1 /* Copyright (C) 1991-1999, 2000, 2001, 2003, 2004, 2005 Free Software
4 NOTE: The canonical source of this file is maintained with the GNU C Library.
5 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation,
19 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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
33 # define MULTIBYTE_IS_FORMAT_SAFE 1
34 # include "../locale/localeinfo.h"
38 #include <sys/types.h> /* Some systems define `time_t' here. */
40 #ifdef TIME_WITH_SYS_TIME
41 # include <sys/time.h>
44 # ifdef HAVE_SYS_TIME_H
45 # include <sys/time.h>
51 extern char *tzname[];
54 /* Do multibyte processing if multibytes are supported, unless
55 multibyte sequences are safe in formats. Multibyte sequences are
56 safe if they cannot contain byte sequences that look like format
57 conversion specifications. The GNU C Library uses UTF8 multibyte
58 encoding, which is safe for formats, but strftime.c can be used
59 with other C libraries that use unsafe encodings. */
60 #define DO_MULTIBYTE (HAVE_MBLEN && HAVE_WCHAR_H && ! MULTIBYTE_IS_FORMAT_SAFE)
66 /* Simulate mbrlen with mblen as best we can. */
67 # define mbstate_t int
68 # define mbrlen(s, n, ps) mblen (s, n)
69 # define mbsinit(ps) (*(ps) == 0)
71 static const mbstate_t mbstate_zero;
82 # define CHAR_T wchar_t
83 # define UCHAR_T unsigned int
84 # define L_(Str) L##Str
85 # define NLW(Sym) _NL_W##Sym
87 # define MEMCPY(d, s, n) __wmemcpy (d, s, n)
88 # define STRLEN(s) __wcslen (s)
92 # define UCHAR_T unsigned char
96 # define MEMCPY(d, s, n) memcpy (d, s, n)
97 # define STRLEN(s) strlen (s)
100 # define MEMPCPY(d, s, n) __mempcpy (d, s, n)
102 # ifndef HAVE_MEMPCPY
103 # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n)))
108 /* Shift A right by B bits portably, by dividing A by 2**B and
109 truncating towards minus infinity. A and B should be free of side
110 effects, and B should be in the range 0 <= B <= INT_BITS - 2, where
111 INT_BITS is the number of useful bits in an int. GNU code can
112 assume that INT_BITS is at least 32.
114 ISO C99 says that A >> B is implementation-defined if A < 0. Some
115 implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
116 right in the usual way when A < 0, so SHR falls back on division if
117 ordinary A >> B doesn't seem to be the usual signed shift. */
121 : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
123 /* Bound on length of the string representing an integer value or type T.
124 Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485;
125 add 1 for integer division truncation; add 1 more for a minus sign
127 #define INT_STRLEN_BOUND(t) \
128 ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2)
130 #define TM_YEAR_BASE 1900
133 /* Nonzero if YEAR is a leap year (every 4 years,
134 except every 100th isn't, and every 400th is). */
135 # define __isleap(year) \
136 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
141 # define tzname __tzname
142 # define tzset __tzset
146 /* Portable standalone applications should supply a "time_r.h" that
147 declares a POSIX-compliant localtime_r, for the benefit of older
148 implementations that lack localtime_r or have a nonstandard one.
