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49114fd4 | 1 | /* Copyright (C) 1991-2001, 2003-2007, 2009-2011 Free Software Foundation, Inc. |
e65fc94b LC |
2 | |
3 | NOTE: The canonical source of this file is maintained with the GNU C Library. | |
4 | Bugs can be reported to bug-glibc@prep.ai.mit.edu. | |
5 | ||
6 | This program is free software: you can redistribute it and/or modify | |
7 | it under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifdef _LIBC | |
e65fc94b LC |
20 | # define HAVE_STRUCT_ERA_ENTRY 1 |
21 | # define HAVE_TM_GMTOFF 1 | |
22 | # define HAVE_TM_ZONE 1 | |
23 | # define HAVE_TZNAME 1 | |
24 | # define HAVE_TZSET 1 | |
e65fc94b LC |
25 | # include "../locale/localeinfo.h" |
26 | #else | |
27 | # include <config.h> | |
28 | # if FPRINTFTIME | |
f29ded4b | 29 | # include "ignore-value.h" |
e65fc94b | 30 | # include "fprintftime.h" |
f240aacb LC |
31 | # else |
32 | # include "strftime.h" | |
e65fc94b LC |
33 | # endif |
34 | #endif | |
35 | ||
36 | #include <ctype.h> | |
37 | #include <time.h> | |
38 | ||
39 | #if HAVE_TZNAME && !HAVE_DECL_TZNAME | |
40 | extern char *tzname[]; | |
41 | #endif | |
42 | ||
43 | /* Do multibyte processing if multibytes are supported, unless | |
44 | multibyte sequences are safe in formats. Multibyte sequences are | |
45 | safe if they cannot contain byte sequences that look like format | |
f240aacb LC |
46 | conversion specifications. The multibyte encodings used by the |
47 | C library on the various platforms (UTF-8, GB2312, GBK, CP936, | |
48 | GB18030, EUC-TW, BIG5, BIG5-HKSCS, CP950, EUC-JP, EUC-KR, CP949, | |
49 | SHIFT_JIS, CP932, JOHAB) are safe for formats, because the byte '%' | |
50 | cannot occur in a multibyte character except in the first byte. | |
49114fd4 LC |
51 | |
52 | The DEC-HANYU encoding used on OSF/1 is not safe for formats, but | |
53 | this encoding has never been seen in real-life use, so we ignore | |
54 | it. */ | |
55 | #if !(defined __osf__ && 0) | |
f240aacb LC |
56 | # define MULTIBYTE_IS_FORMAT_SAFE 1 |
57 | #endif | |
58 | #define DO_MULTIBYTE (! MULTIBYTE_IS_FORMAT_SAFE) | |
e65fc94b LC |
59 | |
60 | #if DO_MULTIBYTE | |
4a462e35 | 61 | # include <wchar.h> |
e65fc94b LC |
62 | static const mbstate_t mbstate_zero; |
63 | #endif | |
64 | ||
65 | #include <limits.h> | |
66 | #include <stdbool.h> | |
67 | #include <stddef.h> | |
68 | #include <stdlib.h> | |
69 | #include <string.h> | |
70 | ||
71 | #ifdef COMPILE_WIDE | |
72 | # include <endian.h> | |
73 | # define CHAR_T wchar_t | |
74 | # define UCHAR_T unsigned int | |
75 | # define L_(Str) L##Str | |
76 | # define NLW(Sym) _NL_W##Sym | |
77 | ||
78 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
79 | # define STRLEN(s) __wcslen (s) | |
80 | ||
81 | #else | |
82 | # define CHAR_T char | |
83 | # define UCHAR_T unsigned char | |
84 | # define L_(Str) Str | |
85 | # define NLW(Sym) Sym | |
86 | ||
87 | # define MEMCPY(d, s, n) memcpy (d, s, n) | |
88 | # define STRLEN(s) strlen (s) | |
89 | ||
e65fc94b LC |
90 | #endif |
91 | ||
92 | /* Shift A right by B bits portably, by dividing A by 2**B and | |
93 | truncating towards minus infinity. A and B should be free of side | |
94 | effects, and B should be in the range 0 <= B <= INT_BITS - 2, where | |
95 | INT_BITS is the number of useful bits in an int. GNU code can | |
96 | assume that INT_BITS is at least 32. | |
97 | ||
98 | ISO C99 says that A >> B is implementation-defined if A < 0. Some | |
99 | implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift | |
100 | right in the usual way when A < 0, so SHR falls back on division if | |
101 | ordinary A >> B doesn't seem to be the usual signed shift. */ | |
1cd4fffc LC |
102 | #define SHR(a, b) \ |
103 | (-1 >> 1 == -1 \ | |
104 | ? (a) >> (b) \ | |
e65fc94b LC |
105 | : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) |
106 | ||
107 | /* Bound on length of the string representing an integer type or expression T. | |
108 | Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485; | |
109 | add 1 for integer division truncation; add 1 more for a minus sign | |
110 | if needed. */ | |
111 | #define INT_STRLEN_BOUND(t) \ | |
112 | ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2) | |
113 | ||
114 | #define TM_YEAR_BASE 1900 | |
115 | ||
116 | #ifndef __isleap | |
117 | /* Nonzero if YEAR is a leap year (every 4 years, | |
118 | except every 100th isn't, and every 400th is). */ | |
1cd4fffc | 119 | # define __isleap(year) \ |
e65fc94b LC |
120 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
121 | #endif | |
122 | ||
123 | ||
124 | #ifdef _LIBC | |
125 | # define tzname __tzname | |
126 | # define tzset __tzset | |
127 | #endif | |
128 | ||
129 | #if !HAVE_TM_GMTOFF | |
130 | /* Portable standalone applications should supply a "time.h" that | |
131 | declares a POSIX-compliant localtime_r, for the benefit of older | |
