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| 1 static char elsieid[] = "@(#)zdump.c 8.8"; |
| 2 |
| 3 /* |
| 4 ** This code has been made independent of the rest of the time |
| 5 ** conversion package to increase confidence in the verification it provides. |
| 6 ** You can use this code to help in verifying other implementations. |
| 7 */ |
| 8 |
| 9 /* |
| 10 * ICU note: Mr. Arthur David Olson (olsona@dc37a.nci.nih.gov) stated that |
| 11 * "zdump.c is indeed in the public domain" in e-mail on Feb 22, 2007. |
| 12 * This version of zdump.c is modified by ICU team to change output format |
| 13 * and some additional options. |
| 14 */ |
| 15 |
| 16 |
| 17 #include "stdio.h" /* for stdout, stderr, perror */ |
| 18 #include "string.h" /* for strcpy */ |
| 19 #include "sys/types.h" /* for time_t */ |
| 20 #include "time.h" /* for struct tm */ |
| 21 #include "stdlib.h" /* for exit, malloc, atoi */ |
| 22 #include "float.h" /* for FLT_MAX and DBL_MAX */ |
| 23 #include "ctype.h" /* for isalpha et al. */ |
| 24 |
| 25 /* Enable extensions and modifications for ICU. */ |
| 26 #define ICU |
| 27 |
| 28 #ifdef ICU |
| 29 #include "dirent.h" |
| 30 #endif |
| 31 |
| 32 #ifndef isascii |
| 33 #define isascii(x) 1 |
| 34 #endif /* !defined isascii */ |
| 35 |
| 36 #ifndef ZDUMP_LO_YEAR |
| 37 #define ZDUMP_LO_YEAR (-500) |
| 38 #endif /* !defined ZDUMP_LO_YEAR */ |
| 39 |
| 40 #ifndef ZDUMP_HI_YEAR |
| 41 #define ZDUMP_HI_YEAR 2500 |
| 42 #endif /* !defined ZDUMP_HI_YEAR */ |
| 43 |
| 44 #ifndef MAX_STRING_LENGTH |
| 45 #define MAX_STRING_LENGTH 1024 |
| 46 #endif /* !defined MAX_STRING_LENGTH */ |
| 47 |
| 48 #ifndef TRUE |
| 49 #define TRUE 1 |
| 50 #endif /* !defined TRUE */ |
| 51 |
| 52 #ifndef FALSE |
| 53 #define FALSE 0 |
| 54 #endif /* !defined FALSE */ |
| 55 |
| 56 #ifndef EXIT_SUCCESS |
| 57 #define EXIT_SUCCESS 0 |
| 58 #endif /* !defined EXIT_SUCCESS */ |
| 59 |
| 60 #ifndef EXIT_FAILURE |
| 61 #define EXIT_FAILURE 1 |
| 62 #endif /* !defined EXIT_FAILURE */ |
| 63 |
| 64 #ifndef SECSPERMIN |
| 65 #define SECSPERMIN 60 |
| 66 #endif /* !defined SECSPERMIN */ |
| 67 |
| 68 #ifndef MINSPERHOUR |
| 69 #define MINSPERHOUR 60 |
| 70 #endif /* !defined MINSPERHOUR */ |
| 71 |
| 72 #ifndef SECSPERHOUR |
| 73 #define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) |
| 74 #endif /* !defined SECSPERHOUR */ |
| 75 |
| 76 #ifndef HOURSPERDAY |
| 77 #define HOURSPERDAY 24 |
| 78 #endif /* !defined HOURSPERDAY */ |
| 79 |
| 80 #ifndef EPOCH_YEAR |
| 81 #define EPOCH_YEAR 1970 |
| 82 #endif /* !defined EPOCH_YEAR */ |
| 83 |
| 84 #ifndef TM_YEAR_BASE |
| 85 #define TM_YEAR_BASE 1900 |
| 86 #endif /* !defined TM_YEAR_BASE */ |
| 87 |
| 88 #ifndef DAYSPERNYEAR |
| 89 #define DAYSPERNYEAR 365 |
| 90 #endif /* !defined DAYSPERNYEAR */ |
| 91 |
| 92 #ifndef isleap |
| 93 #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) |
| 94 #endif /* !defined isleap */ |
| 95 |
| 96 #ifndef isleap_sum |
| 97 /* |
| 98 ** See tzfile.h for details on isleap_sum. |
| 99 */ |
| 100 #define isleap_sum(a, b) isleap((a) % 400 + (b) % 400) |
| 101 #endif /* !defined isleap_sum */ |
| 102 |
| 103 #define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY) |
| 104 #define SECSPERNYEAR (SECSPERDAY * DAYSPERNYEAR) |
| 105 #define SECSPERLYEAR (SECSPERNYEAR + SECSPERDAY) |
| 106 |
| 107 #ifndef HAVE_GETTEXT |
| 108 #define HAVE_GETTEXT 0 |
| 109 #endif |
| 110 #if HAVE_GETTEXT |
| 111 #include "locale.h" /* for setlocale */ |
| 112 #include "libintl.h" |
| 113 #endif /* HAVE_GETTEXT */ |
| 114 |
| 115 #ifndef GNUC_or_lint |
| 116 #ifdef lint |
| 117 #define GNUC_or_lint |
| 118 #else /* !defined lint */ |
| 119 #ifdef __GNUC__ |
| 120 #define GNUC_or_lint |
| 121 #endif /* defined __GNUC__ */ |
| 122 #endif /* !defined lint */ |
| 123 #endif /* !defined GNUC_or_lint */ |
