diff options
Diffstat (limited to 'time/strftime.c')
| -rw-r--r-- | time/strftime.c | 1421 |
1 files changed, 6 insertions, 1415 deletions
diff --git a/time/strftime.c b/time/strftime.c index 04250317e3..5a4917e352 100644 --- a/time/strftime.c +++ b/time/strftime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991-1999, 2000, 2001, 2002, 2003 +/* Copyright (C) 1991-1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -17,1422 +17,13 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif +#include <time.h> +#include <locale/localeinfo.h> -#ifdef _LIBC -# define HAVE_LIMITS_H 1 -# define HAVE_MBLEN 1 -# define HAVE_MBRLEN 1 -# define HAVE_STRUCT_ERA_ENTRY 1 -# define HAVE_TM_GMTOFF 1 -# define HAVE_TM_ZONE 1 -# define HAVE_TZNAME 1 -# define HAVE_TZSET 1 -# define MULTIBYTE_IS_FORMAT_SAFE 1 -# define STDC_HEADERS 1 -# include "../locale/localeinfo.h" -#endif -#if defined emacs && !defined HAVE_BCOPY -# define HAVE_MEMCPY 1 -#endif - -#include <ctype.h> -#include <sys/types.h> /* Some systems define `time_t' here. */ - -#ifdef TIME_WITH_SYS_TIME -# include <sys/time.h> -# include <time.h> -#else -# ifdef HAVE_SYS_TIME_H -# include <sys/time.h> -# else -# include <time.h> -# endif -#endif -#if HAVE_TZNAME -extern char *tzname[]; -#endif - -/* Do multibyte processing if multibytes are supported, unless - multibyte sequences are safe in formats. Multibyte sequences are - safe if they cannot contain byte sequences that look like format - conversion specifications. The GNU C Library uses UTF8 multibyte - encoding, which is safe for formats, but strftime.c can be used - with other C libraries that use unsafe encodings. */ -#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) - -#if DO_MULTIBYTE -# if HAVE_MBRLEN -# include <wchar.h> -# else - /* Simulate mbrlen with mblen as best we can. */ -# define mbstate_t int -# define mbrlen(s, n, ps) mblen (s, n) -# define mbsinit(ps) (*(ps) == 0) -# endif - static const mbstate_t mbstate_zero; -#endif - -#if HAVE_LIMITS_H -# include <limits.h> -#endif - -#if STDC_HEADERS -# include <stddef.h> -# include <stdlib.h> -# include <string.h> -#else -# ifndef HAVE_MEMCPY -# define memcpy(d, s, n) bcopy ((s), (d), (n)) -# endif -#endif - -#ifdef COMPILE_WIDE -# include <endian.h> -# define CHAR_T wchar_t -# define UCHAR_T unsigned int -# define L_(Str) L##Str -# define NLW(Sym) _NL_W##Sym - -# define MEMCPY(d, s, n) __wmemcpy (d, s, n) -# define STRLEN(s) __wcslen (s) - -#else -# define CHAR_T char -# define UCHAR_T unsigned char -# define L_(Str) Str -# define NLW(Sym) Sym - -# if !defined STDC_HEADERS && !defined HAVE_MEMCPY -# define MEMCPY(d, s, n) bcopy ((s), (d), (n)) -# else -# define MEMCPY(d, s, n) memcpy ((d), (s), (n)) -# endif -# define STRLEN(s) strlen (s) - -# ifdef _LIBC -# define MEMPCPY(d, s, n) __mempcpy (d, s, n) -# else -# ifndef HAVE_MEMPCPY -# define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) -# endif -# endif -#endif - -#ifndef __P -# if defined __GNUC__ || (defined __STDC__ && __STDC__) -# define __P(args) args -# else -# define __P(args) () -# endif /* GCC. */ -#endif /* Not __P. */ - -#ifndef PTR -# ifdef __STDC__ -# define PTR void * -# else -# define PTR char * -# endif -#endif - -#ifndef CHAR_BIT -# define CHAR_BIT 8 -#endif - -#ifndef NULL -# define NULL 0 -#endif - -#define TYPE_SIGNED(t) ((t) -1 < 0) - -/* Bound on length of the string representing an integer value of type t. - Subtract one for the sign bit if t is signed; - 302 / 1000 is log10 (2) rounded up; - add one for integer division truncation; - add one more for a minus sign if t is signed. */ -#define INT_STRLEN_BOUND(t) \ - ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) - -#define TM_YEAR_BASE 1900 - -#ifndef __isleap -/* Nonzero if YEAR is a leap year (every 4 years, - except every 100th isn't, and every 400th is). */ -# define __isleap(year) \ - ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) -#endif - - -#ifdef _LIBC -# define tzname __tzname -# define tzset __tzset -#endif - -#if !HAVE_TM_GMTOFF -/* Portable standalone