get_next_line.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: wboutzou <wboutzou@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/06/26 00:32:10 by wboutzou          #+#    #+#             */
/*   Updated: 2022/06/26 00:32:14 by wboutzou         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "so_long.h"

char	*get_next_line(int fd)
{
	char	*buff;
	char	*saver;
	int		rd;

	if (fd < 0)
		return (0);
	rd = 1;
	saver = NULL;
	buff = (char *) malloc(2 * sizeof(char));
	if (!buff)
		return (NULL);
	buff[0] = 0;
	while (rd > 0)
	{
		rd = read(fd, buff, 1);
		if (rd < 0)
		{
			free(buff);
			return (0);
		}
		buff[rd] = 0;
		saver = ft_strjoin(saver, buff);
	}
	free(buff);
	if (rd == 0 && saver[0] == '\0')
	{
		free(saver);
		saver = NULL;
		return (0);
	}
	return (saver);
}