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 1.31 2020/12/12 01:15:37 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 * 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 * 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 * 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 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 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 long val; 174 char buf[100]; 175 bool result = FALSE; 176 177 while (*bp && *bp == ' ') 178 bp++; 179 if (*bp) 180 { 181 if (*bp == '-') 182 bp++; 183 #if USE_WIDEC_SUPPORT 184 if (*bp) 185 { 186 bool blank = FALSE; 187 int len; 188 int n; 189 wchar_t *list = _nc_Widen_String((char *)bp, &len); 190 191 if (list != 0) 192 { 193 result = TRUE; 194 for (n = 0; n < len; ++n) 195 { 196 if (blank) 197 { 198 if (list[n] != ' ') 199 { 200 result = FALSE; 201 break; 202 } 203 } 204 else if (list[n] == ' ') 205 { 206 blank = TRUE; 207 } 208 else if (!isDigit(list[n])) 209 { 210 result = FALSE; 211 break; 212 } 213 } 214 free(list); 215 } 216 } 217 #else 218 while (*bp) 219 { 220 if (!isdigit(UChar(*bp))) 221 break; 222 bp++; 223 } 224 while (*bp && *bp == ' ') 225 bp++; 226 result = (*bp == '\0'); 227 #endif 228 if (result) 229 { 230 val = atol(s); 231 if (low < high) 232 { 233 if (val < low || val > high) 234 result = FALSE; 235 } 236 if (result) 237 { 238 _nc_SPRINTF(buf, _nc_SLIMIT(sizeof(buf)) 239 "%.*ld", (prec > 0 ? prec : 0), val); 240 set_field_buffer(field, 0, buf); 241 } 242 } 243 } 244 return (result); 245 } 246 247 /*--------------------------------------------------------------------------- 248 | Facility : libnform 249 | Function : static bool Check_This_Character( 250 | int c, 251 | const void * argp) 252 | 253 | Description : Check a character for the integer type. 254 | 255 | Return Values : TRUE - character is valid 256 | FALSE - character is invalid 257 +--------------------------------------------------------------------------*/ 258 static bool 259 Check_This_Character(int c, const void *argp GCC_UNUSED) 260 { 261 return ((isDigit(UChar(c)) || (c == '-')) ? TRUE : FALSE); 262 } 263 264 static FIELDTYPE typeTHIS = 265 { 266 _HAS_ARGS | _RESIDENT, 267 1, /* this is mutable, so we can't be const */ 268 (FIELDTYPE *)0, 269 (FIELDTYPE *)0, 270 Make_This_Type, 271 Copy_This_Type, 272 Free_This_Type, 273 INIT_FT_FUNC(Check_This_Field), 274 INIT_FT_FUNC(Check_This_Character), 275 INIT_FT_FUNC(NULL), 276 INIT_FT_FUNC(NULL), 277 #if NCURSES_INTEROP_FUNCS 278 Generic_This_Type 279 #endif 280 }; 281 282 FORM_EXPORT_VAR(FIELDTYPE *) TYPE_INTEGER = &typeTHIS; 283 284 #if NCURSES_INTEROP_FUNCS 285 /* The next routines are to simplify the use of ncurses from 286 programming languages with restrictions on interop with C level 287 constructs (e.g. variable access or va_list + ellipsis constructs) 288 */ 289 FORM_EXPORT(FIELDTYPE *) 290 _nc_TYPE_INTEGER(void) 291 { 292 return TYPE_INTEGER; 293 } 294 #endif 295 296 /* fty_int.c ends here */ 297