42Exam-Rank03-get_next_line

get_next_line.c

#include <stdlib.h>
#include <unistd.h>

char *get_next_line(int fd) 
{
	if (BUFFER_SIZE < 1 || fd < 0 || read(fd, NULL, 0) < 0) { return (NULL); }
	char *line = malloc(100000), *buf = line;
	while (read(fd, buf, 1) > 0 && *buf++ != '\n');
	return (buf > line) ? (*buf = 0, line) : (free(line), NULL);
}