Commit | Line | Data |
16433e2b |
1 | #ifdef __cplusplus |
c944940b |
2 | extern "C" { |
16433e2b |
3 | #endif |
4 | #include "EXTERN.h" |
5 | #include "perl.h" |
6 | #include "XSUB.h" |
7 | #include <time.h> |
8 | #ifdef __cplusplus |
9 | } |
10 | #endif |
11 | |
12 | /* XXX struct tm on some systems (SunOS4/BSD) contains extra (non POSIX) |
d4d72fe6 |
13 | * fields for which we don't have Configure support prior to Perl 5.8.0: |
16433e2b |
14 | * char *tm_zone; -- abbreviation of timezone name |
15 | * long tm_gmtoff; -- offset from GMT in seconds |
16 | * To workaround core dumps from the uninitialised tm_zone we get the |
17 | * system to give us a reasonable struct to copy. This fix means that |
18 | * strftime uses the tm_zone and tm_gmtoff values returned by |
19 | * localtime(time()). That should give the desired result most of the |
20 | * time. But probably not always! |
21 | * |
d4d72fe6 |
22 | * This is a vestigial workaround for Perls prior to 5.8.0. We now |
23 | * rely on the initialization (still likely a workaround) in util.c. |
16433e2b |
24 | */ |
d4d72fe6 |
25 | #if !defined(PERL_VERSION) || PERL_VERSION < 8 |
26 | |
036055ae |
27 | #if defined(HAS_GNULIBC) |
16433e2b |
28 | # ifndef STRUCT_TM_HASZONE |
29 | # define STRUCT_TM_HASZONE |
30 | # else |
31 | # define USE_TM_GMTOFF |
32 | # endif |
33 | #endif |
34 | |
d4d72fe6 |
35 | #endif /* end of pre-5.8 */ |
36 | |
16433e2b |
37 | #define DAYS_PER_YEAR 365 |
38 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) |
39 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) |
40 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) |
41 | #define SECS_PER_HOUR (60*60) |
42 | #define SECS_PER_DAY (24*SECS_PER_HOUR) |
43 | /* parentheses deliberately absent on these two, otherwise they don't work */ |
44 | #define MONTH_TO_DAYS 153/5 |
45 | #define DAYS_TO_MONTH 5/153 |
46 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ |
47 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) |
48 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ |
49 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ |
50 | |
d4d72fe6 |
51 | #if !defined(PERL_VERSION) || PERL_VERSION < 8 |
52 | |
16433e2b |
53 | #ifdef STRUCT_TM_HASZONE |
54 | static void |
55 | my_init_tm(struct tm *ptm) /* see mktime, strftime and asctime */ |
56 | { |
57 | Time_t now; |
58 | (void)time(&now); |
59 | Copy(localtime(&now), ptm, 1, struct tm); |
60 | } |
61 | |
62 | #else |
63 | # define my_init_tm(ptm) |
64 | #endif |
65 | |
d4d72fe6 |
66 | #else |
67 | /* use core version from util.c in 5.8.0 and later */ |
68 | # define my_init_tm init_tm |
69 | #endif |
70 | |
6e073399 |
71 | #ifdef WIN32 |
72 | |
73 | /* |
74 | * (1) The CRT maintains its own copy of the environment, separate from |
75 | * the Win32API copy. |
76 | * |
77 | * (2) CRT getenv() retrieves from this copy. CRT putenv() updates this |
78 | * copy, and then calls SetEnvironmentVariableA() to update the Win32API |
79 | * copy. |
80 | * |
81 | * (3) win32_getenv() and win32_putenv() call GetEnvironmentVariableA() and |
82 | * SetEnvironmentVariableA() directly, bypassing the CRT copy of the |
83 | * environment. |
84 | * |
85 | * (4) The CRT strftime() "%Z" implementation calls __tzset(). That |
86 | * calls CRT tzset(), but only the first time it is called, and in turn |
87 | * that uses CRT getenv("TZ") to retrieve the timezone info from the CRT |
88 | * local copy of the environment and hence gets the original setting as |
89 | * perl never updates the CRT copy when assigning to $ENV{TZ}. |
90 | * |
91 | * Therefore, we need to retrieve the value of $ENV{TZ} and call CRT |
12016aad |
92 | * putenv() to update the CRT copy of the environment (if it is different) |
93 | * whenever we're about to call tzset(). |
94 | * |
95 | * In addition to all that, when perl is built with PERL_IMPLICIT_SYS |
96 | * defined: |
97 | * |
98 | * (a) Each interpreter has its own copy of the environment inside the |
99 | * perlhost structure. That allows applications that host multiple |
100 | * independent Perl interpreters to isolate environment changes from |
101 | * each other. (This is similar to how the perlhost mechanism keeps a |
