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ccadf7b5 | 1 | /* Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
c4d6f155 RM |
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, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
18 | ||
ccadf7b5 UD |
19 | #ifdef HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
c4d6f155 | 22 | |
ccadf7b5 UD |
23 | #ifdef _LIBC |
24 | # define USE_IN_EXTENDED_LOCALE_MODEL 1 | |
25 | # define HAVE_LIMITS_H 1 | |
26 | # define HAVE_MBLEN 1 | |
27 | # define HAVE_MBRLEN 1 | |
28 | # define HAVE_STRUCT_ERA_ENTRY 1 | |
29 | # define HAVE_TM_GMTOFF 1 | |
30 | # define HAVE_TM_ZONE 1 | |
31 | # define HAVE_TZNAME 1 | |
32 | # define HAVE_TZSET 1 | |
33 | # define MULTIBYTE_IS_FORMAT_SAFE 1 | |
34 | # define STDC_HEADERS 1 | |
35 | # include "../locale/localeinfo.h" | |
36 | #endif | |
37 | ||
38 | #if defined emacs && !defined HAVE_BCOPY | |
39 | # define HAVE_MEMCPY 1 | |
40 | #endif | |
41 | ||
42 | #include <ctype.h> | |
43 | #include <sys/types.h> /* Some systems define `time_t' here. */ | |
44 | ||
45 | #ifdef TIME_WITH_SYS_TIME | |
46 | # include <sys/time.h> | |
47 | # include <time.h> | |
48 | #else | |
49 | # ifdef HAVE_SYS_TIME_H | |
50 | # include <sys/time.h> | |
51 | # else | |
52 | # include <time.h> | |
53 | # endif | |
54 | #endif | |
55 | #if HAVE_TZNAME | |
56 | extern char *tzname[]; | |
57 | #endif | |
58 | ||
59 | /* Do multibyte processing if multibytes are supported, unless | |
60 | multibyte sequences are safe in formats. Multibyte sequences are | |
61 | safe if they cannot contain byte sequences that look like format | |
62 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
63 | encoding, which is safe for formats, but strftime.c can be used | |
64 | with other C libraries that use unsafe encodings. */ | |
65 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
66 | ||
67 | #if DO_MULTIBYTE | |
68 | # if HAVE_MBRLEN | |
69 | # include <wchar.h> | |
70 | # else | |
71 | /* Simulate mbrlen with mblen as best we can. */ | |
72 | # define mbstate_t int | |
73 | # define mbrlen(s, n, ps) mblen (s, n) | |
74 | # define mbsinit(ps) (*(ps) == 0) | |
75 | # endif | |
76 | static const mbstate_t mbstate_zero; | |
77 | #endif | |
78 | ||
79 | #if HAVE_LIMITS_H | |
80 | # include <limits.h> | |
81 | #endif | |
82 | ||
83 | #if STDC_HEADERS | |
84 | # include <stddef.h> | |
85 | # include <stdlib.h> | |
86 | # include <string.h> | |
87 | #else | |
88 | # ifndef HAVE_MEMCPY | |
89 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) | |
90 | # endif | |
91 | #endif | |
92 | ||
93 | #ifdef COMPILE_WIDE | |
94 | # include <endian.h> | |
95 | # define CHAR_T wchar_t | |
96 | # define UCHAR_T unsigned int | |
97 | # define L_(Str) L##Str | |
98 | # define NLW(Sym) _NL_W##Sym | |
99 | ||
100 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
101 | # define STRLEN(s) __wcslen (s) | |
102 | ||
103 | #else | |
104 | # define CHAR_T char | |
105 | # define UCHAR_T unsigned char | |
106 | # define L_(Str) Str | |
107 | # define NLW(Sym) Sym | |
108 | ||
109 | # if !defined STDC_HEADERS && !defined HAVE_MEMCPY | |
110 | # define MEMCPY(d, s, n) bcopy ((s), (d), (n)) | |
111 | # else | |
112 | # define MEMCPY(d, s, n) memcpy ((d), (s), (n)) | |
113 | # endif | |
114 | # define STRLEN(s) strlen (s) | |
115 | ||
116 | # ifdef _LIBC | |
117 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) | |
118 | # else | |
119 | # ifndef HAVE_MEMPCPY | |
120 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) | |
121 | # endif | |
122 | # endif | |
123 | #endif | |
124 | ||
125 | #ifndef __P | |
126 | # if defined __GNUC__ || (defined __STDC__ && __STDC__) | |
127 | # define __P(args) args | |
128 | # else | |
129 | # define __P(args) () | |
130 | # endif /* GCC. */ | |
131 | #endif /* Not __P. */ | |
132 | ||
133 | #ifndef PTR | |
134 | # ifdef __STDC__ | |
135 | # define PTR void * | |
136 | # else | |
137 | # define PTR char * | |
138 | # endif | |
139 | #endif | |
140 | ||
141 | #ifndef CHAR_BIT | |
142 | # define CHAR_BIT 8 | |
143 | #endif | |
144 | ||
145 | #ifndef NULL | |
146 | # define NULL 0 | |
147 | #endif | |
148 | ||
149 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
150 | ||
151 | /* Bound on length of the string representing an integer value of type t. | |
152 | Subtract one for the sign bit if t is signed; | |
153 | 302 / 1000 is log10 (2) rounded up; | |
154 | add one for integer division truncation; | |
155 | add one more for a minus sign if t is signed. */ | |
156 | #define INT_STRLEN_BOUND(t) \ | |
157 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) | |
158 | ||
159 | #define TM_YEAR_BASE 1900 | |
160 | ||
161 | #ifndef __isleap | |
162 | /* Nonzero if YEAR is a leap year (every 4 years, | |
163 | except every 100th isn't, and every 400th is). */ | |
164 | # define __isleap(year) \ | |
165 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) | |
166 | #endif | |
167 | ||
168 | ||
169 | #ifdef _LIBC | |
170 | # define tzname __tzname | |
171 | # define tzset __tzset | |
172 | #endif | |
173 | ||
174 | #if !HAVE_TM_GMTOFF | |
175 | /* Portable standalone applications should supply a "time_r.h" that | |
176 | declares a POSIX-compliant localtime_r, for the benefit of older | |
177 | implementations that lack localtime_r or have a nonstandard one. | |
178 | Similarly for gmtime_r. See the gnulib time_r module for one way | |
179 | to implement this. */ | |
180 | # include "time_r.h" | |
181 | # undef __gmtime_r | |
