| 1 | /* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc. |
| 2 | NOTE: The canonical source of this file is maintained with the GNU C Library. |
| 3 | Bugs can be reported to bug-glibc@gnu.org. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify it |
| 6 | under the terms of the GNU General Public License as published by the |
| 7 | Free Software Foundation; either version 2, or (at your option) any |
| 8 | later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software Foundation, |
| 17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 18 | |
| 19 | #ifdef HAVE_CONFIG_H |
| 20 | # include <config.h> |
| 21 | #endif |
| 22 | |
| 23 | #ifdef _LIBC |
| 24 | # define HAVE_LIMITS_H 1 |
| 25 | # define HAVE_MBLEN 1 |
| 26 | # define HAVE_MBRLEN 1 |
| 27 | # define HAVE_STRUCT_ERA_ENTRY 1 |
| 28 | # define HAVE_TM_GMTOFF 1 |
| 29 | # define HAVE_TM_ZONE 1 |
| 30 | # define HAVE_TZNAME 1 |
| 31 | # define HAVE_TZSET 1 |
| 32 | # define MULTIBYTE_IS_FORMAT_SAFE 1 |
| 33 | # define STDC_HEADERS 1 |
| 34 | # include "../locale/localeinfo.h" |
| 35 | #endif |
| 36 | |
| 37 | #if defined emacs && !defined HAVE_BCOPY |
| 38 | # define HAVE_MEMCPY 1 |
| 39 | #endif |
| 40 | |
| 41 | #include <ctype.h> |
| 42 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
| 43 | |
| 44 | #ifdef TIME_WITH_SYS_TIME |
| 45 | # include <sys/time.h> |
| 46 | # include <time.h> |
| 47 | #else |
| 48 | # ifdef HAVE_SYS_TIME_H |
| 49 | # include <sys/time.h> |
| 50 | # else |
| 51 | # include <time.h> |
| 52 | # endif |
| 53 | #endif |
| 54 | #if HAVE_TZNAME |
| 55 | extern char *tzname[]; |
| 56 | #endif |
| 57 | |
| 58 | /* Do multibyte processing if multibytes are supported, unless |
| 59 | multibyte sequences are safe in formats. Multibyte sequences are |
| 60 | safe if they cannot contain byte sequences that look like format |
| 61 | conversion specifications. The GNU C Library uses UTF8 multibyte |
| 62 | encoding, which is safe for formats, but strftime.c can be used |
| 63 | with other C libraries that use unsafe encodings. */ |
| 64 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) |
| 65 | |
| 66 | #if DO_MULTIBYTE |
| 67 | # if HAVE_MBRLEN |
| 68 | # include <wchar.h> |
| 69 | # else |
| 70 | /* Simulate mbrlen with mblen as best we can. */ |
| 71 | # define mbstate_t int |
| 72 | # define mbrlen(s, n, ps) mblen (s, n) |
| 73 | # define mbsinit(ps) (*(ps) == 0) |
| 74 | # endif |
| 75 | static const mbstate_t mbstate_zero; |
| 76 | #endif |
| 77 | |
| 78 | #if HAVE_LIMITS_H |
| 79 | # include <limits.h> |
| 80 | #endif |
| 81 | |
| 82 | #if STDC_HEADERS |
| 83 | # include <stddef.h> |
| 84 | # include <stdlib.h> |
| 85 | # include <string.h> |
| 86 | #else |
| 87 | # ifndef HAVE_MEMCPY |
| 88 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) |
| 89 | # endif |
| 90 | #endif |
| 91 | |
| 92 | #ifdef _LIBC |
| 93 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) |
| 94 | #else |
| 95 | # ifndef HAVE_MEMPCPY |
| 96 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) |
| 97 | # endif |
| 98 | #endif |
| 99 | |
| 100 | #ifndef __P |
| 101 | # if defined (__GNUC__) || (defined (__STDC__) && __STDC__) |
| 102 | # define __P(args) args |
| 103 | # else |
| 104 | # define __P(args) () |
| 105 | # endif /* GCC. */ |
| 106 | #endif /* Not __P. */ |
| 107 | |
| 108 | #ifndef PTR |
| 109 | # ifdef __STDC__ |
| 110 | # define PTR void * |
| 111 | # else |
| 112 | # define PTR char * |
| 113 | # endif |
| 114 | #endif |
| 115 | |
| 116 | #ifndef CHAR_BIT |
| 117 | # define CHAR_BIT 8 |
| 118 | #endif |
| 119 | |
| 120 | #ifndef NULL |
| 121 | # define NULL 0 |
| 122 | #endif |
| 123 | |
| 124 | #define TYPE_SIGNED(t) ((t) -1 < 0) |
| 125 | |
| 126 | /* Bound on length of the string representing an integer value of type t. |
| 127 | Subtract one for the sign bit if t is signed; |
| 128 | 302 / 1000 is log10 (2) rounded up; |
| 129 | add one for integer division truncation; |
| 130 | add one more for a minus sign if t is signed. */ |
| 131 | #define INT_STRLEN_BOUND(t) \ |
| 132 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) |
| 133 | |
| 134 | #define TM_YEAR_BASE 1900 |
| 135 | |
| 136 | #ifndef __isleap |
| 137 | /* Nonzero if YEAR is a leap year (every 4 years, |
| 138 | except every 100th isn't, and every 400th is). */ |
| 139 | # define __isleap(year) \ |
| 140 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
| 141 | #endif |
| 142 | |
| 143 | |
| 144 | #ifdef _LIBC |
| 145 | # define my_strftime_gmtime_r __gmtime_r |
| 146 | # define my_strftime_localtime_r __localtime_r |
| 147 | # define tzname __tzname |
| 148 | # define tzset __tzset |
| 149 | #else |
| 150 | |
