1 /* Copyright (C) 1991-1999, 2000, 2001, 2003 Free Software Foundation, Inc.
3 NOTE: The canonical source of this file is maintained with the GNU C Library.
4 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 # define HAVE_LIMITS_H 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
33 # define MULTIBYTE_IS_FORMAT_SAFE 1
34 # define STDC_HEADERS 1
35 # include "../locale/localeinfo.h"
38 #if defined emacs && !defined HAVE_BCOPY
39 # define HAVE_MEMCPY 1
43 #include <sys/types.h> /* Some systems define `time_t' here. */
45 #ifdef TIME_WITH_SYS_TIME
46 # include <sys/time.h>
49 # ifdef HAVE_SYS_TIME_H
50 # include <sys/time.h>
56 extern char *tzname[];
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)
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)
76 static const mbstate_t mbstate_zero;
89 # define memcpy(d, s, n) bcopy ((s), (d), (n))
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
100 # define MEMCPY(d, s, n) __wmemcpy (d, s, n)
101 # define STRLEN(s) __wcslen (s)
105 # define UCHAR_T unsigned char
107 # define NLW(Sym) Sym
109 # if !defined STDC_HEADERS && !defined HAVE_MEMCPY
110 # define MEMCPY(d, s, n) bcopy ((s), (d), (n))
112 # define MEMCPY(d, s, n) memcpy ((d), (s), (n))
114 # define STRLEN(s) strlen (s)
117 # define MEMPCPY(d, s, n) __mempcpy (d, s, n)
119 # ifndef HAVE_MEMPCPY
120 # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n)))
126 # if defined __GNUC__ || (defined __STDC__ && __STDC__)
127 # define __P(args) args
129 # define __P(args) ()
131 #endif /* Not __P. */
149 #define TYPE_SIGNED(t) ((t) -1 < 0)
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))
159 #define TM_YEAR_BASE 1900
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))
170 # define my_strftime_gmtime_r __gmtime_r
171 # define my_strftime_localtime_r __localtime_r
172 # define tzname __tzname
173 # define tzset __tzset
176 /* If we're a strftime substitute in a GNU program, then prefer gmtime
177 to gmtime_r, since many gmtime_r implementations are buggy.
178 Similarly for localtime_r. */
180 # if ! HAVE_TM_GMTOFF
181 static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *));
183 my_strftime_gmtime_r (t, tp)
187 struct tm *l = gmtime (t);
194 static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *));
196 my_strftime_localtime_r (t, tp)
200 struct tm *l = localtime (t);
206 # endif /* ! HAVE_TM_GMTOFF */
207 #endif /* ! defined _LIBC */
210 #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC
211 /* Some systems lack the `memset' function and we don't want to
212 introduce additional dependencies. */
213 /* The SGI compiler reportedly barfs on the trailing null
214 if we use a string constant as the initializer. 28 June 1997, rms. */
215 static const CHAR_T spaces[16] = /* " " */
217 L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),
218 L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ')
220 static const CHAR_T zeroes[16] = /* "0000000000000000" */
222 L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),
223 L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0')
226 # define memset_space(P, Len) \
232 int _this = _len > 16 ? 16 : _len; \
233 (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \
239 # define memset_zero(P, Len) \
245 int _this = _len > 16 ? 16 : _len; \
246 (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \
253 # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len))
254 # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len))
256 # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
257 # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len))
265 int _delta = width - _n; \
266 int _incr = _n + (_delta > 0 ? _delta : 0); \
267 if ((size_t) _incr >= maxsize - i) \
273 if (pad == L_('0')) \
274 memset_zero (p, _delta); \
276 memset_space (p, _delta); \
287 memcpy_lowcase (p, (s), _n LOCALE_ARG); \
288 else if (to_uppcase) \
289 memcpy_uppcase (p, (s), _n LOCALE_ARG); \
