-/* Copyright (C) 1991-1999, 2000, 2001, 2003, 2004 Free Software
+/* Copyright (C) 1991-1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007 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.
- This program is free software; you can redistribute it and/or modify
+ 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.
+ 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
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. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef _LIBC
# define HAVE_MBLEN 1
# define HAVE_TZSET 1
# define MULTIBYTE_IS_FORMAT_SAFE 1
# include "../locale/localeinfo.h"
+#else
+# include <config.h>
+# if FPRINTFTIME
+# include "fprintftime.h"
+# endif
#endif
#include <ctype.h>
-#include <sys/types.h> /* Some systems define `time_t' here. */
+#include <time.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
+#if HAVE_TZNAME && !HAVE_DECL_TZNAME
extern char *tzname[];
#endif
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 && HAVE_WCHAR_H && ! MULTIBYTE_IS_FORMAT_SAFE)
+#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)
#if DO_MULTIBYTE
# if HAVE_MBRLEN
#endif
#include <limits.h>
+#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
# endif
#endif
-#define TYPE_SIGNED(t) ((t) -1 < 0)
-
-/* Bound on length of the string representing an integer value of type t.
- Subtract one for the sign bit if t is signed;
- 302 / 1000 is log10 (2) rounded up;
- add one for integer division truncation;
- add one more for a minus sign if t is signed. */
+/* 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 / 1000 + 1 + TYPE_SIGNED (t))
+ ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2)
#define TM_YEAR_BASE 1900
#endif
#if !HAVE_TM_GMTOFF
-/* Portable standalone applications should supply a "time_r.h" that
+/* 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. */
-# include "time_r.h"
# undef __gmtime_r
# undef __localtime_r
# define __gmtime_r gmtime_r
#endif
-#ifdef COMPILE_WIDE
+#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_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 \
{ \
return 0; \
if (p) \
{ \
- if (_delta > 0) \
+ if (digits == 0 && _delta > 0) \
{ \
if (pad == L_('0')) \
memset_zero (p, _delta); \
memset_space (p, _delta); \
} \
f; \
- p += _n; \
+ advance (p, _n); \
} \
i += _incr; \
} while (0)
-#define cpy(n, s) \
+#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), \
+ if (to_lowcase) \
+ fwrite_lowcase (p, (s), _n); \
+ else if (to_uppcase) \
+ fwrite_uppcase (p, (s), _n); \
+ else \
+ fwrite ((s), _n, 1, p))
+#else
+# define cpy(n, s) \
add ((n), \
if (to_lowcase) \
memcpy_lowcase (p, (s), _n LOCALE_ARG); \
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
# define TOLOWER(Ch, L) towlower (Ch)
# endif
#else
-# ifdef _LIBC
-# ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# define TOUPPER(Ch, L) __toupper_l (Ch, L)
-# define TOLOWER(Ch, L) __tolower_l (Ch, L)
-# else
-# define TOUPPER(Ch, L) toupper (Ch)
-# define TOLOWER(Ch, L) tolower (Ch)
-# endif
+# 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) (islower (Ch) ? toupper (Ch) : (Ch))
-# define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
+# define TOUPPER(Ch, L) toupper (Ch)
+# define TOLOWER(Ch, L) tolower (Ch)
# endif
#endif
/* We don't use `isdigit' here since the locale dependent
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)
+{
+ while (len-- > 0)
+ {
+ fputc (TOLOWER ((UCHAR_T) *src, loc), fp);
+ ++src;
+ }
+}
+
+static void
+fwrite_uppcase (FILE *fp, const CHAR_T *src, size_t len)
+{
+ 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)
dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
return dest;
}
+#endif
#if ! HAVE_TM_GMTOFF
/* 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
}
-#if !(defined _NL_CURRENT || HAVE_STRFTIME)
