| 1 | /* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 2 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | NOTE: The canonical source of this file is maintained with gnulib. |
| 6 | Bugs can be reported to bug-gnulib@gnu.org. |
| 7 | |
| 8 | This file is part of the GNU Emacs. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or |
| 11 | modify it under the terms of the GNU General Public License |
| 12 | as published by the Free Software Foundation; either version 2, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public |
| 21 | License along with the GNU C Library; see the file COPYING. If not, |
| 22 | write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 23 | Boston, MA 02110-1301, USA. */ |
| 24 | |
| 25 | #ifdef HAVE_CONFIG_H |
| 26 | # include <config.h> |
| 27 | #endif |
| 28 | |
| 29 | #ifdef _LIBC |
| 30 | # define HAVE_LIMITS_H 1 |
| 31 | # define HAVE_MBLEN 1 |
| 32 | # define HAVE_MBRLEN 1 |
| 33 | # define HAVE_STRUCT_ERA_ENTRY 1 |
| 34 | # define HAVE_TM_GMTOFF 1 |
| 35 | # define HAVE_TM_ZONE 1 |
| 36 | # define HAVE_TZNAME 1 |
| 37 | # define HAVE_TZSET 1 |
| 38 | # define MULTIBYTE_IS_FORMAT_SAFE 1 |
| 39 | # define STDC_HEADERS 1 |
| 40 | # include "../locale/localeinfo.h" |
| 41 | #endif |
| 42 | |
| 43 | #include <ctype.h> |
| 44 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
| 45 | |
| 46 | #ifdef TIME_WITH_SYS_TIME |
| 47 | # include <sys/time.h> |
| 48 | # include <time.h> |
| 49 | #else |
| 50 | # ifdef HAVE_SYS_TIME_H |
| 51 | # include <sys/time.h> |
| 52 | # else |
| 53 | # include <time.h> |
| 54 | # endif |
| 55 | #endif |
| 56 | #if HAVE_TZNAME |
| 57 | #ifndef USE_CRT_DLL |
| 58 | extern char *tzname[]; |
| 59 | #endif |
| 60 | #endif |
| 61 | |
| 62 | /* Do multibyte processing if multibytes are supported, unless |
| 63 | multibyte sequences are safe in formats. Multibyte sequences are |
| 64 | safe if they cannot contain byte sequences that look like format |
| 65 | conversion specifications. The GNU C Library uses UTF8 multibyte |
| 66 | encoding, which is safe for formats, but strftime.c can be used |
| 67 | with other C libraries that use unsafe encodings. */ |
| 68 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) |
| 69 | |
| 70 | #if DO_MULTIBYTE |
| 71 | # if HAVE_MBRLEN |
| 72 | # include <wchar.h> |
| 73 | # ifdef HAVE_SYS__MBSTATE_T_H /* previously tested __hpux */ |
| 74 | # include <sys/_mbstate_t.h> |
| 75 | # endif |
| 76 | # if !defined (mbsinit) && !defined (HAVE_MBSINIT) |
| 77 | # define mbsinit(ps) 1 |
| 78 | # endif /* !defined (mbsinit) && !defined (HAVE_MBSINIT) */ |
| 79 | # else |
| 80 | /* Simulate mbrlen with mblen as best we can. */ |
| 81 | # define mbstate_t int |
| 82 | # define mbrlen(s, n, ps) mblen (s, n) |
| 83 | # define mbsinit(ps) (*(ps) == 0) |
| 84 | # endif |
| 85 | static const mbstate_t mbstate_zero; |
| 86 | #endif |
| 87 | |
| 88 | #ifdef HAVE_LIMITS_H |
| 89 | # include <limits.h> |
| 90 | #endif |
| 91 | |
| 92 | #ifdef STDC_HEADERS |
| 93 | # include <stddef.h> |
| 94 | # include <stdlib.h> |
| 95 | # include <string.h> |
| 96 | #else |
| 97 | # ifndef HAVE_MEMCPY |
| 98 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) |
| 99 | # endif |
| 100 | #endif |
| 101 | |
| 102 | #ifdef COMPILE_WIDE |
| 103 | # include <endian.h> |
| 104 | # define CHAR_T wchar_t |
| 105 | # define UCHAR_T unsigned int |
| 106 | # define L_(Str) L##Str |
| 107 | # define NLW(Sym) _NL_W##Sym |
| 108 | |
| 109 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) |
| 110 | # define STRLEN(s) __wcslen (s) |
| 111 | |
| 112 | #else |
| 113 | # define CHAR_T char |
| 114 | # define UCHAR_T unsigned char |
| 115 | # define L_(Str) Str |
| 116 | # define NLW(Sym) Sym |
| 117 | |
| 118 | # if !defined STDC_HEADERS && !defined HAVE_MEMCPY |
| 119 | # define MEMCPY(d, s, n) bcopy ((s), (d), (n)) |
| 120 | # else |
| 121 | # define MEMCPY(d, s, n) memcpy ((d), (s), (n)) |
| 122 | # endif |
| 123 | # define STRLEN(s) strlen (s) |
| 124 | |
| 125 | # ifdef _LIBC |
| 126 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) |
| 127 | # else |
| 128 | # ifndef HAVE_MEMPCPY |
| 129 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) |
| 130 | # endif |
| 131 | # endif |
| 132 | #endif |
| 133 | |
| 134 | #ifndef __P |
| 135 | # if defined __GNUC__ || (defined __STDC__ && __STDC__) || defined (PROTOTYPES) |
| 136 | # define __P(args) args |
| 137 | # else |
| 138 | # define __P(args) () |
| 139 | # endif /* GCC. */ |
| 140 | #endif /* Not __P. */ |
| 141 | |
| 142 | #ifndef PTR |
| 143 | # ifdef __STDC__ |
| 144 | # define PTR void * |
| 145 | # else |
| 146 | # define PTR char * |
| 147 | # endif |
| 148 | #endif |
| 149 | |
| 150 | #ifndef CHAR_BIT |
| 151 | # define CHAR_BIT 8 |
| 152 | #endif |
| 153 | |
| 154 | #ifndef NULL |
| 155 | # define NULL 0 |
| 156 | #endif |
| 157 | |
| 158 | #define TYPE_SIGNED(t) ((t) -1 < 0) |
| 159 | |
| 160 | /* Bound on length of the string representing an integer value of type t. |
| 161 | Subtract one for the sign bit if t is signed; |
| 162 | 302 / 1000 is log10 (2) rounded up; |
| 163 | add one for integer division truncation; |
| 164 | add one more for a minus sign if t is signed. */ |
| 165 | #define INT_STRLEN_BOUND(t) \ |
| 166 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) |
| 167 | |
| 168 | #define TM_YEAR_BASE 1900 |
| 169 | |
| 170 | #ifndef __isleap |
| 171 | /* Nonzero if YEAR is a leap year (every 4 years, |
| 172 | except every 100th isn't, and every 400th is). */ |
| 173 | # define __isleap(year) \ |
| 174 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
| 175 | #endif |
| 176 | |
| 177 | |
| 178 | #ifdef _LIBC |
| 179 | # define my_strftime_gmtime_r __gmtime_r |
| 180 | # define my_strftime_localtime_r __localtime_r |
| 181 | # define tzname __tzname |
