126 lines
5.4 KiB
C
126 lines
5.4 KiB
C
/****************************************************************************
|
||
* 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 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 */
|