291 MEMCPY ((PTR) p, (const PTR) (s), _n))
294 # ifndef USE_IN_EXTENDED_LOCALE_MODEL
295 # undef __mbsrtowcs_l
296 # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
298 # define widen(os, ws, l) \
301 const char *__s = os; \
302 memset (&__st, '\0', sizeof (__st)); \
303 l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \
304 ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \
305 (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \
310 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
311 /* We use this code also for the extended locale handling where the
312 function gets as an additional argument the locale which has to be
313 used. To access the values we have to redefine the _NL_CURRENT
315 # define strftime __strftime_l
316 # define wcsftime __wcsftime_l
318 # define _NL_CURRENT(category, item) \
319 (current->values[_NL_ITEM_INDEX (item)].string)
320 # define LOCALE_PARAM , loc
321 # define LOCALE_ARG , loc
322 # define LOCALE_PARAM_DECL __locale_t loc;
323 # define LOCALE_PARAM_PROTO , __locale_t loc
324 # define HELPER_LOCALE_ARG , current
326 # define LOCALE_PARAM
327 # define LOCALE_PARAM_PROTO
329 # define LOCALE_PARAM_DECL
331 # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
333 # define HELPER_LOCALE_ARG
338 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
339 # define TOUPPER(Ch, L) __towupper_l (Ch, L)
340 # define TOLOWER(Ch, L) __towlower_l (Ch, L)
342 # define TOUPPER(Ch, L) towupper (Ch)
343 # define TOLOWER(Ch, L) towlower (Ch)
347 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
348 # define TOUPPER(Ch, L) __toupper_l (Ch, L)
349 # define TOLOWER(Ch, L) __tolower_l (Ch, L)
351 # define TOUPPER(Ch, L) toupper (Ch)
352 # define TOLOWER(Ch, L) tolower (Ch)
355 # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
356 # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
359 /* We don't use `isdigit' here since the locale dependent
360 interpretation is not what we want here. We only need to accept
361 the arabic digits in the ASCII range. One day there is perhaps a
362 more reliable way to accept other sets of digits. */
363 #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
365 static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src,
366 size_t len LOCALE_PARAM_PROTO));
369 memcpy_lowcase (dest, src, len LOCALE_PARAM)
376 dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
380 static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src,
381 size_t len LOCALE_PARAM_PROTO));
384 memcpy_uppcase (dest, src, len LOCALE_PARAM)
391 dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
397 /* Yield the difference between *A and *B,
398 measured in seconds, ignoring leap seconds. */
399 # define tm_diff ftime_tm_diff
400 static int tm_diff __P ((const struct tm *, const struct tm *));
406 /* Compute intervening leap days correctly even if year is negative.
407 Take care to avoid int overflow in leap day calculations,
408 but it's OK to assume that A and B are close to each other. */
409 int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
410 int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
411 int a100 = a4 / 25 - (a4 % 25 < 0);
412 int b100 = b4 / 25 - (b4 % 25 < 0);
413 int a400 = a100 >> 2;
414 int b400 = b100 >> 2;
415 int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
416 int years = a->tm_year - b->tm_year;
417 int days = (365 * years + intervening_leap_days
418 + (a->tm_yday - b->tm_yday));
419 return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
420 + (a->tm_min - b->tm_min))
421 + (a->tm_sec - b->tm_sec));
423 #endif /* ! HAVE_TM_GMTOFF */
427 /* The number of days from the first day of the first ISO week of this
428 year to the year day YDAY with week day WDAY. ISO weeks start on
429 Monday; the first ISO week has the year's first Thursday. YDAY may
430 be as small as YDAY_MINIMUM. */
431 #define ISO_WEEK_START_WDAY 1 /* Monday */
432 #define ISO_WEEK1_WDAY 4 /* Thursday */