| 182 | # define tzset __tzset |
| 183 | #else |
| 184 | |
| 185 | /* If we're a strftime substitute in a GNU program, then prefer gmtime |
| 186 | to gmtime_r, since many gmtime_r implementations are buggy. |
| 187 | Similarly for localtime_r. */ |
| 188 | |
| 189 | # if ! HAVE_TM_GMTOFF |
| 190 | static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *)); |
| 191 | static struct tm * |
| 192 | my_strftime_gmtime_r (t, tp) |
| 193 | const time_t *t; |
| 194 | struct tm *tp; |
| 195 | { |
| 196 | struct tm *l = gmtime (t); |
| 197 | if (! l) |
| 198 | return 0; |
| 199 | *tp = *l; |
| 200 | return tp; |
| 201 | } |
| 202 | |
| 203 | static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *)); |
| 204 | static struct tm * |
| 205 | my_strftime_localtime_r (t, tp) |
| 206 | const time_t *t; |
| 207 | struct tm *tp; |
| 208 | { |
| 209 | struct tm *l = localtime (t); |
| 210 | if (! l) |
| 211 | return 0; |
| 212 | *tp = *l; |
| 213 | return tp; |
| 214 | } |
| 215 | # endif /* ! HAVE_TM_GMTOFF */ |
| 216 | #endif /* ! defined _LIBC */ |
| 217 | |
| 218 | |
| 219 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC |
| 220 | /* Some systems lack the `memset' function and we don't want to |
| 221 | introduce additional dependencies. */ |
| 222 | /* The SGI compiler reportedly barfs on the trailing null |
| 223 | if we use a string constant as the initializer. 28 June 1997, rms. */ |
| 224 | static const CHAR_T spaces[16] = /* " " */ |
| 225 | { |
| 226 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '), |
| 227 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ') |
| 228 | }; |
| 229 | static const CHAR_T zeroes[16] = /* "0000000000000000" */ |
| 230 | { |
| 231 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'), |
| 232 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0') |
| 233 | }; |
| 234 | |
| 235 | # define memset_space(P, Len) \ |
| 236 | do { \ |
| 237 | int _len = (Len); \ |
| 238 | \ |
| 239 | do \ |
| 240 | { \ |
| 241 | int _this = _len > 16 ? 16 : _len; \ |
| 242 | (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \ |
| 243 | _len -= _this; \ |
| 244 | } \ |
| 245 | while (_len > 0); \ |
| 246 | } while (0) |
| 247 | |
| 248 | # define memset_zero(P, Len) \ |
| 249 | do { \ |
| 250 | int _len = (Len); \ |
| 251 | \ |
| 252 | do \ |
| 253 | { \ |
| 254 | int _this = _len > 16 ? 16 : _len; \ |
| 255 | (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \ |
| 256 | _len -= _this; \ |
| 257 | } \ |
| 258 | while (_len > 0); \ |
| 259 | } while (0) |
| 260 | #else |
| 261 | # ifdef COMPILE_WIDE |
| 262 | # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len)) |
| 263 | # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len)) |
| 264 | # else |
| 265 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) |
| 266 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) |
| 267 | # endif |
| 268 | #endif |
| 269 | |
| 270 | #define add(n, f) \ |
| 271 | do \ |
| 272 | { \ |
| 273 | int _n = (n); \ |
| 274 | int _delta = width - _n; \ |
| 275 | int _incr = _n + (_delta > 0 ? _delta : 0); \ |
| 276 | if ((size_t) _incr >= maxsize - i) \ |
| 277 | return 0; \ |
| 278 | if (p) \ |
| 279 | { \ |
| 280 | if (_delta > 0) \ |
| 281 | { \ |
| 282 | if (pad == L_('0')) \ |
| 283 | memset_zero (p, _delta); \ |
| 284 | else \ |
| 285 | memset_space (p, _delta); \ |
| 286 | } \ |
| 287 | f; \ |
| 288 | p += _n; \ |
| 289 | } \ |
| 290 | i += _incr; \ |
| 291 | } while (0) |
| 292 | |
| 293 | #define cpy(n, s) \ |
| 294 | add ((n), \ |
| 295 | if (to_lowcase) \ |
| 296 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ |
| 297 | else if (to_uppcase) \ |
| 298 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ |
| 299 | else \ |
| 300 | MEMCPY ((PTR) p, (const PTR) (s), _n)) |
| 301 | |
| 302 | #ifdef COMPILE_WIDE |
| 303 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL |
| 304 | # undef __mbsrtowcs_l |
| 305 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) |
| 306 | # endif |
| 307 | # define widen(os, ws, l) \ |
| 308 | { \ |
| 309 | mbstate_t __st; \ |
| 310 | const char *__s = os; \ |
| 311 | memset (&__st, '\0', sizeof (__st)); \ |
| 312 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ |
| 313 | ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \ |
| 314 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ |
| 315 | } |
| 316 | #endif |
| 317 | |
| 318 | |
| 319 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL |
| 320 | /* We use this code also for the extended locale handling where the |
| 321 | function gets as an additional argument the locale which has to be |
| 322 | used. To access the values we have to redefine the _NL_CURRENT |
| 323 | macro. */ |
| 324 | # define strftime __strftime_l |
| 325 | # define wcsftime __wcsftime_l |
| 326 | # undef _NL_CURRENT |
| 327 | # define _NL_CURRENT(category, item) \ |
| 328 | (current->values[_NL_ITEM_INDEX (item)].string) |
| 329 | # define LOCALE_PARAM , loc |
| 330 | # define LOCALE_ARG , loc |
| 331 | # define LOCALE_PARAM_DECL __locale_t loc; |
| 332 | # define LOCALE_PARAM_PROTO , __locale_t loc |
| 333 | # define HELPER_LOCALE_ARG , current |
| 334 | #else |
| 335 | # define LOCALE_PARAM |
| 336 | # define LOCALE_PARAM_PROTO |
| 337 | # define LOCALE_ARG |
| 338 | # define LOCALE_PARAM_DECL |
| 339 | # ifdef _LIBC |
| 340 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) |
| 341 | # else |
| 342 | # define HELPER_LOCALE_ARG |
| 343 | # endif |
| 344 | #endif |
| 345 | |
| 346 | #ifdef COMPILE_WIDE |
| 347 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL |
| 348 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) |
| 349 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) |
| 350 | # else |
| 351 | # define TOUPPER(Ch, L) towupper (Ch) |
