time.c 62 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 _GNU_SOURCE
  130. #include <stdio.h>
  131. #include <stdlib.h>
  132. #include <stddef.h>
  133. #include <string.h>
  134. #include <time.h>
  135. #include <sys/time.h>
  136. #include <limits.h>
  137. #include <assert.h>
  138. #include <errno.h>
  139. #include <ctype.h>
  140. #include <langinfo.h>
  141. #include <locale.h>
  142. #include <fcntl.h>
  143. #include <unistd.h>
  144. #include <bits/uClibc_uintmaxtostr.h>
  145. #ifdef __UCLIBC_HAS_WCHAR__
  146. #include <wchar.h>
  147. #endif
  148. #ifdef __UCLIBC_HAS_XLOCALE__
  149. #include <xlocale.h>
  150. #endif
  151. libc_hidden_proto(asctime)
  152. libc_hidden_proto(asctime_r)
  153. libc_hidden_proto(ctime)
  154. libc_hidden_proto(localtime)
  155. libc_hidden_proto(localtime_r)
  156. libc_hidden_proto(memset)
  157. libc_hidden_proto(memcpy)
  158. libc_hidden_proto(strcmp)
  159. libc_hidden_proto(strcpy)
  160. libc_hidden_proto(strlen)
  161. libc_hidden_proto(strncpy)
  162. libc_hidden_proto(strnlen)
  163. /* libc_hidden_proto(sprintf) */
  164. libc_hidden_proto(open)
  165. libc_hidden_proto(read)
  166. libc_hidden_proto(close)
  167. libc_hidden_proto(getenv)
  168. libc_hidden_proto(tzset)
  169. libc_hidden_proto(gettimeofday)
  170. libc_hidden_proto(strncasecmp)
  171. libc_hidden_proto(strtol)
  172. libc_hidden_proto(strtoul)
  173. libc_hidden_proto(nl_langinfo)
  174. #ifdef __UCLIBC_HAS_XLOCALE__
  175. libc_hidden_proto(strncasecmp_l)
  176. libc_hidden_proto(strtol_l)
  177. libc_hidden_proto(strtoul_l)
  178. libc_hidden_proto(nl_langinfo_l)
  179. libc_hidden_proto(__ctype_b_loc)
  180. #else
  181. libc_hidden_proto(__ctype_b)
  182. #endif
  183. #ifndef __isleap
  184. #define __isleap(y) ( !((y) % 4) && ( ((y) % 100) || !((y) % 400) ) )
  185. #endif
  186. #ifndef TZNAME_MAX
  187. #define TZNAME_MAX _POSIX_TZNAME_MAX
  188. #endif
  189. /**********************************************************************/
  190. /* The era code is currently unfinished. */
  191. /* #define ENABLE_ERA_CODE */
  192. #define TZ_BUFLEN (2*TZNAME_MAX + 56)
  193. #ifdef __UCLIBC_HAS_TZ_FILE__
  194. #include <sys/stat.h>
  195. #include "paths.h"
  196. /* ":<tzname>+hh:mm:ss<tzname>+hh:mm:ss,Mmm.w.d/hh:mm:ss,Mmm.w.d/hh:mm:ss" + nul */
  197. /* 1 + 2*(1+TZNAME_MAX+1 + 9 + 7 + 9) + 1 = 2*TZNAME_MAX + 56 */
  198. #else /* __UCLIBC_HAS_TZ_FILE__ */
  199. /* Probably no longer needed. */
  200. #undef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  201. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  202. /**********************************************************************/
  203. extern struct tm __time_tm attribute_hidden;
  204. typedef struct {
  205. long gmt_offset;
  206. long dst_offset;
  207. short day; /* for J or normal */
  208. short week;
  209. short month;
  210. short rule_type; /* J, M, \0 */
  211. char tzname[TZNAME_MAX+1];
  212. } rule_struct;
  213. #ifdef __UCLIBC_HAS_THREADS__
  214. # include <pthread.h>
  215. extern pthread_mutex_t _time_tzlock attribute_hidden;
  216. #endif
  217. #define TZLOCK __pthread_mutex_lock(&_time_tzlock)
  218. #define TZUNLOCK __pthread_mutex_unlock(&_time_tzlock)
  219. extern rule_struct _time_tzinfo[2] attribute_hidden;
  220. extern struct tm *_time_t2tm(const time_t *__restrict timer,
  221. int offset, struct tm *__restrict result) attribute_hidden;
  222. extern time_t _time_mktime(struct tm *timeptr, int store_on_success) attribute_hidden;
  223. extern struct tm *__time_localtime_tzi(const time_t *__restrict timer,
  224. struct tm *__restrict result,
  225. rule_struct *tzi) attribute_hidden;
  226. extern time_t _time_mktime_tzi(struct tm *timeptr, int store_on_success,
  227. rule_struct *tzi) attribute_hidden;
  228. /**********************************************************************/
  229. #ifdef L_asctime
  230. static char __time_str[26];
  231. char *asctime(const struct tm *ptm)
  232. {
  233. return asctime_r(ptm, __time_str);
  234. }
  235. libc_hidden_def(asctime)
  236. #endif
  237. /**********************************************************************/
  238. #ifdef L_asctime_r
  239. /* Strictly speaking, this implementation isn't correct. ANSI/ISO specifies
  240. * that the implementation of asctime() be equivalent to
  241. *
  242. * char *asctime(const struct tm *timeptr)
  243. * {
  244. * static char wday_name[7][3] = {
  245. * "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
  246. * };
  247. * static char mon_name[12][3] = {
  248. * "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  249. * "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  250. * };
  251. * static char result[26];
  252. *
  253. * sprintf(result, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
  254. * wday_name[timeptr->tm_wday],
  255. * mon_name[timeptr->tm_mon],
  256. * timeptr->tm_mday, timeptr->tm_hour,
  257. * timeptr->tm_min, timeptr->tm_sec,
  258. * 1900 + timeptr->tm_year);
  259. * return result;
  260. * }
  261. *
  262. * but the above is either inherently unsafe, or carries with it the implicit
  263. * assumption that all fields of timeptr fall within their usual ranges, and
  264. * that the tm_year value falls in the range [-2899,8099] to avoid overflowing
  265. * the static buffer.
  266. *
  267. * If we take the implicit assumption as given, then the implementation below
  268. * is still incorrect for tm_year values < -900, as there will be either
  269. * 0-padding and/or a missing negative sign for the year conversion . But given
  270. * the ususal use of asctime(), I think it isn't unreasonable to restrict correct
  271. * operation to the domain of years between 1000 and 9999.
  272. */
  273. /* This is generally a good thing, but if you're _sure_ any data passed will be
  274. * in range, you can #undef this. */
  275. #define SAFE_ASCTIME_R 1
  276. static const unsigned char at_data[] = {
  277. 'S', 'u', 'n', 'M', 'o', 'n', 'T', 'u', 'e', 'W', 'e', 'd',
  278. 'T', 'h', 'u', 'F', 'r', 'i', 'S', 'a', 't',
  279. 'J', 'a', 'n', 'F', 'e', 'b', 'M', 'a', 'r', 'A', 'p', 'r',
  280. 'M', 'a', 'y', 'J', 'u', 'n', 'J', 'u', 'l', 'A', 'u', 'g',
  281. 'S', 'e', 'p', 'O', 'c', 't', 'N', 'o', 'v', 'D', 'e', 'c',
  282. #ifdef SAFE_ASCTIME_R
  283. '?', '?', '?',
  284. #endif
  285. ' ', '?', '?', '?',
  286. ' ', '0',
  287. offsetof(struct tm, tm_mday),
  288. ' ', '0',
  289. offsetof(struct tm, tm_hour),
  290. ':', '0',
  291. offsetof(struct tm, tm_min),
  292. ':', '0',
  293. offsetof(struct tm, tm_sec),
  294. ' ', '?', '?', '?', '?', '\n', 0
  295. };
  296. char *asctime_r(register const struct tm *__restrict ptm,
  297. register char *__restrict buffer)
  298. {
  299. int tmp;
  300. assert(ptm);
  301. assert(buffer);
  302. #ifdef SAFE_ASCTIME_R
  303. memcpy(buffer, at_data + 3*(7 + 12), sizeof(at_data) - 3*(7 + 12));
  304. if (((unsigned int)(ptm->tm_wday)) <= 6) {
  305. memcpy(buffer, at_data + 3 * ptm->tm_wday, 3);
  306. }
  307. if (((unsigned int)(ptm->tm_mon)) <= 11) {
  308. memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3);
  309. }
  310. #else
  311. assert(((unsigned int)(ptm->tm_wday)) <= 6);
  312. assert(((unsigned int)(ptm->tm_mon)) <= 11);
  313. memcpy(buffer, at_data + 3*(7 + 12) - 3, sizeof(at_data) + 3 - 3*(7 + 12));
  314. memcpy(buffer, at_data + 3 * ptm->tm_wday, 3);
  315. memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3);
  316. #endif
  317. #ifdef SAFE_ASCTIME_R
  318. buffer += 19;
  319. tmp = ptm->tm_year + 1900;
  320. if (((unsigned int) tmp) < 10000) {
  321. buffer += 4;
  322. do {
  323. *buffer = '0' + (tmp % 10);
  324. tmp /= 10;
  325. } while (*--buffer == '?');
  326. }
  327. #else /* SAFE_ASCTIME_R */
  328. buffer += 23;
  329. tmp = ptm->tm_year + 1900;
  330. assert( ((unsigned int) tmp) < 10000 );
  331. do {
  332. *buffer = '0' + (tmp % 10);
  333. tmp /= 10;
  334. } while (*--buffer == '?');
  335. #endif /* SAFE_ASCTIME_R */
  336. do {
  337. --buffer;
  338. tmp = *((int *)(((const char *) ptm) + (int) *buffer));
  339. #ifdef SAFE_ASCTIME_R
  340. if (((unsigned int) tmp) >= 100) { /* Just check 2 digit non-neg. */
  341. buffer[-1] = *buffer = '?';
  342. } else
  343. #else /* SAFE_ASCTIME_R */
  344. assert(((unsigned int) tmp) < 100); /* Just check 2 digit non-neg. */
  345. #endif /* SAFE_ASCTIME_R */
  346. {
  347. *buffer = '0' + (tmp % 10);
  348. #ifdef __BCC__
  349. buffer[-1] = '0' + (tmp/10);
  350. #else /* __BCC__ */
  351. buffer[-1] += (tmp/10);
  352. #endif /* __BCC__ */
  353. }
  354. } while ((buffer -= 2)[-2] == '0');
  355. if (*++buffer == '0') { /* Space-pad day of month. */
  356. *buffer = ' ';
  357. }
  358. return buffer - 8;
  359. }
  360. libc_hidden_def(asctime_r)
  361. #endif
  362. /**********************************************************************/
  363. #ifdef L_clock
  364. #include <sys/times.h>
  365. libc_hidden_proto(times)
  366. #ifndef __BCC__
  367. #if CLOCKS_PER_SEC != 1000000L
  368. #error unexpected value for CLOCKS_PER_SEC!
