1 /****************************************************************************
2 * Copyright 2020 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 1.27 2020/02/02 23:34:34 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 if (result)
129 {
130 T((T_CREATE("thisARG %p"), (void *)result));
131 *result = *ap;
132 }
133 }
134 return (void *)result;
135 }
136
137 /*---------------------------------------------------------------------------
138 | Facility : libnform
139 | Function : static void Free_This_Type(void * argp)
140 |
141 | Description : Free structure for integer type argument.
142 |
143 | Return Values : -
144 +--------------------------------------------------------------------------*/
145 static void
Free_This_Type(void * argp)146 Free_This_Type(void *argp)
147 {
148 if (argp)
149 free(argp);
150 }
151
152 /*---------------------------------------------------------------------------
153 | Facility : libnform
154 | Function : static bool Check_This_Field(
155 | FIELD * field,
156 | const void * argp)
157 |
158 | Description : Validate buffer content to be a valid integer value
159 |
160 | Return Values : TRUE - field is valid
161 | FALSE - field is invalid
162 +--------------------------------------------------------------------------*/
163 static bool
Check_This_Field(FIELD * field,const void * argp)164 Check_This_Field(FIELD *field, const void *argp)
165 {
166 const thisARG *argi = (const thisARG *)argp;
167 long low = argi->low;
168 long high = argi->high;
169 int prec = argi->precision;
170 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
171 char *s = (char *)bp;
172 long val;
173 char buf[100];
174 bool result = FALSE;
175
176 while (*bp && *bp == ' ')
177 bp++;
178 if (*bp)
179 {
180 if (*bp == '-')
181 bp++;
182 #if USE_WIDEC_SUPPORT
183 if (*bp)
184 {
185 bool blank = FALSE;
186 int len;
187 int n;
188 wchar_t *list = _nc_Widen_String((char *)bp, &len);
189
190 if (list != 0)
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 val = atol(s);
230 if (low < high)
231 {
232 if (val < low || val > high)
233 result = FALSE;
234 }
235 if (result)
236 {
237 _nc_SPRINTF(buf, _nc_SLIMIT(sizeof(buf))
238 "%.*ld", (prec > 0 ? prec : 0), val);
239 set_field_buffer(field, 0, buf);
240 }
241 }
242 }
243 return (result);
244 }
245
246 /*---------------------------------------------------------------------------
247 | Facility : libnform
248 | Function : static bool Check_This_Character(
249 | int c,
250 | const void * argp)
251 |
252 | Description : Check a character for the integer type.
253 |
254 | Return Values : TRUE - character is valid
255 | FALSE - character is invalid
256 +--------------------------------------------------------------------------*/
257 static bool
Check_This_Character(int c,const void * argp GCC_UNUSED)258 Check_This_Character(int c, const void *argp GCC_UNUSED)
259 {
260 return ((isDigit(UChar(c)) || (c == '-')) ? TRUE : FALSE);
261 }
262
263 static FIELDTYPE typeTHIS =
264 {
265 _HAS_ARGS | _RESIDENT,
266 1, /* this is mutable, so we can't be const */
267 (FIELDTYPE *)0,
268 (FIELDTYPE *)0,
269 Make_This_Type,
270 Copy_This_Type,
271 Free_This_Type,
272 INIT_FT_FUNC(Check_This_Field),
273 INIT_FT_FUNC(Check_This_Character),
274 INIT_FT_FUNC(NULL),
275 INIT_FT_FUNC(NULL),
276 #if NCURSES_INTEROP_FUNCS
277 Generic_This_Type
278 #endif
279 };
280
281 NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_INTEGER = &typeTHIS;
282
283 #if NCURSES_INTEROP_FUNCS
284 /* The next routines are to simplify the use of ncurses from
285 programming languages with restictions on interop with C level
286 constructs (e.g. variable access or va_list + ellipsis constructs)
287 */
288 NCURSES_EXPORT(FIELDTYPE *)
_nc_TYPE_INTEGER(void)289 _nc_TYPE_INTEGER(void)
290 {
291 return TYPE_INTEGER;
292 }
293 #endif
294
295 /* fty_int.c ends here */
296