149 See the gnulib time_r module for one way to implement this. */
152 # undef __localtime_r
153 # define __gmtime_r gmtime_r
154 # define __localtime_r localtime_r
159 # define memset_space(P, Len) (wmemset (P, L' ', Len), (P) += (Len))
160 # define memset_zero(P, Len) (wmemset (P, L'0', Len), (P) += (Len))
162 # define memset_space(P, Len) (memset (P, ' ', Len), (P) += (Len))
163 # define memset_zero(P, Len) (memset (P, '0', Len), (P) += (Len))
170 int _delta = width - _n; \
171 int _incr = _n + (_delta > 0 ? _delta : 0); \
172 if ((size_t) _incr >= maxsize - i) \
178 if (pad == L_('0')) \
179 memset_zero (p, _delta); \
181 memset_space (p, _delta); \
192 memcpy_lowcase (p, (s), _n LOCALE_ARG); \
193 else if (to_uppcase) \
194 memcpy_uppcase (p, (s), _n LOCALE_ARG); \
196 MEMCPY ((void *) p, (void const *) (s), _n))
199 # ifndef USE_IN_EXTENDED_LOCALE_MODEL
200 # undef __mbsrtowcs_l
201 # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
203 # define widen(os, ws, l) \
206 const char *__s = os; \
207 memset (&__st, '\0', sizeof (__st)); \
208 l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \
209 ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \
210 (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \
215 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
216 /* We use this code also for the extended locale handling where the
217 function gets as an additional argument the locale which has to be
218 used. To access the values we have to redefine the _NL_CURRENT
220 # define strftime __strftime_l
221 # define wcsftime __wcsftime_l
223 # define _NL_CURRENT(category, item) \
224 (current->values[_NL_ITEM_INDEX (item)].string)
225 # define LOCALE_ARG , loc
226 # define LOCALE_PARAM_PROTO , __locale_t loc
227 # define HELPER_LOCALE_ARG , current
229 # define LOCALE_PARAM_PROTO
232 # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
234 # define HELPER_LOCALE_ARG
239 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
240 # define TOUPPER(Ch, L) __towupper_l (Ch, L)
241 # define TOLOWER(Ch, L) __towlower_l (Ch, L)
243 # define TOUPPER(Ch, L) towupper (Ch)
244 # define TOLOWER(Ch, L) towlower (Ch)
248 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
249 # define TOUPPER(Ch, L) __toupper_l (Ch, L)
250 # define TOLOWER(Ch, L) __tolower_l (Ch, L)
252 # define TOUPPER(Ch, L) toupper (Ch)
253 # define TOLOWER(Ch, L) tolower (Ch)
256 # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
257 # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
260 /* We don't use `isdigit' here since the locale dependent
261 interpretation is not what we want here. We only need to accept
262 the arabic digits in the ASCII range. One day there is perhaps a
263 more reliable way to accept other sets of digits. */
264 #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
267 memcpy_lowcase (CHAR_T *dest, const CHAR_T *src,
268 size_t len LOCALE_PARAM_PROTO)
271 dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
276 memcpy_uppcase (CHAR_T *dest, const CHAR_T *src,
277 size_t len LOCALE_PARAM_PROTO)
280 dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
286 /* Yield the difference between *A and *B,
287 measured in seconds, ignoring leap seconds. */
288 # define tm_diff ftime_tm_diff
290 tm_diff (const struct tm *a, const struct tm *b)
292 /* Compute intervening leap days correctly even if year is negative.
293 Take care to avoid int overflow in leap day calculations,
294 but it's OK to assume that A and B are close to each other. */
295 int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3);
296 int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3);
297 int a100 = a4 / 25 - (a4 % 25 < 0);
298 int b100 = b4 / 25 - (b4 % 25 < 0);
299 int a400 = SHR (a100, 2);
300 int b400 = SHR (b100, 2);
301 int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
302 int years = a->tm_year - b->tm_year;
303 int days = (365 * years + intervening_leap_days
304 + (a->tm_yday - b->tm_yday));
305 return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
306 + (a->tm_min - b->tm_min))
