? chars[i] : '-';
+    buf[9] = '\0';
+}
+
+void 
+delete_directory(void *deleted) {
+    t_list *lst = (t_list*)deleted;
+    dir_t *dir = (dir_t*)lst->content;
+    free(dir->path);
+    free(dir);
+}
+
+void
+remove_all_end_character(char *str, char c) {
+    for (i32 i = ft_strlen(str) - 1; i >= 0; i--) {
+        if (str[i] != c)
+            return;
+        str[i] = '\0';
+    }
+}
+
+t_list **
+get_all_in(dir_t *dir) {
+    struct dirent *in_dir;
+    t_list **head = ft_calloc(1, sizeof(t_list*)); 
+    while ((in_dir = readdir(dir->dir)) != nullptr) {
+        if (!flags.a && ft_strncmp(".", in_dir->d_name, 1) == 0)
+            continue;
+        remove_all_end_character(dir->path, '/');
+        char *new_path = ft_strlcats(3, dir->path, "/", in_dir->d_name);
+        dir_t *new_dir = get_directory_files(new_path);
+        free(new_path);
+        if (!new_dir)
+            continue;
+        new_dir->name = in_dir->d_name;
+
+        if (ft_strcmp(new_dir->name, "switchpro_rstick_click_md.png") == 0)
+            ft_printf("");
+
+        add_sort(head, new_dir, false);
+    }
+    return head;
+}
+
+
+static bool compare_name(char *s1, char *s2);
+static bool compare_time(dir_t *dir1, dir_t *dir2);
+
+void
+add_sort(t_list **head, dir_t *new_dir, bool file_priority) {
+    t_list *cur = *head, *prev = NULL;
+    for (; cur != nullptr; prev = cur, cur = cur->next) {
+        dir_t *cur_dir = ((dir_t *)cur->content);
+        if (file_priority && !cur_dir->is_file && new_dir->is_file)
+            break;
+        else if (file_priority && cur_dir->is_file && !new_dir->is_file)
+            continue;
+
+        if (flags.t) {
+            if (compare_time(new_dir, cur_dir))
+                break;
+        }
+        else
+            if (compare_name(new_dir->name, cur_dir->name))
+                break;
+    }
+    t_list *new = ft_lstnew(new_dir);
+    if (!prev)
+        *head = new;
+    else
+        prev->next = new;
+    new->next = cur;
+}
+
+static bool compare_name(char *s1, char *s2) {
+    i32 cmp = ft_strcmp(s1, s2);
+    if ((flags.r && cmp > 0) || (!flags.r && cmp < 0))
+        return true;
+    return false;
+}
+
+static bool compare_time(dir_t *dir1, dir_t *dir2) {
+    time_t dir1_sec = dir1->lstat.st_mtim.tv_sec;
+    time_t dir2_sec = dir2->lstat.st_mtim.tv_sec;
+    time_t dir1_nsec = dir1->lstat.st_mtim.tv_nsec;
+    time_t dir2_nsec = dir2->lstat.st_mtim.tv_nsec;
+    i64 diff_sec = dir1_sec - dir2_sec;
+    i64 diff_nsec = dir1_nsec - dir2_nsec;
+    if (diff_sec == 0 && diff_nsec == 0) {
+        if (compare_name(dir1->name, dir2->name))
+            return true;
+    }
+    else if ((flags.r && (diff_sec < 0 || (diff_sec == 0 && diff_nsec < 0))) ||
+            (!flags.r && (diff_sec > 0 || (diff_sec == 0 && diff_nsec > 0))))
+        return true;
+    return false;
+}
+

