WINGs/userdefaults.c

   1
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5 #include <assert.h>
   6 #include <unistd.h>
   7 #include <sys/stat.h>
   8
   9 #include "wconfig.h"
  10
  11 #include "WINGs.h"
  12
  13 typedef struct W_UserDefaults {
  14         WMPropList *defaults;
  15
  16         WMPropList *appDomain;
  17
  18         WMPropList *searchListArray;
  19         WMPropList **searchList;        /* cache for searchListArray */
  20
  21         char dirty;
  22
  23         char dontSync;
  24
  25         char *path;             /* where is db located */
  26
  27         time_t timestamp;       /* last modification time */
  28
  29         struct W_UserDefaults *next;
  30
  31 } UserDefaults;
  32
  33 static UserDefaults *sharedUserDefaults = NULL;
  34
  35 char *WMUserDefaultsDidChangeNotification = "WMUserDefaultsDidChangeNotification";
  36
  37 static void synchronizeUserDefaults(void *foo);
  38
  39 extern char *WMGetApplicationName();
  40
  41 #define DEFAULTS_DIR "/Defaults"
  42
  43 char *wusergnusteppath()
  44 {
  45         static char *path = NULL;
  46         char *gspath;
  47         int pathlen;
  48
  49         if (!path) {
  50                 gspath = getenv("GNUSTEP_USER_ROOT");
  51                 if (gspath) {
  52                         gspath = wexpandpath(gspath);
  53                         pathlen = strlen(gspath) + 4;
  54                         path = wmalloc(pathlen);
  55                         strcpy(path, gspath);
  56                         wfree(gspath);
  57                 } else {
  58                         pathlen = strlen(wgethomedir()) + 10;
  59                         path = wmalloc(pathlen);
  60                         strcpy(path, wgethomedir());
  61                         strcat(path, "/GNUstep");
  62                 }
  63         }
  64
  65         return path;
  66 }
  67
  68 char *wdefaultspathfordomain(char *domain)
  69 {
  70         char *path;
  71         char *gspath;
  72
  73         gspath = wusergnusteppath();
  74         path = wmalloc(strlen(gspath) + strlen(DEFAULTS_DIR) + strlen(domain) + 4);
  75         strcpy(path, gspath);
  76         strcat(path, DEFAULTS_DIR);
  77         strcat(path, "/");
  78         strcat(path, domain);
  79
  80         return path;
  81 }
  82
  83 static void
  84 #ifdef HAVE_ATEXIT
  85 saveDefaultsChanges(void)
  86 #else
  87 saveDefaultsChanges(int foo, void *bar)
  88 #endif
  89 {
  90         /* save the user defaults databases */
  91         synchronizeUserDefaults(NULL);
  92 }
  93
  94 /* set to save changes in defaults when program is exited */
  95 static void registerSaveOnExit(void)
  96 {
  97         static Bool registeredSaveOnExit = False;
  98
  99         if (!registeredSaveOnExit) {
 100 #ifdef HAVE_ATEXIT
 101                 atexit(saveDefaultsChanges);
 102 #else
 103                 on_exit(saveDefaultsChanges, (void *)NULL);
 104 #endif
 105                 registeredSaveOnExit = True;
 106         }
 107 }
 108
 109 static void synchronizeUserDefaults(void *foo)
 110 {
 111         UserDefaults *database = sharedUserDefaults;
 112
 113         while (database) {
 114                 if (!database->dontSync)
 115                         WMSynchronizeUserDefaults(database);
 116                 database = database->next;
 117         }
 118 }
 119
 120 void WMEnableUDPeriodicSynchronization(WMUserDefaults * database, Bool enable)
 121 {
 122         database->dontSync = !enable;
 123 }
 124
 125 void WMSynchronizeUserDefaults(WMUserDefaults * database)
 126 {
 127         Bool fileIsNewer = False, release = False, notify = False;
 128         WMPropList *plF, *key;
 129         char *path;
 130         struct stat stbuf;
 131
 132         if (!database->path) {
 133                 path = wdefaultspathfordomain(WMGetApplicationName());
 134                 release = True;
 135         } else {
 136                 path = database->path;
 137         }
 138
 139         if (stat(path, &stbuf) >= 0 && stbuf.st_mtime > database->timestamp)
 140                 fileIsNewer = True;
 141
 142         if (database->appDomain && (database->dirty || fileIsNewer)) {
 143                 if (database->dirty && fileIsNewer) {
 144                         plF = WMReadPropListFromFile(path);
 145                         if (plF) {
 146                                 plF = WMMergePLDictionaries(plF, database->appDomain, False);
 147                                 WMReleasePropList(database->appDomain);
 148                                 database->appDomain = plF;
 149                                 key = database->searchList[0];
 150                                 WMPutInPLDictionary(database->defaults, key, plF);
 151                                 notify = True;
 152                         } else {
