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get_next_line.c
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get_next_line.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: agilmet <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/11/01 23:56:33 by agilmet #+# #+# */
/* Updated: 2018/11/27 18:58:32 by agilmet ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
int ft_save_buf(char **str, char *buf)
{
char *tmp;
if (!(*str))
{
if ((*str = ft_strdup(buf)) == NULL)
return (0);
}
else
{
tmp = *str;
if ((*str = ft_strjoin(*str, buf)) == NULL)
{
ft_strdel(str);
return (0);
}
free(tmp);
}
return (1);
}
int ft_fill_line(char **str, char **line)
{
int i;
char *tmp;
i = 0;
while ((*str)[i] && (*str)[i] != '\n')
i++;
if (((*line = ft_strndup(*str, i)) == NULL) ||
((*str)[i] && ((tmp = ft_strdup((*str) + i + 1)) == NULL)))
{
ft_strdel(str);
if ((*line))
ft_strdel(line);
return (0);
}
if (!(*str)[i])
{
ft_strdel(str);
return (1);
}
free(*str);
*str = tmp;
return (1);
}
int get_next_line(const int fd, char **line)
{
static char *tab[OPEN_MAX];
char buf[BUFF_SIZE + 1];
int ret;
int i;
i = 0;
ret = 1;
if (fd < 0 || fd > OPEN_MAX || !line)
return (-1);
while (!(ft_strchr(tab[fd] + i, '\n')) && (i += ret - 1) >= 0 && ret)
{
if ((ret = read(fd, buf, BUFF_SIZE)) == -1)
return (-1);
buf[ret] = '\0';
if (!ft_save_buf(tab + fd, buf))
return (-1);
}
if (!ft_fill_line(&(tab[fd]), line))
return (-1);
if (!ret && !**line)
{
ft_strdel(line);
return (0);
}
return (1);
}