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 it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
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 GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
26 # define HAVE_LIMITS_H 1
28 # define HAVE_MBRLEN 1
29 # define HAVE_STRUCT_ERA_ENTRY 1
30 # define HAVE_TM_GMTOFF 1
31 # define HAVE_TM_ZONE 1
32 # define HAVE_TZNAME 1
34 # define MULTIBYTE_IS_FORMAT_SAFE 1
35 # define STDC_HEADERS 1
36 # include "../locale/localeinfo.h"
39 #if defined emacs && !defined HAVE_BCOPY
40 # define HAVE_MEMCPY 1
44 #include <sys/types.h> /* Some systems define `time_t' here. */
46 #ifdef TIME_WITH_SYS_TIME
47 # include <sys/time.h>
50 # ifdef HAVE_SYS_TIME_H
51 # include <sys/time.h>
57 extern char *tzname[];
60 /* Do multibyte processing if multibytes are supported, unless
61 multibyte sequences are safe in formats. Multibyte sequences are
62 safe if they cannot contain byte sequences that look like format
63 conversion specifications. The GNU C Library uses UTF8 multibyte
64 encoding, which is safe for formats, but strftime.c can be used
65 with other C libraries that use unsafe encodings. */
66 #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)
72 /* Simulate mbrlen with mblen as best we can. */
73 # define mbstate_t int
74 # define mbrlen(s, n, ps) mblen (s, n)
75 # define mbsinit(ps) (*(ps) == 0)
77 static const mbstate_t mbstate_zero;
90 # define memcpy(d, s, n) bcopy ((s), (d), (n))
96 # define CHAR_T wchar_t
97 # define UCHAR_T unsigned int
98 # define L_(Str) L##Str
99 # define NLW(Sym) _NL_W##Sym
101 # define MEMCPY(d, s, n) __wmemcpy (d, s, n)
102 # define STRLEN(s) __wcslen (s)
106 # define UCHAR_T unsigned char
108 # define NLW(Sym) Sym
110 # if !defined STDC_HEADERS && !defined HAVE_MEMCPY
111 # define MEMCPY(d, s, n) bcopy ((s), (d), (n))
113 # define MEMCPY(d, s, n) memcpy ((d), (s), (n))
115 # define STRLEN(s) strlen (s)
118 # define MEMPCPY(d, s, n) __mempcpy (d, s, n)
120 # ifndef HAVE_MEMPCPY
121 # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n)))
127 # if defined __GNUC__ || (defined __STDC__ && __STDC__)
128 # define __P(args) args
130 # define __P(args) ()
132 #endif /* Not __P. */
150 #define TYPE_SIGNED(t) ((t) -1 < 0)
152 /* Bound on length of the string representing an integer value of type t.
153 Subtract one for the sign bit if t is signed;
154 302 / 1000 is log10 (2) rounded up;
155 add one for integer division truncation;
156 add one more for a minus sign if t is signed. */
157 #define INT_STRLEN_BOUND(t) \
158 ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
160 #define TM_YEAR_BASE 1900
163 /* Nonzero if YEAR is a leap year (every 4 years,
164 except every 100th isn't, and every 400th is). */
165 # define __isleap(year) \
166 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
171 # define my_strftime_gmtime_r __gmtime_r
172 # define my_strftime_localtime_r __localtime_r
173 # define tzname __tzname
174 # define tzset __tzset
177 /* If we're a strftime substitute in a GNU program, then prefer gmtime
178 to gmtime_r, since many gmtime_r implementations are buggy.
