time.c 63 KB

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  1. /* Copyright (C) 2002-2004 Manuel Novoa III <mjn3@codepoet.org>
  2. *
  3. * GNU Library General Public License (LGPL) version 2 or later.
  4. *
  5. * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
  6. */
  7. /* June 15, 2002 Initial Notes:
  8. *
  9. * Note: It is assumed throught that time_t is either long or unsigned long.
  10. * Similarly, clock_t is assumed to be long int.
  11. *
  12. * Warning: Assumptions are made about the layout of struct tm! It is
  13. * assumed that the initial fields of struct tm are (in order):
  14. * tm_sec, tm_min, tm_hour, tm_mday, tm_mon, tm_year, tm_wday, tm_yday
  15. *
  16. * Reached the inital goal of supporting the ANSI/ISO C99 time functions
  17. * as well as SUSv3's strptime. All timezone info is obtained from the
  18. * TZ env variable.
  19. *
  20. * Differences from glibc worth noting:
  21. *
  22. * Leap seconds are not considered here.
  23. *
  24. * glibc stores additional timezone info the struct tm, whereas we don't.
  25. *
  26. * Alternate digits and era handling are not currently implemented.
  27. * The modifiers are accepted, and tested for validity with the following
  28. * specifier, but are ignored otherwise.
  29. *
  30. * strftime does not implement glibc extension modifiers or widths for
  31. * conversion specifiers. However it does implement the glibc
  32. * extension specifiers %l, %k, and %s. It also recognizes %P, but
  33. * treats it as a synonym for %p; i.e. doesn't convert to lower case.
  34. *
  35. * strptime implements the glibc extension specifiers. However, it follows
  36. * SUSv3 in requiring at least one non-alphanumeric char between
  37. * conversion specifiers. Also, strptime only sets struct tm fields
  38. * for which format specifiers appear and does not try to infer other
  39. * fields (such as wday) as glibc's version does.
  40. *
  41. * TODO - Since glibc's %l and %k can space-pad their output in strftime,
  42. * it might be reasonable to eat whitespace first for those specifiers.
  43. * This could be done by pushing " %I" and " %H" respectively so that
  44. * leading whitespace is consumed. This is really only an issue if %l
  45. * or %k occurs at the start of the format string.
  46. *
  47. * TODO - Implement getdate? tzfile? struct tm extensions?
  48. *
  49. * TODO - Rework _time_mktime to remove the dependency on long long.
  50. */
  51. /* Oct 28, 2002
  52. *
  53. * Fixed allowed char check for std and dst TZ fields.
  54. *
  55. * Added several options concerned with timezone support. The names will
  56. * probably change once Erik gets the new config system in place.
  57. *
  58. * Defining __TIME_TZ_FILE causes tzset() to attempt to read the TZ value
  59. * from the file /etc/TZ if the TZ env variable isn't set. The file contents
  60. * must be the intended value of TZ, followed by a newline. No other chars,
  61. * spacing, etc is allowed. As an example, an easy way for me to init
  62. * /etc/TZ appropriately would be: echo CST6CDT > /etc/TZ
  63. *
  64. * Defining __TIME_TZ_FILE_ONCE will cause all further accesses of /etc/TZ
  65. * to be skipped once a legal value has been read.
  66. *
  67. * Defining __TIME_TZ_OPT_SPEED will cause a tzset() to keep a copy of the
  68. * last TZ setting string and do a "fast out" if the current string is the
  69. * same.
  70. *
  71. * Nov 21, 2002 Fix an error return case in _time_mktime.
  72. *
  73. * Nov 26, 2002 Fix bug in setting daylight and timezone when no (valid) TZ.
  74. * Bug reported by Arne Bernin <arne@alamut.de> in regards to freeswan.
  75. *
  76. * July 27, 2003 Adjust the struct tm extension field support.
  77. * Change __tm_zone back to a ptr and add the __tm_tzname[] buffer for
  78. * __tm_zone to point to. This gets around complaints from g++.
  79. * Who knows... it might even fix the PPC timezone init problem.
  80. *
  81. * July 29, 2003 Fix a bug in mktime behavior when tm_isdst was -1.
  82. * Bug reported by "Sid Wade" <sid@vivato.net> in regards to busybox.
  83. *
  84. * NOTE: uClibc mktime behavior is different than glibc's when
  85. * the struct tm has tm_isdst == -1 and also had fields outside of
  86. * the normal ranges.
  87. *
  88. * Apparently, glibc examines (at least) tm_sec and guesses the app's
  89. * intention of assuming increasing or decreasing time when entering an
  90. * ambiguous time period at the dst<->st boundaries.
  91. *
  92. * The uClibc behavior is to always normalize the struct tm and then
  93. * try to determing the dst setting.
  94. *
  95. * As long as tm_isdst != -1 or the time specifiec by struct tm is
  96. * unambiguous (not falling in the dst<->st transition region) both
  97. * uClibc and glibc should produce the same result for mktime.
  98. *
  99. * Oct 31, 2003 Kill the seperate __tm_zone and __tm_tzname[] and which
  100. * doesn't work if you want the memcpy the struct. Sigh... I didn't
  101. * think about that. So now, when the extensions are enabled, we
  102. * malloc space when necessary and keep the timezone names in a linked
  103. * list.
  104. *
  105. * Fix a dst-related bug which resulted in use of uninitialized data.
  106. *
  107. * Nov 15, 2003 I forgot to update the thread locking in the last dst fix.
  108. *
  109. * Dec 14, 2003 Fix some dst issues in _time_mktime().
  110. * Normalize the tm_isdst value to -1, 0, or 1.
  111. * If no dst for this timezone, then reset tm_isdst to 0.
  112. *
  113. * May 7, 2004
  114. * Change clock() to allow wrapping.
  115. * Add timegm() function.
  116. * Make lookup_tzname() static (as it should have been).
  117. * Have strftime() get timezone information from the passed struct
  118. * for the %z and %Z conversions when using struct tm extensions.
  119. *
  120. * Jul 24, 2004
  121. * Fix 2 bugs in strftime related to glibc struct tm extensions.
  122. * 1) Need to negate tm_gmtoff field value when used. (bug 336).
  123. * 2) Deal with NULL ptr case for tm_zone field, which was causing
  124. * segfaults in both the NIST/PCTS tests and the Python 2.4.1
  125. * self-test suite.
  126. * NOTE: We set uninitialized timezone names to "???", and this
  127. * differs (intentionally) from glibc's behavior.
  128. */
  129. #define strnlen __strnlen
  130. #define gettimeofday __gettimeofday
  131. #define _GNU_SOURCE
  132. #include <stdio.h>
  133. #include <stdlib.h>
  134. #include <stddef.h>
  135. #include <string.h>
  136. #include <time.h>
  137. #include <limits.h>
  138. #include <assert.h>
  139. #include <errno.h>
  140. #include <ctype.h>
  141. #include <langinfo.h>
  142. #include <locale.h>
  143. #include <bits/uClibc_uintmaxtostr.h>
  144. extern void __tzset (void) __THROW attribute_hidden;
  145. extern long int __strtol (__const char *__restrict __nptr,
  146. char **__restrict __endptr, int __base)
  147. __THROW __nonnull ((1)) __wur attribute_hidden;
  148. extern char *__nl_langinfo (nl_item __item) __THROW attribute_hidden;
  149. #ifdef __UCLIBC_HAS_XLOCALE__
  150. #include <xlocale.h>
  151. extern long int __strtol_l (__const char *__restrict __nptr,
  152. char **__restrict __endptr, int __base,
  153. __locale_t __loc) __THROW __nonnull ((1, 4)) __wur attribute_hidden;
  154. extern int __strncasecmp_l (__const char *__s1, __const char *__s2,
  155. size_t __n, __locale_t __loc)
  156. __THROW __attribute_pure__ __nonnull ((1, 2, 4)) attribute_hidden;
  157. extern size_t __strftime_l (char *__restrict __s, size_t __maxsize,
  158. __const char *__restrict __format,
  159. __const struct tm *__restrict __tp,
  160. __locale_t __loc) __THROW attribute_hidden;
  161. extern char *__strptime_l (__const char *__restrict __s,
  162. __const char *__restrict __fmt, struct tm *__tp,
  163. __locale_t __loc) __THROW attribute_hidden;
  164. extern char *__nl_langinfo_l (nl_item __item, __locale_t l) attribute_hidden;
  165. #endif
  166. #ifndef __isleap
  167. #define __isleap(y) ( !((y) % 4) && ( ((y) % 100) || !((y) % 400) ) )
  168. #endif
  169. #ifndef TZNAME_MAX
  170. #define TZNAME_MAX _POSIX_TZNAME_MAX
  171. #endif
  172. /**********************************************************************/
  173. /* The era code is currently unfinished. */
  174. /* #define ENABLE_ERA_CODE */
  175. #define TZ_BUFLEN (2*TZNAME_MAX + 56)
  176. #ifdef __UCLIBC_HAS_TZ_FILE__
  177. #include <sys/stat.h>
  178. #include <fcntl.h>
  179. #include <unistd.h>
  180. #include "paths.h"
  181. /* ":<tzname>+hh:mm:ss<tzname>+hh:mm:ss,Mmm.w.d/hh:mm:ss,Mmm.w.d/hh:mm:ss" + nul */
  182. /* 1 + 2*(1+TZNAME_MAX+1 + 9 + 7 + 9) + 1 = 2*TZNAME_MAX + 56 */
  183. #else /* __UCLIBC_HAS_TZ_FILE__ */
  184. /* Probably no longer needed. */
  185. #undef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  186. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  187. /**********************************************************************/
  188. extern struct tm __time_tm;
  189. extern struct tm *__localtime_r (__const time_t *__restrict __timer,
  190. struct tm *__restrict __tp) attribute_hidden;
  191. extern struct tm *__localtime (__const time_t *__timer) attribute_hidden;
  192. typedef struct {
  193. long gmt_offset;
  194. long dst_offset;
  195. short day; /* for J or normal */
  196. short week;
  197. short month;
  198. short rule_type; /* J, M, \0 */
  199. char tzname[TZNAME_MAX+1];
  200. } rule_struct;
  201. #ifdef __UCLIBC_HAS_THREADS__
  202. # include <pthread.h>
  203. extern pthread_mutex_t _time_tzlock;
  204. #endif
  205. #define TZLOCK __pthread_mutex_lock(&_time_tzlock)
  206. #define TZUNLOCK __pthread_mutex_unlock(&_time_tzlock)
  207. extern rule_struct _time_tzinfo[2];
  208. extern struct tm *_time_t2tm(const time_t *__restrict timer,
  209. int offset, struct tm *__restrict result) attribute_hidden;
  210. extern time_t _time_mktime(struct tm *timeptr, int store_on_success) attribute_hidden;
  211. extern struct tm *__time_localtime_tzi(const time_t *__restrict timer,
  212. struct tm *__restrict result,
  213. rule_struct *tzi) attribute_hidden;
  214. extern time_t _time_mktime_tzi(struct tm *timeptr, int store_on_success,
  215. rule_struct *tzi) attribute_hidden;
  216. extern char *__asctime (__const struct tm *__tp) attribute_hidden;
  217. extern char *__asctime_r (__const struct tm *__restrict __tp,
  218. char *__restrict __buf) attribute_hidden;
  219. /**********************************************************************/
  220. #ifdef L_asctime
  221. static char __time_str[26];
  222. char attribute_hidden *__asctime(const struct tm *ptm)
  223. {
  224. return __asctime_r(ptm, __time_str);
  225. }
  226. strong_alias(__asctime,asctime)
  227. #endif
  228. /**********************************************************************/
  229. #ifdef L_asctime_r
  230. /* Strictly speaking, this implementation isn't correct. ANSI/ISO specifies
  231. * that the implementation of asctime() be equivalent to
  232. *
  233. * char *asctime(const struct tm *timeptr)
  234. * {
  235. * static char wday_name[7][3] = {
  236. * "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
  237. * };
  238. * static char mon_name[12][3] = {
  239. * "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  240. * "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  241. * };
  242. * static char result[26];
  243. *
  244. * __sprintf(result, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
  245. * wday_name[timeptr->tm_wday],
  246. * mon_name[timeptr->tm_mon],
  247. * timeptr->tm_mday, timeptr->tm_hour,
  248. * timeptr->tm_min, timeptr->tm_sec,
  249. * 1900 + timeptr->tm_year);
  250. * return result;
  251. * }
  252. *
  253. * but the above is either inherently unsafe, or carries with it the implicit
  254. * assumption that all fields of timeptr fall within their usual ranges, and
  255. * that the tm_year value falls in the range [-2899,8099] to avoid overflowing
  256. * the static buffer.
