| 1 |
/* |
| 2 |
* prefs.cpp - Preferences handling |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2008 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include <string.h> |
| 22 |
#include <stdlib.h> |
| 23 |
#include <stdio.h> |
| 24 |
#include <ctype.h> |
| 25 |
|
| 26 |
#include "sysdeps.h" |
| 27 |
#include "sys.h" |
| 28 |
#include "prefs.h" |
| 29 |
|
| 30 |
|
| 31 |
// Prefs items are stored in a linked list of these nodes |
| 32 |
struct prefs_node { |
| 33 |
prefs_node *next; |
| 34 |
const char *name; |
| 35 |
prefs_type type; |
| 36 |
void *data; |
| 37 |
}; |
| 38 |
|
| 39 |
// List of prefs nodes |
| 40 |
static prefs_node *the_prefs = NULL; |
| 41 |
|
| 42 |
// Prototypes |
| 43 |
static const prefs_desc *find_prefs_desc(const char *name); |
| 44 |
|
| 45 |
|
| 46 |
/* |
| 47 |
* Initialize preferences |
| 48 |
*/ |
| 49 |
|
| 50 |
void PrefsInit(const char *vmdir, int &argc, char **&argv) |
| 51 |
{ |
| 52 |
// Set defaults |
| 53 |
AddPrefsDefaults(); |
| 54 |
AddPlatformPrefsDefaults(); |
| 55 |
|
| 56 |
// Load preferences from settings file |
| 57 |
LoadPrefs(vmdir); |
| 58 |
|
| 59 |
// Override prefs with command line options |
| 60 |
for (int i=1; i<argc; i++) { |
| 61 |
|
| 62 |
// Options are of the form '--keyword' |
| 63 |
const char *option = argv[i]; |
| 64 |
if (!option || strlen(option) < 3 || option[0] != '-' || option[1] != '-') |
| 65 |
continue; |
| 66 |
const char *keyword = option + 2; |
| 67 |
|
| 68 |
// Find descriptor for keyword |
| 69 |
const prefs_desc *d = find_prefs_desc(keyword); |
| 70 |
if (d == NULL) |
| 71 |
continue; |
| 72 |
argv[i] = NULL; |
| 73 |
|
| 74 |
// Get value |
| 75 |
i++; |
| 76 |
if (i >= argc) { |
| 77 |
fprintf(stderr, "Option '%s' must be followed by a value\n", option); |
| 78 |
continue; |
| 79 |
} |
| 80 |
const char *value = argv[i]; |
| 81 |
argv[i] = NULL; |
| 82 |
|
| 83 |
// Add/replace prefs item |
| 84 |
switch (d->type) { |
| 85 |
case TYPE_STRING: |
| 86 |
if (d->multiple) |
| 87 |
PrefsAddString(keyword, value); |
| 88 |
else |
| 89 |
PrefsReplaceString(keyword, value); |
| 90 |
break; |
| 91 |
|
| 92 |
case TYPE_BOOLEAN: { |
| 93 |
if (!strcmp(value, "true") || !strcmp(value, "on") || !strcmp(value, "yes")) |
| 94 |
PrefsReplaceBool(keyword, true); |
| 95 |
else if (!strcmp(value, "false") || !strcmp(value, "off") || !strcmp(value, "no")) |
| 96 |
PrefsReplaceBool(keyword, false); |
| 97 |
else |
| 98 |
fprintf(stderr, "Value for option '%s' must be 'true' or 'false'\n", option); |
| 99 |
break; |
| 100 |
} |
| 101 |
|
| 102 |
case TYPE_INT32: |
| 103 |
PrefsReplaceInt32(keyword, atoi(value)); |
| 104 |
break; |
| 105 |
|
| 106 |
default: |
| 107 |
break; |
| 108 |
} |
| 109 |
} |
| 110 |
|
| 111 |
// Remove processed arguments |
| 112 |
for (int i=1; i<argc; i++) { |
| 113 |
int k; |
| 114 |
for (k=i; k<argc; k++) |
| 115 |
if (argv[k] != NULL) |
| 116 |
break; |
| 117 |
if (k > i) { |
| 118 |
k -= i; |
| 119 |
for (int j=i+k; j<argc; j++) |
| 120 |
argv[j-k] = argv[j]; |
| 121 |
argc -= k; |
| 122 |
} |
| 123 |
} |
| 124 |
|
| 125 |
#ifdef SHEEPSHAVER |
| 126 |
