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f240aacb | 1 | /* Copyright (C) 1991-1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2009 Free Software |
e65fc94b LC |
2 | Foundation, Inc. |
3 | ||
4 | NOTE: The canonical source of this file is maintained with the GNU C Library. | |
5 | Bugs can be reported to bug-glibc@prep.ai.mit.edu. | |
6 | ||
7 | This program is free software: you can redistribute it and/or modify | |
8 | it under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifdef _LIBC | |
e65fc94b LC |
21 | # define HAVE_STRUCT_ERA_ENTRY 1 |
22 | # define HAVE_TM_GMTOFF 1 | |
23 | # define HAVE_TM_ZONE 1 | |
24 | # define HAVE_TZNAME 1 | |
25 | # define HAVE_TZSET 1 | |
e65fc94b LC |
26 | # include "../locale/localeinfo.h" |
27 | #else | |
28 | # include <config.h> | |
29 | # if FPRINTFTIME | |
f29ded4b | 30 | # include "ignore-value.h" |
e65fc94b | 31 | # include "fprintftime.h" |
f240aacb LC |
32 | # else |
33 | # include "strftime.h" | |
e65fc94b LC |
34 | # endif |
35 | #endif | |
36 | ||
37 | #include <ctype.h> | |
38 | #include <time.h> | |
39 | ||
40 | #if HAVE_TZNAME && !HAVE_DECL_TZNAME | |
41 | extern char *tzname[]; | |
42 | #endif | |
43 | ||
44 | /* Do multibyte processing if multibytes are supported, unless | |
45 | multibyte sequences are safe in formats. Multibyte sequences are | |
46 | safe if they cannot contain byte sequences that look like format | |
f240aacb LC |
47 | conversion specifications. The multibyte encodings used by the |
48 | C library on the various platforms (UTF-8, GB2312, GBK, CP936, | |
49 | GB18030, EUC-TW, BIG5, BIG5-HKSCS, CP950, EUC-JP, EUC-KR, CP949, | |
50 | SHIFT_JIS, CP932, JOHAB) are safe for formats, because the byte '%' | |
51 | cannot occur in a multibyte character except in the first byte. | |
52 | But this does not hold for the DEC-HANYU encoding used on OSF/1. */ | |
53 | #if !defined __osf__ | |
54 | # define MULTIBYTE_IS_FORMAT_SAFE 1 | |
55 | #endif | |
56 | #define DO_MULTIBYTE (! MULTIBYTE_IS_FORMAT_SAFE) | |
e65fc94b LC |
57 | |
58 | #if DO_MULTIBYTE | |
4a462e35 | 59 | # include <wchar.h> |
e65fc94b LC |
60 | static const mbstate_t mbstate_zero; |
61 | #endif | |
62 | ||
63 | #include <limits.h> | |
64 | #include <stdbool.h> | |
65 | #include <stddef.h> | |
66 | #include <stdlib.h> | |
67 | #include <string.h> | |
68 | ||
69 | #ifdef COMPILE_WIDE | |
70 | # include <endian.h> | |
71 | # define CHAR_T wchar_t | |
72 | # define UCHAR_T unsigned int | |
73 | # define L_(Str) L##Str | |
74 | # define NLW(Sym) _NL_W##Sym | |
75 | ||
76 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
77 | # define STRLEN(s) __wcslen (s) | |
78 | ||
79 | #else | |
80 | # define CHAR_T char | |
81 | # define UCHAR_T unsigned char | |
82 | # define L_(Str) Str | |
83 | # define NLW(Sym) Sym | |
84 | ||
85 | # define MEMCPY(d, s, n) memcpy (d, s, n) | |
86 | # define STRLEN(s) strlen (s) | |
87 | ||
e65fc94b LC |
88 | #endif |
89 | ||
90 | /* Shift A right by B bits portably, by dividing A by 2**B and | |
91 | truncating towards minus infinity. A and B should be free of side | |
92 | effects, and B should be in the range 0 <= B <= INT_BITS - 2, where | |
93 | INT_BITS is the number of useful bits in an int. GNU code can | |
94 | assume that INT_BITS is at least 32. | |
95 | ||
96 | ISO C99 says that A >> B is implementation-defined if A < 0. Some | |
97 | implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift | |
98 | right in the usual way when A < 0, so SHR falls back on division if | |
99 | ordinary A >> B doesn't seem to be the usual signed shift. */ | |
1cd4fffc LC |
100 | #define SHR(a, b) \ |
101 | (-1 >> 1 == -1 \ | |
102 | ? (a) >> (b) \ | |
e65fc94b LC |
103 | : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) |
104 | ||
105 | /* Bound on length of the string representing an integer type or expression T. | |
106 | Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485; | |
107 | add 1 for integer division truncation; add 1 more for a minus sign | |
108 | if needed. */ | |
109 | #define INT_STRLEN_BOUND(t) \ | |
110 | ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2) | |
111 | ||
112 | #define TM_YEAR_BASE 1900 | |
113 | ||
114 | #ifndef __isleap | |
115 | /* Nonzero if YEAR is a leap year (every 4 years, | |
116 | except every 100th isn't, and every 400th is). */ | |
1cd4fffc | 117 | # define __isleap(year) \ |
e65fc94b LC |
118 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
119 | #endif | |
120 | ||
121 | ||
122 | #ifdef _LIBC | |
123 | # define tzname __tzname | |
124 | # define tzset __tzset | |
125 | #endif | |
126 | ||
127 | #if !HAVE_TM_GMTOFF | |
128 | /* Portable standalone applications should supply a "time.h" that | |
129 | declares a POSIX-compliant localtime_r, for the benefit of older | |
130 | implementations that lack localtime_r or have a nonstandard one. | |
131 | See the gnulib time_r module for one way to implement this. */ | |
132 | # undef __gmtime_r | |
133 | # undef __localtime_r | |
134 | # define __gmtime_r gmtime_r | |
135 | # define __localtime_r localtime_r | |
136 | #endif | |
137 | ||
138 | ||
139 | #ifndef FPRINTFTIME | |
140 | # define FPRINTFTIME 0 | |
141 | #endif | |
142 | ||
143 | #if FPRINTFTIME | |
144 | # define STREAM_OR_CHAR_T FILE | |
145 | # define STRFTIME_ARG(x) /* empty */ | |
146 | #else | |
147 | # define STREAM_OR_CHAR_T CHAR_T | |
148 | # define STRFTIME_ARG(x) x, | |
149 | #endif | |
150 | ||
151 | #if FPRINTFTIME | |
152 | # define memset_byte(P, Len, Byte) \ | |
153 | do { size_t _i; for (_i = 0; _i < Len; _i++) fputc (Byte, P); } while (0) | |
154 | # define memset_space(P, Len) memset_byte (P, Len, ' ') | |
155 | # define memset_zero(P, Len) memset_byte (P, Len, '0') | |
156 | #elif defined COMPILE_WIDE | |
157 | # define memset_space(P, Len) (wmemset (P, L' ', Len), (P) += (Len)) | |
158 | # define memset_zero(P, Len) (wmemset (P, L'0', Len), (P) += (Len)) | |
159 | #else | |
160 | # define memset_space(P, Len) (memset (P, ' ', Len), (P) += (Len)) | |
161 | # define memset_zero(P, Len) (memset (P, '0', Len), (P) += (Len)) | |
