1 /* $OpenBSD: strftime.c,v 1.22 2014/05/06 15:49:45 tedu Exp $ */ 2 #include "private.h" 3 4 /* 5 ** Copyright (c) 1989, 1993 6 ** The Regents of the University of California. All rights reserved. 7 ** 8 ** Redistribution and use in source and binary forms, with or without 9 ** modification, are permitted provided that the following conditions 10 ** are met: 11 ** 1. Redistributions of source code must retain the above copyright 12 ** notice, this list of conditions and the following disclaimer. 13 ** 2. Redistributions in binary form must reproduce the above copyright 14 ** notice, this list of conditions and the following disclaimer in the 15 ** documentation and/or other materials provided with the distribution. 16 ** 3. Neither the name of the University nor the names of its contributors 17 ** may be used to endorse or promote products derived from this software 18 ** without specific prior written permission. 19 ** 20 ** THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ** ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 ** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 ** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 ** SUCH DAMAGE. 31 */ 32 33 #include "tzfile.h" 34 #include "fcntl.h" 35 #include "locale.h" 36 37 struct lc_time_T { 38 const char * mon[MONSPERYEAR]; 39 const char * month[MONSPERYEAR]; 40 const char * wday[DAYSPERWEEK]; 41 const char * weekday[DAYSPERWEEK]; 42 const char * X_fmt; 43 const char * x_fmt; 44 const char * c_fmt; 45 const char * am; 46 const char * pm; 47 const char * date_fmt; 48 }; 49 50 #ifdef LOCALE_HOME 51 #include "sys/stat.h" 52 static struct lc_time_T localebuf; 53 static struct lc_time_T * _loc(void); 54 #define Locale _loc() 55 #endif /* defined LOCALE_HOME */ 56 #ifndef LOCALE_HOME 57 #define Locale (&C_time_locale) 58 #endif /* !defined LOCALE_HOME */ 59 60 static const struct lc_time_T C_time_locale = { 61 { 62 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 63 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 64 }, { 65 "January", "February", "March", "April", "May", "June", 66 "July", "August", "September", "October", "November", "December" 67 }, { 68 "Sun", "Mon", "Tue", "Wed", 69 "Thu", "Fri", "Sat" 70 }, { 71 "Sunday", "Monday", "Tuesday", "Wednesday", 72 "Thursday", "Friday", "Saturday" 73 }, 74 75 /* X_fmt */ 76 "%H:%M:%S", 77 78 /* 79 ** x_fmt 80 ** C99 requires this format. 81 ** Using just numbers (as here) makes Quakers happier; 82 ** it's also compatible with SVR4. 83 */ 84 "%m/%d/%y", 85 86 /* 87 ** c_fmt 88 ** C99 requires this format. 89 ** Previously this code used "%D %X", but we now conform to C99. 90 ** Note that 91 ** "%a %b %d %H:%M:%S %Y" 92 ** is used by Solaris 2.3. 