179 Similarly for localtime_r. */
181 # if ! HAVE_TM_GMTOFF
182 static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *));
184 my_strftime_gmtime_r (t, tp)
188 struct tm *l = gmtime (t);
195 static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *));
197 my_strftime_localtime_r (t, tp)
201 struct tm *l = localtime (t);
207 # endif /* ! HAVE_TM_GMTOFF */
208 #endif /* ! defined _LIBC */
211 #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC
212 /* Some systems lack the `memset' function and we don't want to
213 introduce additional dependencies. */
214 /* The SGI compiler reportedly barfs on the trailing null
215 if we use a string constant as the initializer. 28 June 1997, rms. */
216 static const CHAR_T spaces[16] = /* " " */
218 L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),
219 L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ')
221 static const CHAR_T zeroes[16] = /* "0000000000000000" */
223 L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),
224 L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0')
227 # define memset_space(P, Len) \
233 int _this = _len > 16 ? 16 : _len; \
234 (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \
240 # define memset_zero(P, Len) \
246 int _this = _len > 16 ? 16 : _len; \
247 (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \
254 # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len))
255 # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len))
257 # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
258 # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len))
266 int _delta = width - _n; \
267 int _incr = _n + (_delta > 0 ? _delta : 0); \
268 if ((size_t) _incr >= maxsize - i) \
274 if (pad == L_('0')) \
275 memset_zero (p, _delta); \
277 memset_space (p, _delta); \
288 memcpy_lowcase (p, (s), _n LOCALE_ARG); \
289 else if (to_uppcase) \
290 memcpy_uppcase (p, (s), _n LOCALE_ARG); \
292 MEMCPY ((PTR) p, (const PTR) (s), _n))
295 # ifndef USE_IN_EXTENDED_LOCALE_MODEL
296 # undef __mbsrtowcs_l
297 # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
299 # define widen(os, ws, l) \
302 const char *__s = os; \
303 memset (&__st, '\0', sizeof (__st)); \
304 l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \
305 ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \
306 (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \
311 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
312 /* We use this code also for the extended locale handling where the
313 function gets as an additional argument the locale which has to be
314 used. To access the values we have to redefine the _NL_CURRENT
316 # define strftime __strftime_l
317 # define wcsftime __wcsftime_l
319 # define _NL_CURRENT(category, item) \
320 (current->values[_NL_ITEM_INDEX (item)].string)
321 # define LOCALE_PARAM , loc
322 # define LOCALE_ARG , loc
323 # define LOCALE_PARAM_DECL __locale_t loc;
324 # define LOCALE_PARAM_PROTO , __locale_t loc
325 # define HELPER_LOCALE_ARG , current
327 # define LOCALE_PARAM
328 # define LOCALE_PARAM_PROTO
330 # define LOCALE_PARAM_DECL
332 # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
334 # define HELPER_LOCALE_ARG
339 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
340 # define TOUPPER(Ch, L) __towupper_l (Ch, L)
341 # define TOLOWER(Ch, L) __towlower_l (Ch, L)
343 # define TOUPPER(Ch, L) towupper (Ch)
344 # define TOLOWER(Ch, L) towlower (Ch)
348 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
349 # define TOUPPER(Ch, L) __toupper_l (Ch, L)
350 # define TOLOWER(Ch, L) __tolower_l (Ch, L)
352 # define TOUPPER(Ch, L) toupper (Ch)
353 # define TOLOWER(Ch, L) tolower (Ch)
356 # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
357 # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
360 /* We don't use `isdigit' here since the locale dependent
361 interpretation is not what we want here. We only need to accept
362 the arabic digits in the ASCII range. One day there is perhaps a
363 more reliable way to accept other sets of digits. */
364 #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
366 static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src,
367 size_t len LOCALE_PARAM_PROTO));
370 memcpy_lowcase (dest, src, len LOCALE_PARAM)
377 dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
381 static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src,
382 size_t len LOCALE_PARAM_PROTO));
385 memcpy_uppcase (dest, src, len LOCALE_PARAM)
392 dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
398 /* Yield the difference between *A and *B,
399 measured in seconds, ignoring leap seconds. */
400 # define tm_diff ftime_tm_diff
401 static int tm_diff __P ((const struct tm *, const struct tm *));
407 /* Compute intervening leap days correctly even if year is negative.