 153                                 /* something happened with the file. just overwrite it */
 154                                 wwarning(_("cannot read domain from file '%s' when syncing"), path);
 155                                 WMWritePropListToFile(database->appDomain, path, True);
 156                         }
 157                 } else if (database->dirty) {
 158                         WMWritePropListToFile(database->appDomain, path, True);
 159                 } else if (fileIsNewer) {
 160                         plF = WMReadPropListFromFile(path);
 161                         if (plF) {
 162                                 WMReleasePropList(database->appDomain);
 163                                 database->appDomain = plF;
 164                                 key = database->searchList[0];
 165                                 WMPutInPLDictionary(database->defaults, key, plF);
 166                                 notify = True;
 167                         } else {
 168                                 /* something happened with the file. just overwrite it */
 169                                 wwarning(_("cannot read domain from file '%s' when syncing"), path);
 170                                 WMWritePropListToFile(database->appDomain, path, True);
 171                         }
 172                 }
 173
 174                 database->dirty = 0;
 175
 176                 if (stat(path, &stbuf) >= 0)
 177                         database->timestamp = stbuf.st_mtime;
 178
 179                 if (notify) {
 180                         WMPostNotificationName(WMUserDefaultsDidChangeNotification, database, NULL);
 181                 }
 182         }
 183
 184         if (release)
 185                 wfree(path);
 186
 187 }
 188
 189 void WMSaveUserDefaults(WMUserDefaults * database)
 190 {
 191         if (database->appDomain) {
 192                 struct stat stbuf;
 193                 char *path;
 194                 Bool release = False;
 195
 196                 if (!database->path) {
 197                         path = wdefaultspathfordomain(WMGetApplicationName());
 198                         release = True;
 199                 } else {
 200                         path = database->path;
 201                 }
 202                 WMWritePropListToFile(database->appDomain, path, True);
 203                 database->dirty = 0;
 204                 if (stat(path, &stbuf) >= 0)
 205                         database->timestamp = stbuf.st_mtime;
 206                 if (release)
 207                         wfree(path);
 208         }
 209 }
 210
 211 WMUserDefaults *WMGetStandardUserDefaults(void)
 212 {
 213         WMUserDefaults *defaults;
 214         WMPropList *domain;
 215         WMPropList *key;
 216         struct stat stbuf;
 217         char *path;
 218         int i;
 219
 220         if (sharedUserDefaults) {
 221                 defaults = sharedUserDefaults;
 222                 while (defaults) {
 223                         /* path == NULL only for StandardUserDefaults db */
 224                         if (defaults->path == NULL)
 225                                 return defaults;
 226                         defaults = defaults->next;
 227                 }
 228         }
 229
 230         /* we didn't found the database we are looking for. Go read it. */
 231         defaults = wmalloc(sizeof(WMUserDefaults));
 232         memset(defaults, 0, sizeof(WMUserDefaults));
 233
 234         defaults->defaults = WMCreatePLDictionary(NULL, NULL);
 235
 236         defaults->searchList = wmalloc(sizeof(WMPropList *) * 3);
 237
 238         /* application domain */
 239         key = WMCreatePLString(WMGetApplicationName());
 240         defaults->searchList[0] = key;
 241
 242         /* temporary kluge. wmaker handles synchronization itself */
 243         if (strcmp(WMGetApplicationName(), "WindowMaker") == 0) {
 244                 defaults->dontSync = 1;
 245         }
 246
 247         path = wdefaultspathfordomain(WMGetFromPLString(key));
 248
 249         if (stat(path, &stbuf) >= 0)
 250                 defaults->timestamp = stbuf.st_mtime;
 251
 252         domain = WMReadPropListFromFile(path);
 253
 254         if (!domain)
 255                 domain = WMCreatePLDictionary(NULL, NULL);
 256
 257         if (path)
 258                 wfree(path);
 259
 260         defaults->appDomain = domain;
 261
 262         if (domain)
 263                 WMPutInPLDictionary(defaults->defaults, key, domain);
 264
 265         /* global domain */
 266         key = WMCreatePLString("WMGLOBAL");
 267         defaults->searchList[1] = key;
 268
 269         path = wdefaultspathfordomain(WMGetFromPLString(key));
 270
 271         domain = WMReadPropListFromFile(path);
 272
 273         wfree(path);