src/display.c

@@ -0,0 +1,96 @@
+static void display_recursive(dir_t *dir);
+
+void space_between_files(t_list **files, dir_t *file) {
+
+    if (win.ws_col == 0) {
+        ft_printf("\n");
+        return;
+    }
+
+    u32 max = 0, i = 0, index_file = 0;
+    for (t_list *cur = *files; cur != nullptr; cur = cur->next) {
+        dir_t *cur_file = (dir_t*)(cur)->content;
+        max = MAX(ft_strlen(cur_file->name), max);
+        if (ft_strcmp(cur_file->name, file->name) == 0)
+            index_file = i;
+        i++;
+    }
+    u32 col = MAX(win.ws_col / max, 1);
+    u32 cal = index_file % col;
+    if (col >= i && index_file != i - 1)
+        ft_printf("  ");
+    else if (col >= i && index_file == i - 1)
+        ft_printf("\n");
+    else if (cal == col - 1 || index_file == i - 1)
+        ft_printf("\n");
+    else
+        for (i = 0; i < max - ft_strlen(file->name) + 1; i++)
+            ft_printf(" ");
+}
+
+void
+display_name(dir_t *dir) {
+    ft_printf("%s", dir->name);
+}
+
+void
+display_directory(dir_t *dir) {
+    if (flags.R) {
+        if (!dir->is_file)
+            display_recursive(dir);
+    }
+    else {
+        t_list **files = get_all_in(dir);
+        display_files(files);
+        free_files(files);
+    }
+}
+
+i32
+display_files(t_list **files) {
+    i32 drawed = 0;
+    if (flags.l)
+        return display_files_stat(files);
+    else {
+        for (t_list *cur = *files; cur != nullptr; cur = cur->next) { 
+            dir_t *dir = (dir_t*)(cur)->content;
+            display_name(dir);
+            drawed++;
+            if (cur->next != nullptr)
+                space_between_files(files, dir);
+        }
+        if (drawed > 0)
+            ft_printf("\n");
+    }
+    return drawed;
+}
+
+static void
+to_print_return_of_line() {
+    static int need_to_return_of_line = 0;
+    if (!need_to_return_of_line)
+        need_to_return_of_line = 1;
+    else {
+        ft_printf("\n");
+    }
+}
+
+static void
+display_recursive(dir_t *dir) {
+    if (dir->is_file)
+       return;
+
+    to_print_return_of_line();
+    ft_printf("%s:\n", dir->path);
+    t_list **files = get_all_in(dir);
+    display_files(files);
+    for (t_list *cur = *files; cur != nullptr; cur = cur->next) {
+        dir_t *cur_dir = (dir_t*)cur->content;
+        if (!cur_dir->is_file
+            && ft_strcmp(".", cur_dir->name) != 0
+            && ft_strcmp("..", cur_dir->name) != 0)
+            display_recursive(cur_dir);
+    }
+    free_files(files);
+}
+