162 | #endif | |
163 | ||
164 | #if FPRINTFTIME | |
165 | # define advance(P, N) | |
166 | #else | |
167 | # define advance(P, N) ((P) += (N)) | |
168 | #endif | |
169 | ||
1cd4fffc LC |
170 | #define add(n, f) \ |
171 | do \ | |
172 | { \ | |
173 | int _n = (n); \ | |
174 | int _delta = width - _n; \ | |
175 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
176 | if ((size_t) _incr >= maxsize - i) \ | |
177 | return 0; \ | |
178 | if (p) \ | |
179 | { \ | |
180 | if (digits == 0 && _delta > 0) \ | |
181 | { \ | |
182 | if (pad == L_('0')) \ | |
183 | memset_zero (p, _delta); \ | |
184 | else \ | |
185 | memset_space (p, _delta); \ | |
186 | } \ | |
187 | f; \ | |
188 | advance (p, _n); \ | |
189 | } \ | |
190 | i += _incr; \ | |
e65fc94b LC |
191 | } while (0) |
192 | ||
193 | #if FPRINTFTIME | |
194 | # define add1(C) add (1, fputc (C, p)) | |
195 | #else | |
196 | # define add1(C) add (1, *p = C) | |
197 | #endif | |
198 | ||
199 | #if FPRINTFTIME | |
200 | # define cpy(n, s) \ | |
1cd4fffc LC |
201 | add ((n), \ |
202 | do \ | |
203 | { \ | |
204 | if (to_lowcase) \ | |
205 | fwrite_lowcase (p, (s), _n); \ | |
206 | else if (to_uppcase) \ | |
207 | fwrite_uppcase (p, (s), _n); \ | |
208 | else \ | |
209 | { \ | |
210 | /* We are ignoring the value of fwrite here, in spite of the \ | |
211 | fact that technically, that may not be valid: the fwrite \ | |
212 | specification in POSIX 2008 defers to that of fputc, which \ | |
213 | is intended to be consistent with the one from ISO C, \ | |
214 | which permits failure due to ENOMEM *without* setting the \ | |
215 | stream's error indicator. */ \ | |
216 | ignore_value (fwrite ((s), _n, 1, p)); \ | |
217 | } \ | |
218 | } \ | |
219 | while (0) \ | |
8912421c | 220 | ) |
e65fc94b | 221 | #else |
1cd4fffc LC |
222 | # define cpy(n, s) \ |
223 | add ((n), \ | |
224 | if (to_lowcase) \ | |
225 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ | |
226 | else if (to_uppcase) \ | |
227 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ | |
228 | else \ | |
229 | MEMCPY ((void *) p, (void const *) (s), _n)) | |
e65fc94b LC |
230 | #endif |
231 | ||
232 | #ifdef COMPILE_WIDE | |
233 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL | |
234 | # undef __mbsrtowcs_l | |
235 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) | |
236 | # endif | |
237 | # define widen(os, ws, l) \ | |
1cd4fffc LC |
238 | { \ |
239 | mbstate_t __st; \ | |
240 | const char *__s = os; \ | |
241 | memset (&__st, '\0', sizeof (__st)); \ | |
242 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ | |
243 | ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \ | |
244 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ | |
e65fc94b LC |
245 | } |
246 | #endif | |
247 | ||
248 | ||
249 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
250 | /* We use this code also for the extended locale handling where the | |
251 | function gets as an additional argument the locale which has to be | |
252 | used. To access the values we have to redefine the _NL_CURRENT | |
253 | macro. */ | |
1cd4fffc LC |
254 | # define strftime __strftime_l |
255 | # define wcsftime __wcsftime_l | |
e65fc94b LC |
256 | # undef _NL_CURRENT |
257 | # define _NL_CURRENT(category, item) \ | |
258 | (current->values[_NL_ITEM_INDEX (item)].string) | |
259 | # define LOCALE_ARG , loc | |
260 | # define LOCALE_PARAM_PROTO , __locale_t loc | |
261 | # define HELPER_LOCALE_ARG , current | |
262 | #else | |
263 | # define LOCALE_PARAM_PROTO | |
264 | # define LOCALE_ARG | |
265 | # ifdef _LIBC | |
266 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) | |
267 | # else | |
268 | # define HELPER_LOCALE_ARG | |
269 | # endif | |
270 | #endif | |
271 | ||
272 | #ifdef COMPILE_WIDE | |
273 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
274 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) | |
275 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) | |
276 | # else | |
277 | # define TOUPPER(Ch, L) towupper (Ch) | |
278 | # define TOLOWER(Ch, L) towlower (Ch) | |
279 | # endif | |
280 | #else | |
281 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
282 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) | |
283 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) | |
284 | # else | |
285 | # define TOUPPER(Ch, L) toupper (Ch) | |
286 | # define TOLOWER(Ch, L) tolower (Ch) | |
287 | # endif | |
288 | #endif | |
289 | /* We don't use `isdigit' here since the locale dependent | |
290 | interpretation is not what we want here. We only need to accept | |
291 | the arabic digits in the ASCII range. One day there is perhaps a | |
292 | more reliable way to accept other sets of digits. */ | |
293 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) | |
294 | ||
295 | #if FPRINTFTIME | |
296 | static void | |
297 | fwrite_lowcase (FILE *fp, const CHAR_T *src, size_t len) | |
298 | { | |
299 | while (len-- > 0) | |
300 | { | |
301 | fputc (TOLOWER ((UCHAR_T) *src, loc), fp); | |
302 | ++src; | |
303 | } | |
304 | } | |
305 | ||
306 | static void | |
307 | fwrite_uppcase (FILE *fp, const CHAR_T *src, size_t len) | |
308 | { | |
309 | while (len-- > 0) | |
310 | { | |
311 | fputc (TOUPPER ((UCHAR_T) *src, loc), fp); | |
312 | ++src; | |
313 | } | |
314 | } | |
315 | #else | |
316 | static CHAR_T * | |
317 | memcpy_lowcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 318 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
319 | { |
320 | while (len-- > 0) | |
321 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); | |
322 | return dest; | |
323 | } | |
324 | ||
325 | static CHAR_T * | |
326 | memcpy_uppcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 327 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
328 | { |
329 | while (len-- > 0) | |
330 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); | |
331 | return dest; | |
332 | } | |
333 | #endif | |
334 | ||
335 | ||
336 | #if ! HAVE_TM_GMTOFF | |
337 | /* Yield the difference between *A and *B, | |
338 | measured in seconds, ignoring leap seconds. */ | |
339 | # define tm_diff ftime_tm_diff | |