433 #define YDAY_MINIMUM (-366)
434 static int iso_week_days __P ((int, int));
439 iso_week_days (yday, wday)
443 /* Add enough to the first operand of % to make it nonnegative. */
444 int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
446 - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
447 + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
451 #if !(defined _NL_CURRENT || HAVE_STRFTIME)
452 static CHAR_T const weekday_name[][10] =
454 L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
455 L_("Thursday"), L_("Friday"), L_("Saturday")
457 static CHAR_T const month_name[][10] =
459 L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
460 L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
461 L_("November"), L_("December")
466 /* When compiling this file, GNU applications can #define my_strftime
467 to a symbol (typically nstrftime) to get an extended strftime with
468 extra arguments UT and NS. Emacs is a special case for now, but
469 this Emacs-specific code can be removed once Emacs's config.h
470 defines my_strftime. */
471 #if defined emacs && !defined my_strftime
472 # define my_strftime nstrftime
476 # define extra_args , ut, ns
477 # define extra_args_spec int ut; int ns;
478 # define extra_args_spec_iso , int ut, int ns
481 # define my_strftime wcsftime
482 # define nl_get_alt_digit _nl_get_walt_digit
484 # define my_strftime strftime
485 # define nl_get_alt_digit _nl_get_alt_digit
488 # define extra_args_spec
489 # define extra_args_spec_iso
490 /* We don't have this information in general. */
495 #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
496 /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
497 Work around this bug by copying *tp before it might be munged. */
498 size_t _strftime_copytm __P ((char *, size_t, const char *,
499 const struct tm * extra_args_spec_iso));
501 my_strftime (s, maxsize, format, tp extra_args)
504 const CHAR_T *format;
510 return _strftime_copytm (s, maxsize, format, &tmcopy extra_args);
513 # define my_strftime _strftime_copytm
517 /* Write information from TP into S according to the format
518 string FORMAT, writing no more that MAXSIZE characters
519 (including the terminating '\0') and returning number of
520 characters written. If S is NULL, nothing will be written
521 anywhere, so to determine how many characters would be
522 written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
524 my_strftime (s, maxsize, format, tp extra_args LOCALE_PARAM)
527 const CHAR_T *format;
532 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
533 struct locale_data *const current = loc->__locales[LC_TIME];
536 int hour12 = tp->tm_hour;
538 /* We cannot make the following values variables since we must delay
539 the evaluation of these values until really needed since some
540 expressions might not be valid in every situation. The `struct tm'
541 might be generated by a strptime() call that initialized
542 only a few elements. Dereference the pointers only if the format
543 requires this. Then it is ok to fail if the pointers are invalid. */
545 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
547 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
549 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
551 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
553 ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \
554 ? NLW(PM_STR) : NLW(AM_STR)))
556 # define aw_len STRLEN (a_wkday)
557 # define am_len STRLEN (a_month)
558 # define ap_len STRLEN (ampm)
561 # define f_wkday (weekday_name[tp->tm_wday])
562 # define f_month (month_name[tp->tm_mon])
563 # define a_wkday f_wkday
564 # define a_month f_month
565 # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
576 #if DO_MULTIBYTE && !defined COMPILE_WIDE
577 const char *format_end = NULL;
582 /* The POSIX test suite assumes that setting
583 the environment variable TZ to a new value before calling strftime()