applications should supply a "time_r.h" that - declares a POSIX-compliant localtime_r, for the benefit of older - implementations that lack localtime_r or have a nonstandard one. - Similarly for gmtime_r. See the gnulib time_r module for one way - to implement this. */ -# include "time_r.h" -# undef __gmtime_r -# undef __localtime_r -# define __gmtime_r gmtime_r -# define __localtime_r localtime_r -#endif - - -#if !defined memset && !defined HAVE_MEMSET && !defined _LIBC -/* Some systems lack the `memset' function and we don't want to - introduce additional dependencies. */ -/* The SGI compiler reportedly barfs on the trailing null - if we use a string constant as the initializer. 28 June 1997, rms. */ -static const CHAR_T spaces[16] = /* " " */ -{ - L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '), - L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ') -}; -static const CHAR_T zeroes[16] = /* "0000000000000000" */ -{ - L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'), - L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0') -}; - -# define memset_space(P, Len) \ - do { \ - int _len = (Len); \ - \ - do \ - { \ - int _this = _len > 16 ? 16 : _len; \ - (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \ - _len -= _this; \ - } \ - while (_len > 0); \ - } while (0) - -# define memset_zero(P, Len) \ - do { \ - int _len = (Len); \ - \ - do \ - { \ - int _this = _len > 16 ? 16 : _len; \ - (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \ - _len -= _this; \ - } \ - while (_len > 0); \ - } while (0) -#else -# ifdef COMPILE_WIDE -# define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len)) -# define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len)) -# else -# define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) -# define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) -# endif -#endif - -#define add(n, f) \ - do \ - { \ - int _n = (n); \ - int _delta = width - _n; \ - int _incr = _n + (_delta > 0 ? _delta : 0); \ - if ((size_t) _incr >= maxsize - i) \ - return 0; \ - if (p) \ - { \ - if (_delta > 0) \ - { \ - if (pad == L_('0')) \ - memset_zero (p, _delta); \ - else \ - memset_space (p, _delta); \ - } \ - f; \ - p += _n; \ - } \ - i += _incr; \ - } while (0) - -#define cpy(n, s) \ - add ((n), \ - if (to_lowcase) \ - memcpy_lowcase (p, (s), _n LOCALE_ARG); \ - else if (to_uppcase) \ - memcpy_uppcase (p, (s), _n LOCALE_ARG); \ - else \ - MEMCPY ((PTR) p, (const PTR) (s), _n)) - -#ifdef COMPILE_WIDE -# ifndef USE_IN_EXTENDED_LOCALE_MODEL -# undef __mbsrtowcs_l -# define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) -# endif -# define widen(os, ws, l) \ - { \ - mbstate_t __st; \ - const char *__s = os; \ - memset (&__st, '\0', sizeof (__st)); \ - l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ - ws = alloca ((l + 1) * sizeof (wchar_t)); \ - (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ - } -#endif - - -#if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL -/* We use this code also for the extended locale handling where the - function gets as an additional argument the locale which has to be - used. To access the values we have to redefine the _NL_CURRENT - macro. */ -# define strftime __strftime_l -# define wcsftime __wcsftime_l -# undef _NL_CURRENT -# define _NL_CURRENT(category, item) \ - (current->values[_NL_ITEM_INDEX (item)].string) -# define LOCALE_PARAM , loc -# define LOCALE_ARG , loc -# define LOCALE_PARAM_DECL __locale_t loc; -# define LOCALE_PARAM_PROTO , __locale_t loc -# define HELPER_LOCALE_ARG , current -#else -# define LOCALE_PARAM -# define LOCALE_PARAM_PROTO -# define LOCALE_ARG -# define LOCALE_PARAM_DECL -# ifdef _LIBC -# define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) -# else -# define HELPER_LOCALE_ARG -# endif -#endif - -#ifdef COMPILE_WIDE -# ifdef USE_IN_EXTENDED_LOCALE_MODEL -# define TOUPPER(Ch, L) __towupper_l (Ch, L) -# define TOLOWER(Ch, L) __towlower_l (Ch, L) -# else -# define TOUPPER(Ch, L) towupper (Ch) -# define TOLOWER(Ch, L) towlower (Ch) -# endif -#else -# ifdef _LIBC -# ifdef USE_IN_EXTENDED_LOCALE_MODEL -# define TOUPPER(Ch, L) __toupper_l (Ch, L) -# define TOLOWER(Ch, L) __tolower_l (Ch, L) -# else -# define TOUPPER(Ch, L) toupper (Ch) -# define TOLOWER(Ch, L) tolower (Ch) -# endif -# else -# define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch)) -# define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch)) -# endif -#endif -/* We don't use `isdigit' here since the locale dependent - interpretation is not what we want here. We only need to accept - the arabic digits in the ASCII range. One day there is perhaps a - more reliable way to accept other sets of digits. */ -#define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) - -static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src, - size_t len LOCALE_PARAM_PROTO)); - -static CHAR_T * -memcpy_lowcase (dest, src, len LOCALE_PARAM) - CHAR_T *dest; - const CHAR_T *src; - size_t len; - LOCALE_PARAM_DECL -{ - while (len-- > 0) - dest[len] = TOLOWER ((UCHAR_T) src[len], loc); - return dest; -} - -static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src, - size_t len LOCALE_PARAM_PROTO)); - -static CHAR_T * -memcpy_uppcase (dest, src, len LOCALE_PARAM) - CHAR_T *dest; - const CHAR_T *src; - size_t len; - LOCALE_PARAM_DECL -{ - while (len-- > 0) - dest[len] = TOUPPER ((UCHAR_T) src[len], loc); - return dest; -} - - -#if ! HAVE_TM_GMTOFF -/* Yield the difference between *A and *B, - measured in seconds, ignoring leap seconds. */ -# define tm_diff ftime_tm_diff -static int tm_diff __P ((const struct tm *, const struct tm *)); -static int -tm_diff (a, b) - const struct tm *a; - const struct tm *b; -{ - /* Compute intervening leap days correctly even if year is negative. - Take care to avoid int overflow in leap day calculations, - but it's OK to assume that A and B are close to each other. */ - int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); - int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); - int a100 = a4 / 25 - (a4 % 25 < 0); - int b100 = b4 / 25 - (b4 % 25 < 0); - int a400 = a100 >> 2; - int b400 = b100 >> 2; - int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); - int years = a->tm_year - b->tm_year; - int days = (365 * years + intervening_leap_days - + (a->tm_yday - b->tm_yday)); - return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) - + (a->tm_min - b->tm_min)) - + (a->tm_sec - b->tm_sec)); -} -#endif /* ! HAVE_TM_GMTOFF */ - - - -/* The number of days from the first day of the first ISO week of this - year to the year day YDAY with week day WDAY. ISO weeks start on - Monday; the first ISO week has the year's first Thursday. YDAY may - be as small as YDAY_MINIMUM. */ -#define ISO_WEEK_START_WDAY 1 /* Monday */ -#define ISO_WEEK1_WDAY 4 /* Thursday */ -#define YDAY_MINIMUM (-366) -static int iso_week_days __P ((int, int)); -#ifdef __GNUC__ -__inline__ -#endif -static int -iso_week_days (yday, wday) - int yday; - int wday; -{ - /* Add enough to the first operand of % to make it nonnegative. */ - int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; - return (yday - - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 - + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); -} - - -#if !(defined _NL_CURRENT || HAVE_STRFTIME) -static CHAR_T const weekday_name[][10] = - { - L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"), - L_("Thursday"), L_("Friday"), L_("Saturday") - }; -static CHAR_T const month_name[][10] = - { - L_("January"), L_("February"), L_("March"), L_("April"), L_("May"), - L_("June"), L_("July"), L_("August"), L_("September"), L_("October"), - L_("November"), L_("December") - }; -#endif - - -#ifdef emacs -# define my_strftime emacs_strftimeu -# define ut_argument , ut -# define ut_argument_spec int ut; -# define ut_argument_spec_iso , int ut -#else -# ifdef COMPILE_WIDE -# define my_strftime wcsftime -# define nl_get_alt_digit _nl_get_walt_digit -# else -# define my_strftime strftime -# define nl_get_alt_digit _nl_get_alt_digit -# endif -# define ut_argument -# define ut_argument_spec -# define