| 151 | /* If we're a strftime substitute in a GNU program, then prefer gmtime |
| 152 | to gmtime_r, since many gmtime_r implementations are buggy. |
| 153 | Similarly for localtime_r. */ |
| 154 | |
| 155 | # if ! HAVE_TM_GMTOFF |
| 156 | static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *)); |
| 157 | static struct tm * |
| 158 | my_strftime_gmtime_r (t, tp) |
| 159 | const time_t *t; |
| 160 | struct tm *tp; |
| 161 | { |
| 162 | struct tm *l = gmtime (t); |
| 163 | if (! l) |
| 164 | return 0; |
| 165 | *tp = *l; |
| 166 | return tp; |
| 167 | } |
| 168 | # endif /* ! HAVE_TM_GMTOFF */ |
| 169 | |
| 170 | static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *)); |
| 171 | static struct tm * |
| 172 | my_strftime_localtime_r (t, tp) |
| 173 | const time_t *t; |
| 174 | struct tm *tp; |
| 175 | { |
| 176 | struct tm *l = localtime (t); |
| 177 | if (! l) |
| 178 | return 0; |
| 179 | *tp = *l; |
| 180 | return tp; |
| 181 | } |
| 182 | #endif /* ! defined _LIBC */ |
| 183 | |
| 184 | |
| 185 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC |
| 186 | /* Some systems lack the `memset' function and we don't want to |
| 187 | introduce additional dependencies. */ |
| 188 | /* The SGI compiler reportedly barfs on the trailing null |
| 189 | if we use a string constant as the initializer. 28 June 1997, rms. */ |
| 190 | static const char spaces[16] = /* " " */ |
| 191 | { ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ' }; |
| 192 | static const char zeroes[16] = /* "0000000000000000" */ |
| 193 | { '0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0' }; |
| 194 | |
| 195 | # define memset_space(P, Len) \ |
| 196 | do { \ |
| 197 | int _len = (Len); \ |
| 198 | \ |
| 199 | do \ |
| 200 | { \ |
| 201 | int _this = _len > 16 ? 16 : _len; \ |
| 202 | (P) = MEMPCPY ((P), spaces, _this); \ |
| 203 | _len -= _this; \ |
| 204 | } \ |
| 205 | while (_len > 0); \ |
| 206 | } while (0) |
| 207 | |
| 208 | # define memset_zero(P, Len) \ |
| 209 | do { \ |
| 210 | int _len = (Len); \ |
| 211 | \ |
| 212 | do \ |
| 213 | { \ |
| 214 | int _this = _len > 16 ? 16 : _len; \ |
| 215 | (P) = MEMPCPY ((P), zeroes, _this); \ |
| 216 | _len -= _this; \ |
| 217 | } \ |
| 218 | while (_len > 0); \ |
| 219 | } while (0) |
| 220 | #else |
| 221 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) |
| 222 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) |
| 223 | #endif |
| 224 | |
| 225 | #define add(n, f) \ |
| 226 | do \ |
| 227 | { \ |
| 228 | int _n = (n); \ |
| 229 | int _delta = width - _n; \ |
| 230 | int _incr = _n + (_delta > 0 ? _delta : 0); \ |
| 231 | if (i + _incr >= maxsize) \ |
| 232 | return 0; \ |
| 233 | if (p) \ |
| 234 | { \ |
| 235 | if (_delta > 0) \ |
| 236 | { \ |
| 237 | if (pad == '0') \ |
| 238 | memset_zero (p, _delta); \ |
| 239 | else \ |
| 240 | memset_space (p, _delta); \ |
| 241 | } \ |
| 242 | f; \ |
| 243 | p += _n; \ |
| 244 | } \ |
| 245 | i += _incr; \ |
| 246 | } while (0) |
| 247 | |
| 248 | #define cpy(n, s) \ |
| 249 | add ((n), \ |
| 250 | if (to_lowcase) \ |
| 251 | memcpy_lowcase (p, (s), _n); \ |
| 252 | else if (to_uppcase) \ |
| 253 | memcpy_uppcase (p, (s), _n); \ |
| 254 | else \ |
| 255 | memcpy ((PTR) p, (PTR) (s), _n)) |
| 256 | |
| 257 | |
| 258 | |
| 259 | #ifdef _LIBC |
| 260 | # define TOUPPER(Ch) toupper (Ch) |
| 261 | # define TOLOWER(Ch) tolower (Ch) |
| 262 | #else |
| 263 | # define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch)) |
| 264 | # define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) |
| 265 | #endif |
| 266 | /* We don't use `isdigit' here since the locale dependent |
| 267 | interpretation is not what we want here. We only need to accept |
| 268 | the arabic digits in the ASCII range. One day there is perhaps a |
| 269 | more reliable way to accept other sets of digits. */ |
| 270 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - '0' <= 9) |
| 271 | |
| 272 | static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len)); |
| 273 | |
| 274 | static char * |
| 275 | memcpy_lowcase (dest, src, len) |
| 276 | char *dest; |
| 277 | const char *src; |
| 278 | size_t len; |
| 279 | { |
| 280 | while (len-- > 0) |
| 281 | dest[len] = TOLOWER ((unsigned char) src[len]); |
| 282 | return dest; |
| 283 | } |
| 284 | |
| 285 | static char *memcpy_uppcase __P ((char *dest, const char *src, size_t len)); |
| 286 | |
| 287 | static char * |
| 288 | memcpy_uppcase (dest, src, len) |
| 289 | char *dest; |
| 290 | const char *src; |
| 291 | size_t len; |
| 292 | { |
| 293 | while (len-- > 0) |
| 294 | dest[len] = TOUPPER ((unsigned char) src[len]); |
| 295 | return dest; |
| 296 | } |
| 297 | |
| 298 | |
| 299 | #if ! HAVE_TM_GMTOFF |