| 352 | # define TOLOWER(Ch, L) towlower (Ch) |
| 353 | # endif |
| 354 | #else |
| 355 | # ifdef _LIBC |
| 356 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL |
| 357 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) |
| 358 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) |
| 359 | # else |
| 360 | # define TOUPPER(Ch, L) toupper (Ch) |
| 361 | # define TOLOWER(Ch, L) tolower (Ch) |
| 362 | # endif |
| 363 | # else |
| 364 | # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch)) |
| 365 | # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch)) |
| 366 | # endif |
| 367 | #endif |
| 368 | /* We don't use `isdigit' here since the locale dependent |
| 369 | interpretation is not what we want here. We only need to accept |
| 370 | the arabic digits in the ASCII range. One day there is perhaps a |
| 371 | more reliable way to accept other sets of digits. */ |
| 372 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) |
| 373 | |
| 374 | static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src, |
| 375 | size_t len LOCALE_PARAM_PROTO)); |
| 376 | |
| 377 | static CHAR_T * |
| 378 | memcpy_lowcase (dest, src, len LOCALE_PARAM) |
| 379 | CHAR_T *dest; |
| 380 | const CHAR_T *src; |
| 381 | size_t len; |
| 382 | LOCALE_PARAM_DECL |
| 383 | { |
| 384 | while (len-- > 0) |
| 385 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); |
| 386 | return dest; |
| 387 | } |
| 388 | |
| 389 | static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src, |
| 390 | size_t len LOCALE_PARAM_PROTO)); |
| 391 | |
| 392 | static CHAR_T * |
| 393 | memcpy_uppcase (dest, src, len LOCALE_PARAM) |
| 394 | CHAR_T *dest; |
| 395 | const CHAR_T *src; |
| 396 | size_t len; |
| 397 | LOCALE_PARAM_DECL |
| 398 | { |
| 399 | while (len-- > 0) |
| 400 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); |
| 401 | return dest; |
| 402 | } |
| 403 | |
| 404 | |
| 405 | #if ! HAVE_TM_GMTOFF |
| 406 | /* Yield the difference between *A and *B, |
| 407 | measured in seconds, ignoring leap seconds. */ |
| 408 | # define tm_diff ftime_tm_diff |
| 409 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
| 410 | static int |
| 411 | tm_diff (a, b) |
| 412 | const struct tm *a; |
| 413 | const struct tm *b; |
| 414 | { |
| 415 | /* Compute intervening leap days correctly even if year is negative. |
| 416 | Take care to avoid int overflow in leap day calculations, |
| 417 | but it's OK to assume that A and B are close to each other. */ |
| 418 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); |
| 419 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); |
| 420 | int a100 = a4 / 25 - (a4 % 25 < 0); |
| 421 | int b100 = b4 / 25 - (b4 % 25 < 0); |
| 422 | int a400 = a100 >> 2; |
| 423 | int b400 = b100 >> 2; |
| 424 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
| 425 | int years = a->tm_year - b->tm_year; |
| 426 | int days = (365 * years + intervening_leap_days |
| 427 | + (a->tm_yday - b->tm_yday)); |
| 428 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
| 429 | + (a->tm_min - b->tm_min)) |
| 430 | + (a->tm_sec - b->tm_sec)); |
| 431 | } |
| 432 | #endif /* ! HAVE_TM_GMTOFF */ |
| 433 | |
| 434 | |
| 435 | |
| 436 | /* The number of days from the first day of the first ISO week of this |
| 437 | year to the year day YDAY with week day WDAY. ISO weeks start on |
| 438 | Monday; the first ISO week has the year's first Thursday. YDAY may |
| 439 | be as small as YDAY_MINIMUM. */ |
| 440 | #define ISO_WEEK_START_WDAY 1 /* Monday */ |
| 441 | #define ISO_WEEK1_WDAY 4 /* Thursday */ |
| 442 | #define YDAY_MINIMUM (-366) |
| 443 | static int iso_week_days __P ((int, int)); |
| 444 | #ifdef __GNUC__ |
| 445 | __inline__ |
| 446 | #endif |
| 447 | static int |
| 448 | iso_week_days (yday, wday) |
| 449 | int yday; |
| 450 | int wday; |
| 451 | { |
| 452 | /* Add enough to the first operand of % to make it nonnegative. */ |
| 453 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; |
| 454 | return (yday |
| 455 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
| 456 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); |
| 457 | } |
| 458 | |
| 459 | |
| 460 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) |
| 461 | static CHAR_T const weekday_name[][10] = |
| 462 | { |
| 463 | L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"), |
| 464 | L_("Thursday"), L_("Friday"), L_("Saturday") |
| 465 | }; |
| 466 | static CHAR_T const month_name[][10] = |
| 467 | { |
| 468 | L_("January"), L_("February"), L_("March"), L_("April"), L_("May"), |
| 469 | L_("June"), L_("July"), L_("August"), L_("September"), L_("October"), |
| 470 | L_("November"), L_("December") |
| 471 | }; |
| 472 | #endif |
| 473 | |
| 474 | |
| 475 | /* When compiling this file, GNU applications can #define my_strftime |
| 476 | to a symbol (typically nstrftime) to get an extended strftime with |
| 477 | extra arguments UT and NS. */ |
| 478 | |
| 479 | #ifdef my_strftime |
| 480 | # define extra_args , ut, ns |
| 481 | # define extra_args_spec int ut; int ns; |
| 482 | # define extra_args_spec_iso , int ut, int ns |
| 483 | #else |
| 484 | # ifdef COMPILE_WIDE |
| 485 | # define my_strftime wcsftime |
| 486 | # define nl_get_alt_digit _nl_get_walt_digit |
| 487 | # else |
| 488 | # define my_strftime strftime |
| 489 | # define nl_get_alt_digit _nl_get_alt_digit |
| 490 | # endif |
| 491 | # define extra_args |
| 492 | # define extra_args_spec |
| 493 | # define extra_args_spec_iso |
| 494 | /* We don't have this information in general. */ |
| 495 | # define ut 0 |
| 496 | # define ns 0 |
| 497 | #endif |
| 498 | |
| 499 | #if !defined _LIBC && !defined(WINDOWSNT) && HAVE_TZNAME && HAVE_TZSET |
| 500 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. |
| 501 | Work around this bug by copying *tp before it might be munged. */ |