102 | * separate working directory for each Perl interpreter, so that calling |
103 | * chdir() will not affect other interpreters.) |
104 | * |
105 | * (b) Only the first Perl interpreter instantiated within a process will |
106 | * "write through" environment changes to the process environment. |
107 | * |
108 | * (c) Even the primary Perl interpreter won't update the CRT copy of the |
109 | * the environment, only the Win32API copy (it calls win32_putenv()). |
110 | * |
111 | * As with CPerlHost::Getenv() and CPerlHost::Putenv() themselves, it makes |
112 | * sense to only update the process environment when inside the main |
113 | * interpreter, but we don't have access to CPerlHost's m_bTopLevel member |
114 | * from here so we'll just have to check PL_curinterp instead. |
115 | * |
116 | * Therefore, we can simply #undef getenv() and putenv() so that those names |
117 | * always refer to the CRT functions, and explicitly call win32_getenv() to |
118 | * access perl's %ENV. |
119 | * |
120 | * We also #undef malloc() and free() to be sure we are using the CRT |
121 | * functions otherwise under PERL_IMPLICIT_SYS they are redefined to calls |
122 | * into VMem::Malloc() and VMem::Free() and all allocations will be freed |
123 | * when the Perl interpreter is being destroyed so we'd end up with a pointer |
124 | * into deallocated memory in environ[] if a program embedding a Perl |
125 | * interpreter continues to operate even after the main Perl interpreter has |
126 | * been destroyed. |
127 | * |
128 | * Note that we don't free() the malloc()ed memory unless and until we call |
129 | * malloc() again ourselves because the CRT putenv() function simply puts its |
130 | * pointer argument into the environ[] arrary (it doesn't make a copy of it) |
131 | * so this memory must otherwise be leaked. |
6e073399 |
132 | */ |
133 | |
6e073399 |
134 | #undef getenv |
6e073399 |
135 | #undef putenv |
12016aad |
136 | #undef malloc |
137 | #undef free |
6e073399 |
138 | |
139 | static void |
140 | fix_win32_tzenv(void) |
141 | { |
12016aad |
142 | static char* oldenv = NULL; |
143 | char* newenv; |
144 | const char* perl_tz_env = win32_getenv("TZ"); |
145 | const char* crt_tz_env = getenv("TZ"); |
146 | if (perl_tz_env == NULL) |
147 | perl_tz_env = ""; |
148 | if (crt_tz_env == NULL) |
149 | crt_tz_env = ""; |
150 | if (strcmp(perl_tz_env, crt_tz_env) != 0) { |
151 | newenv = (char*)malloc((strlen(perl_tz_env) + 4) * sizeof(char)); |
152 | if (newenv != NULL) { |
153 | sprintf(newenv, "TZ=%s", perl_tz_env); |
154 | putenv(newenv); |
155 | if (oldenv != NULL) |
156 | free(oldenv); |
157 | oldenv = newenv; |
158 | } |
6e073399 |
159 | } |
6e073399 |
160 | } |
161 | |
162 | #endif |
163 | |
81ab4c44 |
164 | /* |
165 | * my_tzset - wrapper to tzset() with a fix to make it work (better) on Win32. |
166 | * This code is duplicated in the POSIX module, so any changes made here |
167 | * should be made there too. |
168 | */ |
6e073399 |
169 | static void |
12016aad |
170 | my_tzset(pTHX) |
6e073399 |
171 | { |
172 | #ifdef WIN32 |
12016aad |
173 | #if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS) |
174 | if (PL_curinterp == aTHX) |
175 | #endif |
176 | fix_win32_tzenv(); |
6e073399 |
177 | #endif |
178 | tzset(); |
179 | } |
180 | |
16433e2b |
181 | /* |
182 | * my_mini_mktime - normalise struct tm values without the localtime() |
124e6c84 |
183 | * semantics (and overhead) of mktime(). Stolen shamelessly from Perl's |
184 | * Perl_mini_mktime() in util.c - for details on the algorithm, see that |
185 | * file. |
16433e2b |
186 | */ |
187 | static void |
188 | my_mini_mktime(struct tm *ptm) |
189 | { |
190 | int yearday; |
191 | int secs; |
192 | int month, mday, year, jday; |
193 | int odd_cent, odd_year; |
194 | |
16433e2b |
195 | year = 1900 + ptm->tm_year; |
196 | month = ptm->tm_mon; |
197 | mday = ptm->tm_mday; |
198 | /* allow given yday with no month & mday to dominate the result */ |
199 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { |
200 | month = 0; |
201 | mday = 0; |
202 | jday = 1 + ptm->tm_yday; |
203 | } |
204 | else { |
205 | jday = 0; |
206 | } |
