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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/03/15 14:13:51 by dkaiser #+# #+# */
/* Updated: 2024/03/25 15:26:21 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
static int get_next_line_len(char *buf, int pos)
{
int len;
len = 0;
while (pos + len < BUFFER_SIZE)
{
if (buf[pos + len] == '\n')
{
len++;
break ;
}
if (!buf[pos + len])
break ;
len++;
}
return (len);
}
static void get_next_line_rec(int fd, char *buf, char **result, int pos)
{
int len;
int i;
int readlen;
len = get_next_line_len(buf, pos);
*result = str_add_buffer(*result, buf + pos, len);
if (pos + len == BUFFER_SIZE && buf[BUFFER_SIZE - 1] == '\n')
return (clear_buffer(buf, pos));
i = 0;
while (i < len)
buf[pos + i++] = '\0';
if (pos + len == BUFFER_SIZE && *result)
{
readlen = read(fd, buf, BUFFER_SIZE);
if (readlen < 0)
{
clear_buffer(buf, 0);
free(*result);
*result = NULL;
}
else if (readlen > 0)
get_next_line_rec(fd, buf, result, 0);
}
}
char *get_next_line(int fd)
{
static char buf[BUFFER_SIZE];
int i;
char *result;
int readlen;
i = 0;
readlen = 0;
result = NULL;
while (i < BUFFER_SIZE && !buf[i])
i++;
if (i == BUFFER_SIZE)
{
readlen = read(fd, buf, BUFFER_SIZE);
if (readlen < 0)
clear_buffer(buf, 0);
else if (readlen > 0)
return (get_next_line(fd));
return (NULL);
}
get_next_line_rec(fd, buf, &result, i);
return (result);
}
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