93 */ 94 "%a %b %e %T %Y", 95 96 /* am */ 97 "AM", 98 99 /* pm */ 100 "PM", 101 102 /* date_fmt */ 103 "%a %b %e %H:%M:%S %Z %Y" 104 }; 105 106 static char * _add(const char *, char *, const char *); 107 static char * _conv(int, const char *, char *, const char *); 108 static char * _fmt(const char *, const struct tm *, char *, const char *, 109 int *); 110 static char * _yconv(int, int, int, int, char *, const char *); 111 112 extern char * tzname[]; 113 114 #define IN_NONE 0 115 #define IN_SOME 1 116 #define IN_THIS 2 117 #define IN_ALL 3 118 119 size_t 120 strftime(s, maxsize, format, t) 121 char * const s; 122 const size_t maxsize; 123 const char * const format; 124 const struct tm * const t; 125 { 126 char * p; 127 int warn; 128 129 tzset(); 130 #ifdef LOCALE_HOME 131 localebuf.mon[0] = 0; 132 #endif /* defined LOCALE_HOME */ 133 warn = IN_NONE; 134 p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn); 135 if (p == s + maxsize) { 136 if (maxsize > 0) 137 s[maxsize - 1] = '\0'; 138 return 0; 139 } 140 *p = '\0'; 141 return p - s; 142 } 143 144 static char * 145 _fmt(format, t, pt, ptlim, warnp) 146 const char * format; 147 const struct tm * const t; 148 char * pt; 149 const char * const ptlim; 150 int * warnp; 151 { 152 for ( ; *format; ++format) { 153 if (*format == '%') { 154 label: 155 switch (*++format) { 156 case '\0': 157 --format; 158 break; 159 case 'A': 160 pt = _add((t->tm_wday < 0 || 161 t->tm_wday >= DAYSPERWEEK) ? 162 "?" : Locale->weekday[t->tm_wday], 163 pt, ptlim); 164 continue; 165 case 'a': 166 pt = _add((t->tm_wday < 0 || 167 t->tm_wday >= DAYSPERWEEK) ? 168 "?" : Locale->wday[t->tm_wday], 169 pt, ptlim); 170 continue; 171 case 'B': 172 pt = _add((t->tm_mon < 0 || 173 t->tm_mon >= MONSPERYEAR) ? 174 "?" : Locale->month[t->tm_mon], 175 pt, ptlim); 176 continue; 177 case 'b': 178 case 'h': 179 pt = _add((t->tm_mon < 0 || 180 t->tm_mon >= MONSPERYEAR) ? 181 "?" : Locale->mon[t->tm_mon], 182 pt, ptlim); 183 continue; 184 case 'C': 185 /* 186 ** %C used to do a... 187 ** _fmt("%a %b %e %X %Y", t); 188 ** ...whereas now POSIX 1003.2 calls for 189 ** something completely different. 190 ** (ado, 1993-05-24) 191 */ 192 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0, 193 pt, ptlim); 194 continue; 195 case 'c': 196 { 197 int warn2 = IN_SOME; 198 199 pt = _fmt(Locale->c_fmt, t, pt, ptlim, &warn2); 200 if (warn2 == IN_ALL) 201 warn2 = IN_THIS; 202 if (warn2 > *warnp) 203 *warnp = warn2; 204 } 205 continue; 206 case 'D': 207 pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp); 208 continue; 209 case 'd': 210 pt = _conv(t->tm_mday, "%02d", pt, ptlim); 211 continue; 212 case 'E': 213 case 'O': 214 /* 215 ** C99 locale modifiers. 216 ** The sequences 217 ** %Ec %EC %Ex %EX %Ey %EY 218 ** %Od %oe %OH %OI %Om %OM 219 ** %OS %Ou %OU %OV %Ow %OW %Oy 220 ** are supposed to provide alternate 221 ** representations. 222 */ 223 goto label; 224 case 'e': 225 pt = _conv(t->tm_mday, "%2d", pt, ptlim); 226 continue; 227 case 'F': 228 pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp); 229 continue; 230 case 'H': 231 pt = _conv(t->tm_hour, "%02d", pt, ptlim); 232 continue; 233 case 'I': 234 pt = _conv((t->tm_hour % 12) ? 235 (t->tm_hour % 12) : 12, 236 "%02d", pt, ptlim); 237 continue; 238 case 'j': 239 pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim); 240 continue; 241 case 'k': 242 /* 243 ** This used to be... 244 ** _conv(t->tm_hour % 12 ? 245 ** t->tm_hour % 12 : 12, 2, ' '); 246 ** ...and has been changed to the below to 247 ** match SunOS 4.1.1 and Arnold Robbins' 248 ** strftime version 3.0. That is, "%k" and 249 ** "%l" have been swapped. 