-/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 2, 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
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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. */
+ 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 <config.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 <ansidecl.h>
# include "../locale/localeinfo.h"
#endif
-#include <stdio.h>
+#include <ctype.h>
#include <sys/types.h> /* Some systems define `time_t' here. */
#ifdef TIME_WITH_SYS_TIME
# include <time.h>
# endif
#endif
+#if HAVE_TZNAME
+extern char *tzname[];
+#endif
-#if HAVE_MBLEN
-# include <ctype.h>
+/* 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 <stdlib.h>
# include <string.h>
#else
-# define memcpy(d, s, n) bcopy (s, d, n)
+# define memcpy(d, s, n) bcopy ((s), (d), (n))
#endif
#ifndef __P
-#if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
-#define __P(args) args
-#else
-#define __P(args) ()
-#endif /* GCC. */
+# 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 *
+# 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
-static unsigned int week __P((const struct tm *const, int, int));
+#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 / 100 + 1 + TYPE_SIGNED (t))
-#define add(n, f) \
+#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 gmtime_r __gmtime_r
+# define localtime_r __localtime_r
+extern int __tz_compute __P ((time_t timer, const struct tm *tm));
+# define tzname __tzname
+# define tzset __tzset
+#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;
+{
+ struct tm *l = gmtime (t);
+ if (! l)
+ return 0;
+ *tp = *l;
+ return tp;
+}
+# 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;
+{
+ struct tm *l = localtime (t);
+ if (! l)
+ return 0;
+ *tp = *l;
+ return tp;
+}
+# endif /* ! HAVE_LOCALTIME_R */
+#endif /* ! defined (_LIBC) */
+
+
+#if !defined (memset) && !defined (HAVE_MEMSET) && !defined (_LIBC)
+/* Some systems lack the `memset' function and we don't want to
+ introduce additional dependencies. */
+static const char spaces[16] = " ";
+
+# define memset_space(P, Len) \
+ do { \
+ int _len = (Len); \
+ \
+ do \
+ { \
+ int _this = _len > 16 ? 16 : _len; \
+ memcpy ((P), spaces, _this); \
+ (P) += _this; \
+ _len -= _this; \
+ } \
+ while (_len > 0); \
+ } while (0)
+#else
+# define memset_space(P, Len) memset ((P), ' ', (Len))
+#endif
+
+#define add(n, f) \
do \
{ \
- i += (n); \
- if (i >= maxsize) \
+ int _n = (n); \
+ int _delta = width - _n; \
+ int _incr = _n + (_delta > 0 ? _delta : 0); \
+ if (i + _incr >= maxsize) \
return 0; \
- else \
- if (p) \
- { \
- f; \
- p += (n); \
- } \
+ if (p) \
+ { \
+ if (_delta > 0) \
+ memset_space (p, _delta); \
+ f; \
+ p += _n; \
+ } \
+ i += _incr; \
} while (0)
-#define cpy(n, s) add((n), memcpy((PTR) p, (PTR) (s), (n)))
+
+#define cpy(n, s) \
+ add ((n), \
+ if (to_lowcase) \
+ memcpy_lowcase (p, (s), _n); \
+ else if (to_uppcase) \
+ memcpy_uppcase (p, (s), _n); \
+ else \
+ memcpy ((PTR) p, (PTR) (s), _n))
+
+
#ifdef _LIBC
-#define fmt(n, args) add((n), if (sprintf args != (n)) return 0)
+# define TOUPPER(Ch) toupper (Ch)
+# define TOLOWER(Ch) tolower (Ch)
#else
-#define fmt(n, args) add((n), sprintf args; if (strlen (p) != (n)) return 0)
+# define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch))
+# define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
#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) - '0' <= 9)
+
+static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len));
+
+static char *
+memcpy_lowcase (dest, src, len)
+ char *dest;
+ const char *src;
+ size_t len;
+{