408 Take care to avoid int overflow in leap day calculations,
409 but it's OK to assume that A and B are close to each other. */
410 int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
411 int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
412 int a100 = a4 / 25 - (a4 % 25 < 0);
413 int b100 = b4 / 25 - (b4 % 25 < 0);
414 int a400 = a100 >> 2;
415 int b400 = b100 >> 2;
416 int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
417 int years = a->tm_year - b->tm_year;
418 int days = (365 * years + intervening_leap_days
419 + (a->tm_yday - b->tm_yday));
420 return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
421 + (a->tm_min - b->tm_min))
422 + (a->tm_sec - b->tm_sec));
424 #endif /* ! HAVE_TM_GMTOFF */
428 /* The number of days from the first day of the first ISO week of this
429 year to the year day YDAY with week day WDAY. ISO weeks start on
430 Monday; the first ISO week has the year's first Thursday. YDAY may
431 be as small as YDAY_MINIMUM. */
432 #define ISO_WEEK_START_WDAY 1 /* Monday */
433 #define ISO_WEEK1_WDAY 4 /* Thursday */
434 #define YDAY_MINIMUM (-366)
435 static int iso_week_days __P ((int, int));
440 iso_week_days (yday, wday)
444 /* Add enough to the first operand of % to make it nonnegative. */
445 int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
447 - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
448 + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
452 #if !(defined _NL_CURRENT || HAVE_STRFTIME)
453 static CHAR_T const weekday_name[][10] =
455 L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
456 L_("Thursday"), L_("Friday"), L_("Saturday")
458 static CHAR_T const month_name[][10] =
460 L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
461 L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
462 L_("November"), L_("December")
467 /* When compiling this file, GNU applications can #define my_strftime
468 to a symbol (typically nstrftime) to get an extended strftime with
469 extra arguments UT and NS. Emacs is a special case for now, but
470 this Emacs-specific code can be removed once Emacs's config.h
471 defines my_strftime. */
472 #if defined emacs && !defined my_strftime
473 # define my_strftime nstrftime
477 # define extra_args , ut, ns
478 # define extra_args_spec int ut; int ns;
479 # define extra_args_spec_iso , int ut, int ns
482 # define my_strftime wcsftime
483 # define nl_get_alt_digit _nl_get_walt_digit
485 # define my_strftime strftime
486 # define nl_get_alt_digit _nl_get_alt_digit
489 # define extra_args_spec
490 # define extra_args_spec_iso
491 /* We don't have this information in general. */
496 #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
497 /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
498 Work around this bug by copying *tp before it might be munged. */
499 size_t _strftime_copytm __P ((char *, size_t, const char *,
500 const struct tm * extra_args_spec_iso));
502 my_strftime (s, maxsize, format, tp extra_args)
505 const CHAR_T *format;
511 return _strftime_copytm (s, maxsize, format, &tmcopy extra_args);
514 # define my_strftime _strftime_copytm
518 /* Write information from TP into S according to the format
519 string FORMAT, writing no more that MAXSIZE characters
520 (including the terminating '\0') and returning number of
521 characters written. If S is NULL, nothing will be written
522 anywhere, so to determine how many characters would be
523 written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
525 my_strftime (s, maxsize, format, tp extra_args LOCALE_PARAM)
528 const CHAR_T *format;
533 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
534 struct locale_data *const current = loc->__locales[LC_TIME];
537 int hour12 = tp->tm_hour;
539 /* We cannot make the following values variables since we must delay
540 the evaluation of these values until really needed since some
541 expressions might not be valid in every situation. The `struct tm'
542 might be generated by a strptime() call that initialized
543 only a few elements. Dereference the pointers only if the format
544 requires this. Then it is ok to fail if the pointers are invalid. */
546 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
548 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
550 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
552 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
554 ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \
555 ? NLW(PM_STR) : NLW(AM_STR)))
557 # define aw_len STRLEN (a_wkday)
558 # define am_len STRLEN (a_month)
559 # define ap_len STRLEN (ampm)
562 # define f_wkday (weekday_name[tp->tm_wday])
563 # define f_month (month_name[tp->tm_mon])
564 # define a_wkday f_wkday
565 # define a_month f_month
566 # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
577 #if DO_MULTIBYTE && !defined COMPILE_WIDE
578 const char *format_end = NULL;
583 /* The POSIX test suite assumes that setting
584 the environment variable TZ to a new value before calling strftime()
