Normed the fd function of stdme

stdme/src/fs/file.c

@@ -0,0 +1,81 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   file.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/30 16:26:32 by rparodi           #+#    #+#             */
+/*   Updated: 2024/07/30 16:27:06 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "me/fs/fs.h"
+#include "me/mem/mem.h"
+#include "me/str/str.h"
+#include "me/types.h"
+#include "unistd.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+t_error	open_file(t_str name, t_mode mode, t_file **file)
+{
+	t_file				*out;
+	struct s_file_slot	*slot;
+
+	slot = get_unused_fd_slot();
+	out = &slot->slot.file;
+	out->ptr = fopen(name, mode);
+	if (out->ptr == NULL)
+		return (ERROR);
+	slot->ty = SLOT_FILE;
+	out->name = str_clone(name);
+	*file = out;
+	return (NO_ERROR);
+}
+
+t_error	write_file(t_file *file, t_u8 *buffer, t_usize size,
+					t_isize *write_count)
+{
+	t_isize	ret;
+	t_isize	fake_ret;
+
+	if (write_count == NULL)
+		write_count = &fake_ret;
+	if (file == NULL || buffer == NULL || file->ptr == NULL)
+		return (ERROR);
+	ret = fwrite(buffer, size, 1, file->ptr);
+	if (ret == -1)
+		return (ERROR);
+	*write_count = ret;
+	return (NO_ERROR);
+}
+
+t_error	read_file(t_file *file, t_u8 *buffer, t_usize size, t_isize *read_count)
+{
+	t_isize	ret;
+
+	if (file == NULL || buffer == NULL || read_count == NULL || \
+		file->ptr == NULL)
+		return (ERROR);
+	ret = fread(buffer, size, 1, file->ptr);
+	if (ret == -1)
+		return (ERROR);
+	*read_count = ret;
+	return (NO_ERROR);
+}
+
+void	close_file(t_file *file)
+{
+	struct s_file_slot	*slot;
+
+	if (file == NULL)
+		return ;
+	if (fclose(file->ptr) == -1)
+		return ;
+	slot = (void *)(file)-offsetof(struct s_file_slot, slot.file);
+	mem_set_zero(slot, sizeof(*slot));
+}