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Import of original zoneinfo code and database - tzcode
[minix3.git] / commands / zoneinfo / strftime.c
blobaf328ce54724ca7326d99c43f3291a6bd7b589ad
1 #ifndef lint
2 #ifndef NOID
3 static char elsieid[] = "@(#)strftime.c 7.75";
4 /*
5 ** Based on the UCB version with the ID appearing below.
6 ** This is ANSIish only when "multibyte character == plain character".
7 */
8 #endif /* !defined NOID */
9 #endif /* !defined lint */
10
11 #include "private.h"
12
13 /*
14 ** Copyright (c) 1989 The Regents of the University of California.
15 ** All rights reserved.
16 **
17 ** Redistribution and use in source and binary forms are permitted
18 ** provided that the above copyright notice and this paragraph are
19 ** duplicated in all such forms and that any documentation,
20 ** advertising materials, and other materials related to such
21 ** distribution and use acknowledge that the software was developed
22 ** by the University of California, Berkeley. The name of the
23 ** University may not be used to endorse or promote products derived
24 ** from this software without specific prior written permission.
25 ** THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
26 ** IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
27 ** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
28 */
29
30 #ifndef LIBC_SCCS
31 #ifndef lint
32 static const char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89";
33 #endif /* !defined lint */
34 #endif /* !defined LIBC_SCCS */
35
36 #include "tzfile.h"
37 #include "fcntl.h"
38 #include "locale.h"
39
40 struct lc_time_T {
41 const char * mon[MONSPERYEAR];
42 const char * month[MONSPERYEAR];
43 const char * wday[DAYSPERWEEK];
44 const char * weekday[DAYSPERWEEK];
45 const char * X_fmt;
46 const char * x_fmt;
47 const char * c_fmt;
48 const char * am;
49 const char * pm;
50 const char * date_fmt;
51 };
52
53 #ifdef LOCALE_HOME
54 #include "sys/stat.h"
55 static struct lc_time_T localebuf;
56 static struct lc_time_T * _loc P((void));
57 #define Locale _loc()
58 #endif /* defined LOCALE_HOME */
59 #ifndef LOCALE_HOME
60 #define Locale (&C_time_locale)
61 #endif /* !defined LOCALE_HOME */
62
63 static const struct lc_time_T C_time_locale = {
64 {
65 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
66 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
67 }, {
68 "January", "February", "March", "April", "May", "June",
69 "July", "August", "September", "October", "November", "December"
70 }, {
71 "Sun", "Mon", "Tue", "Wed",
72 "Thu", "Fri", "Sat"
73 }, {
74 "Sunday", "Monday", "Tuesday", "Wednesday",
75 "Thursday", "Friday", "Saturday"
76 },
77
78 /* X_fmt */
79 "%H:%M:%S",
80
81 /*
82 ** x_fmt
83 ** C99 requires this format.
84 ** Using just numbers (as here) makes Quakers happier;
85 ** it's also compatible with SVR4.
86 */
87 "%m/%d/%y",
88
89 /*
90 ** c_fmt
91 ** C99 requires this format.
92 ** Previously this code used "%D %X", but we now conform to C99.
93 ** Note that
94 ** "%a %b %d %H:%M:%S %Y"
95 ** is used by Solaris 2.3.