  257. *
  258. * If we take the implicit assumption as given, then the implementation below
  259. * is still incorrect for tm_year values < -900, as there will be either
  260. * 0-padding and/or a missing negative sign for the year conversion . But given
  261. * the ususal use of asctime(), I think it isn't unreasonable to restrict correct
  262. * operation to the domain of years between 1000 and 9999.
  263. */
  264. /* This is generally a good thing, but if you're _sure_ any data passed will be
  265. * in range, you can #undef this. */
  266. #define SAFE_ASCTIME_R 1
  267. static const unsigned char at_data[] = {
  268. 'S', 'u', 'n', 'M', 'o', 'n', 'T', 'u', 'e', 'W', 'e', 'd',
  269. 'T', 'h', 'u', 'F', 'r', 'i', 'S', 'a', 't',
  270. 'J', 'a', 'n', 'F', 'e', 'b', 'M', 'a', 'r', 'A', 'p', 'r',
  271. 'M', 'a', 'y', 'J', 'u', 'n', 'J', 'u', 'l', 'A', 'u', 'g',
  272. 'S', 'e', 'p', 'O', 'c', 't', 'N', 'o', 'v', 'D', 'e', 'c',
  273. #ifdef SAFE_ASCTIME_R
  274. '?', '?', '?',
  275. #endif
  276. ' ', '?', '?', '?',
  277. ' ', '0',
  278. offsetof(struct tm, tm_mday),
  279. ' ', '0',
  280. offsetof(struct tm, tm_hour),
  281. ':', '0',
  282. offsetof(struct tm, tm_min),
  283. ':', '0',
  284. offsetof(struct tm, tm_sec),
  285. ' ', '?', '?', '?', '?', '\n', 0
  286. };
  287. char attribute_hidden *__asctime_r(register const struct tm *__restrict ptm,
  288. register char *__restrict buffer)
  289. {
  290. int tmp;
  291. assert(ptm);
  292. assert(buffer);
  293. #ifdef SAFE_ASCTIME_R
  294. __memcpy(buffer, at_data + 3*(7 + 12), sizeof(at_data) - 3*(7 + 12));
  295. if (((unsigned int)(ptm->tm_wday)) <= 6) {
  296. __memcpy(buffer, at_data + 3 * ptm->tm_wday, 3);
  297. }
  298. if (((unsigned int)(ptm->tm_mon)) <= 11) {
  299. __memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3);
  300. }
  301. #else
  302. assert(((unsigned int)(ptm->tm_wday)) <= 6);
  303. assert(((unsigned int)(ptm->tm_mon)) <= 11);
  304. __memcpy(buffer, at_data + 3*(7 + 12) - 3, sizeof(at_data) + 3 - 3*(7 + 12));
  305. __memcpy(buffer, at_data + 3 * ptm->tm_wday, 3);
  306. __memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3);
  307. #endif
  308. #ifdef SAFE_ASCTIME_R
  309. buffer += 19;
  310. tmp = ptm->tm_year + 1900;
  311. if (((unsigned int) tmp) < 10000) {
  312. buffer += 4;
  313. do {
  314. *buffer = '0' + (tmp % 10);
  315. tmp /= 10;
  316. } while (*--buffer == '?');
  317. }
  318. #else /* SAFE_ASCTIME_R */
  319. buffer += 23;
  320. tmp = ptm->tm_year + 1900;
  321. assert( ((unsigned int) tmp) < 10000 );
  322. do {
  323. *buffer = '0' + (tmp % 10);
  324. tmp /= 10;
  325. } while (*--buffer == '?');
  326. #endif /* SAFE_ASCTIME_R */
  327. do {
  328. --buffer;
  329. tmp = *((int *)(((const char *) ptm) + (int) *buffer));
  330. #ifdef SAFE_ASCTIME_R
  331. if (((unsigned int) tmp) >= 100) { /* Just check 2 digit non-neg. */
  332. buffer[-1] = *buffer = '?';
  333. } else
  334. #else /* SAFE_ASCTIME_R */
  335. assert(((unsigned int) tmp) < 100); /* Just check 2 digit non-neg. */
  336. #endif /* SAFE_ASCTIME_R */
  337. {
  338. *buffer = '0' + (tmp % 10);
  339. #ifdef __BCC__
  340. buffer[-1] = '0' + (tmp/10);
  341. #else /* __BCC__ */
  342. buffer[-1] += (tmp/10);
  343. #endif /* __BCC__ */
  344. }
  345. } while ((buffer -= 2)[-2] == '0');
  346. if (*++buffer == '0') { /* Space-pad day of month. */
  347. *buffer = ' ';
  348. }
  349. return buffer - 8;
  350. }
  351. strong_alias(__asctime_r,asctime_r)
  352. #endif
  353. /**********************************************************************/
  354. #ifdef L_clock
  355. #define times __times
  356. #include <sys/times.h>
  357. #ifndef __BCC__
  358. #if CLOCKS_PER_SEC != 1000000L
  359. #error unexpected value for CLOCKS_PER_SEC!
  360. #endif
  361. #endif
  362. #ifdef __UCLIBC_CLK_TCK_CONST
  363. # if __UCLIBC_CLK_TCK_CONST > CLOCKS_PER_SEC
  364. # error __UCLIBC_CLK_TCK_CONST > CLOCKS_PER_SEC!
  365. # elif __UCLIBC_CLK_TCK_CONST < 1
  366. # error __UCLIBC_CLK_TCK_CONST < 1!
  367. # endif
  368. #endif
  369. /* Note: SUSv3 notes
  370. *
  371. * On XSI-conformant systems, CLOCKS_PER_SEC is defined to be one million.
  372. *
  373. * The value returned by clock() may wrap around on some implementations.
  374. * For example, on a machine with 32-bit values for clock_t, it wraps
  375. * after 2147 seconds.
  376. *
  377. * This implies that we should bitwise and with LONG_MAX.
  378. */
  379. clock_t clock(void)
  380. {
  381. struct tms xtms;
  382. unsigned long t;
  383. times(&xtms);
  384. t = ((unsigned long) xtms.tms_utime) + xtms.tms_stime;
  385. #ifndef __UCLIBC_CLK_TCK_CONST
  386. # error __UCLIBC_CLK_TCK_CONST not defined!
  387. #elif ((CLOCKS_PER_SEC % __UCLIBC_CLK_TCK_CONST) == 0)
  388. /* CLOCKS_PER_SEC == k * __UCLIBC_CLK_TCK_CONST for some integer k >= 1. */
  389. return ((t * (CLOCKS_PER_SEC/__UCLIBC_CLK_TCK_CONST)) & LONG_MAX);
  390. #else
  391. /* Unlike the previous case, the scaling factor is not an integer.
  392. * So when tms_utime, tms_stime, or their sum wraps, some of the
  393. * "visible" bits in the return value are affected. Nothing we
  394. * can really do about this though other than handle tms_utime and
  395. * tms_stime seperately and then sum. But since that doesn't really
  396. * buy us much, we don't bother. */
  397. return ((((t / __UCLIBC_CLK_TCK_CONST) * CLOCKS_PER_SEC)
  398. + ((((t % __UCLIBC_CLK_TCK_CONST) * CLOCKS_PER_SEC)
  399. / __UCLIBC_CLK_TCK_CONST))
  400. ) & LONG_MAX);
  401. #endif
  402. }
  403. #endif
  404. /**********************************************************************/
  405. #ifdef L_ctime
  406. char attribute_hidden *__ctime(const time_t *clock)
  407. {
  408. /* ANSI/ISO/SUSv3 say that ctime is equivalent to the following. */
  409. return __asctime(__localtime(clock));
  410. }
  411. strong_alias(__ctime,ctime)
  412. #endif
  413. /**********************************************************************/
  414. #ifdef L_ctime_r
  415. char *ctime_r(const time_t *clock, char *buf)
  416. {
  417. struct tm xtm;
  418. return __asctime_r(__localtime_r(clock, &xtm), buf);
  419. }
  420. #endif
  421. /**********************************************************************/
  422. #ifdef L_difftime
  423. #include <float.h>
  424. #if FLT_RADIX != 2
  425. #error difftime implementation assumptions violated for you arch!
  426. #endif
  427. double difftime(time_t time1, time_t time0)
  428. {
  429. #if (LONG_MAX >> DBL_MANT_DIG) == 0
  430. /* time_t fits in the mantissa of a double. */
  431. return ((double) time1) - time0;
  432. #elif ((LONG_MAX >> DBL_MANT_DIG) >> DBL_MANT_DIG) == 0
  433. /* time_t can overflow the mantissa of a double. */
  434. time_t t1, t0, d;
  435. d = ((time_t) 1) << DBL_MANT_DIG;
  436. t1 = time1 / d;
  437. time1 -= (t1 * d);
  438. t0 = time0 / d;
  439. time0 -= (t0*d);
  440. /* Since FLT_RADIX==2 and d is a power of 2, the only possible
  441. * rounding error in the expression below would occur from the
  442. * addition. */
  443. return (((double) t1) - t0) * d + (((double) time1) - time0);
  444. #else
  445. #error difftime needs special implementation on your arch.