340 | static int | |
341 | tm_diff (const struct tm *a, const struct tm *b) | |
342 | { | |
343 | /* Compute intervening leap days correctly even if year is negative. | |
344 | Take care to avoid int overflow in leap day calculations, | |
345 | but it's OK to assume that A and B are close to each other. */ | |
346 | int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); | |
347 | int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); | |
348 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
349 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
350 | int a400 = SHR (a100, 2); | |
351 | int b400 = SHR (b100, 2); | |
352 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
353 | int years = a->tm_year - b->tm_year; | |
354 | int days = (365 * years + intervening_leap_days | |
1cd4fffc | 355 | + (a->tm_yday - b->tm_yday)); |
e65fc94b | 356 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
1cd4fffc LC |
357 | + (a->tm_min - b->tm_min)) |
358 | + (a->tm_sec - b->tm_sec)); | |
e65fc94b LC |
359 | } |
360 | #endif /* ! HAVE_TM_GMTOFF */ | |
361 | ||
362 | ||
363 | ||
364 | /* The number of days from the first day of the first ISO week of this | |
365 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
366 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
367 | be as small as YDAY_MINIMUM. */ | |
368 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
369 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
370 | #define YDAY_MINIMUM (-366) | |
371 | #ifdef __GNUC__ | |
372 | __inline__ | |
373 | #endif | |
374 | static int | |
375 | iso_week_days (int yday, int wday) | |
376 | { | |
377 | /* Add enough to the first operand of % to make it nonnegative. */ | |
378 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
379 | return (yday | |
1cd4fffc LC |
380 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
381 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
e65fc94b LC |
382 | } |
383 | ||
384 | ||
385 | /* When compiling this file, GNU applications can #define my_strftime | |
386 | to a symbol (typically nstrftime) to get an extended strftime with | |
387 | extra arguments UT and NS. Emacs is a special case for now, but | |
388 | this Emacs-specific code can be removed once Emacs's config.h | |
389 | defines my_strftime. */ | |
390 | #if defined emacs && !defined my_strftime | |
391 | # define my_strftime nstrftime | |
392 | #endif | |
393 | ||
394 | #if FPRINTFTIME | |
395 | # undef my_strftime | |
396 | # define my_strftime fprintftime | |
397 | #endif | |
398 | ||
399 | #ifdef my_strftime | |
400 | # define extra_args , ut, ns | |
401 | # define extra_args_spec , int ut, int ns | |
402 | #else | |
403 | # if defined COMPILE_WIDE | |
404 | # define my_strftime wcsftime | |
405 | # define nl_get_alt_digit _nl_get_walt_digit | |
406 | # else | |
407 | # define my_strftime strftime | |
408 | # define nl_get_alt_digit _nl_get_alt_digit | |
409 | # endif | |
410 | # define extra_args | |
411 | # define extra_args_spec | |
412 | /* We don't have this information in general. */ | |
413 | # define ut 0 | |
414 | # define ns 0 | |
415 | #endif | |
416 | ||
417 | ||
418 | /* Just like my_strftime, below, but with one more parameter, UPCASE, | |
419 | to indicate that the result should be converted to upper case. */ | |
420 | static size_t | |
421 | strftime_case_ (bool upcase, STREAM_OR_CHAR_T *s, | |
1cd4fffc LC |
422 | STRFTIME_ARG (size_t maxsize) |
423 | const CHAR_T *format, | |
424 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
425 | { |
426 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
427 | struct locale_data *const current = loc->__locales[LC_TIME]; | |
428 | #endif | |
429 | #if FPRINTFTIME | |
430 | size_t maxsize = (size_t) -1; | |
431 | #endif | |
432 | ||
433 | int hour12 = tp->tm_hour; | |
434 | #ifdef _NL_CURRENT | |
435 | /* We cannot make the following values variables since we must delay | |
436 | the evaluation of these values until really needed since some | |
437 | expressions might not be valid in every situation. The `struct tm' | |
438 | might be generated by a strptime() call that initialized | |
439 | only a few elements. Dereference the pointers only if the format | |
440 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
441 | # define a_wkday \ | |
442 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
443 | # define f_wkday \ | |
444 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
445 | # define a_month \ | |
446 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
447 | # define f_month \ | |
448 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
449 | # define ampm \ | |
1cd4fffc LC |
450 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ |
451 | ? NLW(PM_STR) : NLW(AM_STR))) | |
e65fc94b LC |
452 | |
453 | # define aw_len STRLEN (a_wkday) | |
454 | # define am_len STRLEN (a_month) | |
455 | # define ap_len STRLEN (ampm) | |
456 | #endif | |
457 | const char *zone; | |
458 | size_t i = 0; | |
459 | STREAM_OR_CHAR_T *p = s; | |
460 | const CHAR_T *f; | |
461 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
462 | const char *format_end = NULL; | |
463 | #endif | |
464 | ||
465 | #if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST | |
466 | /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned | |
467 | by localtime. On such systems, we must either use the tzset and | |
468 | localtime wrappers to work around the bug (which sets | |
469 | HAVE_RUN_TZSET_TEST) or make a copy of the structure. */ | |
470 | struct tm copy = *tp; | |
471 | tp = © | |
472 | #endif | |
473 | ||
474 | zone = NULL; | |
475 | #if HAVE_TM_ZONE | |
476 | /* The POSIX test suite assumes that setting | |
477 | the environment variable TZ to a new value before calling strftime() | |
478 | will influence the result (the %Z format) even if the information in | |
479 | TP is computed with a totally different time zone. | |
480 | This is bogus: though POSIX allows bad behavior like this, | |
481 | POSIX does not require it. Do the right thing instead. */ | |
482 | zone = (const char *) tp->tm_zone; | |
483 | #endif | |