| 502 | size_t _strftime_copytm __P ((char *, size_t, const char *, |
| 503 | const struct tm * extra_args_spec_iso)); |
| 504 | size_t |
| 505 | my_strftime (s, maxsize, format, tp extra_args) |
| 506 | CHAR_T *s; |
| 507 | size_t maxsize; |
| 508 | const CHAR_T *format; |
| 509 | const struct tm *tp; |
| 510 | extra_args_spec |
| 511 | { |
| 512 | struct tm tmcopy; |
| 513 | tmcopy = *tp; |
| 514 | return _strftime_copytm (s, maxsize, format, &tmcopy extra_args); |
| 515 | } |
| 516 | # undef my_strftime |
| 517 | # define my_strftime _strftime_copytm |
| 518 | #endif |
| 519 | |
| 520 | |
| 521 | /* Write information from TP into S according to the format |
| 522 | string FORMAT, writing no more that MAXSIZE characters |
| 523 | (including the terminating '\0') and returning number of |
| 524 | characters written. If S is NULL, nothing will be written |
| 525 | anywhere, so to determine how many characters would be |
| 526 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ |
| 527 | size_t |
| 528 | my_strftime (s, maxsize, format, tp extra_args LOCALE_PARAM) |
| 529 | CHAR_T *s; |
| 530 | size_t maxsize; |
| 531 | const CHAR_T *format; |
| 532 | const struct tm *tp; |
| 533 | extra_args_spec |
| 534 | LOCALE_PARAM_DECL |
| 535 | { |
| 536 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL |
| 537 | struct locale_data *const current = loc->__locales[LC_TIME]; |
| 538 | #endif |
| 539 | |
| 540 | int hour12 = tp->tm_hour; |
| 541 | #ifdef _NL_CURRENT |
| 542 | /* We cannot make the following values variables since we must delay |
| 543 | the evaluation of these values until really needed since some |
| 544 | expressions might not be valid in every situation. The `struct tm' |
| 545 | might be generated by a strptime() call that initialized |
| 546 | only a few elements. Dereference the pointers only if the format |
| 547 | requires this. Then it is ok to fail if the pointers are invalid. */ |
| 548 | # define a_wkday \ |
| 549 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) |
| 550 | # define f_wkday \ |
| 551 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) |
| 552 | # define a_month \ |
| 553 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) |
| 554 | # define f_month \ |
| 555 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) |
| 556 | # define ampm \ |
| 557 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ |
| 558 | ? NLW(PM_STR) : NLW(AM_STR))) |
| 559 | |
| 560 | # define aw_len STRLEN (a_wkday) |
| 561 | # define am_len STRLEN (a_month) |
| 562 | # define ap_len STRLEN (ampm) |
| 563 | #else |
| 564 | # if !HAVE_STRFTIME |
| 565 | # define f_wkday (weekday_name[tp->tm_wday]) |
| 566 | # define f_month (month_name[tp->tm_mon]) |
| 567 | # define a_wkday f_wkday |
| 568 | # define a_month f_month |
| 569 | # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11)) |
| 570 | |
| 571 | size_t aw_len = 3; |
| 572 | size_t am_len = 3; |
| 573 | size_t ap_len = 2; |
| 574 | # endif |
| 575 | #endif |
| 576 | const char *zone; |
| 577 | size_t i = 0; |
| 578 | CHAR_T *p = s; |
| 579 | const CHAR_T *f; |
| 580 | #if DO_MULTIBYTE && !defined COMPILE_WIDE |
| 581 | const char *format_end = NULL; |
| 582 | #endif |
| 583 | |
| 584 | zone = NULL; |
| 585 | #if HAVE_TM_ZONE |
| 586 | /* The POSIX test suite assumes that setting |
| 587 | the environment variable TZ to a new value before calling strftime() |
| 588 | will influence the result (the %Z format) even if the information in |
| 589 | TP is computed with a totally different time zone. |
| 590 | This is bogus: though POSIX allows bad behavior like this, |
| 591 | POSIX does not require it. Do the right thing instead. */ |
| 592 | zone = (const char *) tp->tm_zone; |
| 593 | #endif |
| 594 | #if HAVE_TZNAME |
| 595 | if (ut) |
| 596 | { |
| 597 | if (! (zone && *zone)) |
| 598 | zone = "GMT"; |
| 599 | } |
| 600 | else |
| 601 | { |
| 602 | /* POSIX.1 requires that local time zone information be used as |
| 603 | though strftime called tzset. */ |
| 604 | # if HAVE_TZSET |
| 605 | tzset (); |
| 606 | # endif |
| 607 | } |
| 608 | #endif |
| 609 | |
| 610 | if (hour12 > 12) |
| 611 | hour12 -= 12; |
| 612 | else |
| 613 | if (hour12 == 0) |
| 614 | hour12 = 12; |
| 615 | |
| 616 | for (f = format; *f != '\0'; ++f) |
| 617 | { |
| 618 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
| 619 | int modifier; /* Field modifier ('E', 'O', or 0). */ |
| 620 | int digits; /* Max digits for numeric format. */ |
| 621 | int number_value; /* Numeric value to be printed. */ |
| 622 | int negative_number; /* 1 if the number is negative. */ |
| 623 | const CHAR_T *subfmt; |
| 624 | CHAR_T *bufp; |
| 625 | CHAR_T buf[1 + (sizeof (int) < sizeof (time_t) |
| 626 | ? INT_STRLEN_BOUND (time_t) |
| 627 | : INT_STRLEN_BOUND (int))]; |
| 628 | int width = -1; |
| 629 | int to_lowcase = 0; |
| 630 | int to_uppcase = 0; |
| 631 | int change_case = 0; |
| 632 | int format_char; |
| 633 | |
| 634 | #if DO_MULTIBYTE && !defined COMPILE_WIDE |
| 635 | switch (*f) |
| 636 | { |
| 637 | case L_('%'): |
| 638 | break; |
| 639 | |
| 640 | case L_('\b'): case L_('\t'): case L_('\n'): |
| 641 | case L_('\v'): case L_('\f'): case L_('\r'): |
| 642 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): |
| 643 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): |
| 644 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): |
| 645 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): |
| 646 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): |
| 647 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): |
| 648 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): |
| 649 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): |
| 650 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): |
| 651 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): |
