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/****************************************************************************
* 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("$Id$")
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 occurred
+--------------------------------------------------------------------------*/
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 */
|
