1 /****************************************************************************
2 * Copyright 2020 Thomas E. Dickey *
3 * Copyright 1998-2009,2010 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 * *
32 * Author : Juergen Pfeifer *
33 * *
34 ***************************************************************************/
35
36 #include "form.priv.h"
37
38 MODULE_ID("$Id: fty_alpha.c,v 1.31 2020/12/12 01:15:37 tom Exp $")
39
40 #define thisARG alphaARG
41
42 typedef struct
43 {
44 int width;
45 }
46 thisARG;
47
48 /*---------------------------------------------------------------------------
49 | Facility : libnform
50 | Function : static void *Generic_This_Type(va_list *ap)
51 |
52 | Description : Allocate structure for alpha type argument.
53 |
54 | Return Values : Pointer to argument structure or NULL on error
55 +--------------------------------------------------------------------------*/
56 static void *
Generic_This_Type(void * arg)57 Generic_This_Type(void *arg)
58 {
59 thisARG *argp = (thisARG *)0;
60
61 if (arg)
62 {
63 argp = typeMalloc(thisARG, 1);
64
65 if (argp)
66 {
67 T((T_CREATE("thisARG %p"), (void *)argp));
68 argp->width = *((int *)arg);
69 }
70 }
71 return ((void *)argp);
72 }
73
74 /*---------------------------------------------------------------------------
75 | Facility : libnform
76 | Function : static void *Make_This_Type(va_list *ap)
77 |
78 | Description : Allocate structure for alpha type argument.
79 |
80 | Return Values : Pointer to argument structure or NULL on error
81 +--------------------------------------------------------------------------*/
82 static void *
Make_This_Type(va_list * ap)83 Make_This_Type(va_list *ap)
84 {
85 int w = va_arg(*ap, int);
86
87 return Generic_This_Type((void *)&w);
88 }
89
90 /*---------------------------------------------------------------------------
91 | Facility : libnform
92 | Function : static void *Copy_This_Type(const void * argp)
93 |
94 | Description : Copy structure for alpha type argument.
95 |
96 | Return Values : Pointer to argument structure or NULL on error.
97 +--------------------------------------------------------------------------*/
98 static void *
Copy_This_Type(const void * argp)99 Copy_This_Type(const void *argp)
100 {
101 const thisARG *ap = (const thisARG *)argp;
102 thisARG *result = typeMalloc(thisARG, 1);
103
104 if (result)
105 {
106 T((T_CREATE("thisARG %p"), (void *)result));
107 *result = *ap;
108 }
109
110 return ((void *)result);
111 }
112
113 /*---------------------------------------------------------------------------
114 | Facility : libnform
115 | Function : static void Free_This_Type(void *argp)
116 |
117 | Description : Free structure for alpha type argument.
118 |
119 | Return Values : -
120 +--------------------------------------------------------------------------*/
121 static void
Free_This_Type(void * argp)122 Free_This_Type(void *argp)
123 {
124 if (argp)
125 free(argp);
126 }
127
128 /*---------------------------------------------------------------------------
129 | Facility : libnform
130 | Function : static bool Check_This_Character(
131 | int c,
132 | const void *argp)
133 |
134 | Description : Check a character for the alpha type.
135 |
136 | Return Values : TRUE - character is valid
137 | FALSE - character is invalid
138 +--------------------------------------------------------------------------*/
139 static bool
Check_This_Character(int c,const void * argp GCC_UNUSED)140 Check_This_Character(int c, const void *argp GCC_UNUSED)
141 {
142 #if USE_WIDEC_SUPPORT
143 if (iswalpha((wint_t)c))
144 return TRUE;
145 #endif
146 return (isalpha(UChar(c)) ? TRUE : FALSE);
147 }
148
149 /*---------------------------------------------------------------------------
150 | Facility : libnform
151 | Function : static bool Check_This_Field(
152 | FIELD *field,
153 | const void *argp)
154 |
155 | Description : Validate buffer content to be a valid alpha value
156 |
157 | Return Values : TRUE - field is valid
158 | FALSE - field is invalid
159 +--------------------------------------------------------------------------*/
160 static bool
Check_This_Field(FIELD * field,const void * argp)161 Check_This_Field(FIELD *field, const void *argp)
162 {
163 int width = ((const thisARG *)argp)->width;
164 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
165 bool result = (width < 0);
166
167 Check_CTYPE_Field(result, bp, width, Check_This_Character);
168 return (result);
169 }
170
171 static FIELDTYPE typeTHIS =
172 {
173 _HAS_ARGS | _RESIDENT,
174 1, /* this is mutable, so we can't be const */
175 (FIELDTYPE *)0,
176 (FIELDTYPE *)0,
177 Make_This_Type,
178 Copy_This_Type,
179 Free_This_Type,
180 INIT_FT_FUNC(Check_This_Field),
181 INIT_FT_FUNC(Check_This_Character),
182 INIT_FT_FUNC(NULL),
183 INIT_FT_FUNC(NULL),
184 #if NCURSES_INTEROP_FUNCS
185 Generic_This_Type
186 #endif
187 };
188
189 FORM_EXPORT_VAR(FIELDTYPE *) TYPE_ALPHA = &typeTHIS;
190
191 #if NCURSES_INTEROP_FUNCS
192 /* The next routines are to simplify the use of ncurses from
193 programming languages with restrictions on interop with C level
194 constructs (e.g. variable access or va_list + ellipsis constructs)
195 */
196 FORM_EXPORT(FIELDTYPE *)
_nc_TYPE_ALPHA(void)197 _nc_TYPE_ALPHA(void)
198 {
199 return TYPE_ALPHA;
200 }
201 #endif
202
203 /* fty_alpha.c ends here */
204