| 652 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): |
| 653 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): |
| 654 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): |
| 655 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): |
| 656 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): |
| 657 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): |
| 658 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): |
| 659 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): |
| 660 | case L_('~'): |
| 661 | /* The C Standard requires these 98 characters (plus '%') to |
| 662 | be in the basic execution character set. None of these |
| 663 | characters can start a multibyte sequence, so they need |
| 664 | not be analyzed further. */ |
| 665 | add (1, *p = *f); |
| 666 | continue; |
| 667 | |
| 668 | default: |
| 669 | /* Copy this multibyte sequence until we reach its end, find |
| 670 | an error, or come back to the initial shift state. */ |
| 671 | { |
| 672 | mbstate_t mbstate = mbstate_zero; |
| 673 | size_t len = 0; |
| 674 | size_t fsize; |
| 675 | |
| 676 | if (! format_end) |
| 677 | format_end = f + strlen (f) + 1; |
| 678 | fsize = format_end - f; |
| 679 | |
| 680 | do |
| 681 | { |
| 682 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); |
| 683 | |
| 684 | if (bytes == 0) |
| 685 | break; |
| 686 | |
| 687 | if (bytes == (size_t) -2) |
| 688 | { |
| 689 | len += strlen (f + len); |
| 690 | break; |
| 691 | } |
| 692 | |
| 693 | if (bytes == (size_t) -1) |
| 694 | { |
| 695 | len++; |
| 696 | break; |
| 697 | } |
| 698 | |
| 699 | len += bytes; |
| 700 | } |
| 701 | while (! mbsinit (&mbstate)); |
| 702 | |
| 703 | cpy (len, f); |
| 704 | f += len - 1; |
| 705 | continue; |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | #else /* ! DO_MULTIBYTE */ |
| 710 | |
| 711 | /* Either multibyte encodings are not supported, they are |
| 712 | safe for formats, so any non-'%' byte can be copied through, |
| 713 | or this is the wide character version. */ |
| 714 | if (*f != L_('%')) |
| 715 | { |
| 716 | add (1, *p = *f); |
| 717 | continue; |
| 718 | } |
| 719 | |
| 720 | #endif /* ! DO_MULTIBYTE */ |
| 721 | |
| 722 | /* Check for flags that can modify a format. */ |
| 723 | while (1) |
| 724 | { |
| 725 | switch (*++f) |
| 726 | { |
| 727 | /* This influences the number formats. */ |
| 728 | case L_('_'): |
| 729 | case L_('-'): |
| 730 | case L_('0'): |
| 731 | pad = *f; |
| 732 | continue; |
| 733 | |
| 734 | /* This changes textual output. */ |
| 735 | case L_('^'): |
| 736 | to_uppcase = 1; |
| 737 | continue; |
| 738 | case L_('#'): |
| 739 | change_case = 1; |
| 740 | continue; |
| 741 | |
| 742 | default: |
| 743 | break; |
| 744 | } |
| 745 | break; |
| 746 | } |
| 747 | |
| 748 | /* As a GNU extension we allow to specify the field width. */ |
| 749 | if (ISDIGIT (*f)) |
| 750 | { |
| 751 | width = 0; |
| 752 | do |
| 753 | { |
| 754 | if (width > INT_MAX / 10 |
| 755 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) |
| 756 | /* Avoid overflow. */ |
| 757 | width = INT_MAX; |
| 758 | else |
| 759 | { |
| 760 | width *= 10; |
| 761 | width += *f - L_('0'); |
| 762 | } |
| 763 | ++f; |
| 764 | } |
| 765 | while (ISDIGIT (*f)); |
| 766 | } |
| 767 | |
| 768 | /* Check for modifiers. */ |
| 769 | switch (*f) |
| 770 | { |
| 771 | case L_('E'): |
| 772 | case L_('O'): |
| 773 | modifier = *f++; |
| 774 | break; |
| 775 | |
| 776 | default: |
| 777 | modifier = 0; |
| 778 | break; |
| 779 | } |
| 780 | |
| 781 | /* Now do the specified format. */ |
| 782 | format_char = *f; |
| 783 | switch (format_char) |
| 784 | { |
| 785 | #define DO_NUMBER(d, v) \ |
| 786 | digits = d > width ? d : width; \ |
| 787 | number_value = v; goto do_number |
| 788 | #define DO_NUMBER_SPACEPAD(d, v) \ |
| 789 | digits = d > width ? d : width; \ |
| 790 | number_value = v; goto do_number_spacepad |
| 791 | |
| 792 | case L_('%'): |
| 793 | if (modifier != 0) |
| 794 | goto bad_format; |
| 795 | add (1, *p = *f); |
| 796 | break; |
| 797 | |
| 798 | case L_('a'): |
| 799 | if (modifier != 0) |
| 800 | goto bad_format; |
| 801 | if (change_case) |
| 802 | { |
| 803 | to_uppcase = 1; |
| 804 | to_lowcase = 0; |
| 805 | } |
| 806 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 807 | cpy (aw_len, a_wkday); |
| 808 | break; |
| 809 | #else |
| 810 | goto underlying_strftime; |
| 811 | #endif |
| 812 | |
| 813 | case 'A': |
| 814 | if (modifier != 0) |
| 815 | goto bad_format; |
| 816 | if (change_case) |
| 817 | { |
| 818 | to_uppcase = 1; |
| 819 | to_lowcase = 0; |
| 820 | } |
| 821 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 822 | cpy (STRLEN (f_wkday), f_wkday); |
| 823 | break; |
| 824 | #else |
| 825 | goto underlying_strftime; |
| 826 | #endif |
| 827 | |
| 828 | case L_('b'): |
| 829 | case L_('h'): |
| 830 | if (change_case) |
| 831 | { |
| 832 | to_uppcase = 1; |
| 833 | to_lowcase = 0; |
| 834 | } |
| 835 | if (modifier != 0) |
| 836 | goto bad_format; |
| 837 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 838 | cpy (am_len, a_month); |
| 839 | break; |
| 840 | #else |
| 841 | goto underlying_strftime; |
| 842 | #endif |
| 843 | |
| 844 | case L_('B'): |
| 845 | if (modifier != 0) |
| 846 | goto bad_format; |
| 847 | if (change_case) |
| 848 | { |
| 849 | to_uppcase = 1; |
| 850 | to_lowcase = 0; |
| 851 | } |
| 852 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 853 | cpy (STRLEN (f_month), f_month); |
| 854 | break; |
| 855 | #else |
| 856 | goto underlying_strftime; |
| 857 | #endif |
| 858 | |
| 859 | case L_('c'): |
| 860 | if (modifier == L_('O')) |
| 861 | goto bad_format; |
| 862 | #ifdef _NL_CURRENT |
| 863 | if (! (modifier == 'E' |
| 864 | && (*(subfmt = |
| 865 | (const CHAR_T *) _NL_CURRENT (LC_TIME, |
