compiler/alib/setrexxvar.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 #include <string.h>
  15
  16 /*****************************************************************************
  17
  18     NAME */
  19         LONG SetRexxVar(
  20
  21 /*  SYNOPSIS */
  22         struct RexxMsg *msg,
  23         CONST_STRPTR varname,
  24         char *value,
  25         ULONG length)
  26
  27 /*  FUNCTION
  28         Set a the value of the name rexx variable.
  29
  30     INPUTS
  31         msg - A rexx message generated from a running rexx script
  32         varname - The name of the variable to set the value
  33         value - a pointer to the beginning of the value to set
  34         length - the length of the value argument
  35
  36     RESULT
  37         0 when succes, otherwise a rexx error value is returned.
  38
  39     NOTES
  40
  41     EXAMPLE
  42
  43     BUGS
  44
  45     SEE ALSO
  46         CheckRexxMsg(), GetRexxVar()
  47
  48     INTERNALS
  49         This function creates a rexx message that is sent to the AREXX
  50         port with a RXSETVAR command.
  51
  52
  53 *****************************************************************************/
  54 {
  55     struct Library *RexxSysBase = NULL;
  56     struct RexxMsg *msg2 = NULL, *msg3;
  57     struct MsgPort *port = NULL, *rexxport;
  58     LONG retval = ERR10_003;
  59
  60     RexxSysBase = OpenLibrary("rexxsyslib.library", 0);
  61     if (RexxSysBase==NULL) goto cleanup;
  62
  63     if (!IsRexxMsg(msg))
  64     {
  65         retval = ERR10_010;
  66         goto cleanup;
  67     }
  68
  69     rexxport = FindPort("REXX");
  70     if (rexxport==NULL)
  71     {
  72         retval = ERR10_013;
  73         goto cleanup;
  74     }
  75
  76     port = CreateMsgPort();
  77     if (port == NULL) goto cleanup;
  78     msg2 = CreateRexxMsg(port, NULL, NULL);
  79     if (msg2==NULL) goto cleanup;
  80     msg2->rm_Private1 = msg->rm_Private1;
  81     msg2->rm_Private2 = msg->rm_Private2;
  82     msg2->rm_Action = RXSETVAR | 2;
  83     msg2->rm_Args[0] = (IPTR)CreateArgstring(varname, strlen(varname));
  84     msg2->rm_Args[1] = (IPTR)CreateArgstring(value, length);
  85     if (msg2->rm_Args[0]==0 || msg2->rm_Args[1]==0) goto cleanup;
  86
  87     PutMsg(rexxport, (struct Message *)msg2);
  88     msg3 = NULL;
  89     while (msg3!=msg2)
  90     {
  91         WaitPort(port);
  92         msg3 = (struct RexxMsg *)GetMsg(port);
  93         if (msg3!=msg2) ReplyMsg((struct Message *)msg3);
  94     }
  95
  96     if (msg3->rm_Result1==RC_OK) retval = 0;
  97     else retval = (LONG)msg3->rm_Result2;
  98
  99 cleanup:
 100     if (msg2!=NULL)
 101     {
 102         if (msg2->rm_Args[0]!=0) DeleteArgstring((UBYTE *)msg2->rm_Args[0]);
 103         if (msg2->rm_Args[1]!=0) DeleteArgstring((UBYTE *)msg2->rm_Args[1]);
 104         DeleteRexxMsg(msg2);
 105     }
 106     if (port!=NULL) DeletePort(port);
 107     if (RexxSysBase!=NULL) CloseLibrary(RexxSysBase);
 108
 109     return retval;
 110 } /* SetRexxVar */