182 | # undef __localtime_r | |
183 | # define __gmtime_r gmtime_r | |
184 | # define __localtime_r localtime_r | |
185 | #endif | |
186 | ||
187 | ||
188 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC | |
189 | /* Some systems lack the `memset' function and we don't want to | |
190 | introduce additional dependencies. */ | |
191 | /* The SGI compiler reportedly barfs on the trailing null | |
192 | if we use a string constant as the initializer. 28 June 1997, rms. */ | |
193 | static const CHAR_T spaces[16] = /* " " */ | |
194 | { | |
195 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '), | |
196 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ') | |
197 | }; | |
198 | static const CHAR_T zeroes[16] = /* "0000000000000000" */ | |
199 | { | |
200 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'), | |
201 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0') | |
202 | }; | |
203 | ||
204 | # define memset_space(P, Len) \ | |
205 | do { \ | |
206 | int _len = (Len); \ | |
207 | \ | |
208 | do \ | |
209 | { \ | |
210 | int _this = _len > 16 ? 16 : _len; \ | |
211 | (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \ | |
212 | _len -= _this; \ | |
213 | } \ | |
214 | while (_len > 0); \ | |
215 | } while (0) | |
216 | ||
217 | # define memset_zero(P, Len) \ | |
218 | do { \ | |
219 | int _len = (Len); \ | |
220 | \ | |
221 | do \ | |
222 | { \ | |
223 | int _this = _len > 16 ? 16 : _len; \ | |
224 | (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \ | |
225 | _len -= _this; \ | |
226 | } \ | |
227 | while (_len > 0); \ | |
228 | } while (0) | |
229 | #else | |
230 | # ifdef COMPILE_WIDE | |
231 | # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len)) | |
232 | # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len)) | |
233 | # else | |
234 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) | |
235 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) | |
236 | # endif | |
237 | #endif | |
238 | ||
239 | #define add(n, f) \ | |
240 | do \ | |
241 | { \ | |
242 | int _n = (n); \ | |
243 | int _delta = width - _n; \ | |
244 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
245 | if ((size_t) _incr >= maxsize - i) \ | |
246 | return 0; \ | |
247 | if (p) \ | |
248 | { \ | |
249 | if (_delta > 0) \ | |
250 | { \ | |
251 | if (pad == L_('0')) \ | |
252 | memset_zero (p, _delta); \ | |
253 | else \ | |
254 | memset_space (p, _delta); \ | |
255 | } \ | |
256 | f; \ | |
257 | p += _n; \ | |
258 | } \ | |
259 | i += _incr; \ | |
260 | } while (0) | |
261 | ||
262 | #define cpy(n, s) \ | |
263 | add ((n), \ | |
264 | if (to_lowcase) \ | |
265 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ | |
266 | else if (to_uppcase) \ | |
267 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ | |
268 | else \ | |
269 | MEMCPY ((PTR) p, (const PTR) (s), _n)) | |
270 | ||
271 | #ifdef COMPILE_WIDE | |
272 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL | |
273 | # undef __mbsrtowcs_l | |
274 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) | |
275 | # endif | |
276 | # define widen(os, ws, l) \ | |
277 | { \ | |
278 | mbstate_t __st; \ | |
279 | const char *__s = os; \ | |
280 | memset (&__st, '\0', sizeof (__st)); \ | |
281 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ | |
282 | ws = alloca ((l + 1) * sizeof (wchar_t)); \ | |
283 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ | |
284 | } | |
285 | #endif | |
286 | ||
287 | ||
288 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
289 | /* We use this code also for the extended locale handling where the | |
290 | function gets as an additional argument the locale which has to be | |
291 | used. To access the values we have to redefine the _NL_CURRENT | |
292 | macro. */ | |
293 | # define strftime __strftime_l | |
294 | # define wcsftime __wcsftime_l | |
295 | # undef _NL_CURRENT | |
296 | # define _NL_CURRENT(category, item) \ | |
297 | (current->values[_NL_ITEM_INDEX (item)].string) | |
298 | # define LOCALE_PARAM , loc | |
299 | # define LOCALE_ARG , loc | |
300 | # define LOCALE_PARAM_DECL __locale_t loc; | |
301 | # define LOCALE_PARAM_PROTO , __locale_t loc | |
302 | # define HELPER_LOCALE_ARG , current | |
303 | #else | |
304 | # define LOCALE_PARAM | |
305 | # define LOCALE_PARAM_PROTO | |
306 | # define LOCALE_ARG | |
307 | # define LOCALE_PARAM_DECL | |
308 | # ifdef _LIBC | |
309 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) | |
310 | # else | |
311 | # define HELPER_LOCALE_ARG | |
312 | # endif | |
313 | #endif | |
314 | ||
315 | #ifdef COMPILE_WIDE | |
316 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
317 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) | |
318 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) | |
319 | # else | |
320 | # define TOUPPER(Ch, L) towupper (Ch) | |
321 | # define TOLOWER(Ch, L) towlower (Ch) | |
322 | # endif | |
323 | #else | |
324 | # ifdef _LIBC | |
325 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
326 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) | |
327 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) | |
328 | # else | |
329 | # define TOUPPER(Ch, L) toupper (Ch) | |
330 | # define TOLOWER(Ch, L) tolower (Ch) | |
331 | # endif | |
332 | # else | |
333 | # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch)) | |
334 | # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
335 | # endif | |
336 | #endif | |
337 | /* We don't use `isdigit' here since the locale dependent | |