484 | #if HAVE_TZNAME | |
485 | if (ut) | |
486 | { | |
487 | if (! (zone && *zone)) | |
1cd4fffc | 488 | zone = "GMT"; |
e65fc94b LC |
489 | } |
490 | else | |
491 | { | |
492 | /* POSIX.1 requires that local time zone information be used as | |
1cd4fffc | 493 | though strftime called tzset. */ |
e65fc94b LC |
494 | # if HAVE_TZSET |
495 | tzset (); | |
496 | # endif | |
497 | } | |
498 | #endif | |
499 | ||
500 | if (hour12 > 12) | |
501 | hour12 -= 12; | |
502 | else | |
503 | if (hour12 == 0) | |
504 | hour12 = 12; | |
505 | ||
506 | for (f = format; *f != '\0'; ++f) | |
507 | { | |
1cd4fffc LC |
508 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
509 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
510 | int digits = 0; /* Max digits for numeric format. */ | |
511 | int number_value; /* Numeric value to be printed. */ | |
e65fc94b | 512 | unsigned int u_number_value; /* (unsigned int) number_value. */ |
1cd4fffc | 513 | bool negative_number; /* The number is negative. */ |
e65fc94b | 514 | bool always_output_a_sign; /* +/- should always be output. */ |
1cd4fffc | 515 | int tz_colon_mask; /* Bitmask of where ':' should appear. */ |
e65fc94b LC |
516 | const CHAR_T *subfmt; |
517 | CHAR_T sign_char; | |
518 | CHAR_T *bufp; | |
519 | CHAR_T buf[1 | |
1cd4fffc LC |
520 | + 2 /* for the two colons in a %::z or %:::z time zone */ |
521 | + (sizeof (int) < sizeof (time_t) | |
522 | ? INT_STRLEN_BOUND (time_t) | |
523 | : INT_STRLEN_BOUND (int))]; | |
e65fc94b LC |
524 | int width = -1; |
525 | bool to_lowcase = false; | |
526 | bool to_uppcase = upcase; | |
527 | size_t colons; | |
528 | bool change_case = false; | |
529 | int format_char; | |
530 | ||
531 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
532 | switch (*f) | |
1cd4fffc LC |
533 | { |
534 | case L_('%'): | |
535 | break; | |
536 | ||
537 | case L_('\b'): case L_('\t'): case L_('\n'): | |
538 | case L_('\v'): case L_('\f'): case L_('\r'): | |
539 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
540 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
541 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
542 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
543 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
544 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
545 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
546 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
547 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
548 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
549 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
550 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
551 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
552 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
553 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
554 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
555 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
556 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
557 | case L_('~'): | |
558 | /* The C Standard requires these 98 characters (plus '%') to | |
559 | be in the basic execution character set. None of these | |
560 | characters can start a multibyte sequence, so they need | |
561 | not be analyzed further. */ | |
562 | add1 (*f); | |
563 | continue; | |
564 | ||
565 | default: | |
566 | /* Copy this multibyte sequence until we reach its end, find | |
567 | an error, or come back to the initial shift state. */ | |
568 | { | |
569 | mbstate_t mbstate = mbstate_zero; | |
570 | size_t len = 0; | |
571 | size_t fsize; | |
572 | ||
573 | if (! format_end) | |
574 | format_end = f + strlen (f) + 1; | |
575 | fsize = format_end - f; | |
576 | ||
577 | do | |
578 | { | |
579 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); | |
580 | ||
581 | if (bytes == 0) | |
582 | break; | |
583 | ||
584 | if (bytes == (size_t) -2) | |
585 | { | |
586 | len += strlen (f + len); | |
587 | break; | |
588 | } | |
589 | ||
590 | if (bytes == (size_t) -1) | |
591 | { | |
592 | len++; | |
593 | break; | |
594 | } | |
595 | ||
596 | len += bytes; | |
597 | } | |
598 | while (! mbsinit (&mbstate)); | |
599 | ||
600 | cpy (len, f); | |
601 | f += len - 1; | |
602 | continue; | |
603 | } | |
604 | } | |
e65fc94b LC |
605 | |
606 | #else /* ! DO_MULTIBYTE */ | |
607 | ||
608 | /* Either multibyte encodings are not supported, they are | |
1cd4fffc LC |
609 | safe for formats, so any non-'%' byte can be copied through, |
610 | or this is the wide character version. */ | |
e65fc94b | 611 | if (*f != L_('%')) |
1cd4fffc LC |
612 | { |
613 | add1 (*f); | |
614 | continue; | |
615 | } | |
e65fc94b LC |
616 | |
617 | #endif /* ! DO_MULTIBYTE */ | |
618 | ||
619 | /* Check for flags that can modify a format. */ | |
620 | while (1) | |
1cd4fffc LC |
621 | { |
622 | switch (*++f) | |
623 | { | |
624 | /* This influences the number formats. */ | |
625 | case L_('_'): | |
626 | case L_('-'): | |
627 | case L_('0'): | |
628 | pad = *f; | |
629 | continue; | |
630 | ||
631 | /* This changes textual output. */ | |
632 | case L_('^'): | |
633 | to_uppcase = true; | |
634 | continue; | |
635 | case L_('#'): | |
636 | change_case = true; | |
637 | continue; | |
638 | ||
639 | default: | |
640 | break; | |
641 | } | |
642 | break; | |
643 | } | |
e65fc94b LC |
644 | |
645 | /* As a GNU extension we allow to specify the field width. */ | |
646 | if (ISDIGIT (*f)) | |
1cd4fffc LC |
647 | { |
648 | width = 0; | |
649 | do | |
650 | { | |
651 | if (width > INT_MAX / 10 | |
652 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) | |
653 | /* Avoid overflow. */ | |
654 | width = INT_MAX; | |
655 | else | |
656 | { | |
657 | width *= 10; | |
658 | width += *f - L_('0'); | |
659 | } | |
660 | ++f; | |
661 | } | |
662 | while (ISDIGIT (*f)); | |
663 | } | |
e65fc94b LC |
664 | |
665 | /* Check for modifiers. */ | |
666 | switch (*f) | |
1cd4fffc LC |
667 | { |
668 | case L_('E'): | |
669 | case L_('O'): | |
670 | modifier = *f++; | |
671 | break; | |
e65fc94b | 672 | |
1cd4fffc LC |
673 | default: |
674 | modifier = 0; | |
675 | break; | |