96 */
97 "%a %b %e %T %Y",
98
99 /* am */
100 "AM",
101
102 /* pm */
103 "PM",
104
105 /* date_fmt */
106 "%a %b %e %H:%M:%S %Z %Y"
107 };
108
109 static char * _add P((const char *, char *, const char *));
110 static char * _conv P((int, const char *, char *, const char *));
111 static char * _fmt P((const char *, const struct tm *, char *, const char *,
112 int *));
113 static char * _yconv P((int, int, int, int, char *, const char *));
114
115 extern char * tzname[];
116
117 #ifndef YEAR_2000_NAME
118 #define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS"
119 #endif /* !defined YEAR_2000_NAME */
120
121 #define IN_NONE 0
122 #define IN_SOME 1
123 #define IN_THIS 2
124 #define IN_ALL 3
125
126 size_t
127 strftime(s, maxsize, format, t)
128 char * const s;
129 const size_t maxsize;
130 const char * const format;
131 const struct tm * const t;
132 {
133 char * p;
134 int warn;
135
136 tzset();
137 #ifdef LOCALE_HOME
138 localebuf.mon[0] = 0;
139 #endif /* defined LOCALE_HOME */
140 warn = IN_NONE;
141 p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn);
142 #ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU
143 if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) {
144 (void) fprintf(stderr, "\n");
145 if (format == NULL)
146 (void) fprintf(stderr, "NULL strftime format ");
147 else (void) fprintf(stderr, "strftime format \"%s\" ",
148 format);
149 (void) fprintf(stderr, "yields only two digits of years in ");
150 if (warn == IN_SOME)
151 (void) fprintf(stderr, "some locales");
152 else if (warn == IN_THIS)
153 (void) fprintf(stderr, "the current locale");
154 else (void) fprintf(stderr, "all locales");
155 (void) fprintf(stderr, "\n");
156 }
157 #endif /* !defined NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */
158 if (p == s + maxsize)
159 return 0;
160 *p = '\0';
161 return p - s;
162 }
163
164 static char *
165 _fmt(format, t, pt, ptlim, warnp)
166 const char * format;
167 const struct tm * const t;
168 char * pt;
169 const char * const ptlim;
170 int * warnp;
171 {
172 for ( ; *format; ++format) {
173 if (*format == '%') {
174 label:
175 switch (*++format) {
176 case '\0':
177 --format;
178 break;
179 case 'A':
180 pt = _add((t->tm_wday < 0 ||
181 t->tm_wday >= DAYSPERWEEK) ?
182 "?" : Locale->weekday[t->tm_wday],
183 pt, ptlim);
184 continue;
185 case 'a':
186 pt = _add((t->tm_wday < 0 ||
187 t->tm_wday >= DAYSPERWEEK) ?
188 "?" : Locale->wday[t->tm_wday],
189 pt, ptlim);
190 continue;
191 case 'B':
192 pt = _add((t->tm_mon < 0 ||
193 t->tm_mon >= MONSPERYEAR) ?
194 "?" : Locale->month[t->tm_mon],
195 pt, ptlim);
196 continue;
197 case 'b':
198 case 'h':
199 pt = _add((t->tm_mon < 0 ||
200 t->tm_mon >= MONSPERYEAR) ?
201 "?" : Locale->mon[t->tm_mon],
202 pt, ptlim);
203 continue;
204 case 'C':
205 /*
206 ** %C used to do a...
207 ** _fmt("%a %b %e %X %Y", t);
208 ** ...whereas now POSIX 1003.2 calls for
209 ** something completely different.
210 ** (ado, 1993-05-24)
211 */
212 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0,
213 pt, ptlim);
214 continue;
215 case 'c':
216 {
217 int warn2 = IN_SOME;
218
219 pt = _fmt(Locale->c_fmt, t, pt, ptlim, warnp);
220 if (warn2 == IN_ALL)
221 warn2 = IN_THIS;
222 if (warn2 > *warnp)
223 *warnp = warn2;
224 }
225 continue;
226 case 'D':
227 pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
228 continue;
229 case 'd':
230 pt = _conv(t->tm_mday, "%02d", pt, ptlim);
231 continue;
232 case 'E':
233 case 'O':
234 /*
235 ** C99 locale modifiers.
236 ** The sequences
237 ** %Ec %EC %Ex %EX %Ey %EY
238 ** %Od %oe %OH %OI %Om %OM
239 ** %OS %Ou %OU %OV %Ow %OW %Oy
240 ** are supposed to provide alternate
241 ** representations.
242 */
243 goto label;
244 case 'e':
245 pt = _conv(t->tm_mday, "%2d", pt, ptlim);
246 continue;
247 case 'F':
248 pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
249 continue;
250 case 'H':
251 pt = _conv(t->tm_hour, "%02d", pt, ptlim);
252 continue;
253 case 'I':
254 pt = _conv((t->tm_hour % 12) ?
