UtilLib

gnl.c

@@ -0,0 +1,106 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   gnl.c                                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: yantoine <yantoine@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/12/20 14:35:58 by hexplor           #+#    #+#             */
+/*   Updated: 2024/10/25 21:47:48 by yantoine         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+char	*get_next_line(int fd)
+{
+	static char	*static_str;
+	char		*line;
+
+	if (fd < 0 || BUFFER_SIZE <= 0)
+		return (0);
+	static_str = gnl_read_fd(fd, static_str);
+	if (!static_str)
+		return (NULL);
+	line = gnl_ft_getline(static_str);
+	static_str = gnl_ft_remove_bn(static_str);
+	return (line);
+}
+
+char	*gnl_read_fd(int fd, char *str)
+{
+	char	*tmp;
+	int		bytes;
+
+	tmp = malloc((BUFFER_SIZE + 1) * sizeof(char));
+	if (!tmp)
+		return (NULL);
+	bytes = 1;
+	while (!gnl_ft_strchr(str, '\n') && (bytes != 0))
+	{
+		bytes = read(fd, tmp, BUFFER_SIZE);
+		if (bytes == -1)
+		{
+			free(tmp);
+			return (NULL);
+		}
+		tmp[bytes] = '\0';
+		str = gnl_ft_strjoin(str, tmp);
+	}
+	free(tmp);
+	return (str);
+}
+
+char	*gnl_ft_getline(char *static_str)
+{
+	int		i;
+	char	*line;
+
+	i = 0;
+	if (!static_str[i])
+		return (NULL);
+	while (static_str[i] && static_str[i] != '\n')
+		i++;
+	line = (char *)malloc(sizeof(char) * (i + 2));
+	if (!line)
+		return (NULL);
+	i = 0;
+	while (static_str[i] && static_str[i] != '\n')
+	{
+		line[i] = static_str[i];
+		i++;
+	}
+	if (static_str[i] == '\n')
+	{
+		line[i] = static_str[i];
+		i++;
+	}
+	line[i] = '\0';
+	return (line);
+}
+
+char	*gnl_ft_remove_bn(char *static_str)
+{
+	int		i;
+	int		j;
+	char	*restof;
+
+	i = 0;
+	while (static_str[i] && static_str[i] != '\n')
+		i++;
+	if (!static_str[i])
+	{
+		free(static_str);
+		return (NULL);
+	}
+	restof = (char *)malloc(sizeof(char) * (gnl_ft_strlen(static_str) - i + 1));
+	if (!restof)
+		return (NULL);
+	i++;
+	j = 0;
+	while (static_str[i])
+		restof[j++] = static_str[i++];
+	restof[j] = '\0';
+	free(static_str);
+	return (restof);
+}