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- /****************************************************************************
- * Copyright (c) 1998,2000 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, 1995,1997 *
- * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en *
- ****************************************************************************/
-
- #include "form.priv.h"
-
- MODULE_ID("$Id: fld_newftyp.c,v 1.7 2002/07/06 15:33:27 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 */
- };
-
- NCURSES_EXPORT_VAR(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
- +--------------------------------------------------------------------------*/
- NCURSES_EXPORT(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
- +--------------------------------------------------------------------------*/
- NCURSES_EXPORT(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 */
-