307 + (a->tm_sec - b->tm_sec));
309 #endif /* ! HAVE_TM_GMTOFF */
313 /* The number of days from the first day of the first ISO week of this
314 year to the year day YDAY with week day WDAY. ISO weeks start on
315 Monday; the first ISO week has the year's first Thursday. YDAY may
316 be as small as YDAY_MINIMUM. */
317 #define ISO_WEEK_START_WDAY 1 /* Monday */
318 #define ISO_WEEK1_WDAY 4 /* Thursday */
319 #define YDAY_MINIMUM (-366)
324 iso_week_days (int yday, int wday)
326 /* Add enough to the first operand of % to make it nonnegative. */
327 int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
329 - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
330 + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
334 #if !(defined _NL_CURRENT || HAVE_STRFTIME)
335 static CHAR_T const weekday_name[][10] =
337 L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
338 L_("Thursday"), L_("Friday"), L_("Saturday")
340 static CHAR_T const month_name[][10] =
342 L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
343 L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
344 L_("November"), L_("December")
349 /* When compiling this file, GNU applications can #define my_strftime
350 to a symbol (typically nstrftime) to get an extended strftime with
351 extra arguments UT and NS. Emacs is a special case for now, but
352 this Emacs-specific code can be removed once Emacs's config.h
353 defines my_strftime. */
354 #if defined emacs && !defined my_strftime
355 # define my_strftime nstrftime
359 # define extra_args , ut, ns
360 # define extra_args_spec , int ut, int ns
363 # define my_strftime wcsftime
364 # define nl_get_alt_digit _nl_get_walt_digit
366 # define my_strftime strftime
367 # define nl_get_alt_digit _nl_get_alt_digit
370 # define extra_args_spec
371 /* We don't have this information in general. */
376 #if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST
377 /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned
378 by localtime. On such systems, we must use the tzset and localtime
379 wrappers to work around the bug. */
380 "you must run the autoconf test for a working tzset function"
384 /* Write information from TP into S according to the format
385 string FORMAT, writing no more that MAXSIZE characters
386 (including the terminating '\0') and returning number of
387 characters written. If S is NULL, nothing will be written
388 anywhere, so to determine how many characters would be
389 written, use NULL for S and (size_t) -1 for MAXSIZE. */
391 my_strftime (CHAR_T *s, size_t maxsize, const CHAR_T *format,
392 const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO)
394 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
395 struct locale_data *const current = loc->__locales[LC_TIME];
398 int hour12 = tp->tm_hour;
400 /* We cannot make the following values variables since we must delay
401 the evaluation of these values until really needed since some
402 expressions might not be valid in every situation. The `struct tm'
403 might be generated by a strptime() call that initialized
404 only a few elements. Dereference the pointers only if the format
405 requires this. Then it is ok to fail if the pointers are invalid. */
407 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
409 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
411 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
413 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
415 ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \
416 ? NLW(PM_STR) : NLW(AM_STR)))
418 # define aw_len STRLEN (a_wkday)
419 # define am_len STRLEN (a_month)
420 # define ap_len STRLEN (ampm)
423 # define f_wkday (weekday_name[tp->tm_wday])
424 # define f_month (month_name[tp->tm_mon])
425 # define a_wkday f_wkday
426 # define a_month f_month
427 # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
438 #if DO_MULTIBYTE && !defined COMPILE_WIDE
439 const char *format_end = NULL;
444 /* The POSIX test suite assumes that setting
445 the environment variable TZ to a new value before calling strftime()
