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 #define TYPE_SIGNED(t) ((t) -1 < 0)
125 /* Bound on length of the string representing an integer value of type t.
126 Subtract one for the sign bit if t is signed;
127 302 / 1000 is log10 (2) rounded up;
128 add one for integer division truncation;
129 add one more for a minus sign if t is signed. */
130 #define INT_STRLEN_BOUND(t) \
131 ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
133 #define TM_YEAR_BASE 1900
136 /* Nonzero if YEAR is a leap year (every 4 years,
137 except every 100th isn't, and every 400th is). */
138 # define __isleap(year) \
139 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
144 # define tzname __tzname
145 # define tzset __tzset
149 /* Portable standalone applications should supply a "time_r.h" that
150 declares a POSIX-compliant localtime_r, for the benefit of older
151 implementations that lack localtime_r or have a nonstandard one.
152 See the gnulib time_r module for one way to implement this. */
155 # undef __localtime_r
156 # define __gmtime_r gmtime_r
157 # define __localtime_r localtime_r
162 # define memset_space(P, Len) (wmemset (P, L' ', Len), (P) += (Len))
163 # define memset_zero(P, Len) (wmemset (P, L'0', Len), (P) += (Len))
165 # define memset_space(P, Len) (memset (P, ' ', Len), (P) += (Len))
166 # define memset_zero(P, Len) (memset (P, '0', Len), (P) += (Len))
173 int _delta = width - _n; \
174 int _incr = _n + (_delta > 0 ? _delta : 0); \
175 if ((size_t) _incr >= maxsize - i) \
181 if (pad == L_('0')) \
182 memset_zero (p, _delta); \
184 memset_space (p, _delta); \
195 memcpy_lowcase (p, (s), _n LOCALE_ARG); \
196 else if (to_uppcase) \
197 memcpy_uppcase (p, (s), _n LOCALE_ARG); \
199 MEMCPY ((void *) p, (void const *) (s), _n))
202 # ifndef USE_IN_EXTENDED_LOCALE_MODEL
203 # undef __mbsrtowcs_l
204 # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
206 # define widen(os, ws, l) \
209 const char *__s = os; \
210 memset (&__st, '\0', sizeof (__st)); \
211 l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \
212 ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \
213 (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \
218 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
219 /* We use this code also for the extended locale handling where the
220 function gets as an additional argument the locale which has to be
221 used. To access the values we have to redefine the _NL_CURRENT
223 # define strftime __strftime_l
224 # define wcsftime __wcsftime_l
226 # define _NL_CURRENT(category, item) \
227 (current->values[_NL_ITEM_INDEX (item)].string)
228 # define LOCALE_ARG , loc
229 # define LOCALE_PARAM_PROTO , __locale_t loc
230 # define HELPER_LOCALE_ARG , current
232 # define LOCALE_PARAM_PROTO
235 # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
237 # define HELPER_LOCALE_ARG
242 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
243 # define TOUPPER(Ch, L) __towupper_l (Ch, L)
244 # define TOLOWER(Ch, L) __towlower_l (Ch, L)
246 # define TOUPPER(Ch, L) towupper (Ch)
247 # define TOLOWER(Ch, L) towlower (Ch)
251 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
252 # define TOUPPER(Ch, L) __toupper_l (Ch, L)
253 # define TOLOWER(Ch, L) __tolower_l (Ch, L)
255 # define TOUPPER(Ch, L) toupper (Ch)
256 # define TOLOWER(Ch, L) tolower (Ch)
259 # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
260 # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
263 /* We don't use `isdigit' here since the locale dependent
264 interpretation is not what we want here. We only need to accept
265 the arabic digits in the ASCII range. One day there is perhaps a
266 more reliable way to accept other sets of digits. */
267 #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
270 memcpy_lowcase (CHAR_T *dest, const CHAR_T *src,
271 size_t len LOCALE_PARAM_PROTO)
274 dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
279 memcpy_uppcase (CHAR_T *dest, const CHAR_T *src,
280 size_t len LOCALE_PARAM_PROTO)
283 dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
289 /* Yield the difference between *A and *B,
290 measured in seconds, ignoring leap seconds. */
291 # define tm_diff ftime_tm_diff
293 tm_diff (const struct tm *a, const struct tm *b)
295 /* Compute intervening leap days correctly even if year is negative.