+ while (len-- > 0)
+ dest[len] = TOLOWER (src[len]);
+ return dest;
+}
+
+static char *memcpy_uppcase __P ((char *dest, const char *src, size_t len));
+
+static char *
+memcpy_uppcase (dest, src, len)
+ char *dest;
+ const char *src;
+ size_t len;
+{
+ while (len-- > 0)
+ dest[len] = TOUPPER (src[len]);
+ return dest;
+}
+
+#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 *));
+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 */
-/* Return the week in the year specified by TP,
- with weeks starting on STARTING_DAY. */
-#ifdef __GNUC__
+/* 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 unsigned int
-week (tp, starting_day, max_preceding)
- const struct tm *const tp;
- int starting_day;
- int max_preceding;
+static int
+iso_week_days (yday, wday)
+ int yday;
+ int wday;
{
- int wday, dl, base;
-
- wday = tp->tm_wday - starting_day;
- if (wday < 0)
- wday += 7;
-
- /* Set DL to the day in the year of the first day of the week
- containing the day specified in TP. */
- dl = tp->tm_yday - wday;
-
- /* For the computation following ISO 8601:1988 we set the number of
- the week containing January 1st to 1 if this week has more than
- MAX_PRECEDING days in the new year. For ISO 8601 this number is
- 3, for the other representation it is 7 (i.e., not to be
- fulfilled). */
- base = ((dl + 7) % 7) > max_preceding ? 1 : 0;
-
- /* If DL is negative we compute the result as 0 unless we have to
- compute it according ISO 8601. In this case we have to return 53
- or 1 if the week containing January 1st has less than 4 days in
- the new year or not. If DL is not negative we calculate the
- number of complete weeks for our week (DL / 7) plus 1 (because
- only for DL < 0 we are in week 0/53 and plus the number of the
- first week computed in the last step. */
- return dl < 0 ? (dl < -max_preceding ? 53 : base)
- : base + 1 + dl / 7;
+ /* 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);
}
+
#ifndef _NL_CURRENT
static char const weekday_name[][10] =
{
};
#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 *));
+ size_t
+ strftime (s, maxsize, format, tp)
+ char *s;
+ size_t maxsize;
+ const char *format;
+ const struct tm *tp;
+ {
+ struct tm tmcopy;
+ tmcopy = *tp;
+ return _strftime_copytm (s, maxsize, format, &tmcopy);
+ }
+# ifdef strftime
+# undef strftime
+# endif
+# define strftime(S, Maxsize, Format, Tp) \
+ _strftime_copytm ((S), (Maxsize), (Format), (Tp))
+#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
char *s;
size_t maxsize;
const char *format;
- register const struct tm *tp;
+ const struct tm *tp;
{
int hour12 = tp->tm_hour;
#ifdef _NL_CURRENT
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 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];
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);
- const unsigned int y_week0 = week (tp, 0, 7);
- const unsigned int y_week1 = week (tp, 1, 7);
- const unsigned int y_week2 = week (tp, 1, 3);
+ size_t wkday_len = strlen (f_wkday);
+ size_t month_len = strlen (f_month);
const char *zone;
size_t zonelen;
- register size_t i = 0;
- register char *p = s;
- register const char *f;
- char number_fmt[5];
-
- /* Initialize the buffer we will use for the sprintf format for numbers. */
- number_fmt[0] = '%';
-
- zone = 0;
-#if HAVE_TM_ZONE
+ size_t i = 0;
+ char *p = s;
+ const char *f;
+
+ zone = NULL;
+#if !defined _LIBC && HAVE_TM_ZONE
+ /* XXX We have some problems here. First, the string pointed to by
+ tm_zone is dynamically allocated while loading the zone data. But
+ when another zone is loaded since the information in TP were
+ computed this would be a stale pointer.