 274
 275         if (!domain)
 276                 domain = WMCreatePLDictionary(NULL, NULL);
 277
 278         if (domain)
 279                 WMPutInPLDictionary(defaults->defaults, key, domain);
 280
 281         /* terminate list */
 282         defaults->searchList[2] = NULL;
 283
 284         defaults->searchListArray = WMCreatePLArray(NULL, NULL);
 285
 286         i = 0;
 287         while (defaults->searchList[i]) {
 288                 WMAddToPLArray(defaults->searchListArray, defaults->searchList[i]);
 289                 i++;
 290         }
 291
 292         if (sharedUserDefaults)
 293                 defaults->next = sharedUserDefaults;
 294         sharedUserDefaults = defaults;
 295
 296         registerSaveOnExit();
 297
 298         return defaults;
 299 }
 300
 301 WMUserDefaults *WMGetDefaultsFromPath(char *path)
 302 {
 303         WMUserDefaults *defaults;
 304         WMPropList *domain;
 305         WMPropList *key;
 306         struct stat stbuf;
 307         char *name;
 308         int i;
 309
 310         assert(path != NULL);
 311
 312         if (sharedUserDefaults) {
 313                 defaults = sharedUserDefaults;
 314                 while (defaults) {
 315                         if (defaults->path && strcmp(defaults->path, path) == 0)
 316                                 return defaults;
 317                         defaults = defaults->next;
 318                 }
 319         }
 320
 321         /* we didn't found the database we are looking for. Go read it. */
 322         defaults = wmalloc(sizeof(WMUserDefaults));
 323         memset(defaults, 0, sizeof(WMUserDefaults));
 324
 325         defaults->defaults = WMCreatePLDictionary(NULL, NULL);
 326
 327         defaults->searchList = wmalloc(sizeof(WMPropList *) * 2);
 328
 329         /* the domain we want, go in the first position */
 330         name = strrchr(path, '/');
 331         if (!name)
 332                 name = path;
 333         else
 334                 name++;
 335
 336         key = WMCreatePLString(name);
 337         defaults->searchList[0] = key;
 338
 339         if (stat(path, &stbuf) >= 0)
 340                 defaults->timestamp = stbuf.st_mtime;
 341
 342         domain = WMReadPropListFromFile(path);
 343
 344         if (!domain)
 345                 domain = WMCreatePLDictionary(NULL, NULL);
 346
 347         defaults->path = wstrdup(path);
 348
 349         defaults->appDomain = domain;
 350
 351         if (domain)
 352                 WMPutInPLDictionary(defaults->defaults, key, domain);
 353
 354         /* terminate list */
 355         defaults->searchList[1] = NULL;
 356
 357         defaults->searchListArray = WMCreatePLArray(NULL, NULL);
 358
 359         i = 0;
 360         while (defaults->searchList[i]) {
 361                 WMAddToPLArray(defaults->searchListArray, defaults->searchList[i]);
 362                 i++;
 363         }
 364
 365         if (sharedUserDefaults)
 366                 defaults->next = sharedUserDefaults;
 367         sharedUserDefaults = defaults;
 368
 369         registerSaveOnExit();
 370
 371         return defaults;
 372 }
 373
 374 /* Returns a WMPropList array with all keys in the user defaults database.
 375  * Free the array with WMReleasePropList() when no longer needed,
 376  * but do not free the elements of the array! They're just references. */
 377 WMPropList *WMGetUDKeys(WMUserDefaults * database)
 378 {
 379         return WMGetPLDictionaryKeys(database->appDomain);
 380 }
 381
 382 WMPropList *WMGetUDObjectForKey(WMUserDefaults * database, char *defaultName)
 383 {
 384         WMPropList *domainName, *domain;
 385         WMPropList *object = NULL;
 386         WMPropList *key = WMCreatePLString(defaultName);
 387         int i = 0;
 388
 389         while (database->searchList[i] && !object) {
 390                 domainName = database->searchList[i];
 391                 domain = WMGetFromPLDictionary(database->defaults, domainName);
 392                 if (domain) {
 393                         object = WMGetFromPLDictionary(domain, key);
 394                 }
 395                 i++;
 396         }
 397         WMReleasePropList(key);
 398
 399         return object;
 400 }
 401
 402 void WMSetUDObjectForKey(WMUserDefaults * database, WMPropList * object, char *defaultName)
 403 {
 404         WMPropList *key = WMCreatePLString(defaultName);
 405
 406         database->dirty = 1;
 407
 408         WMPutInPLDictionary(database->appDomain, key, object);
 409         WMReleasePropList(key);
 410 }
 411
 412 void WMRemoveUDObjectForKey(WMUserDefaults * database, char *defaultName)
 413 {
 414         WMPropList *key = WMCreatePLString(defaultName);
 415
 416         database->dirty = 1;
 417
 418         WMRemoveFromPLDictionary(database->appDomain, key);
 419
