X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fstrftime.c;h=91d5d85cbcf2a846e99d8af0c93c0353a873f07d;hb=4779b635ef35c7b0bc4044fcb5bc746d06f158c4;hp=716f6530a669fe7c77e630f3fe307e21c44468b6;hpb=2b7805a3cc75aa6312febce626410d0ea3e0e3c6;p=gnulib.git diff --git a/lib/strftime.c b/lib/strftime.c index 716f6530a..91d5d85cb 100644 --- a/lib/strftime.c +++ b/lib/strftime.c @@ -1,12 +1,12 @@ -/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. +/* Copyright (C) 1991-2001, 2003-2007, 2009-2013 Free Software Foundation, Inc. - NOTE: The canonical source of this file is maintained with the GNU C - Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu. + NOTE: The canonical source of this file is maintained with the GNU C Library. + Bugs can be reported to bug-glibc@prep.ai.mit.edu. - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; either version 2, or (at your option) any - later version. + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -14,191 +14,349 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#ifdef HAVE_CONFIG_H -# include -#endif + along with this program. If not, see . */ #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 MULTIBYTE_IS_FORMAT_SAFE 1 -# define STDC_HEADERS 1 -# include +# define HAVE_TZNAME 1 +# define HAVE_TZSET 1 # include "../locale/localeinfo.h" -#endif - -#include /* Some systems define `time_t' here. */ - -#ifdef TIME_WITH_SYS_TIME -# include -# include #else -# ifdef HAVE_SYS_TIME_H -# include +# include +# if FPRINTFTIME +# include "fprintftime.h" # else -# include +# include "strftime.h" # endif #endif -/* Do multibyte processing if multibytes are supported, unless +#include +#include + +#if HAVE_TZNAME && !HAVE_DECL_TZNAME +extern char *tzname[]; +#endif + +/* Do multibyte processing if multibyte encodings 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) + conversion specifications. The multibyte encodings used by the + C library on the various platforms (UTF-8, GB2312, GBK, CP936, + GB18030, EUC-TW, BIG5, BIG5-HKSCS, CP950, EUC-JP, EUC-KR, CP949, + SHIFT_JIS, CP932, JOHAB) are safe for formats, because the byte '%' + cannot occur in a multibyte character except in the first byte. + + The DEC-HANYU encoding used on OSF/1 is not safe for formats, but + this encoding has never been seen in real-life use, so we ignore + it. */ +#if !(defined __osf__ && 0) +# define MULTIBYTE_IS_FORMAT_SAFE 1 +#endif +#define DO_MULTIBYTE (! MULTIBYTE_IS_FORMAT_SAFE) #if DO_MULTIBYTE -# if HAVE_MBRLEN -# include -# 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 +# include static const mbstate_t mbstate_zero; #endif -#if HAVE_LIMITS_H -# include -#endif +#include +#include +#include +#include +#include -#if STDC_HEADERS -# include -# include -# include -#else -# define memcpy(d, s, n) bcopy (s, d, n) -#endif +#ifdef COMPILE_WIDE +# include +# define CHAR_T wchar_t +# define UCHAR_T unsigned int +# define L_(Str) L##Str +# define NLW(Sym) _NL_W##Sym -#ifndef __P -#if defined (__GNUC__) || (defined (__STDC__) && __STDC__) -#define __P(args) args -#else -#define __P(args) () -#endif /* GCC. */ -#endif /* Not __P. */ +# define MEMCPY(d, s, n) __wmemcpy (d, s, n) +# define STRLEN(s) __wcslen (s) -#ifndef PTR -#ifdef __STDC__ -#define PTR void * #else -#define PTR char * -#endif -#endif +# define CHAR_T char +# define UCHAR_T unsigned char +# define L_(Str) Str +# define NLW(Sym) Sym -#ifndef CHAR_BIT -#define CHAR_BIT 8 -#endif +# define MEMCPY(d, s, n) memcpy (d, s, n) +# define STRLEN(s) strlen (s) -#define TYPE_SIGNED(t) ((t) -1 < 0) +#endif -/* 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. */ +/* Shift A right by B bits portably, by dividing A by 2**B and + truncating towards minus infinity. A and B should be free of side + effects, and B should be in the range 0 <= B <= INT_BITS - 2, where + INT_BITS is the number of useful bits in an int. GNU code can + assume that INT_BITS is at least 32. + + ISO C99 says that A >> B is implementation-defined if A < 0. Some + implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift + right in the usual way when A < 0, so SHR falls back on division if + ordinary A >> B doesn't seem to be the usual signed shift. */ +#define SHR(a, b) \ + (-1 >> 1 == -1 \ + ? (a) >> (b) \ + : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) + +/* Bound on length of the string representing an integer type or expression T. + Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485; + add 