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#include <stdio.h>
#include <sys/types.h>
static int
check (FILE *fp, off_t o)
{
int result = 0;
if (feof (fp))
{
puts ("feof !");
result = 1;
}
if (ferror (fp))
{
puts ("ferror !");
result = 1;
}
if (ftello (fp) != o)
{
printf ("position = %lu, not %lu\n", (unsigned long int) ftello (fp),
(unsigned long int) o);
result = 1;
}
return result;
}
static int
do_test (void)
{
FILE *fp = tmpfile ();
if (fp == NULL)
{
puts ("tmpfile failed");
return 1;
}
if (check (fp, 0) != 0)
return 1;
puts ("going to write");
if (fputs ("hello", fp) == EOF)
{
puts ("fputs failed");
return 1;
}
if (check (fp, 5) != 0)
return 1;
puts ("going to rewind");
rewind (fp);
if (check (fp, 0) != 0)
return 1;
puts ("going to read char");
int c = fgetc (fp);
if (c != 'h')
{
printf ("read %c, not %c\n", c, 'h');
return 1;
}
if (check (fp, 1) != 0)
return 1;
puts ("going to put back");
if (ungetc (' ', fp) == EOF)
{
puts ("ungetc failed");
return 1;
}
if (check (fp, 0) != 0)
return 1;
puts ("going to write again");
if (fputs ("world", fp) == EOF)
{
puts ("2nd fputs failed");
return 1;
}
if (check (fp, 5) != 0)
return 1;
puts ("going to rewind again");
rewind (fp);
if (check (fp, 0) != 0)
return 1;
if (fclose (fp) != 0)
{
puts ("fclose failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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