Commit | Line | Data |
---|---|---|
1823194b | 1 | /* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc. |
89752145 | 2 | NOTE: The canonical source of this file is maintained with the GNU C Library. |
1823194b | 3 | Bugs can be reported to bug-glibc@gnu.org. |
8ce9b63e | 4 | |
89752145 PE |
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. | |
8ce9b63e | 9 | |
89752145 PE |
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. | |
8ce9b63e | 14 | |
89752145 | 15 | You should have received a copy of the GNU General Public License |
68c45bf0 PE |
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. */ | |
49fb5799 PE |
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 | |
49fb5799 PE |
34 | # include "../locale/localeinfo.h" |
35 | #endif | |
36 | ||
ffa0434b PE |
37 | #if defined emacs && !defined HAVE_BCOPY |
38 | # define HAVE_MEMCPY 1 | |
39 | #endif | |
40 | ||
49fb5799 PE |
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 | |
03695ace | 55 | #ifndef USE_CRT_DLL |
49fb5799 PE |
56 | extern char *tzname[]; |
57 | #endif | |
03695ace | 58 | #endif |
49fb5799 PE |
59 | |
60 | /* Do multibyte processing if multibytes are supported, unless | |
61 | multibyte sequences are safe in formats. Multibyte sequences are | |
62 | safe if they cannot contain byte sequences that look like format | |
63 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
64 | encoding, which is safe for formats, but strftime.c can be used | |
65 | with other C libraries that use unsafe encodings. */ | |
66 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
67 | ||
68 | #if DO_MULTIBYTE | |
69 | # if HAVE_MBRLEN | |
70 | # include <wchar.h> | |
71 | # else | |
72 | /* Simulate mbrlen with mblen as best we can. */ | |
73 | # define mbstate_t int | |
74 | # define mbrlen(s, n, ps) mblen (s, n) | |
75 | # define mbsinit(ps) (*(ps) == 0) | |
76 | # endif | |
77 | static const mbstate_t mbstate_zero; | |
78 | #endif | |
79 | ||
80 | #if HAVE_LIMITS_H | |
81 | # include <limits.h> | |
82 | #endif | |
83 | ||
84 | #if STDC_HEADERS | |
85 | # include <stddef.h> | |
86 | # include <stdlib.h> | |
87 | # include <string.h> | |
88 | #else | |
1b65a66c PE |
89 | # ifndef HAVE_MEMCPY |
90 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) | |
91 | # endif | |
49fb5799 PE |
92 | #endif |
93 | ||
4e941b8e UD |
94 | #ifdef _LIBC |
95 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) | |
96 | #else | |
97 | # ifndef HAVE_MEMPCPY | |
98 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) | |
99 | # endif | |
100 | #endif | |
101 | ||
49fb5799 | 102 | #ifndef __P |
eea0252e | 103 | # if defined (PROTOTYPES) |
49fb5799 PE |
104 | # define __P(args) args |
105 | # else | |
106 | # define __P(args) () | |
107 | # endif /* GCC. */ | |
108 | #endif /* Not __P. */ | |
109 | ||
110 | #ifndef PTR | |
111 | # ifdef __STDC__ | |
112 | # define PTR void * | |
113 | # else | |
114 | # define PTR char * | |
115 | # endif | |
116 | #endif | |
117 | ||
118 | #ifndef CHAR_BIT | |
119 | # define CHAR_BIT 8 | |
120 | #endif | |
121 | ||
122 | #ifndef NULL | |
123 | # define NULL 0 | |
124 | #endif | |
125 | ||
126 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
127 | ||
128 | /* Bound on length of the string representing an integer value of type t. | |
129 | Subtract one for the sign bit if t is signed; | |
130 | 302 / 1000 is log10 (2) rounded up; | |
131 | add one for integer division truncation; | |
132 | add one more for a minus sign if t is signed. */ | |
133 | #define INT_STRLEN_BOUND(t) \ | |
68c45bf0 | 134 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) |
49fb5799 PE |
135 | |
136 | #define TM_YEAR_BASE 1900 | |
137 | ||
138 | #ifndef __isleap | |
139 | /* Nonzero if YEAR is a leap year (every 4 years, | |
140 | except every 100th isn't, and every 400th is). */ | |
141 | # define __isleap(year) \ | |
142 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) | |
143 | #endif | |
144 | ||
145 | ||
146 | #ifdef _LIBC | |
68c45bf0 PE |
147 | # define my_strftime_gmtime_r __gmtime_r |
148 | # define my_strftime_localtime_r __localtime_r | |
49fb5799 PE |
149 | # define tzname __tzname |
150 | # define tzset __tzset | |
151 | #else | |
68c45bf0 PE |
152 | |
153 | /* If we're a strftime substitute in a GNU program, then prefer gmtime | |
154 | to gmtime_r, since many gmtime_r implementations are buggy. | |
155 | Similarly for localtime_r. */ | |
156 | ||
157 | # if ! HAVE_TM_GMTOFF | |
158 | static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *)); | |
49fb5799 | 159 | static struct tm * |
68c45bf0 | 160 | my_strftime_gmtime_r (t, tp) |
49fb5799 PE |
161 | const time_t *t; |
162 | struct tm *tp; | |
163 | { | |
164 | struct tm *l = gmtime (t); | |
165 | if (! l) | |
166 | return 0; | |
167 | *tp = *l; | |
168 | return tp; | |
169 | } | |
68c45bf0 | 170 | # endif /* ! HAVE_TM_GMTOFF */ |
49fb5799 | 171 | |