585 will influence the result (the %Z format) even if the information in
586 TP is computed with a totally different time zone.
587 This is bogus: though POSIX allows bad behavior like this,
588 POSIX does not require it. Do the right thing instead. */
589 zone = (const char *) tp->tm_zone;
594 if (! (zone && *zone))
599 /* POSIX.1 requires that local time zone information be used as
600 though strftime called tzset. */
613 for (f = format; *f != '\0'; ++f)
615 int pad = 0; /* Padding for number ('-', '_', or 0). */
616 int modifier; /* Field modifier ('E', 'O', or 0). */
617 int digits; /* Max digits for numeric format. */
618 int number_value; /* Numeric value to be printed. */
619 int negative_number; /* 1 if the number is negative. */
620 const CHAR_T *subfmt;
622 CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
623 ? INT_STRLEN_BOUND (time_t)
624 : INT_STRLEN_BOUND (int))];
631 #if DO_MULTIBYTE && !defined COMPILE_WIDE
637 case L_('\b'): case L_('\t'): case L_('\n'):
638 case L_('\v'): case L_('\f'): case L_('\r'):
639 case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
640 case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
641 case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
642 case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
643 case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
644 case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
645 case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
646 case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
647 case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
648 case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
649 case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
650 case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
651 case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
652 case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
653 case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
654 case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
655 case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
656 case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
658 /* The C Standard requires these 98 characters (plus '%') to
659 be in the basic execution character set. None of these
660 characters can start a multibyte sequence, so they need
661 not be analyzed further. */
666 /* Copy this multibyte sequence until we reach its end, find
667 an error, or come back to the initial shift state. */
669 mbstate_t mbstate = mbstate_zero;
674 format_end = f + strlen (f) + 1;
675 fsize = format_end - f;
679 size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
684 if (bytes == (size_t) -2)
686 len += strlen (f + len);
690 if (bytes == (size_t) -1)
698 while (! mbsinit (&mbstate));
706 #else /* ! DO_MULTIBYTE */
708 /* Either multibyte encodings are not supported, they are
709 safe for formats, so any non-'%' byte can be copied through,
710 or this is the wide character version. */
717 #endif /* ! DO_MULTIBYTE */
719 /* Check for flags that can modify a format. */
724 /* This influences the number formats. */
731 /* This changes textual output. */
745 /* As a GNU extension we allow to specify the field width. */
751 if (width > INT_MAX / 10
752 || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10))
753 /* Avoid overflow. */
758 width += *f - L_('0');
762 while (ISDIGIT (*f));
765 /* Check for modifiers. */
778 /* Now do the specified format. */
782 #define DO_NUMBER(d, v) \
783 digits = d > width ? d : width; \
784 number_value = v; goto do_number
785 #define DO_NUMBER_SPACEPAD(d, v) \
786 digits = d > width ? d : width; \
787 number_value = v; goto do_number_spacepad
803 #if defined _NL_CURRENT || !HAVE_STRFTIME
804 cpy (aw_len, a_wkday);
807 goto underlying_strftime;
818 #if defined _NL_CURRENT || !HAVE_STRFTIME
819 cpy (STRLEN (f_wkday), f_wkday);
822 goto underlying_strftime;
834 #if defined _NL_CURRENT || !HAVE_STRFTIME
835 cpy (am_len, a_month);
838 goto underlying_strftime;
849 #if defined _NL_CURRENT || !HAVE_STRFTIME
850 cpy (STRLEN (f_month), f_month);
853 goto underlying_strftime;
857 if (modifier == L_('O'))
860 if (! (modifier == 'E'
862 (const CHAR_T *) _NL_CURRENT (LC_TIME,
865 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
868 goto underlying_strftime;
870 subfmt = L_("%a %b %e %H:%M:%S %Y");
876 CHAR_T *old_start = p;
877 size_t len = my_strftime (NULL, (size_t) -1, subfmt,
878 tp extra_args LOCALE_ARG);
879 add (len, my_strftime (p, maxsize - i, subfmt,
880 tp extra_args LOCALE_ARG));
883 while (old_start < p)
885 *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
891 #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
894 /* The relevant information is available only via the
895 underlying strftime implementation, so use that. */
898 char ubuf[1024]; /* enough for any single format in practice */
900 /* Make sure we're calling the actual underlying strftime.