1 for integer division truncation; add 1 more for a minus sign + if needed. */ #define INT_STRLEN_BOUND(t) \ - ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 100 + 1 + TYPE_SIGNED (t)) + ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2) #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) \ +# define __isleap(year) \ ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) #endif #ifdef _LIBC -# define gmtime_r __gmtime_r -# define localtime_r __localtime_r +# define tzname __tzname +# define tzset __tzset +#endif + +#if !HAVE_TM_GMTOFF +/* Portable standalone applications should supply a "time.h" that + declares a POSIX-compliant localtime_r, for the benefit of older + implementations that lack localtime_r or have a nonstandard one. + See the gnulib time_r module for one way to implement this. */ +# undef __gmtime_r +# undef __localtime_r +# define __gmtime_r gmtime_r +# define __localtime_r localtime_r +#endif + + +#ifndef FPRINTFTIME +# define FPRINTFTIME 0 +#endif + +#if FPRINTFTIME +# define STREAM_OR_CHAR_T FILE +# define STRFTIME_ARG(x) /* empty */ +#else +# define STREAM_OR_CHAR_T CHAR_T +# define STRFTIME_ARG(x) x, +#endif + +#if FPRINTFTIME +# define memset_byte(P, Len, Byte) \ + do { size_t _i; for (_i = 0; _i < Len; _i++) fputc (Byte, P); } while (0) +# define memset_space(P, Len) memset_byte (P, Len, ' ') +# define memset_zero(P, Len) memset_byte (P, Len, '0') +#elif defined 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 + +#if FPRINTFTIME +# define advance(P, N) +#else +# define advance(P, N) ((P) += (N)) +#endif + +#define add(n, f) \ + do \ + { \ + size_t _n = (n); \ + size_t _w = (width < 0 ? 0 : width); \ + size_t _incr = _n < _w ? _w : _n; \ + if (_incr >= maxsize - i) \ + return 0; \ + if (p) \ + { \ + if (digits == 0 && _n < _w) \ + { \ + size_t _delta = width - _n; \ + if (pad == L_('0')) \ + memset_zero (p, _delta); \ + else \ + memset_space (p, _delta); \ + } \ + f; \ + advance (p, _n); \ + } \ + i += _incr; \ + } while (0) + +#if FPRINTFTIME +# define add1(C) add (1, fputc (C, p)) +#else +# define add1(C) add (1, *p = C) +#endif + +#if FPRINTFTIME +# define cpy(n, s) \ + add ((n), \ + do \ + { \ + if (to_lowcase) \ + fwrite_lowcase (p, (s), _n); \ + else if (to_uppcase) \ + fwrite_uppcase (p, (s), _n); \ + else \ + { \ + /* Ignore the value of fwrite. The caller can determine whether \ + an error occurred by inspecting ferror (P). All known fwrite \ + implementations set the stream's error indicator when they \ + fail due to ENOMEM etc., even though C11 and POSIX.1-2008 do \ + not require this. */ \ + fwrite (s, _n, 1, p); \ + } \ + } \ + while (0) \ + ) +#else +# 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 ((void *) p, (void const *) (s), _n)) +#endif + +#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 = (wchar_t *) 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_ARG , loc +# define LOCALE_PARAM_PROTO , __locale_t loc +# define HELPER_LOCALE_ARG , current #else -# if ! HAVE_LOCALTIME_R -# if ! HAVE_TM_GMTOFF -/* Approximate gmtime_r as best we can in its absence. */ -#define gmtime_r my_gmtime_r -static struct tm *gmtime_r __P ((const time_t *, struct tm *)); -static struct tm * -gmtime_r (t, tp) - const time_t *t; - struct tm *tp; +# define LOCALE_PARAM_PROTO +# define LOCALE_ARG +# 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 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 +#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) + +#if FPRINTFTIME +static void +fwrite_lowcase (FILE *fp, const CHAR_T *src, size_t len) { - struct tm *l = gmtime (t); - if (! l) - return 0; - *tp = *l; - return tp; + while (len-- > 0) + { + fputc (TOLOWER ((UCHAR_T) *src, loc), fp); + ++src; + } } -# endif /* ! HAVE_TM_GMTOFF */ - -/* Approximate localtime_r as best we can in its absence. */ -#define localtime_r my_localtime_r -static struct tm *localtime_r __P ((const time_t *, struct tm *)); -static struct tm * -localtime_r (t, tp) - const time_t *t; - struct tm *tp; + +static void +fwrite_uppcase (FILE *fp, const CHAR_T *src, size_t len) { - struct tm *l = localtime (t); - if (! l) - return 0; - *tp = *l; - return tp; + while (len-- > 0) + { + fputc (TOUPPER ((UCHAR_T) *src, loc), fp); + ++src; + } +} +#else +static CHAR_T * +memcpy_lowcase (CHAR_T *dest, const CHAR_T *src, + size_t len LOCALE_PARAM_PROTO) +{ + while (len-- > 0) + dest[len] = TOLOWER ((UCHAR_T) src[len], loc); + return