  446. #endif
  447. }
  448. #endif
  449. /**********************************************************************/
  450. #ifdef L_gmtime
  451. struct tm *gmtime(const time_t *timer)
  452. {
  453. register struct tm *ptm = &__time_tm;
  454. _time_t2tm(timer, 0, ptm); /* Can return NULL... */
  455. return ptm;
  456. }
  457. #endif
  458. /**********************************************************************/
  459. #ifdef L_gmtime_r
  460. struct tm *gmtime_r(const time_t *__restrict timer,
  461. struct tm *__restrict result)
  462. {
  463. return _time_t2tm(timer, 0, result);
  464. }
  465. #endif
  466. /**********************************************************************/
  467. #ifdef L_localtime
  468. struct tm attribute_hidden *__localtime(const time_t *timer)
  469. {
  470. register struct tm *ptm = &__time_tm;
  471. /* In this implementation, tzset() is called by localtime_r(). */
  472. __localtime_r(timer, ptm); /* Can return NULL... */
  473. return ptm;
  474. }
  475. strong_alias(__localtime,localtime)
  476. #endif
  477. /**********************************************************************/
  478. #ifdef L_localtime_r
  479. struct tm attribute_hidden *__localtime_r(register const time_t *__restrict timer,
  480. register struct tm *__restrict result)
  481. {
  482. TZLOCK;
  483. __tzset();
  484. __time_localtime_tzi(timer, result, _time_tzinfo);
  485. TZUNLOCK;
  486. return result;
  487. }
  488. strong_alias(__localtime_r,localtime_r)
  489. #endif
  490. /**********************************************************************/
  491. #ifdef L__time_localtime_tzi
  492. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  493. struct ll_tzname_item;
  494. typedef struct ll_tzname_item {
  495. struct ll_tzname_item *next;
  496. char tzname[TZNAME_MAX+1];
  497. } ll_tzname_item_t;
  498. static ll_tzname_item_t ll_tzname[] = {
  499. { ll_tzname + 1, "UTC" }, /* Always 1st. */
  500. { NULL, "???" } /* Always 2nd. (invalid or out-of-memory) */
  501. };
  502. static const char *lookup_tzname(const char *key)
  503. {
  504. ll_tzname_item_t *p;
  505. for (p=ll_tzname ; p ; p=p->next) {
  506. if (!__strcmp(p->tzname, key)) {
  507. return p->tzname;
  508. }
  509. }
  510. /* Hmm... a new name. */
  511. if (strnlen(key, TZNAME_MAX+1) < TZNAME_MAX+1) { /* Verify legal length */
  512. if ((p = malloc(sizeof(ll_tzname_item_t))) != NULL) {
  513. /* Insert as 3rd item in the list. */
  514. p->next = ll_tzname[1].next;
  515. ll_tzname[1].next = p;
  516. __strcpy(p->tzname, key);
  517. return p->tzname;
  518. }
  519. }
  520. /* Either invalid or couldn't alloc. */
  521. return ll_tzname[1].tzname;
  522. }
  523. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  524. static const unsigned char day_cor[] = { /* non-leap */
  525. 31, 31, 34, 34, 35, 35, 36, 36, 36, 37, 37, 38, 38
  526. /* 0, 0, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7 */
  527. /* 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 */
  528. };
  529. /* Note: timezone locking is done by localtime_r. */
  530. static int tm_isdst(register const struct tm *__restrict ptm,
  531. register rule_struct *r)
  532. {
  533. long sec;
  534. int i, isdst, isleap, day, day0, monlen, mday;
  535. int oday; /* Note: oday can be uninitialized. */
  536. isdst = 0;
  537. if (r[1].tzname[0] != 0) {
  538. /* First, get the current seconds offset from the start of the year.
  539. * Fields of ptm are assumed to be in their normal ranges. */
  540. sec = ptm->tm_sec
  541. + 60 * (ptm->tm_min
  542. + 60 * (long)(ptm->tm_hour
  543. + 24 * ptm->tm_yday));
  544. /* Do some prep work. */
  545. i = (ptm->tm_year % 400) + 1900; /* Make sure we don't overflow. */
  546. isleap = __isleap(i);
  547. --i;
  548. day0 = (1
  549. + i /* Normal years increment 1 wday. */
  550. + (i/4)
  551. - (i/100)
  552. + (i/400) ) % 7;
  553. i = 0;
  554. do {
  555. day = r->day; /* Common for 'J' and # case. */
  556. if (r->rule_type == 'J') {
  557. if (!isleap || (day < (31+29))) {
  558. --day;
  559. }
  560. } else if (r->rule_type == 'M') {
  561. /* Find 0-based day number for 1st of the month. */
  562. day = 31*r->month - day_cor[r->month -1];
  563. if (isleap && (day >= 59)) {
  564. ++day;
  565. }
  566. monlen = 31 + day_cor[r->month -1] - day_cor[r->month];
  567. if (isleap && (r->month > 1)) {
  568. ++monlen;
  569. }
  570. /* Wweekday (0 is Sunday) of 1st of the month
  571. * is (day0 + day) % 7. */
  572. if ((mday = r->day - ((day0 + day) % 7)) >= 0) {
  573. mday -= 7; /* Back up into prev month since r->week>0. */
  574. }
  575. if ((mday += 7 * r->week) >= monlen) {
  576. mday -= 7;
  577. }
  578. /* So, 0-based day number is... */
  579. day += mday;
  580. }
  581. if (i != 0) {
  582. /* Adjust sec since dst->std change time is in dst. */
  583. sec += (r[-1].gmt_offset - r->gmt_offset);
  584. if (oday > day) {
  585. ++isdst; /* Year starts in dst. */
  586. }
  587. }
  588. oday = day;
  589. /* Now convert day to seconds and add offset and compare. */
  590. if (sec >= (day * 86400L) + r->dst_offset) {
  591. ++isdst;
  592. }
  593. ++r;
  594. } while (++i < 2);
  595. }
  596. return (isdst & 1);
  597. }
  598. struct tm attribute_hidden *__time_localtime_tzi(register const time_t *__restrict timer,
  599. register struct tm *__restrict result,
  600. rule_struct *tzi)
  601. {
  602. time_t x[1];
  603. long offset;
  604. int days, dst;
  605. dst = 0;
  606. do {
  607. days = -7;
  608. offset = 604800L - tzi[dst].gmt_offset;
  609. if (*timer > (LONG_MAX - 604800L)) {
  610. days = -days;
  611. offset = -offset;
  612. }
  613. *x = *timer + offset;
  614. _time_t2tm(x, days, result);
  615. result->tm_isdst = dst;
  616. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  617. result->tm_gmtoff = - tzi[dst].gmt_offset;
  618. result->tm_zone = lookup_tzname(tzi[dst].tzname);
  619. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  620. } while ((++dst < 2)
  621. && ((result->tm_isdst = tm_isdst(result, tzi)) != 0));
  622. return result;
  623. }
  624. #endif
  625. /**********************************************************************/
  626. #ifdef L_mktime
  627. time_t mktime(struct tm *timeptr)
  628. {
  629. return _time_mktime(timeptr, 1);
  630. }
  631. /* Another name for `mktime'. */
  632. /* time_t timelocal(struct tm *tp) */
  633. weak_alias(mktime,timelocal);
  634. #endif
  635. /**********************************************************************/
  636. #ifdef L_timegm
  637. /* Like `mktime' but timeptr represents Universal Time, not local time. */
  638. time_t timegm(struct tm *timeptr)
  639. {
  640. rule_struct gmt_tzinfo[2];
  641. __memset(gmt_tzinfo, 0, sizeof(gmt_tzinfo));
  642. __strcpy(gmt_tzinfo[0].tzname, "GMT"); /* Match glibc behavior here. */
  643. return _time_mktime_tzi(timeptr, 1, gmt_tzinfo);
  644. }
  645. #endif
  646. /**********************************************************************/
  647. #if defined(L_strftime) || defined(L_strftime_l)
  648. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  649. size_t attribute_hidden __strftime(char *__restrict s, size_t maxsize,
  650. const char *__restrict format,
  651. const struct tm *__restrict timeptr)
  652. {
  653. return __strftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE);
  654. }
  655. strong_alias(__strftime,strftime)
  656. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  657. #define NO_E_MOD 0x80
  658. #define NO_O_MOD 0x40
  659. #define ILLEGAL_SPEC 0x3f
  660. #define INT_SPEC 0x00 /* must be 0x00!! */
  661. #define STRING_SPEC 0x10 /* must be 0x10!! */
  662. #define CALC_SPEC 0x20
  663. #define STACKED_SPEC 0x30
  664. #define MASK_SPEC 0x30
  665. /* Compatibility:
  666. *
  667. * No alternate digit (%O?) handling. Always uses 0-9.
  668. * Alternate locale format (%E?) handling is broken for nontrivial ERAs.
  669. * glibc's %P is currently faked by %p. This means it doesn't do lower case.
  670. * glibc's %k, %l, and %s are handled.
  671. * glibc apparently allows (and ignores) extraneous 'E' and 'O' modifiers,
  672. * while they are flagged as illegal conversions here.
