1 /****************************************************************************
2 * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
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26 * authorization. *
27 ****************************************************************************/
28
29 /***************************************************************************
30 * *
31 * Author : Juergen Pfeifer *
32 * *
33 ***************************************************************************/
34
35 #include "form.priv.h"
36
37 MODULE_ID("$Id: fty_int.c,v 1.25 2010/01/23 21:14:36 tom Exp $")
38
39 #if USE_WIDEC_SUPPORT
40 #define isDigit(c) (iswdigit((wint_t)(c)) || isdigit(UChar(c)))
41 #else
42 #define isDigit(c) isdigit(UChar(c))
43 #endif
44
45 #define thisARG integerARG
46
47 typedef struct
48 {
49 int precision;
50 long low;
51 long high;
52 }
53 thisARG;
54
55 typedef struct
56 {
57 int precision;
58 long low;
59 long high;
60 }
61 integerPARM;
62
63 /*---------------------------------------------------------------------------
64 | Facility : libnform
65 | Function : static void *Generic_This_Type( void * arg )
66 |
67 | Description : Allocate structure for integer type argument.
68 |
69 | Return Values : Pointer to argument structure or NULL on error
70 +--------------------------------------------------------------------------*/
71 static void *
Generic_This_Type(void * arg)72 Generic_This_Type(void *arg)
73 {
74 thisARG *argp = (thisARG *) 0;
75 thisARG *param = (thisARG *) arg;
76
77 if (param)
78 {
79 argp = typeMalloc(thisARG, 1);
80
81 if (argp)
82 {
83 T((T_CREATE("thisARG %p"), (void *)argp));
84 *argp = *param;
85 }
86 }
87 return (void *)argp;
88 }
89
90 /*---------------------------------------------------------------------------
91 | Facility : libnform
92 | Function : static void *Make_This_Type( va_list * ap )
93 |
94 | Description : Allocate structure for integer type argument.
95 |
96 | Return Values : Pointer to argument structure or NULL on error
97 +--------------------------------------------------------------------------*/
98 static void *
Make_This_Type(va_list * ap)99 Make_This_Type(va_list *ap)
100 {
101 thisARG arg;
102
103 arg.precision = va_arg(*ap, int);
104 arg.low = va_arg(*ap, long);
105 arg.high = va_arg(*ap, long);
106
107 return Generic_This_Type((void *)&arg);
108 }
109
110 /*---------------------------------------------------------------------------
111 | Facility : libnform
112 | Function : static void *Copy_This_Type(const void * argp)
113 |
114 | Description : Copy structure for integer type argument.
115 |
116 | Return Values : Pointer to argument structure or NULL on error.
117 +--------------------------------------------------------------------------*/
118 static void *
Copy_This_Type(const void * argp)119 Copy_This_Type(const void *argp)
120 {
121 const thisARG *ap = (const thisARG *)argp;
122 thisARG *result = (thisARG *) 0;
123
124 if (argp)
125 {
126 result = typeMalloc(thisARG, 1);
127 if (result)
128 {
129 T((T_CREATE("thisARG %p"), (void *)result));
130 *result = *ap;
131 }
132 }
133 return (void *)result;
134 }
135
136 /*---------------------------------------------------------------------------
137 | Facility : libnform
138 | Function : static void Free_This_Type(void * argp)
139 |
140 | Description : Free structure for integer type argument.
141 |
142 | Return Values : -
143 +--------------------------------------------------------------------------*/
144 static void
Free_This_Type(void * argp)145 Free_This_Type(void *argp)
146 {
147 if (argp)
148 free(argp);
149 }
150
151 /*---------------------------------------------------------------------------
152 | Facility : libnform
153 | Function : static bool Check_This_Field(
154 | FIELD * field,
155 | const void * argp)
156 |
157 | Description : Validate buffer content to be a valid integer value
158 |
159 | Return Values : TRUE - field is valid
160 | FALSE - field is invalid
161 +--------------------------------------------------------------------------*/
162 static bool
Check_This_Field(FIELD * field,const void * argp)163 Check_This_Field(FIELD *field, const void *argp)
164 {
165 const thisARG *argi = (const thisARG *)argp;
166 long low = argi->low;
167 long high = argi->high;
168 int prec = argi->precision;
169 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
170 char *s = (char *)bp;
171 long val;
172 char buf[100];
173 bool result = FALSE;
174
175 while (*bp && *bp == ' ')
176 bp++;
177 if (*bp)
178 {
179 if (*bp == '-')
180 bp++;
181 #if USE_WIDEC_SUPPORT
182 if (*bp)
183 {
184 bool blank = FALSE;
185 int len;
186 int n;
187 wchar_t *list = _nc_Widen_String((char *)bp, &len);
188
189 if (list != 0)
190 {
191 result = TRUE;
192 for (n = 0; n < len; ++n)
193 {
194 if (blank)
195 {
196 if (list[n] != ' ')
197 {
198 result = FALSE;
199 break;
200 }
201 }
202 else if (list[n] == ' ')
203 {
204 blank = TRUE;
205 }
206 else if (!isDigit(list[n]))
207 {
208 result = FALSE;
209 break;
210 }
211 }
212 free(list);
213 }
214 }
215 #else
216 while (*bp)
217 {
218 if (!isdigit(UChar(*bp)))
219 break;
220 bp++;
221 }
222 while (*bp && *bp == ' ')
223 bp++;
224 result = (*bp == '\0');
225 #endif
226 if (result)
227 {
228 val = atol(s);
229 if (low < high)
230 {
231 if (val < low || val > high)
232 result = FALSE;
233 }
234 if (result)
235 {
236 sprintf(buf, "%.*ld", (prec > 0 ? prec : 0), val);
237 set_field_buffer(field, 0, buf);
238 }
239 }
240 }
241 return (result);
242 }
243
244 /*---------------------------------------------------------------------------
245 | Facility : libnform
246 | Function : static bool Check_This_Character(
247 | int c,
248 | const void * argp)
249 |
250 | Description : Check a character for the integer type.
251 |
252 | Return Values : TRUE - character is valid
253 | FALSE - character is invalid
254 +--------------------------------------------------------------------------*/
255 static bool
Check_This_Character(int c,const void * argp GCC_UNUSED)256 Check_This_Character(int c, const void *argp GCC_UNUSED)
257 {
258 return ((isDigit(UChar(c)) || (c == '-')) ? TRUE : FALSE);
259 }
260
261 static FIELDTYPE typeTHIS =
262 {
263 _HAS_ARGS | _RESIDENT,
264 1, /* this is mutable, so we can't be const */
265 (FIELDTYPE *)0,
266 (FIELDTYPE *)0,
267 Make_This_Type,
268 Copy_This_Type,
269 Free_This_Type,
270 INIT_FT_FUNC(Check_This_Field),
271 INIT_FT_FUNC(Check_This_Character),
272 INIT_FT_FUNC(NULL),
273 INIT_FT_FUNC(NULL),
274 #if NCURSES_INTEROP_FUNCS
275 Generic_This_Type
276 #endif
277 };
278
279 NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_INTEGER = &typeTHIS;
280
281 #if NCURSES_INTEROP_FUNCS
282 /* The next routines are to simplify the use of ncurses from
283 programming languages with restictions on interop with C level
284 constructs (e.g. variable access or va_list + ellipsis constructs)
285 */
286 NCURSES_EXPORT(FIELDTYPE *)
_nc_TYPE_INTEGER(void)287 _nc_TYPE_INTEGER(void)
288 {
289 return TYPE_INTEGER;
290 }
291 #endif
292
293 /* fty_int.c ends here */
294