1 /****************************************************************************
2 * Copyright (c) 1998,2000 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Juergen Pfeifer, 1995,1997 *
31 * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en *
32 ****************************************************************************/
34 #include "form.priv.h"
36 MODULE_ID("$Id: fld_newftyp.c,v 1.7 2002/07/06 15:33:27 juergen Exp $")
38 static FIELDTYPE const default_fieldtype = {
40 0L, /* reference count */
41 (FIELDTYPE *)0, /* pointer to left operand */
42 (FIELDTYPE *)0, /* pointer to right operand */
43 NULL, /* makearg function */
44 NULL, /* copyarg function */
45 NULL, /* freearg function */
46 NULL, /* field validation function */
47 NULL, /* Character check function */
48 NULL, /* enumerate next function */
49 NULL /* enumerate previous function */
52 NCURSES_EXPORT_VAR(const FIELDTYPE*) _nc_Default_FieldType = &default_fieldtype;
54 /*---------------------------------------------------------------------------
56 | Function : FIELDTYPE *new_fieldtype(
57 | bool (* const field_check)(FIELD *,const void *),
58 | bool (* const char_check) (int, const void *) )
60 | Description : Create a new fieldtype. The application programmer must
61 | write a field_check and a char_check function and give
62 | them as input to this call.
63 | If an error occurs, errno is set to
64 | E_BAD_ARGUMENT - invalid arguments
65 | E_SYSTEM_ERROR - system error (no memory)
67 | Return Values : Fieldtype pointer or NULL if error occured
68 +--------------------------------------------------------------------------*/
69 NCURSES_EXPORT(FIELDTYPE *)
71 bool (* const field_check)(FIELD *,const void *),
72 bool (* const char_check) (int,const void *) )
74 FIELDTYPE *nftyp = (FIELDTYPE *)0;
76 if ( (field_check) || (char_check) )
78 nftyp = (FIELDTYPE *)malloc(sizeof(FIELDTYPE));
81 *nftyp = default_fieldtype;
82 nftyp->fcheck = field_check;
83 nftyp->ccheck = char_check;
87 SET_ERROR( E_SYSTEM_ERROR );
92 SET_ERROR( E_BAD_ARGUMENT );
97 /*---------------------------------------------------------------------------
99 | Function : int free_fieldtype(FIELDTYPE *typ)
101 | Description : Release the memory associated with this fieldtype.
103 | Return Values : E_OK - success
104 | E_CONNECTED - there are fields referencing the type
105 | E_BAD_ARGUMENT - invalid fieldtype pointer
106 +--------------------------------------------------------------------------*/
108 free_fieldtype (FIELDTYPE *typ)
111 RETURN(E_BAD_ARGUMENT);
116 if (typ->status & _RESIDENT)
119 if (typ->status & _LINKED_TYPE)
121 if (typ->left ) typ->left->ref--;
122 if (typ->right) typ->right->ref--;
128 /* fld_newftyp.c ends here */