compiler/alib/checkrexxmsg.c

   1 /*
   2         Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <proto/alib.h>
   9 #include <proto/exec.h>
  10 #include <proto/rexxsyslib.h>
  11 #include <rexx/storage.h>
  12 #include <rexx/errors.h>
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17
  18         BOOL CheckRexxMsg(
  19
  20 /*  SYNOPSIS */
  21         struct RexxMsg * msg)
  22
  23 /*  FUNCTION
  24         Check to see if provided message was generated by the rexx interpreter
  25
  26     INPUTS
  27         msg - The message to check
  28
  29     RESULT
  30         Wether this message is OK.
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39         SetRexxVar(), GetRexxVar()
  40
  41     INTERNALS
  42         This function creates a rexx message that is sent to the AREXX
  43         port with a RXCHECKMSG command.
  44
  45
  46 *****************************************************************************/
  47 {
  48     struct Library *RexxSysBase = NULL;
  49     struct RexxMsg *msg2 = NULL, *msg3;
  50     struct MsgPort *port = NULL, *rexxport;
  51     BOOL retval = FALSE;
  52
  53     RexxSysBase = OpenLibrary("rexxsyslib.library", 0);
  54     if (RexxSysBase == NULL) goto cleanup;
  55
  56     if (!IsRexxMsg(msg)) goto cleanup;
  57     rexxport = FindPort("REXX");
  58     if (rexxport==NULL) goto cleanup;
  59
  60     port = CreateMsgPort();
  61     if (port == NULL) goto cleanup;
  62     msg2 = CreateRexxMsg(port, NULL, NULL);
  63     if (msg2==NULL) goto cleanup;
  64     msg2->rm_Private1 = msg->rm_Private1;
  65     msg2->rm_Private2 = msg->rm_Private2;
  66     msg2->rm_Action = RXCHECKMSG;
  67
  68     PutMsg(rexxport, (struct Message *)msg2);
  69     msg3 = NULL;
  70     while (msg3!=msg2)
  71     {
  72         WaitPort(port);
  73         msg3 = (struct RexxMsg *)GetMsg(port);
  74         if (msg3!=msg2) ReplyMsg((struct Message *)msg3);
  75     }
  76
  77     retval = msg3->rm_Result1==RC_OK;
  78
  79 cleanup:
  80     if (msg2!=NULL) DeleteRexxMsg(msg2);
  81     if (port!=NULL) DeletePort(port);
  82     if (RexxSysBase!=NULL) CloseLibrary(RexxSysBase);
  83     return retval;
  84 } /* CheckRexxMsg */