338 | interpretation is not what we want here. We only need to accept | |
339 | the arabic digits in the ASCII range. One day there is perhaps a | |
340 | more reliable way to accept other sets of digits. */ | |
341 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) | |
342 | ||
343 | static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src, | |
344 | size_t len LOCALE_PARAM_PROTO)); | |
345 | ||
346 | static CHAR_T * | |
347 | memcpy_lowcase (dest, src, len LOCALE_PARAM) | |
348 | CHAR_T *dest; | |
349 | const CHAR_T *src; | |
350 | size_t len; | |
351 | LOCALE_PARAM_DECL | |
352 | { | |
353 | while (len-- > 0) | |
354 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); | |
355 | return dest; | |
356 | } | |
357 | ||
358 | static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src, | |
359 | size_t len LOCALE_PARAM_PROTO)); | |
360 | ||
361 | static CHAR_T * | |
362 | memcpy_uppcase (dest, src, len LOCALE_PARAM) | |
363 | CHAR_T *dest; | |
364 | const CHAR_T *src; | |
365 | size_t len; | |
366 | LOCALE_PARAM_DECL | |
367 | { | |
368 | while (len-- > 0) | |
369 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); | |
370 | return dest; | |
371 | } | |
372 | ||
373 | ||
374 | #if ! HAVE_TM_GMTOFF | |
375 | /* Yield the difference between *A and *B, | |
376 | measured in seconds, ignoring leap seconds. */ | |
377 | # define tm_diff ftime_tm_diff | |
378 | static int tm_diff __P ((const struct tm *, const struct tm *)); | |
379 | static int | |
380 | tm_diff (a, b) | |
381 | const struct tm *a; | |
382 | const struct tm *b; | |
383 | { | |
384 | /* Compute intervening leap days correctly even if year is negative. | |
385 | Take care to avoid int overflow in leap day calculations, | |
386 | but it's OK to assume that A and B are close to each other. */ | |
387 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
388 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
389 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
390 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
391 | int a400 = a100 >> 2; | |
392 | int b400 = b100 >> 2; | |
393 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
394 | int years = a->tm_year - b->tm_year; | |
395 | int days = (365 * years + intervening_leap_days | |
396 | + (a->tm_yday - b->tm_yday)); | |
397 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
398 | + (a->tm_min - b->tm_min)) | |
399 | + (a->tm_sec - b->tm_sec)); | |
400 | } | |
401 | #endif /* ! HAVE_TM_GMTOFF */ | |
402 | ||
403 | ||
404 | ||
405 | /* The number of days from the first day of the first ISO week of this | |
406 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
407 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
408 | be as small as YDAY_MINIMUM. */ | |
409 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
410 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
411 | #define YDAY_MINIMUM (-366) | |
412 | static int iso_week_days __P ((int, int)); | |
413 | #ifdef __GNUC__ | |
414 | __inline__ | |
415 | #endif | |
416 | static int | |
417 | iso_week_days (yday, wday) | |
418 | int yday; | |
419 | int wday; | |
420 | { | |
421 | /* Add enough to the first operand of % to make it nonnegative. */ | |
422 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
423 | return (yday | |
424 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 | |
425 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
426 | } | |
427 | ||
428 | ||
429 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) | |
430 | static CHAR_T const weekday_name[][10] = | |
431 | { | |
432 | L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"), | |
433 | L_("Thursday"), L_("Friday"), L_("Saturday") | |
434 | }; | |
435 | static CHAR_T const month_name[][10] = | |
436 | { | |
437 | L_("January"), L_("February"), L_("March"), L_("April"), L_("May"), | |
438 | L_("June"), L_("July"), L_("August"), L_("September"), L_("October"), | |
439 | L_("November"), L_("December") | |
440 | }; | |
441 | #endif | |
442 | ||
443 | ||
444 | #ifdef emacs | |
445 | # define my_strftime emacs_strftimeu | |
446 | # define ut_argument , ut | |
447 | # define ut_argument_spec int ut; | |
448 | # define ut_argument_spec_iso , int ut | |
449 | #else | |
450 | # ifdef COMPILE_WIDE | |
451 | # define my_strftime wcsftime | |
452 | # define nl_get_alt_digit _nl_get_walt_digit | |
453 | # else | |
454 | # define my_strftime strftime | |
455 | # define nl_get_alt_digit _nl_get_alt_digit | |
456 | # endif | |
457 | # define ut_argument | |
458 | # define ut_argument_spec | |
459 | # define ut_argument_spec_iso | |
460 | /* We don't have this information in general. */ | |
461 | # define ut 0 | |
462 | #endif | |
463 | ||
464 | #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET | |
465 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. | |
466 | Work around this bug by copying *tp before it might be munged. */ | |
467 | size_t _strftime_copytm __P ((char *, size_t, const char *, | |
468 | const struct tm * ut_argument_spec_iso)); | |
469 | size_t | |
470 | my_strftime (s, maxsize, format, tp ut_argument) | |
471 | CHAR_T *s; | |
472 | size_t maxsize; | |
473 | const CHAR_T *format; | |
474 | const struct tm *tp; | |
475 | ut_argument_spec | |
476 | { | |
477 | struct tm tmcopy; | |
478 | tmcopy = *tp; | |
479 | return _strftime_copytm (s, maxsize, format, &tmcopy ut_argument); | |
480 | } | |
481 | # undef my_strftime | |
482 | # define my_strftime _strftime_copytm | |
483 | #endif | |