255 (t->tm_hour % 12) : 12,
256 "%02d", pt, ptlim);
257 continue;
258 case 'j':
259 pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
260 continue;
261 case 'k':
262 /*
263 ** This used to be...
264 ** _conv(t->tm_hour % 12 ?
265 ** t->tm_hour % 12 : 12, 2, ' ');
266 ** ...and has been changed to the below to
267 ** match SunOS 4.1.1 and Arnold Robbins'
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, "%2d", pt, ptlim);
273 continue;
274 #ifdef KITCHEN_SINK
275 case 'K':
276 /*
277 ** After all this time, still unclaimed!
278 */
279 pt = _add("kitchen sink", pt, ptlim);
280 continue;
281 #endif /* defined KITCHEN_SINK */
282 case 'l':
283 /*
284 ** This used to be...
285 ** _conv(t->tm_hour, 2, ' ');
286 ** ...and has been changed to the below to
287 ** match SunOS 4.1.1 and Arnold Robbin's
288 ** strftime version 3.0. That is, "%k" and
289 ** "%l" have been swapped.
290 ** (ado, 1993-05-24)
291 */
292 pt = _conv((t->tm_hour % 12) ?
293 (t->tm_hour % 12) : 12,
294 "%2d", pt, ptlim);
295 continue;
296 case 'M':
297 pt = _conv(t->tm_min, "%02d", pt, ptlim);
298 continue;
299 case 'm':
300 pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
301 continue;
302 case 'n':
303 pt = _add("\n", pt, ptlim);
304 continue;
305 case 'p':
306 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
307 Locale->pm :
308 Locale->am,
309 pt, ptlim);
310 continue;
311 case 'R':
312 pt = _fmt("%H:%M", t, pt, ptlim, warnp);
313 continue;
314 case 'r':
315 pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
316 continue;
317 case 'S':
318 pt = _conv(t->tm_sec, "%02d", pt, ptlim);
319 continue;
320 case 's':
321 {
322 struct tm tm;
323 char buf[INT_STRLEN_MAXIMUM(
324 time_t) + 1];
325 time_t mkt;
326
327 tm = *t;
328 mkt = mktime(&tm);
329 if (TYPE_SIGNED(time_t))
330 (void) sprintf(buf, "%ld",
331 (long) mkt);
332 else (void) sprintf(buf, "%lu",
333 (unsigned long) mkt);
334 pt = _add(buf, pt, ptlim);
335 }
336 continue;
337 case 'T':
338 pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
339 continue;
340 case 't':
341 pt = _add("\t", pt, ptlim);
342 continue;
343 case 'U':
344 pt = _conv((t->tm_yday + DAYSPERWEEK -
345 t->tm_wday) / DAYSPERWEEK,
346 "%02d", pt, ptlim);
347 continue;
348 case 'u':
349 /*
350 ** From Arnold Robbins' strftime version 3.0:
351 ** "ISO 8601: Weekday as a decimal number
352 ** [1 (Monday) - 7]"
353 ** (ado, 1993-05-24)
354 */
355 pt = _conv((t->tm_wday == 0) ?
356 DAYSPERWEEK : t->tm_wday,
357 "%d", pt, ptlim);
358 continue;
359 case 'V': /* ISO 8601 week number */
360 case 'G': /* ISO 8601 year (four digits) */
361 case 'g': /* ISO 8601 year (two digits) */
362 /*
363 ** From Arnold Robbins' strftime version 3.0: "the week number of the
364 ** year (the first Monday as the first day of week 1) as a decimal number
365 ** (01-53)."
366 ** (ado, 1993-05-24)
367 **
368 ** From "http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html" by Markus Kuhn:
369 ** "Week 01 of a year is per definition the first week which has the
370 ** Thursday in this year, which is equivalent to the week which contains
371 ** the fourth day of January. In other words, the first week of a new year
372 ** is the week which has the majority of its days in the new year. Week 01
373 ** might also contain days from the previous year and the week before week
374 ** 01 of a year is the last week (52 or 53) of the previous year even if
375 ** it contains days from the new year. A week starts with Monday (day 1)
376 ** and ends with Sunday (day 7). For example, the first week of the year
377 ** 1997 lasts from 1996-12-30 to 1997-01-05..."
