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) UINT_MAX 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". */
779 len = strftime (ubuf, sizeof ubuf, ufmt, tp);
780 if (len == 0 && ubuf[0] != '\0')
788 if (modifier == L_('O'))
790 if (modifier == L_('E'))
792 #if HAVE_STRUCT_ERA_ENTRY
793 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
797 size_t len = __wcslen (era->era_wname);
798 cpy (len, era->era_wname);
800 size_t len = strlen (era->era_name);
801 cpy (len, era->era_name);
807 goto underlying_strftime;
813 int century = tp->tm_year / 100 + TM_YEAR_BASE / 100;
814 century -= tp->tm_year % 100 < 0 && 0 < century;
815 DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century);
819 if (modifier == L_('O'))
822 if (! (modifier == L_('E')
824 (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
826 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
830 goto underlying_strftime;
838 subfmt = L_("%m/%d/%y");
842 if (modifier == L_('E'))
845 DO_NUMBER (2, tp->tm_mday);
848 if (modifier == L_('E'))
851 DO_NUMBER_SPACEPAD (2, tp->tm_mday);
853 /* All numeric formats set DIGITS and NUMBER_VALUE (or U_NUMBER_VALUE)
854 and then jump to one of these three labels. */
857 /* Force `_' flag unless overridden by `0' or `-' flag. */
858 if (pad != L_('0') && pad != L_('-'))
862 /* Format NUMBER_VALUE according to the MODIFIER flag. */
863 negative_number = number_value < 0;
864 u_number_value = number_value;
867 /* Format U_NUMBER_VALUE according to the MODIFIER flag.
868 NEGATIVE_NUMBER is nonzero if the original number was
869 negative; in this case it was converted directly to
870 unsigned int (i.e., modulo (UINT_MAX + 1)) without
872 if (modifier == L_('O') && !negative_number)
875 /* Get the locale specific alternate representation of
876 the number. If none exist NULL is returned. */
877 const CHAR_T *cp = nl_get_alt_digit (u_number_value
882 size_t digitlen = STRLEN (cp);
891 goto underlying_strftime;
896 bufp = buf + sizeof (buf) / sizeof (buf[0]);
899 u_number_value = - u_number_value;
903 *--bufp = u_number_value % 10 + L_('0');
904 u_number_value /= 10;
906 while (u_number_value != 0);
911 do_number_sign_and_padding:
917 int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
924 if ((size_t) padding >= maxsize - i)
928 memset_space (p, padding);
930 width = width > padding ? width - padding : 0;
934 if ((size_t) digits >= maxsize - i)
947 memset_zero (p, padding);
954 cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
960 subfmt = L_("%Y-%m-%d");
964 if (modifier == L_('E'))
967 DO_NUMBER (2, tp->tm_hour);
970 if (modifier == L_('E'))
973 DO_NUMBER (2, hour12);
975 case L_('k'): /* GNU extension. */
976 if (modifier == L_('E'))
979 DO_NUMBER_SPACEPAD (2, tp->tm_hour);
981 case L_('l'): /* GNU extension. */
982 if (modifier == L_('E'))
985 DO_NUMBER_SPACEPAD (2, hour12);
988 if (modifier == L_('E'))
991 DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U);
994 if (modifier == L_('E'))
997 DO_NUMBER (2, tp->tm_min);
1000 if (modifier == L_('E'))
1003 DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U);
1006 case L_('N'): /* GNU extension. */
1007 if (modifier == L_('E'))
1013 /* Take an explicit width less than 9 as a precision. */
1015 for (j = width; j < 9; j++)
1019 DO_NUMBER (9, number_value);
1023 add (1, *p = L_('\n'));
1028 #if !defined _NL_CURRENT && HAVE_STRFTIME
1029 format_char = L_('p');
1039 #if defined _NL_CURRENT || !HAVE_STRFTIME
1043 goto underlying_strftime;
1047 subfmt = L_("%H:%M");
1051 #if !defined _NL_CURRENT && HAVE_STRFTIME
1052 goto underlying_strftime;
1055 if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
1059 subfmt = L_("%I:%M:%S %p");
1064 if (modifier == L_('E'))
1067 DO_NUMBER (2, tp->tm_sec);
1069 case L_('s'): /* GNU extension. */
1077 /* Generate string value for T using time_t arithmetic;
1078 this works even if sizeof (long) < sizeof (time_t). */
1080 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1081 negative_number = t < 0;