| 124 |
| 125 #ifndef INITIALIZE |
| 126 #ifdef GNUC_or_lint |
| 127 #define INITIALIZE(x) ((x) = 0) |
| 128 #else /* !defined GNUC_or_lint */ |
| 129 #define INITIALIZE(x) |
| 130 #endif /* !defined GNUC_or_lint */ |
| 131 #endif /* !defined INITIALIZE */ |
| 132 |
| 133 /* |
| 134 ** For the benefit of GNU folk... |
| 135 ** `_(MSGID)' uses the current locale's message library string for MSGID. |
| 136 ** The default is to use gettext if available, and use MSGID otherwise. |
| 137 */ |
| 138 |
| 139 #ifndef _ |
| 140 #if HAVE_GETTEXT |
| 141 #define _(msgid) gettext(msgid) |
| 142 #else /* !HAVE_GETTEXT */ |
| 143 #define _(msgid) msgid |
| 144 #endif /* !HAVE_GETTEXT */ |
| 145 #endif /* !defined _ */ |
| 146 |
| 147 #ifndef TZ_DOMAIN |
| 148 #define TZ_DOMAIN "tz" |
| 149 #endif /* !defined TZ_DOMAIN */ |
| 150 |
| 151 extern char ** environ; |
| 152 extern int getopt(int argc, char * const argv[], |
| 153 const char * options); |
| 154 extern char * optarg; |
| 155 extern int optind; |
| 156 extern char * tzname[2]; |
| 157 |
| 158 static time_t absolute_min_time; |
| 159 static time_t absolute_max_time; |
| 160 static size_t longest; |
| 161 static char * progname; |
| 162 static int warned; |
| 163 |
| 164 static char * abbr(struct tm * tmp); |
| 165 static void abbrok(const char * abbrp, const char * zone); |
| 166 static long delta(struct tm * newp, struct tm * oldp); |
| 167 static void dumptime(const struct tm * tmp); |
| 168 static time_t hunt(char * name, time_t lot, time_t hit); |
| 169 static void setabsolutes(void); |
| 170 static void show(char * zone, time_t t, int v); |
| 171 static const char * tformat(void); |
| 172 static time_t yeartot(long y); |
| 173 #ifdef ICU |
| 174 typedef struct listentry { |
| 175 char * name; |
| 176 struct listentry * next; |
| 177 } listentry; |
| 178 |
| 179 static time_t huntICU(char * name, time_t lot, time_t hit, FILE *fp); |
| 180 static void dumptimeICU(FILE * fp, time_t t); |
| 181 static void showICU(FILE * fp, char * zone, time_t t1, time_t t2); |
| 182 static int getall(struct listentry ** namelist); |
| 183 static void getzones(char * basedir, char * subdir, struct listentry ** last, in
t * count); |
| 184 #endif |
| 185 |
| 186 #ifndef TYPECHECK |
| 187 #define my_localtime localtime |
| 188 #else /* !defined TYPECHECK */ |
| 189 static struct tm * |
| 190 my_localtime(tp) |
| 191 time_t * tp; |
| 192 { |
| 193 register struct tm * tmp; |
| 194 |
| 195 tmp = localtime(tp); |
| 196 if (tp != NULL && tmp != NULL) { |
| 197 struct tm tm; |
| 198 register time_t t; |
| 199 |
| 200 tm = *tmp; |
| 201 t = mktime(&tm); |
| 202 if (t - *tp >= 1 || *tp - t >= 1) { |
| 203 (void) fflush(stdout); |
| 204 (void) fprintf(stderr, "\n%s: ", progname); |
| 205 (void) fprintf(stderr, tformat(), *tp); |
| 206 (void) fprintf(stderr, " ->"); |
| 207 (void) fprintf(stderr, " year=%d", tmp->tm_year); |
| 208 (void) fprintf(stderr, " mon=%d", tmp->tm_mon); |
| 209 (void) fprintf(stderr, " mday=%d", tmp->tm_mday); |
| 210 (void) fprintf(stderr, " hour=%d", tmp->tm_hour); |
| 211 (void) fprintf(stderr, " min=%d", tmp->tm_min); |
| 212 (void) fprintf(stderr, " sec=%d", tmp->tm_sec); |
| 213 (void) fprintf(stderr, " isdst=%d", tmp->tm_isdst); |
| 214 (void) fprintf(stderr, " -> "); |
| 215 (void) fprintf(stderr, tformat(), t); |
| 216 (void) fprintf(stderr, "\n"); |
| 217 } |
| 218 } |
| 219 return tmp; |
| 220 } |
| 221 #endif /* !defined TYPECHECK */ |
| 222 |
| 223 static void |
| 224 abbrok(abbrp, zone) |
| 225 const char * const abbrp; |
| 226 const char * const zone; |
| 227 { |
| 228 register const char * cp; |
| 229 register char * wp; |
| 230 |
| 231 if (warned) |
| 232 return; |
| 233 cp = abbrp; |
| 234 wp = NULL; |
| 235 while (isascii((unsigned char) *cp) && isalpha((unsigned char) *cp)) |
| 236 ++cp; |