| 866 | NLW(ERA_D_T_FMT))) |
| 867 | != '\0'))) |
| 868 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); |
| 869 | #else |
| 870 | # if HAVE_STRFTIME |
| 871 | goto underlying_strftime; |
| 872 | # else |
| 873 | subfmt = L_("%a %b %e %H:%M:%S %Y"); |
| 874 | # endif |
| 875 | #endif |
| 876 | |
| 877 | subformat: |
| 878 | { |
| 879 | CHAR_T *old_start = p; |
| 880 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, |
| 881 | tp extra_args LOCALE_ARG); |
| 882 | add (len, my_strftime (p, maxsize - i, subfmt, |
| 883 | tp extra_args LOCALE_ARG)); |
| 884 | |
| 885 | if (to_uppcase) |
| 886 | while (old_start < p) |
| 887 | { |
| 888 | *old_start = TOUPPER ((UCHAR_T) *old_start, loc); |
| 889 | ++old_start; |
| 890 | } |
| 891 | } |
| 892 | break; |
| 893 | |
| 894 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) |
| 895 | underlying_strftime: |
| 896 | { |
| 897 | /* The relevant information is available only via the |
| 898 | underlying strftime implementation, so use that. */ |
| 899 | char ufmt[4]; |
| 900 | char *u = ufmt; |
| 901 | char ubuf[1024]; /* enough for any single format in practice */ |
| 902 | size_t len; |
| 903 | /* Make sure we're calling the actual underlying strftime. |
| 904 | In some cases, config.h contains something like |
| 905 | "#define strftime rpl_strftime". */ |
| 906 | # ifdef strftime |
| 907 | # undef strftime |
| 908 | size_t strftime (); |
| 909 | # endif |
| 910 | |
| 911 | #ifdef STRFTIME_NO_POSIX2 |
| 912 | /* Some system libraries do not support the POSIX.2 extensions. |
| 913 | In those cases, convert %h to %b, and strip modifiers. */ |
| 914 | modifier = 0; |
| 915 | if (format_char == 'h') |
| 916 | format_char = 'b'; |
| 917 | #endif |
| 918 | *u++ = '%'; |
| 919 | if (modifier != 0) |
| 920 | *u++ = modifier; |
| 921 | *u++ = format_char; |
| 922 | *u = '\0'; |
| 923 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); |
| 924 | if (len == 0 && ubuf[0] != '\0') |
| 925 | return 0; |
| 926 | cpy (len, ubuf); |
| 927 | } |
| 928 | break; |
| 929 | #endif |
| 930 | |
| 931 | case L_('C'): |
| 932 | if (modifier == L_('O')) |
| 933 | goto bad_format; |
| 934 | if (modifier == L_('E')) |
| 935 | { |
| 936 | #if HAVE_STRUCT_ERA_ENTRY |
| 937 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
| 938 | if (era) |
| 939 | { |
| 940 | # ifdef COMPILE_WIDE |
| 941 | size_t len = __wcslen (era->era_wname); |
| 942 | cpy (len, era->era_wname); |
| 943 | # else |
| 944 | size_t len = strlen (era->era_name); |
| 945 | cpy (len, era->era_name); |
| 946 | # endif |
| 947 | break; |
| 948 | } |
| 949 | #else |
| 950 | # if HAVE_STRFTIME |
| 951 | goto underlying_strftime; |
| 952 | # endif |
| 953 | #endif |
| 954 | } |
| 955 | |
| 956 | { |
| 957 | int year = tp->tm_year + TM_YEAR_BASE; |
| 958 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); |
| 959 | } |
| 960 | |
| 961 | case L_('x'): |
| 962 | if (modifier == L_('O')) |
| 963 | goto bad_format; |
| 964 | #ifdef _NL_CURRENT |
| 965 | if (! (modifier == L_('E') |
| 966 | && (*(subfmt = |
| 967 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) |
| 968 | != L_('\0')))) |
| 969 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); |
| 970 | goto subformat; |
| 971 | #else |
| 972 | # if HAVE_STRFTIME |
| 973 | goto underlying_strftime; |
| 974 | # else |
| 975 | /* Fall through. */ |
| 976 | # endif |
| 977 | #endif |
| 978 | case L_('D'): |
| 979 | if (modifier != 0) |
| 980 | goto bad_format; |
| 981 | subfmt = L_("%m/%d/%y"); |
| 982 | goto subformat; |
| 983 | |
| 984 | case L_('d'): |
| 985 | if (modifier == L_('E')) |
| 986 | goto bad_format; |
| 987 | |
| 988 | DO_NUMBER (2, tp->tm_mday); |
| 989 | |
| 990 | case L_('e'): |
| 991 | if (modifier == L_('E')) |
| 992 | goto bad_format; |
| 993 | |
| 994 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
| 995 | |
| 996 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
| 997 | jump to one of these two labels. */ |
| 998 | |
| 999 | do_number_spacepad: |
| 1000 | /* Force `_' flag unless overridden by `0' or `-' flag. */ |
| 1001 | if (pad != L_('0') && pad != L_('-')) |
| 1002 | pad = L_('_'); |
| 1003 | |
| 1004 | do_number: |
| 1005 | /* Format the number according to the MODIFIER flag. */ |
| 1006 | |
| 1007 | if (modifier == L_('O') && 0 <= number_value) |
| 1008 | { |
| 1009 | #ifdef _NL_CURRENT |
| 1010 | /* Get the locale specific alternate representation of |
| 1011 | the number NUMBER_VALUE. If none exist NULL is returned. */ |
| 1012 | const CHAR_T *cp = nl_get_alt_digit (number_value |
| 1013 | HELPER_LOCALE_ARG); |
| 1014 | |
| 1015 | if (cp != NULL) |
| 1016 | { |
| 1017 | size_t digitlen = STRLEN (cp); |
| 1018 | if (digitlen != 0) |
| 1019 | { |
| 1020 | cpy (digitlen, cp); |
| 1021 | break; |
| 1022 | } |
| 1023 | } |
| 1024 | #else |
| 1025 | # if HAVE_STRFTIME |
| 1026 | goto underlying_strftime; |
| 1027 | # endif |
| 1028 | #endif |
| 1029 | } |
| 1030 | { |
| 1031 | unsigned int u = number_value; |
| 1032 | |
| 1033 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
| 1034 | negative_number = number_value < 0; |
| 1035 | |
| 1036 | if (negative_number) |
| 1037 | u = -u; |
| 1038 | |
| 1039 | do |
| 1040 | *--bufp = u % 10 + L_('0'); |
| 1041 | while ((u /= 10) != 0); |
| 1042 | } |
| 1043 | |
| 1044 | do_number_sign_and_padding: |
| 1045 | if (negative_number) |
| 1046 | *--bufp = L_('-'); |
| 1047 | |
| 1048 | if (pad != L_('-')) |
| 1049 | { |
| 1050 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) |
| 1051 | - bufp); |
| 1052 | |
| 1053 | if (padding > 0) |
| 1054 | { |
| 1055 | if (pad == L_('_')) |
| 1056 | { |
| 1057 | if ((size_t) padding >= maxsize - i) |
| 1058 | return 0; |
| 1059 | |
| 1060 | if (p) |
| 1061 | memset_space (p, padding); |
| 1062 | i += padding; |