// System specific initialization |
| 127 |
prefs_init(); |
| 128 |
#endif |
| 129 |
} |
| 130 |
|
| 131 |
|
| 132 |
/* |
| 133 |
* Deinitialize preferences |
| 134 |
*/ |
| 135 |
|
| 136 |
void PrefsExit(void) |
| 137 |
{ |
| 138 |
#ifdef SHEEPSHAVER |
| 139 |
// System specific deinitialization |
| 140 |
prefs_exit(); |
| 141 |
#endif |
| 142 |
|
| 143 |
// Free prefs list |
| 144 |
prefs_node *p = the_prefs, *next; |
| 145 |
while (p) { |
| 146 |
next = p->next; |
| 147 |
free((void *)p->name); |
| 148 |
free(p->data); |
| 149 |
delete p; |
| 150 |
p = next; |
| 151 |
} |
| 152 |
the_prefs = NULL; |
| 153 |
} |
| 154 |
|
| 155 |
|
| 156 |
/* |
| 157 |
* Print preferences options help |
| 158 |
*/ |
| 159 |
|
| 160 |
static void print_options(const prefs_desc *list) |
| 161 |
{ |
| 162 |
while (list->type != TYPE_END) { |
| 163 |
if (list->help) { |
| 164 |
const char *typestr, *defstr; |
| 165 |
char numstr[32]; |
| 166 |
switch (list->type) { |
| 167 |
case TYPE_STRING: |
| 168 |
typestr = "STRING"; |
| 169 |
defstr = PrefsFindString(list->name); |
| 170 |
if (defstr == NULL) |
| 171 |
defstr = "none"; |
| 172 |
break; |
| 173 |
case TYPE_BOOLEAN: |
| 174 |
typestr = "BOOL"; |
| 175 |
if (PrefsFindBool(list->name)) |
| 176 |
defstr = "true"; |
| 177 |
else |
| 178 |
defstr = "false"; |
| 179 |
break; |
| 180 |
case TYPE_INT32: |
| 181 |
typestr = "NUMBER"; |
| 182 |
sprintf(numstr, "%d", PrefsFindInt32(list->name)); |
| 183 |
defstr = numstr; |
| 184 |
break; |
| 185 |
default: |
| 186 |
typestr = "<unknown>"; |
| 187 |
defstr = "none"; |
| 188 |
break; |
| 189 |
} |
| 190 |
printf(" --%s %s\n %s [default=%s]\n", list->name, typestr, list->help, defstr); |
| 191 |
} |
| 192 |
list++; |
| 193 |
} |
| 194 |
} |
| 195 |
|
| 196 |
void PrefsPrintUsage(void) |
| 197 |
{ |
| 198 |
printf("\nGeneral options:\n"); |
| 199 |
print_options(common_prefs_items); |
| 200 |
printf("\nPlatform-specific options:\n"); |
| 201 |
print_options(platform_prefs_items); |
| 202 |
printf("\nBoolean options are specified as '--OPTION true|on|yes' or\n'--OPTION false|off|no'.\n"); |
| 203 |
} |
| 204 |
|
| 205 |
|
| 206 |
/* |
| 207 |
* Find preferences descriptor by keyword |
| 208 |
*/ |
| 209 |
|
| 210 |
static const prefs_desc *find_prefs_desc(const char *name, const prefs_desc *list) |
| 211 |
{ |
| 212 |
while (list->type != TYPE_ANY) { |
| 213 |
if (strcmp(list->name, name) == 0) |
| 214 |
return list; |
| 215 |
list++; |
| 216 |
} |
| 217 |
return NULL; |
| 218 |
} |
| 219 |
|
| 220 |
static const prefs_desc *find_prefs_desc(const char *name) |
| 221 |
{ |
| 222 |
const prefs_desc *d = find_prefs_desc(name, common_prefs_items); |
| 223 |
if (d == NULL) |
| 224 |
d = find_prefs_desc(name, platform_prefs_items); |
| 225 |
return d; |
| 226 |
} |
| 227 |
|
| 228 |
|
| 229 |
/* |
| 230 |
* Set prefs items |
| 231 |
*/ |
| 232 |
|
| 233 |
static void add_data(const char *name, prefs_type type, void *data, int size) |
| 234 |
{ |
| 235 |
void *d = malloc(size); |
| 236 |
if (d == NULL) |
| 237 |
return; |
| 238 |
memcpy(d, data, size); |
| 239 |
prefs_node *p = new prefs_node; |
