1 /****************************************************************************
2 * Copyright 2020,2021 Thomas E. Dickey *
3 * Copyright 1998-2010,2012 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Juergen Pfeifer, 1995,1997 *
32 ****************************************************************************/
33
34 #include "form.priv.h"
35
36 MODULE_ID("$Id: fld_ftlink.c,v 1.18 2021/06/17 21:20:30 tom Exp $")
37
38 /*---------------------------------------------------------------------------
39 | Facility : libnform
40 | Function : FIELDTYPE *link_fieldtype(
41 | FIELDTYPE *type1,
42 | FIELDTYPE *type2)
43 |
44 | Description : Create a new fieldtype built from the two given types.
45 | They are connected by an logical 'OR'.
46 | If an error occurs, errno is set to
47 | E_BAD_ARGUMENT - invalid arguments
48 | E_SYSTEM_ERROR - system error (no memory)
49 |
50 | Return Values : Fieldtype pointer or NULL if error occurred.
51 +--------------------------------------------------------------------------*/
FORM_EXPORT(FIELDTYPE *)52 FORM_EXPORT(FIELDTYPE *)
53 link_fieldtype(FIELDTYPE *type1, FIELDTYPE *type2)
54 {
55 FIELDTYPE *nftyp = (FIELDTYPE *)0;
56
57 T((T_CALLED("link_fieldtype(%p,%p)"), (void *)type1, (void *)type2));
58 if (type1 && type2)
59 {
60 nftyp = typeMalloc(FIELDTYPE, 1);
61
62 if (nftyp)
63 {
64 T((T_CREATE("fieldtype %p"), (void *)nftyp));
65 *nftyp = *_nc_Default_FieldType;
66 SetStatus(nftyp, _LINKED_TYPE);
67 if ((type1->status & _HAS_ARGS) || (type2->status & _HAS_ARGS))
68 SetStatus(nftyp, _HAS_ARGS);
69 if ((type1->status & _HAS_CHOICE) || (type2->status & _HAS_CHOICE))
70 SetStatus(nftyp, _HAS_CHOICE);
71 nftyp->left = type1;
72 nftyp->right = type2;
73 type1->ref++;
74 type2->ref++;
75 }
76 else
77 {
78 SET_ERROR(E_SYSTEM_ERROR);
79 }
80 }
81 else
82 {
83 SET_ERROR(E_BAD_ARGUMENT);
84 }
85 returnFieldType(nftyp);
86 }
87
88 /* fld_ftlink.c ends here */
89