ut_argument_spec_iso -/* We don't have this information in general. */ -# define ut 0 -#endif - -#if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET - /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. - Work around this bug by copying *tp before it might be munged. */ - size_t _strftime_copytm __P ((char *, size_t, const char *, - const struct tm * ut_argument_spec_iso)); - size_t - my_strftime (s, maxsize, format, tp ut_argument) - CHAR_T *s; - size_t maxsize; - const CHAR_T *format; - const struct tm *tp; - ut_argument_spec - { - struct tm tmcopy; - tmcopy = *tp; - return _strftime_copytm (s, maxsize, format, &tmcopy ut_argument); - } -# undef my_strftime -# define my_strftime _strftime_copytm -#endif - - -/* Write information from TP into S according to the format - string FORMAT, writing no more that MAXSIZE characters - (including the terminating '\0') and returning number of - characters written. If S is NULL, nothing will be written - anywhere, so to determine how many characters would be - written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ -size_t -my_strftime (s, maxsize, format, tp ut_argument LOCALE_PARAM) - CHAR_T *s; - size_t maxsize; - const CHAR_T *format; - const struct tm *tp; - ut_argument_spec - LOCALE_PARAM_DECL -{ -#if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL - struct locale_data *const current = loc->__locales[LC_TIME]; -#endif - - int hour12 = tp->tm_hour; -#ifdef _NL_CURRENT - /* We cannot make the following values variables since we must delay - the evaluation of these values until really needed since some - expressions might not be valid in every situation. The `struct tm' - might be generated by a strptime() call that initialized - only a few elements. Dereference the pointers only if the format - requires this. Then it is ok to fail if the pointers are invalid. */ -# define a_wkday \ - ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) -# define f_wkday \ - ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) -# define a_month \ - ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) -# define f_month \ - ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) -# define ampm \ - ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ - ? NLW(PM_STR) : NLW(AM_STR))) - -# define aw_len STRLEN (a_wkday) -# define am_len STRLEN (a_month) -# define ap_len STRLEN (ampm) -#else -# if !HAVE_STRFTIME -# define f_wkday (weekday_name[tp->tm_wday]) -# define f_month (month_name[tp->tm_mon]) -# define a_wkday f_wkday -# define a_month f_month -# define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11)) - - size_t aw_len = 3; - size_t am_len = 3; - size_t ap_len = 2; -# endif -#endif - const char *zone; - size_t i = 0; - CHAR_T *p = s; - const CHAR_T *f; -#if DO_MULTIBYTE && !defined COMPILE_WIDE - const char *format_end = NULL; -#endif - - zone = NULL; -#if HAVE_TM_ZONE - /* The POSIX test suite assumes that setting - the environment variable TZ to a new value before calling strftime() - will influence the result (the %Z format) even if the information in - TP is computed with a totally different time zone. - This is bogus: though POSIX allows bad behavior like this, - POSIX does not require it. Do the right thing instead. */ - zone = (const char *) tp->tm_zone; -#endif -#if HAVE_TZNAME - if (ut) - { - if (! (zone && *zone)) - zone = "GMT"; - } - else - { - /* POSIX.1 requires that local time zone information is used as - though strftime called tzset. */ -# if HAVE_TZSET - tzset (); -# endif - } -#endif - - if (hour12 > 12) - hour12 -= 12; - else - if (hour12 == 0) - hour12 = 12; - - for (f = format; *f != '\0'; ++f) - { - int pad = 0; /* Padding for number ('-', '_', or 0). */ - int modifier; /* Field modifier ('E', 'O', or 0). */ - int digits; /* Max digits for numeric format. */ - int number_value; /* Numeric value to be printed. */ - int negative_number; /* 1 if the number is negative. */ - const CHAR_T *subfmt; - CHAR_T *bufp; - CHAR_T buf[1 + (sizeof (int) < sizeof (time_t) - ? INT_STRLEN_BOUND (time_t) - : INT_STRLEN_BOUND (int))]; - int width = -1; - int to_lowcase = 0; - int to_uppcase = 0; - int change_case = 0; - int format_char; - -#if DO_MULTIBYTE && !defined COMPILE_WIDE - switch (*f) - { - case L_('%'): - break; - - case L_('\b'): case L_('\t'): case L_('\n'): - case L_('\v'): case L_('\f'): case L_('\r'): - case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): - case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): - case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): - case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): - case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): - case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): - case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): - case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): - case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): - case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): - case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): - case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): - case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): - case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): - case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): - case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): - case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): - case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): - case L_('~'): - /* The C Standard requires these 98 characters (plus '%') to - be in the basic execution character set. None of these - characters can start a multibyte sequence, so they need - not be analyzed further. */ - add (1, *p = *f); - continue; - - default: - /* Copy this multibyte sequence until we reach its end, find - an error, or come back to the initial shift state. */ - { - mbstate_t mbstate = mbstate_zero; - size_t len = 0; - size_t fsize; - - if (! format_end) - format_end = f + strlen (f) + 1; - fsize = format_end - f; - - do - { - size_t bytes = mbrlen (f + len, fsize - len, &mbstate); - - if (bytes == 0) - break; - - if (bytes == (size_t) -2) - { - len += strlen (f + len); - break; - } - - if (bytes == (size_t) -1) - { - len++; - break; - } - - len += bytes; - } - while (! mbsinit (&mbstate)); - - cpy (len, f); - f += len - 1; - continue; - } - } - -#else /* ! DO_MULTIBYTE */ - - /* Either multibyte encodings are not supported, they are - safe for formats, so any non-'%' byte can be copied through, - or this is the wide character version. */ - if (*f != L_('%')) - { - add (1, *p = *f); - continue; - } - -#endif /* ! DO_MULTIBYTE */ - - /* Check for flags that can modify a format. */ - while (1) - { - switch (*++f) - { - /* This influences the number formats. */ - case L_('_'): - case L_('-'): - case L_('0'): - pad = *f; - continue; - - /* This changes textual output. */ - case L_('^'): - to_uppcase = 1; - continue; - case L_('#'): - change_case = 1; - continue; - - default: - break; - } - break; - } - - /* As a GNU extension we allow to specify the field width. */ - if (ISDIGIT (*f)) - { - width = 0; - do - { - if (width > INT_MAX / 10 - || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) - /* Avoid overflow. */ - width = INT_MAX; - else - { - width *= 10; - width += *f - L_('0'); - } - ++f; - } - while (ISDIGIT (*f)); - } - - /* Check for modifiers. */ - switch (*f) - { - case L_('E'): - case L_('O'): - modifier = *f++; - break; - - default: - modifier = 0; - break; - } - - /* Now do the specified format. */ - format_char = *f; - switch (format_char) - { -#define DO_NUMBER(d, v) \ - digits = d > width ? d : width; \ - number_value = v; goto do_number -#define DO_NUMBER_SPACEPAD(d, v) \ - digits = d > width ? d : width; \ - number_value = v; goto do_number_spacepad - - case L_('%'): - if (modifier != 0) - goto bad_format; - add (1, *p = *f); - break; - - case L_('a'): - if (modifier != 0) - goto bad_format; - if (change_case) - { - to_uppcase = 1; - to_lowcase = 0; - } -#if defined _NL_CURRENT || !HAVE_STRFTIME - cpy (aw_len, a_wkday); - break; -#else - goto