dest; } -# endif /* ! HAVE_LOCALTIME_R */ -#endif /* ! defined (_LIBC) */ - - -#define add(n, f) \ - do \ - { \ - i += (n); \ - if (i >= maxsize) \ - return 0; \ - else \ - if (p) \ - { \ - f; \ - p += (n); \ - } \ - } while (0) -#define cpy(n, s) add ((n), memcpy((PTR) p, (PTR) (s), (n))) + +static CHAR_T * +memcpy_uppcase (CHAR_T *dest, const CHAR_T *src, + size_t len LOCALE_PARAM_PROTO) +{ + while (len-- > 0) + dest[len] = TOUPPER ((UCHAR_T) src[len], loc); + return dest; +} +#endif + #if ! HAVE_TM_GMTOFF /* Yield the difference between *A and *B, measured in seconds, ignoring leap seconds. */ -static int tm_diff __P ((const struct tm *, const struct tm *)); +# define tm_diff ftime_tm_diff static int -tm_diff (a, b) - const struct tm *a; - const struct tm *b; +tm_diff (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 a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); + int b4 = SHR (b->tm_year, 2) + SHR (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 a400 = SHR (a100, 2); + int b400 = SHR (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)); + + (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)); + + (a->tm_min - b->tm_min)) + + (a->tm_sec - b->tm_sec)); } #endif /* ! HAVE_TM_GMTOFF */ @@ -211,677 +369,1099 @@ tm_diff (a, b) #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 +__inline__ #endif static int -iso_week_days (yday, wday) - int yday; - int wday; +iso_week_days (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); + - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 + + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); } -#ifndef _NL_CURRENT -static char const weekday_name[][10] = - { - "Sunday", "Monday", "Tuesday", "Wednesday", - "Thursday", "Friday", "Saturday" - }; -static char const month_name[][10] = - { - "January", "February", "March", "April", "May", "June", - "July", "August", "September", "October", "November", "December" - }; +/* When compiling this file, GNU applications can #define my_strftime + to a symbol (typically nstrftime) to get an extended strftime with + extra arguments UT and NS. Emacs is a special case for now, but + this Emacs-specific code can be removed once Emacs's config.h + defines my_strftime. */ +#if defined emacs && !defined my_strftime +# define my_strftime nstrftime #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 -strftime (s, maxsize, format, tp) - char *s; - size_t maxsize; - const char *format; - register const struct tm *tp; +#if FPRINTFTIME +# undef my_strftime +# define my_strftime fprintftime +#endif + +#ifdef my_strftime +# define extra_args , ut, ns +# define extra_args_spec , int ut, int ns +#else +# if defined 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 extra_args +# define extra_args_spec +/* We don't have this information in general. */ +# define ut 0 +# define ns 0 +#endif + + +/* Just like my_strftime, below, but with one more parameter, UPCASE, + to indicate that the result should be converted to upper case. */ +static size_t +strftime_case_ (bool upcase, STREAM_OR_CHAR_T *s, + STRFTIME_ARG (size_t maxsize) + const CHAR_T *format, + const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) { +#if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL + struct locale_data *const current = loc->__locales[LC_TIME]; +#endif +#if FPRINTFTIME + size_t maxsize = (size_t) -1; +#endif + int hour12 = tp->tm_hour; #ifdef _NL_CURRENT - const char *const a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday); - const char *const f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday); - const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon); - const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon); - const char *const ampm = _NL_CURRENT (LC_TIME, - hour12 > 11 ? PM_STR : AM_STR); - size_t aw_len = strlen (a_wkday); - size_t am_len = strlen (a_month); - size_t ap_len = strlen (ampm); -#else - const char *const f_wkday = weekday_name[tp->tm_wday]; - const char *const f_month = month_name[tp->tm_mon]; - const char *const a_wkday = f_wkday; - const char *const a_month = f_month; - const char *const ampm = "AMPM" + 2 * (hour12 > 11); - size_t aw_len = 3; - size_t am_len = 3; - size_t ap_len = 2; -#endif - size_t wkday_len = strlen (f_wkday); - size_t month_len = strlen (f_month); + /* 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) +#endif const char *zone; - size_t zonelen; - register size_t i = 0; - register char *p = s; - register const char *f; + size_t i = 0; + STREAM_OR_CHAR_T *p = s; + const CHAR_T *f; +#if DO_MULTIBYTE && !defined COMPILE_WIDE + const char *format_end = NULL; +#endif + +#if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST + /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned + by localtime. On such systems, we must either use the tzset and + localtime wrappers to work around the bug (which sets + HAVE_RUN_TZSET_TEST) or make a copy of the structure. */ + struct tm copy = *tp; + tp = © +#endif - zone = 0; + 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 (!