/* Test of ftell() function.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ This program 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 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <stdio.h>
+#include <stdlib.h>
+
+#include "binary-io.h"
+
+#define ASSERT(expr) \
+ do \
+ { \
+ if (!(expr)) \
+ { \
+ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+ fflush (stderr); \
+ abort (); \
+ } \
+ } \
+ while (0)
int
main (int argc, char **argv)
{
+ int ch;
/* Assume stdin is seekable iff argc > 1. */
- int expected = argc > 1 ? 0 : -1;
- return ftell (stdin) != expected;
+ if (argc == 1)
+ {
+ ASSERT (ftell (stdin) == -1);
+ return 0;
+ }
+
+ /* mingw ftell is unreliable on text mode input. */
+ SET_BINARY (0);
+
+ /* Simple tests. */
+ ASSERT (ftell (stdin) == 0);
+
+ ch = fgetc (stdin);
+ ASSERT (ch == '#');
+ ASSERT (ftell (stdin) == 1);
+
+ /* Test ftell after ungetc of read input. */
+ ch = ungetc ('#', stdin);
+ ASSERT (ch == '#');
+ ASSERT (ftell (stdin) == 0);
+
+ ch = fgetc (stdin);
+ ASSERT (ch == '#');
+ ASSERT (ftell (stdin) == 1);
+
+ /* Test ftell after fseek. */
+ ASSERT (fseek (stdin, 2, SEEK_SET) == 0);
+ ASSERT (ftell (stdin) == 2);
+
+ /* Test ftell after random ungetc. */
+ ch = fgetc (stdin);
+ ASSERT (ch == '/');
+ ch = ungetc ('@', stdin);
+ ASSERT (ch == '@');
+ ASSERT (ftell (stdin) == 2);
+
+ ch = fgetc (stdin);
+ ASSERT (ch == '@');
+ ASSERT (ftell (stdin) == 3);
+
+#if !defined __hpux /* HP-UX 11 has a known bug here */
+ /* Test ftell after ungetc without read. */
+ ASSERT (fseek (stdin, 0, SEEK_CUR) == 0);
+ ASSERT (ftell (stdin) == 3);
+#endif
+
+ ch = ungetc ('~', stdin);
+ ASSERT (ch == '~');
+ ASSERT (ftell (stdin) == 2);
+
+ /* Test ftell beyond end of file. */
+ ASSERT (fseek (stdin, 0, SEEK_END) == 0);
+ ch = ftell (stdin);
+ ASSERT (fseek (stdin, 10, SEEK_END) == 0);
+ ASSERT (ftell (stdin) == ch + 10);
+
+ return 0;
}