132 | implementations that lack localtime_r or have a nonstandard one. | |
133 | See the gnulib time_r module for one way to implement this. */ | |
134 | # undef __gmtime_r | |
135 | # undef __localtime_r | |
136 | # define __gmtime_r gmtime_r | |
137 | # define __localtime_r localtime_r | |
138 | #endif | |
139 | ||
140 | ||
141 | #ifndef FPRINTFTIME | |
142 | # define FPRINTFTIME 0 | |
143 | #endif | |
144 | ||
145 | #if FPRINTFTIME | |
146 | # define STREAM_OR_CHAR_T FILE | |
147 | # define STRFTIME_ARG(x) /* empty */ | |
148 | #else | |
149 | # define STREAM_OR_CHAR_T CHAR_T | |
150 | # define STRFTIME_ARG(x) x, | |
151 | #endif | |
152 | ||
153 | #if FPRINTFTIME | |
154 | # define memset_byte(P, Len, Byte) \ | |
155 | do { size_t _i; for (_i = 0; _i < Len; _i++) fputc (Byte, P); } while (0) | |
156 | # define memset_space(P, Len) memset_byte (P, Len, ' ') | |
157 | # define memset_zero(P, Len) memset_byte (P, Len, '0') | |
158 | #elif defined COMPILE_WIDE | |
159 | # define memset_space(P, Len) (wmemset (P, L' ', Len), (P) += (Len)) | |
160 | # define memset_zero(P, Len) (wmemset (P, L'0', Len), (P) += (Len)) | |
161 | #else | |
162 | # define memset_space(P, Len) (memset (P, ' ', Len), (P) += (Len)) | |
163 | # define memset_zero(P, Len) (memset (P, '0', Len), (P) += (Len)) | |
164 | #endif | |
165 | ||
166 | #if FPRINTFTIME | |
167 | # define advance(P, N) | |
168 | #else | |
169 | # define advance(P, N) ((P) += (N)) | |
170 | #endif | |
171 | ||
1cd4fffc LC |
172 | #define add(n, f) \ |
173 | do \ | |
174 | { \ | |
175 | int _n = (n); \ | |
176 | int _delta = width - _n; \ | |
177 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
178 | if ((size_t) _incr >= maxsize - i) \ | |
179 | return 0; \ | |
180 | if (p) \ | |
181 | { \ | |
182 | if (digits == 0 && _delta > 0) \ | |
183 | { \ | |
184 | if (pad == L_('0')) \ | |
185 | memset_zero (p, _delta); \ | |
186 | else \ | |
187 | memset_space (p, _delta); \ | |
188 | } \ | |
189 | f; \ | |
190 | advance (p, _n); \ | |
191 | } \ | |
192 | i += _incr; \ | |
e65fc94b LC |
193 | } while (0) |
194 | ||
195 | #if FPRINTFTIME | |
196 | # define add1(C) add (1, fputc (C, p)) | |
197 | #else | |
198 | # define add1(C) add (1, *p = C) | |
199 | #endif | |
200 | ||
201 | #if FPRINTFTIME | |
202 | # define cpy(n, s) \ | |
1cd4fffc LC |
203 | add ((n), \ |
204 | do \ | |
205 | { \ | |
206 | if (to_lowcase) \ | |
207 | fwrite_lowcase (p, (s), _n); \ | |
208 | else if (to_uppcase) \ | |
209 | fwrite_uppcase (p, (s), _n); \ | |
210 | else \ | |
211 | { \ | |
212 | /* We are ignoring the value of fwrite here, in spite of the \ | |
213 | fact that technically, that may not be valid: the fwrite \ | |
214 | specification in POSIX 2008 defers to that of fputc, which \ | |
215 | is intended to be consistent with the one from ISO C, \ | |
216 | which permits failure due to ENOMEM *without* setting the \ | |
217 | stream's error indicator. */ \ | |
218 | ignore_value (fwrite ((s), _n, 1, p)); \ | |
219 | } \ | |
220 | } \ | |
221 | while (0) \ | |
8912421c | 222 | ) |
e65fc94b | 223 | #else |
1cd4fffc LC |
224 | # define cpy(n, s) \ |
225 | add ((n), \ | |
226 | if (to_lowcase) \ | |
227 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ | |
228 | else if (to_uppcase) \ | |
229 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ | |
230 | else \ | |
231 | MEMCPY ((void *) p, (void const *) (s), _n)) | |
e65fc94b LC |
232 | #endif |
233 | ||
234 | #ifdef COMPILE_WIDE | |
235 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL | |
236 | # undef __mbsrtowcs_l | |
237 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) | |
238 | # endif | |
239 | # define widen(os, ws, l) \ | |
1cd4fffc LC |
240 | { \ |
241 | mbstate_t __st; \ | |
242 | const char *__s = os; \ | |
243 | memset (&__st, '\0', sizeof (__st)); \ | |
244 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ | |
245 | ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \ | |
246 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ | |
e65fc94b LC |
247 | } |
248 | #endif | |
249 | ||
250 | ||
251 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
252 | /* We use this code also for the extended locale handling where the | |
253 | function gets as an additional argument the locale which has to be | |
254 | used. To access the values we have to redefine the _NL_CURRENT | |
255 | macro. */ | |
1cd4fffc LC |
256 | # define strftime __strftime_l |
257 | # define wcsftime __wcsftime_l | |
e65fc94b LC |
258 | # undef _NL_CURRENT |
259 | # define _NL_CURRENT(category, item) \ | |
260 | (current->values[_NL_ITEM_INDEX (item)].string) | |
261 | # define LOCALE_ARG , loc | |
262 | # define LOCALE_PARAM_PROTO , __locale_t loc | |
263 | # define HELPER_LOCALE_ARG , current | |
264 | #else | |
265 | # define LOCALE_PARAM_PROTO | |
266 | # define LOCALE_ARG | |
267 | # ifdef _LIBC | |
268 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) | |