378 ** (ado, 1996-01-02)
379 */
380 {
381 int year;
382 int base;
383 int yday;
384 int wday;
385 int w;
386
387 year = t->tm_year;
388 base = TM_YEAR_BASE;
389 yday = t->tm_yday;
390 wday = t->tm_wday;
391 for ( ; ; ) {
392 int len;
393 int bot;
394 int top;
395
396 len = isleap_sum(year, base) ?
397 DAYSPERLYEAR :
398 DAYSPERNYEAR;
399 /*
400 ** What yday (-3 ... 3) does
401 ** the ISO year begin on?
402 */
403 bot = ((yday + 11 - wday) %
404 DAYSPERWEEK) - 3;
405 /*
406 ** What yday does the NEXT
407 ** ISO year begin on?
408 */
409 top = bot -
410 (len % DAYSPERWEEK);
411 if (top < -3)
412 top += DAYSPERWEEK;
413 top += len;
414 if (yday >= top) {
415 ++base;
416 w = 1;
417 break;
418 }
419 if (yday >= bot) {
420 w = 1 + ((yday - bot) /
421 DAYSPERWEEK);
422 break;
423 }
424 --base;
425 yday += isleap_sum(year, base) ?
426 DAYSPERLYEAR :
427 DAYSPERNYEAR;
428 }
429 #ifdef XPG4_1994_04_09
430 if ((w == 52 &&
431 t->tm_mon == TM_JANUARY) ||
432 (w == 1 &&
433 t->tm_mon == TM_DECEMBER))
434 w = 53;
435 #endif /* defined XPG4_1994_04_09 */
436 if (*format == 'V')
437 pt = _conv(w, "%02d",
438 pt, ptlim);
439 else if (*format == 'g') {
440 *warnp = IN_ALL;
441 pt = _yconv(year, base, 0, 1,
442 pt, ptlim);
443 } else pt = _yconv(year, base, 1, 1,
444 pt, ptlim);
445 }
446 continue;
447 case 'v':
448 /*
449 ** From Arnold Robbins' strftime version 3.0:
450 ** "date as dd-bbb-YYYY"
451 ** (ado, 1993-05-24)
452 */
453 pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
454 continue;
455 case 'W':
456 pt = _conv((t->tm_yday + DAYSPERWEEK -
457 (t->tm_wday ?
458 (t->tm_wday - 1) :
459 (DAYSPERWEEK - 1))) / DAYSPERWEEK,
460 "%02d", pt, ptlim);
461 continue;
462 case 'w':
463 pt = _conv(t->tm_wday, "%d", pt, ptlim);
464 continue;
465 case 'X':
466 pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
467 continue;
468 case 'x':
469 {
470 int warn2 = IN_SOME;
471
472 pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
473 if (warn2 == IN_ALL)
474 warn2 = IN_THIS;
475 if (warn2 > *warnp)
476 *warnp = warn2;
477 }
478 continue;
479 case 'y':
480 *warnp = IN_ALL;
481 pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1,
482 pt, ptlim);
483 continue;
484 case 'Y':
485 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1,
486 pt, ptlim);
487 continue;
488 case 'Z':
489 #ifdef TM_ZONE
490 if (t->TM_ZONE != NULL)
491 pt = _add(t->TM_ZONE, pt, ptlim);
492 else
493 #endif /* defined TM_ZONE */
494 if (t->tm_isdst >= 0)
495 pt = _add(tzname[t->tm_isdst != 0],
496 pt, ptlim);
497 /*
498 ** C99 says that %Z must be replaced by the
499 ** empty string if the time zone is not
500 ** determinable.
