1 | /* Copyright (C) 2002-2016 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifdef HAVE_CONFIG_H |
19 | # include <config.h> |
20 | #endif |
21 | |
22 | #include <assert.h> |
23 | #include <ctype.h> |
24 | #include <langinfo.h> |
25 | #include <limits.h> |
26 | #include <string.h> |
27 | #include <time.h> |
28 | #include <stdbool.h> |
29 | |
30 | #ifdef _LIBC |
31 | # define HAVE_LOCALTIME_R 0 |
32 | # include "../locale/localeinfo.h" |
33 | #endif |
34 | |
35 | |
36 | #if ! HAVE_LOCALTIME_R && ! defined localtime_r |
37 | # ifdef _LIBC |
38 | # define localtime_r __localtime_r |
39 | # else |
40 | /* Approximate localtime_r as best we can in its absence. */ |
41 | # define localtime_r my_localtime_r |
42 | static struct tm *localtime_r (const time_t *, struct tm *); |
43 | static struct tm * |
44 | localtime_r (const time_t *t, struct tm *tp) |
45 | { |
46 | struct tm *l = localtime (t); |
47 | if (! l) |
48 | return 0; |
49 | *tp = *l; |
50 | return tp; |
51 | } |
52 | # endif /* ! _LIBC */ |
53 | #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */ |
54 | |
55 | |
56 | #define match_char(ch1, ch2) if (ch1 != ch2) return NULL |
57 | #if defined __GNUC__ && __GNUC__ >= 2 |
58 | # define match_string(cs1, s2) \ |
59 | ({ size_t len = strlen (cs1); \ |
60 | int result = __strncasecmp_l ((cs1), (s2), len, locale) == 0; \ |
61 | if (result) (s2) += len; \ |
62 | result; }) |
63 | #else |
64 | /* Oh come on. Get a reasonable compiler. */ |
65 | # define match_string(cs1, s2) \ |
66 | (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1)) |
67 | #endif |
68 | /* We intentionally do not use isdigit() for testing because this will |
69 | lead to problems with the wide character version. */ |
70 | #define get_number(from, to, n) \ |
71 | do { \ |
72 | int __n = n; \ |
73 | val = 0; \ |
74 | while (ISSPACE (*rp)) \ |
75 | ++rp; \ |
76 | if (*rp < '0' || *rp > '9') \ |
77 | return NULL; \ |
78 | do { \ |
79 | val *= 10; \ |
80 | val += *rp++ - '0'; \ |
81 | } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \ |
82 | if (val < from || val > to) \ |
83 | return NULL; \ |
84 | } while (0) |
85 | #ifdef _NL_CURRENT |
86 | # define get_alt_number(from, to, n) \ |
87 | ({ \ |
88 | __label__ do_normal; \ |
89 | \ |
90 | if (s.decided != raw) \ |
91 | { \ |
92 | val = _nl_parse_alt_digit (&rp HELPER_LOCALE_ARG); \ |
93 | if (val == -1 && s.decided != loc) \ |
94 | { \ |
95 | s.decided = loc; \ |
96 | goto do_normal; \ |
97 | } \ |
98 | if (val < from || val > to) \ |
99 | return NULL; \ |
100 | } \ |
101 | else \ |
102 | { \ |
103 | do_normal: \ |
104 | get_number (from, to, n); \ |
105 | } \ |
106 | 0; \ |
107 | }) |
108 | #else |
109 | # define get_alt_number(from, to, n) \ |
110 | /* We don't have the alternate representation. */ \ |
111 | get_number(from, to, n) |
112 | #endif |
113 | #define recursive(new_fmt) \ |
114 | (*(new_fmt) != '\0' \ |
115 | && (rp = __strptime_internal (rp, (new_fmt), tm, &s LOCALE_ARG)) != NULL) |
116 | |
117 | |
118 | #ifdef _LIBC |
119 | /* This is defined in locale/C-time.c in the GNU libc. */ |
120 | extern const struct __locale_data _nl_C_LC_TIME attribute_hidden; |
121 | |
122 | # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string) |
123 | # define ab_weekday_name \ |
124 | (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string) |
125 | # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string) |
126 | # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string) |
127 | # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string) |
128 | # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string) |
129 | # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string) |
130 | # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string) |
131 | # define HERE_T_FMT_AMPM \ |
132 | (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string) |
133 | # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string) |
134 | |
135 | # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n) |
136 | #else |
137 | static char const weekday_name[][10] = |
138 | { |
139 | "Sunday" , "Monday" , "Tuesday" , "Wednesday" , |
140 | "Thursday" , "Friday" , "Saturday" |
141 | }; |