| 300 | /* Yield the difference between *A and *B, |
| 301 | measured in seconds, ignoring leap seconds. */ |
| 302 | # define tm_diff ftime_tm_diff |
| 303 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
| 304 | static int |
| 305 | tm_diff (a, b) |
| 306 | const struct tm *a; |
| 307 | const struct tm *b; |
| 308 | { |
| 309 | /* Compute intervening leap days correctly even if year is negative. |
| 310 | Take care to avoid int overflow in leap day calculations, |
| 311 | but it's OK to assume that A and B are close to each other. */ |
| 312 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); |
| 313 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); |
| 314 | int a100 = a4 / 25 - (a4 % 25 < 0); |
| 315 | int b100 = b4 / 25 - (b4 % 25 < 0); |
| 316 | int a400 = a100 >> 2; |
| 317 | int b400 = b100 >> 2; |
| 318 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
| 319 | int years = a->tm_year - b->tm_year; |
| 320 | int days = (365 * years + intervening_leap_days |
| 321 | + (a->tm_yday - b->tm_yday)); |
| 322 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
| 323 | + (a->tm_min - b->tm_min)) |
| 324 | + (a->tm_sec - b->tm_sec)); |
| 325 | } |
| 326 | #endif /* ! HAVE_TM_GMTOFF */ |
| 327 | |
| 328 | |
| 329 | |
| 330 | /* The number of days from the first day of the first ISO week of this |
| 331 | year to the year day YDAY with week day WDAY. ISO weeks start on |
| 332 | Monday; the first ISO week has the year's first Thursday. YDAY may |
| 333 | be as small as YDAY_MINIMUM. */ |
| 334 | #define ISO_WEEK_START_WDAY 1 /* Monday */ |
| 335 | #define ISO_WEEK1_WDAY 4 /* Thursday */ |
| 336 | #define YDAY_MINIMUM (-366) |
| 337 | static int iso_week_days __P ((int, int)); |
| 338 | #ifdef __GNUC__ |
| 339 | __inline__ |
| 340 | #endif |
| 341 | static int |
| 342 | iso_week_days (yday, wday) |
| 343 | int yday; |
| 344 | int wday; |
| 345 | { |
| 346 | /* Add enough to the first operand of % to make it nonnegative. */ |
| 347 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; |
| 348 | return (yday |
| 349 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
| 350 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); |
| 351 | } |
| 352 | |
| 353 | |
| 354 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) |
| 355 | static char const weekday_name[][10] = |
| 356 | { |
| 357 | "Sunday", "Monday", "Tuesday", "Wednesday", |
| 358 | "Thursday", "Friday", "Saturday" |
| 359 | }; |
| 360 | static char const month_name[][10] = |
| 361 | { |
| 362 | "January", "February", "March", "April", "May", "June", |
| 363 | "July", "August", "September", "October", "November", "December" |
| 364 | }; |
| 365 | #endif |
| 366 | |
| 367 | |
| 368 | #ifdef emacs |
| 369 | # define my_strftime emacs_strftimeu |
| 370 | # define ut_argument , ut |
| 371 | # define ut_argument_spec int ut; |
| 372 | # define ut_argument_spec_iso , int ut |
| 373 | #else |
| 374 | # define my_strftime strftime |
| 375 | # define ut_argument |
| 376 | # define ut_argument_spec |
| 377 | # define ut_argument_spec_iso |
| 378 | /* We don't have this information in general. */ |
| 379 | # define ut 0 |
| 380 | #endif |
| 381 | |
| 382 | #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET |
| 383 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. |
| 384 | Work around this bug by copying *tp before it might be munged. */ |
| 385 | size_t _strftime_copytm __P ((char *, size_t, const char *, |
| 386 | const struct tm * ut_argument_spec_iso)); |
| 387 | size_t |
| 388 | my_strftime (s, maxsize, format, tp ut_argument) |
| 389 | char *s; |
| 390 | size_t maxsize; |
| 391 | const char *format; |
| 392 | const struct tm *tp; |
| 393 | ut_argument_spec |
| 394 | { |
| 395 | struct tm tmcopy; |
| 396 | tmcopy = *tp; |
| 397 | return _strftime_copytm (s, maxsize, format, &tmcopy ut_argument); |
| 398 | } |
| 399 | # undef my_strftime |
| 400 | # define my_strftime _strftime_copytm |
| 401 | #endif |
| 402 | |
| 403 | |
| 404 | /* Write information from TP into S according to the format |
| 405 | string FORMAT, writing no more that MAXSIZE characters |
| 406 | (including the terminating '\0') and returning number of |
| 407 | characters written. If S is NULL, nothing will be written |
| 408 | anywhere, so to determine how many characters would be |
| 409 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ |
| 410 | size_t |
| 411 | my_strftime (s, maxsize, format, tp ut_argument) |
| 412 | char *s; |
| 413 | size_t maxsize; |
| 414 | const char *format; |
| 415 | const struct tm *tp; |
| 416 | ut_argument_spec |
| 417 | { |
| 418 | int hour12 = tp->tm_hour; |
| 419 | #ifdef _NL_CURRENT |
| 420 | /* We cannot make the following values variables since we must delay |
