1 /* $OpenBSD: fld_max.c,v 1.7 2023/10/17 09:52:10 nicm Exp $ */
2 /****************************************************************************
3 * Copyright 2019-2020,2021 Thomas E. Dickey *
4 * Copyright 1998-2012,2013 Free Software Foundation, Inc. *
5 * *
6 * Permission is hereby granted, free of charge, to any person obtaining a *
7 * copy of this software and associated documentation files (the *
8 * "Software"), to deal in the Software without restriction, including *
9 * without limitation the rights to use, copy, modify, merge, publish, *
10 * distribute, distribute with modifications, sublicense, and/or sell *
11 * copies of the Software, and to permit persons to whom the Software is *
12 * furnished to do so, subject to the following conditions: *
13 * *
14 * The above copyright notice and this permission notice shall be included *
15 * in all copies or substantial portions of the Software. *
16 * *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * *
25 * Except as contained in this notice, the name(s) of the above copyright *
26 * holders shall not be used in advertising or otherwise to promote the *
27 * sale, use or other dealings in this Software without prior written *
28 * authorization. *
29 ****************************************************************************/
30
31 /****************************************************************************
32 * Author: Juergen Pfeifer, 1995,1997 *
33 ****************************************************************************/
34
35 #include "form.priv.h"
36
37 MODULE_ID("$Id: fld_max.c,v 1.7 2023/10/17 09:52:10 nicm Exp $")
38
39 /*---------------------------------------------------------------------------
40 | Facility : libnform
41 | Function : int set_max_field(FIELD *field, int maxgrow)
42 |
43 | Description : Set the maximum growth for a dynamic field. If maxgrow=0
44 | the field may grow to any possible size.
45 |
46 | Return Values : E_OK - success
47 | E_BAD_ARGUMENT - invalid argument
48 +--------------------------------------------------------------------------*/
FORM_EXPORT(int)49 FORM_EXPORT(int)
50 set_max_field(FIELD *field, int maxgrow)
51 {
52 T((T_CALLED("set_max_field(%p,%d)"), (void *)field, maxgrow));
53
54 if (!field || (maxgrow < 0))
55 RETURN(E_BAD_ARGUMENT);
56 else
57 {
58 bool single_line_field = Single_Line_Field(field);
59
60 if (maxgrow > 0)
61 {
62 if (((single_line_field && (maxgrow < field->dcols)) ||
63 (!single_line_field && (maxgrow < field->drows))) &&
64 !Field_Has_Option(field, O_INPUT_LIMIT))
65 RETURN(E_BAD_ARGUMENT);
66 }
67 field->maxgrow = maxgrow;
68 /* shrink */
69 if (maxgrow > 0 && Field_Has_Option(field, O_INPUT_LIMIT) &&
70 field->dcols > maxgrow)
71 field->dcols = maxgrow;
72 ClrStatus(field, _MAY_GROW);
73 if (!((unsigned)field->opts & O_STATIC))
74 {
75 if ((maxgrow == 0) ||
76 (single_line_field && (field->dcols < maxgrow)) ||
77 (!single_line_field && (field->drows < maxgrow)))
78 SetStatus(field, _MAY_GROW);
79 }
80 }
81 RETURN(E_OK);
82 }
83
84 /* fld_max.c ends here */
85