250 ** (ado, 1993-05-24) 251 */ 252 pt = _conv(t->tm_hour, "%2d", pt, ptlim); 253 continue; 254 #ifdef KITCHEN_SINK 255 case 'K': 256 /* 257 ** After all this time, still unclaimed! 258 */ 259 pt = _add("kitchen sink", pt, ptlim); 260 continue; 261 #endif /* defined KITCHEN_SINK */ 262 case 'l': 263 /* 264 ** This used to be... 265 ** _conv(t->tm_hour, 2, ' '); 266 ** ...and has been changed to the below to 267 ** match SunOS 4.1.1 and Arnold Robbin's 268 ** strftime version 3.0. That is, "%k" and 269 ** "%l" have been swapped. 270 ** (ado, 1993-05-24) 271 */ 272 pt = _conv((t->tm_hour % 12) ? 273 (t->tm_hour % 12) : 12, 274 "%2d", pt, ptlim); 275 continue; 276 case 'M': 277 pt = _conv(t->tm_min, "%02d", pt, ptlim); 278 continue; 279 case 'm': 280 pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim); 281 continue; 282 case 'n': 283 pt = _add("\n", pt, ptlim); 284 continue; 285 case 'p': 286 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ? 287 Locale->pm : 288 Locale->am, 289 pt, ptlim); 290 continue; 291 case 'R': 292 pt = _fmt("%H:%M", t, pt, ptlim, warnp); 293 continue; 294 case 'r': 295 pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp); 296 continue; 297 case 'S': 298 pt = _conv(t->tm_sec, "%02d", pt, ptlim); 299 continue; 300 case 's': 301 { 302 struct tm tm; 303 char buf[INT_STRLEN_MAXIMUM( 304 time_t) + 1]; 305 time_t mkt; 306 307 tm = *t; 308 mkt = mktime(&tm); 309 if (TYPE_SIGNED(time_t)) 310 (void) snprintf(buf, sizeof buf, 311 "%ld", (long) mkt); 312 else (void) snprintf(buf, sizeof buf, 313 "%lu", (unsigned long) mkt); 314 pt = _add(buf, pt, ptlim); 315 } 316 continue; 317 case 'T': 318 pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp); 319 continue; 320 case 't': 321 pt = _add("\t", pt, ptlim); 322 continue; 323 case 'U': 324 pt = _conv((t->tm_yday + DAYSPERWEEK - 325 t->tm_wday) / DAYSPERWEEK, 326 "%02d", pt, ptlim); 327 continue; 328 case 'u': 329 /* 330 ** From Arnold Robbins' strftime version 3.0: 331 ** "ISO 8601: Weekday as a decimal number 332 ** [1 (Monday) - 7]" 333 ** (ado, 1993-05-24) 334 */ 335 pt = _conv((t->tm_wday == 0) ? 336 DAYSPERWEEK : t->tm_wday, 337 "%d", pt, ptlim); 338 continue; 339 case 'V': /* ISO 8601 week number */ 340 case 'G': /* ISO 8601 year (four digits) */ 341 case 'g': /* ISO 8601 year (two digits) */ 342 /* 343 ** From Arnold Robbins' strftime version 3.0: "the week number of the 344 ** year (the first Monday as the first day of week 1) as a decimal number 345 ** (01-53)." 346 ** (ado, 1993-05-24) 347 ** 348 ** From "http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html" by Markus Kuhn: 349 ** "Week 01 of a year is per definition the first week which has the 350 ** Thursday in this year, which is equivalent to the week which contains 351 ** the fourth day of January. In other words, the first week of a new year 352 ** is the week which has the majority of its days in the new year. Week 01 353 ** might also contain days from the previous year and the week before week 354 ** 01 of a year is the last week (52 or 53) of the previous year even if 355 ** it contains days from the new year. A week starts with Monday (day 1) 356 ** and ends with Sunday (day 7). For example, the first week of the year 357 ** 1997 lasts from 1996-12-30 to 1997-01-05..." 