| 240 |
p->next = 0; |
| 241 |
p->name = strdup(name); |
| 242 |
p->type = type; |
| 243 |
p->data = d; |
| 244 |
if (the_prefs) { |
| 245 |
prefs_node *prev = the_prefs; |
| 246 |
while (prev->next) |
| 247 |
prev = prev->next; |
| 248 |
prev->next = p; |
| 249 |
} else |
| 250 |
the_prefs = p; |
| 251 |
} |
| 252 |
|
| 253 |
void PrefsAddString(const char *name, const char *s) |
| 254 |
{ |
| 255 |
add_data(name, TYPE_STRING, (void *)s, strlen(s) + 1); |
| 256 |
} |
| 257 |
|
| 258 |
void PrefsAddBool(const char *name, bool b) |
| 259 |
{ |
| 260 |
add_data(name, TYPE_BOOLEAN, &b, sizeof(bool)); |
| 261 |
} |
| 262 |
|
| 263 |
void PrefsAddInt32(const char *name, int32 val) |
| 264 |
{ |
| 265 |
add_data(name, TYPE_INT32, &val, sizeof(int32)); |
| 266 |
} |
| 267 |
|
| 268 |
|
| 269 |
/* |
| 270 |
* Replace prefs items |
| 271 |
*/ |
| 272 |
|
| 273 |
static prefs_node *find_node(const char *name, prefs_type type, int index = 0) |
| 274 |
{ |
| 275 |
prefs_node *p = the_prefs; |
| 276 |
int i = 0; |
| 277 |
while (p) { |
| 278 |
if ((type == TYPE_ANY || p->type == type) && !strcmp(p->name, name)) { |
| 279 |
if (i == index) |
| 280 |
return p; |
| 281 |
else |
| 282 |
i++; |
| 283 |
} |
| 284 |
p = p->next; |
| 285 |
} |
| 286 |
return NULL; |
| 287 |
} |
| 288 |
|
| 289 |
void PrefsReplaceString(const char *name, const char *s, int index) |
| 290 |
{ |
| 291 |
prefs_node *p = find_node(name, TYPE_STRING, index); |
| 292 |
if (p) { |
| 293 |
free(p->data); |
| 294 |
p->data = strdup(s); |
| 295 |
} else |
| 296 |
add_data(name, TYPE_STRING, (void *)s, strlen(s) + 1); |
| 297 |
} |
| 298 |
|
| 299 |
void PrefsReplaceBool(const char *name, bool b) |
| 300 |
{ |
| 301 |
prefs_node *p = find_node(name, TYPE_BOOLEAN); |
| 302 |
if (p) |
| 303 |
*(bool *)(p->data) = b; |
| 304 |
else |
| 305 |
add_data(name, TYPE_BOOLEAN, &b, sizeof(bool)); |
| 306 |
} |
| 307 |
|
| 308 |
void PrefsReplaceInt32(const char *name, int32 val) |
| 309 |
{ |
| 310 |
prefs_node *p = find_node(name, TYPE_INT32); |
| 311 |
if (p) |
| 312 |
*(int32 *)(p->data) = val; |
| 313 |
else |
| 314 |
add_data(name, TYPE_INT32, &val, sizeof(int32)); |
| 315 |
} |
| 316 |
|
| 317 |
|
| 318 |
/* |
| 319 |
* Get prefs items |
| 320 |
*/ |
| 321 |
|
| 322 |
const char *PrefsFindString(const char *name, int index) |
| 323 |
{ |
| 324 |
prefs_node *p = find_node(name, TYPE_STRING, index); |
| 325 |
if (p) |
| 326 |
return (char *)(p->data); |
| 327 |
else |
| 328 |
return NULL; |
| 329 |
} |
| 330 |
|
| 331 |
bool PrefsFindBool(const char *name) |
| 332 |
{ |
| 333 |
prefs_node *p = find_node(name, TYPE_BOOLEAN, 0); |
| 334 |
if (p) |
| 335 |
return *(bool *)(p->data); |
| 336 |
else |
| 337 |
return false; |
| 338 |
} |
| 339 |
|
| 340 |
int32 PrefsFindInt32(const char *name) |
| 341 |
{ |
| 342 |
prefs_node *p = find_node(name, TYPE_INT32, 0); |
| 343 |
if (p) |
| 344 |
return *(int32 *)(p->data); |
| 345 |
else |
| 346 |
return 0; |
| 347 |
} |
| 348 |
|
| 349 |
|
| 350 |
/* |
| 351 |
* Remove prefs items |
| 352 |
*/ |
| 353 |
|
| 354 |
void PrefsRemoveItem(const char *name, int index) |
| 355 |