(zone && *zone) && tp->tm_isdst >= 0) - zone = tzname[tp->tm_isdst]; + if (ut) + { + if (! (zone && *zone)) + zone = "GMT"; + } + else + { + /* POSIX.1 requires that local time zone information be used as + though strftime called tzset. */ +# if HAVE_TZSET + tzset (); +# endif + } #endif - if (! zone) - zone = ""; /* POSIX.2 requires the empty string here. */ - - zonelen = strlen (zone); if (hour12 > 12) hour12 -= 12; else - if (hour12 == 0) hour12 = 12; + if (hour12 == 0) + hour12 = 12; for (f = format; *f != '\0'; ++f) { - int pad; /* 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 *subfmt; - char *bufp; - char buf[1 + (sizeof (int) < sizeof (time_t) - ? INT_STRLEN_BOUND (time_t) - : INT_STRLEN_BOUND (int))]; - -#if DO_MULTIBYTE - - switch (*f) - { - case '%': - break; - - case '\a': case '\b': case '\t': case '\n': - case '\v': case '\f': case '\r': - case ' ': case '!': case '"': case '#': case '&': case'\'': - case '(': case ')': case '*': case '+': case ',': case '-': - case '.': case '/': case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': case '8': case '9': - case ':': case ';': case '<': case '=': case '>': case '?': - case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': - case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': - case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': - case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': - case 'Y': case 'Z': case '[': case'\\': case ']': case '^': - case '_': case 'a': case 'b': case 'c': case 'd': case 'e': - case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': - case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': - case 'r': case 's': case 't': case 'u': case 'v': case 'w': - case 'x': case 'y': case 'z': case '{': case '|': case '}': - case '~': - /* 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; - - do - { - size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); - - if (bytes == 0) - break; - - if (bytes == (size_t) -2 || bytes == (size_t) -1) - { - len++; - break; - } - - len += bytes; - } - while (! mbsinit (&mbstate)); - - cpy (len, f); - continue; - } - } + int pad = 0; /* Padding for number ('-', '_', or 0). */ + int modifier; /* Field modifier ('E', 'O', or 0). */ + int digits = 0; /* Max digits for numeric format. */ + int number_value; /* Numeric value to be printed. */ + unsigned int u_number_value; /* (unsigned int) number_value. */ + bool negative_number; /* The number is negative. */ + bool always_output_a_sign; /* +/- should always be output. */ + int tz_colon_mask; /* Bitmask of where ':' should appear. */ + const CHAR_T *subfmt; + CHAR_T sign_char; + CHAR_T *bufp; + CHAR_T buf[1 + + 2 /* for the two colons in a %::z or %:::z time zone */ + + (sizeof (int) < sizeof (time_t) + ? INT_STRLEN_BOUND (time_t) + : INT_STRLEN_BOUND (int))]; + int width = -1; + bool to_lowcase = false; + bool to_uppcase = upcase; + size_t colons; + bool change_case = false; + 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. */ + add1 (*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, or they are - safe for formats, so any non-'%' byte can be copied through. */ - if (*f != '%') - { - add (1, *p = *f); - continue; - } + /* 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_('%')) + { + add1 (*f); + continue; + } #endif /* ! DO_MULTIBYTE */ - /* Check for flags that can modify a number format. */ - ++f; - switch (*f) - { - case '_': - case '-': - pad = *f++; - break; - - default: - pad = 0; - break; - } + /* 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 = true; + continue; + case L_('#'): + change_case = true; + 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 'E': - case 'O': - modifier = *f++; - break; + { + case L_('E'): + case L_('O'): + modifier = *f++; + break; - default: - modifier = 0; - break; - } + default: + modifier = 