+ The second problem is the POSIX test suite which assumes 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. --drepper@gnu */
zone = (const char *) tp->tm_zone;
#endif
#if HAVE_TZNAME
+ /* POSIX.1 8.1.1 requires that whenever strftime() is called, the
+ time zone names contained in the external variable `tzname' shall
+ be set as if the tzset() function had been called. */
+# if HAVE_TZSET
+ tzset ();
+# endif
+
if (!(zone && *zone) && tp->tm_isdst >= 0)
zone = tzname[tp->tm_isdst];
#endif
- if (!(zone && *zone))
- zone = "???";
+ if (! zone)
+ zone = ""; /* POSIX.2 requires the empty string here. */
zonelen = strlen (zone);
for (f = format; *f != '\0'; ++f)
{
- enum { pad_zero, pad_space, pad_none } pad; /* Padding for number. */
- unsigned int maxdigits; /* Max digits for numeric format. */
- unsigned int number_value; /* Numeric value to be printed. */
+ 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))];
+ int width = -1;
+ int to_lowcase = 0;
+ int to_uppcase = 0;
+
+#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;
+ }
+ }
+
+#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;
+ }
+
+#endif /* ! DO_MULTIBYTE */
-#if HAVE_MBLEN
- if (!isascii(*f))
+ /* Check for flags that can modify a format. */
+ pad = 0;
+ while (1)
{
- /* Non-ASCII, may be a multibyte. */
- int len = mblen(f, strlen(f));
- if (len > 0)
+ switch (*++f)
{
- cpy(len, f);
+ /* This influences the number formats. */
+ case '_':
+ case '-':
+ case '0':
+ pad = *f;
continue;
+
+ /* This changes textual output. */
+ case '^':
+ to_uppcase = 1;
+ continue;
+
+ default:
+ break;
}
+ break;
}
-#endif
- if (*f != '%')
+ /* As a GNU extension we allow to specify the field width. */
+ if (ISDIGIT (*f))
{
- add(1, *p = *f);
- continue;
+ width = 0;
+ do
+ {
+ width *= 10;
+ width += *f - '0';
+ ++f;
+ }
+ while (ISDIGIT (*f));
}
- /* Check for flags that can modify a number format. */
- ++f;
+ /* Check for modifiers. */
switch (*f)
{
- case '_':
- pad = pad_space;
- ++f;
- break;
- case '-':
- pad = pad_none;
- ++f;
+ case 'E':
+ case 'O':
+ modifier = *f++;
break;
+
default:
- pad = pad_zero;
+ modifier = 0;
break;
}
/* Now do the specified format. */
switch (*f)
{
- case '\0':
+#define DO_NUMBER(d, v) \
+ digits = d; number_value = v; goto do_number
+#define DO_NUMBER_SPACEPAD(d, v) \
+ digits = d; number_value = v; goto do_number_spacepad
+
case '%':
- add(1, *p = *f);
+ if (modifier != 0)
+ goto bad_format;
+ add (1, *p = *f);
break;
case 'a':
- cpy(aw_len, a_wkday);
+ if (modifier != 0)
+ goto bad_format;
+ cpy (aw_len, a_wkday);
break;
case 'A':
- cpy(wkday_len, f_wkday);
+ if (modifier != 0)
+ goto bad_format;
+ cpy (wkday_len, f_wkday);
break;
case 'b':
- case 'h': /* GNU extension. */
- cpy(am_len, a_month);
+ case 'h': /* POSIX.2 extension. */
+ if (modifier != 0)
+ goto bad_format;
+ cpy (am_len, a_month);
break;
case 'B':
- cpy(month_len, f_month);
+ if (modifier != 0)
+ goto bad_format;
+ cpy (month_len, f_month);
break;
case 'c':
+ if (modifier == 'O')
+ goto bad_format;
#ifdef _NL_CURRENT
- subfmt = _NL_CURRENT (LC_TIME, D_T_FMT);
+ if (! (modifier == 'E'
+ && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0'))
+ subfmt = _NL_CURRENT (LC_TIME, D_T_FMT);
#else
- subfmt = "%a %b %d %H:%M:%S %Z %Y";
+ subfmt = "%a %b %e %H:%M:%S %Y";
#endif
+
subformat:
{
- size_t len = strftime (p, maxsize - i, subfmt, tp);
+ char *old_start = p;
+ size_t len = strftime (NULL, maxsize - i, subfmt, tp);
if (len == 0 && *subfmt)
return 0;
- add(len, );
+ add (len, strftime (p, maxsize - i, subfmt, tp));
+
+ if (to_uppcase)
+ while (old_start < p)
+ {
+ *old_start = TOUPPER (*old_start);
+ ++old_start;
+ }
}
break;
-#define DO_NUMBER(digits, value) \
- maxdigits = digits; number_value = value; goto do_number
-#define DO_NUMBER_NOPAD(digits, value) \
- maxdigits = digits; number_value = value; goto do_number_nopad
-
- case 'C':
- DO_NUMBER (2, (1900 + tp->tm_year) / 100);
+ 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;
#ifdef _NL_CURRENT
- subfmt = _NL_CURRENT (LC_TIME, D_FMT);
