From a28e57c6e0277a1d7346bec58cf557c52e337501 Mon Sep 17 00:00:00 2001
From: Dominik Kaiser
Date: Mon, 24 Jun 2024 16:58:46 +0200
Subject: Add libft

---
 lib/libft/get_next_line.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 lib/libft/get_next_line.c

(limited to 'lib/libft/get_next_line.c')

diff --git a/lib/libft/get_next_line.c b/lib/libft/get_next_line.c
new file mode 100644
index 0000000..46edb73
--- /dev/null
+++ b/lib/libft/get_next_line.c
@@ -0,0 +1,84 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/15 14:13:51 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/25 15:26:21 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+static int	get_next_line_len(char *buf, int pos)
+{
+	int	len;
+
+	len = 0;
+	while (pos + len < BUFFER_SIZE)
+	{
+		if (buf[pos + len] == '\n')
+		{
+			len++;
+			break ;
+		}
+		if (!buf[pos + len])
+			break ;
+		len++;
+	}
+	return (len);
+}
+
+static void	get_next_line_rec(int fd, char *buf, char **result, int pos)
+{
+	int	len;
+	int	i;
+	int	readlen;
+
+	len = get_next_line_len(buf, pos);
+	*result = str_add_buffer(*result, buf + pos, len);
+	if (pos + len == BUFFER_SIZE && buf[BUFFER_SIZE - 1] == '\n')
+		return (clear_buffer(buf, pos));
+	i = 0;
+	while (i < len)
+		buf[pos + i++] = '\0';
+	if (pos + len == BUFFER_SIZE && *result)
+	{
+		readlen = read(fd, buf, BUFFER_SIZE);
+		if (readlen < 0)
+		{
+			clear_buffer(buf, 0);
+			free(*result);
+			*result = NULL;
+		}
+		else if (readlen > 0)
+			get_next_line_rec(fd, buf, result, 0);
+	}
+}
+
+char	*get_next_line(int fd)
+{
+	static char	buf[BUFFER_SIZE];
+	int			i;
+	char		*result;
+	int			readlen;
+
+	i = 0;
+	readlen = 0;
+	result = NULL;
+	while (i < BUFFER_SIZE && !buf[i])
+		i++;
+	if (i == BUFFER_SIZE)
+	{
+		readlen = read(fd, buf, BUFFER_SIZE);
+		if (readlen < 0)
+			clear_buffer(buf, 0);
+		else if (readlen > 0)
+			return (get_next_line(fd));
+		return (NULL);
+	}
+	get_next_line_rec(fd, buf, &result, i);
+	return (result);
+}
-- 
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