base struct

2025-01-13 13:21:53 +01:00
parent a7e1a55200
commit 09c2cb5b3e
47 changed files with 1835 additions and 0 deletions
--- a/lib/libft/srcs/gnl/gnl.c
+++ b/lib/libft/srcs/gnl/gnl.c
@@ -0,0 +1,123 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   gnl.c                                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: nalebrun <nalebrun@student.s19.be>         +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/11/27 11:45:42 by nalebrun          #+#    #+#             */
+/*   Updated: 2024/11/27 12:50:04 by nalebrun         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../libft.h"
+#include "gnl.h"
+
+void	free_buf(char **tab)
+{
+	if (tab && *tab)
+	{
+		free(*tab);
+		*tab = NULL;
+	}
+}
+
+char	*build_tab(char *tab, char *buffer, int i)
+{
+	char	*ret;
+	size_t	t_len;
+	size_t	b_len;
+
+	b_len = ft_gstrlen(buffer, -2);
+	t_len = ft_gstrlen(tab, i);
+	ret = malloc(b_len + t_len + 1);
+	if (!ret)
+	{
+		free(tab);
+		return (NULL);
+	}
+	if (tab)
+	{
+		ft_strlcpy(ret, tab, t_len + 1);
+		ft_strlcat(&ret[t_len], buffer, b_len + t_len + 1);
+		free(tab);
+	}
+	else
+		ft_strlcpy(ret, buffer, b_len + 1);
+	return (ret);
+}
+
+char	*get_the_line(char **tab, int i)
+{
+	char	*line;
+	char	*new_tab;
+	size_t	len;
+	char	*nl_pos;
+
+	nl_pos = ft_strichr(*tab, '\n', i);
+	if (!nl_pos)
+		return (NULL);
+	len = nl_pos - *tab + 1;
+	line = malloc(len + 1);
+	if (!line)
+		return (NULL);
+	ft_strlcpy(line, *tab, len + 1);
+	line[len] = '\0';
+	new_tab = ft_strdup(*tab + len);
+	if (!new_tab)
+	{
+		free(line);
+		return (NULL);
+	}
+	free(*tab);
+	*tab = new_tab;
+	return (line);
+}
+
+int	read_file(int fd, char **tab, int i)
+{
+	char	buffer[BUFFER_SIZE + 1];
+	ssize_t	bytes_read;
+
+	bytes_read = read(fd, buffer, BUFFER_SIZE);
+	if (bytes_read <= 0)
+	{
+		if (bytes_read == -1)
+			free_buf(&tab[fd]);
+		return (bytes_read);
+	}
+	buffer[bytes_read] = '\0';
+	tab[fd] = build_tab(tab[fd], buffer, i);
+	if (!tab[fd])
+		return (-1);
+	return (bytes_read);
+}
+
+char	*get_next_line(int fd)
+{
+	static char	*tab[256];
+	char		*next_line;
+	int			i;
+
+	i = -1;
+	next_line = NULL;
+	if (fd < 0 || fd >= 256 || BUFFER_SIZE == 0)
+		return (NULL);
+	while (++i || 1)
+	{
+		next_line = get_the_line(&tab[fd], i);
+		if (next_line)
+			return (next_line);
+		if (read_file(fd, tab, i) <= 0)
+			break ;
+	}
+	if (tab[fd] && *tab[fd])
+	{
+		next_line = tab[fd];
+		tab[fd] = NULL;
+		return (next_line);
+	}
+	free(tab[fd]);
+	tab[fd] = NULL;
+	return (NULL);
+}