207 | if (month >= 2) |
208 | month+=2; |
209 | else |
210 | month+=14, year--; |
211 | |
212 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; |
213 | yearday += month*MONTH_TO_DAYS + mday + jday; |
214 | /* |
215 | * Note that we don't know when leap-seconds were or will be, |
216 | * so we have to trust the user if we get something which looks |
217 | * like a sensible leap-second. Wild values for seconds will |
218 | * be rationalised, however. |
219 | */ |
220 | if ((unsigned) ptm->tm_sec <= 60) { |
221 | secs = 0; |
222 | } |
223 | else { |
224 | secs = ptm->tm_sec; |
225 | ptm->tm_sec = 0; |
226 | } |
227 | secs += 60 * ptm->tm_min; |
228 | secs += SECS_PER_HOUR * ptm->tm_hour; |
229 | if (secs < 0) { |
230 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { |
231 | /* got negative remainder, but need positive time */ |
232 | /* back off an extra day to compensate */ |
233 | yearday += (secs/SECS_PER_DAY)-1; |
234 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); |
235 | } |
236 | else { |
237 | yearday += (secs/SECS_PER_DAY); |
238 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); |
239 | } |
240 | } |
241 | else if (secs >= SECS_PER_DAY) { |
242 | yearday += (secs/SECS_PER_DAY); |
243 | secs %= SECS_PER_DAY; |
244 | } |
245 | ptm->tm_hour = secs/SECS_PER_HOUR; |
246 | secs %= SECS_PER_HOUR; |
247 | ptm->tm_min = secs/60; |
248 | secs %= 60; |
249 | ptm->tm_sec += secs; |
250 | /* done with time of day effects */ |
251 | /* |
252 | * The algorithm for yearday has (so far) left it high by 428. |
253 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to |
254 | * bias it by 123 while trying to figure out what year it |
255 | * really represents. Even with this tweak, the reverse |
256 | * translation fails for years before A.D. 0001. |
257 | * It would still fail for Feb 29, but we catch that one below. |
258 | */ |
259 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ |
260 | yearday -= YEAR_ADJUST; |
261 | year = (yearday / DAYS_PER_QCENT) * 400; |
262 | yearday %= DAYS_PER_QCENT; |
263 | odd_cent = yearday / DAYS_PER_CENT; |
264 | year += odd_cent * 100; |
265 | yearday %= DAYS_PER_CENT; |
266 | year += (yearday / DAYS_PER_QYEAR) * 4; |
267 | yearday %= DAYS_PER_QYEAR; |
268 | odd_year = yearday / DAYS_PER_YEAR; |
269 | year += odd_year; |
270 | yearday %= DAYS_PER_YEAR; |
271 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ |
272 | month = 1; |
273 | yearday = 29; |
274 | } |
275 | else { |
276 | yearday += YEAR_ADJUST; /* recover March 1st crock */ |
277 | month = yearday*DAYS_TO_MONTH; |
278 | yearday -= month*MONTH_TO_DAYS; |
279 | /* recover other leap-year adjustment */ |
280 | if (month > 13) { |
281 | month-=14; |
282 | year++; |
283 | } |
284 | else { |
285 | month-=2; |
286 | } |
287 | } |
288 | ptm->tm_year = year - 1900; |
289 | if (yearday) { |
290 | ptm->tm_mday = yearday; |
291 | ptm->tm_mon = month; |
292 | } |
293 | else { |
294 | ptm->tm_mday = 31; |
295 | ptm->tm_mon = month - 1; |
296 | } |
297 | /* re-build yearday based on Jan 1 to get tm_yday */ |
298 | year--; |
299 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; |
300 | yearday += 14*MONTH_TO_DAYS + 1; |
301 | ptm->tm_yday = jday - yearday; |
302 | /* fix tm_wday if not overridden by caller */ |
303 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; |
304 | } |
305 | |
12016aad |
306 | #ifndef HAS_STRPTIME |
307 | /* Assume everyone has strptime except Win32 and QNX4 */ |
308 | # define HAS_STRPTIME 1 |
309 | # if defined(WIN32) || (defined(__QNX__) && defined(__WATCOMC__)) |
310 | # undef HAS_STRPTIME |
311 | # endif |
312 | #endif |
313 | |
314 | #ifndef HAS_STRPTIME |
16433e2b |
315 | #define strncasecmp(x,y,n) strnicmp(x,y,n) |
be8a15fc |
316 | |
317 | #if defined(WIN32) |
0db9c0cf |
318 | #if defined(__BORLANDC__) |
319 | void * __cdecl _EXPFUNC alloca(_SIZE_T __size); |
320 | #else |
16433e2b |
321 | #define alloca _alloca |
be8a15fc |
322 | #endif |
0db9c0cf |
323 | #endif |
124e6c84 |
324 | |
325 | /* strptime copied from freebsd with the following copyright: */ |
326 | /* |
327 | * Copyright (c) 1994 Powerdog Industries. All rights reserved. |
328 | * |