  369. #endif
  370. #endif
  371. #ifdef __UCLIBC_CLK_TCK_CONST
  372. # if __UCLIBC_CLK_TCK_CONST > CLOCKS_PER_SEC
  373. # error __UCLIBC_CLK_TCK_CONST > CLOCKS_PER_SEC!
  374. # elif __UCLIBC_CLK_TCK_CONST < 1
  375. # error __UCLIBC_CLK_TCK_CONST < 1!
  376. # endif
  377. #endif
  378. /* Note: SUSv3 notes
  379. *
  380. * On XSI-conformant systems, CLOCKS_PER_SEC is defined to be one million.
  381. *
  382. * The value returned by clock() may wrap around on some implementations.
  383. * For example, on a machine with 32-bit values for clock_t, it wraps
  384. * after 2147 seconds.
  385. *
  386. * This implies that we should bitwise and with LONG_MAX.
  387. */
  388. clock_t clock(void)
  389. {
  390. struct tms xtms;
  391. unsigned long t;
  392. times(&xtms);
  393. t = ((unsigned long) xtms.tms_utime) + xtms.tms_stime;
  394. #ifndef __UCLIBC_CLK_TCK_CONST
  395. # error __UCLIBC_CLK_TCK_CONST not defined!
  396. #elif ((CLOCKS_PER_SEC % __UCLIBC_CLK_TCK_CONST) == 0)
  397. /* CLOCKS_PER_SEC == k * __UCLIBC_CLK_TCK_CONST for some integer k >= 1. */
  398. return ((t * (CLOCKS_PER_SEC/__UCLIBC_CLK_TCK_CONST)) & LONG_MAX);
  399. #else
  400. /* Unlike the previous case, the scaling factor is not an integer.
  401. * So when tms_utime, tms_stime, or their sum wraps, some of the
  402. * "visible" bits in the return value are affected. Nothing we
  403. * can really do about this though other than handle tms_utime and
  404. * tms_stime seperately and then sum. But since that doesn't really
  405. * buy us much, we don't bother. */
  406. return ((((t / __UCLIBC_CLK_TCK_CONST) * CLOCKS_PER_SEC)
  407. + ((((t % __UCLIBC_CLK_TCK_CONST) * CLOCKS_PER_SEC)
  408. / __UCLIBC_CLK_TCK_CONST))
  409. ) & LONG_MAX);
  410. #endif
  411. }
  412. #endif
  413. /**********************************************************************/
  414. #ifdef L_ctime
  415. char *ctime(const time_t *clock)
  416. {
  417. /* ANSI/ISO/SUSv3 say that ctime is equivalent to the following. */
  418. return asctime(localtime(clock));
  419. }
  420. libc_hidden_def(ctime)
  421. #endif
  422. /**********************************************************************/
  423. #ifdef L_ctime_r
  424. char *ctime_r(const time_t *clock, char *buf)
  425. {
  426. struct tm xtm;
  427. return asctime_r(localtime_r(clock, &xtm), buf);
  428. }
  429. #endif
  430. /**********************************************************************/
  431. #ifdef L_difftime
  432. #include <float.h>
  433. #if FLT_RADIX != 2
  434. #error difftime implementation assumptions violated for you arch!
  435. #endif
  436. double difftime(time_t time1, time_t time0)
  437. {
  438. #if (LONG_MAX >> DBL_MANT_DIG) == 0
  439. /* time_t fits in the mantissa of a double. */
  440. return ((double) time1) - time0;
  441. #elif ((LONG_MAX >> DBL_MANT_DIG) >> DBL_MANT_DIG) == 0
  442. /* time_t can overflow the mantissa of a double. */
  443. time_t t1, t0, d;
  444. d = ((time_t) 1) << DBL_MANT_DIG;
  445. t1 = time1 / d;
  446. time1 -= (t1 * d);
  447. t0 = time0 / d;
  448. time0 -= (t0*d);
  449. /* Since FLT_RADIX==2 and d is a power of 2, the only possible
  450. * rounding error in the expression below would occur from the
  451. * addition. */
  452. return (((double) t1) - t0) * d + (((double) time1) - time0);
  453. #else
  454. #error difftime needs special implementation on your arch.
  455. #endif
  456. }
  457. #endif
  458. /**********************************************************************/
  459. #ifdef L_gmtime
  460. struct tm *gmtime(const time_t *timer)
  461. {
  462. register struct tm *ptm = &__time_tm;
  463. _time_t2tm(timer, 0, ptm); /* Can return NULL... */
  464. return ptm;
  465. }
  466. #endif
  467. /**********************************************************************/
  468. #ifdef L_gmtime_r
  469. struct tm *gmtime_r(const time_t *__restrict timer,
  470. struct tm *__restrict result)
  471. {
  472. return _time_t2tm(timer, 0, result);
  473. }
  474. #endif
  475. /**********************************************************************/
  476. #ifdef L_localtime
  477. struct tm *localtime(const time_t *timer)
  478. {
  479. register struct tm *ptm = &__time_tm;
  480. /* In this implementation, tzset() is called by localtime_r(). */
  481. localtime_r(timer, ptm); /* Can return NULL... */
  482. return ptm;
  483. }
  484. libc_hidden_def(localtime)
  485. #endif
  486. /**********************************************************************/
  487. #ifdef L_localtime_r
  488. struct tm *localtime_r(register const time_t *__restrict timer,
  489. register struct tm *__restrict result)
  490. {
  491. TZLOCK;
  492. tzset();
  493. __time_localtime_tzi(timer, result, _time_tzinfo);
  494. TZUNLOCK;
  495. return result;
  496. }
  497. libc_hidden_def(localtime_r)
  498. #endif
  499. /**********************************************************************/
  500. #ifdef L__time_localtime_tzi
  501. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  502. struct ll_tzname_item;
  503. typedef struct ll_tzname_item {
  504. struct ll_tzname_item *next;
  505. char tzname[TZNAME_MAX+1];
  506. } ll_tzname_item_t;
  507. static ll_tzname_item_t ll_tzname[] = {
  508. { ll_tzname + 1, "UTC" }, /* Always 1st. */
  509. { NULL, "???" } /* Always 2nd. (invalid or out-of-memory) */
  510. };
  511. static const char *lookup_tzname(const char *key)
  512. {
  513. ll_tzname_item_t *p;
  514. for (p=ll_tzname ; p ; p=p->next) {
  515. if (!strcmp(p->tzname, key)) {
  516. return p->tzname;
  517. }
  518. }
  519. /* Hmm... a new name. */
  520. if (strnlen(key, TZNAME_MAX+1) < TZNAME_MAX+1) { /* Verify legal length */
  521. if ((p = malloc(sizeof(ll_tzname_item_t))) != NULL) {
  522. /* Insert as 3rd item in the list. */
  523. p->next = ll_tzname[1].next;
  524. ll_tzname[1].next = p;
  525. strcpy(p->tzname, key);
  526. return p->tzname;
  527. }
  528. }
  529. /* Either invalid or couldn't alloc. */
  530. return ll_tzname[1].tzname;
  531. }
  532. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  533. static const unsigned char day_cor[] = { /* non-leap */
  534. 31, 31, 34, 34, 35, 35, 36, 36, 36, 37, 37, 38, 38
  535. /* 0, 0, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7 */
  536. /* 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 */
  537. };
  538. /* Note: timezone locking is done by localtime_r. */
  539. static int tm_isdst(register const struct tm *__restrict ptm,
  540. register rule_struct *r)
  541. {
  542. long sec;
  543. int i, isdst, isleap, day, day0, monlen, mday;
  544. int oday; /* Note: oday can be uninitialized. */
  545. isdst = 0;
  546. if (r[1].tzname[0] != 0) {
  547. /* First, get the current seconds offset from the start of the year.