501 */
502 continue;
503 case 'z':
504 {
505 int diff;
506 char const * sign;
507
508 if (t->tm_isdst < 0)
509 continue;
510 #ifdef TM_GMTOFF
511 diff = t->TM_GMTOFF;
512 #else /* !defined TM_GMTOFF */
513 /*
514 ** C99 says that the UTC offset must
515 ** be computed by looking only at
516 ** tm_isdst. This requirement is
517 ** incorrect, since it means the code
518 ** must rely on magic (in this case
519 ** altzone and timezone), and the
520 ** magic might not have the correct
521 ** offset. Doing things correctly is
522 ** tricky and requires disobeying C99;
523 ** see GNU C strftime for details.
524 ** For now, punt and conform to the
525 ** standard, even though it's incorrect.
526 **
527 ** C99 says that %z must be replaced by the
528 ** empty string if the time zone is not
529 ** determinable, so output nothing if the
530 ** appropriate variables are not available.
531 */
532 if (t->tm_isdst == 0)
533 #ifdef USG_COMPAT
534 diff = -timezone;
535 #else /* !defined USG_COMPAT */
536 continue;
537 #endif /* !defined USG_COMPAT */
538 else
539 #ifdef ALTZONE
540 diff = -altzone;
541 #else /* !defined ALTZONE */
542 continue;
543 #endif /* !defined ALTZONE */
544 #endif /* !defined TM_GMTOFF */
545 if (diff < 0) {
546 sign = "-";
547 diff = -diff;
548 } else sign = "+";
549 pt = _add(sign, pt, ptlim);
550 diff /= SECSPERMIN;
551 diff = (diff / MINSPERHOUR) * 100 +
552 (diff % MINSPERHOUR);
553 pt = _conv(diff, "%04d", pt, ptlim);
554 }
555 continue;
556 case '+':
557 pt = _fmt(Locale->date_fmt, t, pt, ptlim,
558 warnp);
559 continue;
560 case '%':
561 /*
562 ** X311J/88-090 (4.12.3.5): if conversion char is
563 ** undefined, behavior is undefined. Print out the
564 ** character itself as printf(3) also does.
565 */
566 default:
567 break;
568 }
569 }
570 if (pt == ptlim)
571 break;
572 *pt++ = *format;
573 }
574 return pt;
575 }
576
577 static char *
578 _conv(n, format, pt, ptlim)
579 const int n;
580 const char * const format;
581 char * const pt;
582 const char * const ptlim;
583 {
584 char buf[INT_STRLEN_MAXIMUM(int) + 1];
585
586 (void) sprintf(buf, format, n);
587 return _add(buf, pt, ptlim);
588 }
589
590 static char *
591 _add(str, pt, ptlim)
592 const char * str;
593 char * pt;
594 const char * const ptlim;
595 {
596 while (pt < ptlim && (*pt = *str++) != '\0')
597 ++pt;
598 return pt;
599 }
600
601 /*
602 ** POSIX and the C Standard are unclear or inconsistent about
603 ** what %C and %y do if the year is negative or exceeds 9999.
604 ** Use the convention that %C concatenated with %y yields the
605 ** same output as %Y, and that %Y contains at least 4 bytes,
606 ** with more only if necessary.
607 */
608
609 static char *
610 _yconv(a, b, convert_top, convert_yy, pt, ptlim)
611 const int a;
612 const int b;
613 const int convert_top;
614 const int convert_yy;
615 char * pt;
616 const char * const ptlim;
617 {
618 register int lead;
619 register int trail;
620
621 #define DIVISOR 100
622 trail = a % DIVISOR + b % DIVISOR;
623 lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR;
624 trail %= DIVISOR;
625 if (trail < 0 && lead > 0) {
626 trail += DIVISOR;
627 --lead;
628 } else if (lead < 0 && trail > 0) {
629 trail -= DIVISOR;
630 ++lead;
631 }
632 if (convert_top) {
633 if (lead == 0 && trail < 0)
634 pt = _add("-0", pt, ptlim);
635 else pt = _conv(lead, "%02d", pt, ptlim);
636 }
637 if (convert_yy)
638 pt = _conv(((trail < 0) ? -trail : trail), "%02d", pt, ptlim);
639 return pt;
640 }
641
642 #ifdef LOCALE_HOME
643 static struct lc_time_T *
644 _loc P((void))
645 {
646 static const char locale_home[] = LOCALE_HOME;
647 static const char lc_time[] = "LC_TIME";
648 static char * locale_buf;
649
650 int fd;
651 int oldsun; /* "...ain't got nothin' to do..." */
652 char * lbuf;
653 char * name;
654 char * p;
655 const char ** ap;
656 const char * plim;
657 char filename[FILENAME_MAX];
658 struct stat st;
659 size_t namesize;
660 size_t bufsize;
661
662 /*
663 ** Use localebuf.mon[0] to signal whether locale is already set up.