 420         WMReleasePropList(key);
 421 }
 422
 423 char *WMGetUDStringForKey(WMUserDefaults * database, char *defaultName)
 424 {
 425         WMPropList *val;
 426
 427         val = WMGetUDObjectForKey(database, defaultName);
 428
 429         if (!val)
 430                 return NULL;
 431
 432         if (!WMIsPLString(val))
 433                 return NULL;
 434
 435         return WMGetFromPLString(val);
 436 }
 437
 438 int WMGetUDIntegerForKey(WMUserDefaults * database, char *defaultName)
 439 {
 440         WMPropList *val;
 441         char *str;
 442         int value;
 443
 444         val = WMGetUDObjectForKey(database, defaultName);
 445
 446         if (!val)
 447                 return 0;
 448
 449         if (!WMIsPLString(val))
 450                 return 0;
 451
 452         str = WMGetFromPLString(val);
 453         if (!str)
 454                 return 0;
 455
 456         if (sscanf(str, "%i", &value) != 1)
 457                 return 0;
 458
 459         return value;
 460 }
 461
 462 float WMGetUDFloatForKey(WMUserDefaults * database, char *defaultName)
 463 {
 464         WMPropList *val;
 465         char *str;
 466         float value;
 467
 468         val = WMGetUDObjectForKey(database, defaultName);
 469
 470         if (!val || !WMIsPLString(val))
 471                 return 0.0;
 472
 473         if (!(str = WMGetFromPLString(val)))
 474                 return 0.0;
 475
 476         if (sscanf(str, "%f", &value) != 1)
 477                 return 0.0;
 478
 479         return value;
 480 }
 481
 482 Bool WMGetUDBoolForKey(WMUserDefaults * database, char *defaultName)
 483 {
 484         WMPropList *val;
 485         int value;
 486         char *str;
 487
 488         val = WMGetUDObjectForKey(database, defaultName);
 489
 490         if (!val)
 491                 return False;
 492
 493         if (!WMIsPLString(val))
 494                 return False;
 495
 496         str = WMGetFromPLString(val);
 497         if (!str)
 498                 return False;
 499
 500         if (sscanf(str, "%i", &value) == 1 && value != 0)
 501                 return True;
 502
 503         if (strcasecmp(str, "YES") == 0)
 504                 return True;
 505
 506         if (strcasecmp(str, "Y") == 0)
 507                 return True;
 508
 509         return False;
 510 }
 511
 512 void WMSetUDIntegerForKey(WMUserDefaults * database, int value, char *defaultName)
 513 {
 514         WMPropList *object;
 515         char buffer[128];
 516
 517         sprintf(buffer, "%i", value);
 518         object = WMCreatePLString(buffer);
 519
 520         WMSetUDObjectForKey(database, object, defaultName);
 521         WMReleasePropList(object);
 522 }
 523
 524 void WMSetUDStringForKey(WMUserDefaults * database, char *value, char *defaultName)
 525 {
 526         WMPropList *object;
 527
 528         object = WMCreatePLString(value);
 529
 530         WMSetUDObjectForKey(database, object, defaultName);
 531         WMReleasePropList(object);
 532 }
 533
 534 void WMSetUDFloatForKey(WMUserDefaults * database, float value, char *defaultName)
 535 {
 536         WMPropList *object;
 537         char buffer[128];
 538
 539         sprintf(buffer, "%f", value);
 540         object = WMCreatePLString(buffer);
 541
 542         WMSetUDObjectForKey(database, object, defaultName);
 543         WMReleasePropList(object);
 544 }
 545
 546 void WMSetUDBoolForKey(WMUserDefaults * database, Bool value, char *defaultName)
 547 {
 548         static WMPropList *yes = NULL, *no = NULL;
 549
 550         if (!yes) {
 551                 yes = WMCreatePLString("YES");
 552                 no = WMCreatePLString("NO");
 553         }
 554
 555         WMSetUDObjectForKey(database, value ? yes : no, defaultName);
 556 }
 557
 558 WMPropList *WMGetUDSearchList(WMUserDefaults * database)
 559 {
 560         return database->searchListArray;
 561 }
 562
 563 void WMSetUDSearchList(WMUserDefaults * database, WMPropList * list)
 564 {
 565         int i, c;
 566
 567         if (database->searchList) {
 568                 i = 0;
 569                 while (database->searchList[i]) {
 570                         WMReleasePropList(database->searchList[i]);
 571                         i++;
 572                 }
 573                 wfree(database->searchList);
 574         }
 575         if (database->searchListArray) {
 576                 WMReleasePropList(database->searchListArray);
 577         }
 578
 579         c = WMGetPropListItemCount(list);
 580         database->searchList = wmalloc(sizeof(WMPropList *) * (c + 1));
 581
 582         for (i = 0; i < c; i++) {
 583                 database->searchList[i] = WMGetFromPLArray(list, i);
 584         }
 585         database->searchList[c] = NULL;
 586
 587         database->searchListArray = WMDeepCopyPropList(list);
 588 }