68c45bf0 | 172 | static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *)); |
49fb5799 | 173 | static struct tm * |
68c45bf0 | 174 | my_strftime_localtime_r (t, tp) |
49fb5799 PE |
175 | const time_t *t; |
176 | struct tm *tp; | |
177 | { | |
178 | struct tm *l = localtime (t); | |
179 | if (! l) | |
180 | return 0; | |
181 | *tp = *l; | |
182 | return tp; | |
183 | } | |
649e97a3 | 184 | #endif /* ! defined _LIBC */ |
49fb5799 PE |
185 | |
186 | ||
1b65a66c | 187 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC |
49fb5799 PE |
188 | /* Some systems lack the `memset' function and we don't want to |
189 | introduce additional dependencies. */ | |
c72e6644 RS |
190 | /* The SGI compiler reportedly barfs on the trailing null |
191 | if we use a string constant as the initializer. 28 June 1997, rms. */ | |
1b65a66c PE |
192 | static const char spaces[16] = /* " " */ |
193 | { ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ' }; | |
194 | static const char zeroes[16] = /* "0000000000000000" */ | |
195 | { '0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0' }; | |
49fb5799 PE |
196 | |
197 | # define memset_space(P, Len) \ | |
198 | do { \ | |
199 | int _len = (Len); \ | |
200 | \ | |
201 | do \ | |
202 | { \ | |
203 | int _this = _len > 16 ? 16 : _len; \ | |
649e97a3 | 204 | (P) = MEMPCPY ((P), spaces, _this); \ |
49fb5799 PE |
205 | _len -= _this; \ |
206 | } \ | |
207 | while (_len > 0); \ | |
208 | } while (0) | |
098401cf PE |
209 | |
210 | # define memset_zero(P, Len) \ | |
211 | do { \ | |
212 | int _len = (Len); \ | |
213 | \ | |
214 | do \ | |
215 | { \ | |
216 | int _this = _len > 16 ? 16 : _len; \ | |
649e97a3 | 217 | (P) = MEMPCPY ((P), zeroes, _this); \ |
098401cf PE |
218 | _len -= _this; \ |
219 | } \ | |
220 | while (_len > 0); \ | |
221 | } while (0) | |
49fb5799 PE |
222 | #else |
223 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) | |
098401cf | 224 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) |
49fb5799 PE |
225 | #endif |
226 | ||
1b65a66c | 227 | #define add(n, f) \ |
49fb5799 PE |
228 | do \ |
229 | { \ | |
230 | int _n = (n); \ | |
231 | int _delta = width - _n; \ | |
232 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
233 | if (i + _incr >= maxsize) \ | |
234 | return 0; \ | |
235 | if (p) \ | |
236 | { \ | |
237 | if (_delta > 0) \ | |
098401cf PE |
238 | { \ |
239 | if (pad == '0') \ | |
240 | memset_zero (p, _delta); \ | |
241 | else \ | |
242 | memset_space (p, _delta); \ | |
243 | } \ | |
49fb5799 PE |
244 | f; \ |
245 | p += _n; \ | |
246 | } \ | |
247 | i += _incr; \ | |
248 | } while (0) | |
249 | ||
1b65a66c | 250 | #define cpy(n, s) \ |
49fb5799 PE |
251 | add ((n), \ |
252 | if (to_lowcase) \ | |
253 | memcpy_lowcase (p, (s), _n); \ | |
254 | else if (to_uppcase) \ | |
255 | memcpy_uppcase (p, (s), _n); \ | |
256 | else \ | |
257 | memcpy ((PTR) p, (PTR) (s), _n)) | |
258 | ||
259 | ||
260 | ||
261 | #ifdef _LIBC | |
262 | # define TOUPPER(Ch) toupper (Ch) | |
263 | # define TOLOWER(Ch) tolower (Ch) | |
264 | #else | |
265 | # define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch)) | |
266 | # define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
267 | #endif | |
268 | /* We don't use `isdigit' here since the locale dependent | |
269 | interpretation is not what we want here. We only need to accept | |
270 | the arabic digits in the ASCII range. One day there is perhaps a | |
271 | more reliable way to accept other sets of digits. */ | |
272 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - '0' <= 9) | |
273 | ||
274 | static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len)); | |
275 | ||
276 | static char * | |
277 | memcpy_lowcase (dest, src, len) | |
278 | char *dest; | |
279 | const char *src; | |
280 | size_t len; | |
281 | { | |
282 | while (len-- > 0) | |
4b7c78fc | 283 | dest[len] = TOLOWER ((unsigned char) src[len]); |
49fb5799 PE |
284 | return dest; |
285 | } | |
286 | ||
287 | static char *memcpy_uppcase __P ((char *dest, const char *src, size_t len)); | |
288 | ||
289 | static char * | |
290 | memcpy_uppcase (dest, src, len) | |
291 | char *dest; | |
292 | const char *src; | |
293 | size_t len; | |
294 | { | |
295 | while (len-- > 0) | |
4b7c78fc | 296 | dest[len] = TOUPPER ((unsigned char) src[len]); |
49fb5799 PE |
297 | return dest; |
298 | } | |
299 | ||
1b65a66c | 300 | |
49fb5799 PE |
301 | #if ! HAVE_TM_GMTOFF |
302 | /* Yield the difference between *A and *B, | |
303 | measured in seconds, ignoring leap seconds. */ | |
1b65a66c | 304 | # define tm_diff ftime_tm_diff |
49fb5799 PE |
305 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
306 | static int | |
307 | tm_diff (a, b) | |
308 | const struct tm *a; | |
309 | const struct tm *b; | |
310 | { | |
311 | /* Compute intervening leap days correctly even if year is negative. | |
312 | Take care to avoid int overflow in leap day calculations, | |