269 | # else | |
270 | # define HELPER_LOCALE_ARG | |
271 | # endif | |
272 | #endif | |
273 | ||
274 | #ifdef COMPILE_WIDE | |
275 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
276 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) | |
277 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) | |
278 | # else | |
279 | # define TOUPPER(Ch, L) towupper (Ch) | |
280 | # define TOLOWER(Ch, L) towlower (Ch) | |
281 | # endif | |
282 | #else | |
283 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
284 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) | |
285 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) | |
286 | # else | |
287 | # define TOUPPER(Ch, L) toupper (Ch) | |
288 | # define TOLOWER(Ch, L) tolower (Ch) | |
289 | # endif | |
290 | #endif | |
291 | /* We don't use `isdigit' here since the locale dependent | |
292 | interpretation is not what we want here. We only need to accept | |
293 | the arabic digits in the ASCII range. One day there is perhaps a | |
294 | more reliable way to accept other sets of digits. */ | |
295 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) | |
296 | ||
297 | #if FPRINTFTIME | |
298 | static void | |
299 | fwrite_lowcase (FILE *fp, const CHAR_T *src, size_t len) | |
300 | { | |
301 | while (len-- > 0) | |
302 | { | |
303 | fputc (TOLOWER ((UCHAR_T) *src, loc), fp); | |
304 | ++src; | |
305 | } | |
306 | } | |
307 | ||
308 | static void | |
309 | fwrite_uppcase (FILE *fp, const CHAR_T *src, size_t len) | |
310 | { | |
311 | while (len-- > 0) | |
312 | { | |
313 | fputc (TOUPPER ((UCHAR_T) *src, loc), fp); | |
314 | ++src; | |
315 | } | |
316 | } | |
317 | #else | |
318 | static CHAR_T * | |
319 | memcpy_lowcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 320 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
321 | { |
322 | while (len-- > 0) | |
323 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); | |
324 | return dest; | |
325 | } | |
326 | ||
327 | static CHAR_T * | |
328 | memcpy_uppcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 329 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
330 | { |
331 | while (len-- > 0) | |
332 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); | |
333 | return dest; | |
334 | } | |
335 | #endif | |
336 | ||
337 | ||
338 | #if ! HAVE_TM_GMTOFF | |
339 | /* Yield the difference between *A and *B, | |
340 | measured in seconds, ignoring leap seconds. */ | |
341 | # define tm_diff ftime_tm_diff | |
342 | static int | |
343 | tm_diff (const struct tm *a, const struct tm *b) | |
344 | { | |
345 | /* Compute intervening leap days correctly even if year is negative. | |
346 | Take care to avoid int overflow in leap day calculations, | |
347 | but it's OK to assume that A and B are close to each other. */ | |
348 | int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); | |
349 | int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); | |
350 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
351 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
352 | int a400 = SHR (a100, 2); | |
353 | int b400 = SHR (b100, 2); | |
354 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
355 | int years = a->tm_year - b->tm_year; | |
356 | int days = (365 * years + intervening_leap_days | |
1cd4fffc | 357 | + (a->tm_yday - b->tm_yday)); |
e65fc94b | 358 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
1cd4fffc LC |
359 | + (a->tm_min - b->tm_min)) |
360 | + (a->tm_sec - b->tm_sec)); | |
e65fc94b LC |
361 | } |
362 | #endif /* ! HAVE_TM_GMTOFF */ | |
363 | ||
364 | ||
365 | ||
366 | /* The number of days from the first day of the first ISO week of this | |
367 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
368 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
369 | be as small as YDAY_MINIMUM. */ | |
370 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
371 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
372 | #define YDAY_MINIMUM (-366) | |
373 | #ifdef __GNUC__ | |
374 | __inline__ | |
375 | #endif | |
376 | static int | |
377 | iso_week_days (int yday, int wday) | |
378 | { | |
379 | /* Add enough to the first operand of % to make it nonnegative. */ | |
380 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
381 | return (yday | |
1cd4fffc LC |
382 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
383 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
e65fc94b LC |
384 | } |
385 | ||
386 | ||
387 | /* When compiling this file, GNU applications can #define my_strftime | |
388 | to a symbol (typically nstrftime) to get an extended strftime with | |
389 | extra arguments UT and NS. Emacs is a special case for now, but | |
390 | this Emacs-specific code can be removed once Emacs's config.h | |
391 | defines my_strftime. */ | |
392 | #if defined emacs && !defined my_strftime | |
393 | # define my_strftime nstrftime | |