142 | static char const ab_weekday_name[][4] = |
143 | { |
144 | "Sun" , "Mon" , "Tue" , "Wed" , "Thu" , "Fri" , "Sat" |
145 | }; |
146 | static char const month_name[][10] = |
147 | { |
148 | "January" , "February" , "March" , "April" , "May" , "June" , |
149 | "July" , "August" , "September" , "October" , "November" , "December" |
150 | }; |
151 | static char const ab_month_name[][4] = |
152 | { |
153 | "Jan" , "Feb" , "Mar" , "Apr" , "May" , "Jun" , |
154 | "Jul" , "Aug" , "Sep" , "Oct" , "Nov" , "Dec" |
155 | }; |
156 | # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y" |
157 | # define HERE_D_FMT "%m/%d/%y" |
158 | # define HERE_AM_STR "AM" |
159 | # define HERE_PM_STR "PM" |
160 | # define HERE_T_FMT_AMPM "%I:%M:%S %p" |
161 | # define HERE_T_FMT "%H:%M:%S" |
162 | |
163 | static const unsigned short int __mon_yday[2][13] = |
164 | { |
165 | /* Normal years. */ |
166 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, |
167 | /* Leap years. */ |
168 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } |
169 | }; |
170 | #endif |
171 | |
172 | #if defined _LIBC |
173 | /* We use this code also for the extended locale handling where the |
174 | function gets as an additional argument the locale which has to be |
175 | used. To access the values we have to redefine the _NL_CURRENT |
176 | macro. */ |
177 | # define strptime __strptime_l |
178 | # undef _NL_CURRENT |
179 | # define _NL_CURRENT(category, item) \ |
180 | (current->values[_NL_ITEM_INDEX (item)].string) |
181 | # undef _NL_CURRENT_WORD |
182 | # define _NL_CURRENT_WORD(category, item) \ |
183 | (current->values[_NL_ITEM_INDEX (item)].word) |
184 | # define LOCALE_PARAM , __locale_t locale |
185 | # define LOCALE_ARG , locale |
186 | # define HELPER_LOCALE_ARG , current |
187 | # define ISSPACE(Ch) __isspace_l (Ch, locale) |
188 | #else |
189 | # define LOCALE_PARAM |
190 | # define LOCALE_ARG |
191 | # define HELPER_LOCALE_ARG |
192 | # define ISSPACE(Ch) isspace (Ch) |
193 | #endif |
194 | |
195 | |
196 | |
197 | |
198 | #ifndef __isleap |
199 | /* Nonzero if YEAR is a leap year (every 4 years, |
200 | except every 100th isn't, and every 400th is). */ |
201 | # define __isleap(year) \ |
202 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
203 | #endif |
204 | |
205 | /* Compute the day of the week. */ |
206 | static void |
207 | day_of_the_week (struct tm *tm) |
208 | { |
209 | /* We know that January 1st 1970 was a Thursday (= 4). Compute the |
210 | difference between this data in the one on TM and so determine |
211 | the weekday. */ |
212 | int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2); |
213 | int wday = (-473 |
214 | + (365 * (tm->tm_year - 70)) |
215 | + (corr_year / 4) |
216 | - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0) |
217 | + (((corr_year / 4) / 25) / 4) |
218 | + __mon_yday[0][tm->tm_mon] |
219 | + tm->tm_mday - 1); |
220 | tm->tm_wday = ((wday % 7) + 7) % 7; |
221 | } |
222 | |
223 | /* Compute the day of the year. */ |
224 | static void |
225 | day_of_the_year (struct tm *tm) |
226 | { |
227 | tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon] |
228 | + (tm->tm_mday - 1)); |
229 | } |
230 | |
231 | |
232 | #ifdef _LIBC |
233 | char * |
234 | internal_function |
235 | #else |
236 | static char * |
237 | #endif |
238 | __strptime_internal (const char *rp, const char *fmt, struct tm *tmp, |
239 | void *statep LOCALE_PARAM) |
240 | { |
241 | #ifdef _LIBC |
242 | struct __locale_data *const current = locale->__locales[LC_TIME]; |
243 | #endif |
244 | |
245 | const char *rp_backup; |
246 | const char *rp_longest; |
247 | int cnt; |
248 | int cnt_longest; |
249 | size_t val; |
250 | size_t num_eras; |
251 | struct era_entry *era = NULL; |
252 | enum ptime_locale_status { not, loc, raw } decided_longest; |
253 | struct __strptime_state |
254 | { |
255 | unsigned int have_I : 1; |
256 | unsigned int have_wday : 1; |
257 | unsigned int have_yday : 1; |
258 | unsigned int have_mon : 1; |
259 | unsigned int have_mday : 1; |
260 | unsigned int have_uweek : 1; |
261 | unsigned int have_wweek : 1; |
262 | unsigned int is_pm : 1; |
263 | unsigned int want_century : 1; |
264 | unsigned int want_era : 1; |
