-/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library 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
-Library General Public License for more details.
+ The GNU C Library 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
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. 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>
+#if defined emacs && !defined HAVE_BCOPY
+# define HAVE_MEMCPY 1
+#endif
+
+#include <ctype.h>
#include <sys/types.h> /* Some systems define `time_t' here. */
-#include <time.h>
-#if HAVE_MBLEN
-# include <ctype.h>
+#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 <stdlib.h>
# include <string.h>
#else
-# define memcpy(d, s, n) bcopy (s, d, n)
+# ifndef HAVE_MEMCPY
+# define memcpy(d, s, n) bcopy ((s), (d), (n))
+# endif
#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
-static unsigned int week __P((const struct tm *const, int));
+#ifndef NULL
+# define NULL 0
+#endif
+#define TYPE_SIGNED(t) ((t) -1 < 0)
-#define add(n, f) \
+/* 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 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
+# 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. */
+# undef gmtime_r
+# 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. */
+# undef localtime_r
+# define localtime_r my_ftime_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. */
+/* 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 spaces[16] = /* " " */
+ { ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ' };
+static const char zeroes[16] = /* "0000000000000000" */
+ { '0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0' };
+
+# 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)
+
+# define memset_zero(P, Len) \
+ do { \
+ int _len = (Len); \
+ \
+ do \
+ { \
+ int _this = _len > 16 ? 16 : _len; \
+ memcpy ((P), zeroes, _this); \
+ (P) += _this; \
+ _len -= _this; \
+ } \
+ while (_len > 0); \
+ } while (0)
+#else
+# define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
+# define memset_zero(P, Len) (memset ((P), '0', (Len)), (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) \
+ { \
+ if (pad == '0') \
+ memset_zero (p, _delta); \
+ else \
+ 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 ((unsigned char) 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 ((unsigned char) src[len]);
+ 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 */
-/* Return the week in the year specified by TP,
- with weeks starting on STARTING_DAY. */
-#ifdef __GNUC__
-inline
+/* 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)
- const struct tm *const tp;
- int starting_day;
+static int
+iso_week_days (yday, wday)
+ int yday;
+ int wday;
{
- int wday, dl;
-
- wday = tp->tm_wday - starting_day;
- if (wday < 0)
- wday += 7;
-
- /* Set DL to the day in the year of the last day of the week previous to the
- one containing the day specified in TP. If DL is negative or zero, the
- day specified in TP is in the first week of the year. Otherwise,
- calculate the number of complete weeks before our week (DL / 7) and
- add any partial week at the start of the year (DL % 7). */
- dl = tp->tm_yday - wday;
- return dl <= 0 ? 0 : ((dl / 7) + ((dl % 7) == 0 ? 0 : 1));
+ /* 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
+
+#if !(defined _NL_CURRENT || HAVE_STRFTIME)
static char const weekday_name[][10] =
{
"Sunday", "Monday", "Tuesday", "Wednesday",
};
#endif
+
+#ifdef emacs
+# define my_strftime emacs_strftime
+ /* Emacs 20.2 uses `-Dstrftime=emacs_strftime' when compiling,
+ because that's how strftime used to be configured.
+ Undo this, since it gets in the way of accessing the underlying strftime,
+ which is needed for things like %Ec in Solaris.
+ The following two lines can be removed once Emacs stops compiling with
+ `-Dstrftime=emacs_strftime'. */
+# undef strftime
+size_t strftime __P ((char *, size_t, const char *, const struct tm *));
+#else
+# define my_strftime strftime
+#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
+ my_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);
+ }
+# undef my_strftime
+# define my_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
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)
+my_strftime (s, maxsize, format, tp)
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 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 > 12 ? PM_STR : AM_STR);
- size_t aw_len = strlen(a_wkday);
- size_t am_len = strlen(a_month);
+ 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
+# if !HAVE_STRFTIME
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 > 12);
+ const char *const ampm = "AMPM" + 2 * (hour12 > 11);
size_t aw_len = 3;
size_t am_len = 3;
size_t ap_len = 2;
+# endif
+#endif
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+ size_t wkday_len = strlen (f_wkday);
+ size_t month_len = strlen (f_month);
#endif
- size_t wkday_len = strlen(f_wkday);
- size_t month_len = strlen(f_month);
- const unsigned int y_week0 = week (tp, 0);
- const unsigned int y_week1 = week (tp, 1);
const char *zone;
size_t zonelen;
- register size_t i = 0;
- register char *p = s;
- register const char *f;
- char number_fmt[5];