src/display_stat.c

@@ -0,0 +1,129 @@
+static void display_type(dir_t *dir);
+static void display_permission(dir_t *dir);
+static void display_size(dir_t *dir, i32 max_size);
+static void display_date(dir_t *dir);
+static void display_path(dir_t *dir);
+
+i32
+display_files_stat(t_list **files) {
+    if (!files)
+        return 0;
+    if (ft_lstsize(*files) <= 0) {
+        ft_printf("total 0\n");
+        return 0;
+    }
+
+
+    i32 max_size = ft_get_size(((dir_t*)(*files)->content)->lstat.st_size);
+    i32 total = 0;
+    t_list *cur;
+    for (cur = *files; cur != nullptr; cur = cur->next) { 
+        dir_t *dir = (dir_t*)(cur)->content;
+        max_size = MAX(ft_get_size(dir->lstat.st_size), max_size);
+        total += dir->lstat.st_blocks;
+    }
+
+    ft_printf("total %d\n", total / 2);
+
+    i32 drawed = 0;
+    for (cur = *files; cur != nullptr; cur = cur->next) { 
+        dir_t *dir = (dir_t*)(cur)->content;
+        display_single_stat(dir, max_size);
+        drawed++;
+        ft_printf("\n");
+    }
+    return drawed;
+}
+
+void
+display_single_stat(dir_t *dir, i32 max_size) {
+    if (!dir) 
+        return;
+    display_type(dir);
+    display_permission(dir);
+    ft_printf(" ");
+    ft_printf("%d", dir->lstat.st_nlink);
+    ft_printf(" ");
+    if (dir->psswd)
+        ft_printf("%s", dir->psswd->pw_name);
+    ft_printf(" ");
+    if (dir->grp)
+        ft_printf("%s", dir->grp->gr_name);
+    ft_printf(" ");
+    display_size(dir, max_size);
+    ft_printf(" ");
+    display_date(dir);
+    ft_printf(" ");
+    display_name(dir);
+    if (S_ISLNK(dir->lstat.st_mode))
+        display_path(dir);
+}
+
+static void
+display_type(dir_t *dir) {
+    if (!dir)
+        return;
+    if (S_ISLNK(dir->lstat.st_mode))
+        ft_printf("l");
+    else if (!dir->is_file)
+        ft_printf("d");
+    else if (S_ISSOCK(dir->lstat.st_mode))
+        ft_printf("s");
+    else if (S_ISFIFO(dir->lstat.st_mode))
+        ft_printf("p");
+    else if (S_ISCHR(dir->lstat.st_mode))
+        ft_printf("c");
+    else if (S_ISBLK(dir->lstat.st_mode))
+        ft_printf("b");
+    else
+        ft_printf("-");
+}
+
+static void
+display_permission(dir_t *dir) {
+    if (!dir)
+        return;
+    char buf[10];
+    strmode(dir->stat.st_mode, buf);
+    ft_printf("%s", buf);
+}
+
+static void
+display_size(dir_t *dir, i32 max_size) {
+    if (!dir)
+        return;
+    i32 len = ft_get_size(dir->lstat.st_size);
+
+    for (int i = max_size - len; i > 0; i--)
+        ft_printf(" ");
+    ft_printf("%d", dir->lstat.st_size);
+}
+
+static void
+display_date(dir_t *dir) {
+    if (!dir)
+        return;
+    struct timespec last_edit = dir->lstat.st_mtim;
+    char *base_time_str = ctime(&last_edit.tv_sec);
+    if (!base_time_str)
+        return;
+
+    char *time_str = ft_substr(base_time_str, 4, ft_strlen(base_time_str) - 14);
+    if (!time_str)
+        return;
+    ft_printf(time_str);
+
+    free(time_str);
+}
+
+static void
+display_path(dir_t *dir) {
+    if (!dir || !dir->path)
+        return;
+    char buf[512] = {[0 ... 511] = 0};
+    i32 error = readlink(dir->path, buf, dir->lstat.st_size);
+    if (error == -1)
+        return;
+    ft_printf(" -> %s", buf);
+}
+

src/free.c

@@ -0,0 +1,15 @@
+void
+free_files(t_list **files) {
+    for (t_list *cur = *files; cur != nullptr;) {
+        dir_t *file = (dir_t*)cur->content;
+        if (!file->is_file)
+            closedir(file->dir);
+        free(file->path);
+        free(file);
+
+        t_list *next = cur->next;
+        free(cur);
+        cur = next;
+    }
+    free(files);
+}

src/main.c

@@ -1,17 +1,48 @@
-int main(int argc, char **argv) {
+flags_t flags = {false, false, false, false, false, false,
+                 {-1, -1}};
+struct winsize win;
 
-    if (argc < 2)
+int
-        return 1;
+main(int argc, char **argv) {
 
-    flags_t flags = get_flags(argv);
+    if (argc > 1) {
+        get_flags(argv);
         if (flags.error[0] != -1) {
-        ft_printf_fd(2, "ls: invalid line width: \'%s\'",
+            ft_printf_fd(2, "ft_ls: invalid option -- \'%s\'\n",
                          &argv[flags.error[0]][flags.error[1]]);
             return 2;
         }
-    display_flags(flags);
+    }
-
+
-    //ft_ls(flags);
+    ioctl(STDOUT_FILENO, TIOCGWINSZ, &win);
-
+    errno = 0;
-    return 0;
+
+    t_list **files = ft_calloc(ft_strslen(argv) + 1, sizeof(t_list*));
+    t_list **dirs = ft_calloc(ft_strslen(argv) + 1, sizeof(t_list*));
+    i32 max_size = 0, len = 0, error = 0;
+    parsing(argv, &files, &dirs, &max_size, &len, &error);
+
+    if (len == 0 && error == 0)
+        add_sort(dirs, get_directory_files("."), true);
+
+    i32 left = len;
+    if (ft_lstsize(*files) > 0)
+        left -= display_files(files);
+    free_files(files);
+
+    if (left != len && left > 0)
+        ft_printf("\n");
+
+    for (t_list *cur = *dirs; cur != nullptr; cur = cur->next) {
+        dir_t *dir = (dir_t*)cur->content;
+        if (len > 1 && !flags.R)
+            ft_printf("%s:\n", dir->path);
+        display_directory(dir);
+        if (left > 1)
+            ft_printf("\n");
+        left--;
+    }
+    free_files(dirs);
+
+    return error;
 }