394 | #endif | |
395 | ||
396 | #if FPRINTFTIME | |
397 | # undef my_strftime | |
398 | # define my_strftime fprintftime | |
399 | #endif | |
400 | ||
401 | #ifdef my_strftime | |
402 | # define extra_args , ut, ns | |
403 | # define extra_args_spec , int ut, int ns | |
404 | #else | |
405 | # if defined COMPILE_WIDE | |
406 | # define my_strftime wcsftime | |
407 | # define nl_get_alt_digit _nl_get_walt_digit | |
408 | # else | |
409 | # define my_strftime strftime | |
410 | # define nl_get_alt_digit _nl_get_alt_digit | |
411 | # endif | |
412 | # define extra_args | |
413 | # define extra_args_spec | |
414 | /* We don't have this information in general. */ | |
415 | # define ut 0 | |
416 | # define ns 0 | |
417 | #endif | |
418 | ||
419 | ||
420 | /* Just like my_strftime, below, but with one more parameter, UPCASE, | |
421 | to indicate that the result should be converted to upper case. */ | |
422 | static size_t | |
423 | strftime_case_ (bool upcase, STREAM_OR_CHAR_T *s, | |
1cd4fffc LC |
424 | STRFTIME_ARG (size_t maxsize) |
425 | const CHAR_T *format, | |
426 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
427 | { |
428 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
429 | struct locale_data *const current = loc->__locales[LC_TIME]; | |
430 | #endif | |
431 | #if FPRINTFTIME | |
432 | size_t maxsize = (size_t) -1; | |
433 | #endif | |
434 | ||
435 | int hour12 = tp->tm_hour; | |
436 | #ifdef _NL_CURRENT | |
437 | /* We cannot make the following values variables since we must delay | |
438 | the evaluation of these values until really needed since some | |
439 | expressions might not be valid in every situation. The `struct tm' | |
440 | might be generated by a strptime() call that initialized | |
441 | only a few elements. Dereference the pointers only if the format | |
442 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
443 | # define a_wkday \ | |
444 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
445 | # define f_wkday \ | |
446 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
447 | # define a_month \ | |
448 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
449 | # define f_month \ | |
450 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
451 | # define ampm \ | |
1cd4fffc LC |
452 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ |
453 | ? NLW(PM_STR) : NLW(AM_STR))) | |
e65fc94b LC |
454 | |
455 | # define aw_len STRLEN (a_wkday) | |
456 | # define am_len STRLEN (a_month) | |
457 | # define ap_len STRLEN (ampm) | |
458 | #endif | |
459 | const char *zone; | |
460 | size_t i = 0; | |
461 | STREAM_OR_CHAR_T *p = s; | |
462 | const CHAR_T *f; | |
463 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
464 | const char *format_end = NULL; | |
465 | #endif | |
466 | ||
467 | #if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST | |
468 | /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned | |
469 | by localtime. On such systems, we must either use the tzset and | |
470 | localtime wrappers to work around the bug (which sets | |
471 | HAVE_RUN_TZSET_TEST) or make a copy of the structure. */ | |
472 | struct tm copy = *tp; | |
473 | tp = © | |
474 | #endif | |
475 | ||
476 | zone = NULL; | |
477 | #if HAVE_TM_ZONE | |
478 | /* The POSIX test suite assumes that setting | |
479 | the environment variable TZ to a new value before calling strftime() | |
480 | will influence the result (the %Z format) even if the information in | |
481 | TP is computed with a totally different time zone. | |
482 | This is bogus: though POSIX allows bad behavior like this, | |
483 | POSIX does not require it. Do the right thing instead. */ | |
484 | zone = (const char *) tp->tm_zone; | |
485 | #endif | |
486 | #if HAVE_TZNAME | |
487 | if (ut) | |
488 | { | |
489 | if (! (zone && *zone)) | |
1cd4fffc | 490 | zone = "GMT"; |
e65fc94b LC |
491 | } |
492 | else | |
493 | { | |
494 | /* POSIX.1 requires that local time zone information be used as | |
1cd4fffc | 495 | though strftime called tzset. */ |
e65fc94b LC |
496 | # if HAVE_TZSET |
497 | tzset (); | |
498 | # endif | |
499 | } | |
500 | #endif | |
501 | ||
502 | if (hour12 > 12) | |
503 | hour12 -= 12; | |
504 | else | |
505 | if (hour12 == 0) | |
506 | hour12 = 12; | |
507 | ||
508 | for (f = format; *f != '\0'; ++f) | |
509 | { | |
1cd4fffc LC |
510 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
511 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
512 | int digits = 0; /* Max digits for numeric format. */ | |
513 | int number_value; /* Numeric value to be printed. */ | |
e65fc94b | 514 | unsigned int u_number_value; /* (unsigned int) number_value. */ |
1cd4fffc | 515 | bool negative_number; /* The number is negative. */ |
e65fc94b | 516 | bool always_output_a_sign; /* +/- should always be output. */ |
1cd4fffc | 517 | int tz_colon_mask; /* Bitmask of where ':' should appear. */ |
e65fc94b LC |