329 | * Redistribution and use in source and binary forms, with or without |
330 | * modification, are permitted provided that the following conditions |
331 | * are met: |
332 | * 1. Redistributions of source code must retain the above copyright |
333 | * notice, this list of conditions and the following disclaimer. |
334 | * 2. Redistributions in binary form must reproduce the above copyright |
335 | * notice, this list of conditions and the following disclaimer |
336 | * in the documentation and/or other materials provided with the |
337 | * distribution. |
338 | * 3. All advertising materials mentioning features or use of this |
339 | * software must display the following acknowledgement: |
340 | * This product includes software developed by Powerdog Industries. |
341 | * 4. The name of Powerdog Industries may not be used to endorse or |
342 | * promote products derived from this software without specific prior |
343 | * written permission. |
344 | * |
345 | * THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``AS IS'' AND ANY |
346 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
347 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
348 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE POWERDOG INDUSTRIES BE |
349 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
350 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
351 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
352 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
353 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
354 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
355 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
356 | */ |
357 | |
358 | #ifndef lint |
359 | #ifndef NOID |
360 | static char copyright[] = |
361 | "@(#) Copyright (c) 1994 Powerdog Industries. All rights reserved."; |
362 | static char sccsid[] = "@(#)strptime.c 0.1 (Powerdog) 94/03/27"; |
363 | #endif /* !defined NOID */ |
364 | #endif /* not lint */ |
be8a15fc |
365 | |
16433e2b |
366 | #include <time.h> |
367 | #include <ctype.h> |
368 | #include <string.h> |
369 | #ifdef _THREAD_SAFE |
370 | #include <pthread.h> |
371 | #include "pthread_private.h" |
372 | #endif /* _THREAD_SAFE */ |
373 | |
12016aad |
374 | static char * _strptime(pTHX_ const char *, const char *, struct tm *); |
16433e2b |
375 | |
376 | #ifdef _THREAD_SAFE |
377 | static struct pthread_mutex _gotgmt_mutexd = PTHREAD_MUTEX_STATIC_INITIALIZER; |
378 | static pthread_mutex_t gotgmt_mutex = &_gotgmt_mutexd; |
379 | #endif |
380 | static int got_GMT; |
381 | |
382 | #define asizeof(a) (sizeof (a) / sizeof ((a)[0])) |
383 | |
384 | struct lc_time_T { |
385 | const char * mon[12]; |
386 | const char * month[12]; |
387 | const char * wday[7]; |
388 | const char * weekday[7]; |
389 | const char * X_fmt; |
390 | const char * x_fmt; |
391 | const char * c_fmt; |
392 | const char * am; |
393 | const char * pm; |
394 | const char * date_fmt; |
395 | const char * alt_month[12]; |
396 | const char * Ef_fmt; |
397 | const char * EF_fmt; |
398 | }; |
399 | |
400 | struct lc_time_T _time_localebuf; |
401 | int _time_using_locale; |
402 | |
403 | const struct lc_time_T _C_time_locale = { |
404 | { |
405 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
406 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
407 | }, { |
408 | "January", "February", "March", "April", "May", "June", |
409 | "July", "August", "September", "October", "November", "December" |
410 | }, { |
411 | "Sun", "Mon", "Tue", "Wed", |
412 | "Thu", "Fri", "Sat" |
413 | }, { |
414 | "Sunday", "Monday", "Tuesday", "Wednesday", |
415 | "Thursday", "Friday", "Saturday" |
416 | }, |
417 | |
418 | /* X_fmt */ |
419 | "%H:%M:%S", |
420 | |
421 | /* |
422 | ** x_fmt |
423 | ** Since the C language standard calls for |
424 | ** "date, using locale's date format," anything goes. |
425 | ** Using just numbers (as here) makes Quakers happier; |
426 | ** it's also compatible with SVR4. |
427 | */ |
428 | "%m/%d/%y", |
429 | |
430 | /* |
431 | ** c_fmt (ctime-compatible) |
432 | ** Not used, just compatibility placeholder. |
433 | */ |
434 | NULL, |
435 | |
436 | /* am */ |
437 | "AM", |
438 | |
439 | /* pm */ |