296 Take care to avoid int overflow in leap day calculations,
297 but it's OK to assume that A and B are close to each other. */
298 int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3);
299 int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3);
300 int a100 = a4 / 25 - (a4 % 25 < 0);
301 int b100 = b4 / 25 - (b4 % 25 < 0);
302 int a400 = SHR (a100, 2);
303 int b400 = SHR (b100, 2);
304 int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
305 int years = a->tm_year - b->tm_year;
306 int days = (365 * years + intervening_leap_days
307 + (a->tm_yday - b->tm_yday));
308 return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
309 + (a->tm_min - b->tm_min))
310 + (a->tm_sec - b->tm_sec));
312 #endif /* ! HAVE_TM_GMTOFF */
316 /* The number of days from the first day of the first ISO week of this
317 year to the year day YDAY with week day WDAY. ISO weeks start on
318 Monday; the first ISO week has the year's first Thursday. YDAY may
319 be as small as YDAY_MINIMUM. */
320 #define ISO_WEEK_START_WDAY 1 /* Monday */
321 #define ISO_WEEK1_WDAY 4 /* Thursday */
322 #define YDAY_MINIMUM (-366)
327 iso_week_days (int yday, int wday)
329 /* Add enough to the first operand of % to make it nonnegative. */
330 int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
332 - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
333 + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
337 #if !(defined _NL_CURRENT || HAVE_STRFTIME)
338 static CHAR_T const weekday_name[][10] =
340 L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
341 L_("Thursday"), L_("Friday"), L_("Saturday")
343 static CHAR_T const month_name[][10] =
345 L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
346 L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
347 L_("November"), L_("December")
352 /* When compiling this file, GNU applications can #define my_strftime
353 to a symbol (typically nstrftime) to get an extended strftime with
354 extra arguments UT and NS. Emacs is a special case for now, but
355 this Emacs-specific code can be removed once Emacs's config.h
356 defines my_strftime. */
357 #if defined emacs && !defined my_strftime
358 # define my_strftime nstrftime
362 # define extra_args , ut, ns
363 # define extra_args_spec , int ut, int ns
366 # define my_strftime wcsftime
367 # define nl_get_alt_digit _nl_get_walt_digit
369 # define my_strftime strftime
370 # define nl_get_alt_digit _nl_get_alt_digit
373 # define extra_args_spec
374 /* We don't have this information in general. */
379 #if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST
380 /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned
381 by localtime. On such systems, we must use the tzset and localtime
382 wrappers to work around the bug. */
383 "you must run the autoconf test for a working tzset function"
387 /* Write information from TP into S according to the format
388 string FORMAT, writing no more that MAXSIZE characters
389 (including the terminating '\0') and returning number of
390 characters written. If S is NULL, nothing will be written
391 anywhere, so to determine how many characters would be
392 written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
394 my_strftime (CHAR_T *s, size_t maxsize, const CHAR_T *format,
395 const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO)
397 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
398 struct locale_data *const current = loc->__locales[LC_TIME];
401 int hour12 = tp->tm_hour;
403 /* We cannot make the following values variables since we must delay
404 the evaluation of these values until really needed since some
405 expressions might not be valid in every situation. The `struct tm'
406 might be generated by a strptime() call that initialized
407 only a few elements. Dereference the pointers only if the format
408 requires this. Then it is ok to fail if the pointers are invalid. */
410 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
412 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
414 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
416 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
418 ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \
419 ? NLW(PM_STR) : NLW(AM_STR)))
421 # define aw_len STRLEN (a_wkday)
422 # define am_len STRLEN (a_month)
423 # define ap_len STRLEN (ampm)
426 # define f_wkday (weekday_name[tp->tm_wday])
427 # define f_month (month_name[tp->tm_mon])
428 # define a_wkday f_wkday
429 # define a_month f_month
430 # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
441 #if DO_MULTIBYTE && !defined COMPILE_WIDE
442 const char *format_end = NULL;
447 /* The POSIX test suite assumes that setting
448 the environment variable TZ to a new value before calling strftime()