484 | ||
485 | ||
486 | /* Write information from TP into S according to the format | |
487 | string FORMAT, writing no more that MAXSIZE characters | |
488 | (including the terminating '\0') and returning number of | |
489 | characters written. If S is NULL, nothing will be written | |
490 | anywhere, so to determine how many characters would be | |
491 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
492 | size_t | |
493 | my_strftime (s, maxsize, format, tp ut_argument LOCALE_PARAM) | |
494 | CHAR_T *s; | |
495 | size_t maxsize; | |
496 | const CHAR_T *format; | |
497 | const struct tm *tp; | |
498 | ut_argument_spec | |
499 | LOCALE_PARAM_DECL | |
500 | { | |
501 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
502 | struct locale_data *const current = loc->__locales[LC_TIME]; | |
503 | #endif | |
504 | ||
505 | int hour12 = tp->tm_hour; | |
506 | #ifdef _NL_CURRENT | |
507 | /* We cannot make the following values variables since we must delay | |
508 | the evaluation of these values until really needed since some | |
509 | expressions might not be valid in every situation. The `struct tm' | |
510 | might be generated by a strptime() call that initialized | |
511 | only a few elements. Dereference the pointers only if the format | |
512 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
513 | # define a_wkday \ | |
514 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
515 | # define f_wkday \ | |
516 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
517 | # define a_month \ | |
518 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
519 | # define f_month \ | |
520 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
521 | # define ampm \ | |
522 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ | |
523 | ? NLW(PM_STR) : NLW(AM_STR))) | |
524 | ||
525 | # define aw_len STRLEN (a_wkday) | |
526 | # define am_len STRLEN (a_month) | |
527 | # define ap_len STRLEN (ampm) | |
528 | #else | |
529 | # if !HAVE_STRFTIME | |
530 | # define f_wkday (weekday_name[tp->tm_wday]) | |
531 | # define f_month (month_name[tp->tm_mon]) | |
532 | # define a_wkday f_wkday | |
533 | # define a_month f_month | |
534 | # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11)) | |
535 | ||
536 | size_t aw_len = 3; | |
537 | size_t am_len = 3; | |
538 | size_t ap_len = 2; | |
539 | # endif | |
540 | #endif | |
541 | const char *zone; | |
542 | size_t i = 0; | |
543 | CHAR_T *p = s; | |
544 | const CHAR_T *f; | |
545 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
546 | const char *format_end = NULL; | |
547 | #endif | |
548 | ||
549 | zone = NULL; | |
550 | #if HAVE_TM_ZONE | |
551 | /* The POSIX test suite assumes that setting | |
552 | the environment variable TZ to a new value before calling strftime() | |
553 | will influence the result (the %Z format) even if the information in | |
554 | TP is computed with a totally different time zone. | |
555 | This is bogus: though POSIX allows bad behavior like this, | |
556 | POSIX does not require it. Do the right thing instead. */ | |
557 | zone = (const char *) tp->tm_zone; | |
558 | #endif | |
559 | #if HAVE_TZNAME | |
560 | if (ut) | |
561 | { | |
562 | if (! (zone && *zone)) | |
563 | zone = "GMT"; | |
564 | } | |
565 | else | |
566 | { | |
567 | /* POSIX.1 requires that local time zone information is used as | |
568 | though strftime called tzset. */ | |
569 | # if HAVE_TZSET | |
570 | tzset (); | |
571 | # endif | |
572 | } | |
573 | #endif | |
574 | ||
575 | if (hour12 > 12) | |
576 | hour12 -= 12; | |
577 | else | |
578 | if (hour12 == 0) | |
579 | hour12 = 12; | |
580 | ||
581 | for (f = format; *f != '\0'; ++f) | |
582 | { | |
583 | int pad = 0; /* Padding for number ('-', '_', or 0). */ | |
584 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
585 | int digits; /* Max digits for numeric format. */ | |
586 | int number_value; /* Numeric value to be printed. */ | |
587 | int negative_number; /* 1 if the number is negative. */ | |
588 | const CHAR_T *subfmt; | |
589 | CHAR_T *bufp; | |
590 | CHAR_T buf[1 + (sizeof (int) < sizeof (time_t) | |
591 | ? INT_STRLEN_BOUND (time_t) | |
592 | : INT_STRLEN_BOUND (int))]; | |
593 | int width = -1; | |
594 | int to_lowcase = 0; | |
595 | int to_uppcase = 0; | |
596 | int change_case = 0; | |
597 | int format_char; | |
598 | ||
599 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
600 | switch (*f) | |
601 | { | |
602 | case L_('%'): | |
603 | break; | |
604 | ||
605 | case L_('\b'): case L_('\t'): case L_('\n'): | |
606 | case L_('\v'): case L_('\f'): case L_('\r'): | |
607 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
608 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
609 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
610 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
611 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
612 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
613 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
614 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
615 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
616 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
617 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
618 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
619 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
620 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
621 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
622 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
