tests/spawn-test-win32-gui.c

   1 #include <windows.h>
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include <fcntl.h>
   7
   8 #ifdef __CYGWIN__
   9 /* For read() and write() */
  10 #include <unistd.h>
  11 /* Cygwin does not prototype __argc and __argv in stdlib.h */
  12 extern int __argc;
  13 extern char** __argv;
  14 #endif
  15
  16 int _stdcall
  17 WinMain (struct HINSTANCE__ *hInstance,
  18         struct HINSTANCE__ *hPrevInstance,
  19         char *lpszCmdLine,
  20         int   nCmdShow)
  21 {
  22   char buf[100];
  23
  24   if (__argc >= 2 && strcmp (__argv[1], "nop") == 0)
  25     {
  26       sprintf (buf, "spawn-test-win32-gui: argv[0]=\"%s\"", __argv[0]);
  27       MessageBox (NULL, buf, lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  28     }
  29   else if (__argc <= 2)
  30     {
  31       MessageBox (NULL, "spawn-test-win32-gui: Will write to stdout",
  32                   lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  33
  34       printf ("This is stdout\n");
  35       fflush (stdout);
  36
  37       MessageBox (NULL, "spawn-test-win32-gui: Will write to stderr",
  38                   lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  39
  40       fprintf (stderr, "This is stderr\n");
  41       fflush (stderr);
  42     }
  43   else if (__argc == 4 && strcmp (__argv[1], "pipes") == 0)
  44     {
  45       int infd = atoi (__argv[2]);
  46       int outfd = atoi (__argv[3]);
  47       int k, n;
  48
  49       if (infd < 0 || outfd < 0)
  50         {
  51           MessageBox (NULL, "spawn-test-win32-gui: illegal fds on command line",
  52                       lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
  53           exit (1);
  54         }
  55
  56       MessageBox (NULL, "spawn-test-win32-gui: Will write to parent",
  57                   lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  58
  59       n = strlen ("Hello there");
  60       if (write (outfd, &n, sizeof (n)) == -1 ||
  61           write (outfd, "Hello there", n) == -1)
  62         {
  63           sprintf (buf, "spawn-test-win32-gui: Write: %s", strerror (errno));
  64           MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
  65           exit (1);
  66         }
  67
  68       MessageBox (NULL, "spawn-test-win32-gui: Will read from parent",
  69                   lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  70
  71       if ((k = read (infd, &n, sizeof (n))) != sizeof (n))
  72         {
  73           sprintf (buf, "spawn-test-win32-gui: Got only %d bytes, wanted %d",
  74                    k, sizeof (n));
  75           MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
  76           exit (1);
  77         }
  78
  79       sprintf (buf, "spawn-test-win32-gui: Parent says %d bytes to read", n);
  80       MessageBox (NULL, buf, lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  81
  82       if ((k = read (infd, buf, n)) != n)
  83         {
  84           if (k == -1)
  85             sprintf (buf, "spawn-test-win32-gui: Read: %s", strerror (errno));
  86           else
  87             sprintf (buf, "spawn-test-win32-gui: Got only %d bytes", k);
  88           MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
  89           exit (1);
  90         }
  91
  92       MessageBox (NULL, "spawn-test-win32-gui: Will write more to parent",
  93                   lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
  94
  95       n = strlen ("See ya");
  96       if (write (outfd, &n, sizeof (n)) == -1 ||
  97           write (outfd, "See ya", n) == -1)
  98         {
  99           sprintf (buf, "spawn-test-win32-gui: Write: %s", strerror (errno));
 100           MessageBox (NULL, buf, lpszCmdLine, MB_ICONERROR|MB_SYSTEMMODAL);
 101           exit (1);
 102         }
 103     }
 104
 105   Sleep (2000);
 106
 107   MessageBox (NULL, "spawn-test-win32-gui: Done, exiting.",
 108               lpszCmdLine, MB_ICONINFORMATION|MB_SYSTEMMODAL);
 109
 110   return 0;
 111 }