src/parsing.c

@@ -1,10 +1,10 @@
-flags_t get_flags(char **argv) {
+void
-    flags_t flags = {false, false, false, false, false, 
+get_flags(char **argv) {
-                     {-1, -1}};
+    for (i32 i = 1; argv[i] != nullptr; i++) {
-
+        if (ft_strcmp(argv[i], "--") == 0)
-    for (int i = 1; argv[i] != NULL; i++) {
+            return;
         if (argv[i][0] == '-') {
-            for (int j = 1; argv[i][j] != '\0'; j++) {
+            for (i32 j = 1; argv[i][j] != '\0'; j++) {
                 if (argv[i][j] == 'l')
                     flags.l = true;
                 else if (argv[i][j] == 'a')
@@ -18,27 +18,82 @@ flags_t get_flags(char **argv) {
                 else {
                     flags.error[0] = i;
                     flags.error[1] = j;
-                    return flags;
+
+                    return ;
+                }
             }
         }
     }
 }
 
-    return flags;
+void
+parsing(char **argv, t_list ***files, t_list ***dirs, i32 *max_size, i32 *len, i32 *error) { 
+    for (i32 i = 0; argv[i + 1] != nullptr; i++) {
+        if (ft_strcmp(argv[i + 1], "--") == 0) {
+            flags.dashdash = true;
+            continue;
+        }
+        dir_t *dir = get_directory_files(argv[i + 1]);
+        if (dir != nullptr) {
+            (*len)++;
+            if (dir->is_file) {
+                *max_size = MAX(ft_get_size(dir->lstat.st_size), *max_size);
+                add_sort(*files, dir, true);
+            }
+            else
+                add_sort(*dirs, dir, true);
+        }
+        else if (errno > 0)
+            *error = 2;
+    }
+    flags.dashdash = false;
 }
 
-void display_flags(flags_t flags) {
+static void*
-    ft_printf("l: %b; a: %b; R: %b; r: %b; t: %b\n",
+free_dir_return_null(dir_t *dir) {
-              flags.l, flags.a, flags.R, flags.r, flags.t);
+    free(dir->path);
+    free(dir);
+    return nullptr;
 }
 
-char **get_files(char **argv) {
+dir_t *
+get_directory_files(char *path) {
+    dir_t *dir = nullptr;
 
-    char **files = ft_calloc(ft_strslen(argv), sizeof(char*));
+    if (!flags.dashdash)
+    if (path[0] == '-' && ft_strlen(path) != 1)
+        return nullptr;
 
-    for (int i = 1; argv[i] != NULL; i++) {
+    dir = ft_calloc(1, sizeof(dir_t));
-        if (argv[i][0] == '-') {
+    dir->path = ft_strdup(path);
-        }
+    dir->name = dir->path;
-    }
+    stat(path, &dir->stat);
+    lstat(path, &dir->lstat);
+    dir->psswd = getpwuid(dir->stat.st_uid);
+    if (!dir->psswd)
+        return free_dir_return_null(dir);
+
+    dir->grp = getgrgid(dir->psswd->pw_gid);
+    if (!dir->grp)
+        return free_dir_return_null(dir);
+
+    if (S_ISLNK(dir->lstat.st_mode)) {
+        dir->is_file = true;
+        return dir;
     }
 
+    dir->dir = opendir(path);
+    if (dir->dir == nullptr) {
+        if (errno == EACCES)
+            ft_printf_fd(2, "Permission denied\n");
+        else if (errno == ENOENT)
+            ft_printf_fd(2, "ft_ls: cannot access '%s': No such file or directory\n", path);
+        else if (errno == ENOTDIR) {
+            dir->is_file = true;
+            return dir;
+        }  
+        return free_dir_return_null(dir);
+    }
+
+    return dir;
+}