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 (i + _incr >= maxsize) \
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 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
296 # define widen(os, ws, l) \
299 const char *__s = os; \
300 memset (&__st, '\0', sizeof (__st)); \
301 l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \
302 ws = alloca ((l + 1) * sizeof (wchar_t)); \
303 (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \
306 # define widen(os, ws, l) \
309 const char *__s = os; \
310 memset (&__st, '\0', sizeof (__st)); \
311 l = __mbsrtowcs (NULL, &__s, 0, &__st); \
312 ws = alloca ((l + 1) * sizeof (wchar_t)); \
313 (void) __mbsrtowcs (ws, &__s, l, &__st); \
319 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
320 /* We use this code also for the extended locale handling where the
321 function gets as an additional argument the locale which has to be
322 used. To access the values we have to redefine the _NL_CURRENT
324 # define strftime __strftime_l
325 # define wcsftime __wcsftime_l
327 # define _NL_CURRENT(category, item) \
328 (current->values[_NL_ITEM_INDEX (item)].string)
329 # define LOCALE_PARAM , loc
330 # define LOCALE_ARG , loc
331 # define LOCALE_PARAM_DECL __locale_t loc;
332 # define LOCALE_PARAM_PROTO , __locale_t loc
333 # define HELPER_LOCALE_ARG , current
335 # define LOCALE_PARAM
336 # define LOCALE_PARAM_PROTO
338 # define LOCALE_PARAM_DECL
340 # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
342 # define HELPER_LOCALE_ARG
347 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
348 # define TOUPPER(Ch, L) __towupper_l (Ch, L)
349 # define TOLOWER(Ch, L) __towlower_l (Ch, L)
351 # define TOUPPER(Ch, L) towupper (Ch)
352 # define TOLOWER(Ch, L) towlower (Ch)
356 # ifdef USE_IN_EXTENDED_LOCALE_MODEL
357 # define TOUPPER(Ch, L) __toupper_l (Ch, L)
358 # define TOLOWER(Ch, L) __tolower_l (Ch, L)
360 # define TOUPPER(Ch, L) toupper (Ch)
361 # define TOLOWER(Ch, L) tolower (Ch)
364 # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
365 # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
368 /* We don't use `isdigit' here since the locale dependent
369 interpretation is not what we want here. We only need to accept
370 the arabic digits in the ASCII range. One day there is perhaps a
371 more reliable way to accept other sets of digits. */
372 #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
374 static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src,
375 size_t len LOCALE_PARAM_PROTO));
378 memcpy_lowcase (dest, src, len LOCALE_PARAM)
385 dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
389 static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src,
390 size_t len LOCALE_PARAM_PROTO));
393 memcpy_uppcase (dest, src, len LOCALE_PARAM)
400 dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
406 /* Yield the difference between *A and *B,
407 measured in seconds, ignoring leap seconds. */
408 # define tm_diff ftime_tm_diff
409 static int tm_diff __P ((const struct tm *, const struct tm *));
415 /* Compute intervening leap days correctly even if year is negative.