  673. */
  674. /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */
  675. static const unsigned char spec[] = {
  676. /* A */ 0x03 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  677. /* B */ 0x04 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  678. /* C */ 0x0a | INT_SPEC | NO_O_MOD,
  679. /* D */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  680. /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  681. /* F */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  682. /* G */ 0x03 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  683. /* H */ 0x0b | INT_SPEC | NO_E_MOD,
  684. /* I */ 0x0c | INT_SPEC | NO_E_MOD,
  685. /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  686. /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  687. /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  688. /* M */ 0x0d | INT_SPEC | NO_E_MOD,
  689. /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  690. /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  691. /* P */ 0x05 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc ; use %p */
  692. /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  693. /* R */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  694. /* S */ 0x0e | INT_SPEC | NO_E_MOD,
  695. /* T */ 0x05 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  696. /* U */ 0x04 | CALC_SPEC | NO_E_MOD,
  697. /* V */ 0x05 | CALC_SPEC | NO_E_MOD,
  698. /* W */ 0x06 | CALC_SPEC | NO_E_MOD,
  699. /* X */ 0x0a | STACKED_SPEC | NO_O_MOD,
  700. /* Y */ 0x0f | INT_SPEC | NO_O_MOD,
  701. /* Z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  702. '?', /* 26 */
  703. '?', /* 27 */
  704. '?', /* 28 */
  705. '?', /* 29 */
  706. 0, /* 30 */
  707. 0, /* 31 */
  708. /* a */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  709. /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  710. /* c */ 0x08 | STACKED_SPEC | NO_O_MOD,
  711. /* d */ 0x00 | INT_SPEC | NO_E_MOD,
  712. /* e */ 0x01 | INT_SPEC | NO_E_MOD,
  713. /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  714. /* g */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  715. /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* same as b */
  716. /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  717. /* j */ 0x08 | INT_SPEC | NO_E_MOD | NO_O_MOD,
  718. /* k */ 0x03 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  719. /* l */ 0x04 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  720. /* m */ 0x05 | INT_SPEC | NO_E_MOD,
  721. /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  722. /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  723. /* p */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  724. /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  725. /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  726. /* s */ 0x07 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  727. /* t */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  728. /* u */ 0x07 | INT_SPEC | NO_E_MOD,
  729. /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  730. /* w */ 0x02 | INT_SPEC | NO_E_MOD,
  731. /* x */ 0x09 | STACKED_SPEC | NO_O_MOD,
  732. /* y */ 0x09 | INT_SPEC,
  733. /* z */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  734. /* WARNING!!! These are dependent on the layout of struct tm!!! */
  735. #define FIELD_MAX (26+6+26)
  736. 60 /* 61? */, 59, 23, 31, 11, 0 /* 9999 */, 6, 0 /* 365 */,
  737. #define TP_OFFSETS (FIELD_MAX+8)
  738. 3, /* d */
  739. 3, /* e */
  740. 6, /* w */
  741. 2, /* k */
  742. 2, /* l */
  743. 4, /* m */
  744. 0, /* CURRENTLY UNUSED */
  745. /* NOTE: u,j,y order must be preserved as 6,7,5 seq is used in the code! */
  746. #define CALC_OFFSETS (TP_OFFSETS + 7)
  747. 6, /* u */
  748. 7, /* j */
  749. 5, /* y */
  750. 5, /* C */
  751. 2, /* H */
  752. 2, /* I */
  753. 1, /* M */
  754. 0, /* S */
  755. 5, /* Y */
  756. 6, /* a */
  757. 4, /* b, h */
  758. 2, /* p */
  759. 6, /* A */
  760. 4, /* B */
  761. 2, /* P */
  762. #define TP_CODES (TP_OFFSETS + 16 + 6)
  763. 2 | 16, /* d */
  764. 2, /* e */
  765. 0 | 16, /* w */
  766. 2, /* k */
  767. 2 | 32 | 0, /* l */
  768. 2 | 16 | 1, /* m */
  769. 0, /* CURRENTLY UNUSED */
  770. 0 | 16 | 8 , /* u */
  771. 4 | 16 | 1, /* j */
  772. 2 | 128 | 32 | 16 , /* y */
  773. 2 | 128 | 64 | 32 | 16 , /* C */
  774. 2 | 16, /* H */
  775. 2 | 32 | 16 | 0, /* I */
  776. 2 | 16, /* M */
  777. 2 | 16, /* S */
  778. 6 | 16, /* Y */
  779. 2, /* a */
  780. 2, /* b, h */
  781. 2 | 64, /* p */
  782. 2, /* A */
  783. 2, /* B */
  784. 2 | 64, /* P */
  785. #define STRINGS_NL_ITEM_START (TP_CODES + 16 + 6)
  786. _NL_ITEM_INDEX(ABDAY_1), /* a */
  787. _NL_ITEM_INDEX(ABMON_1), /* b, h */
  788. _NL_ITEM_INDEX(AM_STR), /* p */
  789. _NL_ITEM_INDEX(DAY_1), /* A */
  790. _NL_ITEM_INDEX(MON_1), /* B */
  791. _NL_ITEM_INDEX(AM_STR), /* P -- wrong! need lower case */
  792. #define STACKED_STRINGS_START (STRINGS_NL_ITEM_START+6)
  793. 6, 7, 8, 16, 24, 29, /* 6 - offsets from offset-count to strings */
  794. '\n', 0, /* 2 */
  795. '\t', 0, /* 2 */
  796. '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */
  797. '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */
  798. '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/
  799. '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */
  800. #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 43)
  801. _NL_ITEM_INDEX(D_T_FMT), /* c */
  802. _NL_ITEM_INDEX(D_FMT), /* x */
  803. _NL_ITEM_INDEX(T_FMT), /* X */
  804. _NL_ITEM_INDEX(T_FMT_AMPM), /* r */
  805. #ifdef ENABLE_ERA_CODE
  806. _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */
  807. _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */
  808. _NL_ITEM_INDEX(ERA_T_FMT), /* EX */
  809. #endif
  810. };
  811. static int load_field(int k, const struct tm *__restrict timeptr)
  812. {
  813. int r;
  814. int r_max;
  815. r = ((int *) timeptr)[k];
  816. r_max = spec[FIELD_MAX + k];
  817. if (k == 7) {
  818. r_max = 365;
  819. } else if (k == 5) {
  820. r += 1900;
  821. r_max = 9999;
  822. }
  823. if ((((unsigned int) r) > r_max) || ((k == 3) && !r)) {
  824. r = -1;
  825. }
  826. return r;
  827. }
  828. #define MAX_PUSH 4
  829. #ifdef __UCLIBC_MJN3_ONLY__
  830. #warning TODO: Check multibyte format string validity.
  831. #endif
  832. size_t attribute_hidden __UCXL(strftime)(char *__restrict s, size_t maxsize,
  833. const char *__restrict format,
  834. const struct tm *__restrict timeptr __LOCALE_PARAM )
  835. {
  836. long tzo;
  837. register const char *p;
  838. register const char *o;
  839. #ifndef __UCLIBC_HAS_TM_EXTENSIONS__
  840. const rule_struct *rsp;
  841. #endif
  842. const char *stack[MAX_PUSH];
  843. size_t count;
  844. size_t o_count;
  845. int field_val, i, j, lvl;
  846. int x[3]; /* wday, yday, year */
  847. int isofm, days;
  848. char buf[__UIM_BUFLEN_LONG];
  849. unsigned char mod;
  850. unsigned char code;
  851. __tzset(); /* We'll, let's get this out of the way. */
  852. lvl = 0;
  853. p = format;
  854. count = maxsize;
  855. LOOP:
  856. if (!count) {
  857. return 0;
  858. }
  859. if (!*p) {
  860. if (lvl == 0) {
  861. *s = 0; /* nul-terminate */
  862. return maxsize - count;
  863. }
  864. p = stack[--lvl];
  865. goto LOOP;
  866. }
  867. o_count = 1;
  868. if ((*(o = p) == '%') && (*++p != '%')) {
  869. o_count = 2;
  870. mod = ILLEGAL_SPEC;
  871. if ((*p == 'O') || (*p == 'E')) { /* modifier */
  872. mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD);
  873. ++o_count;
  874. ++p;
  875. }
  876. if ((((unsigned char)(((*p) | 0x20) - 'a')) >= 26)
  877. || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC)
  878. ) {
  879. if (!*p) {
  880. --p;
  881. --o_count;
  882. }
  883. goto OUTPUT;
  884. }
  885. code &= ILLEGAL_SPEC; /* modifiers are preserved in mod var. */
  886. if ((code & MASK_SPEC) == STACKED_SPEC) {
  887. if (lvl == MAX_PUSH) {
  888. goto OUTPUT; /* Stack full so treat as illegal spec. */
  889. }
  890. stack[lvl++] = ++p;
  891. if ((code &= 0xf) < 8) {
  892. p = ((const char *) spec) + STACKED_STRINGS_START + code;
  893. p += *((unsigned char *)p);
  894. goto LOOP;
  895. }
  896. p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START
  897. + (code & 7);
  898. #ifdef ENABLE_ERA_CODE
  899. if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
  900. && (*(o = __UCXL(nl_langinfo)(_NL_ITEM(LC_TIME,
  901. (int)(((unsigned char *)p)[4]))
  902. __LOCALE_ARG
  903. )))
  904. ) {
  905. p = o;
  906. goto LOOP;
  907. }
  908. #endif
  909. p = __UCXL(nl_langinfo)(_NL_ITEM(LC_TIME,
  910. (int)(*((unsigned char *)p)))
  911. __LOCALE_ARG
  912. );
  913. goto LOOP;
  914. }
  915. o = spec + 26; /* set to "????" */
  916. if ((code & MASK_SPEC) == CALC_SPEC) {
  917. if (*p == 's') {
  918. time_t t;
  919. /* Use a cast to silence the warning since *timeptr won't
  920. * be changed. */
  921. if ((t = _time_mktime((struct tm *) timeptr, 0))
  922. == ((time_t) -1)
  923. ) {
  924. o_count = 1;
  925. goto OUTPUT;
  926. }
  927. #ifdef TIME_T_IS_UNSIGNED
  928. o = _uintmaxtostr(buf + sizeof(buf) - 1,
  929. (uintmax_t) t,
  930. 10, __UIM_DECIMAL);
  931. #else
  932. o = _uintmaxtostr(buf + sizeof(buf) - 1,
  933. (uintmax_t) t,
  934. -10, __UIM_DECIMAL);
  935. #endif
  936. o_count = sizeof(buf);
  937. goto OUTPUT;
  938. } else if (((*p) | 0x20) == 'z') { /* 'z' or 'Z' */
  939. if (timeptr->tm_isdst < 0) {
  940. /* SUSv3 specifies this behavior for 'z', but we'll also
  941. * treat it as "no timezone info" for 'Z' too. */
  942. o_count = 0;
  943. goto OUTPUT;
  944. }
  945. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  946. #define RSP_TZUNLOCK ((void) 0)
  947. #define RSP_TZNAME timeptr->tm_zone
  948. #define RSP_GMT_OFFSET (-timeptr->tm_gmtoff)
  949. #else
  950. #define RSP_TZUNLOCK TZUNLOCK
  951. #define RSP_TZNAME rsp->tzname
  952. #define RSP_GMT_OFFSET rsp->gmt_offset
  953. TZLOCK;
  954. rsp = _time_tzinfo;
  955. if (timeptr->tm_isdst > 0) {
  956. ++rsp;
  957. }
  958. #endif
  959. if (*p == 'Z') {
  960. o = RSP_TZNAME;
  961. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  962. /* Sigh... blasted glibc extensions. Of course we can't
  963. * count on the pointer being valid. Best we can do is
  964. * handle NULL, which looks to be all that glibc does.
  965. * At least that catches the memset() with 0 case.
  966. * NOTE: We handle this case differently than glibc!