| 237 if (cp - abbrp == 0) |
| 238 wp = _("lacks alphabetic at start"); |
| 239 else if (cp - abbrp < 3) |
| 240 wp = _("has fewer than 3 alphabetics"); |
| 241 else if (cp - abbrp > 6) |
| 242 wp = _("has more than 6 alphabetics"); |
| 243 if (wp == NULL && (*cp == '+' || *cp == '-')) { |
| 244 ++cp; |
| 245 if (isascii((unsigned char) *cp) && |
| 246 isdigit((unsigned char) *cp)) |
| 247 if (*cp++ == '1' && *cp >= '0' && *cp <= '4') |
| 248 ++cp; |
| 249 if (*cp != '\0') |
| 250 wp = _("differs from POSIX standard"); |
| 251 } |
| 252 if (wp == NULL) |
| 253 return; |
| 254 (void) fflush(stdout); |
| 255 (void) fprintf(stderr, |
| 256 _("%s: warning: zone \"%s\" abbreviation \"%s\" %s\n"), |
| 257 progname, zone, abbrp, wp); |
| 258 warned = TRUE; |
| 259 } |
| 260 |
| 261 static void |
| 262 usage(const char *progname, FILE *stream, int status) |
| 263 { |
| 264 (void) fprintf(stream, |
| 265 _("%s: usage is %s [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] zonena
me ...\n\ |
| 266 \n\ |
| 267 Report bugs to tz@elsie.nci.nih.gov.\n"), |
| 268 progname, progname); |
| 269 exit(status); |
| 270 } |
| 271 |
| 272 int |
| 273 main(argc, argv) |
| 274 int argc; |
| 275 char * argv[]; |
| 276 { |
| 277 register int i; |
| 278 register int c; |
| 279 register int vflag; |
| 280 register char * cutarg; |
| 281 register long cutloyear = ZDUMP_LO_YEAR; |
| 282 register long cuthiyear = ZDUMP_HI_YEAR; |
| 283 register time_t cutlotime; |
| 284 register time_t cuthitime; |
| 285 register char ** fakeenv; |
| 286 time_t now; |
| 287 time_t t; |
| 288 time_t newt; |
| 289 struct tm tm; |
| 290 struct tm newtm; |
| 291 register struct tm * tmp; |
| 292 register struct tm * newtmp; |
| 293 #ifdef ICU |
| 294 int nextopt; |
| 295 char * dirarg; |
| 296 int aflag; |
| 297 int iflag; |
| 298 listentry * namelist = NULL; |
| 299 FILE * fp = stdout; |
| 300 #endif |
| 301 |
| 302 INITIALIZE(cutlotime); |
| 303 INITIALIZE(cuthitime); |
| 304 #if HAVE_GETTEXT |
| 305 (void) setlocale(LC_ALL, ""); |
| 306 #ifdef TZ_DOMAINDIR |
| 307 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); |
| 308 #endif /* defined TEXTDOMAINDIR */ |
| 309 (void) textdomain(TZ_DOMAIN); |
| 310 #endif /* HAVE_GETTEXT */ |
| 311 progname = argv[0]; |
| 312 for (i = 1; i < argc; ++i) |
| 313 if (strcmp(argv[i], "--version") == 0) { |
| 314 (void) printf("%s\n", elsieid); |
| 315 exit(EXIT_SUCCESS); |
| 316 } else if (strcmp(argv[i], "--help") == 0) { |
| 317 usage(progname, stdout, EXIT_SUCCESS); |
| 318 } |
| 319 vflag = 0; |
| 320 cutarg = NULL; |
| 321 #ifdef ICU |
| 322 aflag = 0; |
| 323 iflag = 0; |
| 324 dirarg = NULL; |
| 325 nextopt = 1; |
| 326 while(nextopt) { |
| 327 c = getopt(argc, argv, "ac:d:iv"); |
| 328 switch(c) { |
| 329 case 'a': |
| 330 aflag = 1; |
| 331 break; |
| 332 case 'c': |
| 333 cutarg = optarg; |
| 334 break; |
| 335 case 'd': |
| 336 dirarg = optarg; |
| 337 break; |
| 338 case 'i': |
| 339 iflag = 1; |
| 340 break; |
| 341 case 'v': |
| 342 vflag = 1; |
| 343 break; |
| 344 default: |
| 345 nextopt = 0; |
| 346 break; |
| 347 } |
| 348 } |
| 349 if ((c != EOF && c != -1) || |
| 350 (optind == argc - 1 && strcmp(argv[optind], "=") == 0)) { |
| 351 (void) fprintf(stderr, |
| 352 _("%s: usage is %s [ --version ] [ -a ] [ -v ] [
-i ] [ -c [loyear,]hiyear ] [ -d dir ] [ zonename ... ]\n"), |
| 353 progname, progname); |
| 354 exit(EXIT_FAILURE); |
| 355 } |
| 356 |
| 357 if (dirarg != NULL) { |
| 358 DIR * dp; |
| 359 /* create the output directory */ |
| 360 mkdir(dirarg, 0777); |
| 361 if ((dp = opendir(dirarg)) == NULL) { |
| 362 fprintf(stderr, "cannot create the target directory"); |
| 363 exit(EXIT_FAILURE); |
| 364 } |
| 365 closedir(dp); |
| 366 } |
| 367 #else |
| 368 while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v') |