584 will influence the result (the %Z format) even if the information in
585 TP is computed with a totally different time zone.
586 This is bogus: though POSIX allows bad behavior like this,
587 POSIX does not require it. Do the right thing instead. */
588 zone = (const char *) tp->tm_zone;
593 if (! (zone && *zone))
598 /* POSIX.1 requires that local time zone information be used as
599 though strftime called tzset. */
612 for (f = format; *f != '\0'; ++f)
614 int pad = 0; /* Padding for number ('-', '_', or 0). */
615 int modifier; /* Field modifier ('E', 'O', or 0). */
616 int digits; /* Max digits for numeric format. */
617 int number_value; /* Numeric value to be printed. */
618 int negative_number; /* 1 if the number is negative. */
619 const CHAR_T *subfmt;
621 CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
622 ? INT_STRLEN_BOUND (time_t)
623 : INT_STRLEN_BOUND (int))];
630 #if DO_MULTIBYTE && !defined COMPILE_WIDE
636 case L_('\b'): case L_('\t'): case L_('\n'):
637 case L_('\v'): case L_('\f'): case L_('\r'):
638 case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
639 case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
640 case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
641 case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
642 case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
643 case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
644 case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
645 case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
646 case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
647 case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
648 case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
649 case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
650 case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
651 case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
652 case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
653 case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
654 case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
655 case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
657 /* The C Standard requires these 98 characters (plus '%') to
658 be in the basic execution character set. None of these
659 characters can start a multibyte sequence, so they need
660 not be analyzed further. */
665 /* Copy this multibyte sequence until we reach its end, find
666 an error, or come back to the initial shift state. */
668 mbstate_t mbstate = mbstate_zero;
673 format_end = f + strlen (f) + 1;
674 fsize = format_end - f;
678 size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
683 if (bytes == (size_t) -2)
685 len += strlen (f + len);
689 if (bytes == (size_t) -1)
697 while (! mbsinit (&mbstate));
705 #else /* ! DO_MULTIBYTE */
707 /* Either multibyte encodings are not supported, they are
708 safe for formats, so any non-'%' byte can be copied through,
709 or this is the wide character version. */
716 #endif /* ! DO_MULTIBYTE */
718 /* Check for flags that can modify a format. */
723 /* This influences the number formats. */
730 /* This changes textual output. */
744 /* As a GNU extension we allow to specify the field width. */
750 if (width > INT_MAX / 10
751 || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10))
752 /* Avoid overflow. */
757 width += *f - L_('0');
761 while (ISDIGIT (*f));
764 /* Check for modifiers. */
777 /* Now do the specified format. */
781 #define DO_NUMBER(d, v) \
782 digits = d > width ? d : width; \
783 number_value = v; goto do_number
784 #define DO_NUMBER_SPACEPAD(d, v) \
785 digits = d > width ? d : width; \
786 number_value = v; goto do_number_spacepad
802 #if defined _NL_CURRENT || !HAVE_STRFTIME
803 cpy (aw_len, a_wkday);
806 goto underlying_strftime;
817 #if defined _NL_CURRENT || !HAVE_STRFTIME
818 cpy (STRLEN (f_wkday), f_wkday);
821 goto underlying_strftime;
833 #if defined _NL_CURRENT || !HAVE_STRFTIME
834 cpy (am_len, a_month);
837 goto underlying_strftime;
848 #if defined _NL_CURRENT || !HAVE_STRFTIME
849 cpy (STRLEN (f_month), f_month);
852 goto underlying_strftime;
856 if (modifier == L_('O'))
859 if (! (modifier == 'E'
861 (const CHAR_T *) _NL_CURRENT (LC_TIME,
864 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
867 goto underlying_strftime;
869 subfmt = L_("%a %b %e %H:%M:%S %Y");
875 CHAR_T *old_start = p;
876 size_t len = my_strftime (NULL, (size_t) -1, subfmt,
877 tp extra_args LOCALE_ARG);
878 add (len, my_strftime (p, maxsize - i, subfmt,
879 tp extra_args LOCALE_ARG));
882 while (old_start < p)
884 *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
890 #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
893 /* The relevant information is available only via the
894 underlying strftime implementation, so use that. */
897 char ubuf[1024]; /* enough for any single format in practice */
899 /* Make sure we're calling the actual underlying strftime.
