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 * *
32 * Author : Juergen Pfeifer *
33 * *
34 ***************************************************************************/
35
36 #include "form.priv.h"
37
38 MODULE_ID("$Id: fty_int.c,v 1.33 2021/06/17 21:11:08 tom Exp $")
39
40 #if USE_WIDEC_SUPPORT
41 #define isDigit(c) (iswdigit((wint_t)(c)) || isdigit(UChar(c)))
42 #else
43 #define isDigit(c) isdigit(UChar(c))
44 #endif
45
46 #define thisARG integerARG
47
48 typedef struct
49 {
50 int precision;
51 long low;
52 long high;
53 }
54 thisARG;
55
56 typedef struct
57 {
58 int precision;
59 long low;
60 long high;
61 }
62 integerPARM;
63
64 /*---------------------------------------------------------------------------
65 | Facility : libnform
66 | Function : static void *Generic_This_Type( void * arg )
67 |
68 | Description : Allocate structure for integer type argument.
69 |
70 | Return Values : Pointer to argument structure or NULL on error
71 +--------------------------------------------------------------------------*/
72 static void *
Generic_This_Type(void * arg)73 Generic_This_Type(void *arg)
74 {
75 thisARG *argp = (thisARG *)0;
76 thisARG *param = (thisARG *)arg;
77
78 if (param)
79 {
80 argp = typeMalloc(thisARG, 1);
81
82 if (argp)
83 {
84 T((T_CREATE("thisARG %p"), (void *)argp));
85 *argp = *param;
86 }
87 }
88 return (void *)argp;
89 }
90
91 /*---------------------------------------------------------------------------
92 | Facility : libnform
93 | Function : static void *Make_This_Type( va_list * ap )
94 |
95 | Description : Allocate structure for integer type argument.
96 |
97 | Return Values : Pointer to argument structure or NULL on error
98 +--------------------------------------------------------------------------*/
99 static void *
Make_This_Type(va_list * ap)100 Make_This_Type(va_list *ap)
101 {
102 thisARG arg;
103
104 arg.precision = va_arg(*ap, int);
105 arg.low = va_arg(*ap, long);
106 arg.high = va_arg(*ap, long);
107
108 return Generic_This_Type((void *)&arg);
109 }
110
111 /*---------------------------------------------------------------------------
112 | Facility : libnform
113 | Function : static void *Copy_This_Type(const void * argp)
114 |
115 | Description : Copy structure for integer type argument.
116 |
117 | Return Values : Pointer to argument structure or NULL on error.
118 +--------------------------------------------------------------------------*/
119 static void *
Copy_This_Type(const void * argp)120 Copy_This_Type(const void *argp)
121 {
122 const thisARG *ap = (const thisARG *)argp;
123 thisARG *result = (thisARG *)0;
124
125 if (argp)
126 {
127 result = typeMalloc(thisARG, 1);
128
129 if (result)
130 {
131 T((T_CREATE("thisARG %p"), (void *)result));
132 *result = *ap;
133 }
134 }
135 return (void *)result;
136 }
137
138 /*---------------------------------------------------------------------------
139 | Facility : libnform
140 | Function : static void Free_This_Type(void * argp)
141 |
142 | Description : Free structure for integer type argument.
143 |
144 | Return Values : -
145 +--------------------------------------------------------------------------*/
146 static void
Free_This_Type(void * argp)147 Free_This_Type(void *argp)
148 {
149 if (argp)
150 free(argp);
151 }
152
153 /*---------------------------------------------------------------------------
154 | Facility : libnform
155 | Function : static bool Check_This_Field(
156 | FIELD * field,
157 | const void * argp)
158 |
159 | Description : Validate buffer content to be a valid integer value
160 |
161 | Return Values : TRUE - field is valid
162 | FALSE - field is invalid
163 +--------------------------------------------------------------------------*/
164 static bool
Check_This_Field(FIELD * field,const void * argp)165 Check_This_Field(FIELD *field, const void *argp)
166 {
167 const thisARG *argi = (const thisARG *)argp;
168 long low = argi->low;
169 long high = argi->high;
170 int prec = argi->precision;
171 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
172 char *s = (char *)bp;
173 bool result = FALSE;
174
175 while (*bp == ' ')
176 bp++;
177 if (*bp)
178 {
179 if (*bp == '-')
180 bp++;
181 #if USE_WIDEC_SUPPORT
182 if (*bp)
183 {
184 int len;
185 wchar_t *list = _nc_Widen_String((char *)bp, &len);
186
187 if (list != 0)
188 {
189 bool blank = FALSE;
190 int n;
191
192 result = TRUE;
193 for (n = 0; n < len; ++n)
194 {
195 if (blank)
196 {
197 if (list[n] != ' ')
198 {
199 result = FALSE;
200 break;
201 }
202 }
203 else if (list[n] == ' ')
204 {
205 blank = TRUE;
206 }
207 else if (!isDigit(list[n]))
208 {
209 result = FALSE;
210 break;
211 }
212 }
213 free(list);
214 }
215 }
216 #else
217 while (*bp)
218 {
219 if (!isdigit(UChar(*bp)))
220 break;
221 bp++;
222 }
223 while (*bp && *bp == ' ')
224 bp++;
225 result = (*bp == '\0');
226 #endif
227 if (result)
228 {
229 long val = atol(s);
230
231 if (low < high)
232 {
233 if (val < low || val > high)
234 result = FALSE;
235 }
236 if (result)
237 {
238 char buf[100];
239
240 _nc_SPRINTF(buf, _nc_SLIMIT(sizeof(buf))
241 "%.*ld", (prec > 0 ? prec : 0), val);
242 set_field_buffer(field, 0, buf);
243 }
244 }
245 }
246 return (result);
247 }
248
249 /*---------------------------------------------------------------------------
250 | Facility : libnform
251 | Function : static bool Check_This_Character(
252 | int c,
253 | const void * argp)
254 |
255 | Description : Check a character for the integer type.
256 |
257 | Return Values : TRUE - character is valid
258 | FALSE - character is invalid
259 +--------------------------------------------------------------------------*/
260 static bool
Check_This_Character(int c,const void * argp GCC_UNUSED)261 Check_This_Character(int c, const void *argp GCC_UNUSED)
262 {
263 return ((isDigit(UChar(c)) || (c == '-')) ? TRUE : FALSE);
264 }
265
266 static FIELDTYPE typeTHIS =
267 {
268 _HAS_ARGS | _RESIDENT,
269 1, /* this is mutable, so we can't be const */
270 (FIELDTYPE *)0,
271 (FIELDTYPE *)0,
272 Make_This_Type,
273 Copy_This_Type,
274 Free_This_Type,
275 INIT_FT_FUNC(Check_This_Field),
276 INIT_FT_FUNC(Check_This_Character),
277 INIT_FT_FUNC(NULL),
278 INIT_FT_FUNC(NULL),
279 #if NCURSES_INTEROP_FUNCS
280 Generic_This_Type
281 #endif
282 };
283
284 FORM_EXPORT_VAR(FIELDTYPE *) TYPE_INTEGER = &typeTHIS;
285
286 #if NCURSES_INTEROP_FUNCS
287 /* The next routines are to simplify the use of ncurses from
288 programming languages with restrictions on interop with C level
289 constructs (e.g. variable access or va_list + ellipsis constructs)
290 */
291 FORM_EXPORT(FIELDTYPE *)
_nc_TYPE_INTEGER(void)292 _nc_TYPE_INTEGER(void)
293 {
294 return TYPE_INTEGER;
295 }
296 #endif
297
298 /* fty_int.c ends here */
299