  967. * It uses system timezone name (based on tm_isdst) in this
  968. * case... although it always seems to use the embedded
  969. * tm_gmtoff value. What we'll do instead is treat the
  970. * timezone name as unknown/invalid and return "???". */
  971. if (!o) {
  972. o = "???";
  973. }
  974. #endif
  975. assert(o != NULL);
  976. #if 0
  977. if (!o) { /* PARANOIA */
  978. o = spec+30; /* empty string */
  979. }
  980. #endif
  981. o_count = SIZE_MAX;
  982. RSP_TZUNLOCK;
  983. goto OUTPUT;
  984. } else { /* z */
  985. *s = '+';
  986. if ((tzo = -RSP_GMT_OFFSET) < 0) {
  987. tzo = -tzo;
  988. *s = '-';
  989. }
  990. RSP_TZUNLOCK;
  991. ++s;
  992. --count;
  993. i = tzo / 60;
  994. field_val = ((i / 60) * 100) + (i % 60);
  995. i = 16 + 6; /* 0-fill, width = 4 */
  996. }
  997. } else {
  998. /* TODO: don't need year for U, W */
  999. for (i=0 ; i < 3 ; i++) {
  1000. if ((x[i] = load_field(spec[CALC_OFFSETS+i],timeptr)) < 0) {
  1001. goto OUTPUT;
  1002. }
  1003. }
  1004. i = 16 + 2; /* 0-fill, width = 2 */
  1005. if ((*p == 'U') || (*p == 'W')) {
  1006. field_val = ((x[1] - x[0]) + 7);
  1007. if (*p == 'W') {
  1008. ++field_val;
  1009. }
  1010. field_val /= 7;
  1011. if ((*p == 'W') && !x[0]) {
  1012. --field_val;
  1013. }
  1014. } else { /* ((*p == 'g') || (*p == 'G') || (*p == 'V')) */
  1015. ISO_LOOP:
  1016. isofm = (((x[1] - x[0]) + 11) % 7) - 3; /* [-3,3] */
  1017. if (x[1] < isofm) { /* belongs to previous year */
  1018. --x[2];
  1019. x[1] += 365 + __isleap(x[2]);
  1020. goto ISO_LOOP;
  1021. }
  1022. field_val = ((x[1] - isofm) / 7) + 1; /* week # */
  1023. days = 365 + __isleap(x[2]);
  1024. isofm = ((isofm + 7*53 + 3 - days)) %7 + days - 3; /* next year */
  1025. if (x[1] >= isofm) { /* next year */
  1026. x[1] -= days;
  1027. ++x[2];
  1028. goto ISO_LOOP;
  1029. }
  1030. if (*p != 'V') { /* need year */
  1031. field_val = x[2]; /* TODO: what if x[2] now 10000 ?? */
  1032. if (*p == 'g') {
  1033. field_val %= 100;
  1034. } else {
  1035. i = 16 + 6; /* 0-fill, width = 4 */
  1036. }
  1037. }
  1038. }
  1039. }
  1040. } else {
  1041. i = TP_OFFSETS + (code & 0x1f);
  1042. if ((field_val = load_field(spec[i],timeptr)) < 0) {
  1043. goto OUTPUT;
  1044. }
  1045. i = spec[i+(TP_CODES - TP_OFFSETS)];
  1046. j = (i & 128) ? 100: 12;
  1047. if (i & 64) {
  1048. field_val /= j;;
  1049. }
  1050. if (i & 32) {
  1051. field_val %= j;
  1052. if (((i&128) + field_val) == 0) { /* mod 12? == 0 */
  1053. field_val = j; /* set to 12 */
  1054. }
  1055. }
  1056. field_val += (i & 1);
  1057. if ((i & 8) && !field_val) {
  1058. field_val += 7;
  1059. }
  1060. }
  1061. if ((code & MASK_SPEC) == STRING_SPEC) {
  1062. o_count = SIZE_MAX;
  1063. field_val += spec[STRINGS_NL_ITEM_START + (code & 0xf)];
  1064. o = __UCXL(nl_langinfo)(_NL_ITEM(LC_TIME, field_val) __LOCALE_ARG );
  1065. } else {
  1066. o_count = ((i >> 1) & 3) + 1;
  1067. o = buf + o_count;
  1068. do {
  1069. *(char *)(--o) = '0' + (field_val % 10);
  1070. field_val /= 10;
  1071. } while (o > buf);
  1072. if (*buf == '0') {
  1073. *buf = ' ' + (i & 16);
  1074. }
  1075. }
  1076. }
  1077. OUTPUT:
  1078. ++p;
  1079. while (o_count && count && *o) {
  1080. *s++ = *o++;
  1081. --o_count;
  1082. --count;
  1083. }
  1084. goto LOOP;
  1085. }
  1086. __UCXL_ALIAS(strftime)
  1087. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1088. #endif
  1089. /**********************************************************************/
  1090. #if defined(L_strptime) || defined(L_strptime_l)
  1091. #define ISDIGIT(C) __isdigit_char((C))
  1092. #ifdef __UCLIBC_DO_XLOCALE
  1093. #define ISSPACE(C) isspace_l((C), locale_arg)
  1094. #else
  1095. #define ISSPACE(C) isspace((C))
  1096. #endif
  1097. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  1098. char attribute_hidden *__strptime(const char *__restrict buf, const char *__restrict format,
  1099. struct tm *__restrict tm)
  1100. {
  1101. return __strptime_l(buf, format, tm, __UCLIBC_CURLOCALE);
  1102. }
  1103. strong_alias(__strptime,strptime)
  1104. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1105. /* TODO:
  1106. * 1) %l and %k are space-padded, so "%l" by itself fails while " %l" succeeds.
  1107. * Both work for glibc. So, should we always strip spaces?
  1108. * 2) %Z
  1109. */
  1110. /* Notes:
  1111. * There are several differences between this strptime and glibc's strptime.
  1112. * 1) glibc strips leading space before numeric conversions.
  1113. * 2) glibc will read fields without whitespace in between. SUSv3 states
  1114. * that you must have whitespace between conversion operators. Besides,
  1115. * how do you know how long a number should be if there are leading 0s?
  1116. * 3) glibc attempts to compute some the struct tm fields based on the
  1117. * data retrieved; tm_wday in particular. I don't as I consider it
  1118. * another glibc attempt at mind-reading...
  1119. */
  1120. #define NO_E_MOD 0x80
  1121. #define NO_O_MOD 0x40
  1122. #define ILLEGAL_SPEC 0x3f
  1123. #define INT_SPEC 0x00 /* must be 0x00!! */
  1124. #define STRING_SPEC 0x10 /* must be 0x10!! */
  1125. #define CALC_SPEC 0x20
  1126. #define STACKED_SPEC 0x30
  1127. #define MASK_SPEC 0x30
  1128. /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */
  1129. static const unsigned char spec[] = {
  1130. /* A */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1131. /* B */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1132. /* C */ 0x08 | INT_SPEC | NO_O_MOD,
  1133. /* D */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1134. /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1135. /* F */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1136. /* G */ 0x0f | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1137. /* H */ 0x06 | INT_SPEC | NO_E_MOD,
  1138. /* I */ 0x07 | INT_SPEC | NO_E_MOD,
  1139. /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1140. /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1141. /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1142. /* M */ 0x04 | INT_SPEC | NO_E_MOD,
  1143. /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1144. /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1145. /* P */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1146. /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1147. /* R */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1148. /* S */ 0x05 | INT_SPEC | NO_E_MOD,
  1149. /* T */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1150. /* U */ 0x0c | INT_SPEC | NO_E_MOD,
  1151. /* V */ 0x0d | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1152. /* W */ 0x0c | INT_SPEC | NO_E_MOD,
  1153. /* X */ 0x0a | STACKED_SPEC | NO_O_MOD,
  1154. /* Y */ 0x0a | INT_SPEC | NO_O_MOD,
  1155. /* Z */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1156. /* WARNING! This assumes orderings:
  1157. * AM,PM
  1158. * ABDAY_1-ABDAY-7,DAY_1-DAY_7
  1159. * ABMON_1-ABMON_12,MON_1-MON12
  1160. * Also, there are exactly 6 bytes between 'Z' and 'a'.