446 will influence the result (the %Z format) even if the information in
447 TP is computed with a totally different time zone.
448 This is bogus: though POSIX allows bad behavior like this,
449 POSIX does not require it. Do the right thing instead. */
450 zone = (const char *) tp->tm_zone;
455 if (! (zone && *zone))
460 /* POSIX.1 requires that local time zone information be used as
461 though strftime called tzset. */
474 for (f = format; *f != '\0'; ++f)
476 int pad = 0; /* Padding for number ('-', '_', or 0). */
477 int modifier; /* Field modifier ('E', 'O', or 0). */
478 int digits; /* Max digits for numeric format. */
479 int number_value; /* Numeric value to be printed. */
480 unsigned int u_number_value; /* (unsigned int) number_value. */
481 bool negative_number; /* 1 if the number is negative. */
482 const CHAR_T *subfmt;
484 CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
485 ? INT_STRLEN_BOUND (time_t)
486 : INT_STRLEN_BOUND (int))];
488 bool to_lowcase = false;
489 bool to_uppcase = false;
490 bool change_case = false;
493 #if DO_MULTIBYTE && !defined COMPILE_WIDE
499 case L_('\b'): case L_('\t'): case L_('\n'):
500 case L_('\v'): case L_('\f'): case L_('\r'):
501 case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
502 case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
503 case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
504 case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
505 case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
506 case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
507 case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
508 case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
509 case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
510 case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
511 case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
512 case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
513 case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
514 case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
515 case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
516 case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
517 case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
518 case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
520 /* The C Standard requires these 98 characters (plus '%') to
521 be in the basic execution character set. None of these
522 characters can start a multibyte sequence, so they need
523 not be analyzed further. */
528 /* Copy this multibyte sequence until we reach its end, find
529 an error, or come back to the initial shift state. */
531 mbstate_t mbstate = mbstate_zero;
536 format_end = f + strlen (f) + 1;
537 fsize = format_end - f;
541 size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
546 if (bytes == (size_t) -2)
548 len += strlen (f + len);
552 if (bytes == (size_t) -1)
560 while (! mbsinit (&mbstate));
568 #else /* ! DO_MULTIBYTE */
570 /* Either multibyte encodings are not supported, they are
571 safe for formats, so any non-'%' byte can be copied through,
572 or this is the wide character version. */
579 #endif /* ! DO_MULTIBYTE */
581 /* Check for flags that can modify a format. */
586 /* This influences the number formats. */
593 /* This changes textual output. */
607 /* As a GNU extension we allow to specify the field width. */
613 if (width > INT_MAX / 10
614 || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10))
615 /* Avoid overflow. */
620 width += *f - L_('0');
624 while (ISDIGIT (*f));
627 /* Check for modifiers. */
640 /* Now do the specified format. */
644 #define DO_NUMBER(d, v) \
646 number_value = v; goto do_number
647 #define DO_SIGNED_NUMBER(d, negative, v) \
649 negative_number = negative; \
650 u_number_value = v; goto do_signed_number
651 #define DO_NUMBER_SPACEPAD(d, v) \
653 number_value = v; goto do_number_spacepad
669 #if defined _NL_CURRENT || !HAVE_STRFTIME
670 cpy (aw_len, a_wkday);
673 goto underlying_strftime;
684 #if defined _NL_CURRENT || !HAVE_STRFTIME
685 cpy (STRLEN (f_wkday), f_wkday);
688 goto underlying_strftime;
700 #if defined _NL_CURRENT || !HAVE_STRFTIME
701 cpy (am_len, a_month);
704 goto underlying_strftime;
715 #if defined _NL_CURRENT || !HAVE_STRFTIME
716 cpy (STRLEN (f_month), f_month);
719 goto underlying_strftime;
723 if (modifier == L_('O'))
726 if (! (modifier == 'E'
728 (const CHAR_T *) _NL_CURRENT (LC_TIME,
731 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
734 goto underlying_strftime;
736 subfmt = L_("%a %b %e %H:%M:%S %Y");
742 CHAR_T *old_start = p;
743 size_t len = my_strftime (NULL, (size_t) -1, subfmt,
744 tp extra_args LOCALE_ARG);
745 add (len, my_strftime (p, maxsize - i, subfmt,
746 tp extra_args LOCALE_ARG));
749 while (old_start < p)
751 *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
757 #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
760 /* The relevant information is available only via the
761 underlying strftime implementation, so use that. */
764 char ubuf[1024]; /* enough for any single format in practice */
766 /* Make sure we're calling the actual underlying strftime.