265 | unsigned int want_xday : 1; |
266 | enum ptime_locale_status decided : 2; |
267 | signed char week_no; |
268 | signed char century; |
269 | int era_cnt; |
270 | } s; |
271 | struct tm tmb; |
272 | struct tm *tm; |
273 | |
274 | if (statep == NULL) |
275 | { |
276 | memset (&s, 0, sizeof (s)); |
277 | s.century = -1; |
278 | s.era_cnt = -1; |
279 | #ifdef _NL_CURRENT |
280 | s.decided = not; |
281 | #else |
282 | s.decided = raw; |
283 | #endif |
284 | tm = tmp; |
285 | } |
286 | else |
287 | { |
288 | s = *(struct __strptime_state *) statep; |
289 | tmb = *tmp; |
290 | tm = &tmb; |
291 | } |
292 | |
293 | while (*fmt != '\0') |
294 | { |
295 | /* A white space in the format string matches 0 more or white |
296 | space in the input string. */ |
297 | if (ISSPACE (*fmt)) |
298 | { |
299 | while (ISSPACE (*rp)) |
300 | ++rp; |
301 | ++fmt; |
302 | continue; |
303 | } |
304 | |
305 | /* Any character but `%' must be matched by the same character |
306 | in the iput string. */ |
307 | if (*fmt != '%') |
308 | { |
309 | match_char (*fmt++, *rp++); |
310 | continue; |
311 | } |
312 | |
313 | ++fmt; |
314 | /* We discard strftime modifiers. */ |
315 | while (*fmt == '-' || *fmt == '_' || *fmt == '0' |
316 | || *fmt == '^' || *fmt == '#') |
317 | ++fmt; |
318 | |
319 | /* And field width. */ |
320 | while (*fmt >= '0' && *fmt <= '9') |
321 | ++fmt; |
322 | |
323 | #ifndef _NL_CURRENT |
324 | /* We need this for handling the `E' modifier. */ |
325 | start_over: |
326 | #endif |
327 | |
328 | /* Make back up of current processing pointer. */ |
329 | rp_backup = rp; |
330 | |
331 | switch (*fmt++) |
332 | { |
333 | case '%': |
334 | /* Match the `%' character itself. */ |
335 | match_char ('%', *rp++); |
336 | break; |
337 | case 'a': |
338 | case 'A': |
339 | /* Match day of week. */ |
340 | rp_longest = NULL; |
341 | decided_longest = s.decided; |
342 | cnt_longest = -1; |
343 | for (cnt = 0; cnt < 7; ++cnt) |
344 | { |
345 | const char *trp; |
346 | #ifdef _NL_CURRENT |
347 | if (s.decided !=raw) |
348 | { |
349 | trp = rp; |
350 | if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), trp) |
351 | && trp > rp_longest) |
352 | { |
353 | rp_longest = trp; |
354 | cnt_longest = cnt; |
355 | if (s.decided == not |
356 | && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt), |
357 | weekday_name[cnt])) |
358 | decided_longest = loc; |
359 | } |
360 | trp = rp; |
361 | if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), trp) |
362 | && trp > rp_longest) |
363 | { |
364 | rp_longest = trp; |
365 | cnt_longest = cnt; |
366 | if (s.decided == not |
367 | && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), |
368 | ab_weekday_name[cnt])) |
369 | decided_longest = loc; |
370 | } |
371 | } |
372 | #endif |
373 | if (s.decided != loc |
374 | && (((trp = rp, match_string (weekday_name[cnt], trp)) |
375 | && trp > rp_longest) |
376 | || ((trp = rp, match_string (ab_weekday_name[cnt], rp)) |
377 | && trp > rp_longest))) |
378 | { |
379 | rp_longest = trp; |
380 | cnt_longest = cnt; |
381 | decided_longest = raw; |
382 | } |
383 | } |
384 | if (rp_longest == NULL) |
385 | /* Does not match a weekday name. */ |
386 | return NULL; |
387 | rp = rp_longest; |
388 | s.decided = decided_longest; |
389 | tm->tm_wday = cnt_longest; |
390 | s.have_wday = 1; |
391 | break; |
392 | case 'b': |
393 | case 'B': |
394 | case 'h': |
395 | /* Match month name. */ |
396 | rp_longest = NULL; |
397 | decided_longest = s.decided; |
398 | cnt_longest = -1; |
399 | for (cnt = 0; cnt < 12; ++cnt) |
400 | { |
401 | const char *trp; |
402 | #ifdef _NL_CURRENT |
403 | if (s.decided !=raw) |
404 | { |
405 | trp = rp; |
406 | if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), trp) |
407 | && trp > rp_longest) |
408 | { |
409 | rp_longest = trp; |
410 | cnt_longest = cnt; |
411 | if (s.decided == not |
412 | && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt), |
413 | month_name[cnt])) |
414 | decided_longest = loc; |
415 | } |
416 | trp = rp; |
417 | if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), trp) |
418 | && trp > rp_longest) |
419 | { |
420 | rp_longest = trp; |
421 | cnt_longest = cnt; |
422 | if (s.decided == not |