  548. * Fields of ptm are assumed to be in their normal ranges. */
  549. sec = ptm->tm_sec
  550. + 60 * (ptm->tm_min
  551. + 60 * (long)(ptm->tm_hour
  552. + 24 * ptm->tm_yday));
  553. /* Do some prep work. */
  554. i = (ptm->tm_year % 400) + 1900; /* Make sure we don't overflow. */
  555. isleap = __isleap(i);
  556. --i;
  557. day0 = (1
  558. + i /* Normal years increment 1 wday. */
  559. + (i/4)
  560. - (i/100)
  561. + (i/400) ) % 7;
  562. i = 0;
  563. do {
  564. day = r->day; /* Common for 'J' and # case. */
  565. if (r->rule_type == 'J') {
  566. if (!isleap || (day < (31+29))) {
  567. --day;
  568. }
  569. } else if (r->rule_type == 'M') {
  570. /* Find 0-based day number for 1st of the month. */
  571. day = 31*r->month - day_cor[r->month -1];
  572. if (isleap && (day >= 59)) {
  573. ++day;
  574. }
  575. monlen = 31 + day_cor[r->month -1] - day_cor[r->month];
  576. if (isleap && (r->month > 1)) {
  577. ++monlen;
  578. }
  579. /* Wweekday (0 is Sunday) of 1st of the month
  580. * is (day0 + day) % 7. */
  581. if ((mday = r->day - ((day0 + day) % 7)) >= 0) {
  582. mday -= 7; /* Back up into prev month since r->week>0. */
  583. }
  584. if ((mday += 7 * r->week) >= monlen) {
  585. mday -= 7;
  586. }
  587. /* So, 0-based day number is... */
  588. day += mday;
  589. }
  590. if (i != 0) {
  591. /* Adjust sec since dst->std change time is in dst. */
  592. sec += (r[-1].gmt_offset - r->gmt_offset);
  593. if (oday > day) {
  594. ++isdst; /* Year starts in dst. */
  595. }
  596. }
  597. oday = day;
  598. /* Now convert day to seconds and add offset and compare. */
  599. if (sec >= (day * 86400L) + r->dst_offset) {
  600. ++isdst;
  601. }
  602. ++r;
  603. } while (++i < 2);
  604. }
  605. return (isdst & 1);
  606. }
  607. struct tm attribute_hidden *__time_localtime_tzi(register const time_t *__restrict timer,
  608. register struct tm *__restrict result,
  609. rule_struct *tzi)
  610. {
  611. time_t x[1];
  612. long offset;
  613. int days, dst;
  614. dst = 0;
  615. do {
  616. days = -7;
  617. offset = 604800L - tzi[dst].gmt_offset;
  618. if (*timer > (LONG_MAX - 604800L)) {
  619. days = -days;
  620. offset = -offset;
  621. }
  622. *x = *timer + offset;
  623. _time_t2tm(x, days, result);
  624. result->tm_isdst = dst;
  625. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  626. result->tm_gmtoff = - tzi[dst].gmt_offset;
  627. result->tm_zone = lookup_tzname(tzi[dst].tzname);
  628. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  629. } while ((++dst < 2)
  630. && ((result->tm_isdst = tm_isdst(result, tzi)) != 0));
  631. return result;
  632. }
  633. #endif
  634. /**********************************************************************/
  635. #ifdef L_mktime
  636. time_t mktime(struct tm *timeptr)
  637. {
  638. return _time_mktime(timeptr, 1);
  639. }
  640. /* Another name for `mktime'. */
  641. /* time_t timelocal(struct tm *tp) */
  642. strong_alias(mktime,timelocal)
  643. #endif
  644. /**********************************************************************/
  645. #ifdef L_timegm
  646. /* Like `mktime' but timeptr represents Universal Time, not local time. */
  647. time_t timegm(struct tm *timeptr)
  648. {
  649. rule_struct gmt_tzinfo[2];
  650. memset(gmt_tzinfo, 0, sizeof(gmt_tzinfo));
  651. strcpy(gmt_tzinfo[0].tzname, "GMT"); /* Match glibc behavior here. */
  652. return _time_mktime_tzi(timeptr, 1, gmt_tzinfo);
  653. }
  654. #endif
  655. /**********************************************************************/
  656. #if defined(L_strftime) || defined(L_strftime_l)
  657. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  658. libc_hidden_proto(strftime)
  659. libc_hidden_proto(strftime_l)
  660. size_t strftime(char *__restrict s, size_t maxsize,
  661. const char *__restrict format,
  662. const struct tm *__restrict timeptr)
  663. {
  664. return strftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE);
  665. }
  666. libc_hidden_def(strftime)
  667. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  668. #define NO_E_MOD 0x80
  669. #define NO_O_MOD 0x40
  670. #define ILLEGAL_SPEC 0x3f
  671. #define INT_SPEC 0x00 /* must be 0x00!! */
  672. #define STRING_SPEC 0x10 /* must be 0x10!! */
  673. #define CALC_SPEC 0x20
  674. #define STACKED_SPEC 0x30
  675. #define MASK_SPEC 0x30
  676. /* Compatibility:
  677. *
  678. * No alternate digit (%O?) handling. Always uses 0-9.
  679. * Alternate locale format (%E?) handling is broken for nontrivial ERAs.
  680. * glibc's %P is currently faked by %p. This means it doesn't do lower case.
  681. * glibc's %k, %l, and %s are handled.
  682. * glibc apparently allows (and ignores) extraneous 'E' and 'O' modifiers,
  683. * while they are flagged as illegal conversions here.
  684. */
  685. /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */
  686. static const unsigned char spec[] = {
  687. /* A */ 0x03 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  688. /* B */ 0x04 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  689. /* C */ 0x0a | INT_SPEC | NO_O_MOD,
  690. /* D */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  691. /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  692. /* F */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  693. /* G */ 0x03 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  694. /* H */ 0x0b | INT_SPEC | NO_E_MOD,
  695. /* I */ 0x0c | INT_SPEC | NO_E_MOD,
  696. /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  697. /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  698. /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  699. /* M */ 0x0d | INT_SPEC | NO_E_MOD,
  700. /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  701. /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  702. /* P */ 0x05 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc ; use %p */
  703. /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  704. /* R */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  705. /* S */ 0x0e | INT_SPEC | NO_E_MOD,
  706. /* T */ 0x05 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  707. /* U */ 0x04 | CALC_SPEC | NO_E_MOD,
  708. /* V */ 0x05 | CALC_SPEC | NO_E_MOD,
  709. /* W */ 0x06 | CALC_SPEC | NO_E_MOD,
  710. /* X */ 0x0a | STACKED_SPEC | NO_O_MOD,
  711. /* Y */ 0x0f | INT_SPEC | NO_O_MOD,
  712. /* Z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  713. '?', /* 26 */
  714. '?', /* 27 */
  715. '?', /* 28 */
  716. '?', /* 29 */
  717. 0, /* 30 */
  718. 0, /* 31 */
  719. /* a */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  720. /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  721. /* c */ 0x08 | STACKED_SPEC | NO_O_MOD,
  722. /* d */ 0x00 | INT_SPEC | NO_E_MOD,
  723. /* e */ 0x01 | INT_SPEC | NO_E_MOD,
  724. /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  725. /* g */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  726. /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* same as b */
  727. /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  728. /* j */ 0x08 | INT_SPEC | NO_E_MOD | NO_O_MOD,
  729. /* k */ 0x03 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  730. /* l */ 0x04 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  731. /* m */ 0x05 | INT_SPEC | NO_E_MOD,
  732. /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  733. /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  734. /* p */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  735. /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  736. /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  737. /* s */ 0x07 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  738. /* t */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  739. /* u */ 0x07 | INT_SPEC | NO_E_MOD,
  740. /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  741. /* w */ 0x02 | INT_SPEC | NO_E_MOD,
  742. /* x */ 0x09 | STACKED_SPEC | NO_O_MOD,
  743. /* y */ 0x09 | INT_SPEC,
  744. /* z */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD,
  745. /* WARNING!!! These are dependent on the layout of struct tm!!! */
  746. #define FIELD_MAX (26+6+26)
  747. 60 /* 61? */, 59, 23, 31, 11, 0 /* 9999 */, 6, 0 /* 365 */,
  748. #define TP_OFFSETS (FIELD_MAX+8)
  749. 3, /* d */
  750. 3, /* e */
  751. 6, /* w */
  752. 2, /* k */
  753. 2, /* l */
  754. 4, /* m */
  755. 0, /* CURRENTLY UNUSED */
  756. /* NOTE: u,j,y order must be preserved as 6,7,5 seq is used in the code! */
  757. #define CALC_OFFSETS (TP_OFFSETS + 7)
  758. 6, /* u */
  759. 7, /* j */
  760. 5, /* y */
  761. 5, /* C */
  762. 2, /* H */
  763. 2, /* I */
  764. 1, /* M */
  765. 0, /* S */
  766. 5, /* Y */
  767. 6, /* a */
  768. 4, /* b, h */
  769. 2, /* p */
  770. 6, /* A */
  771. 4, /* B */
  772. 2, /* P */
  773. #define TP_CODES (TP_OFFSETS + 16 + 6)
  774. 2 | 16, /* d */
  775. 2, /* e */
  776. 0 | 16, /* w */
  777. 2, /* k */
  778. 2 | 32 | 0, /* l */
  779. 2 | 16 | 1, /* m */
  780. 0, /* CURRENTLY UNUSED */
  781. 0 | 16 | 8 , /* u */
  782. 4 | 16 | 1, /* j */
  783. 2 | 128 | 32 | 16 , /* y */
  784. 2 | 128 | 64 | 32 | 16 , /* C */
  785. 2 | 16, /* H */
  786. 2 | 32 | 16 | 0, /* I */
  787. 2 | 16, /* M */
  788. 2 | 16, /* S */
  789. 6 | 16, /* Y */
  790. 2, /* a */
  791. 2, /* b, h */
  792. 2 | 64, /* p */
  793. 2, /* A */
  794. 2, /* B */
  795. 2 | 64, /* P */
  796. #define STRINGS_NL_ITEM_START (TP_CODES + 16 + 6)
  797. _NL_ITEM_INDEX(ABDAY_1), /* a */
  798. _NL_ITEM_INDEX(ABMON_1), /* b, h */
  799. _NL_ITEM_INDEX(AM_STR), /* p */
  800. _NL_ITEM_INDEX(DAY_1), /* A */
  801. _NL_ITEM_INDEX(MON_1), /* B */
  802. _NL_ITEM_INDEX(AM_STR), /* P -- wrong! need lower case */
  803. #define STACKED_STRINGS_START (STRINGS_NL_ITEM_START+6)
  804. 6, 7, 8, 16, 24, 29, /* 6 - offsets from offset-count to strings */
  805. '\n', 0, /* 2 */
  806. '\t', 0, /* 2 */
  807. '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */
  808. '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */
  809. '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/
  810. '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */
  811. #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 43)
  812. _NL_ITEM_INDEX(D_T_FMT), /* c */
  813. _NL_ITEM_INDEX(D_FMT), /* x */
  814. _NL_ITEM_INDEX(T_FMT), /* X */
  815. _NL_ITEM_INDEX(T_FMT_AMPM), /* r */
  816. #ifdef ENABLE_ERA_CODE
  817. _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */
  818. _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */
  819. _NL_ITEM_INDEX(ERA_T_FMT), /* EX */
  820. #endif
  821. };
  822. static int load_field(int k, const struct tm *__restrict timeptr)
  823. {
  824. int r;
  825. int r_max;
  826. r = ((int *) timeptr)[k];
  827. r_max = spec[FIELD_MAX + k];
  828. if (k == 7) {
  829. r_max = 365;
  830. } else if (k == 5) {
  831. r += 1900;
  832. r_max = 9999;
  833. }
  834. if ((((unsigned int) r) > r_max) || ((k == 3) && !r)) {
  835. r = -1;
  836. }
  837. return r;
  838. }
  839. #define MAX_PUSH 4
  840. #ifdef __UCLIBC_MJN3_ONLY__
  841. #warning TODO: Check multibyte format string validity.