| 369 if (c == 'v') |
| 370 vflag = 1; |
| 371 else cutarg = optarg; |
| 372 if ((c != EOF && c != -1) || |
| 373 (optind == argc - 1 && strcmp(argv[optind], "=") == 0)) { |
| 374 usage(progname, stderr, EXIT_FAILURE); |
| 375 } |
| 376 #endif |
| 377 if (vflag) { |
| 378 if (cutarg != NULL) { |
| 379 long lo; |
| 380 long hi; |
| 381 char dummy; |
| 382 |
| 383 if (sscanf(cutarg, "%ld%c", &hi, &dummy) == 1) { |
| 384 cuthiyear = hi; |
| 385 } else if (sscanf(cutarg, "%ld,%ld%c", |
| 386 &lo, &hi, &dummy) == 2) { |
| 387 cutloyear = lo; |
| 388 cuthiyear = hi; |
| 389 } else { |
| 390 (void) fprintf(stderr, _("%s: wild -c argument %s\n"), |
| 391 progname, cutarg); |
| 392 exit(EXIT_FAILURE); |
| 393 } |
| 394 } |
| 395 setabsolutes(); |
| 396 cutlotime = yeartot(cutloyear); |
| 397 cuthitime = yeartot(cuthiyear); |
| 398 } |
| 399 |
| 400 #ifdef ICU |
| 401 if (aflag) { |
| 402 /* get all available zones */ |
| 403 char ** fakeargv; |
| 404 int i; |
| 405 int count; |
| 406 |
| 407 count = getall(&namelist); |
| 408 |
| 409 fakeargv = (char **) malloc((size_t) (argc + count) * sizeof *ar
gv); |
| 410 /* |
| 411 if ((fakeargv = (char **) malloc((size_t) (argc + count) * sizeo
f *argv)) == NULL) { |
| 412 exit(EXIT_FAILURE); |
| 413 } |
| 414 */ |
| 415 for (i = 0; i < argc; i++) { |
| 416 fakeargv[i] = argv[i]; |
| 417 } |
| 418 for (i = 0; i < count; i++) { |
| 419 fakeargv[i + argc] = namelist->name; |
| 420 namelist = namelist->next; |
| 421 } |
| 422 argv = fakeargv; |
| 423 argc += count; |
| 424 } |
| 425 #endif |
| 426 (void) time(&now); |
| 427 longest = 0; |
| 428 for (i = optind; i < argc; ++i) |
| 429 if (strlen(argv[i]) > longest) |
| 430 longest = strlen(argv[i]); |
| 431 { |
| 432 register int from; |
| 433 register int to; |
| 434 |
| 435 for (i = 0; environ[i] != NULL; ++i) |
| 436 continue; |
| 437 fakeenv = (char **) malloc((size_t) ((i + 2) * |
| 438 sizeof *fakeenv)); |
| 439 if (fakeenv == NULL || |
| 440 (fakeenv[0] = (char *) malloc(longest + 4)) == NULL) { |
| 441 (void) perror(progname); |
| 442 exit(EXIT_FAILURE); |
| 443 } |
| 444 to = 0; |
| 445 (void) strcpy(fakeenv[to++], "TZ="); |
| 446 for (from = 0; environ[from] != NULL; ++from) |
| 447 if (strncmp(environ[from], "TZ=", 3) != 0) |
| 448 fakeenv[to++] = environ[from]; |
| 449 fakeenv[to] = NULL; |
| 450 environ = fakeenv; |
| 451 } |
| 452 for (i = optind; i < argc; ++i) { |
| 453 static char buf[MAX_STRING_LENGTH]; |
| 454 |
| 455 (void) strcpy(&fakeenv[0][3], argv[i]); |
| 456 if (!vflag) { |
| 457 show(argv[i], now, FALSE); |
| 458 continue; |
| 459 } |
| 460 #ifdef ICU |
| 461 fp = NULL; |
| 462 if (iflag) { |
| 463 if (dirarg == NULL) { |
| 464 /* we want to display a zone name here */ |
| 465 if (i != optind) { |
| 466 printf("\n"); |
| 467 } |
| 468 printf("ZONE: %s\n", argv[i]); |
| 469 } else { |
| 470 int zstart; |
| 471 char path[FILENAME_MAX + 1]; |
| 472 strcpy(path, dirarg); |
| 473 strcat(path, "/"); |
| 474 zstart = strlen(path); |
| 475 strcat(path, argv[i]); |
| 476 /* replace '/' with '-' */ |
| 477 while(path[++zstart] != 0) { |
| 478 if (path[zstart] == '/') { |
| 479 path[zstart] = '-'; |
| 480 } |
| 481 } |
| 482 if ((fp = fopen(path, "w")) == NULL) { |
| 483 fprintf(stderr, "cannot create output fi
le %s\n", path); |
| 484 exit(EXIT_FAILURE); |
| 485 } |
| 486 } |
| 487 } |
| 488 #endif |
| 489 warned = FALSE; |
| 490 t = absolute_min_time; |
| 491 #ifdef ICU |
| 492 /* skip displaying info for the lowest time, which is actually n
ot |
| 493 * a transition when -i option is set */ |
| 494 if (!iflag) { |
| 495 #endif |
| 496 show(argv[i], t, TRUE); |
| 497 t += SECSPERHOUR * HOURSPERDAY; |
| 498 show(argv[i], t, TRUE); |
| 499 #ifdef ICU |
| 500 } |
| 501 #endif |
| 502 if (t < cutlotime) |
| 503 t = cutlotime; |
| 504 tmp = my_localtime(&t); |
