/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_getline.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/03/07 15:12:59 by tmaze             #+#    #+#             */
/*   Updated: 2019/03/07 22:06:57 by tmaze            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static char	*supercat(char **s1, char *buff)
{
	char	*tmp;

	if ((tmp = ft_strjoin(*s1, buff)) == NULL)
		return (NULL);
	ft_strdel(s1);
	ft_strclr(buff);
	*s1 = tmp;
	return (*s1);
}

static int	update_line(char **line, char *buff)
{
	if (*line == NULL)
	{
		if ((*line = ft_strdup(buff)) == NULL)
			return (-1);
	}
	else if (*line != NULL)
		if (supercat(line, buff) == NULL)
		{
			ft_strdel(line);
			return (-1);
		}
	return (0);
}

int			ft_getline(char **line)
{
	static char	buff[BUFF_SIZE + 1];
	char		*ind;
	int			ret;

	if (line == NULL)
		return (-1);
	*line = NULL;
	ind = NULL;
	ft_bzero(buff, BUFF_SIZE + 1);
	while ((ret = read(0, buff, BUFF_SIZE)) == BUFF_SIZE
			&& (ind = ft_strchr(buff, '\n')) == NULL)
	{
		if (update_line(line, buff) == -1)
			return (-1);
		ft_bzero(&buff, BUFF_SIZE + 1);
	}
	if (ind != NULL || (ind == NULL && (ind = ft_strchr(buff, '\n')) != NULL))
		*ind = '\0';
	if (update_line(line, buff) == -1)
			return (-1);
	if (ind == NULL)
		ft_bzero(&buff, BUFF_SIZE + 1);
	if (ind != NULL && ind < &(buff[BUFF_SIZE]))
		ft_memmove(buff, ind + 1, ft_strlen(ind + 1));
	return (*line != NULL && ret != 0);
}