gnl_main.c

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#include "get_next_line.h"
#include "libft.h"

int	main(int argc, char **argv)
{
	int fds[8192];
	
	if (argc >= 2)
	{
		if (argv[1][0] == '@')
			goto errors;
		if (argv[1][0] == 'i')
			goto stdi;
		for (int i = 1; i < argc; i++)
		{
			fds[i - 1] = open(argv[i], O_RDONLY);
			if (fds[i - 1] == -1)
				break;
		} 
		char *str = NULL;
		int ret = 1;
		printf(" --- READING %s --- \n", argv[1]);
		while (1)
		{
			for (int i = 0; i < argc - 1; i++)
			{
				ret = get_next_line(fds[i], &str);
				printf("%i => %d: %s\n", i, ret, str);
				/*ft_strdel(&str);*/
				if (ret <= 0)
					goto end;
			}
		}
		goto end;
stdi:
		{
			printf("Reading from stdin\n");
			int fd = 0;
			double avg = 0;
			int count = 0;
			char *s = NULL;
			int ret = 1;
			while ((ret = get_next_line(fd, &s)) > 0)
			{
				double number = atof(s);
				avg = ((avg * count) + number) / (count + 1);
				count++;
				printf("New average: %01lf\n", avg);
				free(s);
			}
		}
		goto end;
errors:
		{
			printf("Running special error checking\n");
			int	fd_dead = open("lol_i_don't_exist", O_RDONLY);
			int fd_real = open("author", O_RDONLY);
			printf("%d\n", fd_real);
			char *s = NULL;
			assert(-1 == get_next_line(-1, &s));
			assert(-1 == get_next_line(fd_dead, &s));
			assert(-1 == get_next_line(48393, &s));
			assert(-1 == get_next_line(493, &s));
			assert(-1 != get_next_line(fd_real, &s));
			assert(-1 == get_next_line(open("33232@@@", O_RDONLY), &s));
			printf("All tests passed, it seems\n");
		}
		goto skip;
end:
		printf(" --- end --- \n");
	}
skip:
	getchar();
	return (0);
}