| 505 if (tmp != NULL) { |
| 506 tm = *tmp; |
| 507 (void) strncpy(buf, abbr(&tm), (sizeof buf) - 1); |
| 508 } |
| 509 for ( ; ; ) { |
| 510 if (t >= cuthitime || t >= cuthitime - SECSPERHOUR * 12) |
| 511 break; |
| 512 newt = t + SECSPERHOUR * 12; |
| 513 newtmp = localtime(&newt); |
| 514 if (newtmp != NULL) |
| 515 newtm = *newtmp; |
| 516 #ifdef ICU |
| 517 if (iflag) { |
| 518 /* We do not want to capture transitions just f
or |
| 519 * abbreviated zone name changes */ |
| 520 if ((tmp == NULL || newtmp == NULL) ? (tmp != ne
wtmp) : |
| 521 (delta(&newtm, &tm) != (newt - t) || |
| 522 newtm.tm_isdst != tm.tm_isdst)) { |
| 523 newt = huntICU(argv[i], t, newt,
fp); |
| 524 newtmp = localtime(&newt); |
| 525 if (newtmp != NULL) { |
| 526 newtm = *newtmp; |
| 527 (void) strncpy(buf, |
| 528 abbr(&newtm), |
| 529 (sizeof buf) - 1
); |
| 530 } |
| 531 } |
| 532 } else { |
| 533 #endif |
| 534 if ((tmp == NULL || newtmp == NULL) ? (tmp != newtmp) : |
| 535 (delta(&newtm, &tm) != (newt - t) || |
| 536 newtm.tm_isdst != tm.tm_isdst || |
| 537 strcmp(abbr(&newtm), buf) != 0)) { |
| 538 newt = hunt(argv[i], t, newt); |
| 539 newtmp = localtime(&newt); |
| 540 if (newtmp != NULL) { |
| 541 newtm = *newtmp; |
| 542 (void) strncpy(buf, |
| 543 abbr(&newtm), |
| 544 (sizeof buf) - 1); |
| 545 } |
| 546 } |
| 547 #ifdef ICU |
| 548 } |
| 549 #endif |
| 550 t = newt; |
| 551 tm = newtm; |
| 552 tmp = newtmp; |
| 553 } |
| 554 #ifdef ICU |
| 555 if (!iflag) { |
| 556 /* skip displaying info for the highest time, which is actually
not |
| 557 * a transition when -i option is used*/ |
| 558 #endif |
| 559 t = absolute_max_time; |
| 560 t -= SECSPERHOUR * HOURSPERDAY; |
| 561 show(argv[i], t, TRUE); |
| 562 t += SECSPERHOUR * HOURSPERDAY; |
| 563 show(argv[i], t, TRUE); |
| 564 |
| 565 #ifdef ICU |
| 566 } |
| 567 /* close file */ |
| 568 if (fp != NULL) { |
| 569 fclose(fp); |
| 570 } |
| 571 #endif |
| 572 } |
| 573 if (fflush(stdout) || ferror(stdout)) { |
| 574 (void) fprintf(stderr, "%s: ", progname); |
| 575 (void) perror(_("Error writing to standard output")); |
| 576 exit(EXIT_FAILURE); |
| 577 } |
| 578 #ifdef ICU |
| 579 if (aflag) { |
| 580 struct listentry * entry = namelist; |
| 581 struct listentry * next; |
| 582 while (entry != NULL) { |
| 583 free(entry->name); |
| 584 next = entry->next; |
| 585 free(entry); |
| 586 entry = next; |
| 587 } |
| 588 } |
| 589 #endif |
| 590 exit(EXIT_SUCCESS); |
| 591 /* If exit fails to exit... */ |
| 592 return EXIT_FAILURE; |
| 593 } |
| 594 |
| 595 static void |
| 596 setabsolutes(void) |
| 597 { |
| 598 if (0.5 == (time_t) 0.5) { |
| 599 /* |
| 600 ** time_t is floating. |
| 601 */ |
| 602 if (sizeof (time_t) == sizeof (float)) { |
| 603 absolute_min_time = (time_t) -FLT_MAX; |
| 604 absolute_max_time = (time_t) FLT_MAX; |
| 605 } else if (sizeof (time_t) == sizeof (double)) { |
| 606 absolute_min_time = (time_t) -DBL_MAX; |
| 607 absolute_max_time = (time_t) DBL_MAX; |
| 608 } else { |
| 609 (void) fprintf(stderr, |
| 610 _("%s: use of -v on system with floating time_t other than float or double\n"), |
| 611 progname); |
| 612 exit(EXIT_FAILURE); |
| 613 } |
| 614 } else if (0 > (time_t) -1) { |
| 615 /* |
| 616 ** time_t is signed. Assume overflow wraps around. |
| 617 */ |
| 618 time_t t = 0; |
| 619 time_t t1 = 1; |
| 620 |
| 621 while (t < t1) { |
| 622 t = t1; |
| 623 t1 = 2 * t1 + 1; |
| 624 } |
| 625 |
| 626 absolute_max_time = t; |
| 627 t = -t; |
| 628 absolute_min_time = t - 1; |
| 629 if (t < absolute_min_time) |
| 630 absolute_min_time = t; |
| 631 } else { |
| 632 /* |
| 633 ** time_t is unsigned. |
| 634 */ |
| 635 absolute_min_time = 0; |
| 636 absolute_max_time = absolute_min_time - 1; |
| 637 } |
| 638 } |
| 639 |
| 640 static time_t |
| 641 yeartot(y) |
| 642 const long y; |
| 643 { |
| 644 register long myy; |