440 | "PM", |
441 | |
442 | /* date_fmt */ |
443 | "%a %Ef %X %Z %Y", |
444 | |
445 | { |
446 | "January", "February", "March", "April", "May", "June", |
447 | "July", "August", "September", "October", "November", "December" |
448 | }, |
449 | |
450 | /* Ef_fmt |
451 | ** To determine short months / day order |
452 | */ |
453 | "%b %e", |
454 | |
455 | /* EF_fmt |
456 | ** To determine long months / day order |
457 | */ |
458 | "%B %e" |
459 | }; |
460 | |
461 | #define Locale (&_C_time_locale) |
462 | |
463 | static char * |
12016aad |
464 | _strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm) |
16433e2b |
465 | { |
466 | char c; |
467 | const char *ptr; |
468 | int i, |
469 | len; |
470 | int Ealternative, Oalternative; |
471 | |
472 | ptr = fmt; |
473 | while (*ptr != 0) { |
474 | if (*buf == 0) |
475 | break; |
476 | |
477 | c = *ptr++; |
478 | |
479 | if (c != '%') { |
480 | if (isspace((unsigned char)c)) |
481 | while (*buf != 0 && isspace((unsigned char)*buf)) |
482 | buf++; |
483 | else if (c != *buf++) |
484 | return 0; |
485 | continue; |
486 | } |
487 | |
488 | Ealternative = 0; |
489 | Oalternative = 0; |
490 | label: |
491 | c = *ptr++; |
492 | switch (c) { |
493 | case 0: |
494 | case '%': |
495 | if (*buf++ != '%') |
496 | return 0; |
497 | break; |
498 | |
499 | case '+': |
12016aad |
500 | buf = _strptime(aTHX_ buf, Locale->date_fmt, tm); |
16433e2b |
501 | if (buf == 0) |
502 | return 0; |
503 | break; |
504 | |
505 | case 'C': |
506 | if (!isdigit((unsigned char)*buf)) |
507 | return 0; |
508 | |
509 | /* XXX This will break for 3-digit centuries. */ |
510 | len = 2; |
511 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
512 | i *= 10; |
513 | i += *buf - '0'; |
514 | len--; |
515 | } |
516 | if (i < 19) |
517 | return 0; |
518 | |
519 | tm->tm_year = i * 100 - 1900; |
520 | break; |
521 | |
522 | case 'c': |
523 | /* NOTE: c_fmt is intentionally ignored */ |
12016aad |
524 | buf = _strptime(aTHX_ buf, "%a %Ef %T %Y", tm); |
16433e2b |
525 | if (buf == 0) |
526 | return 0; |
527 | break; |
528 | |
529 | case 'D': |
12016aad |
530 | buf = _strptime(aTHX_ buf, "%m/%d/%y", tm); |
16433e2b |
531 | if (buf == 0) |
532 | return 0; |
533 | break; |
534 | |
535 | case 'E': |
536 | if (Ealternative || Oalternative) |
537 | break; |
538 | Ealternative++; |
539 | goto label; |
540 | |
541 | case 'O': |
542 | if (Ealternative || Oalternative) |
543 | break; |
544 | Oalternative++; |
545 | goto label; |
546 | |
547 | case 'F': |
548 | case 'f': |
549 | if (!Ealternative) |
550 | break; |
12016aad |
551 | buf = _strptime(aTHX_ buf, (c == 'f') ? Locale->Ef_fmt : Locale->EF_fmt, tm); |
16433e2b |
552 | if (buf == 0) |
553 | return 0; |
554 | break; |
555 | |
556 | case 'R': |
12016aad |
557 | buf = _strptime(aTHX_ buf, "%H:%M", tm); |
16433e2b |
558 | if (buf == 0) |
559 | return 0; |
560 | break; |
561 | |
562 | case 'r': |
12016aad |
563 | buf = _strptime(aTHX_ buf, "%I:%M:%S %p", tm); |
16433e2b |
564 | if (buf == 0) |
565 | return 0; |
566 | break; |
567 | |
568 | case 'T': |
12016aad |
569 | buf = _strptime(aTHX_ buf, "%H:%M:%S", tm); |
16433e2b |
570 | if (buf == 0) |
571 | return 0; |
572 | break; |
573 | |
574 | case 'X': |
12016aad |
575 | buf = _strptime(aTHX_ buf, Locale->X_fmt, tm); |
16433e2b |
576 | if (buf == 0) |
577 | return 0; |
578 | break; |
579 | |
580 | case 'x': |
12016aad |
581 | buf = _strptime(aTHX_ buf, Locale->x_fmt, tm); |
16433e2b |
582 | if (buf == 0) |
583 | return 0; |
584 | break; |
585 | |
586 | case 'j': |
587 | if (!isdigit((unsigned char)*buf)) |
588 | return 0; |
589 | |
590 | len = 3; |
591 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
592 | i *= 10; |
593 | i += *buf - '0'; |
594 | len--; |
595 | } |
596 | if (i < 1 || i > 366) |
597 | return 0; |
598 | |
599 | tm->tm_yday = i - 1; |
600 | break; |
601 | |
602 | case 'M': |
603 | case 'S': |
604 | if (*buf == 0 || isspace((unsigned char)*buf)) |
605 | break; |
606 | |
607 | if (!isdigit((unsigned char)*buf)) |
608 | return 0; |
609 | |
610 | len = 2; |
611 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
612 | i *= 10; |
613 | i += *buf - '0'; |
614 | len--; |
615 | } |
616 | |