423 | && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), |
424 | ab_month_name[cnt])) |
425 | decided_longest = loc; |
426 | } |
427 | } |
428 | #endif |
429 | if (s.decided != loc |
430 | && (((trp = rp, match_string (month_name[cnt], trp)) |
431 | && trp > rp_longest) |
432 | || ((trp = rp, match_string (ab_month_name[cnt], trp)) |
433 | && trp > rp_longest))) |
434 | { |
435 | rp_longest = trp; |
436 | cnt_longest = cnt; |
437 | decided_longest = raw; |
438 | } |
439 | } |
440 | if (rp_longest == NULL) |
441 | /* Does not match a month name. */ |
442 | return NULL; |
443 | rp = rp_longest; |
444 | s.decided = decided_longest; |
445 | tm->tm_mon = cnt_longest; |
446 | s.have_mon = 1; |
447 | s.want_xday = 1; |
448 | break; |
449 | case 'c': |
450 | /* Match locale's date and time format. */ |
451 | #ifdef _NL_CURRENT |
452 | if (s.decided != raw) |
453 | { |
454 | if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT))) |
455 | { |
456 | if (s.decided == loc) |
457 | return NULL; |
458 | else |
459 | rp = rp_backup; |
460 | } |
461 | else |
462 | { |
463 | if (s.decided == not && |
464 | strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT)) |
465 | s.decided = loc; |
466 | s.want_xday = 1; |
467 | break; |
468 | } |
469 | s.decided = raw; |
470 | } |
471 | #endif |
472 | if (!recursive (HERE_D_T_FMT)) |
473 | return NULL; |
474 | s.want_xday = 1; |
475 | break; |
476 | case 'C': |
477 | /* Match century number. */ |
478 | match_century: |
479 | get_number (0, 99, 2); |
480 | s.century = val; |
481 | s.want_xday = 1; |
482 | break; |
483 | case 'd': |
484 | case 'e': |
485 | /* Match day of month. */ |
486 | get_number (1, 31, 2); |
487 | tm->tm_mday = val; |
488 | s.have_mday = 1; |
489 | s.want_xday = 1; |
490 | break; |
491 | case 'F': |
492 | if (!recursive ("%Y-%m-%d" )) |
493 | return NULL; |
494 | s.want_xday = 1; |
495 | break; |
496 | case 'x': |
497 | #ifdef _NL_CURRENT |
498 | if (s.decided != raw) |
499 | { |
500 | if (!recursive (_NL_CURRENT (LC_TIME, D_FMT))) |
501 | { |
502 | if (s.decided == loc) |
503 | return NULL; |
504 | else |
505 | rp = rp_backup; |
506 | } |
507 | else |
508 | { |
509 | if (s.decided == not |
510 | && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT)) |
511 | s.decided = loc; |
512 | s.want_xday = 1; |
513 | break; |
514 | } |
515 | s.decided = raw; |
516 | } |
517 | #endif |
518 | /* Fall through. */ |
519 | case 'D': |
520 | /* Match standard day format. */ |
521 | if (!recursive (HERE_D_FMT)) |
522 | return NULL; |
523 | s.want_xday = 1; |
524 | break; |
525 | case 'k': |
526 | case 'H': |
527 | /* Match hour in 24-hour clock. */ |
528 | get_number (0, 23, 2); |
529 | tm->tm_hour = val; |
530 | s.have_I = 0; |
531 | break; |
532 | case 'l': |
533 | /* Match hour in 12-hour clock. GNU extension. */ |
534 | case 'I': |
535 | /* Match hour in 12-hour clock. */ |
536 | get_number (1, 12, 2); |
537 | tm->tm_hour = val % 12; |
538 | s.have_I = 1; |
539 | break; |
540 | case 'j': |
541 | /* Match day number of year. */ |
542 | get_number (1, 366, 3); |
543 | tm->tm_yday = val - 1; |
544 | s.have_yday = 1; |
545 | break; |
546 | case 'm': |
547 | /* Match number of month. */ |
548 | get_number (1, 12, 2); |
549 | tm->tm_mon = val - 1; |
550 | s.have_mon = 1; |
551 | s.want_xday = 1; |
552 | break; |
553 | case 'M': |
554 | /* Match minute. */ |
555 | get_number (0, 59, 2); |
556 | tm->tm_min = val; |
557 | break; |
558 | case 'n': |
559 | case 't': |
560 | /* Match any white space. */ |
561 | while (ISSPACE (*rp)) |
562 | ++rp; |
563 | break; |
564 | case 'p': |
565 | /* Match locale's equivalent of AM/PM. */ |
566 | #ifdef _NL_CURRENT |
567 | if (s.decided != raw) |
568 | { |
569 | if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp)) |
570 | { |
571 | if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR)) |
572 | s.decided = loc; |
573 | s.is_pm = 0; |
574 | break; |
575 | } |
576 | if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp)) |
577 | { |
578 | if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR)) |
579 | s.decided = loc; |
580 | s.is_pm = 1; |
581 | break; |
582 | } |
583 | s.decided = raw; |
584 | } |
585 | #endif |