623 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
624 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
625 | case L_('~'): | |
626 | /* The C Standard requires these 98 characters (plus '%') to | |
627 | be in the basic execution character set. None of these | |
628 | characters can start a multibyte sequence, so they need | |
629 | not be analyzed further. */ | |
630 | add (1, *p = *f); | |
631 | continue; | |
632 | ||
633 | default: | |
634 | /* Copy this multibyte sequence until we reach its end, find | |
635 | an error, or come back to the initial shift state. */ | |
636 | { | |
637 | mbstate_t mbstate = mbstate_zero; | |
638 | size_t len = 0; | |
639 | size_t fsize; | |
640 | ||
641 | if (! format_end) | |
642 | format_end = f + strlen (f) + 1; | |
643 | fsize = format_end - f; | |
644 | ||
645 | do | |
646 | { | |
647 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); | |
648 | ||
649 | if (bytes == 0) | |
650 | break; | |
651 | ||
652 | if (bytes == (size_t) -2) | |
653 | { | |
654 | len += strlen (f + len); | |
655 | break; | |
656 | } | |
657 | ||
658 | if (bytes == (size_t) -1) | |
659 | { | |
660 | len++; | |
661 | break; | |
662 | } | |
663 | ||
664 | len += bytes; | |
665 | } | |
666 | while (! mbsinit (&mbstate)); | |
667 | ||
668 | cpy (len, f); | |
669 | f += len - 1; | |
670 | continue; | |
671 | } | |
672 | } | |
673 | ||
674 | #else /* ! DO_MULTIBYTE */ | |
675 | ||
676 | /* Either multibyte encodings are not supported, they are | |
677 | safe for formats, so any non-'%' byte can be copied through, | |
678 | or this is the wide character version. */ | |
679 | if (*f != L_('%')) | |
680 | { | |
681 | add (1, *p = *f); | |
682 | continue; | |
683 | } | |
684 | ||
685 | #endif /* ! DO_MULTIBYTE */ | |
686 | ||
687 | /* Check for flags that can modify a format. */ | |
688 | while (1) | |
689 | { | |
690 | switch (*++f) | |
691 | { | |
692 | /* This influences the number formats. */ | |
693 | case L_('_'): | |
694 | case L_('-'): | |
695 | case L_('0'): | |
696 | pad = *f; | |
697 | continue; | |
698 | ||
699 | /* This changes textual output. */ | |
700 | case L_('^'): | |
701 | to_uppcase = 1; | |
702 | continue; | |
703 | case L_('#'): | |
704 | change_case = 1; | |
705 | continue; | |
706 | ||
707 | default: | |
708 | break; | |
709 | } | |
710 | break; | |
711 | } | |
712 | ||
713 | /* As a GNU extension we allow to specify the field width. */ | |
714 | if (ISDIGIT (*f)) | |
715 | { | |
716 | width = 0; | |
717 | do | |
718 | { | |
719 | if (width > INT_MAX / 10 | |
720 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) | |
721 | /* Avoid overflow. */ | |
722 | width = INT_MAX; | |
723 | else | |
724 | { | |
725 | width *= 10; | |
726 | width += *f - L_('0'); | |
727 | } | |
728 | ++f; | |
729 | } | |
730 | while (ISDIGIT (*f)); | |
731 | } | |
732 | ||
733 | /* Check for modifiers. */ | |
734 | switch (*f) | |
735 | { | |
736 | case L_('E'): | |
737 | case L_('O'): | |
738 | modifier = *f++; | |
739 | break; | |
740 | ||
741 | default: | |
742 | modifier = 0; | |
743 | break; | |
744 | } | |
745 | ||
746 | /* Now do the specified format. */ | |
747 | format_char = *f; | |
748 | switch (format_char) | |
749 | { | |
750 | #define DO_NUMBER(d, v) \ | |
751 | digits = d > width ? d : width; \ | |
752 | number_value = v; goto do_number | |
753 | #define DO_NUMBER_SPACEPAD(d, v) \ | |
754 | digits = d > width ? d : width; \ | |
755 | number_value = v; goto do_number_spacepad | |
756 | ||
757 | case L_('%'): | |
758 | if (modifier != 0) | |
759 | goto bad_format; | |
760 | add (1, *p = *f); | |
761 | break; | |
762 | ||
763 | case L_('a'): | |
764 | if (modifier != 0) | |
765 | goto bad_format; | |
766 | if (change_case) | |
767 | { | |
768 | to_uppcase = 1; | |
769 | to_lowcase = 0; | |
770 | } | |
771 | #if defined _NL_CURRENT || !HAVE_STRFTIME | |
772 | cpy (aw_len, a_wkday); | |
773 | break; | |
774 | #else | |
775 | goto underlying_strftime; | |
776 | #endif | |
777 | ||
778 | case 'A': | |
779 | if (modifier != 0) | |
780 | goto bad_format; | |
781 | if (change_case) | |
782 | { | |
783 | to_uppcase = 1; | |
784 | to_lowcase = 0; | |
785 | } | |
786 | #if defined _NL_CURRENT || !HAVE_STRFTIME | |
787 | cpy (STRLEN (f_wkday), f_wkday); | |
788 | break; | |
789 | #else | |
790 | goto underlying_strftime; | |
791 | #endif | |
792 | ||
793 | case L_('b'): | |
794 | case L_('h'): | |
795 | if (change_case) | |
796 | { | |
797 | to_uppcase = 1; | |
798 | to_lowcase = 0; | |
799 | } | |
800 | if (modifier != 0) | |
801 | goto bad_format; | |
802 | #if defined _NL_CURRENT || !HAVE_STRFTIME | |
803 | cpy (am_len, a_month); | |
804 | break; | |
805 | #else | |
806 | goto underlying_strftime; | |
807 | #endif | |
808 | ||
809 | case L_('B'): | |
810 | if (modifier != 0) | |
811 | goto bad_format; | |
812 | if (change_case) | |
813 | { | |
814 | to_uppcase = 1; | |
815 | to_lowcase = 0; | |
816 | } | |
817 | #if defined _NL_CURRENT || !HAVE_STRFTIME | |
818 | cpy (STRLEN (f_month), f_month); | |
819 | break; | |
820 | #else | |
821 | goto underlying_strftime; | |
822 | #endif | |
823 | ||
824 | case L_('c'): | |
825 | if (modifier == L_('O')) | |
826 | goto bad_format; | |
827 | #ifdef _NL_CURRENT | |
828 | if (! (modifier == 'E' | |
829 | && (*(subfmt = | |
830 | (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
831 | NLW(ERA_D_T_FMT))) | |
832 | != '\0'))) | |
833 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
834 | #else | |
835 | # if HAVE_STRFTIME | |