| 645 register long seconds; |
| 646 register time_t t; |
| 647 |
| 648 myy = EPOCH_YEAR; |
| 649 t = 0; |
| 650 while (myy != y) { |
| 651 if (myy < y) { |
| 652 seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR; |
| 653 ++myy; |
| 654 if (t > absolute_max_time - seconds) { |
| 655 t = absolute_max_time; |
| 656 break; |
| 657 } |
| 658 t += seconds; |
| 659 } else { |
| 660 --myy; |
| 661 seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR; |
| 662 if (t < absolute_min_time + seconds) { |
| 663 t = absolute_min_time; |
| 664 break; |
| 665 } |
| 666 t -= seconds; |
| 667 } |
| 668 } |
| 669 return t; |
| 670 } |
| 671 |
| 672 static time_t |
| 673 hunt(char *name, time_t lot, time_t hit) |
| 674 { |
| 675 time_t t; |
| 676 long diff; |
| 677 struct tm lotm; |
| 678 register struct tm * lotmp; |
| 679 struct tm tm; |
| 680 register struct tm * tmp; |
| 681 char loab[MAX_STRING_LENGTH]; |
| 682 |
| 683 lotmp = my_localtime(&lot); |
| 684 if (lotmp != NULL) { |
| 685 lotm = *lotmp; |
| 686 (void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1); |
| 687 } |
| 688 for ( ; ; ) { |
| 689 diff = (long) (hit - lot); |
| 690 if (diff < 2) |
| 691 break; |
| 692 t = lot; |
| 693 t += diff / 2; |
| 694 if (t <= lot) |
| 695 ++t; |
| 696 else if (t >= hit) |
| 697 --t; |
| 698 tmp = my_localtime(&t); |
| 699 if (tmp != NULL) |
| 700 tm = *tmp; |
| 701 if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) : |
| 702 (delta(&tm, &lotm) == (t - lot) && |
| 703 tm.tm_isdst == lotm.tm_isdst && |
| 704 strcmp(abbr(&tm), loab) == 0)) { |
| 705 lot = t; |
| 706 lotm = tm; |
| 707 lotmp = tmp; |
| 708 } else hit = t; |
| 709 } |
| 710 show(name, lot, TRUE); |
| 711 show(name, hit, TRUE); |
| 712 return hit; |
| 713 } |
| 714 |
| 715 /* |
| 716 ** Thanks to Paul Eggert for logic used in delta. |
| 717 */ |
| 718 |
| 719 static long |
| 720 delta(newp, oldp) |
| 721 struct tm * newp; |
| 722 struct tm * oldp; |
| 723 { |
| 724 register long result; |
| 725 register int tmy; |
| 726 |
| 727 if (newp->tm_year < oldp->tm_year) |
| 728 return -delta(oldp, newp); |
| 729 result = 0; |
| 730 for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy) |
| 731 result += DAYSPERNYEAR + isleap_sum(tmy, TM_YEAR_BASE); |
| 732 result += newp->tm_yday - oldp->tm_yday; |
| 733 result *= HOURSPERDAY; |
| 734 result += newp->tm_hour - oldp->tm_hour; |
| 735 result *= MINSPERHOUR; |
| 736 result += newp->tm_min - oldp->tm_min; |
| 737 result *= SECSPERMIN; |
| 738 result += newp->tm_sec - oldp->tm_sec; |
| 739 return result; |
| 740 } |
| 741 |
| 742 static void |
| 743 show(char *zone, time_t t, int v) |
| 744 { |
| 745 register struct tm * tmp; |
| 746 |
| 747 (void) printf("%-*s ", (int) longest, zone); |
| 748 if (v) { |
| 749 tmp = gmtime(&t); |
| 750 if (tmp == NULL) { |
| 751 (void) printf(tformat(), t); |
| 752 } else { |
| 753 dumptime(tmp); |
| 754 (void) printf(" UTC"); |
| 755 } |
| 756 (void) printf(" = "); |
| 757 } |
| 758 tmp = my_localtime(&t); |
| 759 dumptime(tmp); |
| 760 if (tmp != NULL) { |
| 761 if (*abbr(tmp) != '\0') |
| 762 (void) printf(" %s", abbr(tmp)); |
| 763 if (v) { |
| 764 (void) printf(" isdst=%d", tmp->tm_isdst); |
| 765 #ifdef TM_GMTOFF |
| 766 (void) printf(" gmtoff=%ld", tmp->TM_GMTOFF); |
| 767 #endif /* defined TM_GMTOFF */ |
| 768 } |
| 769 } |
| 770 (void) printf("\n"); |
| 771 if (tmp != NULL && *abbr(tmp) != '\0') |
| 772 abbrok(abbr(tmp), zone); |
| 773 } |
| 774 |
| 775 static char * |
| 776 abbr(tmp) |
| 777 struct tm * tmp; |
| 778 { |
| 779 register char * result; |
| 780 static char nada; |
| 781 |
| 782 if (tmp->tm_isdst != 0 && tmp->tm_isdst != 1) |
| 783 return &nada; |
| 784 result = tzname[tmp->tm_isdst]; |
| 785 return (result == NULL) ? &nada : result; |
| 786 } |
| 787 |
| 788 /* |