767 In some cases, config.h contains something like
768 "#define strftime rpl_strftime". */
774 /* The space helps distinguish strftime failure from empty
782 len = strftime (ubuf, sizeof ubuf, ufmt, tp);
785 cpy (len - 1, ubuf + 1);
791 if (modifier == L_('O'))
793 if (modifier == L_('E'))
795 #if HAVE_STRUCT_ERA_ENTRY
796 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
800 size_t len = __wcslen (era->era_wname);
801 cpy (len, era->era_wname);
803 size_t len = strlen (era->era_name);
804 cpy (len, era->era_name);
810 goto underlying_strftime;
816 int century = tp->tm_year / 100 + TM_YEAR_BASE / 100;
817 century -= tp->tm_year % 100 < 0 && 0 < century;
818 DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century);
822 if (modifier == L_('O'))
825 if (! (modifier == L_('E')
827 (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
829 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
833 goto underlying_strftime;
841 subfmt = L_("%m/%d/%y");
845 if (modifier == L_('E'))
848 DO_NUMBER (2, tp->tm_mday);
851 if (modifier == L_('E'))
854 DO_NUMBER_SPACEPAD (2, tp->tm_mday);
856 /* All numeric formats set DIGITS and NUMBER_VALUE (or U_NUMBER_VALUE)
857 and then jump to one of these three labels. */
860 /* Force `_' flag unless overridden by `0' or `-' flag. */
861 if (pad != L_('0') && pad != L_('-'))
865 /* Format NUMBER_VALUE according to the MODIFIER flag. */
866 negative_number = number_value < 0;
867 u_number_value = number_value;
870 /* Format U_NUMBER_VALUE according to the MODIFIER flag.
871 NEGATIVE_NUMBER is nonzero if the original number was
872 negative; in this case it was converted directly to
873 unsigned int (i.e., modulo (UINT_MAX + 1)) without
875 if (modifier == L_('O') && !negative_number)
878 /* Get the locale specific alternate representation of
879 the number. If none exist NULL is returned. */
880 const CHAR_T *cp = nl_get_alt_digit (u_number_value
885 size_t digitlen = STRLEN (cp);
894 goto underlying_strftime;
899 bufp = buf + sizeof (buf) / sizeof (buf[0]);
902 u_number_value = - u_number_value;
906 *--bufp = u_number_value % 10 + L_('0');
907 u_number_value /= 10;
909 while (u_number_value != 0);
914 do_number_sign_and_padding:
920 int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
927 if ((size_t) padding >= maxsize - i)
931 memset_space (p, padding);
933 width = width > padding ? width - padding : 0;
937 if ((size_t) digits >= maxsize - i)
950 memset_zero (p, padding);
957 cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
963 subfmt = L_("%Y-%m-%d");
967 if (modifier == L_('E'))
970 DO_NUMBER (2, tp->tm_hour);
973 if (modifier == L_('E'))
976 DO_NUMBER (2, hour12);
978 case L_('k'): /* GNU extension. */
979 if (modifier == L_('E'))
982 DO_NUMBER_SPACEPAD (2, tp->tm_hour);
984 case L_('l'): /* GNU extension. */
985 if (modifier == L_('E'))
988 DO_NUMBER_SPACEPAD (2, hour12);
991 if (modifier == L_('E'))
994 DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U);
997 if (modifier == L_('E'))
1000 DO_NUMBER (2, tp->tm_min);
1003 if (modifier == L_('E'))
1006 DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U);
1009 case L_('N'): /* GNU extension. */
1010 if (modifier == L_('E'))
1016 /* Take an explicit width less than 9 as a precision. */
1018 for (j = width; j < 9; j++)
1022 DO_NUMBER (9, number_value);
1026 add (1, *p = L_('\n'));
1031 #if !defined _NL_CURRENT && HAVE_STRFTIME
1032 format_char = L_('p');
1042 #if defined _NL_CURRENT || !HAVE_STRFTIME
1046 goto underlying_strftime;
1050 subfmt = L_("%H:%M");
1054 #if !defined _NL_CURRENT && HAVE_STRFTIME
1055 goto underlying_strftime;
1058 if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
1062 subfmt = L_("%I:%M:%S %p");
1067 if (modifier == L_('E'))
1070 DO_NUMBER (2, tp->tm_sec);
1072 case L_('s'): /* GNU extension. */
1080 /* Generate string value for T using time_t arithmetic;
1081 this works even if sizeof (long) < sizeof (time_t). */