0; + break; + } /* Now do the specified format. */ - switch (*f) - { + format_char = *f; + switch (format_char) + { #define DO_NUMBER(d, v) \ - digits = d; number_value = v; goto do_number + digits = d; \ + number_value = v; goto do_number +#define DO_SIGNED_NUMBER(d, negative, v) \ + digits = d; \ + negative_number = negative; \ + u_number_value = v; goto do_signed_number + + /* The mask is not what you might think. + When the ordinal i'th bit is set, insert a colon + before the i'th digit of the time zone representation. */ +#define DO_TZ_OFFSET(d, negative, mask, v) \ + digits = d; \ + negative_number = negative; \ + tz_colon_mask = mask; \ + u_number_value = v; goto do_tz_offset #define DO_NUMBER_SPACEPAD(d, v) \ - digits = d; number_value = v; goto do_number_spacepad - - case '%': - if (modifier != 0) - goto bad_format; - add (1, *p = *f); - break; - - case 'a': - if (modifier != 0) - goto bad_format; - cpy (aw_len, a_wkday); - break; - - case 'A': - if (modifier != 0) - goto bad_format; - cpy (wkday_len, f_wkday); - break; - - case 'b': - case 'h': /* POSIX.2 extension. */ - if (modifier != 0) - goto bad_format; - cpy (am_len, a_month); - break; - - case 'B': - if (modifier != 0) - goto bad_format; - cpy (month_len, f_month); - break; - - case 'c': - if (modifier == 'O') - goto bad_format; + digits = d; \ + number_value = v; goto do_number_spacepad + + case L_('%'): + if (modifier != 0) + goto bad_format; + add1 (*f); + break; + + case L_('a'): + if (modifier != 0) + goto bad_format; + if (change_case) + { + to_uppcase = true; + to_lowcase = false; + } #ifdef _NL_CURRENT - if (! (modifier == 'E' - && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0')) - subfmt = _NL_CURRENT (LC_TIME, D_T_FMT); + cpy (aw_len, a_wkday); + break; #else - subfmt = "%a %b %e %H:%M:%S %Y"; + goto underlying_strftime; #endif - subformat: - { - size_t len = strftime (p, maxsize - i, subfmt, tp); - if (len == 0 && *subfmt) - return 0; - add (len, ;); - } - break; - - case 'C': /* POSIX.2 extension. */ - if (modifier == 'O') - goto bad_format; -#if HAVE_STRUCT_ERA_ENTRY - if (modifier == 'E') - { - struct era_entry *era = _nl_get_era_entry (tp); - if (era) - { - size_t len = strlen (era->name_fmt); - cpy (len, era->name_fmt); - break; - } - } -#endif - { - int year = tp->tm_year + TM_YEAR_BASE; - DO_NUMBER (1, year / 100 - (year % 100 < 0)); - } - - case 'x': - if (modifier == 'O') - goto bad_format; + case 'A': + if (modifier != 0) + goto bad_format; + if (change_case) + { + to_uppcase = true; + to_lowcase = false; + } #ifdef _NL_CURRENT - if (! (modifier == 'E' - && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0')) - subfmt = _NL_CURRENT (LC_TIME, D_FMT); - goto subformat; + cpy (STRLEN (f_wkday), f_wkday); + break; +#else + goto underlying_strftime; #endif - /* Fall through. */ - case 'D': /* POSIX.2 extension. */ - if (modifier != 0) - goto bad_format; - subfmt = "%m/%d/%y"; - goto subformat; - - case 'd': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (2, tp->tm_mday); - - case 'e': /* POSIX.2 extension. */ - if (modifier == '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. */ - pad = '_'; - - do_number: - /* Format the number according to the MODIFIER flag. */ + case L_('b'): + case L_('h'): + if (change_case) + { + to_uppcase = true; + to_lowcase = false; + } + if (modifier != 0) + goto bad_format; #ifdef _NL_CURRENT - if (modifier == 'O' && 0 <= number_value) - { - /* Get the locale specific alternate representation of - the number NUMBER_VALUE. If none exist NULL is returned. */ - const char *cp = _nl_get_alt_digit (number_value); - - if (cp != NULL) - { - size_t digitlen = strlen (cp); - if (digitlen != 0) - { - cpy (digitlen, cp); - break; - } - } - } + cpy (am_len, a_month); + break; +#else + goto underlying_strftime; #endif - { - unsigned int u = number_value; - - bufp = buf + sizeof (buf); - negative_number = number_value < 0; - - if (negative_number) - u = -u; - - do - *--bufp = u % 10 + '0'; - while ((u /= 10) != 0); - } - do_number_sign_and_padding: - if (negative_number) - *--bufp = '-'; - - if (pad != '-') - { - int padding = digits - (buf + sizeof (buf) - bufp); - - if (pad == '_') - { - while (0 < padding--) - *--bufp = ' '; - } - else - { - bufp += negative_number; - while (0 < padding--) - *--bufp = '0'; - if (negative_number) - *--bufp = '-'; - } - } - - cpy (buf + sizeof (buf) - bufp, bufp); - break; - - - case 