518 | const CHAR_T *subfmt; |
519 | CHAR_T sign_char; | |
520 | CHAR_T *bufp; | |
521 | CHAR_T buf[1 | |
1cd4fffc LC |
522 | + 2 /* for the two colons in a %::z or %:::z time zone */ |
523 | + (sizeof (int) < sizeof (time_t) | |
524 | ? INT_STRLEN_BOUND (time_t) | |
525 | : INT_STRLEN_BOUND (int))]; | |
e65fc94b LC |
526 | int width = -1; |
527 | bool to_lowcase = false; | |
528 | bool to_uppcase = upcase; | |
529 | size_t colons; | |
530 | bool change_case = false; | |
531 | int format_char; | |
532 | ||
533 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
534 | switch (*f) | |
1cd4fffc LC |
535 | { |
536 | case L_('%'): | |
537 | break; | |
538 | ||
539 | case L_('\b'): case L_('\t'): case L_('\n'): | |
540 | case L_('\v'): case L_('\f'): case L_('\r'): | |
541 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
542 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
543 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
544 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
545 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
546 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
547 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
548 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
549 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
550 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
551 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
552 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
553 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
554 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
555 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
556 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
557 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
558 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
559 | case L_('~'): | |
560 | /* The C Standard requires these 98 characters (plus '%') to | |
561 | be in the basic execution character set. None of these | |
562 | characters can start a multibyte sequence, so they need | |
563 | not be analyzed further. */ | |
564 | add1 (*f); | |
565 | continue; | |
566 | ||
567 | default: | |
568 | /* Copy this multibyte sequence until we reach its end, find | |
569 | an error, or come back to the initial shift state. */ | |
570 | { | |
571 | mbstate_t mbstate = mbstate_zero; | |
572 | size_t len = 0; | |
573 | size_t fsize; | |
574 | ||
575 | if (! format_end) | |
576 | format_end = f + strlen (f) + 1; | |
577 | fsize = format_end - f; | |
578 | ||
579 | do | |
580 | { | |
581 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); | |
582 | ||
583 | if (bytes == 0) | |
584 | break; | |
585 | ||
586 | if (bytes == (size_t) -2) | |
587 | { | |
588 | len += strlen (f + len); | |
589 | break; | |
590 | } | |
591 | ||
592 | if (bytes == (size_t) -1) | |
593 | { | |
594 | len++; | |
595 | break; | |
596 | } | |
597 | ||
598 | len += bytes; | |
599 | } | |
600 | while (! mbsinit (&mbstate)); | |
601 | ||
602 | cpy (len, f); | |
603 | f += len - 1; | |
604 | continue; | |
605 | } | |
606 | } | |
e65fc94b LC |
607 | |
608 | #else /* ! DO_MULTIBYTE */ | |
609 | ||
610 | /* Either multibyte encodings are not supported, they are | |
1cd4fffc LC |
611 | safe for formats, so any non-'%' byte can be copied through, |
612 | or this is the wide character version. */ | |
e65fc94b | 613 | if (*f != L_('%')) |
1cd4fffc LC |
614 | { |
615 | add1 (*f); | |
616 | continue; | |
617 | } | |
e65fc94b LC |
618 | |
619 | #endif /* ! DO_MULTIBYTE */ | |
620 | ||
621 | /* Check for flags that can modify a format. */ | |
622 | while (1) | |
1cd4fffc LC |
623 | { |
624 | switch (*++f) | |
625 | { | |
626 | /* This influences the number formats. */ | |
627 | case L_('_'): | |
628 | case L_('-'): | |
629 | case L_('0'): | |
630 | pad = *f; | |
631 | continue; | |
632 | ||
633 | /* This changes textual output. */ | |
634 | case L_('^'): | |
635 | to_uppcase = true; | |
636 | continue; | |
637 | case L_('#'): | |
638 | change_case = true; | |
639 | continue; | |
640 | ||
641 | default: | |
642 | break; | |
643 | } | |
644 | break; | |
645 | } | |
e65fc94b LC |
646 | |
647 | /* As a GNU extension we allow to specify the field width. */ | |
648 | if (ISDIGIT (*f)) | |
1cd4fffc LC |
649 | { |
650 | width = 0; | |
651 | do | |
652 | { | |
653 | if (width > INT_MAX / 10 | |
654 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) | |
655 | /* Avoid overflow. */ | |
656 | width = INT_MAX; | |
657 | else | |
658 | { | |
659 | width *= 10; | |
660 | width += *f - L_('0'); | |
661 | } | |
662 | ++f; | |
663 | } | |
664 | while (ISDIGIT (*f)); | |
665 | } | |
e65fc94b LC |
666 | |
667 | /* Check for modifiers. */ | |
668 | switch (*f) | |
1cd4fffc LC |
669 | { |
670 | case L_('E'): | |
671 | case L_('O'): | |
672 | modifier = *f++; | |
673 | break; | |
e65fc94b | 674 | |
1cd4fffc LC |
675 | default: |
676 | modifier = 0; | |