836 | goto underlying_strftime; | |
837 | # else | |
838 | subfmt = L_("%a %b %e %H:%M:%S %Y"); | |
839 | # endif | |
840 | #endif | |
841 | ||
842 | subformat: | |
843 | { | |
844 | CHAR_T *old_start = p; | |
845 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, | |
846 | tp ut_argument LOCALE_ARG); | |
847 | add (len, my_strftime (p, maxsize - i, subfmt, | |
848 | tp ut_argument LOCALE_ARG)); | |
849 | ||
850 | if (to_uppcase) | |
851 | while (old_start < p) | |
852 | { | |
853 | *old_start = TOUPPER ((UCHAR_T) *old_start, loc); | |
854 | ++old_start; | |
855 | } | |
856 | } | |
857 | break; | |
858 | ||
859 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) | |
860 | underlying_strftime: | |
861 | { | |
862 | /* The relevant information is available only via the | |
863 | underlying strftime implementation, so use that. */ | |
864 | char ufmt[4]; | |
865 | char *u = ufmt; | |
866 | char ubuf[1024]; /* enough for any single format in practice */ | |
867 | size_t len; | |
868 | /* Make sure we're calling the actual underlying strftime. | |
869 | In some cases, config.h contains something like | |
870 | "#define strftime rpl_strftime". */ | |
871 | # ifdef strftime | |
872 | # undef strftime | |
873 | size_t strftime (); | |
874 | # endif | |
875 | ||
876 | *u++ = '%'; | |
877 | if (modifier != 0) | |
878 | *u++ = modifier; | |
879 | *u++ = format_char; | |
880 | *u = '\0'; | |
881 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
882 | if (len == 0 && ubuf[0] != '\0') | |
883 | return 0; | |
884 | cpy (len, ubuf); | |
885 | } | |
886 | break; | |
887 | #endif | |
888 | ||
889 | case L_('C'): | |
890 | if (modifier == L_('O')) | |
891 | goto bad_format; | |
892 | if (modifier == L_('E')) | |
893 | { | |
894 | #if HAVE_STRUCT_ERA_ENTRY | |
895 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); | |
896 | if (era) | |
897 | { | |
898 | # ifdef COMPILE_WIDE | |
899 | size_t len = __wcslen (era->era_wname); | |
900 | cpy (len, era->era_wname); | |
901 | # else | |
902 | size_t len = strlen (era->era_name); | |
903 | cpy (len, era->era_name); | |
904 | # endif | |
905 | break; | |
906 | } | |
907 | #else | |
908 | # if HAVE_STRFTIME | |
909 | goto underlying_strftime; | |
910 | # endif | |
911 | #endif | |
912 | } | |
913 | ||
914 | { | |
915 | int year = tp->tm_year + TM_YEAR_BASE; | |
916 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
917 | } | |
918 | ||
919 | case L_('x'): | |
920 | if (modifier == L_('O')) | |
921 | goto bad_format; | |
922 | #ifdef _NL_CURRENT | |
923 | if (! (modifier == L_('E') | |
924 | && (*(subfmt = | |
925 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) | |
926 | != L_('\0')))) | |
927 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
928 | goto subformat; | |
929 | #else | |
930 | # if HAVE_STRFTIME | |
931 | goto underlying_strftime; | |
932 | # else | |
933 | /* Fall through. */ | |
934 | # endif | |
935 | #endif | |
936 | case L_('D'): | |
937 | if (modifier != 0) | |
938 | goto bad_format; | |
939 | subfmt = L_("%m/%d/%y"); | |
940 | goto subformat; | |
941 | ||
942 | case L_('d'): | |
943 | if (modifier == L_('E')) | |
944 | goto bad_format; | |
945 | ||
946 | DO_NUMBER (2, tp->tm_mday); | |
947 | ||
948 | case L_('e'): | |
949 | if (modifier == L_('E')) | |
950 | goto bad_format; | |
951 | ||
952 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); | |
953 | ||
954 | /* All numeric formats set DIGITS and NUMBER_VALUE and then | |
955 | jump to one of these two labels. */ | |
956 | ||
957 | do_number_spacepad: | |
958 | /* Force `_' flag unless overwritten by `0' or '-' flag. */ | |
959 | if (pad != L_('0') && pad != L_('-')) | |
960 | pad = L_('_'); | |
961 | ||
962 | do_number: | |
963 | /* Format the number according to the MODIFIER flag. */ | |
964 | ||
965 | if (modifier == L_('O') && 0 <= number_value) | |
966 | { | |
967 | #ifdef _NL_CURRENT | |
968 | /* Get the locale specific alternate representation of | |
969 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
970 | const CHAR_T *cp = nl_get_alt_digit (number_value | |
971 | HELPER_LOCALE_ARG); | |
972 | ||
973 | if (cp != NULL) | |
974 | { | |
975 | size_t digitlen = STRLEN (cp); | |
976 | if (digitlen != 0) | |
977 | { | |
978 | cpy (digitlen, cp); | |
979 | break; | |
980 | } | |
981 | } | |
982 | #else | |
983 | # if HAVE_STRFTIME | |
984 | goto underlying_strftime; | |
985 | # endif | |
986 | #endif | |
987 | } | |
988 | { | |
989 | unsigned int u = number_value; | |
990 | ||
991 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
992 | negative_number = number_value < 0; | |
993 | ||
994 | if (negative_number) | |
995 | u = -u; | |
996 | ||
997 | do | |
998 | *--bufp = u % 10 + L_('0'); | |
999 | while ((u /= 10) != 0); | |
1000 | } | |
1001 | ||
1002 | do_number_sign_and_padding: | |
1003 | if (negative_number) | |
1004 | *--bufp = L_('-'); | |
1005 | ||
1006 | if (pad != L_('-')) | |
1007 | { | |
1008 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
1009 | - bufp); | |
1010 | ||
1011 | if (padding > 0) | |
1012 | { | |
1013 | if (pad == L_('_')) | |
1014 | { | |
1015 | if ((size_t) padding >= maxsize - i) | |
1016 | return 0; | |
1017 | ||
1018 | if (p) | |
1019 | memset_space (p, padding); | |
1020 | i += padding; | |
1021 | width = width > padding ? width - padding : 0; | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | if ((size_t) digits >= maxsize - i) | |
1026 | return 0; | |
1027 | ||
1028 | if (negative_number) | |
1029 | { | |
