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/* $OpenBSD: fld_arg.c,v 1.3 1999/05/17 03:04:09 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* 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: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 *
****************************************************************************/
#include "form.priv.h"
MODULE_ID("$From: fld_arg.c,v 1.4 1999/05/16 17:16:04 juergen Exp $")
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : int set_fieldtype_arg(
| FIELDTYPE *typ,
| void * (* const make_arg)(va_list *),
| void * (* const copy_arg)(const void *),
| void (* const free_arg)(void *) )
|
| Description : Connects to the type additional arguments necessary
| for a set_field_type call. The various function pointer
| arguments are:
| make_arg : allocates a structure for the field
| specific parameters.
| copy_arg : duplicate the structure created by
| make_arg
| free_arg : Release the memory allocated by make_arg
| or copy_arg
|
| At least make_arg must be non-NULL.
| You may pass NULL for copy_arg and free_arg if your
| make_arg function doesn't allocate memory and your
| arg fits into the storage for a (void*).
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - invalid argument
+--------------------------------------------------------------------------*/
int set_fieldtype_arg(FIELDTYPE * typ,
void * (* const make_arg)(va_list *),
void * (* const copy_arg)(const void *),
void (* const free_arg)(void *))
{
if ( !typ || !make_arg )
RETURN(E_BAD_ARGUMENT);
typ->status |= _HAS_ARGS;
typ->makearg = make_arg;
typ->copyarg = copy_arg;
typ->freearg = free_arg;
RETURN(E_OK);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : void *field_arg(const FIELD *field)
|
| Description : Retrieve pointer to the fields argument structure.
|
| Return Values : Pointer to structure or NULL if none is defined.
+--------------------------------------------------------------------------*/
void *field_arg(const FIELD * field)
{
return Normalize_Field(field)->arg;
}
/* fld_arg.c ends here */
|