-static CHAR_T const weekday_name[][10] =
- {
- L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
- L_("Thursday"), L_("Friday"), L_("Saturday")
- };
-static CHAR_T const month_name[][10] =
- {
- L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
- L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
- L_("November"), L_("December")
- };
-#endif
-
-
/* 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
# define my_strftime nstrftime
#endif
+#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
-# ifdef COMPILE_WIDE
+# if defined COMPILE_WIDE
# define my_strftime wcsftime
# define nl_get_alt_digit _nl_get_walt_digit
# else
# define ns 0
#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 use the tzset and localtime
- wrappers to work around the bug. */
-"you must run the autoconf test for a working tzset function"
-#endif
-
-/* Write information from TP into S according to the format
- string FORMAT, writing no more that MAXSIZE characters
- (including the terminating '\0') and returning number of
- characters written. If S is NULL, nothing will be written
- anywhere, so to determine how many characters would be
- written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
-size_t
-my_strftime (CHAR_T *s, size_t maxsize, const CHAR_T *format,
- const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO)
+/* 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
# define aw_len STRLEN (a_wkday)
# define am_len STRLEN (a_month)
# define ap_len STRLEN (ampm)
-#else
-# if !HAVE_STRFTIME
-# define f_wkday (weekday_name[tp->tm_wday])
-# define f_month (month_name[tp->tm_mon])
-# define a_wkday f_wkday
-# define a_month f_month
-# define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
-
- size_t aw_len = 3;
- size_t am_len = 3;
- size_t ap_len = 2;
-# endif
#endif
const char *zone;
size_t i = 0;
- CHAR_T *p = s;
+ 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 = NULL;
#if HAVE_TM_ZONE
/* The POSIX test suite assumes that setting
{
int pad = 0; /* Padding for number ('-', '_', or 0). */
int modifier; /* Field modifier ('E', 'O', or 0). */
- int digits; /* Max digits for numeric format. */
+ int digits = 0; /* Max digits for numeric format. */
int number_value; /* Numeric value to be printed. */
- int negative_number; /* 1 if the number is negative. */
+ 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 + (sizeof (int) < sizeof (time_t)
- ? INT_STRLEN_BOUND (time_t)
- : INT_STRLEN_BOUND (int))];
+ 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;
- int to_lowcase = 0;
- int to_uppcase = 0;
- int change_case = 0;
+ bool to_lowcase = false;
+ bool to_uppcase = upcase;
+ size_t colons;
+ bool change_case = false;
int format_char;
#if DO_MULTIBYTE && !defined COMPILE_WIDE
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);
+ add1 (*f);
continue;
default:
or this is the wide character version. */
if (*f != L_('%'))
{
- add (1, *p = *f);
+ add1 (*f);
continue;
}
/* This changes textual output. */
case L_('^'):
- to_uppcase = 1;
+ to_uppcase = true;
continue;
case L_('#'):
- change_case = 1;
+ change_case = true;
continue;
default:
switch (format_char)
{
#define DO_NUMBER(d, v) \
- digits = d > width ? d : width; \
+ 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 > width ? d : width; \
+ digits = d; \
number_value = v; goto do_number_spacepad
case L_('%'):
if (modifier != 0)
goto bad_format;
- add (1, *p = *f);
+ add1 (*f);
break;
case L_('a'):
goto bad_format;
if (change_case)
{
- to_uppcase = 1;
- to_lowcase = 0;
+ to_uppcase = true;
+ to_lowcase = false;
}
-#if defined _NL_CURRENT || !HAVE_STRFTIME
+#ifdef _NL_CURRENT
cpy (aw_len, a_wkday);
break;
#else
goto bad_format;
if (change_case)
{
- to_uppcase = 1;
- to_lowcase = 0;
+ to_uppcase = true;
+ to_lowcase = false;
}
-#if defined _NL_CURRENT || !HAVE_STRFTIME