676 | } | |
e65fc94b LC |
677 | |
678 | /* Now do the specified format. */ | |
679 | format_char = *f; | |
680 | switch (format_char) | |
1cd4fffc | 681 | { |
e65fc94b | 682 | #define DO_NUMBER(d, v) \ |
1cd4fffc LC |
683 | digits = d; \ |
684 | number_value = v; goto do_number | |
e65fc94b | 685 | #define DO_SIGNED_NUMBER(d, negative, v) \ |
1cd4fffc LC |
686 | digits = d; \ |
687 | negative_number = negative; \ | |
688 | u_number_value = v; goto do_signed_number | |
e65fc94b | 689 | |
1cd4fffc LC |
690 | /* The mask is not what you might think. |
691 | When the ordinal i'th bit is set, insert a colon | |
692 | before the i'th digit of the time zone representation. */ | |
e65fc94b | 693 | #define DO_TZ_OFFSET(d, negative, mask, v) \ |
1cd4fffc LC |
694 | digits = d; \ |
695 | negative_number = negative; \ | |
696 | tz_colon_mask = mask; \ | |
697 | u_number_value = v; goto do_tz_offset | |
e65fc94b | 698 | #define DO_NUMBER_SPACEPAD(d, v) \ |
1cd4fffc LC |
699 | digits = d; \ |
700 | number_value = v; goto do_number_spacepad | |
701 | ||
702 | case L_('%'): | |
703 | if (modifier != 0) | |
704 | goto bad_format; | |
705 | add1 (*f); | |
706 | break; | |
707 | ||
708 | case L_('a'): | |
709 | if (modifier != 0) | |
710 | goto bad_format; | |
711 | if (change_case) | |
712 | { | |
713 | to_uppcase = true; | |
714 | to_lowcase = false; | |
715 | } | |
e65fc94b | 716 | #ifdef _NL_CURRENT |
1cd4fffc LC |
717 | cpy (aw_len, a_wkday); |
718 | break; | |
e65fc94b | 719 | #else |
1cd4fffc | 720 | goto underlying_strftime; |
e65fc94b LC |
721 | #endif |
722 | ||
1cd4fffc LC |
723 | case 'A': |
724 | if (modifier != 0) | |
725 | goto bad_format; | |
726 | if (change_case) | |
727 | { | |
728 | to_uppcase = true; | |
729 | to_lowcase = false; | |
730 | } | |
e65fc94b | 731 | #ifdef _NL_CURRENT |
1cd4fffc LC |
732 | cpy (STRLEN (f_wkday), f_wkday); |
733 | break; | |
e65fc94b | 734 | #else |
1cd4fffc | 735 | goto underlying_strftime; |
e65fc94b LC |
736 | #endif |
737 | ||
1cd4fffc LC |
738 | case L_('b'): |
739 | case L_('h'): | |
740 | if (change_case) | |
741 | { | |
742 | to_uppcase = true; | |
743 | to_lowcase = false; | |
744 | } | |
745 | if (modifier != 0) | |
746 | goto bad_format; | |
e65fc94b | 747 | #ifdef _NL_CURRENT |
1cd4fffc LC |
748 | cpy (am_len, a_month); |
749 | break; | |
e65fc94b | 750 | #else |
1cd4fffc | 751 | goto underlying_strftime; |
e65fc94b LC |
752 | #endif |
753 | ||
1cd4fffc LC |
754 | case L_('B'): |
755 | if (modifier != 0) | |
756 | goto bad_format; | |
757 | if (change_case) | |
758 | { | |
759 | to_uppcase = true; | |
760 | to_lowcase = false; | |
761 | } | |
e65fc94b | 762 | #ifdef _NL_CURRENT |
1cd4fffc LC |
763 | cpy (STRLEN (f_month), f_month); |
764 | break; | |
e65fc94b | 765 | #else |
1cd4fffc | 766 | goto underlying_strftime; |
e65fc94b LC |
767 | #endif |
768 | ||
1cd4fffc LC |
769 | case L_('c'): |
770 | if (modifier == L_('O')) | |
771 | goto bad_format; | |
e65fc94b | 772 | #ifdef _NL_CURRENT |
1cd4fffc LC |
773 | if (! (modifier == 'E' |
774 | && (*(subfmt = | |
775 | (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
776 | NLW(ERA_D_T_FMT))) | |
777 | != '\0'))) | |
778 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
e65fc94b | 779 | #else |
1cd4fffc | 780 | goto underlying_strftime; |
e65fc94b LC |
781 | #endif |
782 | ||
1cd4fffc LC |
783 | subformat: |
784 | { | |
785 | size_t len = strftime_case_ (to_uppcase, | |
786 | NULL, STRFTIME_ARG ((size_t) -1) | |
787 | subfmt, | |
788 | tp extra_args LOCALE_ARG); | |
789 | add (len, strftime_case_ (to_uppcase, p, | |
790 | STRFTIME_ARG (maxsize - i) | |
791 | subfmt, | |
792 | tp extra_args LOCALE_ARG)); | |
793 | } | |
794 | break; | |
e65fc94b LC |
795 | |
796 | #if !(defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) | |
1cd4fffc LC |
797 | underlying_strftime: |
798 | { | |
799 | /* The relevant information is available only via the | |
800 | underlying strftime implementation, so use that. */ | |
801 | char ufmt[5]; | |
802 | char *u = ufmt; | |
803 | char ubuf[1024]; /* enough for any single format in practice */ | |
804 | size_t len; | |
805 | /* Make sure we're calling the actual underlying strftime. | |
806 | In some cases, config.h contains something like | |
807 | "#define strftime rpl_strftime". */ | |
e65fc94b LC |
808 | # ifdef strftime |
809 | # undef strftime | |
1cd4fffc | 810 | size_t strftime (); |
e65fc94b LC |
811 | # endif |
812 | ||
1cd4fffc LC |
813 | /* The space helps distinguish strftime failure from empty |
814 | output. */ | |
815 | *u++ = ' '; | |
816 | *u++ = '%'; | |
817 | if (modifier != 0) | |
818 | *u++ = modifier; | |
819 | *u++ = format_char; | |
820 | *u = '\0'; | |
821 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
822 | if (len != 0) | |
823 | cpy (len - 1, ubuf + 1); | |
824 | } | |
825 | break; | |
e65fc94b LC |
826 | #endif |
827 | ||
1cd4fffc LC |
828 | case L_('C'): |
829 | if (modifier == L_('O')) | |
830 | goto bad_format; | |
831 | if (modifier == L_('E')) | |
832 | { | |
e65fc94b | 833 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
834 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
835 | if (era) | |
836 | { | |
e65fc94b | 837 | # ifdef COMPILE_WIDE |
1cd4fffc LC |
838 | size_t len = __wcslen (era->era_wname); |
839 | cpy (len, era->era_wname); | |
e65fc94b | 840 | # else |
1cd4fffc LC |
841 | size_t len = strlen (era->era_name); |
842 | cpy (len, era->era_name); | |
e65fc94b | 843 | # endif |
1cd4fffc LC |
844 | break; |
845 | } | |
e65fc94b | 846 | #else |
1cd4fffc | 847 | goto underlying_strftime; |
e65fc94b | 848 | #endif |
1cd4fffc | 849 | } |
e65fc94b | 850 | |
1cd4fffc LC |
851 | { |
852 | int century = tp->tm_year / 100 + TM_YEAR_BASE / 100; | |
853 | century -= tp->tm_year % 100 < 0 && 0 < century; | |
854 | DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century); | |
855 | } | |
e65fc94b | 856 | |
1cd4fffc LC |
857 | case L_('x'): |
858 | if (modifier == L_('O')) | |
859 | goto bad_format; | |
e65fc94b | 860 | #ifdef _NL_CURRENT |
1cd4fffc LC |
861 | if (! (modifier == L_('E') |
862 | && (*(subfmt = | |