1030 | ++bufp; | |
1031 | ||
1032 | if (p) | |
1033 | *p++ = L_('-'); | |
1034 | ++i; | |
1035 | } | |
1036 | ||
1037 | if (p) | |
1038 | memset_zero (p, padding); | |
1039 | i += padding; | |
1040 | width = 0; | |
1041 | } | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); | |
1046 | break; | |
1047 | ||
1048 | case L_('F'): | |
1049 | if (modifier != 0) | |
1050 | goto bad_format; | |
1051 | subfmt = L_("%Y-%m-%d"); | |
1052 | goto subformat; | |
1053 | ||
1054 | case L_('H'): | |
1055 | if (modifier == L_('E')) | |
1056 | goto bad_format; | |
1057 | ||
1058 | DO_NUMBER (2, tp->tm_hour); | |
1059 | ||
1060 | case L_('I'): | |
1061 | if (modifier == L_('E')) | |
1062 | goto bad_format; | |
1063 | ||
1064 | DO_NUMBER (2, hour12); | |
1065 | ||
1066 | case L_('k'): /* GNU extension. */ | |
1067 | if (modifier == L_('E')) | |
1068 | goto bad_format; | |
1069 | ||
1070 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
1071 | ||
1072 | case L_('l'): /* GNU extension. */ | |
1073 | if (modifier == L_('E')) | |
1074 | goto bad_format; | |
1075 | ||
1076 | DO_NUMBER_SPACEPAD (2, hour12); | |
1077 | ||
1078 | case L_('j'): | |
1079 | if (modifier == L_('E')) | |
1080 | goto bad_format; | |
1081 | ||
1082 | DO_NUMBER (3, 1 + tp->tm_yday); | |
1083 | ||
1084 | case L_('M'): | |
1085 | if (modifier == L_('E')) | |
1086 | goto bad_format; | |
1087 | ||
1088 | DO_NUMBER (2, tp->tm_min); | |
1089 | ||
1090 | case L_('m'): | |
1091 | if (modifier == L_('E')) | |
1092 | goto bad_format; | |
1093 | ||
1094 | DO_NUMBER (2, tp->tm_mon + 1); | |
1095 | ||
1096 | case L_('n'): | |
1097 | add (1, *p = L_('\n')); | |
1098 | break; | |
1099 | ||
1100 | case L_('P'): | |
1101 | to_lowcase = 1; | |
1102 | #if !defined _NL_CURRENT && HAVE_STRFTIME | |
1103 | format_char = L_('p'); | |
1104 | #endif | |
1105 | /* FALLTHROUGH */ | |
1106 | ||
1107 | case L_('p'): | |
1108 | if (change_case) | |
1109 | { | |
1110 | to_uppcase = 0; | |
1111 | to_lowcase = 1; | |
1112 | } | |
1113 | #if defined _NL_CURRENT || !HAVE_STRFTIME | |
1114 | cpy (ap_len, ampm); | |
1115 | break; | |
1116 | #else | |
1117 | goto underlying_strftime; | |
1118 | #endif | |
1119 | ||
1120 | case L_('R'): | |
1121 | subfmt = L_("%H:%M"); | |
1122 | goto subformat; | |
1123 | ||
1124 | case L_('r'): | |
1125 | #if !defined _NL_CURRENT && HAVE_STRFTIME | |
1126 | goto underlying_strftime; | |
1127 | #else | |
1128 | # ifdef _NL_CURRENT | |
1129 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
1130 | NLW(T_FMT_AMPM))) | |
1131 | == L_('\0')) | |
1132 | # endif | |
1133 | subfmt = L_("%I:%M:%S %p"); | |
1134 | goto subformat; | |
1135 | #endif | |
1136 | ||
1137 | case L_('S'): | |
1138 | if (modifier == L_('E')) | |
1139 | goto bad_format; | |
1140 | ||
1141 | DO_NUMBER (2, tp->tm_sec); | |
1142 | ||
1143 | case L_('s'): /* GNU extension. */ | |
1144 | { | |
1145 | struct tm ltm; | |
1146 | time_t t; | |
1147 | ||
1148 | ltm = *tp; | |
1149 | t = mktime (<m); | |
1150 | ||
1151 | /* Generate string value for T using time_t arithmetic; | |
1152 | this works even if sizeof (long) < sizeof (time_t). */ | |
1153 | ||
1154 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
1155 | negative_number = t < 0; | |
1156 | ||
1157 | do | |
1158 | { | |
1159 | int d = t % 10; | |
1160 | t /= 10; | |
1161 | ||
1162 | if (negative_number) | |
1163 | { | |
1164 | d = -d; | |
1165 | ||
1166 | /* Adjust if division truncates to minus infinity. */ | |
1167 | if (0 < -1 % 10 && d < 0) | |
1168 | { | |
1169 | t++; | |
1170 | d += 10; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | *--bufp = d + L_('0'); | |
1175 | } | |
1176 | while (t != 0); | |
1177 | ||
1178 | digits = 1; | |
1179 | goto do_number_sign_and_padding; | |
1180 | } | |
1181 | ||
1182 | case L_('X'): | |
1183 | if (modifier == L_('O')) | |
1184 | goto bad_format; | |
1185 | #ifdef _NL_CURRENT | |
1186 | if (! (modifier == L_('E') | |
1187 | && (*(subfmt = | |
1188 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) | |
1189 | != L_('\0')))) | |
1190 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1191 | goto subformat; | |
1192 | #else | |
1193 | # if HAVE_STRFTIME | |
1194 | goto underlying_strftime; | |
1195 | # else | |
1196 | /* Fall through. */ | |
1197 | # endif | |
1198 | #endif | |
1199 | case L_('T'): | |
1200 | subfmt = L_("%H:%M:%S"); | |
1201 | goto subformat; | |
1202 | ||
1203 | case L_('t'): | |
1204 | add (1, *p = L_('\t')); | |
1205 | break; | |
1206 | ||
1207 | case L_('u'): | |
1208 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1209 | ||
1210 | case L_('U'): | |
1211 | if (modifier == L_('E')) | |
1212 | goto bad_format; | |
1213 | ||
1214 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1215 | ||
1216 | case L_('V'): | |
1217 | case L_('g'): | |
1218 | case L_('G'): | |
1219 | if (modifier == L_('E')) | |
1220 | goto bad_format; | |
1221 | { | |
1222 | int year = tp->tm_year + TM_YEAR_BASE; | |
1223 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1224 | ||
1225 | if (days < 0) | |
1226 | { | |
1227 | /* This ISO week belongs to the previous year. */ | |
1228 | year--; | |
1229 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
1230 | tp->tm_wday); | |
1231 | } | |
1232 | else | |
1233 | { | |
1234 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1235 | tp->tm_wday); | |
1236 | if (0 <= d) | |
1237 | { | |
1238 | /* This ISO week belongs to the next year. */ | |
1239 | year++; | |
1240 | days = d; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | switch (*f) | |