  1161. */
  1162. #define STRINGS_NL_ITEM_START (26)
  1163. _NL_ITEM_INDEX(AM_STR), /* p (P) */
  1164. _NL_ITEM_INDEX(ABMON_1), /* B, b */
  1165. _NL_ITEM_INDEX(ABDAY_1), /* A, a */
  1166. 2,
  1167. 24,
  1168. 14,
  1169. /* a */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1170. /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1171. /* c */ 0x08 | STACKED_SPEC | NO_O_MOD,
  1172. /* d */ 0x00 | INT_SPEC | NO_E_MOD,
  1173. /* e */ 0x00 | INT_SPEC | NO_E_MOD,
  1174. /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1175. /* g */ 0x0e | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1176. /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1177. /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1178. /* j */ 0x01 | INT_SPEC | NO_E_MOD | NO_O_MOD,
  1179. /* k */ 0x06 | INT_SPEC | NO_E_MOD, /* glibc */
  1180. /* l */ 0x07 | INT_SPEC | NO_E_MOD, /* glibc */
  1181. /* m */ 0x02 | INT_SPEC | NO_E_MOD,
  1182. /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1183. /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1184. /* p */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1185. /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1186. /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1187. /* s */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1188. /* t */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1189. /* u */ 0x0b | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1190. /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1191. /* w */ 0x03 | INT_SPEC | NO_E_MOD,
  1192. /* x */ 0x09 | STACKED_SPEC | NO_O_MOD,
  1193. /* y */ 0x09 | INT_SPEC,
  1194. /* z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1195. #define INT_FIELD_START (26+6+26)
  1196. /* (field #) << 3 + lower bound (0|1) + correction 0:none, 2:-1, 4:-1900
  1197. * followed by upper bound prior to correction with 1=>366 and 2=>9999. */
  1198. /* d, e */ (3 << 3) + 1 + 0, 31,
  1199. /* j */ (7 << 3) + 1 + 2, /* 366 */ 1,
  1200. /* m */ (4 << 3) + 1 + 2, 12,
  1201. /* w */ (6 << 3) + 0 + 0, 6,
  1202. /* M */ (1 << 3) + 0 + 0, 59,
  1203. /* S */ 0 + 0 + 0, 60,
  1204. /* H (k) */ (2 << 3) + 0 + 0, 23,
  1205. /* I (l) */ (9 << 3) + 1 + 0, 12, /* goes with 8 -- am/pm */
  1206. /* C */ (10<< 3) + 0 + 0, 99,
  1207. /* y */ (11<< 3) + 0 + 0, 99,
  1208. /* Y */ (5 << 3) + 0 + 4, /* 9999 */ 2,
  1209. /* u */ (6 << 3) + 1 + 0, 7,
  1210. /* The following are processed and range-checked, but ignored otherwise. */
  1211. /* U, W */ (12<< 3) + 0 + 0, 53,
  1212. /* V */ (12<< 3) + 1 + 0, 53,
  1213. /* g */ (12<< 3) + 0 + 0, 99,
  1214. /* G */ (12<< 3) + 0 /*+ 4*/, /* 9999 */ 2, /* Note: -1 or 10000? */
  1215. #define STACKED_STRINGS_START (INT_FIELD_START+32)
  1216. 5, 6, 14, 22, 27, /* 5 - offsets from offset-count to strings */
  1217. ' ', 0, /* 2 - %n or %t */
  1218. '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */
  1219. '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */
  1220. '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/
  1221. '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */
  1222. #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 40)
  1223. _NL_ITEM_INDEX(D_T_FMT), /* c */
  1224. _NL_ITEM_INDEX(D_FMT), /* x */
  1225. _NL_ITEM_INDEX(T_FMT), /* X */
  1226. _NL_ITEM_INDEX(T_FMT_AMPM), /* r */
  1227. #ifdef ENABLE_ERA_CODE
  1228. _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */
  1229. _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */
  1230. _NL_ITEM_INDEX(ERA_T_FMT), /* EX */
  1231. #endif
  1232. };
  1233. #define MAX_PUSH 4
  1234. char attribute_hidden *__UCXL(strptime)(const char *__restrict buf, const char *__restrict format,
  1235. struct tm *__restrict tm __LOCALE_PARAM)
  1236. {
  1237. register const char *p;
  1238. char *o;
  1239. const char *stack[MAX_PUSH];
  1240. int i, j, lvl;
  1241. int fields[13];
  1242. unsigned char mod;
  1243. unsigned char code;
  1244. i = 0;
  1245. do {
  1246. fields[i] = INT_MIN;
  1247. } while (++i < 13);
  1248. lvl = 0;
  1249. p = format;
  1250. LOOP:
  1251. if (!*p) {
  1252. if (lvl == 0) { /* Done. */
  1253. if (fields[6] == 7) { /* Cleanup for %u here since just once. */
  1254. fields[6] = 0; /* Don't use mod in case unset. */
  1255. }
  1256. i = 0;
  1257. do { /* Store the values into tm. */
  1258. if (fields[i] != INT_MIN) {
  1259. ((int *) tm)[i] = fields[i];
  1260. }
  1261. } while (++i < 8);
  1262. return (char *) buf; /* Success. */
  1263. }
  1264. p = stack[--lvl];
  1265. goto LOOP;
  1266. }
  1267. if ((*p == '%') && (*++p != '%')) {
  1268. mod = ILLEGAL_SPEC;
  1269. if ((*p == 'O') || (*p == 'E')) { /* Modifier? */
  1270. mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD);
  1271. ++p;
  1272. }
  1273. if (!*p
  1274. || (((unsigned char)(((*p) | 0x20) - 'a')) >= 26)
  1275. || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC)
  1276. ) {
  1277. return NULL; /* Illegal spec. */
  1278. }
  1279. if ((code & MASK_SPEC) == STACKED_SPEC) {
  1280. if (lvl == MAX_PUSH) {
  1281. return NULL; /* Stack full so treat as illegal spec. */
  1282. }
  1283. stack[lvl++] = ++p;
  1284. if ((code &= 0xf) < 8) {
  1285. p = ((const char *) spec) + STACKED_STRINGS_START + code;
  1286. p += *((unsigned char *)p);
  1287. goto LOOP;
  1288. }
  1289. p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START
  1290. + (code & 7);
  1291. #ifdef ENABLE_ERA_CODE
  1292. if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
  1293. && (*(o = __UCXL(nl_langinfo)(_NL_ITEM(LC_TIME,
  1294. (int)(((unsigned char *)p)[4]))
  1295. __LOCALE_ARG
  1296. )))
  1297. ) {
  1298. p = o;
  1299. goto LOOP;
  1300. }
  1301. #endif
  1302. p = __UCXL(nl_langinfo)(_NL_ITEM(LC_TIME,
  1303. (int)(*((unsigned char *)p)))
  1304. __LOCALE_ARG );
  1305. goto LOOP;
  1306. }
  1307. ++p;
  1308. if ((code & MASK_SPEC) == STRING_SPEC) {
  1309. code &= 0xf;
  1310. j = spec[STRINGS_NL_ITEM_START + 3 + code];
  1311. i = _NL_ITEM(LC_TIME, spec[STRINGS_NL_ITEM_START + code]);
  1312. /* Go backwards to check full names before abreviations. */
  1313. do {
  1314. --j;
  1315. o = __UCXL(nl_langinfo)(i+j __LOCALE_ARG);
  1316. if (!__UCXL(strncasecmp)(buf,o,__strlen(o) __LOCALE_ARG) && *o) {
  1317. do { /* Found a match. */
  1318. ++buf;
  1319. } while (*++o);
  1320. if (!code) { /* am/pm */
  1321. fields[8] = j * 12;
  1322. if (fields[9] >= 0) { /* We have a previous %I or %l. */
  1323. fields[2] = fields[9] + fields[8];
  1324. }
  1325. } else { /* day (4) or month (6) */
  1326. fields[2 + (code << 1)]
  1327. = j % (spec[STRINGS_NL_ITEM_START + 3 + code] >> 1);
  1328. }
  1329. goto LOOP;
  1330. }
  1331. } while (j);
  1332. return NULL; /* Failed to match. */
  1333. }
  1334. if ((code & MASK_SPEC) == CALC_SPEC) {
  1335. if ((code &= 0xf) < 1) { /* s or z*/
  1336. time_t t;
  1337. o = (char *) buf;
  1338. i = errno;
  1339. __set_errno(0);
  1340. if (!ISSPACE(*buf)) { /* Signal an error if whitespace. */
  1341. #ifdef TIME_T_IS_UNSIGNED
  1342. t = __UCXL(strtoul)(buf, &o, 10 __LOCALE_ARG);
  1343. #else
  1344. t = __UCXL(strtol)(buf, &o, 10 __LOCALE_ARG);
  1345. #endif
  1346. }
  1347. if ((o == buf) || errno) { /* Not a number or overflow. */
  1348. return NULL;
  1349. }
  1350. __set_errno(i); /* Restore errno. */
  1351. buf = o;
  1352. if (!code) { /* s */
  1353. __localtime_r(&t, tm); /* TODO: check for failure? */
  1354. i = 0;
  1355. do { /* Now copy values from tm to fields. */
  1356. fields[i] = ((int *) tm)[i];
  1357. } while (++i < 8);
  1358. }
  1359. }
  1360. /* TODO: glibc treats %Z as a nop. For now, do the same. */
  1361. goto LOOP;
  1362. }
  1363. assert((code & MASK_SPEC) == INT_SPEC);
  1364. {
  1365. register const unsigned char *x;
  1366. code &= 0xf;
  1367. x = spec + INT_FIELD_START + (code << 1);
  1368. if ((j = x[1]) < 3) { /* upper bound (inclusive) */
  1369. j = ((j==1) ? 366 : 9999);
  1370. }
  1371. i = -1;
  1372. while (ISDIGIT(*buf)) {
  1373. if (i < 0) {
  1374. i = 0;
  1375. }
  1376. if ((i = 10*i + (*buf - '0')) > j) { /* Overflow. */
  1377. return NULL;
  1378. }
  1379. ++buf;
  1380. }
  1381. if (i < (*x & 1)) { /* This catches no-digit case too. */
  1382. return NULL;
  1383. }
  1384. if (*x & 2) {
  1385. --i;
  1386. }
  1387. if (*x & 4) {
  1388. i -= 1900;
  1389. }
  1390. if (*x == (9 << 3) + 1 + 0) { /* %I or %l */
  1391. if (i == 12) {
  1392. i = 0;
  1393. }
  1394. if (fields[8] >= 0) { /* We have a previous %p or %P. */
  1395. fields[2] = i + fields[8];
  1396. }
  1397. }
  1398. fields[(*x) >> 3] = i;
  1399. if (((unsigned char)(*x - (10<< 3) + 0 + 0)) <= 8) { /* %C or %y */
  1400. if ((j = fields[10]) < 0) { /* No %C, so i must be %y data. */
  1401. if (i <= 68) { /* Map [0-68] to 2000+i */
  1402. i += 100;
  1403. }
  1404. } else { /* Have %C data, but what about %y? */
  1405. if ((i = fields[11]) < 0) { /* No %y data. */
  1406. i = 0; /* Treat %y val as 0 following glibc's example. */
  1407. }
  1408. i += 100*(j - 19);
  1409. }
  1410. fields[5] = i;
  1411. }
  1412. }
  1413. goto LOOP;
  1414. } else if (ISSPACE(*p)) {
  1415. ++p;
  1416. while (ISSPACE(*buf)) {
  1417. ++buf;
  1418. }
  1419. goto LOOP;
  1420. } else if (*buf++ == *p++) {
  1421. goto LOOP;
  1422. }
  1423. return NULL;
  1424. }
  1425. __UCXL_ALIAS(strptime)
  1426. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1427. #endif
  1428. /**********************************************************************/
  1429. #ifdef L_time
  1430. #ifndef __BCC__
  1431. #error The uClibc version of time is in sysdeps/linux/common.
  1432. #endif
  1433. time_t time(register time_t *tloc)
  1434. {
  1435. struct timeval tv;
  1436. register struct timeval *p = &tv;
  1437. gettimeofday(p, NULL); /* This should never fail... */
  1438. if (tloc) {
  1439. *tloc = p->tv_sec;
  1440. }
  1441. return p->tv_sec;
  1442. }
  1443. #endif
  1444. /**********************************************************************/
  1445. #ifdef L_tzset
  1446. static const char vals[] = {
  1447. 'T', 'Z', 0, /* 3 */
  1448. 'U', 'T', 'C', 0, /* 4 */
  1449. 25, 60, 60, 1, /* 4 */
  1450. '.', 1, /* M */
  1451. 5, '.', 1,
  1452. 6, 0, 0, /* Note: overloaded for non-M non-J case... */
  1453. 0, 1, 0, /* J */
  1454. ',', 'M', '4', '.', '1', '.', '0',
  1455. ',', 'M', '1', '0', '.', '5', '.', '0', 0
  1456. };
  1457. #define TZ vals
  1458. #define UTC (vals + 3)
  1459. #define RANGE (vals + 7)
  1460. #define RULE (vals + 11 - 1)
  1461. #define DEFAULT_RULES (vals + 22)
  1462. /* Initialize to UTC. */
  1463. int daylight = 0;
  1464. long timezone = 0;
  1465. char *tzname[2] = { (char *) UTC, (char *) (UTC-1) };
  1466. #ifdef __UCLIBC_HAS_THREADS__
  1467. pthread_mutex_t _time_tzlock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
  1468. #endif
  1469. rule_struct _time_tzinfo[2];
  1470. static const char *getoffset(register const char *e, long *pn)
  1471. {
  1472. register const char *s = RANGE-1;
  1473. long n;
  1474. int f;
  1475. n = 0;
  1476. f = -1;
  1477. do {
  1478. ++s;
  1479. if (__isdigit_char(*e)) {
  1480. f = *e++ - '0';
  1481. }
  1482. if (__isdigit_char(*e)) {
  1483. f = 10 * f + (*e++ - '0');
  1484. }
  1485. if (((unsigned int)f) >= *s) {
  1486. return NULL;
  1487. }
  1488. n = (*s) * n + f;
  1489. f = 0;
  1490. if (*e == ':') {
  1491. ++e;
  1492. --f;
  1493. }
  1494. } while (*s > 1);
  1495. *pn = n;
  1496. return e;
  1497. }
  1498. static const char *getnumber(register const char *e, int *pn)
  1499. {
  1500. #ifdef __BCC__
  1501. /* bcc can optimize the counter if it thinks it is a pointer... */
  1502. register const char *n = (const char *) 3;
  1503. int f;
  1504. f = 0;
  1505. while (n && __isdigit_char(*e)) {
  1506. f = 10 * f + (*e++ - '0');
  1507. --n;
  1508. }
  1509. *pn = f;
  1510. return (n == (const char *) 3) ? NULL : e;
  1511. #else /* __BCC__ */
  1512. int n, f;
  1513. n = 3;
  1514. f = 0;
  1515. while (n && __isdigit_char(*e)) {
  1516. f = 10 * f + (*e++ - '0');
  1517. --n;
  1518. }
  1519. *pn = f;
  1520. return (n == 3) ? NULL : e;
  1521. #endif /* __BCC__ */
  1522. }
  1523. #ifdef __UCLIBC_MJN3_ONLY__
  1524. #warning CONSIDER: Should we preserve errno from open/read/close errors re TZ file?