863 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) | |
864 | != L_('\0')))) | |
865 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
866 | goto subformat; | |
e65fc94b | 867 | #else |
1cd4fffc | 868 | goto underlying_strftime; |
e65fc94b | 869 | #endif |
1cd4fffc LC |
870 | case L_('D'): |
871 | if (modifier != 0) | |
872 | goto bad_format; | |
873 | subfmt = L_("%m/%d/%y"); | |
874 | goto subformat; | |
875 | ||
876 | case L_('d'): | |
877 | if (modifier == L_('E')) | |
878 | goto bad_format; | |
879 | ||
880 | DO_NUMBER (2, tp->tm_mday); | |
881 | ||
882 | case L_('e'): | |
883 | if (modifier == L_('E')) | |
884 | goto bad_format; | |
885 | ||
886 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); | |
887 | ||
888 | /* All numeric formats set DIGITS and NUMBER_VALUE (or U_NUMBER_VALUE) | |
889 | and then jump to one of these labels. */ | |
890 | ||
891 | do_tz_offset: | |
892 | always_output_a_sign = true; | |
893 | goto do_number_body; | |
894 | ||
895 | do_number_spacepad: | |
896 | /* Force `_' flag unless overridden by `0' or `-' flag. */ | |
897 | if (pad != L_('0') && pad != L_('-')) | |
898 | pad = L_('_'); | |
899 | ||
900 | do_number: | |
901 | /* Format NUMBER_VALUE according to the MODIFIER flag. */ | |
902 | negative_number = number_value < 0; | |
903 | u_number_value = number_value; | |
904 | ||
905 | do_signed_number: | |
906 | always_output_a_sign = false; | |
907 | tz_colon_mask = 0; | |
908 | ||
909 | do_number_body: | |
910 | /* Format U_NUMBER_VALUE according to the MODIFIER flag. | |
911 | NEGATIVE_NUMBER is nonzero if the original number was | |
912 | negative; in this case it was converted directly to | |
913 | unsigned int (i.e., modulo (UINT_MAX + 1)) without | |
914 | negating it. */ | |
915 | if (modifier == L_('O') && !negative_number) | |
916 | { | |
e65fc94b | 917 | #ifdef _NL_CURRENT |
1cd4fffc LC |
918 | /* Get the locale specific alternate representation of |
919 | the number. If none exist NULL is returned. */ | |
920 | const CHAR_T *cp = nl_get_alt_digit (u_number_value | |
921 | HELPER_LOCALE_ARG); | |
922 | ||
923 | if (cp != NULL) | |
924 | { | |
925 | size_t digitlen = STRLEN (cp); | |
926 | if (digitlen != 0) | |
927 | { | |
928 | cpy (digitlen, cp); | |
929 | break; | |
930 | } | |
931 | } | |
e65fc94b | 932 | #else |
1cd4fffc | 933 | goto underlying_strftime; |
e65fc94b | 934 | #endif |
1cd4fffc LC |
935 | } |
936 | ||
937 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
938 | ||
939 | if (negative_number) | |
940 | u_number_value = - u_number_value; | |
941 | ||
942 | do | |
943 | { | |
944 | if (tz_colon_mask & 1) | |
945 | *--bufp = ':'; | |
946 | tz_colon_mask >>= 1; | |
947 | *--bufp = u_number_value % 10 + L_('0'); | |
948 | u_number_value /= 10; | |
949 | } | |
950 | while (u_number_value != 0 || tz_colon_mask != 0); | |
951 | ||
952 | do_number_sign_and_padding: | |
953 | if (digits < width) | |
954 | digits = width; | |
955 | ||
956 | sign_char = (negative_number ? L_('-') | |
957 | : always_output_a_sign ? L_('+') | |
958 | : 0); | |
959 | ||
960 | if (pad == L_('-')) | |
961 | { | |
962 | if (sign_char) | |
963 | add1 (sign_char); | |
964 | } | |
965 | else | |
966 | { | |
967 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
968 | - bufp) - !!sign_char; | |
969 | ||
970 | if (padding > 0) | |
971 | { | |
972 | if (pad == L_('_')) | |
973 | { | |
974 | if ((size_t) padding >= maxsize - i) | |
975 | return 0; | |
976 | ||
977 | if (p) | |
978 | memset_space (p, padding); | |
979 | i += padding; | |
980 | width = width > padding ? width - padding : 0; | |
981 | if (sign_char) | |
982 | add1 (sign_char); | |
983 | } | |
984 | else | |
985 | { | |
986 | if ((size_t) digits >= maxsize - i) | |
987 | return 0; | |
988 | ||
989 | if (sign_char) | |
990 | add1 (sign_char); | |
991 | ||
992 | if (p) | |
993 | memset_zero (p, padding); | |
994 | i += padding; | |
995 | width = 0; | |
996 | } | |
997 | } | |
998 | else | |
999 | { | |
1000 | if (sign_char) | |
1001 | add1 (sign_char); | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); | |
1006 | break; | |
1007 | ||
1008 | case L_('F'): | |
1009 | if (modifier != 0) | |
1010 | goto bad_format; | |
1011 | subfmt = L_("%Y-%m-%d"); | |
1012 | goto subformat; | |
1013 | ||
1014 | case L_('H'): | |
1015 | if (modifier == L_('E')) | |
1016 | goto bad_format; | |
1017 | ||
1018 | DO_NUMBER (2, tp->tm_hour); | |
1019 | ||
1020 | case L_('I'): | |
1021 | if (modifier == L_('E')) | |
1022 | goto bad_format; | |
1023 | ||
1024 | DO_NUMBER (2, hour12); | |
1025 | ||
1026 | case L_('k'): /* GNU extension. */ | |
1027 | if (modifier == L_('E')) | |
1028 | goto bad_format; | |
1029 | ||
1030 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
1031 | ||
1032 | case L_('l'): /* GNU extension. */ | |
1033 | if (modifier == L_('E')) | |
1034 | goto bad_format; | |
1035 | ||
1036 | DO_NUMBER_SPACEPAD (2, hour12); | |
1037 | ||
1038 | case L_('j'): | |
1039 | if (modifier == L_('E')) | |
1040 | goto bad_format; | |
1041 | ||
1042 | DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U); | |
1043 | ||
1044 | case L_('M'): | |
1045 | if (modifier == L_('E')) | |
1046 | goto bad_format; | |
1047 | ||
1048 | DO_NUMBER (2, tp->tm_min); | |
1049 | ||
1050 | case L_('m'): | |
1051 | if (modifier == L_('E')) | |
1052 | goto bad_format; | |
1053 | ||
1054 | DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U); | |
e65fc94b LC |
1055 | |
1056 | #ifndef _LIBC | |
1cd4fffc LC |
1057 | case L_('N'): /* GNU extension. */ |
1058 | if (modifier == L_('E')) | |
1059 | goto bad_format; | |
1060 | ||
1061 | number_value = ns; | |
1062 | if (width == -1) | |
1063 | width = 9; | |
1064 | else | |
1065 | { | |
1066 | /* Take an explicit width less than 9 as a precision. */ | |
1067 | int j; | |
1068 | for (j = width; j < 9; j++) | |
1069 | number_value /= 10; | |
1070 | } | |
1071 | ||
1072 | DO_NUMBER (width, number_value); | |
e65fc94b LC |
1073 | #endif |
1074 | ||
1cd4fffc LC |
1075 | case L_('n'): |
1076 | add1 (L_('\n')); | |
1077 | break; | |
e65fc94b | 1078 | |
1cd4fffc LC |