| 789 ** The code below can fail on certain theoretical systems; |
| 790 ** it works on all known real-world systems as of 2004-12-30. |
| 791 */ |
| 792 |
| 793 static const char * |
| 794 tformat(void) |
| 795 { |
| 796 if (0.5 == (time_t) 0.5) { /* floating */ |
| 797 if (sizeof (time_t) > sizeof (double)) |
| 798 return "%Lg"; |
| 799 return "%g"; |
| 800 } |
| 801 if (0 > (time_t) -1) { /* signed */ |
| 802 if (sizeof (time_t) > sizeof (long)) |
| 803 return "%lld"; |
| 804 if (sizeof (time_t) > sizeof (int)) |
| 805 return "%ld"; |
| 806 return "%d"; |
| 807 } |
| 808 if (sizeof (time_t) > sizeof (unsigned long)) |
| 809 return "%llu"; |
| 810 if (sizeof (time_t) > sizeof (unsigned int)) |
| 811 return "%lu"; |
| 812 return "%u"; |
| 813 } |
| 814 |
| 815 static void |
| 816 dumptime(timeptr) |
| 817 register const struct tm * timeptr; |
| 818 { |
| 819 static const char wday_name[][3] = { |
| 820 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
| 821 }; |
| 822 static const char mon_name[][3] = { |
| 823 "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
| 824 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
| 825 }; |
| 826 register const char * wn; |
| 827 register const char * mn; |
| 828 register int lead; |
| 829 register int trail; |
| 830 |
| 831 if (timeptr == NULL) { |
| 832 (void) printf("NULL"); |
| 833 return; |
| 834 } |
| 835 /* |
| 836 ** The packaged versions of localtime and gmtime never put out-of-range |
| 837 ** values in tm_wday or tm_mon, but since this code might be compiled |
| 838 ** with other (perhaps experimental) versions, paranoia is in order. |
| 839 */ |
| 840 if (timeptr->tm_wday < 0 || timeptr->tm_wday >= |
| 841 (int) (sizeof wday_name / sizeof wday_name[0])) |
| 842 wn = "???"; |
| 843 else wn = wday_name[timeptr->tm_wday]; |
| 844 if (timeptr->tm_mon < 0 || timeptr->tm_mon >= |
| 845 (int) (sizeof mon_name / sizeof mon_name[0])) |
| 846 mn = "???"; |
| 847 else mn = mon_name[timeptr->tm_mon]; |
| 848 (void) printf("%.3s %.3s%3d %.2d:%.2d:%.2d ", |
| 849 wn, mn, |
| 850 timeptr->tm_mday, timeptr->tm_hour, |
| 851 timeptr->tm_min, timeptr->tm_sec); |
| 852 #define DIVISOR 10 |
| 853 trail = timeptr->tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR; |
| 854 lead = timeptr->tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR + |
| 855 trail / DIVISOR; |
| 856 trail %= DIVISOR; |
| 857 if (trail < 0 && lead > 0) { |
| 858 trail += DIVISOR; |
| 859 --lead; |
| 860 } else if (lead < 0 && trail > 0) { |
| 861 trail -= DIVISOR; |
| 862 ++lead; |
| 863 } |
| 864 if (lead == 0) |
| 865 (void) printf("%d", trail); |
| 866 else (void) printf("%d%d", lead, ((trail < 0) ? -trail : trail)); |
| 867 } |
| 868 |
| 869 #ifdef ICU |
| 870 static time_t |
| 871 huntICU(char *name, time_t lot, time_t hit, FILE * fp) |
| 872 { |
| 873 time_t t; |
| 874 long diff; |
| 875 struct tm lotm; |
| 876 register struct tm * lotmp; |
| 877 struct tm tm; |
| 878 register struct tm * tmp; |
| 879 char loab[MAX_STRING_LENGTH]; |
| 880 |
| 881 lotmp = my_localtime(&lot); |
| 882 if (lotmp != NULL) { |
| 883 lotm = *lotmp; |
| 884 (void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1); |
| 885 } |
| 886 for ( ; ; ) { |
| 887 diff = (long) (hit - lot); |
| 888 if (diff < 2) |
| 889 break; |
| 890 t = lot; |
| 891 t += diff / 2; |
| 892 if (t <= lot) |
| 893 ++t; |
| 894 else if (t >= hit) |
| 895 --t; |
| 896 tmp = my_localtime(&t); |
| 897 if (tmp != NULL) |
| 898 tm = *tmp; |
| 899 /* We do not want to capture transitions just for |
| 900 * abbreviated zone name changes */ |
| 901 if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) : |
| 902 (delta(&tm, &lotm) == (t - lot) && |
| 903 tm.tm_isdst == lotm.tm_isdst)) { |
| 904 lot = t; |
| 905 lotm = tm; |
| 906 lotmp = tmp; |
| 907 } else hit = t; |
| 908 } |
| 909 showICU(fp, name, lot, hit); |