  842. #endif
  843. libc_hidden_proto(__XL_NPP(strftime))
  844. size_t __XL_NPP(strftime)(char *__restrict s, size_t maxsize,
  845. const char *__restrict format,
  846. const struct tm *__restrict timeptr __LOCALE_PARAM )
  847. {
  848. long tzo;
  849. register const char *p;
  850. register const char *o;
  851. #ifndef __UCLIBC_HAS_TM_EXTENSIONS__
  852. const rule_struct *rsp;
  853. #endif
  854. const char *stack[MAX_PUSH];
  855. size_t count;
  856. size_t o_count;
  857. int field_val, i, j, lvl;
  858. int x[3]; /* wday, yday, year */
  859. int isofm, days;
  860. char buf[__UIM_BUFLEN_LONG];
  861. unsigned char mod;
  862. unsigned char code;
  863. tzset(); /* We'll, let's get this out of the way. */
  864. lvl = 0;
  865. p = format;
  866. count = maxsize;
  867. LOOP:
  868. if (!count) {
  869. return 0;
  870. }
  871. if (!*p) {
  872. if (lvl == 0) {
  873. *s = 0; /* nul-terminate */
  874. return maxsize - count;
  875. }
  876. p = stack[--lvl];
  877. goto LOOP;
  878. }
  879. o_count = 1;
  880. if ((*(o = p) == '%') && (*++p != '%')) {
  881. o_count = 2;
  882. mod = ILLEGAL_SPEC;
  883. if ((*p == 'O') || (*p == 'E')) { /* modifier */
  884. mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD);
  885. ++o_count;
  886. ++p;
  887. }
  888. if ((((unsigned char)(((*p) | 0x20) - 'a')) >= 26)
  889. || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC)
  890. ) {
  891. if (!*p) {
  892. --p;
  893. --o_count;
  894. }
  895. goto OUTPUT;
  896. }
  897. code &= ILLEGAL_SPEC; /* modifiers are preserved in mod var. */
  898. if ((code & MASK_SPEC) == STACKED_SPEC) {
  899. if (lvl == MAX_PUSH) {
  900. goto OUTPUT; /* Stack full so treat as illegal spec. */
  901. }
  902. stack[lvl++] = ++p;
  903. if ((code &= 0xf) < 8) {
  904. p = ((const char *) spec) + STACKED_STRINGS_START + code;
  905. p += *((unsigned char *)p);
  906. goto LOOP;
  907. }
  908. p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START
  909. + (code & 7);
  910. #ifdef ENABLE_ERA_CODE
  911. if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
  912. && (*(o = __XL_NPP(nl_langinfo)(_NL_ITEM(LC_TIME,
  913. (int)(((unsigned char *)p)[4]))
  914. __LOCALE_ARG
  915. )))
  916. ) {
  917. p = o;
  918. goto LOOP;
  919. }
  920. #endif
  921. p = __XL_NPP(nl_langinfo)(_NL_ITEM(LC_TIME,
  922. (int)(*((unsigned char *)p)))
  923. __LOCALE_ARG
  924. );
  925. goto LOOP;
  926. }
  927. o = spec + 26; /* set to "????" */
  928. if ((code & MASK_SPEC) == CALC_SPEC) {
  929. if (*p == 's') {
  930. time_t t;
  931. /* Use a cast to silence the warning since *timeptr won't
  932. * be changed. */
  933. if ((t = _time_mktime((struct tm *) timeptr, 0))
  934. == ((time_t) -1)
  935. ) {
  936. o_count = 1;
  937. goto OUTPUT;
  938. }
  939. #ifdef TIME_T_IS_UNSIGNED
  940. o = _uintmaxtostr(buf + sizeof(buf) - 1,
  941. (uintmax_t) t,
  942. 10, __UIM_DECIMAL);
  943. #else
  944. o = _uintmaxtostr(buf + sizeof(buf) - 1,
  945. (uintmax_t) t,
  946. -10, __UIM_DECIMAL);
  947. #endif
  948. o_count = sizeof(buf);
  949. goto OUTPUT;
  950. } else if (((*p) | 0x20) == 'z') { /* 'z' or 'Z' */
  951. if (timeptr->tm_isdst < 0) {
  952. /* SUSv3 specifies this behavior for 'z', but we'll also
  953. * treat it as "no timezone info" for 'Z' too. */
  954. o_count = 0;
  955. goto OUTPUT;
  956. }
  957. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  958. #define RSP_TZUNLOCK ((void) 0)
  959. #define RSP_TZNAME timeptr->tm_zone
  960. #define RSP_GMT_OFFSET (-timeptr->tm_gmtoff)
  961. #else
  962. #define RSP_TZUNLOCK TZUNLOCK
  963. #define RSP_TZNAME rsp->tzname
  964. #define RSP_GMT_OFFSET rsp->gmt_offset
  965. TZLOCK;
  966. rsp = _time_tzinfo;
  967. if (timeptr->tm_isdst > 0) {
  968. ++rsp;
  969. }
  970. #endif
  971. if (*p == 'Z') {
  972. o = RSP_TZNAME;
  973. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  974. /* Sigh... blasted glibc extensions. Of course we can't
  975. * count on the pointer being valid. Best we can do is
  976. * handle NULL, which looks to be all that glibc does.
  977. * At least that catches the memset() with 0 case.
  978. * NOTE: We handle this case differently than glibc!
  979. * It uses system timezone name (based on tm_isdst) in this
  980. * case... although it always seems to use the embedded
  981. * tm_gmtoff value. What we'll do instead is treat the
  982. * timezone name as unknown/invalid and return "???". */
  983. if (!o) {
  984. o = "???";
  985. }
  986. #endif
  987. assert(o != NULL);
  988. #if 0
  989. if (!o) { /* PARANOIA */
  990. o = spec+30; /* empty string */
  991. }
  992. #endif
  993. o_count = SIZE_MAX;
  994. RSP_TZUNLOCK;
  995. goto OUTPUT;
  996. } else { /* z */
  997. *s = '+';
  998. if ((tzo = -RSP_GMT_OFFSET) < 0) {
  999. tzo = -tzo;
  1000. *s = '-';
  1001. }
  1002. RSP_TZUNLOCK;
  1003. ++s;
  1004. --count;
  1005. i = tzo / 60;
  1006. field_val = ((i / 60) * 100) + (i % 60);
  1007. i = 16 + 6; /* 0-fill, width = 4 */
  1008. }
  1009. } else {
  1010. /* TODO: don't need year for U, W */
  1011. for (i=0 ; i < 3 ; i++) {
  1012. if ((x[i] = load_field(spec[CALC_OFFSETS+i],timeptr)) < 0) {
  1013. goto OUTPUT;
  1014. }
  1015. }
  1016. i = 16 + 2; /* 0-fill, width = 2 */
  1017. if ((*p == 'U') || (*p == 'W')) {
  1018. field_val = ((x[1] - x[0]) + 7);
  1019. if (*p == 'W') {
  1020. ++field_val;
  1021. }
  1022. field_val /= 7;
  1023. if ((*p == 'W') && !x[0]) {
  1024. --field_val;
  1025. }
  1026. } else { /* ((*p == 'g') || (*p == 'G') || (*p == 'V')) */
  1027. ISO_LOOP:
  1028. isofm = (((x[1] - x[0]) + 11) % 7) - 3; /* [-3,3] */
  1029. if (x[1] < isofm) { /* belongs to previous year */
  1030. --x[2];
  1031. x[1] += 365 + __isleap(x[2]);
  1032. goto ISO_LOOP;
  1033. }
  1034. field_val = ((x[1] - isofm) / 7) + 1; /* week # */
  1035. days = 365 + __isleap(x[2]);
  1036. isofm = ((isofm + 7*53 + 3 - days)) %7 + days - 3; /* next year */
  1037. if (x[1] >= isofm) { /* next year */
  1038. x[1] -= days;
  1039. ++x[2];
  1040. goto ISO_LOOP;
  1041. }
  1042. if (*p != 'V') { /* need year */
  1043. field_val = x[2]; /* TODO: what if x[2] now 10000 ?? */
  1044. if (*p == 'g') {
  1045. field_val %= 100;
  1046. } else {
  1047. i = 16 + 6; /* 0-fill, width = 4 */
  1048. }
  1049. }
  1050. }
  1051. }
  1052. } else {
  1053. i = TP_OFFSETS + (code & 0x1f);
  1054. if ((field_val = load_field(spec[i],timeptr)) < 0) {
  1055. goto OUTPUT;
  1056. }
  1057. i = spec[i+(TP_CODES - TP_OFFSETS)];
  1058. j = (i & 128) ? 100: 12;
  1059. if (i & 64) {
  1060. field_val /= j;;
  1061. }
  1062. if (i & 32) {
  1063. field_val %= j;
  1064. if (((i&128) + field_val) == 0) { /* mod 12? == 0 */
  1065. field_val = j; /* set to 12 */
  1066. }
  1067. }
  1068. field_val += (i & 1);
  1069. if ((i & 8) && !field_val) {
  1070. field_val += 7;
  1071. }
  1072. }
  1073. if ((code & MASK_SPEC) == STRING_SPEC) {
  1074. o_count = SIZE_MAX;
  1075. field_val += spec[STRINGS_NL_ITEM_START + (code & 0xf)];
  1076. o = __XL_NPP(nl_langinfo)(_NL_ITEM(LC_TIME, field_val) __LOCALE_ARG );
  1077. } else {
  1078. o_count = ((i >> 1) & 3) + 1;
  1079. o = buf + o_count;
  1080. do {
  1081. *(char *)(--o) = '0' + (field_val % 10);
  1082. field_val /= 10;
  1083. } while (o > buf);
  1084. if (*buf == '0') {
  1085. *buf = ' ' + (i & 16);
  1086. }
  1087. }
  1088. }
  1089. OUTPUT:
  1090. ++p;
  1091. while (o_count && count && *o) {
  1092. *s++ = *o++;
  1093. --o_count;
  1094. --count;
  1095. }
  1096. goto LOOP;
  1097. }
  1098. libc_hidden_def(__XL_NPP(strftime))
  1099. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1100. #endif
  1101. /**********************************************************************/
  1102. #if defined(L_strptime) || defined(L_strptime_l)
  1103. #define ISDIGIT(C) __isdigit_char((C))
  1104. #ifdef __UCLIBC_DO_XLOCALE
  1105. #define ISSPACE(C) isspace_l((C), locale_arg)
  1106. #else
  1107. #define ISSPACE(C) isspace((C))
  1108. #endif
  1109. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  1110. libc_hidden_proto(strptime)
  1111. libc_hidden_proto(strptime_l)
  1112. char *strptime(const char *__restrict buf, const char *__restrict format,
  1113. struct tm *__restrict tm)
  1114. {
  1115. return strptime_l(buf, format, tm, __UCLIBC_CURLOCALE);
  1116. }
  1117. libc_hidden_def(strptime)
  1118. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1119. /* TODO:
  1120. * 1) %l and %k are space-padded, so "%l" by itself fails while " %l" succeeds.