| 1063 | width = width > padding ? width - padding : 0; |
| 1064 | } |
| 1065 | else |
| 1066 | { |
| 1067 | if ((size_t) digits >= maxsize - i) |
| 1068 | return 0; |
| 1069 | |
| 1070 | if (negative_number) |
| 1071 | { |
| 1072 | ++bufp; |
| 1073 | |
| 1074 | if (p) |
| 1075 | *p++ = L_('-'); |
| 1076 | ++i; |
| 1077 | } |
| 1078 | |
| 1079 | if (p) |
| 1080 | memset_zero (p, padding); |
| 1081 | i += padding; |
| 1082 | width = 0; |
| 1083 | } |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); |
| 1088 | break; |
| 1089 | |
| 1090 | case L_('F'): |
| 1091 | if (modifier != 0) |
| 1092 | goto bad_format; |
| 1093 | subfmt = L_("%Y-%m-%d"); |
| 1094 | goto subformat; |
| 1095 | |
| 1096 | case L_('H'): |
| 1097 | if (modifier == L_('E')) |
| 1098 | goto bad_format; |
| 1099 | |
| 1100 | DO_NUMBER (2, tp->tm_hour); |
| 1101 | |
| 1102 | case L_('I'): |
| 1103 | if (modifier == L_('E')) |
| 1104 | goto bad_format; |
| 1105 | |
| 1106 | DO_NUMBER (2, hour12); |
| 1107 | |
| 1108 | case L_('k'): /* GNU extension. */ |
| 1109 | if (modifier == L_('E')) |
| 1110 | goto bad_format; |
| 1111 | |
| 1112 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); |
| 1113 | |
| 1114 | case L_('l'): /* GNU extension. */ |
| 1115 | if (modifier == L_('E')) |
| 1116 | goto bad_format; |
| 1117 | |
| 1118 | DO_NUMBER_SPACEPAD (2, hour12); |
| 1119 | |
| 1120 | case L_('j'): |
| 1121 | if (modifier == L_('E')) |
| 1122 | goto bad_format; |
| 1123 | |
| 1124 | DO_NUMBER (3, 1 + tp->tm_yday); |
| 1125 | |
| 1126 | case L_('M'): |
| 1127 | if (modifier == L_('E')) |
| 1128 | goto bad_format; |
| 1129 | |
| 1130 | DO_NUMBER (2, tp->tm_min); |
| 1131 | |
| 1132 | case L_('m'): |
| 1133 | if (modifier == L_('E')) |
| 1134 | goto bad_format; |
| 1135 | |
| 1136 | DO_NUMBER (2, tp->tm_mon + 1); |
| 1137 | |
| 1138 | #ifndef _LIBC |
| 1139 | case L_('N'): /* GNU extension. */ |
| 1140 | if (modifier == L_('E')) |
| 1141 | goto bad_format; |
| 1142 | |
| 1143 | number_value = ns; |
| 1144 | if (width != -1) |
| 1145 | { |
| 1146 | /* Take an explicit width less than 9 as a precision. */ |
| 1147 | int j; |
| 1148 | for (j = width; j < 9; j++) |
| 1149 | number_value /= 10; |
| 1150 | } |
| 1151 | |
| 1152 | DO_NUMBER (9, number_value); |
| 1153 | #endif |
| 1154 | |
| 1155 | case L_('n'): |
| 1156 | add (1, *p = L_('\n')); |
| 1157 | break; |
| 1158 | |
| 1159 | case L_('P'): |
| 1160 | to_lowcase = 1; |
| 1161 | #if !defined _NL_CURRENT && HAVE_STRFTIME |
| 1162 | format_char = L_('p'); |
| 1163 | #endif |
| 1164 | /* FALLTHROUGH */ |
| 1165 | |
| 1166 | case L_('p'): |
| 1167 | if (change_case) |
| 1168 | { |
| 1169 | to_uppcase = 0; |
| 1170 | to_lowcase = 1; |
| 1171 | } |
| 1172 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 1173 | cpy (ap_len, ampm); |
| 1174 | break; |
| 1175 | #else |
| 1176 | goto underlying_strftime; |
| 1177 | #endif |
| 1178 | |
| 1179 | case L_('R'): |
| 1180 | subfmt = L_("%H:%M"); |
| 1181 | goto subformat; |
| 1182 | |
| 1183 | case L_('r'): |
| 1184 | #ifdef _NL_CURRENT |
| 1185 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, |
| 1186 | NLW(T_FMT_AMPM))) |
| 1187 | == L_('\0')) |
| 1188 | #endif |
| 1189 | subfmt = L_("%I:%M:%S %p"); |
| 1190 | goto subformat; |
| 1191 | |
| 1192 | case L_('S'): |
| 1193 | if (modifier == L_('E')) |
| 1194 | goto bad_format; |
| 1195 | |
| 1196 | DO_NUMBER (2, tp->tm_sec); |
| 1197 | |
| 1198 | case L_('s'): /* GNU extension. */ |
| 1199 | { |
| 1200 | struct tm ltm; |
| 1201 | time_t t; |
| 1202 | |
| 1203 | ltm = *tp; |
| 1204 | t = mktime (<m); |
| 1205 | |
| 1206 | /* Generate string value for T using time_t arithmetic; |
| 1207 | this works even if sizeof (long) < sizeof (time_t). */ |
| 1208 | |
| 1209 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
| 1210 | negative_number = t < 0; |
| 1211 | |
| 1212 | do |
| 1213 | { |
| 1214 | int d = t % 10; |
| 1215 | t /= 10; |
| 1216 | |
| 1217 | if (negative_number) |
| 1218 | { |
| 1219 | d = -d; |
| 1220 | |
| 1221 | /* Adjust if division truncates to minus infinity. */ |
| 1222 | if (0 < -1 % 10 && d < 0) |
| 1223 | { |
| 1224 | t++; |
| 1225 | d += 10; |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | *--bufp = d + L_('0'); |
| 1230 | } |
| 1231 | while (t != 0); |
| 1232 | |
| 1233 | digits = 1; |
| 1234 | goto do_number_sign_and_padding; |
| 1235 | } |
| 1236 | |
| 1237 | case L_('X'): |
| 1238 | if (modifier == L_('O')) |
| 1239 | goto bad_format; |
| 1240 | #ifdef _NL_CURRENT |
| 1241 | if (! (modifier == L_('E') |
| 1242 | && (*(subfmt = |
| 1243 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) |
| 1244 | != L_('\0')))) |
| 1245 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); |
| 1246 | goto subformat; |
| 1247 | #else |
| 1248 | # if HAVE_STRFTIME |
| 1249 | goto underlying_strftime; |
| 1250 | # else |
| 1251 | /* Fall through. */ |
| 1252 | # endif |
| 1253 | #endif |
| 1254 | case L_('T'): |
| 1255 | subfmt = L_("%H:%M:%S"); |
| 1256 | goto subformat; |
| 1257 | |
| 1258 | case L_('t'): |
| 1259 | add (1, *p = L_('\t')); |
| 1260 | break; |
| 1261 | |
| 1262 | case L_('u'): |
| 1263 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); |
| 1264 | |
| 1265 | case L_('U'): |
| 1266 | if (modifier == L_('E')) |
| 1267 | goto bad_format; |
| 1268 | |
| 1269 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); |
| 1270 | |
| 1271 | case L_('V'): |
| 1272 | case L_('g'): |
| 1273 | case L_('G'): |
| 1274 | if (modifier == L_('E')) |
| 1275 | goto bad_format; |
| 1276 | { |
| 1277 | int year = tp->tm_year + TM_YEAR_BASE; |
| 1278 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); |
| 1279 | |
| 1280 | if (days < 0) |
| 1281 | { |
| 1282 | /* This ISO week belongs to the previous year. */ |
| 1283 | year--; |
| 1284 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), |