677 | break; | |
678 | } | |
e65fc94b LC |
679 | |
680 | /* Now do the specified format. */ | |
681 | format_char = *f; | |
682 | switch (format_char) | |
1cd4fffc | 683 | { |
e65fc94b | 684 | #define DO_NUMBER(d, v) \ |
1cd4fffc LC |
685 | digits = d; \ |
686 | number_value = v; goto do_number | |
e65fc94b | 687 | #define DO_SIGNED_NUMBER(d, negative, v) \ |
1cd4fffc LC |
688 | digits = d; \ |
689 | negative_number = negative; \ | |
690 | u_number_value = v; goto do_signed_number | |
e65fc94b | 691 | |
1cd4fffc LC |
692 | /* The mask is not what you might think. |
693 | When the ordinal i'th bit is set, insert a colon | |
694 | before the i'th digit of the time zone representation. */ | |
e65fc94b | 695 | #define DO_TZ_OFFSET(d, negative, mask, v) \ |
1cd4fffc LC |
696 | digits = d; \ |
697 | negative_number = negative; \ | |
698 | tz_colon_mask = mask; \ | |
699 | u_number_value = v; goto do_tz_offset | |
e65fc94b | 700 | #define DO_NUMBER_SPACEPAD(d, v) \ |
1cd4fffc LC |
701 | digits = d; \ |
702 | number_value = v; goto do_number_spacepad | |
703 | ||
704 | case L_('%'): | |
705 | if (modifier != 0) | |
706 | goto bad_format; | |
707 | add1 (*f); | |
708 | break; | |
709 | ||
710 | case L_('a'): | |
711 | if (modifier != 0) | |
712 | goto bad_format; | |
713 | if (change_case) | |
714 | { | |
715 | to_uppcase = true; | |
716 | to_lowcase = false; | |
717 | } | |
e65fc94b | 718 | #ifdef _NL_CURRENT |
1cd4fffc LC |
719 | cpy (aw_len, a_wkday); |
720 | break; | |
e65fc94b | 721 | #else |
1cd4fffc | 722 | goto underlying_strftime; |
e65fc94b LC |
723 | #endif |
724 | ||
1cd4fffc LC |
725 | case 'A': |
726 | if (modifier != 0) | |
727 | goto bad_format; | |
728 | if (change_case) | |
729 | { | |
730 | to_uppcase = true; | |
731 | to_lowcase = false; | |
732 | } | |
e65fc94b | 733 | #ifdef _NL_CURRENT |
1cd4fffc LC |
734 | cpy (STRLEN (f_wkday), f_wkday); |
735 | break; | |
e65fc94b | 736 | #else |
1cd4fffc | 737 | goto underlying_strftime; |
e65fc94b LC |
738 | #endif |
739 | ||
1cd4fffc LC |
740 | case L_('b'): |
741 | case L_('h'): | |
742 | if (change_case) | |
743 | { | |
744 | to_uppcase = true; | |
745 | to_lowcase = false; | |
746 | } | |
747 | if (modifier != 0) | |
748 | goto bad_format; | |
e65fc94b | 749 | #ifdef _NL_CURRENT |
1cd4fffc LC |
750 | cpy (am_len, a_month); |
751 | break; | |
e65fc94b | 752 | #else |
1cd4fffc | 753 | goto underlying_strftime; |
e65fc94b LC |
754 | #endif |
755 | ||
1cd4fffc LC |
756 | case L_('B'): |
757 | if (modifier != 0) | |
758 | goto bad_format; | |
759 | if (change_case) | |
760 | { | |
761 | to_uppcase = true; | |
762 | to_lowcase = false; | |
763 | } | |
e65fc94b | 764 | #ifdef _NL_CURRENT |
1cd4fffc LC |
765 | cpy (STRLEN (f_month), f_month); |
766 | break; | |
e65fc94b | 767 | #else |
1cd4fffc | 768 | goto underlying_strftime; |
e65fc94b LC |
769 | #endif |
770 | ||
1cd4fffc LC |
771 | case L_('c'): |
772 | if (modifier == L_('O')) | |
773 | goto bad_format; | |
e65fc94b | 774 | #ifdef _NL_CURRENT |
1cd4fffc LC |
775 | if (! (modifier == 'E' |
776 | && (*(subfmt = | |
777 | (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
778 | NLW(ERA_D_T_FMT))) | |
779 | != '\0'))) | |
780 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
e65fc94b | 781 | #else |
1cd4fffc | 782 | goto underlying_strftime; |
e65fc94b LC |
783 | #endif |
784 | ||
1cd4fffc LC |
785 | subformat: |
786 | { | |
787 | size_t len = strftime_case_ (to_uppcase, | |
788 | NULL, STRFTIME_ARG ((size_t) -1) | |
789 | subfmt, | |
790 | tp extra_args LOCALE_ARG); | |
791 | add (len, strftime_case_ (to_uppcase, p, | |
792 | STRFTIME_ARG (maxsize - i) | |
793 | subfmt, | |
794 | tp extra_args LOCALE_ARG)); | |
795 | } | |
796 | break; | |
e65fc94b LC |
797 | |
798 | #if !(defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) | |
1cd4fffc LC |
799 | underlying_strftime: |
800 | { | |
801 | /* The relevant information is available only via the | |
802 | underlying strftime implementation, so use that. */ | |
803 | char ufmt[5]; | |
804 | char *u = ufmt; | |
805 | char ubuf[1024]; /* enough for any single format in practice */ | |
806 | size_t len; | |
807 | /* Make sure we're calling the actual underlying strftime. | |
808 | In some cases, config.h contains something like | |
809 | "#define strftime rpl_strftime". */ | |
e65fc94b LC |
810 | # ifdef strftime |
811 | # undef strftime | |
1cd4fffc | 812 | size_t strftime (); |
e65fc94b LC |
813 | # endif |
814 | ||
1cd4fffc LC |
815 | /* The space helps distinguish strftime failure from empty |
816 | output. */ | |
817 | *u++ = ' '; | |
818 | *u++ = '%'; | |
819 | if (modifier != 0) | |
820 | *u++ = modifier; | |
821 | *u++ = format_char; | |
822 | *u = '\0'; | |
823 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
824 | if (len != 0) | |
825 | cpy (len - 1, ubuf + 1); | |
826 | } | |
827 | break; | |
e65fc94b LC |
828 | #endif |