+ if (! (modifier == 'E'
+ && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0'))
+ subfmt = _NL_CURRENT (LC_TIME, D_FMT);
goto subformat;
#endif
/* Fall through. */
- case 'D': /* GNU extension. */
+ 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': /* GNU extension: %d, but blank-padded. */
- DO_NUMBER_NOPAD (2, tp->tm_mday);
+ case 'e': /* POSIX.2 extension. */
+ if (modifier == 'E')
+ goto bad_format;
- /* All numeric formats set MAXDIGITS and NUMBER_VALUE and then
+ 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_nopad:
- /* Force `-' flag. */
- pad = pad_none;
+ do_number_spacepad:
+ /* Force `_' flag unless overwritten by `0' flag. */
+ if (pad != '0')
+ pad = '_';
do_number:
+ /* Format the number according to the MODIFIER flag. */
+
+#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;
+ }
+ }
+ }
+#endif
{
- /* Format the number according to the PAD flag. */
+ unsigned int u = number_value;
- register char *nf = &number_fmt[1];
- int printed;
+ bufp = buf + sizeof (buf);
+ negative_number = number_value < 0;
- switch (pad)
- {
- case pad_zero:
- *nf++ = '0';
- case pad_space:
- *nf++ = '0' + maxdigits;
- case pad_none:
- *nf++ = 'u';
- *nf = '\0';
- }
+ if (negative_number)
+ u = -u;
-#ifdef _LIBC
- add (maxdigits, printed = sprintf (p, number_fmt, number_value));
-#else
- add (maxdigits, sprintf (p, number_fmt, number_value);
- printed = strlen (p));
-#endif
+ do
+ *--bufp = u % 10 + '0';
+ while ((u /= 10) != 0);
+ }
- break;
- }
+ 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. */
- DO_NUMBER_NOPAD (2, tp->tm_hour);
+ if (modifier == 'E')
+ goto bad_format;
+
+ DO_NUMBER_SPACEPAD (2, tp->tm_hour);
case 'l': /* GNU extension. */
- DO_NUMBER_NOPAD (2, hour12);
+ 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 'M':
+ if (modifier == 'E')
+ goto bad_format;
+
DO_NUMBER (2, tp->tm_min);
case 'm':
+ if (modifier == 'E')
+ goto bad_format;
+
DO_NUMBER (2, tp->tm_mon + 1);
- case 'n': /* GNU extension. */
+ case 'n': /* POSIX.2 extension. */
add (1, *p = '\n');
break;
+ case 'P':
+ to_lowcase = 1;
+ /* FALLTHROUGH */
+
case 'p':
- cpy(ap_len, ampm);
+ cpy (ap_len, ampm);
break;
case 'R': /* GNU extension. */
subfmt = "%H:%M";
goto subformat;
- case 'r': /* GNU extension. */
- subfmt = "%I:%M:%S %p";
+ case 'r': /* POSIX.2 extension. */
+#ifdef _NL_CURRENT
+ if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0')
+#endif
+ subfmt = "%I:%M:%S %p";
goto subformat;
case 'S':
+ if (modifier == 'E')
+ goto bad_format;
+
DO_NUMBER (2, tp->tm_sec);
+ case '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);
+ 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 + '0';
+ }
+ while (t != 0);
+
+ digits = 1;
+ goto do_number_sign_and_padding;
+ }
+
case 'X':
+ if (modifier == 'O')
+ goto bad_format;
#ifdef _NL_CURRENT
- subfmt = _NL_CURRENT (LC_TIME, T_FMT);
+ 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': /* GNU extenstion. */
+ case 'T': /* POSIX.2 extension. */
subfmt = "%H:%M:%S";
goto subformat;
- case 't': /* GNU extenstion. */
+ 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':
- DO_NUMBER (2, y_week0);
+ if (modifier == 'E')
+ goto bad_format;
+
+ DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
case 'V':
- DO_NUMBER (2, y_week2);
+ 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':
- DO_NUMBER (2, y_week1);
+ if (modifier == 'E')
+ goto bad_format;
+
+ DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
case 'w':
- DO_NUMBER (2, tp->tm_wday);
+ if (modifier == 'E')
+ goto bad_format;
+
+ DO_NUMBER (1, tp->tm_wday);
case 'Y':
- DO_NUMBER (4, 1900 + tp->tm_year);
+#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':
- DO_NUMBER (2, tp->tm_year % 100);
+#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);
+ cpy (zonelen, zone);
break;
+ case 'z': /* GNU extension. */
+ if (tp->tm_isdst < 0)
+ break;
+
+ {
+ int diff;
+#if HAVE_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:
- /* Bad format. */
+ /* 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;
}
}