  1121. * Both work for glibc. So, should we always strip spaces?
  1122. * 2) %Z
  1123. */
  1124. /* Notes:
  1125. * There are several differences between this strptime and glibc's strptime.
  1126. * 1) glibc strips leading space before numeric conversions.
  1127. * 2) glibc will read fields without whitespace in between. SUSv3 states
  1128. * that you must have whitespace between conversion operators. Besides,
  1129. * how do you know how long a number should be if there are leading 0s?
  1130. * 3) glibc attempts to compute some the struct tm fields based on the
  1131. * data retrieved; tm_wday in particular. I don't as I consider it
  1132. * another glibc attempt at mind-reading...
  1133. */
  1134. #define NO_E_MOD 0x80
  1135. #define NO_O_MOD 0x40
  1136. #define ILLEGAL_SPEC 0x3f
  1137. #define INT_SPEC 0x00 /* must be 0x00!! */
  1138. #define STRING_SPEC 0x10 /* must be 0x10!! */
  1139. #define CALC_SPEC 0x20
  1140. #define STACKED_SPEC 0x30
  1141. #define MASK_SPEC 0x30
  1142. /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */
  1143. static const unsigned char spec[] = {
  1144. /* A */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1145. /* B */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1146. /* C */ 0x08 | INT_SPEC | NO_O_MOD,
  1147. /* D */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1148. /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1149. /* F */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1150. /* G */ 0x0f | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1151. /* H */ 0x06 | INT_SPEC | NO_E_MOD,
  1152. /* I */ 0x07 | INT_SPEC | NO_E_MOD,
  1153. /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1154. /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1155. /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1156. /* M */ 0x04 | INT_SPEC | NO_E_MOD,
  1157. /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1158. /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1159. /* P */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1160. /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1161. /* R */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1162. /* S */ 0x05 | INT_SPEC | NO_E_MOD,
  1163. /* T */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1164. /* U */ 0x0c | INT_SPEC | NO_E_MOD,
  1165. /* V */ 0x0d | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1166. /* W */ 0x0c | INT_SPEC | NO_E_MOD,
  1167. /* X */ 0x0a | STACKED_SPEC | NO_O_MOD,
  1168. /* Y */ 0x0a | INT_SPEC | NO_O_MOD,
  1169. /* Z */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1170. /* WARNING! This assumes orderings:
  1171. * AM,PM
  1172. * ABDAY_1-ABDAY-7,DAY_1-DAY_7
  1173. * ABMON_1-ABMON_12,MON_1-MON12
  1174. * Also, there are exactly 6 bytes between 'Z' and 'a'.
  1175. */
  1176. #define STRINGS_NL_ITEM_START (26)
  1177. _NL_ITEM_INDEX(AM_STR), /* p (P) */
  1178. _NL_ITEM_INDEX(ABMON_1), /* B, b */
  1179. _NL_ITEM_INDEX(ABDAY_1), /* A, a */
  1180. 2,
  1181. 24,
  1182. 14,
  1183. /* a */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1184. /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1185. /* c */ 0x08 | STACKED_SPEC | NO_O_MOD,
  1186. /* d */ 0x00 | INT_SPEC | NO_E_MOD,
  1187. /* e */ 0x00 | INT_SPEC | NO_E_MOD,
  1188. /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1189. /* g */ 0x0e | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1190. /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1191. /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1192. /* j */ 0x01 | INT_SPEC | NO_E_MOD | NO_O_MOD,
  1193. /* k */ 0x06 | INT_SPEC | NO_E_MOD, /* glibc */
  1194. /* l */ 0x07 | INT_SPEC | NO_E_MOD, /* glibc */
  1195. /* m */ 0x02 | INT_SPEC | NO_E_MOD,
  1196. /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1197. /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1198. /* p */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD,
  1199. /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1200. /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1201. /* s */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1202. /* t */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD,
  1203. /* u */ 0x0b | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1204. /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD,
  1205. /* w */ 0x03 | INT_SPEC | NO_E_MOD,
  1206. /* x */ 0x09 | STACKED_SPEC | NO_O_MOD,
  1207. /* y */ 0x09 | INT_SPEC,
  1208. /* z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */
  1209. #define INT_FIELD_START (26+6+26)
  1210. /* (field #) << 3 + lower bound (0|1) + correction 0:none, 2:-1, 4:-1900
  1211. * followed by upper bound prior to correction with 1=>366 and 2=>9999. */
  1212. /* d, e */ (3 << 3) + 1 + 0, 31,
  1213. /* j */ (7 << 3) + 1 + 2, /* 366 */ 1,
  1214. /* m */ (4 << 3) + 1 + 2, 12,
  1215. /* w */ (6 << 3) + 0 + 0, 6,
  1216. /* M */ (1 << 3) + 0 + 0, 59,
  1217. /* S */ 0 + 0 + 0, 60,
  1218. /* H (k) */ (2 << 3) + 0 + 0, 23,
  1219. /* I (l) */ (9 << 3) + 1 + 0, 12, /* goes with 8 -- am/pm */
  1220. /* C */ (10<< 3) + 0 + 0, 99,
  1221. /* y */ (11<< 3) + 0 + 0, 99,
  1222. /* Y */ (5 << 3) + 0 + 4, /* 9999 */ 2,
  1223. /* u */ (6 << 3) + 1 + 0, 7,
  1224. /* The following are processed and range-checked, but ignored otherwise. */
  1225. /* U, W */ (12<< 3) + 0 + 0, 53,
  1226. /* V */ (12<< 3) + 1 + 0, 53,
  1227. /* g */ (12<< 3) + 0 + 0, 99,
  1228. /* G */ (12<< 3) + 0 /*+ 4*/, /* 9999 */ 2, /* Note: -1 or 10000? */
  1229. #define STACKED_STRINGS_START (INT_FIELD_START+32)
  1230. 5, 6, 14, 22, 27, /* 5 - offsets from offset-count to strings */
  1231. ' ', 0, /* 2 - %n or %t */
  1232. '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */
  1233. '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */
  1234. '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/
  1235. '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */
  1236. #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 40)
  1237. _NL_ITEM_INDEX(D_T_FMT), /* c */
  1238. _NL_ITEM_INDEX(D_FMT), /* x */
  1239. _NL_ITEM_INDEX(T_FMT), /* X */
  1240. _NL_ITEM_INDEX(T_FMT_AMPM), /* r */
  1241. #ifdef ENABLE_ERA_CODE
  1242. _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */
  1243. _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */
  1244. _NL_ITEM_INDEX(ERA_T_FMT), /* EX */
  1245. #endif
  1246. };
  1247. #define MAX_PUSH 4
  1248. libc_hidden_proto(__XL_NPP(strptime))
  1249. char *__XL_NPP(strptime)(const char *__restrict buf, const char *__restrict format,
  1250. struct tm *__restrict tm __LOCALE_PARAM)
  1251. {
  1252. register const char *p;
  1253. char *o;
  1254. const char *stack[MAX_PUSH];
  1255. int i, j, lvl;
  1256. int fields[13];
  1257. unsigned char mod;
  1258. unsigned char code;
  1259. i = 0;
  1260. do {
  1261. fields[i] = INT_MIN;
  1262. } while (++i < 13);
  1263. lvl = 0;
  1264. p = format;
  1265. LOOP:
  1266. if (!*p) {
  1267. if (lvl == 0) { /* Done. */
  1268. if (fields[6] == 7) { /* Cleanup for %u here since just once. */
  1269. fields[6] = 0; /* Don't use mod in case unset. */
  1270. }
  1271. i = 0;
  1272. do { /* Store the values into tm. */
  1273. if (fields[i] != INT_MIN) {
  1274. ((int *) tm)[i] = fields[i];
  1275. }
  1276. } while (++i < 8);
  1277. return (char *) buf; /* Success. */
  1278. }
  1279. p = stack[--lvl];
  1280. goto LOOP;
  1281. }
  1282. if ((*p == '%') && (*++p != '%')) {
  1283. mod = ILLEGAL_SPEC;
  1284. if ((*p == 'O') || (*p == 'E')) { /* Modifier? */
  1285. mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD);
  1286. ++p;
  1287. }
  1288. if (!*p
  1289. || (((unsigned char)(((*p) | 0x20) - 'a')) >= 26)
