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|
/* $OpenBSD: fld_newftyp.c,v 1.1 1997/12/03 05:39:56 millert Exp $ */
/*-----------------------------------------------------------------------------+
| The ncurses form library is Copyright (C) 1995-1997 |
| by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> |
| All Rights Reserved. |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee is hereby granted, provided |
| that the above copyright notice appear in all copies and that both that |
| copyright notice and this permission notice appear in supporting |
| documentation, and that the name of the above listed copyright holder(s) not |
| be used in advertising or publicity pertaining to distribution of the |
| software without specific, written prior permission. |
| |
| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- |
| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR |
| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH |
| THE USE OR PERFORMANCE OF THIS SOFTWARE. |
+-----------------------------------------------------------------------------*/
#include "form.priv.h"
MODULE_ID("Id: fld_newftyp.c,v 1.1 1997/10/21 13:24:19 juergen Exp $")
static FIELDTYPE const default_fieldtype = {
0, /* status */
0L, /* reference count */
(FIELDTYPE *)0, /* pointer to left operand */
(FIELDTYPE *)0, /* pointer to right operand */
NULL, /* makearg function */
NULL, /* copyarg function */
NULL, /* freearg function */
NULL, /* field validation function */
NULL, /* Character check function */
NULL, /* enumerate next function */
NULL /* enumerate previous function */
};
const FIELDTYPE* _nc_Default_FieldType = &default_fieldtype;
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : FIELDTYPE *new_fieldtype(
| bool (* const field_check)(FIELD *,const void *),
| bool (* const char_check) (int, const void *) )
|
| Description : Create a new fieldtype. The application programmer must
| write a field_check and a char_check function and give
| them as input to this call.
| If an error occurs, errno is set to
| E_BAD_ARGUMENT - invalid arguments
| E_SYSTEM_ERROR - system error (no memory)
|
| Return Values : Fieldtype pointer or NULL if error occured
+--------------------------------------------------------------------------*/
FIELDTYPE *new_fieldtype(
bool (* const field_check)(FIELD *,const void *),
bool (* const char_check) (int,const void *) )
{
FIELDTYPE *nftyp = (FIELDTYPE *)0;
if ( (field_check) && (char_check) )
{
nftyp = (FIELDTYPE *)malloc(sizeof(FIELDTYPE));
if (nftyp)
{
*nftyp = default_fieldtype;
nftyp->fcheck = field_check;
nftyp->ccheck = char_check;
}
else
{
SET_ERROR( E_SYSTEM_ERROR );
}
}
else
{
SET_ERROR( E_BAD_ARGUMENT );
}
return nftyp;
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : int free_fieldtype(FIELDTYPE *typ)
|
| Description : Release the memory associated with this fieldtype.
|
| Return Values : E_OK - success
| E_CONNECTED - there are fields referencing the type
| E_BAD_ARGUMENT - invalid fieldtype pointer
+--------------------------------------------------------------------------*/
int free_fieldtype(FIELDTYPE *typ)
{
if (!typ)
RETURN(E_BAD_ARGUMENT);
if (typ->ref!=0)
RETURN(E_CONNECTED);
if (typ->status & _RESIDENT)
RETURN(E_CONNECTED);
if (typ->status & _LINKED_TYPE)
{
if (typ->left ) typ->left->ref--;
if (typ->right) typ->right->ref--;
}
free(typ);
RETURN(E_OK);
}
/* fld_newftyp.c ends here */
|
