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1/* $OpenBSD: fty_alpha.c,v 1.10 2023/10/17 09:52:10 nicm Exp $ */
2/****************************************************************************
3 * Copyright 2020 Thomas E. Dickey *
4 * Copyright 1998-2009,2010 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* *
33* Author : Juergen Pfeifer *
34* *
35***************************************************************************/
36
37#include "form.priv.h"
38
39MODULE_ID("$Id: fty_alpha.c,v 1.10 2023/10/17 09:52:10 nicm Exp $")
40
41#define thisARG alphaARG
42
43typedef struct
44 {
45 int width;
46 }
47thisARG;
48
49/*---------------------------------------------------------------------------
50| Facility : libnform
51| Function : static void *Generic_This_Type(va_list *ap)
52|
53| Description : Allocate structure for alpha type argument.
54|
55| Return Values : Pointer to argument structure or NULL on error
56+--------------------------------------------------------------------------*/
57static void *
58Generic_This_Type(void *arg)
59{
60 thisARG *argp = (thisARG *)0;
61
62 if (arg)
63 {
64 argp = typeMalloc(thisARG, 1);
65
66 if (argp)
67 {
68 T((T_CREATE("thisARG %p"), (void *)argp));
69 argp->width = *((int *)arg);
70 }
71 }
72 return ((void *)argp);
73}
74
75/*---------------------------------------------------------------------------
76| Facility : libnform
77| Function : static void *Make_This_Type(va_list *ap)
78|
79| Description : Allocate structure for alpha type argument.
80|
81| Return Values : Pointer to argument structure or NULL on error
82+--------------------------------------------------------------------------*/
83static void *
84Make_This_Type(va_list *ap)
85{
86 int w = va_arg(*ap, int);
87
88 return Generic_This_Type((void *)&w);
89}
90
91/*---------------------------------------------------------------------------
92| Facility : libnform
93| Function : static void *Copy_This_Type(const void * argp)
94|
95| Description : Copy structure for alpha type argument.
96|
97| Return Values : Pointer to argument structure or NULL on error.
98+--------------------------------------------------------------------------*/
99static void *
100Copy_This_Type(const void *argp)
101{
102 const thisARG *ap = (const thisARG *)argp;
103 thisARG *result = typeMalloc(thisARG, 1);
104
105 if (result)
106 {
107 T((T_CREATE("thisARG %p"), (void *)result));
108 *result = *ap;
109 }
110
111 return ((void *)result);
112}
113
114/*---------------------------------------------------------------------------
115| Facility : libnform
116| Function : static void Free_This_Type(void *argp)
117|
118| Description : Free structure for alpha type argument.
119|
120| Return Values : -
121+--------------------------------------------------------------------------*/
122static void
123Free_This_Type(void *argp)
124{
125 if (argp)
126 free(argp);
127}
128
129/*---------------------------------------------------------------------------
130| Facility : libnform
131| Function : static bool Check_This_Character(
132| int c,
133| const void *argp)
134|
135| Description : Check a character for the alpha type.
136|
137| Return Values : TRUE - character is valid
138| FALSE - character is invalid
139+--------------------------------------------------------------------------*/
140static bool
141Check_This_Character(int c, const void *argp GCC_UNUSED)
142{
143#if USE_WIDEC_SUPPORT
144 if (iswalpha((wint_t)c))
145 return TRUE;
146#endif
147 return (isalpha(UChar(c)) ? TRUE : FALSE);
148}
149
150/*---------------------------------------------------------------------------
151| Facility : libnform
152| Function : static bool Check_This_Field(
153| FIELD *field,
154| const void *argp)
155|
156| Description : Validate buffer content to be a valid alpha value
157|
158| Return Values : TRUE - field is valid
159| FALSE - field is invalid
160+--------------------------------------------------------------------------*/
161static bool
162Check_This_Field(FIELD *field, const void *argp)
163{
164 int width = ((const thisARG *)argp)->width;
165 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
166 bool result = (width < 0);
167
168 Check_CTYPE_Field(result, bp, width, Check_This_Character);
169 return (result);
170}
171
172static FIELDTYPE typeTHIS =
173{
174 _HAS_ARGS | _RESIDENT,
175 1, /* this is mutable, so we can't be const */
176 (FIELDTYPE *)0,
177 (FIELDTYPE *)0,
178 Make_This_Type,
179 Copy_This_Type,
180 Free_This_Type,
181 INIT_FT_FUNC(Check_This_Field),
182 INIT_FT_FUNC(Check_This_Character),
183 INIT_FT_FUNC(NULL),
184 INIT_FT_FUNC(NULL),
185#if NCURSES_INTEROP_FUNCS
186 Generic_This_Type
187#endif
188};
189
190FORM_EXPORT_VAR(FIELDTYPE *) TYPE_ALPHA = &typeTHIS;
191
192#if NCURSES_INTEROP_FUNCS
193/* The next routines are to simplify the use of ncurses from
194 programming languages with restrictions on interop with C level
195 constructs (e.g. variable access or va_list + ellipsis constructs)
196*/
197FORM_EXPORT(FIELDTYPE *)
198_nc_TYPE_ALPHA(void)
199{
200 return TYPE_ALPHA;
201}
202#endif
203
204/* fty_alpha.c ends here */