  1290. || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC)
  1291. ) {
  1292. return NULL; /* Illegal spec. */
  1293. }
  1294. if ((code & MASK_SPEC) == STACKED_SPEC) {
  1295. if (lvl == MAX_PUSH) {
  1296. return NULL; /* Stack full so treat as illegal spec. */
  1297. }
  1298. stack[lvl++] = ++p;
  1299. if ((code &= 0xf) < 8) {
  1300. p = ((const char *) spec) + STACKED_STRINGS_START + code;
  1301. p += *((unsigned char *)p);
  1302. goto LOOP;
  1303. }
  1304. p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START
  1305. + (code & 7);
  1306. #ifdef ENABLE_ERA_CODE
  1307. if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
  1308. && (*(o = __XL_NPP(nl_langinfo)(_NL_ITEM(LC_TIME,
  1309. (int)(((unsigned char *)p)[4]))
  1310. __LOCALE_ARG
  1311. )))
  1312. ) {
  1313. p = o;
  1314. goto LOOP;
  1315. }
  1316. #endif
  1317. p = __XL_NPP(nl_langinfo)(_NL_ITEM(LC_TIME,
  1318. (int)(*((unsigned char *)p)))
  1319. __LOCALE_ARG );
  1320. goto LOOP;
  1321. }
  1322. ++p;
  1323. if ((code & MASK_SPEC) == STRING_SPEC) {
  1324. code &= 0xf;
  1325. j = spec[STRINGS_NL_ITEM_START + 3 + code];
  1326. i = _NL_ITEM(LC_TIME, spec[STRINGS_NL_ITEM_START + code]);
  1327. /* Go backwards to check full names before abreviations. */
  1328. do {
  1329. --j;
  1330. o = __XL_NPP(nl_langinfo)(i+j __LOCALE_ARG);
  1331. if (!__XL_NPP(strncasecmp)(buf,o,strlen(o) __LOCALE_ARG) && *o) {
  1332. do { /* Found a match. */
  1333. ++buf;
  1334. } while (*++o);
  1335. if (!code) { /* am/pm */
  1336. fields[8] = j * 12;
  1337. if (fields[9] >= 0) { /* We have a previous %I or %l. */
  1338. fields[2] = fields[9] + fields[8];
  1339. }
  1340. } else { /* day (4) or month (6) */
  1341. fields[2 + (code << 1)]
  1342. = j % (spec[STRINGS_NL_ITEM_START + 3 + code] >> 1);
  1343. }
  1344. goto LOOP;
  1345. }
  1346. } while (j);
  1347. return NULL; /* Failed to match. */
  1348. }
  1349. if ((code & MASK_SPEC) == CALC_SPEC) {
  1350. if ((code &= 0xf) < 1) { /* s or z*/
  1351. time_t t;
  1352. o = (char *) buf;
  1353. i = errno;
  1354. __set_errno(0);
  1355. if (!ISSPACE(*buf)) { /* Signal an error if whitespace. */
  1356. #ifdef TIME_T_IS_UNSIGNED
  1357. t = __XL_NPP(strtoul)(buf, &o, 10 __LOCALE_ARG);
  1358. #else
  1359. t = __XL_NPP(strtol)(buf, &o, 10 __LOCALE_ARG);
  1360. #endif
  1361. }
  1362. if ((o == buf) || errno) { /* Not a number or overflow. */
  1363. return NULL;
  1364. }
  1365. __set_errno(i); /* Restore errno. */
  1366. buf = o;
  1367. if (!code) { /* s */
  1368. localtime_r(&t, tm); /* TODO: check for failure? */
  1369. i = 0;
  1370. do { /* Now copy values from tm to fields. */
  1371. fields[i] = ((int *) tm)[i];
  1372. } while (++i < 8);
  1373. }
  1374. }
  1375. /* TODO: glibc treats %Z as a nop. For now, do the same. */
  1376. goto LOOP;
  1377. }
  1378. assert((code & MASK_SPEC) == INT_SPEC);
  1379. {
  1380. register const unsigned char *x;
  1381. code &= 0xf;
  1382. x = spec + INT_FIELD_START + (code << 1);
  1383. if ((j = x[1]) < 3) { /* upper bound (inclusive) */
  1384. j = ((j==1) ? 366 : 9999);
  1385. }
  1386. i = -1;
  1387. while (ISDIGIT(*buf)) {
  1388. if (i < 0) {
  1389. i = 0;
  1390. }
  1391. if ((i = 10*i + (*buf - '0')) > j) { /* Overflow. */
  1392. return NULL;
  1393. }
  1394. ++buf;
  1395. }
  1396. if (i < (*x & 1)) { /* This catches no-digit case too. */
  1397. return NULL;
  1398. }
  1399. if (*x & 2) {
  1400. --i;
  1401. }
  1402. if (*x & 4) {
  1403. i -= 1900;
  1404. }
  1405. if (*x == (9 << 3) + 1 + 0) { /* %I or %l */
  1406. if (i == 12) {
  1407. i = 0;
  1408. }
  1409. if (fields[8] >= 0) { /* We have a previous %p or %P. */
  1410. fields[2] = i + fields[8];
  1411. }
  1412. }
  1413. fields[(*x) >> 3] = i;
  1414. if (((unsigned char)(*x - (10<< 3) + 0 + 0)) <= 8) { /* %C or %y */
  1415. if ((j = fields[10]) < 0) { /* No %C, so i must be %y data. */
  1416. if (i <= 68) { /* Map [0-68] to 2000+i */
  1417. i += 100;
  1418. }
  1419. } else { /* Have %C data, but what about %y? */
  1420. if ((i = fields[11]) < 0) { /* No %y data. */
  1421. i = 0; /* Treat %y val as 0 following glibc's example. */
  1422. }
  1423. i += 100*(j - 19);
  1424. }
  1425. fields[5] = i;
  1426. }
  1427. }
  1428. goto LOOP;
  1429. } else if (ISSPACE(*p)) {
  1430. ++p;
  1431. while (ISSPACE(*buf)) {
  1432. ++buf;
  1433. }
  1434. goto LOOP;
  1435. } else if (*buf++ == *p++) {
  1436. goto LOOP;
  1437. }
  1438. return NULL;
  1439. }
  1440. libc_hidden_def(__XL_NPP(strptime))
  1441. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  1442. #endif
  1443. /**********************************************************************/
  1444. #ifdef L_time
  1445. #ifndef __BCC__
  1446. #error The uClibc version of time is in sysdeps/linux/common.
  1447. #endif
  1448. time_t time(register time_t *tloc)
  1449. {
  1450. struct timeval tv;
  1451. register struct timeval *p = &tv;
  1452. gettimeofday(p, NULL); /* This should never fail... */
  1453. if (tloc) {
  1454. *tloc = p->tv_sec;
  1455. }
  1456. return p->tv_sec;
  1457. }
  1458. #endif
  1459. /**********************************************************************/
  1460. #ifdef L_tzset
  1461. static const char vals[] = {
  1462. 'T', 'Z', 0, /* 3 */
  1463. 'U', 'T', 'C', 0, /* 4 */
  1464. 25, 60, 60, 1, /* 4 */
  1465. '.', 1, /* M */
  1466. 5, '.', 1,
  1467. 6, 0, 0, /* Note: overloaded for non-M non-J case... */
  1468. 0, 1, 0, /* J */
  1469. ',', 'M', '4', '.', '1', '.', '0',
  1470. ',', 'M', '1', '0', '.', '5', '.', '0', 0
  1471. };
  1472. #define TZ vals
  1473. #define UTC (vals + 3)
  1474. #define RANGE (vals + 7)
  1475. #define RULE (vals + 11 - 1)
  1476. #define DEFAULT_RULES (vals + 22)
  1477. /* Initialize to UTC. */
  1478. libc_hidden_proto(daylight)
  1479. int daylight = 0;
  1480. libc_hidden_def(daylight)
  1481. libc_hidden_proto(timezone)
  1482. long timezone = 0;
  1483. libc_hidden_def(timezone)
  1484. libc_hidden_proto(tzname)
  1485. char *tzname[2] = { (char *) UTC, (char *) (UTC-1) };
  1486. libc_hidden_def(tzname)
  1487. #ifdef __UCLIBC_HAS_THREADS__
  1488. attribute_hidden pthread_mutex_t _time_tzlock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
  1489. #endif
  1490. rule_struct _time_tzinfo[2];
  1491. static const char *getoffset(register const char *e, long *pn)
  1492. {
  1493. register const char *s = RANGE-1;
  1494. long n;
  1495. int f;
  1496. n = 0;
  1497. f = -1;
  1498. do {
  1499. ++s;
  1500. if (__isdigit_char(*e)) {
  1501. f = *e++ - '0';
  1502. }
  1503. if (__isdigit_char(*e)) {
  1504. f = 10 * f + (*e++ - '0');
  1505. }
  1506. if (((unsigned int)f) >= *s) {
  1507. return NULL;
  1508. }
  1509. n = (*s) * n + f;
  1510. f = 0;
  1511. if (*e == ':') {
  1512. ++e;
  1513. --f;
  1514. }
  1515. } while (*s > 1);
  1516. *pn = n;
  1517. return e;
  1518. }
  1519. static const char *getnumber(register const char *e, int *pn)
  1520. {
  1521. #ifdef __BCC__
  1522. /* bcc can optimize the counter if it thinks it is a pointer... */
  1523. register const char *n = (const char *) 3;
  1524. int f;
  1525. f = 0;
  1526. while (n && __isdigit_char(*e)) {
  1527. f = 10 * f + (*e++ - '0');
  1528. --n;
  1529. }
  1530. *pn = f;
  1531. return (n == (const char *) 3) ? NULL : e;
  1532. #else /* __BCC__ */
  1533. int n, f;
  1534. n = 3;
  1535. f = 0;
  1536. while (n && __isdigit_char(*e)) {
  1537. f = 10 * f + (*e++ - '0');
  1538. --n;
  1539. }
  1540. *pn = f;
  1541. return (n == 3) ? NULL : e;
  1542. #endif /* __BCC__ */
  1543. }
  1544. #ifdef __UCLIBC_MJN3_ONLY__
  1545. #warning CONSIDER: Should we preserve errno from open/read/close errors re TZ file?
