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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:07:20 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:07:20 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
static uint8_t
ft_linecheck(const char *str)
{
size_t i;
i = 0;
while (str[i] != '\0')
{
if (str[i] == '\n')
return (1);
i++;
}
return (0);
}
static size_t
ft_linelen(const char *str)
{
size_t i;
i = 0;
while (str[i] != '\n' && str[i] != '\0')
i++;
return (i);
}
static int
ft_linedup(int fd, char **str)
{
char *buff;
char *tmp;
int ret;
if (!(buff = (char *)malloc((BUFFER_SIZE + 1) * sizeof(char))))
return (0);
ret = 1;
while (!ft_linecheck(*str) && (ret = read(fd, buff, BUFFER_SIZE)) > 0)
{
buff[ret] = '\0';
tmp = *str;
*str = ft_strjoin(tmp, buff);
ft_memdel((void**)&tmp);
}
if (ret < 0)
{
ft_memdel((void**)&str);
ft_memdel((void**)&buff);
return (-1);
}
free(buff);
return (ret);
}
static int
ft_errchck(int fd, char **line, char **str)
{
if (*str == NULL)
*str = ft_nstr(0);
if (fd < 0 || !line || BUFFER_SIZE <= 0)
{
ft_memdel((void**)&str);
return (-1);
}
return (0);
}
int
get_next_line(int fd, char **line)
{
static char *str;
char *tmp;
size_t i;
int ret;
if (ft_errchck(fd, line, &str) == -1)
return (-1);
ret = ft_linedup(fd, &str);
if (ret < 0)
return (-1);
i = ft_linelen(str);
*line = ft_substr(str, 0, i);
tmp = str;
if (tmp[0] != '\0' && tmp)
str = ft_strdup(tmp + i + (tmp[i] == '\n'));
if (ret == 0 && ((str == NULL || str[0] == '\0') || !ft_linecheck(str)))
{
i = tmp[i];
if (i == '\n')
ft_memdel((void**)&tmp);
return (i == '\n');
}
ft_memdel((void**)&tmp);
return (1);
}
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