'H': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (2, tp->tm_hour); - - case 'I': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (2, hour12); - - case 'k': /* GNU extension. */ - if (modifier == 'E') - goto bad_format; - - DO_NUMBER_SPACEPAD (2, tp->tm_hour); - - case 'l': /* GNU extension. */ - if (modifier == 'E') - goto bad_format; - - DO_NUMBER_SPACEPAD (2, hour12); - - case 'j': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (3, 1 + tp->tm_yday); + case L_('B'): + if (modifier != 0) + goto bad_format; + if (change_case) + { + to_uppcase = true; + to_lowcase = false; + } +#ifdef _NL_CURRENT + cpy (STRLEN (f_month), f_month); + break; +#else + goto underlying_strftime; +#endif - case 'M': - if (modifier == 'E') - goto bad_format; + 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 + goto underlying_strftime; +#endif - DO_NUMBER (2, tp->tm_min); + subformat: + { + size_t len = strftime_case_ (to_uppcase, + NULL, STRFTIME_ARG ((size_t) -1) + subfmt, + tp extra_args LOCALE_ARG); + add (len, strftime_case_ (to_uppcase, p, + STRFTIME_ARG (maxsize - i) + subfmt, + tp extra_args LOCALE_ARG)); + } + break; + +#if !(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[5]; + 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 - case 'm': - if (modifier == 'E') - goto bad_format; + /* The space helps distinguish strftime failure from empty + output. */ + *u++ = ' '; + *u++ = '%'; + if (modifier != 0) + *u++ = modifier; + *u++ = format_char; + *u = '\0'; + len = strftime (ubuf, sizeof ubuf, ufmt, tp); + if (len != 0) + cpy (len - 1, ubuf + 1); + } + break; +#endif - DO_NUMBER (2, tp->tm_mon + 1); + 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 + goto underlying_strftime; +#endif + } - case 'n': /* POSIX.2 extension. */ - add (1, *p = '\n'); - break; + { + int century = tp->tm_year / 100 + TM_YEAR_BASE / 100; + century -= tp->tm_year % 100 < 0 && 0 < century; + DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century); + } - case 'p': - cpy (ap_len, ampm); - break; + 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 + goto underlying_strftime; +#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 (or U_NUMBER_VALUE) + and then jump to one of these labels. */ + + do_tz_offset: + always_output_a_sign = true; + goto do_number_body; + + do_number_spacepad: + /* Force '_' flag unless overridden by '0' or '-' flag. */ + if (pad != L_('0') && pad != L_('-')) + pad = L_('_'); + + do_number: + /* Format NUMBER_VALUE according to the MODIFIER flag. */ + negative_number = number_value < 0; + u_number_value = number_value; + + do_signed_number: + always_output_a_sign = false; + tz_colon_mask = 0; + + do_number_body: + /* Format U_NUMBER_VALUE according to the MODIFIER flag. + NEGATIVE_NUMBER is nonzero if the original number was + negative; in this case it was converted directly to + unsigned int (i.e., modulo (UINT_MAX + 1)) without + negating it. */ + if (modifier == L_('O') && !negative_number) + { +#ifdef _NL_CURRENT + /* Get the locale specific alternate representation of + the number. If none exist NULL is returned. */ + const CHAR_T *cp = nl_get_alt_digit (u_number_value + HELPER_LOCALE_ARG); + + if (cp != NULL) + { + size_t digitlen = STRLEN (cp); + if (digitlen != 0) + { + cpy (digitlen, cp); + break; + } + } +#else + goto underlying_strftime; +#endif + } + + bufp = buf + sizeof (buf) / sizeof (buf[0]); + + if (negative_number) + u_number_value = - u_number_value; + + do + { + if (tz_colon_mask & 1) + *--bufp = ':'; + tz_colon_mask >>= 1; + *--bufp = u_number_value % 10 + L_('0'); + u_number_value /= 10; + } + while (u_number_value != 0 || tz_colon_mask != 0); + + do_number_sign_and_padding: + if (digits < width) + digits = width; + + sign_char = (negative_number ? L_('-') + : always_output_a_sign ? L_('+') + : 0); + + if (pad == L_('-')) + { + if (sign_char) + add1 (sign_char); + } + else + { + int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) + - bufp) - !!sign_char; + + 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; + if (sign_char) + add1 (sign_char); + } + else + { + if ((size_t) digits >= maxsize - i) + return 0; + + if (sign_char) + add1 (sign_char); + + if (p) + memset_zero (p, padding); + i += padding; + width = 0; + } + } + else + { + if (sign_char) + add1 (sign_char); + } + } + + 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_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U); + + 