617 | if (c == 'M') { |
618 | if (i > 59) |
619 | return 0; |
620 | tm->tm_min = i; |
621 | } else { |
622 | if (i > 60) |
623 | return 0; |
624 | tm->tm_sec = i; |
625 | } |
626 | |
627 | if (*buf != 0 && isspace((unsigned char)*buf)) |
628 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
629 | ptr++; |
630 | break; |
631 | |
632 | case 'H': |
633 | case 'I': |
634 | case 'k': |
635 | case 'l': |
636 | /* |
637 | * Of these, %l is the only specifier explicitly |
638 | * documented as not being zero-padded. However, |
639 | * there is no harm in allowing zero-padding. |
640 | * |
641 | * XXX The %l specifier may gobble one too many |
642 | * digits if used incorrectly. |
643 | */ |
644 | if (!isdigit((unsigned char)*buf)) |
645 | return 0; |
646 | |
647 | len = 2; |
648 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
649 | i *= 10; |
650 | i += *buf - '0'; |
651 | len--; |
652 | } |
653 | if (c == 'H' || c == 'k') { |
654 | if (i > 23) |
655 | return 0; |
656 | } else if (i > 12) |
657 | return 0; |
658 | |
659 | tm->tm_hour = i; |
660 | |
661 | if (*buf != 0 && isspace((unsigned char)*buf)) |
662 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
663 | ptr++; |
664 | break; |
665 | |
666 | case 'p': |
667 | /* |
668 | * XXX This is bogus if parsed before hour-related |
669 | * specifiers. |
670 | */ |
671 | len = strlen(Locale->am); |
672 | if (strncasecmp(buf, Locale->am, len) == 0) { |
673 | if (tm->tm_hour > 12) |
674 | return 0; |
675 | if (tm->tm_hour == 12) |
676 | tm->tm_hour = 0; |
677 | buf += len; |
678 | break; |
679 | } |
680 | |
681 | len = strlen(Locale->pm); |
682 | if (strncasecmp(buf, Locale->pm, len) == 0) { |
683 | if (tm->tm_hour > 12) |
684 | return 0; |
685 | if (tm->tm_hour != 12) |
686 | tm->tm_hour += 12; |
687 | buf += len; |
688 | break; |
689 | } |
690 | |
691 | return 0; |
692 | |
693 | case 'A': |
694 | case 'a': |
695 | for (i = 0; i < asizeof(Locale->weekday); i++) { |
696 | if (c == 'A') { |
697 | len = strlen(Locale->weekday[i]); |
698 | if (strncasecmp(buf, |
699 | Locale->weekday[i], |
700 | len) == 0) |
701 | break; |
702 | } else { |
703 | len = strlen(Locale->wday[i]); |
704 | if (strncasecmp(buf, |
705 | Locale->wday[i], |
706 | len) == 0) |
707 | break; |
708 | } |
709 | } |
710 | if (i == asizeof(Locale->weekday)) |
711 | return 0; |
712 | |
713 | tm->tm_wday = i; |
714 | buf += len; |
715 | break; |
716 | |
717 | case 'U': |
718 | case 'W': |
719 | /* |
720 | * XXX This is bogus, as we can not assume any valid |
721 | * information present in the tm structure at this |
722 | * point to calculate a real value, so just check the |
723 | * range for now. |
724 | */ |
725 | if (!isdigit((unsigned char)*buf)) |
726 | return 0; |
727 | |
728 | len = 2; |
729 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
730 | i *= 10; |
731 | i += *buf - '0'; |
732 | len--; |
733 | } |
734 | if (i > 53) |
735 | return 0; |
736 | |
737 | if (*buf != 0 && isspace((unsigned char)*buf)) |
738 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
739 | ptr++; |
740 | break; |
741 | |
742 | case 'w': |
743 | if (!isdigit((unsigned char)*buf)) |
744 | return 0; |
745 | |
746 | i = *buf - '0'; |
747 | if (i > 6) |
748 | return 0; |
749 | |
750 | tm->tm_wday = i; |
751 | |
752 | if (*buf != 0 && isspace((unsigned char)*buf)) |
753 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
754 | ptr++; |
755 | break; |
756 | |
757 | case 'd': |
758 | case 'e': |
759 | /* |
760 | * The %e specifier is explicitly documented as not |
761 | * being zero-padded but there is no harm in allowing |
762 | * such padding. |
763 | * |
764 | * XXX The %e specifier may gobble one too many |
765 | * digits if used incorrectly. |
766 | */ |
767 | if (!isdigit((unsigned char)*buf)) |
768 | return 0; |
769 | |
770 | len = 2; |
771 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
772 | i *= 10; |
773 | i += *buf - '0'; |
774 | len--; |
775 | } |
776 | if (i > 31) |
777 | return 0; |
778 | |
779 | tm->tm_mday = i; |
780 | |
781 | if (*buf != 0 && isspace((unsigned char)*buf)) |
782 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
783 | ptr++; |
784 | break; |
785 | |
786 | case 'B': |