901 In some cases, config.h contains something like
902 "#define strftime rpl_strftime". */
913 len = strftime (ubuf, sizeof ubuf, ufmt, tp);
914 if (len == 0 && ubuf[0] != '\0')
922 if (modifier == L_('O'))
924 if (modifier == L_('E'))
926 #if HAVE_STRUCT_ERA_ENTRY
927 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
931 size_t len = __wcslen (era->era_wname);
932 cpy (len, era->era_wname);
934 size_t len = strlen (era->era_name);
935 cpy (len, era->era_name);
941 goto underlying_strftime;
947 int year = tp->tm_year + TM_YEAR_BASE;
948 DO_NUMBER (1, year / 100 - (year % 100 < 0));
952 if (modifier == L_('O'))
955 if (! (modifier == L_('E')
957 (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
959 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
963 goto underlying_strftime;
971 subfmt = L_("%m/%d/%y");
975 if (modifier == L_('E'))
978 DO_NUMBER (2, tp->tm_mday);
981 if (modifier == L_('E'))
984 DO_NUMBER_SPACEPAD (2, tp->tm_mday);
986 /* All numeric formats set DIGITS and NUMBER_VALUE and then
987 jump to one of these two labels. */
990 /* Force `_' flag unless overridden by `0' or `-' flag. */
991 if (pad != L_('0') && pad != L_('-'))
995 /* Format the number according to the MODIFIER flag. */
997 if (modifier == L_('O') && 0 <= number_value)
1000 /* Get the locale specific alternate representation of
1001 the number NUMBER_VALUE. If none exist NULL is returned. */
1002 const CHAR_T *cp = nl_get_alt_digit (number_value
1007 size_t digitlen = STRLEN (cp);
1016 goto underlying_strftime;
1021 unsigned int u = number_value;
1023 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1024 negative_number = number_value < 0;
1026 if (negative_number)
1030 *--bufp = u % 10 + L_('0');
1031 while ((u /= 10) != 0);
1034 do_number_sign_and_padding:
1035 if (negative_number)
1040 int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
1047 if ((size_t) padding >= maxsize - i)
1051 memset_space (p, padding);
1053 width = width > padding ? width - padding : 0;
1057 if ((size_t) digits >= maxsize - i)
1060 if (negative_number)
1070 memset_zero (p, padding);
1077 cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
1083 subfmt = L_("%Y-%m-%d");
1087 if (modifier == L_('E'))
1090 DO_NUMBER (2, tp->tm_hour);
1093 if (modifier == L_('E'))
1096 DO_NUMBER (2, hour12);
1098 case L_('k'): /* GNU extension. */
1099 if (modifier == L_('E'))
1102 DO_NUMBER_SPACEPAD (2, tp->tm_hour);
1104 case L_('l'): /* GNU extension. */
1105 if (modifier == L_('E'))
1108 DO_NUMBER_SPACEPAD (2, hour12);
1111 if (modifier == L_('E'))
1114 DO_NUMBER (3, 1 + tp->tm_yday);
1117 if (modifier == L_('E'))
1120 DO_NUMBER (2, tp->tm_min);
1123 if (modifier == L_('E'))
1126 DO_NUMBER (2, tp->tm_mon + 1);
1129 case L_('N'): /* GNU extension. */
1130 if (modifier == L_('E'))
1136 /* Take an explicit width less than 9 as a precision. */
1138 for (j = width; j < 9; j++)
1142 DO_NUMBER (9, number_value);
1146 add (1, *p = L_('\n'));
1151 #if !defined _NL_CURRENT && HAVE_STRFTIME
1152 format_char = L_('p');
1162 #if defined _NL_CURRENT || !HAVE_STRFTIME
1166 goto underlying_strftime;
1170 subfmt = L_("%H:%M");
1175 if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
1179 subfmt = L_("%I:%M:%S %p");
1183 if (modifier == L_('E'))
1186 DO_NUMBER (2, tp->tm_sec);
1188 case L_('s'): /* GNU extension. */
1196 /* Generate string value for T using time_t arithmetic;
1197 this works even if sizeof (long) < sizeof (time_t). */
1199 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1200 negative_number = t < 0;