313 | but it's OK to assume that A and B are close to each other. */ | |
314 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
315 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
316 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
317 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
318 | int a400 = a100 >> 2; | |
319 | int b400 = b100 >> 2; | |
320 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
321 | int years = a->tm_year - b->tm_year; | |
322 | int days = (365 * years + intervening_leap_days | |
323 | + (a->tm_yday - b->tm_yday)); | |
324 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
325 | + (a->tm_min - b->tm_min)) | |
326 | + (a->tm_sec - b->tm_sec)); | |
327 | } | |
328 | #endif /* ! HAVE_TM_GMTOFF */ | |
329 | ||
330 | ||
331 | ||
332 | /* The number of days from the first day of the first ISO week of this | |
333 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
334 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
335 | be as small as YDAY_MINIMUM. */ | |
336 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
337 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
338 | #define YDAY_MINIMUM (-366) | |
339 | static int iso_week_days __P ((int, int)); | |
340 | #ifdef __GNUC__ | |
ffa0434b | 341 | __inline__ |
49fb5799 PE |
342 | #endif |
343 | static int | |
344 | iso_week_days (yday, wday) | |
345 | int yday; | |
346 | int wday; | |
347 | { | |
348 | /* Add enough to the first operand of % to make it nonnegative. */ | |
349 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
350 | return (yday | |
351 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 | |
352 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
353 | } | |
354 | ||
355 | ||
4b7c78fc | 356 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) |
49fb5799 PE |
357 | static char const weekday_name[][10] = |
358 | { | |
359 | "Sunday", "Monday", "Tuesday", "Wednesday", | |
360 | "Thursday", "Friday", "Saturday" | |
361 | }; | |
362 | static char const month_name[][10] = | |
363 | { | |
364 | "January", "February", "March", "April", "May", "June", | |
365 | "July", "August", "September", "October", "November", "December" | |
366 | }; | |
367 | #endif | |
368 | ||
369 | ||
4b7c78fc | 370 | #ifdef emacs |
68c45bf0 PE |
371 | # define my_strftime emacs_strftimeu |
372 | # define ut_argument , ut | |
373 | # define ut_argument_spec int ut; | |
374 | # define ut_argument_spec_iso , int ut | |
4b7c78fc UD |
375 | #else |
376 | # define my_strftime strftime | |
68c45bf0 PE |
377 | # define ut_argument |
378 | # define ut_argument_spec | |
379 | # define ut_argument_spec_iso | |
380 | /* We don't have this information in general. */ | |
381 | # define ut 0 | |
4b7c78fc UD |
382 | #endif |
383 | ||
49fb5799 PE |
384 | #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET |
385 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. | |
386 | Work around this bug by copying *tp before it might be munged. */ | |
387 | size_t _strftime_copytm __P ((char *, size_t, const char *, | |
68c45bf0 | 388 | const struct tm * ut_argument_spec_iso)); |
49fb5799 | 389 | size_t |
68c45bf0 | 390 | my_strftime (s, maxsize, format, tp ut_argument) |
49fb5799 PE |
391 | char *s; |
392 | size_t maxsize; | |
393 | const char *format; | |
394 | const struct tm *tp; | |
68c45bf0 | 395 | ut_argument_spec |
49fb5799 PE |
396 | { |
397 | struct tm tmcopy; | |
398 | tmcopy = *tp; | |
68c45bf0 | 399 | return _strftime_copytm (s, maxsize, format, &tmcopy ut_argument); |
49fb5799 | 400 | } |
4b7c78fc | 401 | # undef my_strftime |
68c45bf0 | 402 | # define my_strftime _strftime_copytm |
49fb5799 PE |
403 | #endif |
404 | ||
405 | ||
406 | /* Write information from TP into S according to the format | |
407 | string FORMAT, writing no more that MAXSIZE characters | |
408 | (including the terminating '\0') and returning number of | |
409 | characters written. If S is NULL, nothing will be written | |
410 | anywhere, so to determine how many characters would be | |
411 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
412 | size_t | |
68c45bf0 | 413 | my_strftime (s, maxsize, format, tp ut_argument) |
49fb5799 PE |
414 | char *s; |
415 | size_t maxsize; | |
416 | const char *format; | |
417 | const struct tm *tp; | |
68c45bf0 | 418 | ut_argument_spec |
49fb5799 PE |
419 | { |
420 | int hour12 = tp->tm_hour; | |
421 | #ifdef _NL_CURRENT | |
68c45bf0 PE |
422 | /* We cannot make the following values variables since we must delay |
423 | the evaluation of these values until really needed since some | |
424 | expressions might not be valid in every situation. The `struct tm' | |
425 | might be generated by a strptime() call that initialized | |
426 | only a few elements. Dereference the pointers only if the format | |
427 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