| 421 | the evaluation of these values until really needed since some |
| 422 | expressions might not be valid in every situation. The `struct tm' |
| 423 | might be generated by a strptime() call that initialized |
| 424 | only a few elements. Dereference the pointers only if the format |
| 425 | requires this. Then it is ok to fail if the pointers are invalid. */ |
| 426 | # define a_wkday _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday) |
| 427 | # define f_wkday _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday) |
| 428 | # define a_month _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon) |
| 429 | # define f_month _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon) |
| 430 | # define ampm _NL_CURRENT (LC_TIME, tp->tm_hour > 11 ? PM_STR : AM_STR) |
| 431 | |
| 432 | # define aw_len strlen (a_wkday) |
| 433 | # define am_len strlen (a_month) |
| 434 | # define ap_len strlen (ampm) |
| 435 | #else |
| 436 | # if !HAVE_STRFTIME |
| 437 | # define f_wkday (weekday_name[tp->tm_wday]) |
| 438 | # define f_month (month_name[tp->tm_mon]) |
| 439 | # define a_wkday f_wkday |
| 440 | # define a_month f_month |
| 441 | # define ampm ("AMPM" + 2 * (tp->tm_hour > 11)) |
| 442 | |
| 443 | size_t aw_len = 3; |
| 444 | size_t am_len = 3; |
| 445 | size_t ap_len = 2; |
| 446 | # endif |
| 447 | #endif |
| 448 | const char *zone; |
| 449 | size_t i = 0; |
| 450 | char *p = s; |
| 451 | const char *f; |
| 452 | |
| 453 | zone = NULL; |
| 454 | #if HAVE_TM_ZONE |
| 455 | /* The POSIX test suite assumes that setting |
| 456 | the environment variable TZ to a new value before calling strftime() |
| 457 | will influence the result (the %Z format) even if the information in |
| 458 | TP is computed with a totally different time zone. |
| 459 | This is bogus: though POSIX allows bad behavior like this, |
| 460 | POSIX does not require it. Do the right thing instead. */ |
| 461 | zone = (const char *) tp->tm_zone; |
| 462 | #endif |
| 463 | #if HAVE_TZNAME |
| 464 | if (ut) |
| 465 | { |
| 466 | if (! (zone && *zone)) |
| 467 | zone = "GMT"; |
| 468 | } |
| 469 | else |
| 470 | { |
| 471 | /* POSIX.1 8.1.1 requires that whenever strftime() is called, the |
| 472 | time zone names contained in the external variable `tzname' shall |
| 473 | be set as if the tzset() function had been called. */ |
| 474 | # if HAVE_TZSET |
| 475 | tzset (); |
| 476 | # endif |
| 477 | } |
| 478 | #endif |
| 479 | |
| 480 | if (hour12 > 12) |
| 481 | hour12 -= 12; |
| 482 | else |
| 483 | if (hour12 == 0) |
| 484 | hour12 = 12; |
| 485 | |
| 486 | for (f = format; *f != '\0'; ++f) |
| 487 | { |
| 488 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
| 489 | int modifier; /* Field modifier ('E', 'O', or 0). */ |
| 490 | int digits; /* Max digits for numeric format. */ |
| 491 | int number_value; /* Numeric value to be printed. */ |
| 492 | int negative_number; /* 1 if the number is negative. */ |
| 493 | const char *subfmt; |
| 494 | char *bufp; |
| 495 | char buf[1 + (sizeof (int) < sizeof (time_t) |
| 496 | ? INT_STRLEN_BOUND (time_t) |
| 497 | : INT_STRLEN_BOUND (int))]; |
| 498 | int width = -1; |
| 499 | int to_lowcase = 0; |
| 500 | int to_uppcase = 0; |
| 501 | int change_case = 0; |
| 502 | int format_char; |
| 503 | |
| 504 | #if DO_MULTIBYTE |
| 505 | |
| 506 | switch (*f) |
| 507 | { |
| 508 | case '%': |
| 509 | break; |
| 510 | |
| 511 | case '\a': case '\b': case '\t': case '\n': |
| 512 | case '\v': case '\f': case '\r': |
| 513 | case ' ': case '!': case '"': case '#': case '&': case'\'': |
| 514 | case '(': case ')': case '*': case '+': case ',': case '-': |
| 515 | case '.': case '/': case '0': case '1': case '2': case '3': |
| 516 | case '4': case '5': case '6': case '7': case '8': case '9': |
| 517 | case ':': case ';': case '<': case '=': case '>': case '?': |
| 518 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': |
| 519 | case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': |
| 520 | case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': |
| 521 | case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': |
| 522 | case 'Y': case 'Z': case '[': case'\\': case ']': case '^': |
| 523 | case '_': case 'a': case 'b': case 'c': case 'd': case 'e': |
| 524 | case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': |
| 525 | case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': |
| 526 | case 'r': case 's': case 't': case 'u': case 'v': case 'w': |
| 527 | case 'x': case 'y': case 'z': case '{': case '|': case '}': |
| 528 | case '~': |
| 529 | /* The C Standard requires these 98 characters (plus '%') to |
| 530 | be in the basic execution character set. None of these |