586 | if (!match_string (HERE_AM_STR, rp)) |
587 | { |
588 | if (match_string (HERE_PM_STR, rp)) |
589 | s.is_pm = 1; |
590 | else |
591 | return NULL; |
592 | } |
593 | else |
594 | s.is_pm = 0; |
595 | break; |
596 | case 'r': |
597 | #ifdef _NL_CURRENT |
598 | if (s.decided != raw) |
599 | { |
600 | if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM))) |
601 | { |
602 | if (s.decided == loc) |
603 | return NULL; |
604 | else |
605 | rp = rp_backup; |
606 | } |
607 | else |
608 | { |
609 | if (s.decided == not && |
610 | strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM), |
611 | HERE_T_FMT_AMPM)) |
612 | s.decided = loc; |
613 | break; |
614 | } |
615 | s.decided = raw; |
616 | } |
617 | #endif |
618 | if (!recursive (HERE_T_FMT_AMPM)) |
619 | return NULL; |
620 | break; |
621 | case 'R': |
622 | if (!recursive ("%H:%M" )) |
623 | return NULL; |
624 | break; |
625 | case 's': |
626 | { |
627 | /* The number of seconds may be very high so we cannot use |
628 | the `get_number' macro. Instead read the number |
629 | character for character and construct the result while |
630 | doing this. */ |
631 | time_t secs = 0; |
632 | if (*rp < '0' || *rp > '9') |
633 | /* We need at least one digit. */ |
634 | return NULL; |
635 | |
636 | do |
637 | { |
638 | secs *= 10; |
639 | secs += *rp++ - '0'; |
640 | } |
641 | while (*rp >= '0' && *rp <= '9'); |
642 | |
643 | if (localtime_r (&secs, tm) == NULL) |
644 | /* Error in function. */ |
645 | return NULL; |
646 | } |
647 | break; |
648 | case 'S': |
649 | get_number (0, 61, 2); |
650 | tm->tm_sec = val; |
651 | break; |
652 | case 'X': |
653 | #ifdef _NL_CURRENT |
654 | if (s.decided != raw) |
655 | { |
656 | if (!recursive (_NL_CURRENT (LC_TIME, T_FMT))) |
657 | { |
658 | if (s.decided == loc) |
659 | return NULL; |
660 | else |
661 | rp = rp_backup; |
662 | } |
663 | else |
664 | { |
665 | if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT)) |
666 | s.decided = loc; |
667 | break; |
668 | } |
669 | s.decided = raw; |
670 | } |
671 | #endif |
672 | /* Fall through. */ |
673 | case 'T': |
674 | if (!recursive (HERE_T_FMT)) |
675 | return NULL; |
676 | break; |
677 | case 'u': |
678 | get_number (1, 7, 1); |
679 | tm->tm_wday = val % 7; |
680 | s.have_wday = 1; |
681 | break; |
682 | case 'g': |
683 | get_number (0, 99, 2); |
684 | /* XXX This cannot determine any field in TM. */ |
685 | break; |
686 | case 'G': |
687 | if (*rp < '0' || *rp > '9') |
688 | return NULL; |
689 | /* XXX Ignore the number since we would need some more |
690 | information to compute a real date. */ |
691 | do |
692 | ++rp; |
693 | while (*rp >= '0' && *rp <= '9'); |
694 | break; |
695 | case 'U': |
696 | get_number (0, 53, 2); |
697 | s.week_no = val; |
698 | s.have_uweek = 1; |
699 | break; |
700 | case 'W': |
701 | get_number (0, 53, 2); |
702 | s.week_no = val; |
703 | s.have_wweek = 1; |
704 | break; |
705 | case 'V': |
706 | get_number (0, 53, 2); |
707 | /* XXX This cannot determine any field in TM without some |
708 | information. */ |
709 | break; |
710 | case 'w': |
711 | /* Match number of weekday. */ |
712 | get_number (0, 6, 1); |
713 | tm->tm_wday = val; |
714 | s.have_wday = 1; |
715 | break; |
716 | case 'y': |
717 | match_year_in_century: |
718 | /* Match year within century. */ |
719 | get_number (0, 99, 2); |
720 | /* The "Year 2000: The Millennium Rollover" paper suggests that |
721 | values in the range 69-99 refer to the twentieth century. */ |
722 | tm->tm_year = val >= 69 ? val : val + 100; |
723 | /* Indicate that we want to use the century, if specified. */ |
724 | s.want_century = 1; |
725 | s.want_xday = 1; |
726 | break; |
727 | case 'Y': |
728 | /* Match year including century number. */ |
729 | get_number (0, 9999, 4); |
730 | tm->tm_year = val - 1900; |
731 | s.want_century = 0; |
732 | s.want_xday = 1; |
733 | break; |
734 | case 'Z': |
735 | /* Read timezone but perform no conversion. */ |
736 | while (ISSPACE (*rp)) |
737 | rp++; |
738 | while (!ISSPACE (*rp) && *rp != '\0') |
739 | rp++; |
740 | break; |
741 | case 'z': |
742 | /* We recognize four formats: |
743 | 1. Two digits specify hours. |
744 | 2. Four digits specify hours and minutes. |