358 ** (ado, 1996-01-02) 359 */ 360 { 361 int year; 362 int base; 363 int yday; 364 int wday; 365 int w; 366 367 year = t->tm_year; 368 base = TM_YEAR_BASE; 369 yday = t->tm_yday; 370 wday = t->tm_wday; 371 for ( ; ; ) { 372 int len; 373 int bot; 374 int top; 375 376 len = isleap_sum(year, base) ? 377 DAYSPERLYEAR : 378 DAYSPERNYEAR; 379 /* 380 ** What yday (-3 ... 3) does 381 ** the ISO year begin on? 382 */ 383 bot = ((yday + 11 - wday) % 384 DAYSPERWEEK) - 3; 385 /* 386 ** What yday does the NEXT 387 ** ISO year begin on? 388 */ 389 top = bot - 390 (len % DAYSPERWEEK); 391 if (top < -3) 392 top += DAYSPERWEEK; 393 top += len; 394 if (yday >= top) { 395 ++base; 396 w = 1; 397 break; 398 } 399 if (yday >= bot) { 400 w = 1 + ((yday - bot) / 401 DAYSPERWEEK); 402 break; 403 } 404 --base; 405 yday += isleap_sum(year, base) ? 406 DAYSPERLYEAR : 407 DAYSPERNYEAR; 408 } 409 #ifdef XPG4_1994_04_09 410 if ((w == 52 && 411 t->tm_mon == TM_JANUARY) || 412 (w == 1 && 413 t->tm_mon == TM_DECEMBER)) 414 w = 53; 415 #endif /* defined XPG4_1994_04_09 */ 416 if (*format == 'V') 417 pt = _conv(w, "%02d", 418 pt, ptlim); 419 else if (*format == 'g') { 420 *warnp = IN_ALL; 421 pt = _yconv(year, base, 0, 1, 422 pt, ptlim); 423 } else pt = _yconv(year, base, 1, 1, 424 pt, ptlim); 425 } 426 continue; 427 case 'v': 428 /* 429 ** From Arnold Robbins' strftime version 3.0: 430 ** "date as dd-bbb-YYYY" 431 ** (ado, 1993-05-24) 432 */ 433 pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp); 434 continue; 435 case 'W': 436 pt = _conv((t->tm_yday + DAYSPERWEEK - 437 (t->tm_wday ? 438 (t->tm_wday - 1) : 439 (DAYSPERWEEK - 1))) / DAYSPERWEEK, 440 "%02d", pt, ptlim); 441 continue; 442 case 'w': 443 pt = _conv(t->tm_wday, "%d", pt, ptlim); 444 continue; 445 case 'X': 446 pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp); 447 continue; 448 case 'x': 449 { 450 int warn2 = IN_SOME; 451 452 pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2); 453 if (warn2 == IN_ALL) 454 warn2 = IN_THIS; 455 if (warn2 > *warnp) 456 *warnp = warn2; 457 } 458 continue; 459 case 'y': 460 *warnp = IN_ALL; 461 pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1, 462 pt, ptlim); 463 continue; 464 case 'Y': 465 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1, 466 pt, ptlim); 467 continue; 468 case 'Z': 469 #ifdef TM_ZONE 470 if (t->TM_ZONE != NULL) 471 pt = _add(t->TM_ZONE, pt, ptlim); 472 else 473 #endif /* defined TM_ZONE */ 474 if (t->tm_isdst >= 0) 475 pt = _add(tzname[t->tm_isdst != 0], 476 pt, ptlim); 477 /* 478 ** C99 says that %Z must be replaced by the 479 ** empty string if the time zone is not 480 ** determinable. 481 */ 482 continue; 483 case 'z': 484 { 485 int diff; 486 char const * sign; 487 488 if (t->tm_isdst < 0) 489 continue; 490 #ifdef TM_GMTOFF 491 diff = t->TM_GMTOFF; 492 #else /* !defined TM_GMTOFF */ 493 /* 494 ** C99 says that the UTC offset must 495 ** be computed by looking only at 496 ** tm_isdst. This requirement is 497 ** incorrect, since it means the code 498 ** must rely on magic (in this case 499 ** altzone and timezone), and the 500 ** magic might not have the correct 501 ** offset. Doing things correctly is 502 ** tricky and requires disobeying C99; 503 ** see GNU C strftime for details. 