OpenBSD-4.6/lib/libform/frm_adabind.c

/*	$OpenBSD: frm_adabind.c,v 1.2 1998/07/24 02:37:24 millert Exp $	*/

/****************************************************************************
 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
 *                                                                          *
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 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
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 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
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 * in all copies or substantial portions of the Software.                   *
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/****************************************************************************
 *   Author: Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> 1995,1997        *
 ****************************************************************************/

/***************************************************************************
* Module frm_adabind.c                                                     *
* Helper routines to ease the implementation of an Ada95 binding to        *
* ncurses. For details and copyright of the binding see the ../Ada95       *
* subdirectory.                                                            *
***************************************************************************/
#include "form.priv.h"

MODULE_ID("$From: frm_adabind.c,v 1.5 1998/02/11 12:13:43 tom Exp $")

/* Prototypes for the functions in this module */
void   _nc_ada_normalize_field_opts (int *opt);
void   _nc_ada_normalize_form_opts (int *opt);
void*  _nc_ada_getvarg(va_list *);
FIELD* _nc_get_field(const FORM*, int);


void _nc_ada_normalize_field_opts (int *opt)
{
  *opt = ALL_FIELD_OPTS & (*opt);
}

void _nc_ada_normalize_form_opts (int *opt)
{
  *opt = ALL_FORM_OPTS & (*opt);
}


/*  This tiny stub helps us to get a void pointer from an argument list.
//  The mechanism for libform to handle arguments to field types uses
//  unfortunately functions with variable argument lists. In the Ada95
//  binding we replace this by a mechanism that only uses one argument
//  that is a pointer to a record describing all the specifics of an
//  user defined field type. So we need only this simple generic
//  procedure to get the pointer from the arglist.
*/
void *_nc_ada_getvarg(va_list *ap)
{
  return va_arg(*ap,void*);
}

FIELD* _nc_get_field(const FORM* frm, int idx) {
  if (frm && frm->field && idx>=0 && (idx<frm->maxfield))
    {
      return frm->field[idx];
    }
  else
    return (FIELD*)0;
}