428 | # define a_wkday _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday) | |
429 | # define f_wkday _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday) | |
430 | # define a_month _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon) | |
431 | # define f_month _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon) | |
432 | # define ampm _NL_CURRENT (LC_TIME, tp->tm_hour > 11 ? PM_STR : AM_STR) | |
433 | ||
434 | # define aw_len strlen (a_wkday) | |
435 | # define am_len strlen (a_month) | |
436 | # define ap_len strlen (ampm) | |
49fb5799 | 437 | #else |
4b7c78fc | 438 | # if !HAVE_STRFTIME |
68c45bf0 PE |
439 | # define f_wkday (weekday_name[tp->tm_wday]) |
440 | # define f_month (month_name[tp->tm_mon]) | |
441 | # define a_wkday f_wkday | |
442 | # define a_month f_month | |
443 | # define ampm ("AMPM" + 2 * (tp->tm_hour > 11)) | |
444 | ||
49fb5799 PE |
445 | size_t aw_len = 3; |
446 | size_t am_len = 3; | |
447 | size_t ap_len = 2; | |
4b7c78fc | 448 | # endif |
4b7c78fc | 449 | #endif |
49fb5799 | 450 | const char *zone; |
49fb5799 PE |
451 | size_t i = 0; |
452 | char *p = s; | |
453 | const char *f; | |
454 | ||
455 | zone = NULL; | |
1b65a66c PE |
456 | #if HAVE_TM_ZONE |
457 | /* The POSIX test suite assumes that setting | |
49fb5799 PE |
458 | the environment variable TZ to a new value before calling strftime() |
459 | will influence the result (the %Z format) even if the information in | |
1b65a66c PE |
460 | TP is computed with a totally different time zone. |
461 | This is bogus: though POSIX allows bad behavior like this, | |
462 | POSIX does not require it. Do the right thing instead. */ | |
49fb5799 PE |
463 | zone = (const char *) tp->tm_zone; |
464 | #endif | |
465 | #if HAVE_TZNAME | |
68c45bf0 PE |
466 | if (ut) |
467 | { | |
468 | if (! (zone && *zone)) | |
469 | zone = "GMT"; | |
470 | } | |
471 | else | |
472 | { | |
473 | /* POSIX.1 8.1.1 requires that whenever strftime() is called, the | |
474 | time zone names contained in the external variable `tzname' shall | |
475 | be set as if the tzset() function had been called. */ | |
49fb5799 | 476 | # if HAVE_TZSET |
68c45bf0 | 477 | tzset (); |
49fb5799 | 478 | # endif |
68c45bf0 | 479 | } |
49fb5799 | 480 | #endif |
49fb5799 PE |
481 | |
482 | if (hour12 > 12) | |
483 | hour12 -= 12; | |
484 | else | |
68c45bf0 PE |
485 | if (hour12 == 0) |
486 | hour12 = 12; | |
49fb5799 PE |
487 | |
488 | for (f = format; *f != '\0'; ++f) | |
489 | { | |
1823194b | 490 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
49fb5799 PE |
491 | int modifier; /* Field modifier ('E', 'O', or 0). */ |
492 | int digits; /* Max digits for numeric format. */ | |
493 | int number_value; /* Numeric value to be printed. */ | |
494 | int negative_number; /* 1 if the number is negative. */ | |
495 | const char *subfmt; | |
496 | char *bufp; | |
497 | char buf[1 + (sizeof (int) < sizeof (time_t) | |
498 | ? INT_STRLEN_BOUND (time_t) | |
499 | : INT_STRLEN_BOUND (int))]; | |
500 | int width = -1; | |
501 | int to_lowcase = 0; | |
502 | int to_uppcase = 0; | |
1b65a66c | 503 | int change_case = 0; |
4b7c78fc | 504 | int format_char; |
49fb5799 PE |
505 | |
506 | #if DO_MULTIBYTE | |
507 | ||
508 | switch (*f) | |
509 | { | |
510 | case '%': | |
511 | break; | |
512 | ||
719f38ac | 513 | case '\b': case '\t': case '\n': |
49fb5799 PE |
514 | case '\v': case '\f': case '\r': |
515 | case ' ': case '!': case '"': case '#': case '&': case'\'': | |
516 | case '(': case ')': case '*': case '+': case ',': case '-': | |
517 | case '.': case '/': case '0': case '1': case '2': case '3': | |
518 | case '4': case '5': case '6': case '7': case '8': case '9': | |
519 | case ':': case ';': case '<': case '=': case '>': case '?': | |
520 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
521 | case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
522 | case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
523 | case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
524 | case 'Y': case 'Z': case '[': case'\\': case ']': case '^': | |
525 | case '_': case 'a': case 'b': case 'c': case 'd': case 'e': | |
526 | case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': | |
527 | case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': | |
528 | case 'r': case 's': case 't': case 'u': case 'v': case 'w': | |
529 | case 'x': case 'y': case 'z': case '{': case '|': case '}': | |
530 | case '~': | |
719f38ac | 531 | /* The C Standard requires these 97 characters (plus '%', '\a') to |
49fb5799 PE |
532 | be in the basic execution character set. None of these |
533 | characters can start a multibyte sequence, so they need | |
719f38ac PE |
534 | not be analyzed further. Some old compilers object to |
535 | '\a', so don't bother optimizing for it. */ | |
49fb5799 PE |
536 | add (1, *p = *f); |
537 | continue; | |
538 | ||
539 | default: | |
540 | /* Copy this multibyte sequence until we reach its end, find | |