underlying_strftime; -#endif - - case 'A': - if (modifier != 0) - goto bad_format; - if (change_case) - { - to_uppcase = 1; - to_lowcase = 0; - } -#if defined _NL_CURRENT || !HAVE_STRFTIME - cpy (STRLEN (f_wkday), f_wkday); - break; -#else - goto underlying_strftime; -#endif - - case L_('b'): - case L_('h'): - if (change_case) - { - to_uppcase = 1; - to_lowcase = 0; - } - if (modifier != 0) - goto bad_format; -#if defined _NL_CURRENT || !HAVE_STRFTIME - cpy (am_len, a_month); - break; -#else - goto underlying_strftime; -#endif - - case L_('B'): - if (modifier != 0) - goto bad_format; - if (change_case) - { - to_uppcase = 1; - to_lowcase = 0; - } -#if defined _NL_CURRENT || !HAVE_STRFTIME - cpy (STRLEN (f_month), f_month); - break; -#else - goto underlying_strftime; -#endif - - case L_('c'): - if (modifier == L_('O')) - goto bad_format; -#ifdef _NL_CURRENT - if (! (modifier == 'E' - && (*(subfmt = - (const CHAR_T *) _NL_CURRENT (LC_TIME, - NLW(ERA_D_T_FMT))) - != '\0'))) - subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# else - subfmt = L_("%a %b %e %H:%M:%S %Y"); -# endif -#endif - - subformat: - { - CHAR_T *old_start = p; - size_t len = my_strftime (NULL, (size_t) -1, subfmt, - tp ut_argument LOCALE_ARG); - add (len, my_strftime (p, maxsize - i, subfmt, - tp ut_argument LOCALE_ARG)); - - if (to_uppcase) - while (old_start < p) - { - *old_start = TOUPPER ((UCHAR_T) *old_start, loc); - ++old_start; - } - } - break; - -#if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) - underlying_strftime: - { - /* The relevant information is available only via the - underlying strftime implementation, so use that. */ - char ufmt[4]; - char *u = ufmt; - char ubuf[1024]; /* enough for any single format in practice */ - size_t len; - /* Make sure we're calling the actual underlying strftime. - In some cases, config.h contains something like - "#define strftime rpl_strftime". */ -# ifdef strftime -# undef strftime - size_t strftime (); -# endif - - *u++ = '%'; - if (modifier != 0) - *u++ = modifier; - *u++ = format_char; - *u = '\0'; - len = strftime (ubuf, sizeof ubuf, ufmt, tp); - if (len == 0 && ubuf[0] != '\0') - return 0; - cpy (len, ubuf); - } - break; -#endif - - case L_('C'): - if (modifier == L_('O')) - goto bad_format; - if (modifier == L_('E')) - { -#if HAVE_STRUCT_ERA_ENTRY - struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); - if (era) - { -# ifdef COMPILE_WIDE - size_t len = __wcslen (era->era_wname); - cpy (len, era->era_wname); -# else - size_t len = strlen (era->era_name); - cpy (len, era->era_name); -# endif - break; - } -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# endif -#endif - } - - { - int year = tp->tm_year + TM_YEAR_BASE; - DO_NUMBER (1, year / 100 - (year % 100 < 0)); - } - - case L_('x'): - if (modifier == L_('O')) - goto bad_format; -#ifdef _NL_CURRENT - if (! (modifier == L_('E') - && (*(subfmt = - (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) - != L_('\0')))) - subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); - goto subformat; -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# else - /* Fall through. */ -# endif -#endif - case L_('D'): - if (modifier != 0) - goto bad_format; - subfmt = L_("%m/%d/%y"); - goto subformat; - - case L_('d'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, tp->tm_mday); - - case L_('e'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER_SPACEPAD (2, tp->tm_mday); - - /* All numeric formats set DIGITS and NUMBER_VALUE and then - jump to one of these two labels. */ - - do_number_spacepad: - /* Force `_' flag unless overwritten by `0' or '-' flag. */ - if (pad != L_('0') && pad != L_('-')) - pad = L_('_'); - - do_number: - /* Format the number according to the MODIFIER flag. */ - - if (modifier == L_('O') && 0 <= number_value) - { -#ifdef _NL_CURRENT - /* Get the locale specific alternate representation of - the number NUMBER_VALUE. If none exist NULL is returned. */ - const CHAR_T *cp = nl_get_alt_digit (number_value - HELPER_LOCALE_ARG); - - if (cp != NULL) - { - size_t