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#include <ansidecl.h>
#include <stdio.h>
#include <stdlib.h>
void
DEFUN(write_data, (stream), FILE *stream)
{
int i;
for (i=0; i<100; i++)
fprintf (stream, "%d\n", i);
if (ferror (stream)) {
fprintf (stderr, "Output to stream failed.\n");
exit (1);
}
}
void
DEFUN(read_data, (stream), FILE *stream)
{
int i, j;
for (i=0; i<100; i++)
{
if (fscanf (stream, "%d\n", &j) != 1 || j != i)
{
if (ferror (stream))
perror ("fscanf");
puts ("Test FAILED!");
exit (1);
}
}
}
int
DEFUN_VOID(main)
{
FILE *output, *input;
int wstatus, rstatus;
output = popen ("/bin/cat >/tmp/tstpopen.tmp", "w");
if (output == NULL)
{
perror ("popen");
puts ("Test FAILED!");
exit (1);
}
write_data (output);
wstatus = pclose (output);
printf ("writing pclose returned %d\n", wstatus);
input = popen ("/bin/cat /tmp/tstpopen.tmp", "r");
if (input == NULL)
{
perror ("/tmp/tstpopen.tmp");
puts ("Test FAILED!");
exit (1);
}
read_data (input);
rstatus = pclose (input);
printf ("reading pclose returned %d\n", rstatus);
remove ("/tmp/tstpopen.tmp");
puts (wstatus | rstatus ? "Test FAILED!" : "Test succeeded.");
exit (wstatus | rstatus);
}
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