541 | an error, or come back to the initial shift state. */ | |
542 | { | |
543 | mbstate_t mbstate = mbstate_zero; | |
544 | size_t len = 0; | |
545 | ||
546 | do | |
547 | { | |
548 | size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); | |
549 | ||
550 | if (bytes == 0) | |
551 | break; | |
552 | ||
68c45bf0 PE |
553 | if (bytes == (size_t) -2) |
554 | { | |
555 | len += strlen (f + len); | |
556 | break; | |
557 | } | |
558 | ||
559 | if (bytes == (size_t) -1) | |
49fb5799 PE |
560 | { |
561 | len++; | |
562 | break; | |
563 | } | |
564 | ||
565 | len += bytes; | |
566 | } | |
567 | while (! mbsinit (&mbstate)); | |
568 | ||
569 | cpy (len, f); | |
68c45bf0 | 570 | f += len - 1; |
49fb5799 PE |
571 | continue; |
572 | } | |
573 | } | |
574 | ||
575 | #else /* ! DO_MULTIBYTE */ | |
576 | ||
577 | /* Either multibyte encodings are not supported, or they are | |
578 | safe for formats, so any non-'%' byte can be copied through. */ | |
579 | if (*f != '%') | |
580 | { | |
581 | add (1, *p = *f); | |
582 | continue; | |
583 | } | |
584 | ||
585 | #endif /* ! DO_MULTIBYTE */ | |
586 | ||
587 | /* Check for flags that can modify a format. */ | |
49fb5799 PE |
588 | while (1) |
589 | { | |
590 | switch (*++f) | |
591 | { | |
592 | /* This influences the number formats. */ | |
593 | case '_': | |
594 | case '-': | |
595 | case '0': | |
596 | pad = *f; | |
597 | continue; | |
598 | ||
599 | /* This changes textual output. */ | |
600 | case '^': | |
601 | to_uppcase = 1; | |
602 | continue; | |
1b65a66c PE |
603 | case '#': |
604 | change_case = 1; | |
605 | continue; | |
49fb5799 PE |
606 | |
607 | default: | |
608 | break; | |
609 | } | |
610 | break; | |
611 | } | |
612 | ||
613 | /* As a GNU extension we allow to specify the field width. */ | |
614 | if (ISDIGIT (*f)) | |
615 | { | |
616 | width = 0; | |
617 | do | |
618 | { | |
619 | width *= 10; | |
620 | width += *f - '0'; | |
621 | ++f; | |
622 | } | |
623 | while (ISDIGIT (*f)); | |
624 | } | |
625 | ||
626 | /* Check for modifiers. */ | |
627 | switch (*f) | |
628 | { | |
629 | case 'E': | |
630 | case 'O': | |
631 | modifier = *f++; | |
632 | break; | |
633 | ||
634 | default: | |
635 | modifier = 0; | |
636 | break; | |
637 | } | |
638 | ||
639 | /* Now do the specified format. */ | |
4b7c78fc UD |
640 | format_char = *f; |
641 | switch (format_char) | |
49fb5799 PE |
642 | { |
643 | #define DO_NUMBER(d, v) \ | |
1b65a66c PE |
644 | digits = width == -1 ? d : width; \ |
645 | number_value = v; goto do_number | |
49fb5799 | 646 | #define DO_NUMBER_SPACEPAD(d, v) \ |
1b65a66c PE |
647 | digits = width == -1 ? d : width; \ |
648 | number_value = v; goto do_number_spacepad | |
49fb5799 PE |
649 | |
650 | case '%': | |
651 | if (modifier != 0) | |
652 | goto bad_format; | |
653 | add (1, *p = *f); | |
654 | break; | |
655 | ||
656 | case 'a': | |
657 | if (modifier != 0) | |
658 | goto bad_format; | |
1b65a66c PE |
659 | if (change_case) |
660 | { | |
661 | to_uppcase = 1; | |
662 | to_lowcase = 0; | |
663 | } | |
4b7c78fc | 664 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
49fb5799 PE |
665 | cpy (aw_len, a_wkday); |
666 | break; | |
4b7c78fc UD |
667 | #else |
668 | goto underlying_strftime; | |
669 | #endif | |
49fb5799 PE |
670 | |
671 | case 'A': | |
672 | if (modifier != 0) | |
673 | goto bad_format; | |
1b65a66c PE |
674 | if (change_case) |
675 | { | |
676 | to_uppcase = 1; | |
677 | to_lowcase = 0; | |
678 | } | |
4b7c78fc | 679 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
68c45bf0 | 680 | cpy (strlen (f_wkday), f_wkday); |
49fb5799 | 681 | break; |
4b7c78fc UD |
682 | #else |
683 | goto underlying_strftime; | |
684 | #endif | |
49fb5799 PE |
685 | |
686 | case 'b': | |
687 | case 'h': /* POSIX.2 extension. */ | |
688 | if (modifier != 0) | |
689 | goto bad_format; | |
4b7c78fc | 690 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
49fb5799 PE |
691 | cpy (am_len, a_month); |
692 | break; | |
4b7c78fc UD |
693 | #else |
694 | goto underlying_strftime; | |
695 | #endif | |
49fb5799 PE |
696 | |
697 | case 'B': | |
698 | if (modifier != 0) | |
699 | goto bad_format; | |
1b65a66c PE |
700 | if (change_case) |
701 | { | |
702 | to_uppcase = 1; | |
703 | to_lowcase = 0; | |
704 | } | |
4b7c78fc | 705 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
68c45bf0 | 706 | cpy (strlen (f_month), f_month); |
49fb5799 | 707 | break; |
4b7c78fc UD |
708 | #else |
709 | goto underlying_strftime; | |
710 | #endif | |
49fb5799 PE |
711 | |
712 | case 'c': | |
713 | if (modifier == 'O') | |
714 | goto bad_format; | |
715 | #ifdef _NL_CURRENT | |
716 | if (! (modifier == 'E' | |
717 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0')) | |
718 | subfmt = _NL_CURRENT (LC_TIME, D_T_FMT); | |
719 | #else | |
4b7c78fc UD |
720 | # if HAVE_STRFTIME |
721 | goto underlying_strftime; | |
722 | # else | |