787 | case 'b': |
788 | case 'h': |
789 | for (i = 0; i < asizeof(Locale->month); i++) { |
790 | if (Oalternative) { |
791 | if (c == 'B') { |
792 | len = strlen(Locale->alt_month[i]); |
793 | if (strncasecmp(buf, |
794 | Locale->alt_month[i], |
795 | len) == 0) |
796 | break; |
797 | } |
798 | } else { |
799 | if (c == 'B') { |
800 | len = strlen(Locale->month[i]); |
801 | if (strncasecmp(buf, |
802 | Locale->month[i], |
803 | len) == 0) |
804 | break; |
805 | } else { |
806 | len = strlen(Locale->mon[i]); |
807 | if (strncasecmp(buf, |
808 | Locale->mon[i], |
809 | len) == 0) |
810 | break; |
811 | } |
812 | } |
813 | } |
814 | if (i == asizeof(Locale->month)) |
815 | return 0; |
816 | |
817 | tm->tm_mon = i; |
818 | buf += len; |
819 | break; |
820 | |
821 | case 'm': |
822 | if (!isdigit((unsigned char)*buf)) |
823 | return 0; |
824 | |
825 | len = 2; |
826 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
827 | i *= 10; |
828 | i += *buf - '0'; |
829 | len--; |
830 | } |
831 | if (i < 1 || i > 12) |
832 | return 0; |
833 | |
834 | tm->tm_mon = i - 1; |
835 | |
836 | if (*buf != 0 && isspace((unsigned char)*buf)) |
837 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
838 | ptr++; |
839 | break; |
840 | |
841 | case 'Y': |
842 | case 'y': |
843 | if (*buf == 0 || isspace((unsigned char)*buf)) |
844 | break; |
845 | |
846 | if (!isdigit((unsigned char)*buf)) |
847 | return 0; |
848 | |
849 | len = (c == 'Y') ? 4 : 2; |
850 | for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { |
851 | i *= 10; |
852 | i += *buf - '0'; |
853 | len--; |
854 | } |
855 | if (c == 'Y') |
856 | i -= 1900; |
857 | if (c == 'y' && i < 69) |
858 | i += 100; |
859 | if (i < 0) |
860 | return 0; |
861 | |
862 | tm->tm_year = i; |
863 | |
864 | if (*buf != 0 && isspace((unsigned char)*buf)) |
865 | while (*ptr != 0 && !isspace((unsigned char)*ptr)) |
866 | ptr++; |
867 | break; |
868 | |
869 | case 'Z': |
870 | { |
871 | const char *cp; |
872 | char *zonestr; |
873 | |
874 | for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp) |
875 | {/*empty*/} |
876 | if (cp - buf) { |
d56c6e85 |
877 | zonestr = (char *)alloca(cp - buf + 1); |
16433e2b |
878 | strncpy(zonestr, buf, cp - buf); |
879 | zonestr[cp - buf] = '\0'; |
12016aad |
880 | my_tzset(aTHX); |
16433e2b |
881 | if (0 == strcmp(zonestr, "GMT")) { |
882 | got_GMT = 1; |
883 | } else { |
884 | return 0; |
885 | } |
886 | buf += cp - buf; |
887 | } |
888 | } |
889 | break; |
890 | } |
891 | } |
892 | return (char *)buf; |
893 | } |
894 | |
895 | |
896 | char * |
12016aad |
897 | strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm) |
16433e2b |
898 | { |
899 | char *ret; |
900 | |
901 | #ifdef _THREAD_SAFE |
902 | pthread_mutex_lock(&gotgmt_mutex); |
903 | #endif |
904 | |
905 | got_GMT = 0; |
12016aad |
906 | ret = _strptime(aTHX_ buf, fmt, tm); |
16433e2b |
907 | |
908 | #ifdef _THREAD_SAFE |
909 | pthread_mutex_unlock(&gotgmt_mutex); |
910 | #endif |
911 | |
912 | return ret; |
913 | } |
914 | |
12016aad |
915 | #endif /* !HAS_STRPTIME */ |
16433e2b |
916 | |
917 | MODULE = Time::Piece PACKAGE = Time::Piece |
918 | |
919 | PROTOTYPES: ENABLE |
920 | |
9331e88f |
921 | void |
16433e2b |
922 | _strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1) |
923 | char * fmt |
924 | int sec |
925 | int min |
926 | int hour |
927 | int mday |
928 | int mon |
929 | int year |
930 | int wday |
931 | int yday |
932 | int isdst |
933 | CODE: |
934 | { |
935 | char tmpbuf[128]; |
936 | struct tm mytm; |
937 | int len; |
938 | memset(&mytm, 0, sizeof(mytm)); |
939 | my_init_tm(&mytm); /* XXX workaround - see my_init_tm() above */ |
940 | mytm.tm_sec = sec; |
941 | mytm.tm_min = min; |
942 | mytm.tm_hour = hour; |
943 | mytm.tm_mday = mday; |
944 | mytm.tm_mon = mon; |
945 | mytm.tm_year = year; |
946 | mytm.tm_wday = wday; |
947 | mytm.tm_yday = yday; |
948 | mytm.tm_isdst = isdst; |
949 | my_mini_mktime(&mytm); |
950 | len = strftime(tmpbuf, sizeof tmpbuf, fmt, &mytm); |
951 | /* |
952 | ** The following is needed to handle to the situation where |
953 | ** tmpbuf overflows. Basically we want to allocate a buffer |
954 | ** and try repeatedly. The reason why it is so complicated |