| 1285 | tp->tm_wday); |
| 1286 | } |
| 1287 | else |
| 1288 | { |
| 1289 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), |
| 1290 | tp->tm_wday); |
| 1291 | if (0 <= d) |
| 1292 | { |
| 1293 | /* This ISO week belongs to the next year. */ |
| 1294 | year++; |
| 1295 | days = d; |
| 1296 | } |
| 1297 | } |
| 1298 | |
| 1299 | switch (*f) |
| 1300 | { |
| 1301 | case L_('g'): |
| 1302 | DO_NUMBER (2, (year % 100 + 100) % 100); |
| 1303 | |
| 1304 | case L_('G'): |
| 1305 | DO_NUMBER (1, year); |
| 1306 | |
| 1307 | default: |
| 1308 | DO_NUMBER (2, days / 7 + 1); |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | case L_('W'): |
| 1313 | if (modifier == L_('E')) |
| 1314 | goto bad_format; |
| 1315 | |
| 1316 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); |
| 1317 | |
| 1318 | case L_('w'): |
| 1319 | if (modifier == L_('E')) |
| 1320 | goto bad_format; |
| 1321 | |
| 1322 | DO_NUMBER (1, tp->tm_wday); |
| 1323 | |
| 1324 | case L_('Y'): |
| 1325 | if (modifier == 'E') |
| 1326 | { |
| 1327 | #if HAVE_STRUCT_ERA_ENTRY |
| 1328 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
| 1329 | if (era) |
| 1330 | { |
| 1331 | # ifdef COMPILE_WIDE |
| 1332 | subfmt = era->era_wformat; |
| 1333 | # else |
| 1334 | subfmt = era->era_format; |
| 1335 | # endif |
| 1336 | goto subformat; |
| 1337 | } |
| 1338 | #else |
| 1339 | # if HAVE_STRFTIME |
| 1340 | goto underlying_strftime; |
| 1341 | # endif |
| 1342 | #endif |
| 1343 | } |
| 1344 | if (modifier == L_('O')) |
| 1345 | goto bad_format; |
| 1346 | else |
| 1347 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); |
| 1348 | |
| 1349 | case L_('y'): |
| 1350 | if (modifier == L_('E')) |
| 1351 | { |
| 1352 | #if HAVE_STRUCT_ERA_ENTRY |
| 1353 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
| 1354 | if (era) |
| 1355 | { |
| 1356 | int delta = tp->tm_year - era->start_date[0]; |
| 1357 | DO_NUMBER (1, (era->offset |
| 1358 | + delta * era->absolute_direction)); |
| 1359 | } |
| 1360 | #else |
| 1361 | # if HAVE_STRFTIME |
| 1362 | goto underlying_strftime; |
| 1363 | # endif |
| 1364 | #endif |
| 1365 | } |
| 1366 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); |
| 1367 | |
| 1368 | case L_('Z'): |
| 1369 | if (change_case) |
| 1370 | { |
| 1371 | to_uppcase = 0; |
| 1372 | to_lowcase = 1; |
| 1373 | } |
| 1374 | |
| 1375 | #if HAVE_TZNAME |
| 1376 | /* The tzset() call might have changed the value. */ |
| 1377 | if (!(zone && *zone) && tp->tm_isdst >= 0) |
| 1378 | zone = tzname[tp->tm_isdst]; |
| 1379 | #endif |
| 1380 | if (! zone) |
| 1381 | zone = ""; |
| 1382 | |
| 1383 | #ifdef COMPILE_WIDE |
| 1384 | { |
| 1385 | /* The zone string is always given in multibyte form. We have |
| 1386 | to transform it first. */ |
| 1387 | wchar_t *wczone; |
| 1388 | size_t len; |
| 1389 | widen (zone, wczone, len); |
| 1390 | cpy (len, wczone); |
| 1391 | } |
| 1392 | #else |
| 1393 | cpy (strlen (zone), zone); |
| 1394 | #endif |
| 1395 | break; |
| 1396 | |
| 1397 | case L_('z'): |
| 1398 | if (tp->tm_isdst < 0) |
| 1399 | break; |
| 1400 | |
| 1401 | { |
| 1402 | int diff; |
| 1403 | #if HAVE_TM_GMTOFF |
| 1404 | diff = tp->tm_gmtoff; |
| 1405 | #else |
| 1406 | if (ut) |
| 1407 | diff = 0; |
| 1408 | else |
| 1409 | { |
| 1410 | struct tm gtm; |
| 1411 | struct tm ltm; |
| 1412 | time_t lt; |
| 1413 | |
| 1414 | ltm = *tp; |
| 1415 | lt = mktime (<m); |
| 1416 | |
| 1417 | if (lt == (time_t) -1) |
| 1418 | { |
| 1419 | /* mktime returns -1 for errors, but -1 is also a |
| 1420 | valid time_t value. Check whether an error really |
| 1421 | occurred. */ |
| 1422 | struct tm tm; |
| 1423 | |
| 1424 | if (! my_strftime_localtime_r (<, &tm) |
| 1425 | || ((ltm.tm_sec ^ tm.tm_sec) |
| 1426 | | (ltm.tm_min ^ tm.tm_min) |
| 1427 | | (ltm.tm_hour ^ tm.tm_hour) |
| 1428 | | (ltm.tm_mday ^ tm.tm_mday) |
| 1429 | | (ltm.tm_mon ^ tm.tm_mon) |
| 1430 | | (ltm.tm_year ^ tm.tm_year))) |
| 1431 | break; |
| 1432 | } |
| 1433 | |
| 1434 | if (! my_strftime_gmtime_r (<, >m)) |
| 1435 | break; |
| 1436 | |
| 1437 | diff = tm_diff (<m, >m); |
| 1438 | } |
| 1439 | #endif |
| 1440 | |
| 1441 | if (diff < 0) |
| 1442 | { |
| 1443 | add (1, *p = L_('-')); |
| 1444 | diff = -diff; |
| 1445 | } |
| 1446 | else |
| 1447 | add (1, *p = L_('+')); |
| 1448 | |
| 1449 | diff /= 60; |
| 1450 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); |
| 1451 | } |
| 1452 | |
| 1453 | case L_('\0'): /* GNU extension: % at end of format. */ |
| 1454 | --f; |
| 1455 | /* Fall through. */ |
| 1456 | default: |
| 1457 | /* Unknown format; output the format, including the '%', |
| 1458 | since this is most likely the right thing to do if a |
| 1459 | multibyte string has been misparsed. */ |
| 1460 | bad_format: |
| 1461 | { |
| 1462 | int flen; |
| 1463 | for (flen = 1; f[1 - flen] != L_('%'); flen++) |
| 1464 | continue; |
| 1465 | cpy (flen, &f[1 - flen]); |
| 1466 | } |
| 1467 | break; |
| 1468 | } |
| 1469 | } |
| 1470 | |
| 1471 | if (p && maxsize != 0) |
| 1472 | *p = L_('\0'); |
| 1473 | return i; |
| 1474 | } |
| 1475 | #ifdef _LIBC |
| 1476 | libc_hidden_def (my_strftime) |
| 1477 | #endif |
| 1478 | |
| 1479 | |
| 1480 | #ifdef emacs |
| 1481 | #undef ut |
| 1482 | /* For Emacs we have a separate interface which corresponds to the normal |
| 1483 | strftime function plus the ut argument, but without the ns argument. */ |
| 1484 | size_t |
| 1485 | emacs_strftimeu (s, maxsize, format, tp, ut) |
| 1486 | char *s; |
| 1487 | size_t maxsize; |
| 1488 | const char *format; |
| 1489 | const struct tm *tp; |
| 1490 | int ut; |
| 1491 | { |
| 1492 | return my_strftime (s, maxsize, format, tp, ut, 0); |
| 1493 | } |
| 1494 | #endif |
| 1495 | |
| 1496 | /* arch-tag: 662bc9c4-f8e2-41b6-bf96-b8346d0ce0d8 |
| 1497 | (do not change this comment) */ |