1083 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1084 negative_number = t < 0;
1090 *--bufp = (negative_number ? -d : d) + L_('0');
1095 goto do_number_sign_and_padding;
1099 if (modifier == L_('O'))
1102 if (! (modifier == L_('E')
1104 (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
1106 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
1110 goto underlying_strftime;
1116 subfmt = L_("%H:%M:%S");
1120 add (1, *p = L_('\t'));
1124 DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
1127 if (modifier == L_('E'))
1130 DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
1135 if (modifier == L_('E'))
1138 /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE)
1139 is a leap year, except that YEAR and YEAR - 1 both work
1140 correctly even when (tp->tm_year + TM_YEAR_BASE) would
1142 int year = (tp->tm_year
1144 ? TM_YEAR_BASE % 400
1145 : TM_YEAR_BASE % 400 - 400));
1146 int year_adjust = 0;
1147 int days = iso_week_days (tp->tm_yday, tp->tm_wday);
1151 /* This ISO week belongs to the previous year. */
1153 days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)),
1158 int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
1162 /* This ISO week belongs to the next year. */
1172 int yy = (tp->tm_year % 100 + year_adjust) % 100;
1173 DO_NUMBER (2, (0 <= yy
1175 : tp->tm_year < -TM_YEAR_BASE - year_adjust
1181 DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust,
1182 (tp->tm_year + (unsigned int) TM_YEAR_BASE
1186 DO_NUMBER (2, days / 7 + 1);
1191 if (modifier == L_('E'))
1194 DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
1197 if (modifier == L_('E'))
1200 DO_NUMBER (1, tp->tm_wday);
1203 if (modifier == 'E')
1205 #if HAVE_STRUCT_ERA_ENTRY
1206 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1209 # ifdef COMPILE_WIDE
1210 subfmt = era->era_wformat;
1212 subfmt = era->era_format;
1218 goto underlying_strftime;
1222 if (modifier == L_('O'))
1225 DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE,
1226 tp->tm_year + (unsigned int) TM_YEAR_BASE);
1229 if (modifier == L_('E'))
1231 #if HAVE_STRUCT_ERA_ENTRY
1232 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1235 int delta = tp->tm_year - era->start_date[0];
1236 DO_NUMBER (1, (era->offset
1237 + delta * era->absolute_direction));
1241 goto underlying_strftime;
1247 int yy = tp->tm_year % 100;
1249 yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100;
1261 /* The tzset() call might have changed the value. */
1262 if (!(zone && *zone) && tp->tm_isdst >= 0)
1263 zone = tzname[tp->tm_isdst != 0];
1270 /* The zone string is always given in multibyte form. We have
1271 to transform it first. */
1274 widen (zone, wczone, len);
1278 cpy (strlen (zone), zone);
1283 if (tp->tm_isdst < 0)
1289 diff = tp->tm_gmtoff;
1302 if (lt == (time_t) -1)
1304 /* mktime returns -1 for errors, but -1 is also a
1305 valid time_t value. Check whether an error really
1309 if (! __localtime_r (<, &tm)
1310 || ((ltm.tm_sec ^ tm.tm_sec)
1311 | (ltm.tm_min ^ tm.tm_min)
1312 | (ltm.tm_hour ^ tm.tm_hour)
1313 | (ltm.tm_mday ^ tm.tm_mday)
1314 | (ltm.tm_mon ^ tm.tm_mon)
1315 | (ltm.tm_year ^ tm.tm_year)))
1319 if (! __gmtime_r (<, >m))
1322 diff = tm_diff (<m, >m);
1328 add (1, *p = L_('-'));
1332 add (1, *p = L_('+'));
1335 DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
1338 case L_('\0'): /* GNU extension: % at end of format. */
1342 /* Unknown format; output the format, including the '%',
1343 since this is most likely the right thing to do if a
1344 multibyte string has been misparsed. */
1348 for (flen = 1; f[1 - flen] != L_('%'); flen++)
1350 cpy (flen, &f[1 - flen]);
1356 if (p && maxsize != 0)
1361 libc_hidden_def (my_strftime)
1366 /* For Emacs we have a separate interface which corresponds to the normal
1367 strftime function plus the ut argument, but without the ns argument. */
1369 emacs_strftimeu (char *s, size_t maxsize, const char *format,
1370 const struct tm *tp, int ut)
1372 return my_strftime (s, maxsize, format, tp, ut, 0);