449 will influence the result (the %Z format) even if the information in
450 TP is computed with a totally different time zone.
451 This is bogus: though POSIX allows bad behavior like this,
452 POSIX does not require it. Do the right thing instead. */
453 zone = (const char *) tp->tm_zone;
458 if (! (zone && *zone))
463 /* POSIX.1 requires that local time zone information be used as
464 though strftime called tzset. */
477 for (f = format; *f != '\0'; ++f)
479 int pad = 0; /* Padding for number ('-', '_', or 0). */
480 int modifier; /* Field modifier ('E', 'O', or 0). */
481 int digits; /* Max digits for numeric format. */
482 int number_value; /* Numeric value to be printed. */
483 unsigned int u_number_value; /* (unsigned int) number_value. */
484 bool negative_number; /* 1 if the number is negative. */
485 const CHAR_T *subfmt;
487 CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
488 ? INT_STRLEN_BOUND (time_t)
489 : INT_STRLEN_BOUND (int))];
491 bool to_lowcase = false;
492 bool to_uppcase = false;
493 bool change_case = false;
496 #if DO_MULTIBYTE && !defined COMPILE_WIDE
502 case L_('\b'): case L_('\t'): case L_('\n'):
503 case L_('\v'): case L_('\f'): case L_('\r'):
504 case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
505 case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
506 case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
507 case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
508 case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
509 case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
510 case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
511 case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
512 case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
513 case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
514 case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
515 case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
516 case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
517 case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
518 case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
519 case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
520 case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
521 case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
523 /* The C Standard requires these 98 characters (plus '%') to
524 be in the basic execution character set. None of these
525 characters can start a multibyte sequence, so they need
526 not be analyzed further. */
531 /* Copy this multibyte sequence until we reach its end, find
532 an error, or come back to the initial shift state. */
534 mbstate_t mbstate = mbstate_zero;
539 format_end = f + strlen (f) + 1;
540 fsize = format_end - f;
544 size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
549 if (bytes == (size_t) -2)
551 len += strlen (f + len);
555 if (bytes == (size_t) -1)
563 while (! mbsinit (&mbstate));
571 #else /* ! DO_MULTIBYTE */
573 /* Either multibyte encodings are not supported, they are
574 safe for formats, so any non-'%' byte can be copied through,
575 or this is the wide character version. */
582 #endif /* ! DO_MULTIBYTE */
584 /* Check for flags that can modify a format. */
589 /* This influences the number formats. */
596 /* This changes textual output. */
610 /* As a GNU extension we allow to specify the field width. */
616 if (width > INT_MAX / 10
617 || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10))
618 /* Avoid overflow. */
623 width += *f - L_('0');
627 while (ISDIGIT (*f));
630 /* Check for modifiers. */
643 /* Now do the specified format. */
647 #define DO_NUMBER(d, v) \
649 number_value = v; goto do_number
650 #define DO_SIGNED_NUMBER(d, negative, v) \
652 negative_number = negative; \
653 u_number_value = v; goto do_signed_number
654 #define DO_NUMBER_SPACEPAD(d, v) \
656 number_value = v; goto do_number_spacepad
672 #if defined _NL_CURRENT || !HAVE_STRFTIME
673 cpy (aw_len, a_wkday);
676 goto underlying_strftime;
687 #if defined _NL_CURRENT || !HAVE_STRFTIME
688 cpy (STRLEN (f_wkday), f_wkday);
691 goto underlying_strftime;
703 #if defined _NL_CURRENT || !HAVE_STRFTIME
704 cpy (am_len, a_month);
707 goto underlying_strftime;
718 #if defined _NL_CURRENT || !HAVE_STRFTIME
719 cpy (STRLEN (f_month), f_month);
722 goto underlying_strftime;
726 if (modifier == L_('O'))
729 if (! (modifier == 'E'
731 (const CHAR_T *) _NL_CURRENT (LC_TIME,
734 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
737 goto underlying_strftime;
739 subfmt = L_("%a %b %e %H:%M:%S %Y");
745 CHAR_T *old_start = p;
746 size_t len = my_strftime (NULL, (size_t) -1, subfmt,
747 tp extra_args LOCALE_ARG);
748 add (len, my_strftime (p, maxsize - i, subfmt,
749 tp extra_args LOCALE_ARG));
752 while (old_start < p)
754 *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
760 #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
763 /* The relevant information is available only via the
764 underlying strftime implementation, so use that. */
767 char ubuf[1024]; /* enough for any single format in practice */
769 /* Make sure we're calling the actual underlying strftime.
770 In some cases, config.h contains something like
771 "#define strftime rpl_strftime". */
782 len = strftime (ubuf, sizeof ubuf, ufmt, tp);
783 if (len == 0 && ubuf[0] != '\0')
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);