digitlen = STRLEN (cp); - if (digitlen != 0) - { - cpy (digitlen, cp); - break; - } - } -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# endif -#endif - } - { - unsigned int u = number_value; - - bufp = buf + sizeof (buf) / sizeof (buf[0]); - negative_number = number_value < 0; - - if (negative_number) - u = -u; - - do - *--bufp = u % 10 + L_('0'); - while ((u /= 10) != 0); - } - - do_number_sign_and_padding: - if (negative_number) - *--bufp = L_('-'); - - if (pad != L_('-')) - { - int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) - - bufp); - - if (padding > 0) - { - if (pad == L_('_')) - { - if ((size_t) padding >= maxsize - i) - return 0; - - if (p) - memset_space (p, padding); - i += padding; - width = width > padding ? width - padding : 0; - } - else - { - if ((size_t) digits >= maxsize - i) - return 0; - - if (negative_number) - { - ++bufp; - - if (p) - *p++ = L_('-'); - ++i; - } - - if (p) - memset_zero (p, padding); - i += padding; - width = 0; - } - } - } - - cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); - break; - - case L_('F'): - if (modifier != 0) - goto bad_format; - subfmt = L_("%Y-%m-%d"); - goto subformat; - - case L_('H'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, tp->tm_hour); - - case L_('I'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, hour12); - - case L_('k'): /* GNU extension. */ - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER_SPACEPAD (2, tp->tm_hour); - - case L_('l'): /* GNU extension. */ - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER_SPACEPAD (2, hour12); - - case L_('j'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (3, 1 + tp->tm_yday); - - case L_('M'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, tp->tm_min); - - case L_('m'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, tp->tm_mon + 1); - - case L_('n'): - add (1, *p = L_('\n')); - break; - - case L_('P'): - to_lowcase = 1; -#if !defined _NL_CURRENT && HAVE_STRFTIME - format_char = L_('p'); -#endif - /* FALLTHROUGH */ - - case L_('p'): - if (change_case) - { - to_uppcase = 0; - to_lowcase = 1; - } -#if defined _NL_CURRENT || !HAVE_STRFTIME - cpy (ap_len, ampm); - break; -#else - goto underlying_strftime; -#endif - - case L_('R'): - subfmt = L_("%H:%M"); - goto subformat; - - case L_('r'): -#if !defined _NL_CURRENT && HAVE_STRFTIME - goto underlying_strftime; -#else -# ifdef _NL_CURRENT - if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, - NLW(T_FMT_AMPM))) - == L_('\0')) -# endif - subfmt = L_("%I:%M:%S %p"); - goto subformat; -#endif - - case L_('S'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, tp->tm_sec); - - case L_('s'): /* GNU extension. */ - { - struct tm ltm; - time_t t; - - ltm = *tp; - t = mktime (<m); - - /* Generate string value for T using time_t arithmetic; - this works even if sizeof (long) < sizeof (time_t). */ - - bufp = buf + sizeof (buf) / sizeof (buf[0]); - negative_number = t < 0; - - do - { - int d = t % 10; - t /= 10; - - if (negative_number) - { - d = -d; - - /* Adjust if division truncates to minus infinity. */ - if (0 < -1 % 10 && d < 0) - { - t++; - d += 10; - } - } - - *--bufp = d + L_('0'); - } - while (t != 0); - - digits = 1; - goto do_number_sign_and_padding; - } - - case L_('X'): - if (modifier == L_('O')) - goto bad_format; -#ifdef _NL_CURRENT - if (! (modifier == L_('E') - && (*(subfmt = - (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) - != L_('\0')))) - subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); - goto subformat; -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# else - /* Fall through. */ -# endif -#endif - case L_('T'): - subfmt = L_("%H:%M:%S"); - goto subformat; - - case L_('t'): - add (1, *p = L_('\t')); - break; - - case L_('u'): - DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); - - case L_('U'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); - - case L_('V'): - case L_('g'): - case L_('G'): - if (modifier == L_('E')) - goto bad_format; - { - int year = tp->tm_year + TM_YEAR_BASE; - int days = iso_week_days (tp->tm_yday, tp->tm_wday); - - if (days < 0) - { - /* This ISO week belongs to the previous year. */ - year--; - days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), - tp->tm_wday); - } - else - { - int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), - tp->tm_wday); - if (0 <= d) - { - /* This ISO week belongs to the next year. */ - year++; - days = d; - } - } - - switch (*f) - { - case L_('g'): - DO_NUMBER (2, (year % 100 + 100) % 100); - - case L_('G'): - DO_NUMBER (1, year); - - default: - DO_NUMBER (2, days / 7 + 1); - } - } - - case L_('W'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); - - case L_('w'): - if (modifier == L_('E')) - goto bad_format; - - DO_NUMBER (1, tp->tm_wday); - - case L_('Y'): - if (modifier == 'E') - { -#if HAVE_STRUCT_ERA_ENTRY - struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); - if (era) - { -# ifdef COMPILE_WIDE - subfmt = era->era_wformat; -# else - subfmt = era->era_format; -# endif - goto subformat; - } -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# endif -#endif - } - if (modifier == L_('O')) - goto bad_format; - else - DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); - - case L_('y'): - if (modifier == L_('E')) - { -#if HAVE_STRUCT_ERA_ENTRY - struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); - if (era) - { - int delta = tp->tm_year - era->start_date[0]; - DO_NUMBER (1, (era->offset - + delta * era->absolute_direction)); - } -#else -# if HAVE_STRFTIME - goto underlying_strftime; -# endif -#endif - } - DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); - - case L_('Z'): - if (change_case) - { - to_uppcase = 0; - to_lowcase = 1; - } - -#if HAVE_TZNAME - /* The tzset() call might have changed the value. */ - if (!(zone && *zone) && tp->tm_isdst >= 0) - zone = tzname[tp->tm_isdst]; -#endif - if (! zone) - zone = ""; - -#ifdef COMPILE_WIDE - { - /* The zone string is always given in multibyte form. We have - to transform it first. */ - wchar_t *wczone; - size_t len; - widen (zone, wczone, len); - cpy (len, wczone); - } -#else - cpy (strlen (zone), zone); -#endif - break; - - case L_('z'): - if (tp->tm_isdst < 0) - break; - - { - int diff; -#if HAVE_TM_GMTOFF - diff = tp->tm_gmtoff; -#else - if (ut) - diff = 0; - else - { - struct tm gtm; - struct tm ltm; - time_t lt; - - ltm = *tp; - lt = mktime (<m); - - if (lt == (time_t) -1) - { - /* mktime returns -1 for errors, but -1 is also a - valid time_t value. Check whether an error really - occurred. */ - struct tm tm; - - if (! __localtime_r (<, &tm) - || ((ltm.tm_sec ^ tm.tm_sec) - | (ltm.tm_min ^ tm.tm_min) - | (ltm.tm_hour ^ tm.tm_hour) - | (ltm.tm_mday ^ tm.tm_mday) - | (ltm.tm_mon ^ tm.tm_mon) - | (ltm.tm_year ^ tm.tm_year))) - break; - } - - if (! __gmtime_r (<, >m)) - break; - - diff = tm_diff (<m, >m); - } -#endif - - if (diff < 0) - { - add (1, *p = L_('-')); - diff = -diff; - } - else - add (1, *p = L_('+')); - - diff /= 60; - DO_NUMBER (4, (diff / 60) * 100 + diff % 60); - } - - case L_('\0'): /* GNU extension: % at end of format. */ - --f; - /* Fall through. */ - default: - /* Unknown format; output the format, including the '%', - since this is most likely the right thing to do if a - multibyte string has been misparsed. */ - bad_format: - { - int flen; - for (flen = 1; f[1 - flen] != L_('%'); flen++) - continue; - cpy (flen, &f[1 - flen]); - } - break; - } - } - - if (p && maxsize != 0) - *p = L_('\0'); - return i; -} -#ifdef _LIBC -libc_hidden_def (my_strftime) -#endif - - -#ifdef emacs -/* For Emacs we have a separate interface which corresponds to the normal - strftime function and does not have the extra information whether the - TP arguments comes from a `gmtime' call or not. */ size_t -emacs_strftime (s, maxsize, format, tp) - char *s; - size_t maxsize; - const char *format; - const struct tm *tp; +strftime (char *s, size_t maxsize, const char *format, const struct tm *tp) { - return my_strftime (s, maxsize, format, tp, 0); + return __strftime_l (s, maxsize, format, tp, _NL_CURRENT_LOCALE); } -#endif +libc_hidden_def (strftime) |