fld_ftlink.c revision 1.6 
1/*	$OpenBSD: fld_ftlink.c,v 1.6 2015/01/23 22:48:51 krw Exp $	*/
2/****************************************************************************
3 * Copyright (c) 1998-2004,2007 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
36MODULE_ID("$Id: fld_ftlink.c,v 1.6 2015/01/23 22:48:51 krw 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+--------------------------------------------------------------------------*/
52NCURSES_EXPORT(FIELDTYPE *)
53link_fieldtype(FIELDTYPE *type1, FIELDTYPE *type2)
54{
55  FIELDTYPE *nftyp = (FIELDTYPE *)0;
56
57  T((T_CALLED("link_fieldtype(%p,%p)"), type1, type2));
58  if (type1 && type2)
59    {
60      nftyp = typeMalloc(FIELDTYPE, 1);
61
62      if (nftyp)
63	{
64	  T((T_CREATE("fieldtype %p"), nftyp));
65	  *nftyp = *_nc_Default_FieldType;
66	  nftyp->status |= _LINKED_TYPE;
67	  if ((type1->status & _HAS_ARGS) || (type2->status & _HAS_ARGS))
68	    nftyp->status |= _HAS_ARGS;
69	  if ((type1->status & _HAS_CHOICE) || (type2->status & _HAS_CHOICE))
70	    nftyp->status |= _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