| 531 | characters can start a multibyte sequence, so they need |
| 532 | not be analyzed further. */ |
| 533 | add (1, *p = *f); |
| 534 | continue; |
| 535 | |
| 536 | default: |
| 537 | /* Copy this multibyte sequence until we reach its end, find |
| 538 | an error, or come back to the initial shift state. */ |
| 539 | { |
| 540 | mbstate_t mbstate = mbstate_zero; |
| 541 | size_t len = 0; |
| 542 | |
| 543 | do |
| 544 | { |
| 545 | size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); |
| 546 | |
| 547 | if (bytes == 0) |
| 548 | break; |
| 549 | |
| 550 | if (bytes == (size_t) -2) |
| 551 | { |
| 552 | len += strlen (f + len); |
| 553 | break; |
| 554 | } |
| 555 | |
| 556 | if (bytes == (size_t) -1) |
| 557 | { |
| 558 | len++; |
| 559 | break; |
| 560 | } |
| 561 | |
| 562 | len += bytes; |
| 563 | } |
| 564 | while (! mbsinit (&mbstate)); |
| 565 | |
| 566 | cpy (len, f); |
| 567 | f += len - 1; |
| 568 | continue; |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | #else /* ! DO_MULTIBYTE */ |
| 573 | |
| 574 | /* Either multibyte encodings are not supported, or they are |
| 575 | safe for formats, so any non-'%' byte can be copied through. */ |
| 576 | if (*f != '%') |
| 577 | { |
| 578 | add (1, *p = *f); |
| 579 | continue; |
| 580 | } |
| 581 | |
| 582 | #endif /* ! DO_MULTIBYTE */ |
| 583 | |
| 584 | /* Check for flags that can modify a format. */ |
| 585 | while (1) |
| 586 | { |
| 587 | switch (*++f) |
| 588 | { |
| 589 | /* This influences the number formats. */ |
| 590 | case '_': |
| 591 | case '-': |
| 592 | case '0': |
| 593 | pad = *f; |
| 594 | continue; |
| 595 | |
| 596 | /* This changes textual output. */ |
| 597 | case '^': |
| 598 | to_uppcase = 1; |
| 599 | continue; |
| 600 | case '#': |
| 601 | change_case = 1; |
| 602 | continue; |
| 603 | |
| 604 | default: |
| 605 | break; |
| 606 | } |
| 607 | break; |
| 608 | } |
| 609 | |
| 610 | /* As a GNU extension we allow to specify the field width. */ |
| 611 | if (ISDIGIT (*f)) |
| 612 | { |
| 613 | width = 0; |
| 614 | do |
| 615 | { |
| 616 | width *= 10; |
| 617 | width += *f - '0'; |
| 618 | ++f; |
| 619 | } |
| 620 | while (ISDIGIT (*f)); |
| 621 | } |
| 622 | |
| 623 | /* Check for modifiers. */ |
| 624 | switch (*f) |
| 625 | { |
| 626 | case 'E': |
| 627 | case 'O': |
| 628 | modifier = *f++; |
| 629 | break; |
| 630 | |
| 631 | default: |
| 632 | modifier = 0; |
| 633 | break; |
| 634 | } |
| 635 | |
| 636 | /* Now do the specified format. */ |
| 637 | format_char = *f; |
| 638 | switch (format_char) |
| 639 | { |
| 640 | #define DO_NUMBER(d, v) \ |
| 641 | digits = width == -1 ? d : width; \ |
| 642 | number_value = v; goto do_number |
| 643 | #define DO_NUMBER_SPACEPAD(d, v) \ |
| 644 | digits = width == -1 ? d : width; \ |
| 645 | number_value = v; goto do_number_spacepad |
| 646 | |
| 647 | case '%': |
| 648 | if (modifier != 0) |
| 649 | goto bad_format; |
| 650 | add (1, *p = *f); |
| 651 | break; |
| 652 | |
| 653 | case 'a': |
| 654 | if (modifier != 0) |
| 655 | goto bad_format; |
| 656 | if (change_case) |
| 657 | { |
| 658 | to_uppcase = 1; |
| 659 | to_lowcase = 0; |
| 660 | } |
| 661 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 662 | cpy (aw_len, a_wkday); |
| 663 | break; |
| 664 | #else |
| 665 | goto underlying_strftime; |
| 666 | #endif |
| 667 | |
| 668 | case 'A': |
| 669 | if (modifier != 0) |
| 670 | goto bad_format; |
| 671 | if (change_case) |
| 672 | { |
| 673 | to_uppcase = 1; |
| 674 | to_lowcase = 0; |
| 675 | } |
| 676 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 677 | cpy (strlen (f_wkday), f_wkday); |
| 678 | break; |
| 679 | #else |
| 680 | goto underlying_strftime; |
| 681 | #endif |
| 682 | |
| 683 | case 'b': |
| 684 | case 'h': /* POSIX.2 extension. */ |
| 685 | if (modifier != 0) |
| 686 | goto bad_format; |
| 687 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 688 | cpy (am_len, a_month); |
| 689 | break; |
| 690 | #else |
| 691 | goto underlying_strftime; |
| 692 | #endif |
| 693 | |
| 694 | case 'B': |
| 695 | if (modifier != 0) |
| 696 | goto bad_format; |
| 697 | if (change_case) |
| 698 | { |
| 699 | to_uppcase = 1; |
| 700 | to_lowcase = 0; |
| 701 | } |
| 702 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 703 | cpy (strlen (f_month), f_month); |
| 704 | break; |
| 705 | #else |
| 706 | goto underlying_strftime; |
| 707 | #endif |
| 708 | |
| 709 | case 'c': |
| 710 | if (modifier == 'O') |
| 711 | goto bad_format; |
| 712 | #ifdef _NL_CURRENT |
| 713 | if (! (modifier == 'E' |
| 714 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0')) |
| 715 | subfmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
| 716 | #else |
