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#include <windows.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#ifdef __CYGWIN__
/* For read() and write() */
#include <unistd.h>
/* Cygwin does not prototype __argc and __argv in stdlib.h */
extern int __argc;
extern char** __argv;
#endif
int _stdcall
WinMain (struct HINSTANCE__ *hInstance,
struct HINSTANCE__ *hPrevInstance,
char *lpszCmdLine,
int nCmdShow)
{
char buf[100];
if (__argc >= 2 && strcmp (__argv[1], "nop") == 0)
{
sprintf (buf, "spawn-test-win32-gui: argv[0]=\"%s\"", __argv[0]);
MessageBox (NULL, buf, lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
}
else if (__argc <= 2)
{
MessageBox (NULL, "spawn-test-win32-gui: Will write to stdout",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
printf ("This is stdout\n");
fflush (stdout);
MessageBox (NULL, "spawn-test-win32-gui: Will write to stderr",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
fprintf (stderr, "This is stderr\n");
fflush (stderr);
}
else if (__argc == 4 && strcmp (__argv[1], "pipes") == 0)
{
int infd = atoi (__argv[2]);
int outfd = atoi (__argv[3]);
int k, n;
if (infd < 0 || outfd < 0)
{
MessageBox (NULL, "spawn-test-win32-gui: illegal fds on command line",
lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
exit (1);
}
MessageBox (NULL, "spawn-test-win32-gui: Will write to parent",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
n = strlen ("Hello there");
if (write (outfd, &n, sizeof (n)) == -1 ||
write (outfd, "Hello there", n) == -1)
{
sprintf (buf, "spawn-test-win32-gui: Write: %s", strerror (errno));
MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
exit (1);
}
MessageBox (NULL, "spawn-test-win32-gui: Will read from parent",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
if ((k = read (infd, &n, sizeof (n))) != sizeof (n))
{
sprintf (buf, "spawn-test-win32-gui: Got only %d bytes, wanted %d",
k, sizeof (n));
MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
exit (1);
}
sprintf (buf, "spawn-test-win32-gui: Parent says %d bytes to read", n);
MessageBox (NULL, buf, lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
if ((k = read (infd, buf, n)) != n)
{
if (k == -1)
sprintf (buf, "spawn-test-win32-gui: Read: %s", strerror (errno));
else
sprintf (buf, "spawn-test-win32-gui: Got only %d bytes", k);
MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
exit (1);
}
MessageBox (NULL, "spawn-test-win32-gui: Will write more to parent",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
n = strlen ("See ya");
if (write (outfd, &n, sizeof (n)) == -1 ||
write (outfd, "See ya", n) == -1)
{
sprintf (buf, "spawn-test-win32-gui: Write: %s", strerror (errno));
MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
exit (1);
}
}
Sleep (2000);
MessageBox (NULL, "spawn-test-win32-gui: Done, exiting.",
lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
return 0;
}
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