49fb5799 | 723 | subfmt = "%a %b %e %H:%M:%S %Y"; |
4b7c78fc | 724 | # endif |
49fb5799 PE |
725 | #endif |
726 | ||
727 | subformat: | |
728 | { | |
729 | char *old_start = p; | |
68c45bf0 PE |
730 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, |
731 | tp ut_argument); | |
732 | add (len, my_strftime (p, maxsize - i, subfmt, tp ut_argument)); | |
49fb5799 PE |
733 | |
734 | if (to_uppcase) | |
735 | while (old_start < p) | |
736 | { | |
4b7c78fc | 737 | *old_start = TOUPPER ((unsigned char) *old_start); |
49fb5799 PE |
738 | ++old_start; |
739 | } | |
740 | } | |
741 | break; | |
742 | ||
4b7c78fc UD |
743 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) |
744 | underlying_strftime: | |
745 | { | |
746 | /* The relevant information is available only via the | |
747 | underlying strftime implementation, so use that. */ | |
748 | char ufmt[4]; | |
749 | char *u = ufmt; | |
750 | char ubuf[1024]; /* enough for any single format in practice */ | |
751 | size_t len; | |
752 | *u++ = '%'; | |
753 | if (modifier != 0) | |
754 | *u++ = modifier; | |
755 | *u++ = format_char; | |
756 | *u = '\0'; | |
757 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
08b46002 | 758 | if (len == 0 && ubuf[0] != '\0') |
4b7c78fc UD |
759 | return 0; |
760 | cpy (len, ubuf); | |
761 | } | |
762 | break; | |
763 | #endif | |
764 | ||
49fb5799 PE |
765 | case 'C': /* POSIX.2 extension. */ |
766 | if (modifier == 'O') | |
767 | goto bad_format; | |
49fb5799 PE |
768 | if (modifier == 'E') |
769 | { | |
4b7c78fc | 770 | #if HAVE_STRUCT_ERA_ENTRY |
49fb5799 PE |
771 | struct era_entry *era = _nl_get_era_entry (tp); |
772 | if (era) | |
773 | { | |
774 | size_t len = strlen (era->name_fmt); | |
775 | cpy (len, era->name_fmt); | |
776 | break; | |
777 | } | |
4b7c78fc UD |
778 | #else |
779 | # if HAVE_STRFTIME | |
780 | goto underlying_strftime; | |
781 | # endif | |
49fb5799 | 782 | #endif |
4b7c78fc UD |
783 | } |
784 | ||
49fb5799 PE |
785 | { |
786 | int year = tp->tm_year + TM_YEAR_BASE; | |
787 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
788 | } | |
789 | ||
790 | case 'x': | |
791 | if (modifier == 'O') | |
792 | goto bad_format; | |
793 | #ifdef _NL_CURRENT | |
794 | if (! (modifier == 'E' | |
795 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0')) | |
796 | subfmt = _NL_CURRENT (LC_TIME, D_FMT); | |
797 | goto subformat; | |
4b7c78fc UD |
798 | #else |
799 | # if HAVE_STRFTIME | |
800 | goto underlying_strftime; | |
801 | # else | |
49fb5799 | 802 | /* Fall through. */ |
4b7c78fc UD |
803 | # endif |
804 | #endif | |
49fb5799 PE |
805 | case 'D': /* POSIX.2 extension. */ |
806 | if (modifier != 0) | |
807 | goto bad_format; | |
808 | subfmt = "%m/%d/%y"; | |
809 | goto subformat; | |
810 | ||
811 | case 'd': | |
812 | if (modifier == 'E') | |
813 | goto bad_format; | |
814 | ||
815 | DO_NUMBER (2, tp->tm_mday); | |
816 | ||
817 | case 'e': /* POSIX.2 extension. */ | |
818 | if (modifier == 'E') | |
819 | goto bad_format; | |
820 | ||
821 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); | |
822 | ||
823 | /* All numeric formats set DIGITS and NUMBER_VALUE and then | |
824 | jump to one of these two labels. */ | |
825 | ||
826 | do_number_spacepad: | |
827 | /* Force `_' flag unless overwritten by `0' flag. */ | |
828 | if (pad != '0') | |
829 | pad = '_'; | |
830 | ||
831 | do_number: | |
832 | /* Format the number according to the MODIFIER flag. */ | |
833 | ||
49fb5799 PE |
834 | if (modifier == 'O' && 0 <= number_value) |
835 | { | |
4b7c78fc | 836 | #ifdef _NL_CURRENT |
49fb5799 PE |
837 | /* Get the locale specific alternate representation of |
838 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
839 | const char *cp = _nl_get_alt_digit (number_value); | |
840 | ||
841 | if (cp != NULL) | |
842 | { | |
843 | size_t digitlen = strlen (cp); | |
844 | if (digitlen != 0) | |
845 | { | |
846 | cpy (digitlen, cp); | |
847 | break; | |
848 | } | |
849 | } | |
4b7c78fc UD |
850 | #else |
851 | # if HAVE_STRFTIME | |
852 | goto underlying_strftime; | |
853 | # endif | |
49fb5799 | 854 | #endif |
4b7c78fc | 855 | } |
49fb5799 PE |
856 | { |
857 | unsigned int u = number_value; | |
858 | ||
859 | bufp = buf + sizeof (buf); | |
860 | negative_number = number_value < 0; | |
861 | ||
862 | if (negative_number) | |
863 | u = -u; | |
864 | ||
865 | do | |
866 | *--bufp = u % 10 + '0'; | |
867 | while ((u /= 10) != 0); | |
868 | } | |
869 | ||
870 | do_number_sign_and_padding: | |
871 | if (negative_number) | |
872 | *--bufp = '-'; | |
873 | ||
874 | if (pad != '-') | |
875 | { | |
876 | int padding = digits - (buf + sizeof (buf) - bufp); | |
877 | ||
878 | if (pad == '_') | |
879 | { | |
880 | while (0 < padding--) | |
881 | *--bufp = ' '; | |
882 | } | |
883 | else | |
884 | { | |
885 | bufp += negative_number; | |
886 | while (0 < padding--) | |
887 | *--bufp = '0'; | |
888 | if (negative_number) | |