| 717 | # if HAVE_STRFTIME |
| 718 | goto underlying_strftime; |
| 719 | # else |
| 720 | subfmt = "%a %b %e %H:%M:%S %Y"; |
| 721 | # endif |
| 722 | #endif |
| 723 | |
| 724 | subformat: |
| 725 | { |
| 726 | char *old_start = p; |
| 727 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, |
| 728 | tp ut_argument); |
| 729 | add (len, my_strftime (p, maxsize - i, subfmt, tp ut_argument)); |
| 730 | |
| 731 | if (to_uppcase) |
| 732 | while (old_start < p) |
| 733 | { |
| 734 | *old_start = TOUPPER ((unsigned char) *old_start); |
| 735 | ++old_start; |
| 736 | } |
| 737 | } |
| 738 | break; |
| 739 | |
| 740 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) |
| 741 | underlying_strftime: |
| 742 | { |
| 743 | /* The relevant information is available only via the |
| 744 | underlying strftime implementation, so use that. */ |
| 745 | char ufmt[4]; |
| 746 | char *u = ufmt; |
| 747 | char ubuf[1024]; /* enough for any single format in practice */ |
| 748 | size_t len; |
| 749 | *u++ = '%'; |
| 750 | if (modifier != 0) |
| 751 | *u++ = modifier; |
| 752 | *u++ = format_char; |
| 753 | *u = '\0'; |
| 754 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); |
| 755 | if (len == 0 && ubuf[0] != '\0') |
| 756 | return 0; |
| 757 | cpy (len, ubuf); |
| 758 | } |
| 759 | break; |
| 760 | #endif |
| 761 | |
| 762 | case 'C': /* POSIX.2 extension. */ |
| 763 | if (modifier == 'O') |
| 764 | goto bad_format; |
| 765 | if (modifier == 'E') |
| 766 | { |
| 767 | #if HAVE_STRUCT_ERA_ENTRY |
| 768 | struct era_entry *era = _nl_get_era_entry (tp); |
| 769 | if (era) |
| 770 | { |
| 771 | size_t len = strlen (era->name_fmt); |
| 772 | cpy (len, era->name_fmt); |
| 773 | break; |
| 774 | } |
| 775 | #else |
| 776 | # if HAVE_STRFTIME |
| 777 | goto underlying_strftime; |
| 778 | # endif |
| 779 | #endif |
| 780 | } |
| 781 | |
| 782 | { |
| 783 | int year = tp->tm_year + TM_YEAR_BASE; |
| 784 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); |
| 785 | } |
| 786 | |
| 787 | case 'x': |
| 788 | if (modifier == 'O') |
| 789 | goto bad_format; |
| 790 | #ifdef _NL_CURRENT |
| 791 | if (! (modifier == 'E' |
| 792 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0')) |
| 793 | subfmt = _NL_CURRENT (LC_TIME, D_FMT); |
| 794 | goto subformat; |
| 795 | #else |
| 796 | # if HAVE_STRFTIME |
| 797 | goto underlying_strftime; |
| 798 | # else |
| 799 | /* Fall through. */ |
| 800 | # endif |
| 801 | #endif |
| 802 | case 'D': /* POSIX.2 extension. */ |
| 803 | if (modifier != 0) |
| 804 | goto bad_format; |
| 805 | subfmt = "%m/%d/%y"; |
| 806 | goto subformat; |
| 807 | |
| 808 | case 'd': |
| 809 | if (modifier == 'E') |
| 810 | goto bad_format; |
| 811 | |
| 812 | DO_NUMBER (2, tp->tm_mday); |
| 813 | |
| 814 | case 'e': /* POSIX.2 extension. */ |
| 815 | if (modifier == 'E') |
| 816 | goto bad_format; |
| 817 | |
| 818 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
| 819 | |
| 820 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
| 821 | jump to one of these two labels. */ |
| 822 | |
| 823 | do_number_spacepad: |
| 824 | /* Force `_' flag unless overwritten by `0' flag. */ |
| 825 | if (pad != '0') |
| 826 | pad = '_'; |
| 827 | |
| 828 | do_number: |
| 829 | /* Format the number according to the MODIFIER flag. */ |
| 830 | |
| 831 | if (modifier == 'O' && 0 <= number_value) |
| 832 | { |
| 833 | #ifdef _NL_CURRENT |
| 834 | /* Get the locale specific alternate representation of |
| 835 | the number NUMBER_VALUE. If none exist NULL is returned. */ |
| 836 | const char *cp = _nl_get_alt_digit (number_value); |
| 837 | |
| 838 | if (cp != NULL) |
| 839 | { |
| 840 | size_t digitlen = strlen (cp); |
| 841 | if (digitlen != 0) |
| 842 | { |
| 843 | cpy (digitlen, cp); |
| 844 | break; |
| 845 | } |
| 846 | } |
| 847 | #else |
| 848 | # if HAVE_STRFTIME |
| 849 | goto underlying_strftime; |
| 850 | # endif |
| 851 | #endif |
| 852 | } |
| 853 | { |
| 854 | unsigned int u = number_value; |
| 855 | |
| 856 | bufp = buf + sizeof (buf); |
| 857 | negative_number = number_value < 0; |
| 858 | |
| 859 | if (negative_number) |
| 860 | u = -u; |
| 861 | |
| 862 | do |
| 863 | *--bufp = u % 10 + '0'; |
| 864 | while ((u /= 10) != 0); |
| 865 | } |
| 866 | |
| 867 | do_number_sign_and_padding: |
| 868 | if (negative_number) |
| 869 | *--bufp = '-'; |
| 870 | |
| 871 | if (pad != '-') |
| 872 | { |
| 873 | int padding = digits - (buf + sizeof (buf) - bufp); |
| 874 | |
| 875 | if (pad == '_') |
| 876 | { |
| 877 | while (0 < padding--) |
| 878 | *--bufp = ' '; |
| 879 | } |
| 880 | else |
| 881 | { |
| 882 | bufp += negative_number; |
| 883 | while (0 < padding--) |
| 884 | *--bufp = '0'; |
| 885 | if (negative_number) |