| 910 return hit; |
| 911 } |
| 912 |
| 913 static void showICU(FILE * fp, char *zone, time_t t1, time_t t2) |
| 914 { |
| 915 if (fp == NULL) { |
| 916 fp = stdout; |
| 917 } |
| 918 dumptimeICU(fp, t1); |
| 919 fprintf(fp, " > "); |
| 920 dumptimeICU(fp, t2); |
| 921 fprintf(fp, "\n"); |
| 922 } |
| 923 |
| 924 static void dumptimeICU(FILE * fp, time_t t) |
| 925 { |
| 926 static const char wday_name[][3] = { |
| 927 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
| 928 }; |
| 929 struct tm gmt; |
| 930 struct tm loc; |
| 931 register int lead; |
| 932 register int trail; |
| 933 long offset; |
| 934 long hour, min, sec; |
| 935 |
| 936 loc = *my_localtime(&t); |
| 937 |
| 938 trail = loc.tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR; |
| 939 lead = loc.tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR + trail / DIVISOR; |
| 940 trail %= DIVISOR; |
| 941 if (trail < 0 && lead > 0) { |
| 942 trail += DIVISOR; |
| 943 --lead; |
| 944 } else if (lead < 0 && trail > 0) { |
| 945 trail -= DIVISOR; |
| 946 ++lead; |
| 947 } |
| 948 |
| 949 fprintf(fp, "%04d-%02d-%02d", lead * DIVISOR + trail, loc.tm_mon + 1, lo
c.tm_mday); |
| 950 fprintf(fp, " %.3s ", wday_name[loc.tm_wday]); |
| 951 fprintf(fp, "%02d:%02d:%02d", loc.tm_hour, loc.tm_min, loc.tm_sec); |
| 952 |
| 953 gmt = *gmtime(&t); |
| 954 offset = delta(&loc, &gmt); |
| 955 if (offset < 0) { |
| 956 offset = -offset; |
| 957 fprintf(fp, "-"); |
| 958 } else { |
| 959 fprintf(fp, "+"); |
| 960 } |
| 961 |
| 962 sec = offset % 60; |
| 963 offset = (offset - sec) / 60; |
| 964 min = offset % 60; |
| 965 hour = offset / 60; |
| 966 |
| 967 fprintf(fp, "%02d", hour); |
| 968 fprintf(fp, "%02d", min); |
| 969 fprintf(fp, "%02d", sec); |
| 970 fprintf(fp, "[DST=%d]", loc.tm_isdst); |
| 971 } |
| 972 |
| 973 static int getall(struct listentry ** namelist) { |
| 974 int count = 0; |
| 975 struct listentry dummyentry; |
| 976 struct listentry * last = &dummyentry; |
| 977 |
| 978 getzones(TZDIR, NULL, &last, &count); |
| 979 if (count > 0) { |
| 980 *namelist = dummyentry.next; |
| 981 } |
| 982 |
| 983 return count; |
| 984 } |
| 985 |
| 986 static void getzones(char * basedir, char * relpath, struct listentry ** last, i
nt * count) { |
| 987 char path[FILENAME_MAX + 1]; |
| 988 struct dirent * dir; |
| 989 DIR * dp; |
| 990 |
| 991 strcpy(path, basedir); |
| 992 if (relpath != NULL) { |
| 993 strcat(path, "/"); |
| 994 strcat(path, relpath); |
| 995 } |
| 996 |
| 997 if ((dp = opendir(path)) == NULL) { |
| 998 /* file */ |
| 999 if (strstr(relpath, ".tab") == NULL) { |
| 1000 char * pzonename; |
| 1001 listentry * pentry; |
| 1002 |
| 1003 if ((pzonename = malloc(strlen(relpath) + 1)) == NULL) { |
| 1004 exit(EXIT_FAILURE); |
| 1005 } |
| 1006 strcpy(pzonename, relpath); |
| 1007 |
| 1008 if ((pentry = malloc(sizeof(listentry))) == NULL) { |
| 1009 exit(EXIT_FAILURE); |
| 1010 } |
| 1011 |
| 1012 pentry->name = pzonename; |
| 1013 pentry->next = NULL; |
| 1014 (*last)->next = pentry; |
| 1015 *last = pentry; |
| 1016 (*count)++; |
| 1017 } |
| 1018 } else { |
| 1019 /* directory */ |
| 1020 while ((dir = readdir(dp)) != NULL) { |
| 1021 char subpath[FILENAME_MAX + 1]; |
| 1022 |
| 1023 if (strcmp(dir->d_name, ".") == 0 |
| 1024 || strcmp(dir->d_name, "..") == 0) { |
| 1025 continue; |
| 1026 } |
| 1027 if (relpath != NULL) { |
| 1028 strcpy(subpath, relpath); |
| 1029 strcat(subpath, "/"); |
| 1030 strcat(subpath, dir->d_name); |
| 1031 } else { |
| 1032 strcpy(subpath, dir->d_name); |
| 1033 } |
| 1034 getzones(basedir, subpath, last, count); |
| 1035 } |
| 1036 closedir(dp); |
| 1037 } |
| 1038 } |
| 1039 #endif |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 5516007:
Check in the pristine copy of ICU 4.6... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/