416 Take care to avoid int overflow in leap day calculations,
417 but it's OK to assume that A and B are close to each other. */
418 int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
419 int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
420 int a100 = a4 / 25 - (a4 % 25 < 0);
421 int b100 = b4 / 25 - (b4 % 25 < 0);
422 int a400 = a100 >> 2;
423 int b400 = b100 >> 2;
424 int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
425 int years = a->tm_year - b->tm_year;
426 int days = (365 * years + intervening_leap_days
427 + (a->tm_yday - b->tm_yday));
428 return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
429 + (a->tm_min - b->tm_min))
430 + (a->tm_sec - b->tm_sec));
432 #endif /* ! HAVE_TM_GMTOFF */
436 /* The number of days from the first day of the first ISO week of this
437 year to the year day YDAY with week day WDAY. ISO weeks start on
438 Monday; the first ISO week has the year's first Thursday. YDAY may
439 be as small as YDAY_MINIMUM. */
440 #define ISO_WEEK_START_WDAY 1 /* Monday */
441 #define ISO_WEEK1_WDAY 4 /* Thursday */
442 #define YDAY_MINIMUM (-366)
443 static int iso_week_days __P ((int, int));
448 iso_week_days (yday, wday)
452 /* Add enough to the first operand of % to make it nonnegative. */
453 int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
455 - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
456 + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
460 #if !(defined _NL_CURRENT || HAVE_STRFTIME)
461 static CHAR_T const weekday_name[][10] =
463 L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
464 L_("Thursday"), L_("Friday"), L_("Saturday")
466 static CHAR_T const month_name[][10] =
468 L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
469 L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
470 L_("November"), L_("December")
475 /* When compiling this file, GNU applications can #define my_strftime
476 to a symbol (typically nstrftime) to get an extended strftime with
477 extra arguments UT and NS. Emacs is a special case for now, but
478 this Emacs-specific code can be removed once Emacs's config.h
479 defines my_strftime. */
480 #if defined emacs && !defined my_strftime
481 # define my_strftime nstrftime
485 # define extra_args , ut, ns
486 # define extra_args_spec int ut; int ns;
487 # define extra_args_spec_iso , int ut, int ns
490 # define my_strftime wcsftime
492 # define my_strftime strftime
495 # define extra_args_spec
496 # define extra_args_spec_iso
497 /* We don't have this information in general. */
502 #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
503 /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
504 Work around this bug by copying *tp before it might be munged. */
505 size_t _strftime_copytm __P ((char *, size_t, const char *,
506 const struct tm * extra_args_spec_iso));
508 my_strftime (s, maxsize, format, tp extra_args)
511 const CHAR_T *format;
517 return _strftime_copytm (s, maxsize, format, &tmcopy extra_args);
520 # define my_strftime _strftime_copytm
524 /* Write information from TP into S according to the format
525 string FORMAT, writing no more that MAXSIZE characters
526 (including the terminating '\0') and returning number of
527 characters written. If S is NULL, nothing will be written
528 anywhere, so to determine how many characters would be
529 written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
531 my_strftime (s, maxsize, format, tp extra_args LOCALE_PARAM)
534 const CHAR_T *format;
539 #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
540 struct locale_data *const current = loc->__locales[LC_TIME];
543 int hour12 = tp->tm_hour;
545 /* We cannot make the following values variables since we must delay
546 the evaluation of these values until really needed since some
547 expressions might not be valid in every situation. The `struct tm'
548 might be generated by a strptime() call that initialized
549 only a few elements. Dereference the pointers only if the format
550 requires this. Then it is ok to fail if the pointers are invalid. */
552 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
554 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
556 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
558 ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
560 ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \
561 ? NLW(PM_STR) : NLW(AM_STR)))
563 # define aw_len STRLEN (a_wkday)
564 # define am_len STRLEN (a_month)
565 # define ap_len STRLEN (ampm)
568 # define f_wkday (weekday_name[tp->tm_wday])
569 # define f_month (month_name[tp->tm_mon])
570 # define a_wkday f_wkday
571 # define a_month f_month
572 # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
583 #if DO_MULTIBYTE && !defined COMPILE_WIDE
584 const char *format_end = NULL;
589 /* The POSIX test suite assumes that setting
590 the environment variable TZ to a new value before calling strftime()