955 | ** is that getting a return value of 0 from strftime can indicate |
956 | ** one of the following: |
957 | ** 1. buffer overflowed, |
958 | ** 2. illegal conversion specifier, or |
959 | ** 3. the format string specifies nothing to be returned(not |
960 | ** an error). This could be because format is an empty string |
961 | ** or it specifies %p that yields an empty string in some locale. |
962 | ** If there is a better way to make it portable, go ahead by |
963 | ** all means. |
964 | */ |
965 | if ((len > 0 && len < sizeof(tmpbuf)) || (len == 0 && *fmt == '\0')) |
966 | ST(0) = sv_2mortal(newSVpv(tmpbuf, len)); |
967 | else { |
968 | /* Possibly buf overflowed - try again with a bigger buf */ |
969 | int fmtlen = strlen(fmt); |
970 | int bufsize = fmtlen + sizeof(tmpbuf); |
971 | char* buf; |
972 | int buflen; |
973 | |
974 | New(0, buf, bufsize, char); |
975 | while (buf) { |
976 | buflen = strftime(buf, bufsize, fmt, &mytm); |
977 | if (buflen > 0 && buflen < bufsize) |
978 | break; |
979 | /* heuristic to prevent out-of-memory errors */ |
980 | if (bufsize > 100*fmtlen) { |
981 | Safefree(buf); |
982 | buf = NULL; |
983 | break; |
984 | } |
985 | bufsize *= 2; |
986 | Renew(buf, bufsize, char); |
987 | } |
988 | if (buf) { |
989 | ST(0) = sv_2mortal(newSVpv(buf, buflen)); |
990 | Safefree(buf); |
991 | } |
992 | else |
993 | ST(0) = sv_2mortal(newSVpv(tmpbuf, len)); |
994 | } |
995 | } |
996 | |
997 | void |
998 | _tzset() |
999 | PPCODE: |
12016aad |
1000 | my_tzset(aTHX); |
16433e2b |
1001 | |
1002 | |
1003 | void |
1004 | _strptime ( string, format ) |
1005 | char * string |
1006 | char * format |
1007 | PREINIT: |
16433e2b |
1008 | struct tm mytm; |
1009 | time_t t; |
1010 | char * remainder; |
16433e2b |
1011 | PPCODE: |
1012 | t = 0; |
1013 | mytm = *gmtime(&t); |
12016aad |
1014 | #ifdef HAS_STRPTIME |
16433e2b |
1015 | remainder = (char *)strptime(string, format, &mytm); |
12016aad |
1016 | #else |
1017 | remainder = (char *)strptime(aTHX_ string, format, &mytm); |
1018 | #endif |
16433e2b |
1019 | if (remainder == NULL) { |
1020 | croak("Error parsing time"); |
1021 | } |
16433e2b |
1022 | if (*remainder != '\0') { |
1023 | warn("garbage at end of string in strptime: %s", remainder); |
1024 | } |
1025 | |
1026 | my_mini_mktime(&mytm); |
1027 | |
1028 | /* warn("tm: %d-%d-%d %d:%d:%d\n", mytm.tm_year, mytm.tm_mon, mytm.tm_mday, mytm.tm_hour, mytm.tm_min, mytm.tm_sec); */ |
1029 | |
1030 | EXTEND(SP, 11); |
1031 | PUSHs(sv_2mortal(newSViv(mytm.tm_sec))); |
1032 | PUSHs(sv_2mortal(newSViv(mytm.tm_min))); |
1033 | PUSHs(sv_2mortal(newSViv(mytm.tm_hour))); |
1034 | PUSHs(sv_2mortal(newSViv(mytm.tm_mday))); |
1035 | PUSHs(sv_2mortal(newSViv(mytm.tm_mon))); |
1036 | PUSHs(sv_2mortal(newSViv(mytm.tm_year))); |
1037 | PUSHs(sv_2mortal(newSViv(mytm.tm_wday))); |
1038 | PUSHs(sv_2mortal(newSViv(mytm.tm_yday))); |
1039 | /* isdst */ |
1040 | PUSHs(sv_2mortal(newSViv(0))); |
1041 | /* epoch */ |
1042 | PUSHs(sv_2mortal(newSViv(0))); |
1043 | /* islocal */ |
1044 | PUSHs(sv_2mortal(newSViv(0))); |
3df1a9e2 |
1045 | |
1046 | void |
1047 | _mini_mktime(int sec, int min, int hour, int mday, int mon, int year) |
1048 | PREINIT: |
1049 | struct tm mytm; |
1050 | time_t t; |
1051 | PPCODE: |
1052 | t = 0; |
1053 | mytm = *gmtime(&t); |
1054 | |
1055 | mytm.tm_sec = sec; |
1056 | mytm.tm_min = min; |
1057 | mytm.tm_hour = hour; |
1058 | mytm.tm_mday = mday; |
1059 | mytm.tm_mon = mon; |
1060 | mytm.tm_year = year; |
1061 | |
1062 | my_mini_mktime(&mytm); |
1063 | |
1064 | EXTEND(SP, 11); |
1065 | PUSHs(sv_2mortal(newSViv(mytm.tm_sec))); |
1066 | PUSHs(sv_2mortal(newSViv(mytm.tm_min))); |
1067 | PUSHs(sv_2mortal(newSViv(mytm.tm_hour))); |
1068 | PUSHs(sv_2mortal(newSViv(mytm.tm_mday))); |
1069 | PUSHs(sv_2mortal(newSViv(mytm.tm_mon))); |
1070 | PUSHs(sv_2mortal(newSViv(mytm.tm_year))); |
1071 | PUSHs(sv_2mortal(newSViv(mytm.tm_wday))); |
1072 | PUSHs(sv_2mortal(newSViv(mytm.tm_yday))); |
1073 | /* isdst */ |
1074 | PUSHs(sv_2mortal(newSViv(0))); |
1075 | /* epoch */ |
1076 | PUSHs(sv_2mortal(newSViv(0))); |
1077 | /* islocal */ |
1078 | PUSHs(sv_2mortal(newSViv(0))); |