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_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U); + +#ifndef _LIBC + case L_('N'): /* GNU extension. */ + if (modifier == L_('E')) + goto bad_format; + + number_value = ns; + if (width == -1) + width = 9; + else + { + /* Take an explicit width less than 9 as a precision. */ + int j; + for (j = width; j < 9; j++) + number_value /= 10; + } + + DO_NUMBER (width, number_value); +#endif - case 'R': /* GNU extension. */ - subfmt = "%H:%M"; - goto subformat; + case L_('n'): + add1 (L_('\n')); + break; - case 'r': /* POSIX.2 extension. */ + case L_('P'): + to_lowcase = true; +#ifndef _NL_CURRENT + format_char = L_('p'); +#endif + /* FALLTHROUGH */ + + case L_('p'): + if (change_case) + { + to_uppcase = false; + to_lowcase = true; + } #ifdef _NL_CURRENT - if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0') + cpy (ap_len, ampm); + break; +#else + goto underlying_strftime; #endif - subfmt = "%I:%M:%S %p"; - goto subformat; - - case 'S': - if (modifier == 'E') - goto bad_format; - DO_NUMBER (2, tp->tm_sec); + case L_('R'): + subfmt = L_("%H:%M"); + goto subformat; - case 's': /* GNU extension. */ - { - struct tm ltm; - time_t t; + case L_('r'): +#ifdef _NL_CURRENT + if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, + NLW(T_FMT_AMPM))) + == L_('\0')) + subfmt = L_("%I:%M:%S %p"); + goto subformat; +#else + goto underlying_strftime; +#endif - ltm = *tp; - t = mktime (<m); + case L_('S'): + if (modifier == L_('E')) + goto bad_format; - /* Generate string value for T using time_t arithmetic; - this works even if sizeof (long) < sizeof (time_t). */ + DO_NUMBER (2, tp->tm_sec); - bufp = buf + sizeof (buf); - negative_number = t < 0; + case L_('s'): /* GNU extension. */ + { + struct tm ltm; + time_t t; - do - { - int d = t % 10; - t /= 10; + ltm = *tp; + t = mktime (<m); - if (negative_number) - { - d = -d; + /* Generate string value for T using time_t arithmetic; + this works even if sizeof (long) < sizeof (time_t). */ - /* Adjust if division truncates to minus infinity. */ - if (0 < -1 % 10 && d < 0) - { - t++; - d += 10; - } - } + bufp = buf + sizeof (buf) / sizeof (buf[0]); + negative_number = t < 0; - *--bufp = d + '0'; - } - while (t != 0); + do + { + int d = t % 10; + t /= 10; + *--bufp = (negative_number ? -d : d) + L_('0'); + } + while (t != 0); - digits = 1; - goto do_number_sign_and_padding; - } + digits = 1; + always_output_a_sign = false; + goto do_number_sign_and_padding; + } - case 'X': - if (modifier == 'O') - goto bad_format; + case L_('X'): + if (modifier == L_('O')) + goto bad_format; #ifdef _NL_CURRENT - if (! (modifier == 'E' - && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0')) - subfmt = _NL_CURRENT (LC_TIME, T_FMT); - goto subformat; -#endif - /* Fall through. */ - case 'T': /* POSIX.2 extension. */ - subfmt = "%H:%M:%S"; - goto subformat; - - case 't': /* POSIX.2 extension. */ - add (1, *p = '\t'); - break; - - case 'u': /* POSIX.2 extension. */ - DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); - - case 'U': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); - - case 'V': - case 'g': /* GNU extension. */ - case 'G': /* GNU extension. */ - if (modifier == '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 'g': - DO_NUMBER (2, (year % 100 + 100) % 100); - - case 'G': - DO_NUMBER (1, year); - - default: - DO_NUMBER (2, days / 7 + 1); - } - } - - case 'W': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); - - case 'w': - if (modifier == 'E') - goto bad_format; - - DO_NUMBER (1, tp->tm_wday); - - case 'Y': + 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 + goto underlying_strftime; +#endif + case L_('T'): + subfmt = L_("%H:%M:%S"); + goto subformat; + + case L_('t'): + add1 (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; + { + /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE) + is a leap year, except that YEAR and YEAR - 1 both work + correctly even when (tp->tm_year + TM_YEAR_BASE) would + overflow. */ + int year = (tp->tm_year + + (tp->tm_year < 0 + ? TM_YEAR_BASE % 400 + : TM_YEAR_BASE % 400 - 400)); + int year_adjust = 0; + int days = iso_week_days (tp->tm_yday, tp->tm_wday); + + if (days < 0) + { + /* This ISO week belongs to the previous year. */ + year_adjust = -1; + days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)), + 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_adjust = 1; + days = d; + } + } + + switch (*f) + { + case