  1546. #endif
  1547. #ifdef __UCLIBC_HAS_TZ_FILE__
  1548. #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  1549. static int TZ_file_read; /* Let BSS initialization set this to 0. */
  1550. #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
  1551. static char *read_TZ_file(char *buf)
  1552. {
  1553. int fd;
  1554. ssize_t r;
  1555. size_t todo;
  1556. char *p = NULL;
  1557. if ((fd = open(__UCLIBC_TZ_FILE_PATH__, O_RDONLY)) >= 0) {
  1558. todo = TZ_BUFLEN;
  1559. p = buf;
  1560. do {
  1561. if ((r = read(fd, p, todo)) < 0) {
  1562. goto ERROR;
  1563. }
  1564. if (r == 0) {
  1565. break;
  1566. }
  1567. p += r;
  1568. todo -= r;
  1569. } while (todo);
  1570. if ((p > buf) && (p[-1] == '\n')) { /* Must end with newline. */
  1571. p[-1] = 0;
  1572. p = buf;
  1573. #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
  1574. ++TZ_file_read;
  1575. #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
  1576. } else {
  1577. ERROR:
  1578. p = NULL;
  1579. }
  1580. close(fd);
  1581. }
  1582. return p;
  1583. }
  1584. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1585. #ifndef __UCLIBC_HAS_CTYPE_TABLES__
  1586. libc_hidden_proto(isascii)
  1587. #endif
  1588. void tzset(void)
  1589. {
  1590. register const char *e;
  1591. register char *s;
  1592. long off;
  1593. short *p;
  1594. rule_struct new_rules[2];
  1595. int n, count, f;
  1596. char c;
  1597. #ifdef __UCLIBC_HAS_TZ_FILE__
  1598. char buf[TZ_BUFLEN];
  1599. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1600. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1601. static char oldval[TZ_BUFLEN]; /* BSS-zero'd. */
  1602. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1603. TZLOCK;
  1604. e = getenv(TZ); /* TZ env var always takes precedence. */
  1605. #if defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__)
  1606. /* Put this inside the lock to prevent the possiblity of two different
  1607. * timezones being used in a threaded app. */
  1608. if (e != NULL) {
  1609. TZ_file_read = 0; /* Reset if the TZ env var is set. */
  1610. } else if (TZ_file_read > 0) {
  1611. goto FAST_DONE;
  1612. }
  1613. #endif /* defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__) */
  1614. /* Warning!!! Since uClibc doesn't do lib locking, the following is
  1615. * potentially unsafe in a multi-threaded program since it is remotely
  1616. * possible that another thread could call setenv() for TZ and overwrite
  1617. * the string being parsed. So, don't do that... */
  1618. if ((!e /* TZ env var not set... */
  1619. #ifdef __UCLIBC_HAS_TZ_FILE__
  1620. && !(e = read_TZ_file(buf)) /* and no file or invalid file */
  1621. #endif /* __UCLIBC_HAS_TZ_FILE__ */
  1622. ) || !*e) { /* or set to empty string. */
  1623. ILLEGAL: /* TODO: Clean up the following... */
  1624. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1625. *oldval = 0; /* Set oldval to an empty string. */
  1626. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1627. memset(_time_tzinfo, 0, 2*sizeof(rule_struct));
  1628. strcpy(_time_tzinfo[0].tzname, UTC);
  1629. goto DONE;
  1630. }
  1631. if (*e == ':') { /* Ignore leading ':'. */
  1632. ++e;
  1633. }
  1634. #ifdef __UCLIBC_HAS_TZ_CACHING__
  1635. if (strcmp(e, oldval) == 0) { /* Same string as last time... */
  1636. goto FAST_DONE; /* So nothing to do. */
  1637. }
  1638. /* Make a copy of the TZ env string. It won't be nul-terminated if
  1639. * it is too long, but it that case it will be illegal and will be reset
  1640. * to the empty string anyway. */
  1641. strncpy(oldval, e, TZ_BUFLEN);
  1642. #endif /* __UCLIBC_HAS_TZ_CACHING__ */
  1643. count = 0;
  1644. new_rules[1].tzname[0] = 0;
  1645. LOOP:
  1646. /* Get std or dst name. */
  1647. c = 0;
  1648. if (*e == '<') {
  1649. ++e;
  1650. c = '>';
  1651. }
  1652. s = new_rules[count].tzname;
  1653. n = 0;
  1654. while (*e
  1655. && isascii(*e) /* SUSv3 requires char in portable char set. */
  1656. && (isalpha(*e)
  1657. || (c && (isalnum(*e) || (*e == '+') || (*e == '-'))))
  1658. ) {
  1659. *s++ = *e++;
  1660. if (++n > TZNAME_MAX) {
  1661. goto ILLEGAL;
  1662. }
  1663. }
  1664. *s = 0;
  1665. if ((n < 3) /* Check for minimum length. */
  1666. || (c && (*e++ != c)) /* Match any quoting '<'. */
  1667. ) {
  1668. goto ILLEGAL;
  1669. }
  1670. /* Get offset */
  1671. s = (char *) e;
  1672. if ((*e != '-') && (*e != '+')) {
  1673. if (count && !__isdigit_char(*e)) {
  1674. off -= 3600; /* Default to 1 hour ahead of std. */
  1675. goto SKIP_OFFSET;
  1676. }
  1677. --e;
  1678. }
  1679. ++e;
  1680. if (!(e = getoffset(e, &off))) {
  1681. goto ILLEGAL;
  1682. }
  1683. if (*s == '-') {
  1684. off = -off; /* Save off in case needed for dst default. */
  1685. }
  1686. SKIP_OFFSET:
  1687. new_rules[count].gmt_offset = off;
  1688. if (!count) {
  1689. new_rules[1].gmt_offset = off; /* Shouldn't be needed... */
  1690. if (*e) {
  1691. ++count;
  1692. goto LOOP;
  1693. }
  1694. } else { /* OK, we have dst, so get some rules. */
  1695. count = 0;
  1696. if (!*e) { /* No rules so default to US rules. */
  1697. e = DEFAULT_RULES;
  1698. }
  1699. do {
  1700. if (*e++ != ',') {
  1701. goto ILLEGAL;
  1702. }
  1703. n = 365;
  1704. s = (char *) RULE;
  1705. if ((c = *e++) == 'M') {
  1706. n = 12;
  1707. } else if (c == 'J') {
  1708. s += 8;
  1709. } else {
  1710. --e;
  1711. c = 0;
  1712. s += 6;
  1713. }
  1714. *(p = &new_rules[count].rule_type) = c;
  1715. if (c != 'M') {
  1716. p -= 2;
  1717. }
  1718. do {
  1719. ++s;
  1720. if (!(e = getnumber(e, &f))
  1721. || (((unsigned int)(f - s[1])) > n)
  1722. || (*s && (*e++ != *s))
  1723. ) {
  1724. goto ILLEGAL;
  1725. }
  1726. *--p = f;
  1727. } while ((n = *(s += 2)) > 0);
  1728. off = 2 * 60 * 60; /* Default to 2:00:00 */
  1729. if (*e == '/') {
  1730. ++e;
  1731. if (!(e = getoffset(e, &off))) {
  1732. goto ILLEGAL;
  1733. }
  1734. }
  1735. new_rules[count].dst_offset = off;
  1736. } while (++count < 2);
  1737. if (*e) {
  1738. goto ILLEGAL;
  1739. }
  1740. }
  1741. memcpy(_time_tzinfo, new_rules, sizeof(new_rules));
  1742. DONE:
  1743. tzname[0] = _time_tzinfo[0].tzname;
  1744. tzname[1] = _time_tzinfo[1].tzname;
  1745. daylight = !!_time_tzinfo[1].tzname[0];
  1746. timezone = _time_tzinfo[0].gmt_offset;
  1747. #if defined(__UCLIBC_HAS_TZ_FILE__) || defined(__UCLIBC_HAS_TZ_CACHING__)
  1748. FAST_DONE:
  1749. #endif
  1750. TZUNLOCK;
  1751. }
  1752. libc_hidden_def(tzset)
  1753. #endif
  1754. /**********************************************************************/
  1755. /* #ifdef L_utime */
  1756. /* utime is a syscall in both linux and elks. */
  1757. /* int utime(const char *path, const struct utimbuf *times) */
  1758. /* #endif */
  1759. /**********************************************************************/
  1760. /* Non-SUSv3 */
  1761. /**********************************************************************/
  1762. #ifdef L_utimes
  1763. #ifndef __BCC__
  1764. #error The uClibc version of utimes is in sysdeps/linux/common.
  1765. #endif
  1766. #include <utime.h>
  1767. #include <sys/time.h>
  1768. int utimes(const char *filename, register const struct timeval *tvp)
  1769. {
  1770. register struct utimbuf *p = NULL;
  1771. struct utimbuf utb;
  1772. if (tvp) {
  1773. p = &utb;
  1774. p->actime = tvp[0].tv_sec;
  1775. p->modtime = tvp[1].tv_sec;
  1776. }
  1777. return utime(filename, p);
  1778. }
  1779. #endif
  1780. /**********************************************************************/
  1781. #ifdef L__time_t2tm
  1782. static const uint16_t _vals[] = {
  1783. 60, 60, 24, 7 /* special */, 36524, 1461, 365, 0
  1784. };
  1785. static const unsigned char days[] = {
  1786. 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */
  1787. 29,
  1788. };
  1789. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  1790. static const char utc_string[] = "UTC";
  1791. #endif
  1792. /* Notes:
  1793. * If time_t is 32 bits, then no overflow is possible.
  1794. * It time_t is > 32 bits, this needs to be adjusted to deal with overflow.
  1795. */
  1796. /* Note: offset is the correction in _days_ to *timer! */
  1797. struct tm attribute_hidden *_time_t2tm(const time_t *__restrict timer,
  1798. int offset, struct tm *__restrict result)
  1799. {
  1800. register int *p;
  1801. time_t t1, t, v;
  1802. int wday; /* Note: wday can be uninitialized. */
  1803. {
  1804. register const uint16_t *vp;
  1805. t = *timer;
  1806. p = (int *) result;
  1807. p[7] = 0;
  1808. vp = _vals;
  1809. do {
  1810. if ((v = *vp) == 7) {
  1811. /* Overflow checking, assuming time_t is long int... */
  1812. #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L)
  1813. #if (INT_MAX == 2147483647L) && (LONG_MAX == 9223372036854775807L)
  1814. /* Valid range for t is [-784223472856L, 784223421720L].