745 | 3. Two digits, ':', and two digits specify hours and minutes. |
746 | 4. 'Z' is equivalent to +0000. */ |
747 | { |
748 | val = 0; |
749 | while (ISSPACE (*rp)) |
750 | ++rp; |
751 | if (*rp == 'Z') |
752 | { |
753 | ++rp; |
754 | tm->tm_gmtoff = 0; |
755 | break; |
756 | } |
757 | if (*rp != '+' && *rp != '-') |
758 | return NULL; |
759 | bool neg = *rp++ == '-'; |
760 | int n = 0; |
761 | while (n < 4 && *rp >= '0' && *rp <= '9') |
762 | { |
763 | val = val * 10 + *rp++ - '0'; |
764 | ++n; |
765 | if (*rp == ':' && n == 2 && isdigit (*(rp + 1))) |
766 | ++rp; |
767 | } |
768 | if (n == 2) |
769 | val *= 100; |
770 | else if (n != 4) |
771 | /* Only two or four digits recognized. */ |
772 | return NULL; |
773 | else if (val % 100 >= 60) |
774 | /* Minutes valid range is 0 through 59. */ |
775 | return NULL; |
776 | tm->tm_gmtoff = (val / 100) * 3600 + (val % 100) * 60; |
777 | if (neg) |
778 | tm->tm_gmtoff = -tm->tm_gmtoff; |
779 | } |
780 | break; |
781 | case 'E': |
782 | #ifdef _NL_CURRENT |
783 | switch (*fmt++) |
784 | { |
785 | case 'c': |
786 | /* Match locale's alternate date and time format. */ |
787 | if (s.decided != raw) |
788 | { |
789 | const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT); |
790 | |
791 | if (*fmt == '\0') |
792 | fmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
793 | |
794 | if (!recursive (fmt)) |
795 | { |
796 | if (s.decided == loc) |
797 | return NULL; |
798 | else |
799 | rp = rp_backup; |
800 | } |
801 | else |
802 | { |
803 | if (strcmp (fmt, HERE_D_T_FMT)) |
804 | s.decided = loc; |
805 | s.want_xday = 1; |
806 | break; |
807 | } |
808 | s.decided = raw; |
809 | } |
810 | /* The C locale has no era information, so use the |
811 | normal representation. */ |
812 | if (!recursive (HERE_D_T_FMT)) |
813 | return NULL; |
814 | s.want_xday = 1; |
815 | break; |
816 | case 'C': |
817 | if (s.decided != raw) |
818 | { |
819 | if (s.era_cnt >= 0) |
820 | { |
821 | era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG); |
822 | if (era != NULL && match_string (era->era_name, rp)) |
823 | { |
824 | s.decided = loc; |
825 | break; |
826 | } |
827 | else |
828 | return NULL; |
829 | } |
830 | |
831 | num_eras = _NL_CURRENT_WORD (LC_TIME, |
832 | _NL_TIME_ERA_NUM_ENTRIES); |
833 | for (s.era_cnt = 0; s.era_cnt < (int) num_eras; |
834 | ++s.era_cnt, rp = rp_backup) |
835 | { |
836 | era = _nl_select_era_entry (s.era_cnt |
837 | HELPER_LOCALE_ARG); |
838 | if (era != NULL && match_string (era->era_name, rp)) |
839 | { |
840 | s.decided = loc; |
841 | break; |
842 | } |
843 | } |
844 | if (s.era_cnt != (int) num_eras) |
845 | break; |
846 | |
847 | s.era_cnt = -1; |
848 | if (s.decided == loc) |
849 | return NULL; |
850 | |
851 | s.decided = raw; |
852 | } |
853 | /* The C locale has no era information, so use the |
854 | normal representation. */ |
855 | goto match_century; |
856 | case 'y': |
857 | if (s.decided != raw) |
858 | { |
859 | get_number(0, 9999, 4); |
860 | tm->tm_year = val; |
861 | s.want_era = 1; |
862 | s.want_xday = 1; |
863 | s.want_century = 1; |
864 | |
865 | if (s.era_cnt >= 0) |
866 | { |
867 | assert (s.decided == loc); |
868 | |
869 | era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG); |
870 | bool match = false; |
871 | if (era != NULL) |
872 | { |
873 | int delta = ((tm->tm_year - era->offset) |
874 | * era->absolute_direction); |
875 | match = (delta >= 0 |
876 | && delta < (((int64_t) era->stop_date[0] |
877 | - (int64_t) era->start_date[0]) |
878 | * era->absolute_direction)); |
879 | } |
880 | if (! match) |
881 | return NULL; |
882 | |
883 | break; |
884 | } |
885 | |
886 | num_eras = _NL_CURRENT_WORD (LC_TIME, |
887 | _NL_TIME_ERA_NUM_ENTRIES); |
888 | for (s.era_cnt = 0; s.era_cnt < (int) num_eras; ++s.era_cnt) |
889 | { |
890 | era = _nl_select_era_entry (s.era_cnt |
891 | HELPER_LOCALE_ARG); |
892 | if (era != NULL) |
893 | { |
894 | int delta = ((tm->tm_year - era->offset) |
895 | * era->absolute_direction); |
896 | if (delta >= 0 |
897 | && delta < (((int64_t) era->stop_date[0] |
898 | - (int64_t) era->start_date[0]) |
899 | * era->absolute_direction)) |
900 | { |
901 | s.decided = loc; |
902 | break; |
903 | } |
904 | } |
905 | } |