1087 *--bufp = (negative_number ? -d : d) + L_('0');
1092 goto do_number_sign_and_padding;
1096 if (modifier == L_('O'))
1099 if (! (modifier == L_('E')
1101 (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
1103 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
1107 goto underlying_strftime;
1113 subfmt = L_("%H:%M:%S");
1117 add (1, *p = L_('\t'));
1121 DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
1124 if (modifier == L_('E'))
1127 DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
1132 if (modifier == L_('E'))
1135 /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE)
1136 is a leap year, except that YEAR and YEAR - 1 both work
1137 correctly even when (tp->tm_year + TM_YEAR_BASE) would
1139 int year = (tp->tm_year
1141 ? TM_YEAR_BASE % 400
1142 : TM_YEAR_BASE % 400 - 400));
1143 int year_adjust = 0;
1144 int days = iso_week_days (tp->tm_yday, tp->tm_wday);
1148 /* This ISO week belongs to the previous year. */
1150 days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)),
1155 int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
1159 /* This ISO week belongs to the next year. */
1169 int yy = (tp->tm_year % 100 + year_adjust) % 100;
1170 DO_NUMBER (2, (0 <= yy
1172 : tp->tm_year < -TM_YEAR_BASE - year_adjust
1178 DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust,
1179 (tp->tm_year + (unsigned int) TM_YEAR_BASE
1183 DO_NUMBER (2, days / 7 + 1);
1188 if (modifier == L_('E'))
1191 DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
1194 if (modifier == L_('E'))
1197 DO_NUMBER (1, tp->tm_wday);
1200 if (modifier == 'E')
1202 #if HAVE_STRUCT_ERA_ENTRY
1203 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1206 # ifdef COMPILE_WIDE
1207 subfmt = era->era_wformat;
1209 subfmt = era->era_format;
1215 goto underlying_strftime;
1219 if (modifier == L_('O'))
1222 DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE,
1223 tp->tm_year + (unsigned int) TM_YEAR_BASE);
1226 if (modifier == L_('E'))
1228 #if HAVE_STRUCT_ERA_ENTRY
1229 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1232 int delta = tp->tm_year - era->start_date[0];
1233 DO_NUMBER (1, (era->offset
1234 + delta * era->absolute_direction));
1238 goto underlying_strftime;
1244 int yy = tp->tm_year % 100;
1246 yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100;
1258 /* The tzset() call might have changed the value. */
1259 if (!(zone && *zone) && tp->tm_isdst >= 0)
1260 zone = tzname[tp->tm_isdst != 0];
1267 /* The zone string is always given in multibyte form. We have
1268 to transform it first. */
1271 widen (zone, wczone, len);
1275 cpy (strlen (zone), zone);
1280 if (tp->tm_isdst < 0)
1286 diff = tp->tm_gmtoff;
1299 if (lt == (time_t) -1)
1301 /* mktime returns -1 for errors, but -1 is also a
1302 valid time_t value. Check whether an error really
1306 if (! __localtime_r (<, &tm)
1307 || ((ltm.tm_sec ^ tm.tm_sec)
1308 | (ltm.tm_min ^ tm.tm_min)
1309 | (ltm.tm_hour ^ tm.tm_hour)
1310 | (ltm.tm_mday ^ tm.tm_mday)
1311 | (ltm.tm_mon ^ tm.tm_mon)
1312 | (ltm.tm_year ^ tm.tm_year)))
1316 if (! __gmtime_r (<, >m))
1319 diff = tm_diff (<m, >m);
1325 add (1, *p = L_('-'));
1329 add (1, *p = L_('+'));
1332 DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
1335 case L_('\0'): /* GNU extension: % at end of format. */
1339 /* Unknown format; output the format, including the '%',
1340 since this is most likely the right thing to do if a
1341 multibyte string has been misparsed. */
1345 for (flen = 1; f[1 - flen] != L_('%'); flen++)
1347 cpy (flen, &f[1 - flen]);
1353 if (p && maxsize != 0)
1358 libc_hidden_def (my_strftime)
1363 /* For Emacs we have a separate interface which corresponds to the normal
1364 strftime function plus the ut argument, but without the ns argument. */
1366 emacs_strftimeu (char *s, size_t maxsize, const char *format,
1367 const struct tm *tp, int ut)
1369 return my_strftime (s, maxsize, format, tp, ut, 0);