1207 if (negative_number)
1211 /* Adjust if division truncates to minus infinity. */
1212 if (0 < -1 % 10 && d < 0)
1219 *--bufp = d + L_('0');
1224 goto do_number_sign_and_padding;
1228 if (modifier == L_('O'))
1231 if (! (modifier == L_('E')
1233 (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
1235 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
1239 goto underlying_strftime;
1245 subfmt = L_("%H:%M:%S");
1249 add (1, *p = L_('\t'));
1253 DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
1256 if (modifier == L_('E'))
1259 DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
1264 if (modifier == L_('E'))
1267 int year = tp->tm_year + TM_YEAR_BASE;
1268 int days = iso_week_days (tp->tm_yday, tp->tm_wday);
1272 /* This ISO week belongs to the previous year. */
1274 days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
1279 int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
1283 /* This ISO week belongs to the next year. */
1292 DO_NUMBER (2, (year % 100 + 100) % 100);
1295 DO_NUMBER (1, year);
1298 DO_NUMBER (2, days / 7 + 1);
1303 if (modifier == L_('E'))
1306 DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
1309 if (modifier == L_('E'))
1312 DO_NUMBER (1, tp->tm_wday);
1315 if (modifier == 'E')
1317 #if HAVE_STRUCT_ERA_ENTRY
1318 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1321 # ifdef COMPILE_WIDE
1322 subfmt = era->era_wformat;
1324 subfmt = era->era_format;
1330 goto underlying_strftime;
1334 if (modifier == L_('O'))
1337 DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
1340 if (modifier == L_('E'))
1342 #if HAVE_STRUCT_ERA_ENTRY
1343 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1346 int delta = tp->tm_year - era->start_date[0];
1347 DO_NUMBER (1, (era->offset
1348 + delta * era->absolute_direction));
1352 goto underlying_strftime;
1356 DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
1366 /* The tzset() call might have changed the value. */
1367 if (!(zone && *zone) && tp->tm_isdst >= 0)
1368 zone = tzname[tp->tm_isdst];
1375 /* The zone string is always given in multibyte form. We have
1376 to transform it first. */
1379 widen (zone, wczone, len);
1383 cpy (strlen (zone), zone);
1388 if (tp->tm_isdst < 0)
1394 diff = tp->tm_gmtoff;
1407 if (lt == (time_t) -1)
1409 /* mktime returns -1 for errors, but -1 is also a
1410 valid time_t value. Check whether an error really
1414 if (! my_strftime_localtime_r (<, &tm)
1415 || ((ltm.tm_sec ^ tm.tm_sec)
1416 | (ltm.tm_min ^ tm.tm_min)
1417 | (ltm.tm_hour ^ tm.tm_hour)
1418 | (ltm.tm_mday ^ tm.tm_mday)
1419 | (ltm.tm_mon ^ tm.tm_mon)
1420 | (ltm.tm_year ^ tm.tm_year)))
1424 if (! my_strftime_gmtime_r (<, >m))
1427 diff = tm_diff (<m, >m);
1433 add (1, *p = L_('-'));
1437 add (1, *p = L_('+'));
1440 DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
1443 case L_('\0'): /* GNU extension: % at end of format. */
1447 /* Unknown format; output the format, including the '%',
1448 since this is most likely the right thing to do if a
1449 multibyte string has been misparsed. */
1453 for (flen = 1; f[1 - flen] != L_('%'); flen++)
1455 cpy (flen, &f[1 - flen]);
1461 if (p && maxsize != 0)
1466 libc_hidden_def (my_strftime)
1471 /* For Emacs we have a separate interface which corresponds to the normal
1472 strftime function plus the ut argument, but without the ns argument. */
1474 emacs_strftimeu (s, maxsize, format, tp, ut)
1478 const struct tm *tp;
1481 return my_strftime (s, maxsize, format, tp, ut, 0);