591 will influence the result (the %Z format) even if the information in
592 TP is computed with a totally different time zone.
593 This is bogus: though POSIX allows bad behavior like this,
594 POSIX does not require it. Do the right thing instead. */
595 zone = (const char *) tp->tm_zone;
600 if (! (zone && *zone))
605 /* POSIX.1 requires that local time zone information be used as
606 though strftime called tzset. */
619 for (f = format; *f != '\0'; ++f)
621 int pad = 0; /* Padding for number ('-', '_', or 0). */
622 int modifier; /* Field modifier ('E', 'O', or 0). */
623 int digits; /* Max digits for numeric format. */
624 int number_value; /* Numeric value to be printed. */
625 int negative_number; /* 1 if the number is negative. */
626 const CHAR_T *subfmt;
628 CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
629 ? INT_STRLEN_BOUND (time_t)
630 : INT_STRLEN_BOUND (int))];
637 #if DO_MULTIBYTE && !defined COMPILE_WIDE
643 case L_('\b'): case L_('\t'): case L_('\n'):
644 case L_('\v'): case L_('\f'): case L_('\r'):
645 case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
646 case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
647 case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
648 case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
649 case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
650 case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
651 case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
652 case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
653 case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
654 case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
655 case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
656 case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
657 case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
658 case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
659 case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
660 case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
661 case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
662 case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
664 /* The C Standard requires these 98 characters (plus '%') to
665 be in the basic execution character set. None of these
666 characters can start a multibyte sequence, so they need
667 not be analyzed further. */
672 /* Copy this multibyte sequence until we reach its end, find
673 an error, or come back to the initial shift state. */
675 mbstate_t mbstate = mbstate_zero;
680 format_end = f + strlen (f) + 1;
681 fsize = format_end - f;
685 size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
690 if (bytes == (size_t) -2)
692 len += strlen (f + len);
696 if (bytes == (size_t) -1)
704 while (! mbsinit (&mbstate));
712 #else /* ! DO_MULTIBYTE */
714 /* Either multibyte encodings are not supported, they are
715 safe for formats, so any non-'%' byte can be copied through,
716 or this is the wide character version. */
723 #endif /* ! DO_MULTIBYTE */
725 /* Check for flags that can modify a format. */
730 /* This influences the number formats. */
737 /* This changes textual output. */
751 /* As a GNU extension we allow to specify the field width. */
758 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 = width == -1 ? d : width; \
783 number_value = v; goto do_number
784 #define DO_NUMBER_SPACEPAD(d, v) \
785 digits = width == -1 ? 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 overwritten by `0' flag. */
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 # ifdef COMPILE_WIDE
1002 const wchar_t *cp = _nl_get_walt_digit (number_value
1005 const char *cp = _nl_get_alt_digit (number_value
1011 size_t digitlen = STRLEN (cp);
1020 goto underlying_strftime;
1025 unsigned int u = number_value;
1027 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1028 negative_number = number_value < 0;
1030 if (negative_number)
1034 *--bufp = u % 10 + L_('0');
1035 while ((u /= 10) != 0);
1038 do_number_sign_and_padding:
1039 if (negative_number)
1044 int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
1049 while (0 < padding--)
1054 bufp += negative_number;
1055 while (0 < padding--)
1057 if (negative_number)
1062 cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
1068 subfmt = L_("%Y-%m-%d");
1072 if (modifier == L_('E'))
1075 DO_NUMBER (2, tp->tm_hour);
1078 if (modifier == L_('E'))
1081 DO_NUMBER (2, hour12);
1083 case L_('k'): /* GNU extension. */
1084 if (modifier == L_('E'))
1087 DO_NUMBER_SPACEPAD (2, tp->tm_hour);
1089 case L_('l'): /* GNU extension. */