664 */
665 if (localebuf.mon[0])
666 return &localebuf;
667 name = setlocale(LC_TIME, (char *) NULL);
668 if (name == NULL || *name == '\0')
669 goto no_locale;
670 /*
671 ** If the locale name is the same as our cache, use the cache.
672 */
673 lbuf = locale_buf;
674 if (lbuf != NULL && strcmp(name, lbuf) == 0) {
675 p = lbuf;
676 for (ap = (const char **) &localebuf;
677 ap < (const char **) (&localebuf + 1);
678 ++ap)
679 *ap = p += strlen(p) + 1;
680 return &localebuf;
681 }
682 /*
683 ** Slurp the locale file into the cache.
684 */
685 namesize = strlen(name) + 1;
686 if (sizeof filename <
687 ((sizeof locale_home) + namesize + (sizeof lc_time)))
688 goto no_locale;
689 oldsun = 0;
690 (void) sprintf(filename, "%s/%s/%s", locale_home, name, lc_time);
691 fd = open(filename, O_RDONLY);
692 if (fd < 0) {
693 /*
694 ** Old Sun systems have a different naming and data convention.
695 */
696 oldsun = 1;
697 (void) sprintf(filename, "%s/%s/%s", locale_home,
698 lc_time, name);
699 fd = open(filename, O_RDONLY);
700 if (fd < 0)
701 goto no_locale;
702 }
703 if (fstat(fd, &st) != 0)
704 goto bad_locale;
705 if (st.st_size <= 0)
706 goto bad_locale;
707 bufsize = namesize + st.st_size;
708 locale_buf = NULL;
709 lbuf = (lbuf == NULL) ? malloc(bufsize) : realloc(lbuf, bufsize);
710 if (lbuf == NULL)
711 goto bad_locale;
712 (void) strcpy(lbuf, name);
713 p = lbuf + namesize;
714 plim = p + st.st_size;
715 if (read(fd, p, (size_t) st.st_size) != st.st_size)
716 goto bad_lbuf;
717 if (close(fd) != 0)
718 goto bad_lbuf;
719 /*
720 ** Parse the locale file into localebuf.
721 */
722 if (plim[-1] != '\n')
723 goto bad_lbuf;
724 for (ap = (const char **) &localebuf;
725 ap < (const char **) (&localebuf + 1);
726 ++ap) {
727 if (p == plim)
728 goto bad_lbuf;
729 *ap = p;
730 while (*p != '\n')
731 ++p;
732 *p++ = '\0';
733 }
734 if (oldsun) {
735 /*
736 ** SunOS 4 used an obsolescent format; see localdtconv(3).
737 ** c_fmt had the ``short format for dates and times together''
738 ** (SunOS 4 date, "%a %b %e %T %Z %Y" in the C locale);
739 ** date_fmt had the ``long format for dates''
740 ** (SunOS 4 strftime %C, "%A, %B %e, %Y" in the C locale).
741 ** Discard the latter in favor of the former.
742 */
743 localebuf.date_fmt = localebuf.c_fmt;
744 }
745 /*
746 ** Record the successful parse in the cache.
747 */
748 locale_buf = lbuf;
749
750 return &localebuf;
751
752 bad_lbuf:
753 free(lbuf);
754 bad_locale:
755 (void) close(fd);
756 no_locale:
757 localebuf = C_time_locale;
758 locale_buf = NULL;
759 return &localebuf;
760 }
761 #endif /* defined LOCALE_HOME */
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