| 886 | *--bufp = '-'; |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | cpy (buf + sizeof (buf) - bufp, bufp); |
| 891 | break; |
| 892 | |
| 893 | case 'F': |
| 894 | if (modifier != 0) |
| 895 | goto bad_format; |
| 896 | subfmt = "%Y-%m-%d"; |
| 897 | goto subformat; |
| 898 | |
| 899 | case 'H': |
| 900 | if (modifier == 'E') |
| 901 | goto bad_format; |
| 902 | |
| 903 | DO_NUMBER (2, tp->tm_hour); |
| 904 | |
| 905 | case 'I': |
| 906 | if (modifier == 'E') |
| 907 | goto bad_format; |
| 908 | |
| 909 | DO_NUMBER (2, hour12); |
| 910 | |
| 911 | case 'k': /* GNU extension. */ |
| 912 | if (modifier == 'E') |
| 913 | goto bad_format; |
| 914 | |
| 915 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); |
| 916 | |
| 917 | case 'l': /* GNU extension. */ |
| 918 | if (modifier == 'E') |
| 919 | goto bad_format; |
| 920 | |
| 921 | DO_NUMBER_SPACEPAD (2, hour12); |
| 922 | |
| 923 | case 'j': |
| 924 | if (modifier == 'E') |
| 925 | goto bad_format; |
| 926 | |
| 927 | DO_NUMBER (3, 1 + tp->tm_yday); |
| 928 | |
| 929 | case 'M': |
| 930 | if (modifier == 'E') |
| 931 | goto bad_format; |
| 932 | |
| 933 | DO_NUMBER (2, tp->tm_min); |
| 934 | |
| 935 | case 'm': |
| 936 | if (modifier == 'E') |
| 937 | goto bad_format; |
| 938 | |
| 939 | DO_NUMBER (2, tp->tm_mon + 1); |
| 940 | |
| 941 | case 'n': /* POSIX.2 extension. */ |
| 942 | add (1, *p = '\n'); |
| 943 | break; |
| 944 | |
| 945 | case 'P': |
| 946 | to_lowcase = 1; |
| 947 | #if !defined _NL_CURRENT && HAVE_STRFTIME |
| 948 | format_char = 'p'; |
| 949 | #endif |
| 950 | /* FALLTHROUGH */ |
| 951 | |
| 952 | case 'p': |
| 953 | if (change_case) |
| 954 | { |
| 955 | to_uppcase = 0; |
| 956 | to_lowcase = 1; |
| 957 | } |
| 958 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
| 959 | cpy (ap_len, ampm); |
| 960 | break; |
| 961 | #else |
| 962 | goto underlying_strftime; |
| 963 | #endif |
| 964 | |
| 965 | case 'R': /* GNU extension. */ |
| 966 | subfmt = "%H:%M"; |
| 967 | goto subformat; |
| 968 | |
| 969 | case 'r': /* POSIX.2 extension. */ |
| 970 | #ifdef _NL_CURRENT |
| 971 | if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0') |
| 972 | #endif |
| 973 | subfmt = "%I:%M:%S %p"; |
| 974 | goto subformat; |
| 975 | |
| 976 | case 'S': |
| 977 | if (modifier == 'E') |
| 978 | goto bad_format; |
| 979 | |
| 980 | DO_NUMBER (2, tp->tm_sec); |
| 981 | |
| 982 | case 's': /* GNU extension. */ |
| 983 | { |
| 984 | struct tm ltm; |
| 985 | time_t t; |
| 986 | |
| 987 | ltm = *tp; |
| 988 | t = mktime (<m); |
| 989 | |
| 990 | /* Generate string value for T using time_t arithmetic; |
| 991 | this works even if sizeof (long) < sizeof (time_t). */ |
| 992 | |
| 993 | bufp = buf + sizeof (buf); |
| 994 | negative_number = t < 0; |
| 995 | |
| 996 | do |
| 997 | { |
| 998 | int d = t % 10; |
| 999 | t /= 10; |
| 1000 | |
| 1001 | if (negative_number) |
| 1002 | { |
| 1003 | d = -d; |
| 1004 | |
| 1005 | /* Adjust if division truncates to minus infinity. */ |
| 1006 | if (0 < -1 % 10 && d < 0) |
| 1007 | { |
| 1008 | t++; |
| 1009 | d += 10; |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | *--bufp = d + '0'; |
| 1014 | } |
| 1015 | while (t != 0); |
| 1016 | |
| 1017 | digits = 1; |
| 1018 | goto do_number_sign_and_padding; |
| 1019 | } |
| 1020 | |
| 1021 | case 'X': |
| 1022 | if (modifier == 'O') |
| 1023 | goto bad_format; |
| 1024 | #ifdef _NL_CURRENT |
| 1025 | if (! (modifier == 'E' |
| 1026 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0')) |
| 1027 | subfmt = _NL_CURRENT (LC_TIME, T_FMT); |
| 1028 | goto subformat; |
| 1029 | #else |
| 1030 | # if HAVE_STRFTIME |
| 1031 | goto underlying_strftime; |
| 1032 | # else |
| 1033 | /* Fall through. */ |
| 1034 | # endif |
| 1035 | #endif |
| 1036 | case 'T': /* POSIX.2 extension. */ |
| 1037 | subfmt = "%H:%M:%S"; |
| 1038 | goto subformat; |
| 1039 | |
| 1040 | case 't': /* POSIX.2 extension. */ |
| 1041 | add (1, *p = '\t'); |
| 1042 | break; |
| 1043 | |
| 1044 | case 'u': /* POSIX.2 extension. */ |
| 1045 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); |
| 1046 | |
| 1047 | case 'U': |
| 1048 | if (modifier == 'E') |
| 1049 | goto bad_format; |
| 1050 | |
| 1051 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); |
| 1052 | |
| 1053 | case 'V': |
| 1054 | case 'g': /* GNU extension. */ |
| 1055 | case 'G': /* GNU extension. */ |
| 1056 | if (modifier == 'E') |
| 1057 | goto bad_format; |
| 1058 | { |
| 1059 | int year = tp->tm_year + TM_YEAR_BASE; |
| 1060 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); |
| 1061 | |
| 1062 | if (days < 0) |
| 1063 | { |
| 1064 | /* This ISO week belongs to the previous year. */ |
| 1065 | year--; |