+#ifdef _NL_CURRENT
cpy (STRLEN (f_wkday), f_wkday);
break;
#else
case L_('h'):
if (change_case)
{
- to_uppcase = 1;
- to_lowcase = 0;
+ to_uppcase = true;
+ to_lowcase = false;
}
if (modifier != 0)
goto bad_format;
-#if defined _NL_CURRENT || !HAVE_STRFTIME
+#ifdef _NL_CURRENT
cpy (am_len, a_month);
break;
#else
goto bad_format;
if (change_case)
{
- to_uppcase = 1;
- to_lowcase = 0;
+ to_uppcase = true;
+ to_lowcase = false;
}
-#if defined _NL_CURRENT || !HAVE_STRFTIME
+#ifdef _NL_CURRENT
cpy (STRLEN (f_month), f_month);
break;
#else
!= '\0')))
subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# else
- subfmt = L_("%a %b %e %H:%M:%S %Y");
-# endif
#endif
subformat:
{
- CHAR_T *old_start = p;
- size_t len = my_strftime (NULL, (size_t) -1, subfmt,
- tp extra_args LOCALE_ARG);
- add (len, my_strftime (p, maxsize - i, subfmt,
- tp extra_args LOCALE_ARG));
-
- if (to_uppcase)
- while (old_start < p)
- {
- *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
- ++old_start;
- }
+ 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 HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
+#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[4];
+ char ufmt[5];
char *u = ufmt;
char ubuf[1024]; /* enough for any single format in practice */
size_t len;
size_t strftime ();
# endif
+ /* 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 && ubuf[0] != '\0')
- return 0;
- cpy (len, ubuf);
+ if (len != 0)
+ cpy (len - 1, ubuf + 1);
}
break;
#endif
break;
}
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# endif
#endif
}
{
- int year = tp->tm_year + TM_YEAR_BASE;
- DO_NUMBER (1, year / 100 - (year % 100 < 0));
+ 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 L_('x'):
subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
goto subformat;
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# else
- /* Fall through. */
-# endif
#endif
case L_('D'):
if (modifier != 0)
DO_NUMBER_SPACEPAD (2, tp->tm_mday);
- /* All numeric formats set DIGITS and NUMBER_VALUE and then
- jump to one of these two labels. */
+ /* 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. */
pad = L_('_');
do_number:
- /* Format the number according to the MODIFIER flag. */
-
- if (modifier == L_('O') && 0 <= number_value)
+ /* 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 NUMBER_VALUE. If none exist NULL is returned. */
- const CHAR_T *cp = nl_get_alt_digit (number_value
+ 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)
}
}
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# endif
#endif
}
- {
- unsigned int u = number_value;
- bufp = buf + sizeof (buf) / sizeof (buf[0]);
- negative_number = number_value < 0;
+ bufp = buf + sizeof (buf) / sizeof (buf[0]);
- if (negative_number)
- u = -u;
+ if (negative_number)
+ u_number_value = - u_number_value;
- do
- *--bufp = u % 10 + L_('0');
- while ((u /= 10) != 0);
- }
+ 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 (negative_number)
- *--bufp = L_('-');
+ if (digits < width)
+ digits = width;
+
+ sign_char = (negative_number ? L_('-')
+ : always_output_a_sign ? L_('+')
+ : 0);
- if (pad != L_('-'))
+ if (pad == L_('-'))
+ {
+ if (sign_char)
+ add1 (sign_char);
+ }
+ else
{
int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
- - bufp);
+ - bufp) - !!sign_char;
if (padding > 0)
{
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 (negative_number)
- {
- ++bufp;
-
- if (p)
- *p++ = L_('-');
- ++i;
- }
+ if (sign_char)
+ add1 (sign_char);
if (p)
memset_zero (p, padding);
width = 0;
}
}
+ else
+ {
+ if (sign_char)
+ add1 (sign_char);
+ }
}
cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
if (modifier == L_('E'))
goto bad_format;
- DO_NUMBER (3, 1 + tp->tm_yday);
+ DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U);
case L_('M'):
if (modifier == L_('E'))
if (modifier == L_('E'))
