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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/10/19 09:08:36 by cacharle #+# #+# */
/* Updated: 2019/10/19 16:19:25 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <unistd.h>
#include <stdlib.h>
#include "get_next_line.h"
int get_next_line(int fd, char **line)
{
int ret;
int split_at;
char buf[BUFFER_SIZE + 1];
static char rest[BUFFER_SIZE + 1] = {0};
if (fd < 0 || line == NULL)
return (ERROR);
int has_stuff = rest[0] != 0;
*line = put_rest(*line, rest);
if (rest[0] != '\0')
return (LINE_READ);
while ((ret = read(fd, buf, BUFFER_SIZE)) > 0)// || rest[0] != '\0')
{
buf[ret] = '\0';
split_at = find_newline(buf);
if (split_at == -1)
{
*line = ft_strappend(*line, buf);
continue ;
}
buf[split_at] = '\0';
ft_strncpy(rest, buf + split_at + 1, BUFFER_SIZE + 1);
*line = ft_strappend(*line, buf);
return LINE_READ;
}
if (has_stuff)
return (LINE_READ);
return (ret == -1 ? ERROR : END_OF_FILE);
}
char *put_rest(char *line, char *rest)
{
int split_at;
split_at = find_newline(rest);
if (split_at == -1)
{
line = malloc(sizeof(char) * (ft_strlen(rest) + 1));
ft_strcpy(line, rest);
/* line[ft_strlen(rest)] = 0; */
rest[0] = '\0';
return (line);
}
line = malloc(sizeof(char) * (split_at + 1));
ft_strncpy(line, rest, split_at + 1);
line[split_at] = '\0';
ft_strncpy(rest, rest + split_at + 1, BUFFER_SIZE);
return (line);
}
int find_newline(char *str)
{
int i;
i = -1;
while (str[++i])
if (str[i] == '\n')
return (i);
return (-1);
}
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