  1815. * Outside of this range, the tm_year field will overflow. */
  1816. if (((unsigned long)(t + offset- -784223472856L))
  1817. > (784223421720L - -784223472856L)
  1818. ) {
  1819. return NULL;
  1820. }
  1821. #else
  1822. #error overflow conditions unknown
  1823. #endif
  1824. #endif
  1825. /* We have days since the epoch, so caluclate the weekday. */
  1826. #if defined(__BCC__) && TIME_T_IS_UNSIGNED
  1827. wday = (t + 4) % (*vp); /* t is unsigned */
  1828. #else
  1829. wday = ((int)((t % (*vp)) + 11)) % ((int)(*vp)); /* help bcc */
  1830. #endif
  1831. /* Set divisor to days in 400 years. Be kind to bcc... */
  1832. v = ((time_t)(vp[1])) << 2;
  1833. ++v;
  1834. /* Change to days since 1/1/1601 so that for 32 bit time_t
  1835. * values, we'll have t >= 0. This should be changed for
  1836. * archs with larger time_t types.
  1837. * Also, correct for offset since a multiple of 7. */
  1838. /* TODO: Does this still work on archs with time_t > 32 bits? */
  1839. t += (135140L - 366) + offset; /* 146097 - (365*30 + 7) -366 */
  1840. }
  1841. #if defined(__BCC__) && TIME_T_IS_UNSIGNED
  1842. t -= ((t1 = t / v) * v);
  1843. #else
  1844. if ((t -= ((t1 = t / v) * v)) < 0) {
  1845. t += v;
  1846. --t1;
  1847. }
  1848. #endif
  1849. if ((*vp == 7) && (t == v-1)) {
  1850. --t; /* Correct for 400th year leap case */
  1851. ++p[4]; /* Stash the extra day... */
  1852. }
  1853. #if defined(__BCC__) && 0
  1854. *p = t1;
  1855. if (v <= 60) {
  1856. *p = t;
  1857. t = t1;
  1858. }
  1859. ++p;
  1860. #else
  1861. if (v <= 60) {
  1862. *p++ = t;
  1863. t = t1;
  1864. } else {
  1865. *p++ = t1;
  1866. }
  1867. #endif
  1868. } while (*++vp);
  1869. }
  1870. if (p[-1] == 4) {
  1871. --p[-1];
  1872. t = 365;
  1873. }
  1874. *p += ((int) t); /* result[7] .. tm_yday */
  1875. p -= 2; /* at result[5] */
  1876. #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L)
  1877. /* Protect against overflow. TODO: Unecessary if int arith wraps? */
  1878. *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + (p[1] - 299); /* tm_year */
  1879. #else
  1880. *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + p[1] - 299; /* tm_year */
  1881. #endif
  1882. p[1] = wday; /* result[6] .. tm_wday */
  1883. {
  1884. register const unsigned char *d = days;
  1885. wday = 1900 + *p;
  1886. if (__isleap(wday)) {
  1887. d += 11;
  1888. }
  1889. wday = p[2] + 1; /* result[7] .. tm_yday */
  1890. *--p = 0; /* at result[4] .. tm_mon */
  1891. while (wday > *d) {
  1892. wday -= *d;
  1893. if (*d == 29) {
  1894. d -= 11; /* Backup to non-leap Feb. */
  1895. }
  1896. ++d;
  1897. ++*p; /* Increment tm_mon. */
  1898. }
  1899. p[-1] = wday; /* result[3] .. tm_mday */
  1900. }
  1901. /* TODO -- should this be 0? */
  1902. p[4] = 0; /* result[8] .. tm_isdst */
  1903. #ifdef __UCLIBC_HAS_TM_EXTENSIONS__
  1904. result->tm_gmtoff = 0;
  1905. result->tm_zone = utc_string;
  1906. #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
  1907. return result;
  1908. }
  1909. #endif
  1910. /**********************************************************************/
  1911. #ifdef L___time_tm
  1912. struct tm __time_tm; /* Global shared by gmtime() and localtime(). */
  1913. #endif
  1914. /**********************************************************************/
  1915. #ifdef L__time_mktime
  1916. time_t attribute_hidden _time_mktime(struct tm *timeptr, int store_on_success)
  1917. {
  1918. time_t t;
  1919. TZLOCK;
  1920. tzset();
  1921. t = _time_mktime_tzi(timeptr, store_on_success, _time_tzinfo);
  1922. TZUNLOCK;
  1923. return t;
  1924. }
  1925. #endif
  1926. /**********************************************************************/
  1927. #ifdef L__time_mktime_tzi
  1928. static const unsigned char __vals[] = {
  1929. 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */
  1930. 29,
  1931. };
  1932. time_t attribute_hidden _time_mktime_tzi(struct tm *timeptr, int store_on_success,
  1933. rule_struct *tzi)
  1934. {
  1935. #ifdef __BCC__
  1936. long days, secs;
  1937. #else
  1938. long long secs;
  1939. #endif
  1940. time_t t;
  1941. struct tm x;
  1942. /* 0:sec 1:min 2:hour 3:mday 4:mon 5:year 6:wday 7:yday 8:isdst */
  1943. register int *p = (int *) &x;
  1944. register const unsigned char *s;
  1945. int d, default_dst;
  1946. memcpy(p, timeptr, sizeof(struct tm));
  1947. if (!tzi[1].tzname[0]) { /* No dst in this timezone, */
  1948. p[8] = 0; /* so set tm_isdst to 0. */
  1949. }
  1950. default_dst = 0;
  1951. if (p[8]) { /* Either dst or unknown? */
  1952. default_dst = 1; /* Assume advancing (even if unknown). */
  1953. p[8] = ((p[8] > 0) ? 1 : -1); /* Normalize so abs() <= 1. */
  1954. }
  1955. d = 400;
  1956. p[5] = (p[5] - ((p[6] = p[5]/d) * d)) + (p[7] = p[4]/12);
  1957. if ((p[4] -= 12 * p[7]) < 0) {
  1958. p[4] += 12;
  1959. --p[5];
  1960. }
  1961. s = __vals;
  1962. d = (p[5] += 1900); /* Correct year. Now between 1900 and 2300. */
  1963. if (__isleap(d)) {
  1964. s += 11;
  1965. }
  1966. p[7] = 0;
  1967. d = p[4];
  1968. while (d) {
  1969. p[7] += *s;
  1970. if (*s == 29) {
  1971. s -= 11; /* Backup to non-leap Feb. */
  1972. }
  1973. ++s;
  1974. --d;
  1975. }
  1976. #ifdef __BCC__
  1977. d = p[5] - 1;
  1978. days = -719163L + ((long)d)*365 + ((d/4) - (d/100) + (d/400) + p[3] + p[7]);
  1979. secs = p[0] + 60*( p[1] + 60*((long)(p[2])) )
  1980. + tzi[default_dst].gmt_offset;
  1981. DST_CORRECT:
  1982. if (secs < 0) {
  1983. secs += 120009600L;
  1984. days -= 1389;
  1985. }
  1986. if ( ((unsigned long)(days + secs/86400L)) > 49710L) {
  1987. t = ((time_t)(-1));
  1988. goto DONE;
  1989. }
  1990. secs += (days * 86400L);
  1991. #else
  1992. d = p[5] - 1;
  1993. d = -719163L + d*365 + (d/4) - (d/100) + (d/400);
  1994. secs = p[0]
  1995. + tzi[default_dst].gmt_offset
  1996. + 60*( p[1]
  1997. + 60*(p[2]
  1998. + 24*(((146073L * ((long long)(p[6])) + d)
  1999. + p[3]) + p[7])));
  2000. DST_CORRECT:
  2001. if (((unsigned long long)(secs - LONG_MIN))
  2002. > (((unsigned long long)LONG_MAX) - LONG_MIN)
  2003. ) {
  2004. t = ((time_t)(-1));
  2005. goto DONE;
  2006. }
  2007. #endif
  2008. d = ((struct tm *)p)->tm_isdst;
  2009. t = secs;
  2010. __time_localtime_tzi(&t, (struct tm *)p, tzi);
  2011. if (t == ((time_t)(-1))) { /* Remember, time_t can be unsigned. */
  2012. goto DONE;
  2013. }
  2014. if ((d < 0) && (((struct tm *)p)->tm_isdst != default_dst)) {
  2015. #ifdef __BCC__
  2016. secs -= (days * 86400L);
  2017. #endif
  2018. secs += (tzi[1-default_dst].gmt_offset
  2019. - tzi[default_dst].gmt_offset);
  2020. goto DST_CORRECT;
  2021. }
  2022. if (store_on_success) {
  2023. memcpy(timeptr, p, sizeof(struct tm));
  2024. }
  2025. DONE:
  2026. return t;
  2027. }
  2028. #endif
  2029. /**********************************************************************/
  2030. #if defined(L_wcsftime) || defined(L_wcsftime_l)
  2031. #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
  2032. libc_hidden_proto(wcsftime)
  2033. libc_hidden_proto(wcsftime_l)
  2034. size_t wcsftime(wchar_t *__restrict s, size_t maxsize,
  2035. const wchar_t *__restrict format,
  2036. const struct tm *__restrict timeptr)
  2037. {
  2038. return wcsftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE);
  2039. }
  2040. libc_hidden_def(wcsftime)
  2041. #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  2042. libc_hidden_proto(__XL_NPP(wcsftime))
  2043. size_t __XL_NPP(wcsftime)(wchar_t *__restrict s, size_t maxsize,
  2044. const wchar_t *__restrict format,
  2045. const struct tm *__restrict timeptr __LOCALE_PARAM )
  2046. {
  2047. #warning wcsftime always fails
  2048. return 0; /* always fail */
  2049. }
  2050. libc_hidden_def(__XL_NPP(wcsftime))
  2051. #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
  2052. #endif
  2053. /**********************************************************************/
  2054. #ifdef L_dysize
  2055. /* Return the number of days in YEAR. */
  2056. int dysize(int year)
  2057. {
  2058. return __isleap(year) ? 366 : 365;
  2059. }
  2060. #endif
  2061. /**********************************************************************/