L_('g'): + { + int yy = (tp->tm_year % 100 + year_adjust) % 100; + DO_NUMBER (2, (0 <= yy + ? yy + : tp->tm_year < -TM_YEAR_BASE - year_adjust + ? -yy + : yy + 100)); + } + + case L_('G'): + DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust, + (tp->tm_year + (unsigned int) TM_YEAR_BASE + + year_adjust)); + + 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 - if (modifier == 'E') - { - struct era_entry *era = _nl_get_era_entry (tp); - if (era) - { - subfmt = strchr (era->name_fmt, '\0') + 1; - goto subformat; - } - } -#endif - if (modifier == 'O') - goto bad_format; - else - DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); - - case 'y': + 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 + goto underlying_strftime; +#endif + } + if (modifier == L_('O')) + goto bad_format; + else + DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE, + tp->tm_year + (unsigned int) TM_YEAR_BASE); + + case L_('y'): + if (modifier == L_('E')) + { #if HAVE_STRUCT_ERA_ENTRY - if (modifier == 'E') - { - struct era_entry *era = _nl_get_era_entry (tp); - if (era) - { - int delta = tp->tm_year - era->start_date[0]; - DO_NUMBER (1, (era->offset - + (era->direction == '-' ? -delta : delta))); - } - } -#endif - DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); - - case 'Z': - cpy(zonelen, zone); - break; - - case 'z': /* GNU extension. */ - if (tp->tm_isdst < 0) - break; - - { - int diff; + 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 + goto underlying_strftime; +#endif + } + + { + int yy = tp->tm_year % 100; + if (yy < 0) + yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100; + DO_NUMBER (2, yy); + } + + case L_('Z'): + if (change_case) + { + to_uppcase = false; + to_lowcase = true; + } + +#if HAVE_TZNAME + /* The tzset() call might have changed the value. */ + if (!(zone && *zone) && tp->tm_isdst >= 0) + zone = tzname[tp->tm_isdst != 0]; +#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_(':'): + /* :, ::, and ::: are valid only just before 'z'. + :::: etc. are rejected later. */ + for (colons = 1; f[colons] == L_(':'); colons++) + continue; + if (f[colons] != L_('z')) + goto bad_format; + f += colons; + goto do_z_conversion; + + case L_('z'): + colons = 0; + + do_z_conversion: + if (tp->tm_isdst < 0) + break; + + { + int diff; + int hour_diff; + int min_diff; + int sec_diff; #if HAVE_TM_GMTOFF - diff = tp->tm_gmtoff; + diff = tp->tm_gmtoff; #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; - localtime_r (<, &tm); - - if ((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 = '-'); - diff = -diff; - } - else - add (1, *p = '+'); - - diff /= 60; - DO_NUMBER (4, (diff / 60) * 100 + diff % 60); - } - - case '\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] != '%'; flen++) - continue; - cpy (flen, &f[1 - flen]); - } - break; - } + 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 + + hour_diff = diff / 60 / 60; + min_diff = diff / 60 % 60; + sec_diff = diff % 60; + + switch (colons) + { + case 0: /* +hhmm */ + DO_TZ_OFFSET (5, diff < 0, 0, hour_diff * 100 + min_diff); + + case 1: tz_hh_mm: /* +hh:mm */ + DO_TZ_OFFSET (6, diff < 0, 04, hour_diff * 100 + min_diff); + + case 2: tz_hh_mm_ss: /* +hh:mm:ss */ + DO_TZ_OFFSET (9, diff < 0, 024, + hour_diff * 10000 + min_diff * 100 + sec_diff); + + case 3: /* +hh if possible, else +hh:mm, else +hh:mm:ss */ + if (sec_diff != 0) + goto tz_hh_mm_ss; + if (min_diff != 0) + goto tz_hh_mm; + DO_TZ_OFFSET (3, diff < 0, 0, hour_diff); + + default: + goto bad_format; + } + } + + 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) - *p = '\0'; +#if ! FPRINTFTIME + if (p && maxsize != 0) + *p = L_('\0'); +#endif + return i; } + +/* 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) -1 for MAXSIZE. */ +size_t +my_strftime (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) + const CHAR_T *format, + const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) +{ + return strftime_case_ (false, s, STRFTIME_ARG (maxsize) + format, tp extra_args LOCALE_ARG); +} + +#if defined _LIBC && ! FPRINTFTIME +libc_hidden_def (my_strftime) +#endif + + +#if defined emacs && ! FPRINTFTIME +/* For Emacs we have a separate interface which corresponds to the normal + strftime function plus the ut argument, but without the ns argument. */ +size_t +emacs_strftimeu (char *s, size_t maxsize, const char *format, + const struct tm *tp, int ut) +{ + return my_strftime (s, maxsize, format, tp, ut, 0); +} +#endif