{ |
| 356 |
prefs_node *p = find_node(name, TYPE_ANY, index); |
| 357 |
if (p) { |
| 358 |
free((void *)p->name); |
| 359 |
free(p->data); |
| 360 |
prefs_node *q = the_prefs; |
| 361 |
if (q == p) { |
| 362 |
the_prefs = NULL; |
| 363 |
delete p; |
| 364 |
return; |
| 365 |
} |
| 366 |
while (q) { |
| 367 |
if (q->next == p) { |
| 368 |
q->next = p->next; |
| 369 |
delete p; |
| 370 |
return; |
| 371 |
} |
| 372 |
q = q->next; |
| 373 |
} |
| 374 |
} |
| 375 |
} |
| 376 |
|
| 377 |
|
| 378 |
/* |
| 379 |
* Load prefs from stream (utility function for LoadPrefs() implementation) |
| 380 |
*/ |
| 381 |
|
| 382 |
void LoadPrefsFromStream(FILE *f) |
| 383 |
{ |
| 384 |
char line[256]; |
| 385 |
while(fgets(line, 255, f)) { |
| 386 |
// Read line |
| 387 |
int len = strlen(line); |
| 388 |
if (len == 0) |
| 389 |
continue; |
| 390 |
line[len-1] = 0; |
| 391 |
|
| 392 |
// Comments begin with "#" or ";" |
| 393 |
if (line[0] == '#' || line[0] == ';') |
| 394 |
continue; |
| 395 |
|
| 396 |
// Terminate string after keyword |
| 397 |
char *p = line; |
| 398 |
while (!isspace(*p)) p++; |
| 399 |
*p++ = 0; |
| 400 |
|
| 401 |
// Skip whitespace until value |
| 402 |
while (isspace(*p)) p++; |
| 403 |
char *keyword = line; |
| 404 |
char *value = p; |
| 405 |
int32 i = atol(value); |
| 406 |
|
| 407 |
// Look for keyword first in prefs item list |
| 408 |
const prefs_desc *desc = find_prefs_desc(keyword); |
| 409 |
if (desc == NULL) { |
| 410 |
printf("WARNING: Unknown preferences keyword '%s'\n", keyword); |
| 411 |
continue; |
| 412 |
} |
| 413 |
|
| 414 |
// Add item to prefs |
| 415 |
switch (desc->type) { |
| 416 |
case TYPE_STRING: |
| 417 |
if (desc->multiple) |
| 418 |
PrefsAddString(keyword, value); |
| 419 |
else |
| 420 |
PrefsReplaceString(keyword, value); |
| 421 |
break; |
| 422 |
case TYPE_BOOLEAN: |
| 423 |
PrefsReplaceBool(keyword, !strcmp(value, "true")); |
| 424 |
break; |
| 425 |
case TYPE_INT32: |
| 426 |
PrefsReplaceInt32(keyword, i); |
| 427 |
break; |
| 428 |
default: |
| 429 |
break; |
| 430 |
} |
| 431 |
} |
| 432 |
} |
| 433 |
|
| 434 |
|
| 435 |
/* |
| 436 |
* Save settings to stream (utility function for SavePrefs() implementation) |
| 437 |
*/ |
| 438 |
|
| 439 |
static void write_prefs(FILE *f, const prefs_desc *list) |
| 440 |
{ |
| 441 |
while (list->type != TYPE_ANY) { |
| 442 |
switch (list->type) { |
| 443 |
case TYPE_STRING: { |
| 444 |
int index = 0; |
| 445 |
const char *str; |
| 446 |
while ((str = PrefsFindString(list->name, index++)) != NULL) |
| 447 |
fprintf(f, "%s %s\n", list->name, str); |
| 448 |
break; |
| 449 |
} |
| 450 |
case TYPE_BOOLEAN: |
| 451 |
fprintf(f, "%s %s\n", list->name, PrefsFindBool(list->name) ? "true" : "false"); |
| 452 |
break; |
| 453 |
case TYPE_INT32: |
| 454 |
fprintf(f, "%s %d\n", list->name, PrefsFindInt32(list->name)); |
| 455 |
break; |
| 456 |
default: |
| 457 |
break; |
| 458 |
} |
| 459 |
list++; |
| 460 |
} |
| 461 |
} |
| 462 |
|
| 463 |
void SavePrefsToStream(FILE *f) |
| 464 |
{ |
| 465 |
write_prefs(f, common_prefs_items); |
| 466 |
write_prefs(f, platform_prefs_items); |
| 467 |
} |