504 ** For now, punt and conform to the 505 ** standard, even though it's incorrect. 506 ** 507 ** C99 says that %z must be replaced by the 508 ** empty string if the time zone is not 509 ** determinable, so output nothing if the 510 ** appropriate variables are not available. 511 */ 512 if (t->tm_isdst == 0) 513 #ifdef USG_COMPAT 514 diff = -timezone; 515 #else /* !defined USG_COMPAT */ 516 continue; 517 #endif /* !defined USG_COMPAT */ 518 else 519 #ifdef ALTZONE 520 diff = -altzone; 521 #else /* !defined ALTZONE */ 522 continue; 523 #endif /* !defined ALTZONE */ 524 #endif /* !defined TM_GMTOFF */ 525 if (diff < 0) { 526 sign = "-"; 527 diff = -diff; 528 } else sign = "+"; 529 pt = _add(sign, pt, ptlim); 530 diff /= SECSPERMIN; 531 diff = (diff / MINSPERHOUR) * 100 + 532 (diff % MINSPERHOUR); 533 pt = _conv(diff, "%04d", pt, ptlim); 534 } 535 continue; 536 case '+': 537 pt = _fmt(Locale->date_fmt, t, pt, ptlim, 538 warnp); 539 continue; 540 case '%': 541 /* 542 ** X311J/88-090 (4.12.3.5): if conversion char is 543 ** undefined, behavior is undefined. Print out the 544 ** character itself as printf(3) also does. 545 */ 546 default: 547 break; 548 } 549 } 550 if (pt == ptlim) 551 break; 552 *pt++ = *format; 553 } 554 return pt; 555 } 556 557 static char * 558 _conv(n, format, pt, ptlim) 559 const int n; 560 const char * const format; 561 char * const pt; 562 const char * const ptlim; 563 { 564 char buf[INT_STRLEN_MAXIMUM(int) + 1]; 565 566 (void) snprintf(buf, sizeof buf, format, n); 567 return _add(buf, pt, ptlim); 568 } 569 570 static char * 571 _add(str, pt, ptlim) 572 const char * str; 573 char * pt; 574 const char * const ptlim; 575 { 576 while (pt < ptlim && (*pt = *str++) != '\0') 577 ++pt; 578 return pt; 579 } 580 581 /* 582 ** POSIX and the C Standard are unclear or inconsistent about 583 ** what %C and %y do if the year is negative or exceeds 9999. 584 ** Use the convention that %C concatenated with %y yields the 585 ** same output as %Y, and that %Y contains at least 4 bytes, 586 ** with more only if necessary. 587 */ 588 589 static char * 590 _yconv(a, b, convert_top, convert_yy, pt, ptlim) 591 const int a; 592 const int b; 593 const int convert_top; 594 const int convert_yy; 595 char * pt; 596 const char * const ptlim; 597 { 598 register int lead; 599 register int trail; 600 601 #define DIVISOR 100 602 trail = a % DIVISOR + b % DIVISOR; 603 lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR; 604 trail %= DIVISOR; 605 if (trail < 0 && lead > 0) { 606 trail += DIVISOR; 607 --lead; 608 } else if (lead < 0 && trail > 0) { 609 trail -= DIVISOR; 610 ++lead; 611 } 612 if (convert_top) { 613 if (lead == 0 && trail < 0) 614 pt = _add("-0", pt, ptlim); 615 else pt = _conv(lead, "%02d", pt, ptlim); 616 } 617 if (convert_yy) 618 pt = _conv(((trail < 0) ? -trail : trail), "%02d", pt, ptlim); 619 return pt; 620 } 621 622 #ifdef LOCALE_HOME 623 static struct lc_time_T * 624 _loc(void) 625 { 626 static const char locale_home[] = LOCALE_HOME; 627 static const char lc_time[] = "LC_TIME"; 628 static char * locale_buf; 629 630 int fd; 631 int