906 | if (s.era_cnt != (int) num_eras) |
907 | break; |
908 | |
909 | s.era_cnt = -1; |
910 | if (s.decided == loc) |
911 | return NULL; |
912 | |
913 | s.decided = raw; |
914 | } |
915 | |
916 | goto match_year_in_century; |
917 | case 'Y': |
918 | if (s.decided != raw) |
919 | { |
920 | num_eras = _NL_CURRENT_WORD (LC_TIME, |
921 | _NL_TIME_ERA_NUM_ENTRIES); |
922 | for (s.era_cnt = 0; s.era_cnt < (int) num_eras; |
923 | ++s.era_cnt, rp = rp_backup) |
924 | { |
925 | era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG); |
926 | if (era != NULL && recursive (era->era_format)) |
927 | break; |
928 | } |
929 | if (s.era_cnt == (int) num_eras) |
930 | { |
931 | s.era_cnt = -1; |
932 | if (s.decided == loc) |
933 | return NULL; |
934 | else |
935 | rp = rp_backup; |
936 | } |
937 | else |
938 | { |
939 | s.decided = loc; |
940 | break; |
941 | } |
942 | |
943 | s.decided = raw; |
944 | } |
945 | get_number (0, 9999, 4); |
946 | tm->tm_year = val - 1900; |
947 | s.want_century = 0; |
948 | s.want_xday = 1; |
949 | break; |
950 | case 'x': |
951 | if (s.decided != raw) |
952 | { |
953 | const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT); |
954 | |
955 | if (*fmt == '\0') |
956 | fmt = _NL_CURRENT (LC_TIME, D_FMT); |
957 | |
958 | if (!recursive (fmt)) |
959 | { |
960 | if (s.decided == loc) |
961 | return NULL; |
962 | else |
963 | rp = rp_backup; |
964 | } |
965 | else |
966 | { |
967 | if (strcmp (fmt, HERE_D_FMT)) |
968 | s.decided = loc; |
969 | break; |
970 | } |
971 | s.decided = raw; |
972 | } |
973 | if (!recursive (HERE_D_FMT)) |
974 | return NULL; |
975 | break; |
976 | case 'X': |
977 | if (s.decided != raw) |
978 | { |
979 | const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT); |
980 | |
981 | if (*fmt == '\0') |
982 | fmt = _NL_CURRENT (LC_TIME, T_FMT); |
983 | |
984 | if (!recursive (fmt)) |
985 | { |
986 | if (s.decided == loc) |
987 | return NULL; |
988 | else |
989 | rp = rp_backup; |
990 | } |
991 | else |
992 | { |
993 | if (strcmp (fmt, HERE_T_FMT)) |
994 | s.decided = loc; |
995 | break; |
996 | } |
997 | s.decided = raw; |
998 | } |
999 | if (!recursive (HERE_T_FMT)) |
1000 | return NULL; |
1001 | break; |
1002 | default: |
1003 | return NULL; |
1004 | } |
1005 | break; |
1006 | #else |
1007 | /* We have no information about the era format. Just use |
1008 | the normal format. */ |
1009 | if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y' |
1010 | && *fmt != 'x' && *fmt != 'X') |
1011 | /* This is an illegal format. */ |
1012 | return NULL; |
1013 | |
1014 | goto start_over; |
1015 | #endif |
1016 | case 'O': |
1017 | switch (*fmt++) |
1018 | { |
1019 | case 'd': |
1020 | case 'e': |
1021 | /* Match day of month using alternate numeric symbols. */ |
1022 | get_alt_number (1, 31, 2); |
1023 | tm->tm_mday = val; |
1024 | s.have_mday = 1; |
1025 | s.want_xday = 1; |
1026 | break; |
1027 | case 'H': |
1028 | /* Match hour in 24-hour clock using alternate numeric |
1029 | symbols. */ |
1030 | get_alt_number (0, 23, 2); |
1031 | tm->tm_hour = val; |
1032 | s.have_I = 0; |
1033 | break; |
1034 | case 'I': |
1035 | /* Match hour in 12-hour clock using alternate numeric |
1036 | symbols. */ |
1037 | get_alt_number (1, 12, 2); |
1038 | tm->tm_hour = val % 12; |
1039 | s.have_I = 1; |
1040 | break; |
1041 | case 'm': |
1042 | /* Match month using alternate numeric symbols. */ |
1043 | get_alt_number (1, 12, 2); |
1044 | tm->tm_mon = val - 1; |
1045 | s.have_mon = 1; |
1046 | s.want_xday = 1; |
1047 | break; |
1048 | case 'M': |
1049 | /* Match minutes using alternate numeric symbols. */ |
1050 | get_alt_number (0, 59, 2); |
1051 | tm->tm_min = val; |
1052 | break; |
1053 | case 'S': |
1054 | /* Match seconds using alternate numeric symbols. */ |
1055 | get_alt_number (0, 61, 2); |
1056 | tm->tm_sec = val; |
1057 | break; |
1058 | case 'U': |
1059 | get_alt_number (0, 53, 2); |
1060 | s.week_no = val; |
1061 | s.have_uweek = 1; |
1062 | break; |
1063 | case 'W': |
1064 | get_alt_number (0, 53, 2); |
1065 | s.week_no = val; |
1066 | s.have_wweek = 1; |
1067 | break; |
1068 | case 'V': |
1069 | get_alt_number (0, 53, 2); |
1070 | /* XXX This cannot determine any field in TM without |
