mes/lib/tests/stdio/90-fseek.c
Jan Nieuwenhuizen 3ed82d7010
mescc: Mes C Library: Cleanup includes.
* include/mes/lib-mini.h: Move from include/libmes-mini.h.  Update users.
* include/mes/lib.h: Move from include/libmes.h.  Update users.
2019-05-08 00:25:41 +02:00

59 lines
1.5 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mes/lib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
int
main ()
{
int fd = open ("COPYING", 0);
if (fd <= 0)
return 1;
FILE* f = fdopen (fd, "r");
int r = fseek (f, 0, SEEK_CUR);
if (r != 0)
return 2;
int pos = ftell (f);
if (pos != 0)
return 3;
r = fseek (f, 0, SEEK_END);
if (r != 0)
return 4;
pos = ftell (f);
eputs ("size="); eputs (itoa (pos)); eputs ("\n");
if (pos != 35147)
return 5;
r = fseek (f, 0, SEEK_SET);
char buf[4096];
fgets (buf, 200, f);
eputs ("buf:"); eputs (buf);
if (strcmp (buf, " GNU GENERAL PUBLIC LICENSE\n"))
return 6;
return 0;
}