+ size_t i = 0;
+ char *p = s;
+ const char *f;
- /* Initialize the buffer we will use for the sprintf format for numbers. */
- number_fmt[0] = '%';
-
- 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
+ /* 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;
+ int change_case = 0;
+ int format_char;
+
+#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;
-#if HAVE_MBLEN
- if (!isascii(*f))
+ 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 != '%')
{
- /* Non-ASCII, may be a multibyte. */
- int len = mblen(f, strlen(f));
- if (len > 0)
+ add (1, *p = *f);
+ continue;
+ }
+
+#endif /* ! DO_MULTIBYTE */
+
+ /* Check for flags that can modify a format. */
+ pad = 0;
+ while (1)
+ {
+ 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;
+ case '#':
+ change_case = 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)
+ format_char = *f;
+ switch (format_char)
{
- case '\0':
+#define DO_NUMBER(d, v) \
+ digits = width == -1 ? d : width; \
+ number_value = v; goto do_number
+#define DO_NUMBER_SPACEPAD(d, v) \
+ digits = width == -1 ? d : width; \
+ 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;
+ 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':
- cpy(wkday_len, f_wkday);
+ if (modifier != 0)
+ goto bad_format;
+ if (change_case)
+ {
+ to_uppcase = 1;
+ to_lowcase = 0;
+ }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+ cpy (wkday_len, f_wkday);
break;
+#else
+ goto underlying_strftime;
+#endif
case 'b':
- case 'h': /* GNU extension. */
- cpy(am_len, a_month);
+ case 'h': /* POSIX.2 extension. */
+ if (modifier != 0)
+ goto bad_format;
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+ cpy (am_len, a_month);
break;
+#else
+ goto underlying_strftime;
+#endif
case 'B':
- cpy(month_len, f_month);
+ if (modifier != 0)
+ goto bad_format;
+ if (change_case)
+ {
+ to_uppcase = 1;
+ to_lowcase = 0;
+ }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+ cpy (month_len, f_month);
break;
+#else
+ goto underlying_strftime;
+#endif
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";
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# else
+ subfmt = "%a %b %e %H:%M:%S %Y";
+# endif
#endif
+
subformat:
{
- size_t len = strftime (p, maxsize - i, subfmt, tp);
+ char *old_start = p;
+ size_t len = my_strftime (NULL, maxsize - i, subfmt, tp);
if (len == 0 && *subfmt)
return 0;
- add(len, );
+ add (len, my_strftime (p, maxsize - i, subfmt, tp));
+
+ if (to_uppcase)
+ while (old_start < p)
+ {
+ *old_start = TOUPPER ((unsigned char) *old_start);
+ ++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;
+ *u++ = '%';
+ if (modifier != 0)
+ *u++ = modifier;
+ *u++ = format_char;
+ *u = '\0';
+ len = strftime (ubuf, sizeof ubuf, ufmt, tp);
+ if (len == 0)
+ return 0;
+ cpy (len, ubuf);
}
break;
+#endif
-#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': /* POSIX.2 extension. */
+ if (modifier == 'O')
+ goto bad_format;
+ if (modifier == 'E')
+ {
+#if HAVE_STRUCT_ERA_ENTRY
+ struct era_entry *era = _nl_get_era_entry (tp);
+ if (era)
+ {
+ size_t len = strlen (era->name_fmt);
+ cpy (len, era->name_fmt);
+ break;
+ }
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# endif
+#endif
+ }
- case 'C':
- DO_NUMBER (2, (1900 + tp->tm_year) / 100);
+ {
+ 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
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# else
/* Fall through. */
- case 'D': /* GNU extension. */
+# endif
+#endif
+ 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. */
+
+ if (modifier == '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 *cp = _nl_get_alt_digit (number_value);
+
+ if (cp != NULL)
+ {
+ size_t digitlen = strlen (cp);
+ if (digitlen != 0)
+ {
+ cpy (digitlen, cp);
+ break;
+ }
+ }
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# endif
+#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 (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;
+#if !defined _NL_CURRENT && HAVE_STRFTIME
+ format_char = 'p';
+#endif
+ /* FALLTHROUGH */
+
case 'p':
- cpy(ap_len, ampm);
+ 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 '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
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# else
/* Fall through. */
- case 'T': /* GNU extenstion. */
+# endif
+#endif
+ 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':
+ 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 (modifier == 'E')
+ {
+#if HAVE_STRUCT_ERA_ENTRY
+ struct era_entry *era = _nl_get_era_entry (tp);
+ if (era)
+ {
+ subfmt = strchr (era->name_fmt, '\0') + 1;
+ goto subformat;
+ }
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# endif
+#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 (modifier == 'E')
+ {
+#if HAVE_STRUCT_ERA_ENTRY
+ 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)));
+ }
+#else
+# if HAVE_STRFTIME
+ goto underlying_strftime;
+# endif
+#endif
+ }
+ DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
case 'Z':
- cpy(zonelen, zone);
+ if (change_case)
+ {
+ to_uppcase = 0;
+ to_lowcase = 1;
+ }
+ 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;
}
}
projects / platform / upstream / linaro-glibc.git / blobdiff