oldsun; /* "...ain't got nothin' to do..." */ 632 int len; 633 char * lbuf; 634 char * nlbuf; 635 char * name; 636 char * p; 637 const char ** ap; 638 const char * plim; 639 char filename[FILENAME_MAX]; 640 struct stat st; 641 size_t namesize; 642 size_t bufsize; 643 644 /* 645 ** Use localebuf.mon[0] to signal whether locale is already set up. 646 */ 647 if (localebuf.mon[0]) 648 return &localebuf; 649 name = setlocale(LC_TIME, (char *) NULL); 650 if (name == NULL || *name == '\0') 651 goto no_locale; 652 /* 653 ** If the locale name is the same as our cache, use the cache. 654 */ 655 lbuf = locale_buf; 656 if (lbuf != NULL && strcmp(name, lbuf) == 0) { 657 p = lbuf; 658 for (ap = (const char **) &localebuf; 659 ap < (const char **) (&localebuf + 1); 660 ++ap) 661 *ap = p += strlen(p) + 1; 662 return &localebuf; 663 } 664 /* 665 ** Slurp the locale file into the cache. 666 */ 667 namesize = strlen(name) + 1; 668 if (sizeof filename < 669 ((sizeof locale_home) + namesize + (sizeof lc_time))) 670 goto no_locale; 671 oldsun = 0; 672 len = snprintf(filename, sizeof filename, "%s/%s/%s", locale_home, 673 name, lc_time); 674 if (len < 0 || len >= sizeof filename) 675 goto no_locale; 676 fd = open(filename, O_RDONLY); 677 if (fd < 0) { 678 /* 679 ** Old Sun systems have a different naming and data convention. 680 */ 681 oldsun = 1; 682 len = snprintf(filename, sizeof filename, "%s/%s/%s", 683 locale_home, lc_time, name); 684 if (len < 0 || len >= sizeof filename) 685 goto no_locale; 686 fd = open(filename, O_RDONLY); 687 if (fd < 0) 688 goto no_locale; 689 } 690 if (fstat(fd, &st) != 0) 691 goto bad_locale; 692 if (st.st_size <= 0) 693 goto bad_locale; 694 bufsize = namesize + st.st_size; 695 locale_buf = NULL; 696 nlbuf = (lbuf == NULL) ? malloc(bufsize) : realloc(lbuf, bufsize); 697 if (nlbuf == NULL) { 698 if (lbuf) 699 free(lbuf); 700 lbuf = NULL; 701 goto bad_locale; 702 } 703 lbuf = nlbuf; 704 (void) strlcpy(lbuf, name, bufsize); 705 p = lbuf + namesize; 706 plim = p + st.st_size; 707 if (read(fd, p, (size_t) st.st_size) != st.st_size) 708 goto bad_lbuf; 709 if (close(fd) != 0) 710 goto bad_lbuf; 711 /* 712 ** Parse the locale file into localebuf. 713 */ 714 if (plim[-1] != '\n') 715 goto bad_lbuf; 716 for (ap = (const char **) &localebuf; 717 ap < (const char **) (&localebuf + 1); 718 ++ap) { 719 if (p == plim) 720 goto bad_lbuf; 721 *ap = p; 722 while (*p != '\n') 723 ++p; 724 *p++ = '\0'; 725 } 726 if (oldsun) { 727 /* 728 ** SunOS 4 used an obsolescent format; see localdtconv(3). 729 ** c_fmt had the ``short format for dates and times together'' 730 ** (SunOS 4 date, "%a %b %e %T %Z %Y" in the C locale); 731 ** date_fmt had the ``long format for dates'' 732 ** (SunOS 4 strftime %C, "%A, %B %e, %Y" in the C locale). 733 ** Discard the latter in favor of the former. 734 */ 735 localebuf.date_fmt = localebuf.c_fmt; 736 } 737 /* 738 ** Record the successful parse in the cache. 739 */ 740 locale_buf = lbuf; 741 742 return &localebuf; 743 744 bad_lbuf: 745 free(lbuf); 746 bad_locale: 747 (void) close(fd); 748 no_locale: 749 localebuf = C_time_locale; 750 locale_buf = NULL; 751 return &localebuf; 752 } 753 #endif /* defined LOCALE_HOME */ 754