889 | *--bufp = '-'; | |
890 | } | |
891 | } | |
892 | ||
893 | cpy (buf + sizeof (buf) - bufp, bufp); | |
894 | break; | |
895 | ||
4dab1e80 UD |
896 | case 'F': |
897 | if (modifier != 0) | |
898 | goto bad_format; | |
899 | subfmt = "%Y-%m-%d"; | |
900 | goto subformat; | |
49fb5799 PE |
901 | |
902 | case 'H': | |
903 | if (modifier == 'E') | |
904 | goto bad_format; | |
905 | ||
906 | DO_NUMBER (2, tp->tm_hour); | |
907 | ||
908 | case 'I': | |
909 | if (modifier == 'E') | |
910 | goto bad_format; | |
911 | ||
912 | DO_NUMBER (2, hour12); | |
913 | ||
914 | case 'k': /* GNU extension. */ | |
915 | if (modifier == 'E') | |
916 | goto bad_format; | |
917 | ||
918 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
919 | ||
920 | case 'l': /* GNU extension. */ | |
921 | if (modifier == 'E') | |
922 | goto bad_format; | |
923 | ||
924 | DO_NUMBER_SPACEPAD (2, hour12); | |
925 | ||
926 | case 'j': | |
927 | if (modifier == 'E') | |
928 | goto bad_format; | |
929 | ||
930 | DO_NUMBER (3, 1 + tp->tm_yday); | |
931 | ||
932 | case 'M': | |
933 | if (modifier == 'E') | |
934 | goto bad_format; | |
935 | ||
936 | DO_NUMBER (2, tp->tm_min); | |
937 | ||
938 | case 'm': | |
939 | if (modifier == 'E') | |
940 | goto bad_format; | |
941 | ||
942 | DO_NUMBER (2, tp->tm_mon + 1); | |
943 | ||
944 | case 'n': /* POSIX.2 extension. */ | |
945 | add (1, *p = '\n'); | |
946 | break; | |
947 | ||
948 | case 'P': | |
949 | to_lowcase = 1; | |
4b7c78fc UD |
950 | #if !defined _NL_CURRENT && HAVE_STRFTIME |
951 | format_char = 'p'; | |
952 | #endif | |
49fb5799 PE |
953 | /* FALLTHROUGH */ |
954 | ||
955 | case 'p': | |
1b65a66c PE |
956 | if (change_case) |
957 | { | |
958 | to_uppcase = 0; | |
959 | to_lowcase = 1; | |
960 | } | |
4b7c78fc | 961 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
49fb5799 PE |
962 | cpy (ap_len, ampm); |
963 | break; | |
4b7c78fc UD |
964 | #else |
965 | goto underlying_strftime; | |
966 | #endif | |
49fb5799 PE |
967 | |
968 | case 'R': /* GNU extension. */ | |
969 | subfmt = "%H:%M"; | |
970 | goto subformat; | |
971 | ||
972 | case 'r': /* POSIX.2 extension. */ | |
973 | #ifdef _NL_CURRENT | |
974 | if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0') | |
975 | #endif | |
976 | subfmt = "%I:%M:%S %p"; | |
977 | goto subformat; | |
978 | ||
979 | case 'S': | |
980 | if (modifier == 'E') | |
981 | goto bad_format; | |
982 | ||
983 | DO_NUMBER (2, tp->tm_sec); | |
984 | ||
985 | case 's': /* GNU extension. */ | |
986 | { | |
987 | struct tm ltm; | |
988 | time_t t; | |
989 | ||
990 | ltm = *tp; | |
991 | t = mktime (<m); | |
992 | ||
993 | /* Generate string value for T using time_t arithmetic; | |
994 | this works even if sizeof (long) < sizeof (time_t). */ | |
995 | ||
996 | bufp = buf + sizeof (buf); | |
997 | negative_number = t < 0; | |
998 | ||
999 | do | |
1000 | { | |
1001 | int d = t % 10; | |
1002 | t /= 10; | |
1003 | ||
1004 | if (negative_number) | |
1005 | { | |
1006 | d = -d; | |
1007 | ||
1008 | /* Adjust if division truncates to minus infinity. */ | |
1009 | if (0 < -1 % 10 && d < 0) | |
1010 | { | |
1011 | t++; | |
1012 | d += 10; | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | *--bufp = d + '0'; | |
1017 | } | |
1018 | while (t != 0); | |
1019 | ||
1020 | digits = 1; | |
1021 | goto do_number_sign_and_padding; | |
1022 | } | |
1023 | ||
1024 | case 'X': | |
1025 | if (modifier == 'O') | |
1026 | goto bad_format; | |
1027 | #ifdef _NL_CURRENT | |
1028 | if (! (modifier == 'E' | |
1029 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0')) | |
1030 | subfmt = _NL_CURRENT (LC_TIME, T_FMT); | |
1031 | goto subformat; | |
4b7c78fc UD |
1032 | #else |
1033 | # if HAVE_STRFTIME | |
1034 | goto underlying_strftime; | |
1035 | # else | |
49fb5799 | 1036 | /* Fall through. */ |
4b7c78fc UD |
1037 | # endif |
1038 | #endif | |
49fb5799 PE |
1039 | case 'T': /* POSIX.2 extension. */ |
1040 | subfmt = "%H:%M:%S"; | |
1041 | goto subformat; | |
1042 | ||
1043 | case 't': /* POSIX.2 extension. */ | |
1044 | add (1, *p = '\t'); | |
1045 | break; | |
1046 | ||
1047 | case 'u': /* POSIX.2 extension. */ | |
1048 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1049 | ||
1050 | case 'U': | |
1051 | if (modifier == 'E') | |
1052 | goto bad_format; | |
1053 | ||
1054 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1055 | ||
1056 | case 'V': | |
1057 | case 'g': /* GNU extension. */ | |
1058 | case 'G': /* GNU extension. */ | |
1059 | if (modifier == 'E') | |
1060 | goto bad_format; | |
1061 | { | |
1062 | int year = tp->tm_year + TM_YEAR_BASE; | |
1063 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1064 | ||
1065 | if (days < 0) | |
1066 | { | |
1067 | /* This ISO week belongs to the previous year. */ | |
1068 | year--; | |
1069 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
1070 | tp->tm_wday); | |
1071 | } | |
1072 | else | |