1079 | case L_('P'): |
1080 | to_lowcase = true; | |
e65fc94b | 1081 | #ifndef _NL_CURRENT |
1cd4fffc | 1082 | format_char = L_('p'); |
e65fc94b | 1083 | #endif |
1cd4fffc LC |
1084 | /* FALLTHROUGH */ |
1085 | ||
1086 | case L_('p'): | |
1087 | if (change_case) | |
1088 | { | |
1089 | to_uppcase = false; | |
1090 | to_lowcase = true; | |
1091 | } | |
e65fc94b | 1092 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1093 | cpy (ap_len, ampm); |
1094 | break; | |
e65fc94b | 1095 | #else |
1cd4fffc | 1096 | goto underlying_strftime; |
e65fc94b LC |
1097 | #endif |
1098 | ||
1cd4fffc LC |
1099 | case L_('R'): |
1100 | subfmt = L_("%H:%M"); | |
1101 | goto subformat; | |
e65fc94b | 1102 | |
1cd4fffc | 1103 | case L_('r'): |
e65fc94b | 1104 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1105 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, |
1106 | NLW(T_FMT_AMPM))) | |
1107 | == L_('\0')) | |
1108 | subfmt = L_("%I:%M:%S %p"); | |
1109 | goto subformat; | |
e65fc94b | 1110 | #else |
1cd4fffc | 1111 | goto underlying_strftime; |
e65fc94b LC |
1112 | #endif |
1113 | ||
1cd4fffc LC |
1114 | case L_('S'): |
1115 | if (modifier == L_('E')) | |
1116 | goto bad_format; | |
e65fc94b | 1117 | |
1cd4fffc | 1118 | DO_NUMBER (2, tp->tm_sec); |
e65fc94b | 1119 | |
1cd4fffc LC |
1120 | case L_('s'): /* GNU extension. */ |
1121 | { | |
1122 | struct tm ltm; | |
1123 | time_t t; | |
e65fc94b | 1124 | |
1cd4fffc LC |
1125 | ltm = *tp; |
1126 | t = mktime (<m); | |
e65fc94b | 1127 | |
1cd4fffc LC |
1128 | /* Generate string value for T using time_t arithmetic; |
1129 | this works even if sizeof (long) < sizeof (time_t). */ | |
e65fc94b | 1130 | |
1cd4fffc LC |
1131 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
1132 | negative_number = t < 0; | |
e65fc94b | 1133 | |
1cd4fffc LC |
1134 | do |
1135 | { | |
1136 | int d = t % 10; | |
1137 | t /= 10; | |
1138 | *--bufp = (negative_number ? -d : d) + L_('0'); | |
1139 | } | |
1140 | while (t != 0); | |
e65fc94b | 1141 | |
1cd4fffc LC |
1142 | digits = 1; |
1143 | always_output_a_sign = false; | |
1144 | goto do_number_sign_and_padding; | |
1145 | } | |
e65fc94b | 1146 | |
1cd4fffc LC |
1147 | case L_('X'): |
1148 | if (modifier == L_('O')) | |
1149 | goto bad_format; | |
e65fc94b | 1150 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1151 | if (! (modifier == L_('E') |
1152 | && (*(subfmt = | |
1153 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) | |
1154 | != L_('\0')))) | |
1155 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1156 | goto subformat; | |
e65fc94b | 1157 | #else |
1cd4fffc | 1158 | goto underlying_strftime; |
e65fc94b | 1159 | #endif |
1cd4fffc LC |
1160 | case L_('T'): |
1161 | subfmt = L_("%H:%M:%S"); | |
1162 | goto subformat; | |
1163 | ||
1164 | case L_('t'): | |
1165 | add1 (L_('\t')); | |
1166 | break; | |
1167 | ||
1168 | case L_('u'): | |
1169 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1170 | ||
1171 | case L_('U'): | |
1172 | if (modifier == L_('E')) | |
1173 | goto bad_format; | |
1174 | ||
1175 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1176 | ||
1177 | case L_('V'): | |
1178 | case L_('g'): | |
1179 | case L_('G'): | |
1180 | if (modifier == L_('E')) | |
1181 | goto bad_format; | |
1182 | { | |
1183 | /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE) | |
1184 | is a leap year, except that YEAR and YEAR - 1 both work | |
1185 | correctly even when (tp->tm_year + TM_YEAR_BASE) would | |
1186 | overflow. */ | |
1187 | int year = (tp->tm_year | |
1188 | + (tp->tm_year < 0 | |
1189 | ? TM_YEAR_BASE % 400 | |
1190 | : TM_YEAR_BASE % 400 - 400)); | |
1191 | int year_adjust = 0; | |
1192 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1193 | ||
1194 | if (days < 0) | |
1195 | { | |
1196 | /* This ISO week belongs to the previous year. */ | |
1197 | year_adjust = -1; | |
1198 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)), | |
1199 | tp->tm_wday); | |
1200 | } | |
1201 | else | |
1202 | { | |
1203 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1204 | tp->tm_wday); | |
1205 | if (0 <= d) | |
1206 | { | |
1207 | /* This ISO week belongs to the next year. */ | |
1208 | year_adjust = 1; | |
1209 | days = d; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | switch (*f) | |
1214 | { | |
1215 | case L_('g'): | |
1216 | { | |
1217 | int yy = (tp->tm_year % 100 + year_adjust) % 100; | |
1218 | DO_NUMBER (2, (0 <= yy | |
1219 | ? yy | |
1220 | : tp->tm_year < -TM_YEAR_BASE - year_adjust | |
1221 | ? -yy | |
1222 | : yy + 100)); | |
1223 | } | |
1224 | ||
1225 | case L_('G'): | |
1226 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust, | |
1227 | (tp->tm_year + (unsigned int) TM_YEAR_BASE | |
1228 | + year_adjust)); | |
1229 | ||
1230 | default: | |
1231 | DO_NUMBER (2, days / 7 + 1); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | case L_('W'): | |
1236 | if (modifier == L_('E')) | |
1237 | goto bad_format; | |
1238 | ||
1239 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1240 | ||
1241 | case L_('w'): | |
1242 | if (modifier == L_('E')) | |
1243 | goto bad_format; | |
1244 | ||
1245 | DO_NUMBER (1, tp->tm_wday); | |
1246 | ||
1247 | case L_('Y'): | |
1248 | if (modifier == 'E') | |
1249 | { | |
e65fc94b | 1250 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1251 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1252 | if (era) | |
1253 | { | |
e65fc94b | 1254 | # ifdef COMPILE_WIDE |
1cd4fffc | 1255 | subfmt = era->era_wformat; |
e65fc94b | 1256 | # else |
1cd4fffc | 1257 | subfmt = era->era_format; |
e65fc94b | 1258 | # endif |
1cd4fffc LC |
1259 | goto subformat; |
1260 | } | |
e65fc94b | 1261 | #else |
1cd4fffc | 1262 | goto underlying_strftime; |
e65fc94b | 1263 | #endif |
1cd4fffc LC |
1264 | } |
1265 | if (modifier == L_('O')) | |
1266 | goto bad_format; | |
1267 | else | |
1268 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE, | |
1269 | tp->tm_year + (unsigned int) TM_YEAR_BASE); | |
1270 | ||
1271 | case L_('y'): | |
1272 | if (modifier == L_('E')) | |
1273 | { | |
