/* $OpenBSD: fld_newftyp.c,v 1.2 1998/07/24 02:36:48 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@T-Online.de> 1995,1997 * ****************************************************************************/ #include "form.priv.h" MODULE_ID("$From: fld_newftyp.c,v 1.2 1998/02/11 12:13:44 tom 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 */