829 | ||
1cd4fffc LC |
830 | case L_('C'): |
831 | if (modifier == L_('O')) | |
832 | goto bad_format; | |
833 | if (modifier == L_('E')) | |
834 | { | |
e65fc94b | 835 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
836 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
837 | if (era) | |
838 | { | |
e65fc94b | 839 | # ifdef COMPILE_WIDE |
1cd4fffc LC |
840 | size_t len = __wcslen (era->era_wname); |
841 | cpy (len, era->era_wname); | |
e65fc94b | 842 | # else |
1cd4fffc LC |
843 | size_t len = strlen (era->era_name); |
844 | cpy (len, era->era_name); | |
e65fc94b | 845 | # endif |
1cd4fffc LC |
846 | break; |
847 | } | |
e65fc94b | 848 | #else |
1cd4fffc | 849 | goto underlying_strftime; |
e65fc94b | 850 | #endif |
1cd4fffc | 851 | } |
e65fc94b | 852 | |
1cd4fffc LC |
853 | { |
854 | int century = tp->tm_year / 100 + TM_YEAR_BASE / 100; | |
855 | century -= tp->tm_year % 100 < 0 && 0 < century; | |
856 | DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century); | |
857 | } | |
e65fc94b | 858 | |
1cd4fffc LC |
859 | case L_('x'): |
860 | if (modifier == L_('O')) | |
861 | goto bad_format; | |
e65fc94b | 862 | #ifdef _NL_CURRENT |
1cd4fffc LC |
863 | if (! (modifier == L_('E') |
864 | && (*(subfmt = | |
865 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) | |
866 | != L_('\0')))) | |
867 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
868 | goto subformat; | |
e65fc94b | 869 | #else |
1cd4fffc | 870 | goto underlying_strftime; |
e65fc94b | 871 | #endif |
1cd4fffc LC |
872 | case L_('D'): |
873 | if (modifier != 0) | |
874 | goto bad_format; | |
875 | subfmt = L_("%m/%d/%y"); | |
876 | goto subformat; | |
877 | ||
878 | case L_('d'): | |
879 | if (modifier == L_('E')) | |
880 | goto bad_format; | |
881 | ||
882 | DO_NUMBER (2, tp->tm_mday); | |
883 | ||
884 | case L_('e'): | |
885 | if (modifier == L_('E')) | |
886 | goto bad_format; | |
887 | ||
888 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); | |
889 | ||
890 | /* All numeric formats set DIGITS and NUMBER_VALUE (or U_NUMBER_VALUE) | |
891 | and then jump to one of these labels. */ | |
892 | ||
893 | do_tz_offset: | |
894 | always_output_a_sign = true; | |
895 | goto do_number_body; | |
896 | ||
897 | do_number_spacepad: | |
898 | /* Force `_' flag unless overridden by `0' or `-' flag. */ | |
899 | if (pad != L_('0') && pad != L_('-')) | |
900 | pad = L_('_'); | |
901 | ||
902 | do_number: | |
903 | /* Format NUMBER_VALUE according to the MODIFIER flag. */ | |
904 | negative_number = number_value < 0; | |
905 | u_number_value = number_value; | |
906 | ||
907 | do_signed_number: | |
908 | always_output_a_sign = false; | |
909 | tz_colon_mask = 0; | |
910 | ||
911 | do_number_body: | |
912 | /* Format U_NUMBER_VALUE according to the MODIFIER flag. | |
913 | NEGATIVE_NUMBER is nonzero if the original number was | |
914 | negative; in this case it was converted directly to | |
915 | unsigned int (i.e., modulo (UINT_MAX + 1)) without | |
916 | negating it. */ | |
917 | if (modifier == L_('O') && !negative_number) | |
918 | { | |
e65fc94b | 919 | #ifdef _NL_CURRENT |
1cd4fffc LC |
920 | /* Get the locale specific alternate representation of |
921 | the number. If none exist NULL is returned. */ | |
922 | const CHAR_T *cp = nl_get_alt_digit (u_number_value | |
923 | HELPER_LOCALE_ARG); | |
924 | ||
925 | if (cp != NULL) | |
926 | { | |
927 | size_t digitlen = STRLEN (cp); | |
928 | if (digitlen != 0) | |
929 | { | |
930 | cpy (digitlen, cp); | |
931 | break; | |
932 | } | |
933 | } | |
e65fc94b | 934 | #else |
1cd4fffc | 935 | goto underlying_strftime; |
e65fc94b | 936 | #endif |
1cd4fffc LC |
937 | } |
938 | ||
939 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
940 | ||
941 | if (negative_number) | |
942 | u_number_value = - u_number_value; | |
943 | ||
944 | do | |
945 | { | |
946 | if (tz_colon_mask & 1) | |
947 | *--bufp = ':'; | |
948 | tz_colon_mask >>= 1; | |
949 | *--bufp = u_number_value % 10 + L_('0'); | |
950 | u_number_value /= 10; | |
951 | } | |
952 | while (u_number_value != 0 || tz_colon_mask != 0); | |
953 | ||
954 | do_number_sign_and_padding: | |
955 | if (digits < width) | |
956 | digits = width; | |
957 | ||
958 | sign_char = (negative_number ? L_('-') | |
959 | : always_output_a_sign ? L_('+') | |
960 | : 0); | |
961 | ||
962 | if (pad == L_('-')) | |
963 | { | |
964 | if (sign_char) | |
965 | add1 (sign_char); | |
966 | } | |
967 | else | |
968 | { | |
969 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
970 | - bufp) - !!sign_char; | |
971 | ||
972 | if (padding > 0) | |
973 | { | |
974 | if (pad == L_('_')) | |
975 | { | |
976 | if ((size_t) padding >= maxsize - i) | |
977 | return 0; | |
978 | ||
979 | if (p) | |
980 | memset_space (p, padding); | |
981 | i += padding; | |
982 | width = width > padding ? width - padding : 0; | |
983 | if (sign_char) | |
984 | add1 (sign_char); | |