  1525. #endif
  1526. #ifdef __UCLIBC_HAS_TZ_FILE__
  1527. #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  1528. static int TZ_file_read; /* Let BSS initialization set this to 0. */
  1529. #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
  1530. static char *read_TZ_file(char *buf)
  1531. {
  1532. int fd;
  1533. ssize_t r;
  1534. size_t todo;
  1535. char *p = NULL;
  1536. if ((fd = __open(__UCLIBC_TZ_FILE_PATH__, O_RDONLY)) >= 0) {
  1537. todo = TZ_BUFLEN;
  1538. p = buf;
  1539. do {
  1540. if ((r = __read(fd, p, todo)) < 0) {
  1541. goto ERROR;
  1542. }
  1543. if (r == 0) {
  1544. break;
  1545. }
  1546. p += r;
  1547. todo -= r;
  1548. } while (todo);
  1549. if ((p > buf) && (p[-1] == '\n')) { /* Must end with newline. */
  1550. p[-1] = 0;
  1551. p = buf;
  1552. #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  1553. ++TZ_file_read;
  1554. #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
  1555. } else {
  1556. ERROR:
  1557. p = NULL;
  1558. }
  1559. __close(fd);
  1560. }
  1561. return p;
  1562. }
  1563. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1564. void attribute_hidden __tzset(void)
  1565. {
  1566. register const char *e;
  1567. register char *s;
  1568. long off;
  1569. short *p;
  1570. rule_struct new_rules[2];
  1571. int n, count, f;
  1572. char c;
  1573. #ifdef __UCLIBC_HAS_TZ_FILE__
  1574. char buf[TZ_BUFLEN];
  1575. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1576. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1577. static char oldval[TZ_BUFLEN]; /* BSS-zero'd. */
  1578. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1579. TZLOCK;
  1580. e = __getenv(TZ); /* TZ env var always takes precedence. */
  1581. #if defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__)
  1582. /* Put this inside the lock to prevent the possiblity of two different
  1583. * timezones being used in a threaded app. */
  1584. if (e != NULL) {
  1585. TZ_file_read = 0; /* Reset if the TZ env var is set. */
  1586. } else if (TZ_file_read > 0) {
  1587. goto FAST_DONE;
  1588. }
  1589. #endif /* defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__) */
  1590. /* Warning!!! Since uClibc doesn't do lib locking, the following is
  1591. * potentially unsafe in a multi-threaded program since it is remotely
  1592. * possible that another thread could call setenv() for TZ and overwrite
  1593. * the string being parsed. So, don't do that... */
  1594. if ((!e /* TZ env var not set... */
  1595. #ifdef __UCLIBC_HAS_TZ_FILE__
  1596. && !(e = read_TZ_file(buf)) /* and no file or invalid file */
  1597. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1598. ) || !*e) { /* or set to empty string. */
  1599. ILLEGAL: /* TODO: Clean up the following... */
  1600. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1601. *oldval = 0; /* Set oldval to an empty string. */
  1602. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1603. __memset(_time_tzinfo, 0, 2*sizeof(rule_struct));
  1604. __strcpy(_time_tzinfo[0].tzname, UTC);
  1605. goto DONE;
  1606. }
  1607. if (*e == ':') { /* Ignore leading ':'. */
  1608. ++e;
  1609. }
  1610. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1611. if (__strcmp(e, oldval) == 0) { /* Same string as last time... */
  1612. goto FAST_DONE; /* So nothing to do. */
  1613. }
  1614. /* Make a copy of the TZ env string. It won't be nul-terminated if
  1615. * it is too long, but it that case it will be illegal and will be reset
  1616. * to the empty string anyway. */
  1617. __strncpy(oldval, e, TZ_BUFLEN);
  1618. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1619. count = 0;
  1620. new_rules[1].tzname[0] = 0;
  1621. LOOP:
  1622. /* Get std or dst name. */
  1623. c = 0;
  1624. if (*e == '<') {
  1625. ++e;
  1626. c = '>';
  1627. }
  1628. s = new_rules[count].tzname;
  1629. n = 0;
  1630. while (*e
  1631. && isascii(*e) /* SUSv3 requires char in portable char set. */
  1632. && (isalpha(*e)
  1633. || (c && (isalnum(*e) || (*e == '+') || (*e == '-'))))
  1634. ) {
  1635. *s++ = *e++;
  1636. if (++n > TZNAME_MAX) {
  1637. goto ILLEGAL;
  1638. }
  1639. }
  1640. *s = 0;
  1641. if ((n < 3) /* Check for minimum length. */
  1642. || (c && (*e++ != c)) /* Match any quoting '<'. */
  1643. ) {
  1644. goto ILLEGAL;
  1645. }
  1646. /* Get offset */
  1647. s = (char *) e;
  1648. if ((*e != '-') && (*e != '+')) {
  1649. if (count && !__isdigit_char(*e)) {
  1650. off -= 3600; /* Default to 1 hour ahead of std. */
  1651. goto SKIP_OFFSET;
  1652. }
  1653. --e;
  1654. }
  1655. ++e;
  1656. if (!(e = getoffset(e, &off))) {
  1657. goto ILLEGAL;
  1658. }
  1659. if (*s == '-') {
  1660. off = -off; /* Save off in case needed for dst default. */
  1661. }
  1662. SKIP_OFFSET:
  1663. new_rules[count].gmt_offset = off;
  1664. if (!count) {
  1665. new_rules[1].gmt_offset = off; /* Shouldn't be needed... */
  1666. if (*e) {
  1667. ++count;
  1668. goto LOOP;
  1669. }
  1670. } else { /* OK, we have dst, so get some rules. */
  1671. count = 0;
  1672. if (!*e) { /* No rules so default to US rules. */
  1673. e = DEFAULT_RULES;
  1674. }
  1675. do {
  1676. if (*e++ != ',') {
  1677. goto ILLEGAL;
  1678. }
  1679. n = 365;
  1680. s = (char *) RULE;
  1681. if ((c = *e++) == 'M') {
  1682. n = 12;
  1683. } else if (c == 'J') {
  1684. s += 8;
  1685. } else {
  1686. --e;
  1687. c = 0;
  1688. s += 6;
  1689. }
  1690. *(p = &new_rules[count].rule_type) = c;
  1691. if (c != 'M') {
  1692. p -= 2;
  1693. }
  1694. do {
  1695. ++s;
  1696. if (!(e = getnumber(e, &f))
  1697. || (((unsigned int)(f - s[1])) > n)
  1698. || (*s && (*e++ != *s))
  1699. ) {
  1700. goto ILLEGAL;
  1701. }
  1702. *--p = f;
  1703. } while ((n = *(s += 2)) > 0);
  1704. off = 2 * 60 * 60; /* Default to 2:00:00 */
  1705. if (*e == '/') {
  1706. ++e;
  1707. if (!(e = getoffset(e, &off))) {
  1708. goto ILLEGAL;
  1709. }
  1710. }
  1711. new_rules[count].dst_offset = off;
  1712. } while (++count < 2);
  1713. if (*e) {
  1714. goto ILLEGAL;
  1715. }
  1716. }
  1717. __memcpy(_time_tzinfo, new_rules, sizeof(new_rules));
  1718. DONE:
  1719. tzname[0] = _time_tzinfo[0].tzname;
  1720. tzname[1] = _time_tzinfo[1].tzname;
  1721. daylight = !!_time_tzinfo[1].tzname[0];
  1722. timezone = _time_tzinfo[0].gmt_offset;
  1723. #if defined(__UCLIBC_HAS_TZ_FILE__) || defined(__UCLIBC_HAS_TZ_CACHING__)
  1724. FAST_DONE:
  1725. #endif
  1726. TZUNLOCK;
  1727. }
  1728. strong_alias(__tzset,tzset)
  1729. #endif
  1730. /**********************************************************************/
  1731. /* #ifdef L_utime */
  1732. /* utime is a syscall in both linux and elks. */
  1733. /* int utime(const char *path, const struct utimbuf *times) */
  1734. /* #endif */
  1735. /**********************************************************************/
  1736. /* Non-SUSv3 */
  1737. /**********************************************************************/
  1738. #ifdef L_utimes
  1739. #ifndef __BCC__
  1740. #error The uClibc version of utimes is in sysdeps/linux/common.
  1741. #endif
  1742. #include <utime.h>
  1743. #include <sys/time.h>
  1744. int utimes(const char *filename, register const struct timeval *tvp)
  1745. {
  1746. register struct utimbuf *p = NULL;
  1747. struct utimbuf utb;
  1748. if (tvp) {
  1749. p = &utb;
  1750. p->actime = tvp[0].tv_sec;
  1751. p->modtime = tvp[1].tv_sec;
  1752. }
  1753. return utime(filename, p);
  1754. }
  1755. #endif
  1756. /**********************************************************************/
  1757. #ifdef L__time_t2tm
  1758. static const uint16_t _vals[] = {
  1759. 60, 60, 24, 7 /* special */, 36524, 1461, 365, 0
  1760. };
  1761. static const unsigned char days[] = {
  1762. 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */
  1763. 29,
  1764. };
  1765. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  1766. static const char utc_string[] = "UTC";
  1767. #endif
  1768. /* Notes:
  1769. * If time_t is 32 bits, then no overflow is possible.
  1770. * It time_t is > 32 bits, this needs to be adjusted to deal with overflow.