| 1066 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), |
| 1067 | tp->tm_wday); |
| 1068 | } |
| 1069 | else |
| 1070 | { |
| 1071 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), |
| 1072 | tp->tm_wday); |
| 1073 | if (0 <= d) |
| 1074 | { |
| 1075 | /* This ISO week belongs to the next year. */ |
| 1076 | year++; |
| 1077 | days = d; |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | switch (*f) |
| 1082 | { |
| 1083 | case 'g': |
| 1084 | DO_NUMBER (2, (year % 100 + 100) % 100); |
| 1085 | |
| 1086 | case 'G': |
| 1087 | DO_NUMBER (1, year); |
| 1088 | |
| 1089 | default: |
| 1090 | DO_NUMBER (2, days / 7 + 1); |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | case 'W': |
| 1095 | if (modifier == 'E') |
| 1096 | goto bad_format; |
| 1097 | |
| 1098 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); |
| 1099 | |
| 1100 | case 'w': |
| 1101 | if (modifier == 'E') |
| 1102 | goto bad_format; |
| 1103 | |
| 1104 | DO_NUMBER (1, tp->tm_wday); |
| 1105 | |
| 1106 | case 'Y': |
| 1107 | if (modifier == 'E') |
| 1108 | { |
| 1109 | #if HAVE_STRUCT_ERA_ENTRY |
| 1110 | struct era_entry *era = _nl_get_era_entry (tp); |
| 1111 | if (era) |
| 1112 | { |
| 1113 | subfmt = strchr (era->name_fmt, '\0') + 1; |
| 1114 | goto subformat; |
| 1115 | } |
| 1116 | #else |
| 1117 | # if HAVE_STRFTIME |
| 1118 | goto underlying_strftime; |
| 1119 | # endif |
| 1120 | #endif |
| 1121 | } |
| 1122 | if (modifier == 'O') |
| 1123 | goto bad_format; |
| 1124 | else |
| 1125 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); |
| 1126 | |
| 1127 | case 'y': |
| 1128 | if (modifier == 'E') |
| 1129 | { |
| 1130 | #if HAVE_STRUCT_ERA_ENTRY |
| 1131 | struct era_entry *era = _nl_get_era_entry (tp); |
| 1132 | if (era) |
| 1133 | { |
| 1134 | int delta = tp->tm_year - era->start_date[0]; |
| 1135 | DO_NUMBER (1, (era->offset |
| 1136 | + (era->direction == '-' ? -delta : delta))); |
| 1137 | } |
| 1138 | #else |
| 1139 | # if HAVE_STRFTIME |
| 1140 | goto underlying_strftime; |
| 1141 | # endif |
| 1142 | #endif |
| 1143 | } |
| 1144 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); |
| 1145 | |
| 1146 | case 'Z': |
| 1147 | if (change_case) |
| 1148 | { |
| 1149 | to_uppcase = 0; |
| 1150 | to_lowcase = 1; |
| 1151 | } |
| 1152 | |
| 1153 | #if HAVE_TZNAME |
| 1154 | /* The tzset() call might have changed the value. */ |
| 1155 | if (!(zone && *zone) && tp->tm_isdst >= 0) |
| 1156 | zone = tzname[tp->tm_isdst]; |
| 1157 | #endif |
| 1158 | if (! zone) |
| 1159 | zone = ""; /* POSIX.2 requires the empty string here. */ |
| 1160 | |
| 1161 | cpy (strlen (zone), zone); |
| 1162 | break; |
| 1163 | |
| 1164 | case 'z': /* GNU extension. */ |
| 1165 | if (tp->tm_isdst < 0) |
| 1166 | break; |
| 1167 | |
| 1168 | { |
| 1169 | int diff; |
| 1170 | #if HAVE_TM_GMTOFF |
| 1171 | diff = tp->tm_gmtoff; |
| 1172 | #else |
| 1173 | if (ut) |
| 1174 | diff = 0; |
| 1175 | else |
| 1176 | { |
| 1177 | struct tm gtm; |
| 1178 | struct tm ltm; |
| 1179 | time_t lt; |
| 1180 | |
| 1181 | ltm = *tp; |
| 1182 | lt = mktime (<m); |
| 1183 | |
| 1184 | if (lt == (time_t) -1) |
| 1185 | { |
| 1186 | /* mktime returns -1 for errors, but -1 is also a |
| 1187 | valid time_t value. Check whether an error really |
| 1188 | occurred. */ |
| 1189 | struct tm tm; |
| 1190 | |
| 1191 | if (! my_strftime_localtime_r (<, &tm) |
| 1192 | || ((ltm.tm_sec ^ tm.tm_sec) |
| 1193 | | (ltm.tm_min ^ tm.tm_min) |
| 1194 | | (ltm.tm_hour ^ tm.tm_hour) |
| 1195 | | (ltm.tm_mday ^ tm.tm_mday) |
| 1196 | | (ltm.tm_mon ^ tm.tm_mon) |
| 1197 | | (ltm.tm_year ^ tm.tm_year))) |
| 1198 | break; |
| 1199 | } |
| 1200 | |
| 1201 | if (! my_strftime_gmtime_r (<, >m)) |
| 1202 | break; |
| 1203 | |
| 1204 | diff = tm_diff (<m, >m); |
| 1205 | } |
| 1206 | #endif |
| 1207 | |
| 1208 | if (diff < 0) |
| 1209 | { |
| 1210 | add (1, *p = '-'); |
| 1211 | diff = -diff; |
| 1212 | } |
| 1213 | else |
| 1214 | add (1, *p = '+'); |
| 1215 | |
| 1216 | diff /= 60; |
| 1217 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); |
| 1218 | } |
| 1219 | |
| 1220 | case '\0': /* GNU extension: % at end of format. */ |
| 1221 | --f; |
| 1222 | /* Fall through. */ |
| 1223 | default: |
| 1224 | /* Unknown format; output the format, including the '%', |
| 1225 | since this is most likely the right thing to do if a |
| 1226 | multibyte string has been misparsed. */ |
| 1227 | bad_format: |
| 1228 | { |
| 1229 | int flen; |
| 1230 | for (flen = 1; f[1 - flen] != '%'; flen++) |
| 1231 | continue; |
| 1232 | cpy (flen, &f[1 - flen]); |
| 1233 | } |
| 1234 | break; |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | if (p && maxsize != 0) |
| 1239 | *p = '\0'; |
| 1240 | return i; |
| 1241 | } |