900 In some cases, config.h contains something like
901 "#define strftime rpl_strftime". */
912 len = strftime (ubuf, sizeof ubuf, ufmt, tp);
913 if (len == 0 && ubuf[0] != '\0')
921 if (modifier == L_('O'))
923 if (modifier == L_('E'))
925 #if HAVE_STRUCT_ERA_ENTRY
926 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
930 size_t len = __wcslen (era->era_wname);
931 cpy (len, era->era_wname);
933 size_t len = strlen (era->era_name);
934 cpy (len, era->era_name);
940 goto underlying_strftime;
946 int year = tp->tm_year + TM_YEAR_BASE;
947 DO_NUMBER (1, year / 100 - (year % 100 < 0));
951 if (modifier == L_('O'))
954 if (! (modifier == L_('E')
956 (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
958 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
962 goto underlying_strftime;
970 subfmt = L_("%m/%d/%y");
974 if (modifier == L_('E'))
977 DO_NUMBER (2, tp->tm_mday);
980 if (modifier == L_('E'))
983 DO_NUMBER_SPACEPAD (2, tp->tm_mday);
985 /* All numeric formats set DIGITS and NUMBER_VALUE and then
986 jump to one of these two labels. */
989 /* Force `_' flag unless overridden by `0' or `-' flag. */
990 if (pad != L_('0') && pad != L_('-'))
994 /* Format the number according to the MODIFIER flag. */
996 if (modifier == L_('O') && 0 <= number_value)
999 /* Get the locale specific alternate representation of
1000 the number NUMBER_VALUE. If none exist NULL is returned. */
1001 const CHAR_T *cp = nl_get_alt_digit (number_value
1006 size_t digitlen = STRLEN (cp);
1015 goto underlying_strftime;
1020 unsigned int u = number_value;
1022 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1023 negative_number = number_value < 0;
1025 if (negative_number)
1029 *--bufp = u % 10 + L_('0');
1030 while ((u /= 10) != 0);
1033 do_number_sign_and_padding:
1034 if (negative_number)
1039 int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
1046 if ((size_t) padding >= maxsize - i)
1050 memset_space (p, padding);
1052 width = width > padding ? width - padding : 0;
1056 if ((size_t) digits >= maxsize - i)
1059 if (negative_number)
1069 memset_zero (p, padding);
1076 cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
1082 subfmt = L_("%Y-%m-%d");
1086 if (modifier == L_('E'))
1089 DO_NUMBER (2, tp->tm_hour);
1092 if (modifier == L_('E'))
1095 DO_NUMBER (2, hour12);
1097 case L_('k'): /* GNU extension. */
1098 if (modifier == L_('E'))
1101 DO_NUMBER_SPACEPAD (2, tp->tm_hour);
1103 case L_('l'): /* GNU extension. */
1104 if (modifier == L_('E'))
1107 DO_NUMBER_SPACEPAD (2, hour12);
1110 if (modifier == L_('E'))
1113 DO_NUMBER (3, 1 + tp->tm_yday);
1116 if (modifier == L_('E'))
1119 DO_NUMBER (2, tp->tm_min);
1122 if (modifier == L_('E'))
1125 DO_NUMBER (2, tp->tm_mon + 1);
1128 case L_('N'): /* GNU extension. */
1129 if (modifier == L_('E'))
1135 /* Take an explicit width less than 9 as a precision. */
1137 for (j = width; j < 9; j++)
1141 DO_NUMBER (9, number_value);
1145 add (1, *p = L_('\n'));
1150 #if !defined _NL_CURRENT && HAVE_STRFTIME
1151 format_char = L_('p');
1161 #if defined _NL_CURRENT || !HAVE_STRFTIME
1165 goto underlying_strftime;
1169 subfmt = L_("%H:%M");
1174 if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
1178 subfmt = L_("%I:%M:%S %p");
1182 if (modifier == L_('E'))
1185 DO_NUMBER (2, tp->tm_sec);
1187 case L_('s'): /* GNU extension. */
1195 /* Generate string value for T using time_t arithmetic;
1196 this works even if sizeof (long) < sizeof (time_t). */
1198 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1199 negative_number = t < 0;