1245 | { | |
1246 | case L_('g'): | |
1247 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
1248 | ||
1249 | case L_('G'): | |
1250 | DO_NUMBER (1, year); | |
1251 | ||
1252 | default: | |
1253 | DO_NUMBER (2, days / 7 + 1); | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | case L_('W'): | |
1258 | if (modifier == L_('E')) | |
1259 | goto bad_format; | |
1260 | ||
1261 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1262 | ||
1263 | case L_('w'): | |
1264 | if (modifier == L_('E')) | |
1265 | goto bad_format; | |
1266 | ||
1267 | DO_NUMBER (1, tp->tm_wday); | |
1268 | ||
1269 | case L_('Y'): | |
1270 | if (modifier == 'E') | |
1271 | { | |
1272 | #if HAVE_STRUCT_ERA_ENTRY | |
1273 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); | |
1274 | if (era) | |
1275 | { | |
1276 | # ifdef COMPILE_WIDE | |
1277 | subfmt = era->era_wformat; | |
1278 | # else | |
1279 | subfmt = era->era_format; | |
1280 | # endif | |
1281 | goto subformat; | |
1282 | } | |
1283 | #else | |
1284 | # if HAVE_STRFTIME | |
1285 | goto underlying_strftime; | |
1286 | # endif | |
1287 | #endif | |
1288 | } | |
1289 | if (modifier == L_('O')) | |
1290 | goto bad_format; | |
1291 | else | |
1292 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
1293 | ||
1294 | case L_('y'): | |
1295 | if (modifier == L_('E')) | |
1296 | { | |
1297 | #if HAVE_STRUCT_ERA_ENTRY | |
1298 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); | |
1299 | if (era) | |
1300 | { | |
1301 | int delta = tp->tm_year - era->start_date[0]; | |
1302 | DO_NUMBER (1, (era->offset | |
1303 | + delta * era->absolute_direction)); | |
1304 | } | |
1305 | #else | |
1306 | # if HAVE_STRFTIME | |
1307 | goto underlying_strftime; | |
1308 | # endif | |
1309 | #endif | |
1310 | } | |
1311 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); | |
1312 | ||
1313 | case L_('Z'): | |
1314 | if (change_case) | |
1315 | { | |
1316 | to_uppcase = 0; | |
1317 | to_lowcase = 1; | |
1318 | } | |
1319 | ||
1320 | #if HAVE_TZNAME | |
1321 | /* The tzset() call might have changed the value. */ | |
1322 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1323 | zone = tzname[tp->tm_isdst]; | |
1324 | #endif | |
1325 | if (! zone) | |
1326 | zone = ""; | |
1327 | ||
1328 | #ifdef COMPILE_WIDE | |
1329 | { | |
1330 | /* The zone string is always given in multibyte form. We have | |
1331 | to transform it first. */ | |
1332 | wchar_t *wczone; | |
1333 | size_t len; | |
1334 | widen (zone, wczone, len); | |
1335 | cpy (len, wczone); | |
1336 | } | |
1337 | #else | |
1338 | cpy (strlen (zone), zone); | |
1339 | #endif | |
1340 | break; | |
1341 | ||
1342 | case L_('z'): | |
1343 | if (tp->tm_isdst < 0) | |
1344 | break; | |
1345 | ||
1346 | { | |
1347 | int diff; | |
1348 | #if HAVE_TM_GMTOFF | |
1349 | diff = tp->tm_gmtoff; | |
1350 | #else | |
1351 | if (ut) | |
1352 | diff = 0; | |
1353 | else | |
1354 | { | |
1355 | struct tm gtm; | |
1356 | struct tm ltm; | |
1357 | time_t lt; | |
1358 | ||
1359 | ltm = *tp; | |
1360 | lt = mktime (<m); | |
1361 | ||
1362 | if (lt == (time_t) -1) | |
1363 | { | |
1364 | /* mktime returns -1 for errors, but -1 is also a | |
1365 | valid time_t value. Check whether an error really | |
1366 | occurred. */ | |
1367 | struct tm tm; | |
1368 | ||
1369 | if (! __localtime_r (<, &tm) | |
1370 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1371 | | (ltm.tm_min ^ tm.tm_min) | |
1372 | | (ltm.tm_hour ^ tm.tm_hour) | |
1373 | | (ltm.tm_mday ^ tm.tm_mday) | |
1374 | | (ltm.tm_mon ^ tm.tm_mon) | |
1375 | | (ltm.tm_year ^ tm.tm_year))) | |
1376 | break; | |
1377 | } | |
1378 | ||
1379 | if (! __gmtime_r (<, >m)) | |
1380 | break; | |
1381 | ||
1382 | diff = tm_diff (<m, >m); | |
1383 | } | |
1384 | #endif | |
1385 | ||
1386 | if (diff < 0) | |
1387 | { | |
1388 | add (1, *p = L_('-')); | |
1389 | diff = -diff; | |
1390 | } | |
1391 | else | |
1392 | add (1, *p = L_('+')); | |
1393 | ||
1394 | diff /= 60; | |
1395 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
1396 | } | |
1397 | ||
1398 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1399 | --f; | |
1400 | /* Fall through. */ | |
1401 | default: | |
1402 | /* Unknown format; output the format, including the '%', | |
1403 | since this is most likely the right thing to do if a | |
1404 | multibyte string has been misparsed. */ | |
1405 | bad_format: | |
1406 | { | |
1407 | int flen; | |
1408 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1409 | continue; | |
1410 | cpy (flen, &f[1 - flen]); | |
1411 | } | |
1412 | break; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | if (p && maxsize != 0) | |
1417 | *p = L_('\0'); | |
1418 | return i; | |
1419 | } | |
1420 | #ifdef _LIBC | |
1421 | libc_hidden_def (my_strftime) | |
1422 | #endif | |
1423 | ||
1424 | ||
1425 | #ifdef emacs | |
1426 | /* For Emacs we have a separate interface which corresponds to the normal | |
1427 | strftime function and does not have the extra information whether the | |
1428 | TP arguments comes from a `gmtime' call or not. */ | |
1429 | size_t | |
1430 | emacs_strftime (s, maxsize, format, tp) | |
1431 | char *s; | |
1432 | size_t maxsize; | |
1433 | const char *format; | |
1434 | const struct tm *tp; | |
1435 | { | |
1436 | return my_strftime (s, maxsize, format, tp, 0); | |
1437 | } | |
1438 | #endif | |
1439 | ||
1440 | #if defined _LIBC && !defined COMPILE_WIDE | |
c4d6f155 | 1441 | weak_alias (__strftime_l, strftime_l) |
ccadf7b5 | 1442 | #endif |