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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: mpetruse <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/07/12 22:23:56 by mpetruse #+# #+# */
/* Updated: 2018/07/13 10:09:58 by mpetruse ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
static int find_nl(int fd, char **buf, char **line)
{
char *new_line;
char *tmp;
while ((new_line = ft_strchr(buf[fd], '\n')))
{
tmp = buf[fd];
*new_line = '\0';
*line = ft_strsub(buf[fd], 0, new_line - buf[fd]);
buf[fd] = ft_strdup(new_line + 1);
free(tmp);
return (1);
}
while (*buf[fd])
{
*line = ft_strnew(ft_strlen(buf[fd]));
ft_strcpy(*line, buf[fd]);
buf[fd] = ft_memalloc(BUFF_SIZE + 1);
return (1);
}
return (0);
}
static int ft_read(int fd, char **line)
{
char *buf;
char *tmp;
int i;
buf = ft_strnew(BUFF_SIZE);
while ((i = read(fd, buf, BUFF_SIZE)) > 0)
{
if (!line[fd])
{
line[fd] = ft_strnew(ft_strlen(buf));
ft_strcpy(line[fd], buf);
}
else
{
tmp = line[fd];
line[fd] = ft_strjoin(line[fd], buf);
free(tmp);
}
ft_memset(buf, 0, BUFF_SIZE);
}
free(buf);
return (i);
}
int get_next_line(const int fd, char **line)
{
static char *buf[FDS];
if (!line || fd < 0 || BUFF_SIZE < 0 || (ft_read(fd, &buf[fd]) < 0) ||
fd > FDS)
return (-1);
if (find_nl(fd, &buf[fd], line) == 1)
return (1);
return (0);
}