1206 if (negative_number)
1210 /* Adjust if division truncates to minus infinity. */
1211 if (0 < -1 % 10 && d < 0)
1218 *--bufp = d + L_('0');
1223 goto do_number_sign_and_padding;
1227 if (modifier == L_('O'))
1230 if (! (modifier == L_('E')
1232 (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
1234 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
1238 goto underlying_strftime;
1244 subfmt = L_("%H:%M:%S");
1248 add (1, *p = L_('\t'));
1252 DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
1255 if (modifier == L_('E'))
1258 DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
1263 if (modifier == L_('E'))
1266 int year = tp->tm_year + TM_YEAR_BASE;
1267 int days = iso_week_days (tp->tm_yday, tp->tm_wday);
1271 /* This ISO week belongs to the previous year. */
1273 days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
1278 int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
1282 /* This ISO week belongs to the next year. */
1291 DO_NUMBER (2, (year % 100 + 100) % 100);
1294 DO_NUMBER (1, year);
1297 DO_NUMBER (2, days / 7 + 1);
1302 if (modifier == L_('E'))
1305 DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
1308 if (modifier == L_('E'))
1311 DO_NUMBER (1, tp->tm_wday);
1314 if (modifier == 'E')
1316 #if HAVE_STRUCT_ERA_ENTRY
1317 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1320 # ifdef COMPILE_WIDE
1321 subfmt = era->era_wformat;
1323 subfmt = era->era_format;
1329 goto underlying_strftime;
1333 if (modifier == L_('O'))
1336 DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
1339 if (modifier == L_('E'))
1341 #if HAVE_STRUCT_ERA_ENTRY
1342 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1345 int delta = tp->tm_year - era->start_date[0];
1346 DO_NUMBER (1, (era->offset
1347 + delta * era->absolute_direction));
1351 goto underlying_strftime;
1355 DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
1365 /* The tzset() call might have changed the value. */
1366 if (!(zone && *zone) && tp->tm_isdst >= 0)
1367 zone = tzname[tp->tm_isdst];
1374 /* The zone string is always given in multibyte form. We have
1375 to transform it first. */
1378 widen (zone, wczone, len);
1382 cpy (strlen (zone), zone);
1387 if (tp->tm_isdst < 0)
1393 diff = tp->tm_gmtoff;
1406 if (lt == (time_t) -1)
1408 /* mktime returns -1 for errors, but -1 is also a
1409 valid time_t value. Check whether an error really
1413 if (! my_strftime_localtime_r (<, &tm)
1414 || ((ltm.tm_sec ^ tm.tm_sec)
1415 | (ltm.tm_min ^ tm.tm_min)
1416 | (ltm.tm_hour ^ tm.tm_hour)
1417 | (ltm.tm_mday ^ tm.tm_mday)
1418 | (ltm.tm_mon ^ tm.tm_mon)
1419 | (ltm.tm_year ^ tm.tm_year)))
1423 if (! my_strftime_gmtime_r (<, >m))
1426 diff = tm_diff (<m, >m);
1432 add (1, *p = L_('-'));
1436 add (1, *p = L_('+'));
1439 DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
1442 case L_('\0'): /* GNU extension: % at end of format. */
1446 /* Unknown format; output the format, including the '%',
1447 since this is most likely the right thing to do if a
1448 multibyte string has been misparsed. */
1452 for (flen = 1; f[1 - flen] != L_('%'); flen++)
1454 cpy (flen, &f[1 - flen]);
1460 if (p && maxsize != 0)
1465 libc_hidden_def (my_strftime)
1470 /* For Emacs we have a separate interface which corresponds to the normal
1471 strftime function plus the ut argument, but without the ns argument. */
1473 emacs_strftimeu (s, maxsize, format, tp, ut)
1477 const struct tm *tp;
1480 return my_strftime (s, maxsize, format, tp, ut, 0);