goto bad_format;
- DO_NUMBER (2, tp->tm_mon + 1);
+ DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U);
#ifndef _LIBC
case L_('N'): /* GNU extension. */
goto bad_format;
number_value = ns;
- if (width != -1)
+ if (width == -1)
+ width = 9;
+ else
{
/* Take an explicit width less than 9 as a precision. */
int j;
number_value /= 10;
}
- DO_NUMBER (9, number_value);
+ DO_NUMBER (width, number_value);
#endif
case L_('n'):
- add (1, *p = L_('\n'));
+ add1 (L_('\n'));
break;
case L_('P'):
- to_lowcase = 1;
-#if !defined _NL_CURRENT && HAVE_STRFTIME
+ to_lowcase = true;
+#ifndef _NL_CURRENT
format_char = L_('p');
#endif
/* FALLTHROUGH */
case L_('p'):
if (change_case)
{
- to_uppcase = 0;
- to_lowcase = 1;
+ to_uppcase = false;
+ to_lowcase = true;
}
-#if defined _NL_CURRENT || !HAVE_STRFTIME
+#ifdef _NL_CURRENT
cpy (ap_len, ampm);
break;
#else
goto subformat;
case L_('r'):
-#if !defined _NL_CURRENT && HAVE_STRFTIME
- goto underlying_strftime;
-#else
-# ifdef _NL_CURRENT
+#ifdef _NL_CURRENT
if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
NLW(T_FMT_AMPM)))
== L_('\0'))
-# endif
subfmt = L_("%I:%M:%S %p");
goto subformat;
+#else
+ goto underlying_strftime;
#endif
case L_('S'):
{
int d = t % 10;
t /= 10;
-
- if (negative_number)
- {
- d = -d;
-
- /* Adjust if division truncates to minus infinity. */
- if (0 < -1 % 10 && d < 0)
- {
- t++;
- d += 10;
- }
- }
-
- *--bufp = d + L_('0');
+ *--bufp = (negative_number ? -d : d) + L_('0');
}
while (t != 0);
digits = 1;
+ always_output_a_sign = false;
goto do_number_sign_and_padding;
}
subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
goto subformat;
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# else
- /* Fall through. */
-# endif
#endif
case L_('T'):
subfmt = L_("%H:%M:%S");
goto subformat;
case L_('t'):
- add (1, *p = L_('\t'));
+ add1 (L_('\t'));
break;
case L_('u'):
if (modifier == L_('E'))
goto bad_format;
{
- int year = tp->tm_year + TM_YEAR_BASE;
+ /* 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--;
- days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
+ year_adjust = -1;
+ days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)),
tp->tm_wday);
}
else
if (0 <= d)
{
/* This ISO week belongs to the next year. */
- year++;
+ year_adjust = 1;
days = d;
}
}
switch (*f)
{
case L_('g'):
- DO_NUMBER (2, (year % 100 + 100) % 100);
+ {
+ 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_NUMBER (1, year);
+ 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);
goto subformat;
}
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# endif
#endif
}
if (modifier == L_('O'))
goto bad_format;
else
- DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
+ 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'))
+ delta * era->absolute_direction));
}
#else
-# if HAVE_STRFTIME
goto underlying_strftime;
-# endif
#endif
}
- DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
+
+ {
+ 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 = 0;
- to_lowcase = 1;
+ 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];
+ zone = tzname[tp->tm_isdst != 0];
#endif
if (! 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;
#else
}
#endif
- if (diff < 0)
+ hour_diff = diff / 60 / 60;
+ min_diff = diff / 60 % 60;
+ sec_diff = diff % 60;
+
+ switch (colons)
{
- add (1, *p = L_('-'));
- diff = -diff;
- }
- else
- add (1, *p = L_('+'));
+ 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);
- diff /= 60;
- DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
+ 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. */
}
}
+#if ! FPRINTFTIME
if (p && maxsize != 0)
*p = L_('\0');
+#endif
+
return i;
}
-#ifdef _LIBC
+
+/* 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
-#ifdef emacs
+#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
projects / gnulib.git / blobdiff