  1771. */
  1772. /* Note: offset is the correction in _days_ to *timer! */
  1773. struct tm attribute_hidden *_time_t2tm(const time_t *__restrict timer,
  1774. int offset, struct tm *__restrict result)
  1775. {
  1776. register int *p;
  1777. time_t t1, t, v;
  1778. int wday; /* Note: wday can be uninitialized. */
  1779. {
  1780. register const uint16_t *vp;
  1781. t = *timer;
  1782. p = (int *) result;
  1783. p[7] = 0;
  1784. vp = _vals;
  1785. do {
  1786. if ((v = *vp) == 7) {
  1787. /* Overflow checking, assuming time_t is long int... */
  1788. #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L)
  1789. #if (INT_MAX == 2147483647L) && (LONG_MAX == 9223372036854775807L)
  1790. /* Valid range for t is [-784223472856L, 784223421720L].
  1791. * Outside of this range, the tm_year field will overflow. */
  1792. if (((unsigned long)(t + offset- -784223472856L))
  1793. > (784223421720L - -784223472856L)
  1794. ) {
  1795. return NULL;
  1796. }
  1797. #else
  1798. #error overflow conditions unknown
  1799. #endif
  1800. #endif
  1801. /* We have days since the epoch, so caluclate the weekday. */
  1802. #if defined(__BCC__) && TIME_T_IS_UNSIGNED
  1803. wday = (t + 4) % (*vp); /* t is unsigned */
  1804. #else
  1805. wday = ((int)((t % (*vp)) + 11)) % ((int)(*vp)); /* help bcc */
  1806. #endif
  1807. /* Set divisor to days in 400 years. Be kind to bcc... */
  1808. v = ((time_t)(vp[1])) << 2;
  1809. ++v;
  1810. /* Change to days since 1/1/1601 so that for 32 bit time_t
  1811. * values, we'll have t >= 0. This should be changed for
  1812. * archs with larger time_t types.
  1813. * Also, correct for offset since a multiple of 7. */
  1814. /* TODO: Does this still work on archs with time_t > 32 bits? */
  1815. t += (135140L - 366) + offset; /* 146097 - (365*30 + 7) -366 */
  1816. }
  1817. #if defined(__BCC__) && TIME_T_IS_UNSIGNED
  1818. t -= ((t1 = t / v) * v);
  1819. #else
  1820. if ((t -= ((t1 = t / v) * v)) < 0) {
  1821. t += v;
  1822. --t1;
  1823. }
  1824. #endif
  1825. if ((*vp == 7) && (t == v-1)) {
  1826. --t; /* Correct for 400th year leap case */
  1827. ++p[4]; /* Stash the extra day... */
  1828. }
  1829. #if defined(__BCC__) && 0
  1830. *p = t1;
  1831. if (v <= 60) {
  1832. *p = t;
  1833. t = t1;
  1834. }
  1835. ++p;
  1836. #else
  1837. if (v <= 60) {
  1838. *p++ = t;
  1839. t = t1;
  1840. } else {
  1841. *p++ = t1;
  1842. }
  1843. #endif
  1844. } while (*++vp);
  1845. }
  1846. if (p[-1] == 4) {
  1847. --p[-1];
  1848. t = 365;
  1849. }
  1850. *p += ((int) t); /* result[7] .. tm_yday */
  1851. p -= 2; /* at result[5] */
  1852. #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L)
  1853. /* Protect against overflow. TODO: Unecessary if int arith wraps? */
  1854. *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + (p[1] - 299); /* tm_year */
  1855. #else
  1856. *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + p[1] - 299; /* tm_year */
  1857. #endif
  1858. p[1] = wday; /* result[6] .. tm_wday */
  1859. {
  1860. register const unsigned char *d = days;
  1861. wday = 1900 + *p;
  1862. if (__isleap(wday)) {
  1863. d += 11;
  1864. }
  1865. wday = p[2] + 1; /* result[7] .. tm_yday */
  1866. *--p = 0; /* at result[4] .. tm_mon */
  1867. while (wday > *d) {
  1868. wday -= *d;
  1869. if (*d == 29) {
  1870. d -= 11; /* Backup to non-leap Feb. */
  1871. }
  1872. ++d;
  1873. ++*p; /* Increment tm_mon. */
  1874. }
  1875. p[-1] = wday; /* result[3] .. tm_mday */
  1876. }
  1877. /* TODO -- should this be 0? */
  1878. p[4] = 0; /* result[8] .. tm_isdst */
  1879. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  1880. result->tm_gmtoff = 0;
  1881. result->tm_zone = utc_string;
  1882. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  1883. return result;
  1884. }
  1885. #endif
  1886. /**********************************************************************/
  1887. #ifdef L___time_tm
  1888. struct tm __time_tm; /* Global shared by gmtime() and localtime(). */
  1889. #endif
  1890. /**********************************************************************/
  1891. #ifdef L__time_mktime
  1892. time_t attribute_hidden _time_mktime(struct tm *timeptr, int store_on_success)
  1893. {
  1894. time_t t;
  1895. TZLOCK;
  1896. __tzset();
  1897. t = _time_mktime_tzi(timeptr, store_on_success, _time_tzinfo);
  1898. TZUNLOCK;
  1899. return t;
  1900. }
  1901. #endif
  1902. /**********************************************************************/
  1903. #ifdef L__time_mktime_tzi
  1904. static const unsigned char __vals[] = {
  1905. 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */
  1906. 29,
  1907. };
  1908. time_t attribute_hidden _time_mktime_tzi(struct tm *timeptr, int store_on_success,
  1909. rule_struct *tzi)
  1910. {
  1911. #ifdef __BCC__
  1912. long days, secs;
  1913. #else
  1914. long long secs;
  1915. #endif
  1916. time_t t;
  1917. struct tm x;
  1918. /* 0:sec 1:min 2:hour 3:mday 4:mon 5:year 6:wday 7:yday 8:isdst */
  1919. register int *p = (int *) &x;
  1920. register const unsigned char *s;
  1921. int d, default_dst;
  1922. __memcpy(p, timeptr, sizeof(struct tm));
  1923. if (!tzi[1].tzname[0]) { /* No dst in this timezone, */
  1924. p[8] = 0; /* so set tm_isdst to 0. */
  1925. }
  1926. default_dst = 0;
  1927. if (p[8]) { /* Either dst or unknown? */
  1928. default_dst = 1; /* Assume advancing (even if unknown). */
  1929. p[8] = ((p[8] > 0) ? 1 : -1); /* Normalize so abs() <= 1. */
  1930. }
  1931. d = 400;
  1932. p[5] = (p[5] - ((p[6] = p[5]/d) * d)) + (p[7] = p[4]/12);
  1933. if ((p[4] -= 12 * p[7]) < 0) {
  1934. p[4] += 12;
  1935. --p[5];
  1936. }
  1937. s = __vals;
  1938. d = (p[5] += 1900); /* Correct year. Now between 1900 and 2300. */
  1939. if (__isleap(d)) {
  1940. s += 11;
  1941. }
  1942. p[7] = 0;
  1943. d = p[4];
  1944. while (d) {
  1945. p[7] += *s;
  1946. if (*s == 29) {
  1947. s -= 11; /* Backup to non-leap Feb. */
  1948. }
  1949. ++s;
  1950. --d;
  1951. }
  1952. #ifdef __BCC__
  1953. d = p[5] - 1;
  1954. days = -719163L + ((long)d)*365 + ((d/4) - (d/100) + (d/400) + p[3] + p[7]);
  1955. secs = p[0] + 60*( p[1] + 60*((long)(p[2])) )
  1956. + tzi[default_dst].gmt_offset;
  1957. DST_CORRECT:
  1958. if (secs < 0) {
  1959. secs += 120009600L;
  1960. days -= 1389;
  1961. }
  1962. if ( ((unsigned long)(days + secs/86400L)) > 49710L) {
  1963. t = ((time_t)(-1));
  1964. goto DONE;
  1965. }
  1966. secs += (days * 86400L);
  1967. #else
  1968. d = p[5] - 1;
  1969. d = -719163L + d*365 + (d/4) - (d/100) + (d/400);
  1970. secs = p[0]
  1971. + tzi[default_dst].gmt_offset
  1972. + 60*( p[1]
  1973. + 60*(p[2]
  1974. + 24*(((146073L * ((long long)(p[6])) + d)
  1975. + p[3]) + p[7])));
  1976. DST_CORRECT:
  1977. if (((unsigned long long)(secs - LONG_MIN))
  1978. > (((unsigned long long)LONG_MAX) - LONG_MIN)
  1979. ) {
  1980. t = ((time_t)(-1));
  1981. goto DONE;
  1982. }
  1983. #endif
  1984. d = ((struct tm *)p)->tm_isdst;
  1985. t = secs;
  1986. __time_localtime_tzi(&t, (struct tm *)p, tzi);
  1987. if (t == ((time_t)(-1))) { /* Remember, time_t can be unsigned. */
  1988. goto DONE;
  1989. }
  1990. if ((d < 0) && (((struct tm *)p)->tm_isdst != default_dst)) {
  1991. #ifdef __BCC__
  1992. secs -= (days * 86400L);
  1993. #endif
  1994. secs += (tzi[1-default_dst].gmt_offset
  1995. - tzi[default_dst].gmt_offset);
  1996. goto DST_CORRECT;
  1997. }
  1998. if (store_on_success) {
  1999. __memcpy(timeptr, p, sizeof(struct tm));
  2000. }
  2001. DONE:
  2002. return t;
  2003. }
  2004. #endif
  2005. /**********************************************************************/
  2006. #if defined(L_wcsftime) || defined(L_wcsftime_l)
  2007. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  2008. extern size_t __wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
  2009. __const wchar_t *__restrict __format,
  2010. __const struct tm *__restrict __timeptr,
  2011. __locale_t __loc) __THROW attribute_hidden;
  2012. size_t wcsftime(wchar_t *__restrict s, size_t maxsize,
  2013. const wchar_t *__restrict format,
  2014. const struct tm *__restrict timeptr)
  2015. {
  2016. return __wcsftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE);
  2017. }
  2018. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  2019. size_t attribute_hidden __UCXL(wcsftime)(wchar_t *__restrict s, size_t maxsize,
  2020. const wchar_t *__restrict format,
  2021. const struct tm *__restrict timeptr __LOCALE_PARAM )
  2022. {
  2023. #warning wcsftime always fails
  2024. return 0; /* always fail */
  2025. }
  2026. __UCXL_ALIAS(wcsftime)
  2027. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  2028. #endif
  2029. /**********************************************************************/
  2030. #ifdef L_dysize
  2031. /* Return the number of days in YEAR. */
  2032. int dysize(int year)
  2033. {
  2034. return __isleap(year) ? 366 : 365;
  2035. }
  2036. #endif
  2037. /**********************************************************************/