1073 | { | |
1074 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1075 | tp->tm_wday); | |
1076 | if (0 <= d) | |
1077 | { | |
1078 | /* This ISO week belongs to the next year. */ | |
1079 | year++; | |
1080 | days = d; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | switch (*f) | |
1085 | { | |
1086 | case 'g': | |
1087 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
1088 | ||
1089 | case 'G': | |
1090 | DO_NUMBER (1, year); | |
1091 | ||
1092 | default: | |
1093 | DO_NUMBER (2, days / 7 + 1); | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | case 'W': | |
1098 | if (modifier == 'E') | |
1099 | goto bad_format; | |
1100 | ||
1101 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1102 | ||
1103 | case 'w': | |
1104 | if (modifier == 'E') | |
1105 | goto bad_format; | |
1106 | ||
1107 | DO_NUMBER (1, tp->tm_wday); | |
1108 | ||
1109 | case 'Y': | |
49fb5799 PE |
1110 | if (modifier == 'E') |
1111 | { | |
4b7c78fc | 1112 | #if HAVE_STRUCT_ERA_ENTRY |
49fb5799 PE |
1113 | struct era_entry *era = _nl_get_era_entry (tp); |
1114 | if (era) | |
1115 | { | |
1116 | subfmt = strchr (era->name_fmt, '\0') + 1; | |
1117 | goto subformat; | |
1118 | } | |
4b7c78fc UD |
1119 | #else |
1120 | # if HAVE_STRFTIME | |
1121 | goto underlying_strftime; | |
1122 | # endif | |
49fb5799 | 1123 | #endif |
4b7c78fc | 1124 | } |
49fb5799 PE |
1125 | if (modifier == 'O') |
1126 | goto bad_format; | |
1127 | else | |
1128 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
1129 | ||
1130 | case 'y': | |
49fb5799 PE |
1131 | if (modifier == 'E') |
1132 | { | |
4b7c78fc | 1133 | #if HAVE_STRUCT_ERA_ENTRY |
49fb5799 PE |
1134 | struct era_entry *era = _nl_get_era_entry (tp); |
1135 | if (era) | |
1136 | { | |
1137 | int delta = tp->tm_year - era->start_date[0]; | |
1138 | DO_NUMBER (1, (era->offset | |
1139 | + (era->direction == '-' ? -delta : delta))); | |
1140 | } | |
4b7c78fc UD |
1141 | #else |
1142 | # if HAVE_STRFTIME | |
1143 | goto underlying_strftime; | |
1144 | # endif | |
49fb5799 | 1145 | #endif |
4b7c78fc | 1146 | } |
49fb5799 PE |
1147 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); |
1148 | ||
1149 | case 'Z': | |
1b65a66c PE |
1150 | if (change_case) |
1151 | { | |
1152 | to_uppcase = 0; | |
1153 | to_lowcase = 1; | |
1154 | } | |
68c45bf0 PE |
1155 | |
1156 | #if HAVE_TZNAME | |
1157 | /* The tzset() call might have changed the value. */ | |
1158 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1159 | zone = tzname[tp->tm_isdst]; | |
1160 | #endif | |
1161 | if (! zone) | |
1162 | zone = ""; /* POSIX.2 requires the empty string here. */ | |
1163 | ||
1164 | cpy (strlen (zone), zone); | |
49fb5799 PE |
1165 | break; |
1166 | ||
1167 | case 'z': /* GNU extension. */ | |
1168 | if (tp->tm_isdst < 0) | |
1169 | break; | |
1170 | ||
1171 | { | |
1172 | int diff; | |
1173 | #if HAVE_TM_GMTOFF | |
1174 | diff = tp->tm_gmtoff; | |
1175 | #else | |
68c45bf0 PE |
1176 | if (ut) |
1177 | diff = 0; | |
1178 | else | |
1179 | { | |
1180 | struct tm gtm; | |
1181 | struct tm ltm; | |
1182 | time_t lt; | |
49fb5799 | 1183 | |
68c45bf0 PE |
1184 | ltm = *tp; |
1185 | lt = mktime (<m); | |
49fb5799 | 1186 | |
68c45bf0 PE |
1187 | if (lt == (time_t) -1) |
1188 | { | |
1189 | /* mktime returns -1 for errors, but -1 is also a | |
1190 | valid time_t value. Check whether an error really | |
1191 | occurred. */ | |
1192 | struct tm tm; | |
1193 | ||
1194 | if (! my_strftime_localtime_r (<, &tm) | |
1195 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1196 | | (ltm.tm_min ^ tm.tm_min) | |
1197 | | (ltm.tm_hour ^ tm.tm_hour) | |
1198 | | (ltm.tm_mday ^ tm.tm_mday) | |
1199 | | (ltm.tm_mon ^ tm.tm_mon) | |
1200 | | (ltm.tm_year ^ tm.tm_year))) | |
1201 | break; | |
1202 | } | |
49fb5799 | 1203 | |
68c45bf0 PE |
1204 | if (! my_strftime_gmtime_r (<, >m)) |
1205 | break; | |
49fb5799 | 1206 | |
68c45bf0 PE |
1207 | diff = tm_diff (<m, >m); |
1208 | } | |
49fb5799 PE |
1209 | #endif |
1210 | ||
1211 | if (diff < 0) | |
1212 | { | |
1213 | add (1, *p = '-'); | |
1214 | diff = -diff; | |
1215 | } | |
1216 | else | |
1217 | add (1, *p = '+'); | |
1218 | ||
1219 | diff /= 60; | |
1220 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
1221 | } | |
1222 | ||
1223 | case '\0': /* GNU extension: % at end of format. */ | |
1224 | --f; | |
1225 | /* Fall through. */ | |
1226 | default: | |
1227 | /* Unknown format; output the format, including the '%', | |
1228 | since this is most likely the right thing to do if a | |
1229 | multibyte string has been misparsed. */ | |
1230 | bad_format: | |
1231 | { | |
1232 | int flen; | |
1233 | for (flen = 1; f[1 - flen] != '%'; flen++) | |
1234 | continue; | |
1235 | cpy (flen, &f[1 - flen]); | |
1236 | } | |
1237 | break; | |
1238 | } | |
1239 | } | |
1240 | ||
68c45bf0 | 1241 | if (p && maxsize != 0) |
49fb5799 PE |
1242 | *p = '\0'; |
1243 | return i; | |
1244 | } |