1071 | further information. */ |
1072 | break; |
1073 | case 'w': |
1074 | /* Match number of weekday using alternate numeric symbols. */ |
1075 | get_alt_number (0, 6, 1); |
1076 | tm->tm_wday = val; |
1077 | s.have_wday = 1; |
1078 | break; |
1079 | case 'y': |
1080 | /* Match year within century using alternate numeric symbols. */ |
1081 | get_alt_number (0, 99, 2); |
1082 | tm->tm_year = val >= 69 ? val : val + 100; |
1083 | s.want_xday = 1; |
1084 | break; |
1085 | default: |
1086 | return NULL; |
1087 | } |
1088 | break; |
1089 | default: |
1090 | return NULL; |
1091 | } |
1092 | } |
1093 | |
1094 | if (statep != NULL) |
1095 | { |
1096 | /* Recursive invocation, returning success, so |
1097 | update parent's struct tm and state. */ |
1098 | *(struct __strptime_state *) statep = s; |
1099 | *tmp = tmb; |
1100 | return (char *) rp; |
1101 | } |
1102 | |
1103 | if (s.have_I && s.is_pm) |
1104 | tm->tm_hour += 12; |
1105 | |
1106 | if (s.century != -1) |
1107 | { |
1108 | if (s.want_century) |
1109 | tm->tm_year = tm->tm_year % 100 + (s.century - 19) * 100; |
1110 | else |
1111 | /* Only the century, but not the year. Strange, but so be it. */ |
1112 | tm->tm_year = (s.century - 19) * 100; |
1113 | } |
1114 | |
1115 | if (s.era_cnt != -1) |
1116 | { |
1117 | era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG); |
1118 | if (era == NULL) |
1119 | return NULL; |
1120 | if (s.want_era) |
1121 | tm->tm_year = (era->start_date[0] |
1122 | + ((tm->tm_year - era->offset) |
1123 | * era->absolute_direction)); |
1124 | else |
1125 | /* Era start year assumed. */ |
1126 | tm->tm_year = era->start_date[0]; |
1127 | } |
1128 | else |
1129 | if (s.want_era) |
1130 | { |
1131 | /* No era found but we have seen an E modifier. Rectify some |
1132 | values. */ |
1133 | if (s.want_century && s.century == -1 && tm->tm_year < 69) |
1134 | tm->tm_year += 100; |
1135 | } |
1136 | |
1137 | if (s.want_xday && !s.have_wday) |
1138 | { |
1139 | if ( !(s.have_mon && s.have_mday) && s.have_yday) |
1140 | { |
1141 | /* We don't have tm_mon and/or tm_mday, compute them. */ |
1142 | int t_mon = 0; |
1143 | while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday) |
1144 | t_mon++; |
1145 | if (!s.have_mon) |
1146 | tm->tm_mon = t_mon - 1; |
1147 | if (!s.have_mday) |
1148 | tm->tm_mday = |
1149 | (tm->tm_yday |
1150 | - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1); |
1151 | s.have_mon = 1; |
1152 | s.have_mday = 1; |
1153 | } |
1154 | /* Don't crash in day_of_the_week if tm_mon is uninitialized. */ |
1155 | if (s.have_mon || (unsigned) tm->tm_mon <= 11) |
1156 | day_of_the_week (tm); |
1157 | } |
1158 | |
1159 | if (s.want_xday && !s.have_yday && (s.have_mon || (unsigned) tm->tm_mon <= 11)) |
1160 | day_of_the_year (tm); |
1161 | |
1162 | if ((s.have_uweek || s.have_wweek) && s.have_wday) |
1163 | { |
1164 | int save_wday = tm->tm_wday; |
1165 | int save_mday = tm->tm_mday; |
1166 | int save_mon = tm->tm_mon; |
1167 | int w_offset = s.have_uweek ? 0 : 1; |
1168 | |
1169 | tm->tm_mday = 1; |
1170 | tm->tm_mon = 0; |
1171 | day_of_the_week (tm); |
1172 | if (s.have_mday) |
1173 | tm->tm_mday = save_mday; |
1174 | if (s.have_mon) |
1175 | tm->tm_mon = save_mon; |
1176 | |
1177 | if (!s.have_yday) |
1178 | tm->tm_yday = ((7 - (tm->tm_wday - w_offset)) % 7 |
1179 | + (s.week_no - 1) * 7 |
1180 | + (save_wday - w_offset + 7) % 7); |
1181 | |
1182 | if (!s.have_mday || !s.have_mon) |
1183 | { |
1184 | int t_mon = 0; |
1185 | while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] |
1186 | <= tm->tm_yday) |
1187 | t_mon++; |
1188 | if (!s.have_mon) |
1189 | tm->tm_mon = t_mon - 1; |
1190 | if (!s.have_mday) |
1191 | tm->tm_mday = |
1192 | (tm->tm_yday |
1193 | - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1); |
1194 | } |
1195 | |
1196 | tm->tm_wday = save_wday; |
1197 | } |
1198 | |
1199 | return (char *) rp; |
1200 | } |
1201 | |
1202 | |
1203 | char * |
1204 | strptime (const char *buf, const char *format, struct tm *tm LOCALE_PARAM) |
1205 | { |
1206 | return __strptime_internal (buf, format, tm, NULL LOCALE_ARG); |
1207 | } |
1208 | |
1209 | #ifdef _LIBC |
1210 | weak_alias (__strptime_l, strptime_l) |
1211 | #endif |
1212 | |