1090 if (modifier == L_('E'))
1093 DO_NUMBER_SPACEPAD (2, hour12);
1096 if (modifier == L_('E'))
1099 DO_NUMBER (3, 1 + tp->tm_yday);
1102 if (modifier == L_('E'))
1105 DO_NUMBER (2, tp->tm_min);
1108 if (modifier == L_('E'))
1111 DO_NUMBER (2, tp->tm_mon + 1);
1114 case L_('N'): /* GNU extension. */
1115 if (modifier == L_('E'))
1121 /* Take an explicit width less than 9 as a precision. */
1123 for (j = width; j < 9; j++)
1127 DO_NUMBER (9, number_value);
1131 add (1, *p = L_('\n'));
1136 #if !defined _NL_CURRENT && HAVE_STRFTIME
1137 format_char = L_('p');
1147 #if defined _NL_CURRENT || !HAVE_STRFTIME
1151 goto underlying_strftime;
1155 subfmt = L_("%H:%M");
1160 if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
1164 subfmt = L_("%I:%M:%S %p");
1168 if (modifier == L_('E'))
1171 DO_NUMBER (2, tp->tm_sec);
1173 case L_('s'): /* GNU extension. */
1181 /* Generate string value for T using time_t arithmetic;
1182 this works even if sizeof (long) < sizeof (time_t). */
1184 bufp = buf + sizeof (buf) / sizeof (buf[0]);
1185 negative_number = t < 0;
1192 if (negative_number)
1196 /* Adjust if division truncates to minus infinity. */
1197 if (0 < -1 % 10 && d < 0)
1204 *--bufp = d + L_('0');
1209 goto do_number_sign_and_padding;
1213 if (modifier == L_('O'))
1216 if (! (modifier == L_('E')
1218 (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
1220 subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
1224 goto underlying_strftime;
1230 subfmt = L_("%H:%M:%S");
1234 add (1, *p = L_('\t'));
1238 DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
1241 if (modifier == L_('E'))
1244 DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
1249 if (modifier == L_('E'))
1252 int year = tp->tm_year + TM_YEAR_BASE;
1253 int days = iso_week_days (tp->tm_yday, tp->tm_wday);
1257 /* This ISO week belongs to the previous year. */
1259 days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
1264 int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
1268 /* This ISO week belongs to the next year. */
1277 DO_NUMBER (2, (year % 100 + 100) % 100);
1280 DO_NUMBER (1, year);
1283 DO_NUMBER (2, days / 7 + 1);
1288 if (modifier == L_('E'))
1291 DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
1294 if (modifier == L_('E'))
1297 DO_NUMBER (1, tp->tm_wday);
1300 if (modifier == 'E')
1302 #if HAVE_STRUCT_ERA_ENTRY
1303 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1306 # ifdef COMPILE_WIDE
1307 subfmt = era->era_wformat;
1309 subfmt = era->era_format;
1315 goto underlying_strftime;
1319 if (modifier == L_('O'))
1322 DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
1325 if (modifier == L_('E'))
1327 #if HAVE_STRUCT_ERA_ENTRY
1328 struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
1331 int delta = tp->tm_year - era->start_date[0];
1332 DO_NUMBER (1, (era->offset
1333 + delta * era->absolute_direction));
1337 goto underlying_strftime;
1341 DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
1351 /* The tzset() call might have changed the value. */
1352 if (!(zone && *zone) && tp->tm_isdst >= 0)
1353 zone = tzname[tp->tm_isdst];
1360 /* The zone string is always given in multibyte form. We have
1361 to transform it first. */
1364 widen (zone, wczone, len);
1368 cpy (strlen (zone), zone);
1373 if (tp->tm_isdst < 0)
1379 diff = tp->tm_gmtoff;
1392 if (lt == (time_t) -1)
1394 /* mktime returns -1 for errors, but -1 is also a
1395 valid time_t value. Check whether an error really
1399 if (! my_strftime_localtime_r (<, &tm)
1400 || ((ltm.tm_sec ^ tm.tm_sec)
1401 | (ltm.tm_min ^ tm.tm_min)
1402 | (ltm.tm_hour ^ tm.tm_hour)
1403 | (ltm.tm_mday ^ tm.tm_mday)
1404 | (ltm.tm_mon ^ tm.tm_mon)
1405 | (ltm.tm_year ^ tm.tm_year)))
1409 if (! my_strftime_gmtime_r (<, >m))
1412 diff = tm_diff (<m, >m);
1418 add (1, *p = L_('-'));
1422 add (1, *p = L_('+'));
1425 DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
1428 case L_('\0'): /* GNU extension: % at end of format. */
1432 /* Unknown format; output the format, including the '%',
1433 since this is most likely the right thing to do if a
1434 multibyte string has been misparsed. */
1438 for (flen = 1; f[1 - flen] != L_('%'); flen++)
1440 cpy (flen, &f[1 - flen]);
1446 if (p && maxsize != 0)
1451 libc_hidden_def (my_strftime)
1456 /* For Emacs we have a separate interface which corresponds to the normal
1457 strftime function plus the ut argument, but without the ns argument. */
1459 emacs_strftimeu (s, maxsize, format, tp, ut)
1463 const struct tm *tp;
1466 return my_strftime (s, maxsize, format, tp, ut, 0);