e65fc94b | 1274 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1275 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1276 | if (era) | |
1277 | { | |
1278 | int delta = tp->tm_year - era->start_date[0]; | |
1279 | DO_NUMBER (1, (era->offset | |
1280 | + delta * era->absolute_direction)); | |
1281 | } | |
e65fc94b | 1282 | #else |
1cd4fffc | 1283 | goto underlying_strftime; |
e65fc94b | 1284 | #endif |
1cd4fffc LC |
1285 | } |
1286 | ||
1287 | { | |
1288 | int yy = tp->tm_year % 100; | |
1289 | if (yy < 0) | |
1290 | yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100; | |
1291 | DO_NUMBER (2, yy); | |
1292 | } | |
1293 | ||
1294 | case L_('Z'): | |
1295 | if (change_case) | |
1296 | { | |
1297 | to_uppcase = false; | |
1298 | to_lowcase = true; | |
1299 | } | |
e65fc94b LC |
1300 | |
1301 | #if HAVE_TZNAME | |
1cd4fffc LC |
1302 | /* The tzset() call might have changed the value. */ |
1303 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1304 | zone = tzname[tp->tm_isdst != 0]; | |
e65fc94b | 1305 | #endif |
1cd4fffc LC |
1306 | if (! zone) |
1307 | zone = ""; | |
e65fc94b LC |
1308 | |
1309 | #ifdef COMPILE_WIDE | |
1cd4fffc LC |
1310 | { |
1311 | /* The zone string is always given in multibyte form. We have | |
1312 | to transform it first. */ | |
1313 | wchar_t *wczone; | |
1314 | size_t len; | |
1315 | widen (zone, wczone, len); | |
1316 | cpy (len, wczone); | |
1317 | } | |
e65fc94b | 1318 | #else |
1cd4fffc | 1319 | cpy (strlen (zone), zone); |
e65fc94b | 1320 | #endif |
1cd4fffc LC |
1321 | break; |
1322 | ||
1323 | case L_(':'): | |
1324 | /* :, ::, and ::: are valid only just before 'z'. | |
1325 | :::: etc. are rejected later. */ | |
1326 | for (colons = 1; f[colons] == L_(':'); colons++) | |
1327 | continue; | |
1328 | if (f[colons] != L_('z')) | |
1329 | goto bad_format; | |
1330 | f += colons; | |
1331 | goto do_z_conversion; | |
1332 | ||
1333 | case L_('z'): | |
1334 | colons = 0; | |
1335 | ||
1336 | do_z_conversion: | |
1337 | if (tp->tm_isdst < 0) | |
1338 | break; | |
1339 | ||
1340 | { | |
1341 | int diff; | |
1342 | int hour_diff; | |
1343 | int min_diff; | |
1344 | int sec_diff; | |
e65fc94b | 1345 | #if HAVE_TM_GMTOFF |
1cd4fffc | 1346 | diff = tp->tm_gmtoff; |
e65fc94b | 1347 | #else |
1cd4fffc LC |
1348 | if (ut) |
1349 | diff = 0; | |
1350 | else | |
1351 | { | |
1352 | struct tm gtm; | |
1353 | struct tm ltm; | |
1354 | time_t lt; | |
1355 | ||
1356 | ltm = *tp; | |
1357 | lt = mktime (<m); | |
1358 | ||
1359 | if (lt == (time_t) -1) | |
1360 | { | |
1361 | /* mktime returns -1 for errors, but -1 is also a | |
1362 | valid time_t value. Check whether an error really | |
1363 | occurred. */ | |
1364 | struct tm tm; | |
1365 | ||
1366 | if (! __localtime_r (<, &tm) | |
1367 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1368 | | (ltm.tm_min ^ tm.tm_min) | |
1369 | | (ltm.tm_hour ^ tm.tm_hour) | |
1370 | | (ltm.tm_mday ^ tm.tm_mday) | |
1371 | | (ltm.tm_mon ^ tm.tm_mon) | |
1372 | | (ltm.tm_year ^ tm.tm_year))) | |
1373 | break; | |
1374 | } | |
1375 | ||
1376 | if (! __gmtime_r (<, >m)) | |
1377 | break; | |
1378 | ||
1379 | diff = tm_diff (<m, >m); | |
1380 | } | |
e65fc94b LC |
1381 | #endif |
1382 | ||
1cd4fffc LC |
1383 | hour_diff = diff / 60 / 60; |
1384 | min_diff = diff / 60 % 60; | |
1385 | sec_diff = diff % 60; | |
1386 | ||
1387 | switch (colons) | |
1388 | { | |
1389 | case 0: /* +hhmm */ | |
1390 | DO_TZ_OFFSET (5, diff < 0, 0, hour_diff * 100 + min_diff); | |
1391 | ||
1392 | case 1: tz_hh_mm: /* +hh:mm */ | |
1393 | DO_TZ_OFFSET (6, diff < 0, 04, hour_diff * 100 + min_diff); | |
1394 | ||
1395 | case 2: tz_hh_mm_ss: /* +hh:mm:ss */ | |
1396 | DO_TZ_OFFSET (9, diff < 0, 024, | |
1397 | hour_diff * 10000 + min_diff * 100 + sec_diff); | |
1398 | ||
1399 | case 3: /* +hh if possible, else +hh:mm, else +hh:mm:ss */ | |
1400 | if (sec_diff != 0) | |
1401 | goto tz_hh_mm_ss; | |
1402 | if (min_diff != 0) | |
1403 | goto tz_hh_mm; | |
1404 | DO_TZ_OFFSET (3, diff < 0, 0, hour_diff); | |
1405 | ||
1406 | default: | |
1407 | goto bad_format; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1412 | --f; | |
1413 | /* Fall through. */ | |
1414 | default: | |
1415 | /* Unknown format; output the format, including the '%', | |
1416 | since this is most likely the right thing to do if a | |
1417 | multibyte string has been misparsed. */ | |
1418 | bad_format: | |
1419 | { | |
1420 | int flen; | |
1421 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1422 | continue; | |
1423 | cpy (flen, &f[1 - flen]); | |
1424 | } | |
1425 | break; | |
1426 | } | |
e65fc94b LC |
1427 | } |
1428 | ||
1429 | #if ! FPRINTFTIME | |
1430 | if (p && maxsize != 0) | |
1431 | *p = L_('\0'); | |
1432 | #endif | |
1433 | ||
1434 | return i; | |
1435 | } | |
1436 | ||
1437 | /* Write information from TP into S according to the format | |
1438 | string FORMAT, writing no more that MAXSIZE characters | |
1439 | (including the terminating '\0') and returning number of | |
1440 | characters written. If S is NULL, nothing will be written | |
1441 | anywhere, so to determine how many characters would be | |
1442 | written, use NULL for S and (size_t) -1 for MAXSIZE. */ | |
1443 | size_t | |
1444 | my_strftime (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) | |
1cd4fffc LC |
1445 | const CHAR_T *format, |
1446 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
1447 | { |
1448 | return strftime_case_ (false, s, STRFTIME_ARG (maxsize) | |
1cd4fffc | 1449 | format, tp extra_args LOCALE_ARG); |
e65fc94b LC |
1450 | } |
1451 | ||
1452 | #if defined _LIBC && ! FPRINTFTIME | |
1453 | libc_hidden_def (my_strftime) | |
1454 | #endif | |
1455 | ||
1456 | ||
1457 | #if defined emacs && ! FPRINTFTIME | |
1458 | /* For Emacs we have a separate interface which corresponds to the normal | |
1459 | strftime function plus the ut argument, but without the ns argument. */ | |
1460 | size_t | |
1461 | emacs_strftimeu (char *s, size_t maxsize, const char *format, | |
1cd4fffc | 1462 | const struct tm *tp, int ut) |
e65fc94b LC |
1463 | { |
1464 | return my_strftime (s, maxsize, format, tp, ut, 0); | |
1465 | } | |
1466 | #endif |