985 | } | |
986 | else | |
987 | { | |
988 | if ((size_t) digits >= maxsize - i) | |
989 | return 0; | |
990 | ||
991 | if (sign_char) | |
992 | add1 (sign_char); | |
993 | ||
994 | if (p) | |
995 | memset_zero (p, padding); | |
996 | i += padding; | |
997 | width = 0; | |
998 | } | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | if (sign_char) | |
1003 | add1 (sign_char); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); | |
1008 | break; | |
1009 | ||
1010 | case L_('F'): | |
1011 | if (modifier != 0) | |
1012 | goto bad_format; | |
1013 | subfmt = L_("%Y-%m-%d"); | |
1014 | goto subformat; | |
1015 | ||
1016 | case L_('H'): | |
1017 | if (modifier == L_('E')) | |
1018 | goto bad_format; | |
1019 | ||
1020 | DO_NUMBER (2, tp->tm_hour); | |
1021 | ||
1022 | case L_('I'): | |
1023 | if (modifier == L_('E')) | |
1024 | goto bad_format; | |
1025 | ||
1026 | DO_NUMBER (2, hour12); | |
1027 | ||
1028 | case L_('k'): /* GNU extension. */ | |
1029 | if (modifier == L_('E')) | |
1030 | goto bad_format; | |
1031 | ||
1032 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
1033 | ||
1034 | case L_('l'): /* GNU extension. */ | |
1035 | if (modifier == L_('E')) | |
1036 | goto bad_format; | |
1037 | ||
1038 | DO_NUMBER_SPACEPAD (2, hour12); | |
1039 | ||
1040 | case L_('j'): | |
1041 | if (modifier == L_('E')) | |
1042 | goto bad_format; | |
1043 | ||
1044 | DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U); | |
1045 | ||
1046 | case L_('M'): | |
1047 | if (modifier == L_('E')) | |
1048 | goto bad_format; | |
1049 | ||
1050 | DO_NUMBER (2, tp->tm_min); | |
1051 | ||
1052 | case L_('m'): | |
1053 | if (modifier == L_('E')) | |
1054 | goto bad_format; | |
1055 | ||
1056 | DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U); | |
e65fc94b LC |
1057 | |
1058 | #ifndef _LIBC | |
1cd4fffc LC |
1059 | case L_('N'): /* GNU extension. */ |
1060 | if (modifier == L_('E')) | |
1061 | goto bad_format; | |
1062 | ||
1063 | number_value = ns; | |
1064 | if (width == -1) | |
1065 | width = 9; | |
1066 | else | |
1067 | { | |
1068 | /* Take an explicit width less than 9 as a precision. */ | |
1069 | int j; | |
1070 | for (j = width; j < 9; j++) | |
1071 | number_value /= 10; | |
1072 | } | |
1073 | ||
1074 | DO_NUMBER (width, number_value); | |
e65fc94b LC |
1075 | #endif |
1076 | ||
1cd4fffc LC |
1077 | case L_('n'): |
1078 | add1 (L_('\n')); | |
1079 | break; | |
e65fc94b | 1080 | |
1cd4fffc LC |
1081 | case L_('P'): |
1082 | to_lowcase = true; | |
e65fc94b | 1083 | #ifndef _NL_CURRENT |
1cd4fffc | 1084 | format_char = L_('p'); |
e65fc94b | 1085 | #endif |
1cd4fffc LC |
1086 | /* FALLTHROUGH */ |
1087 | ||
1088 | case L_('p'): | |
1089 | if (change_case) | |
1090 | { | |
1091 | to_uppcase = false; | |
1092 | to_lowcase = true; | |
1093 | } | |
e65fc94b | 1094 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1095 | cpy (ap_len, ampm); |
1096 | break; | |
e65fc94b | 1097 | #else |
1cd4fffc | 1098 | goto underlying_strftime; |
e65fc94b LC |
1099 | #endif |
1100 | ||
1cd4fffc LC |
1101 | case L_('R'): |
1102 | subfmt = L_("%H:%M"); | |
1103 | goto subformat; | |
e65fc94b | 1104 | |
1cd4fffc | 1105 | case L_('r'): |
e65fc94b | 1106 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1107 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, |
1108 | NLW(T_FMT_AMPM))) | |
1109 | == L_('\0')) | |
1110 | subfmt = L_("%I:%M:%S %p"); | |
1111 | goto subformat; | |
e65fc94b | 1112 | #else |
1cd4fffc | 1113 | goto underlying_strftime; |
e65fc94b LC |
1114 | #endif |
1115 | ||
1cd4fffc LC |
1116 | case L_('S'): |
1117 | if (modifier == L_('E')) | |
1118 | goto bad_format; | |
e65fc94b | 1119 | |
1cd4fffc | 1120 | DO_NUMBER (2, tp->tm_sec); |
e65fc94b | 1121 | |
1cd4fffc LC |
1122 | case L_('s'): /* GNU extension. */ |
1123 | { | |
1124 | struct tm ltm; | |
1125 | time_t t; | |
e65fc94b | 1126 | |
1cd4fffc LC |
1127 | ltm = *tp; |
1128 | t = mktime (<m); | |
e65fc94b | 1129 | |
1cd4fffc LC |
1130 | /* Generate string value for T using time_t arithmetic; |
1131 | this works even if sizeof (long) < sizeof (time_t). */ | |
e65fc94b | 1132 | |
1cd4fffc LC |
1133 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
1134 | negative_number = t < 0; | |
e65fc94b | 1135 | |
1cd4fffc LC |
1136 | do |
1137 | { | |
1138 | int d = t % 10; | |
1139 | t /= 10; | |
1140 | *--bufp = (negative_number ? -d : d) + L_('0'); | |
1141 | } | |
1142 | while (t != 0); | |
e65fc94b | 1143 | |
1cd4fffc LC |
1144 | digits = 1; |
1145 | always_output_a_sign = false; | |
1146 | goto do_number_sign_and_padding; | |
1147 | } | |
e65fc94b | 1148 | |
1cd4fffc LC |
1149 | case L_('X'): |
1150 | if (modifier == L_('O')) | |
1151 | goto bad_format; | |
e65fc94b | 1152 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1153 | if (! (modifier == L_('E') |
1154 | && (*(subfmt = | |
1155 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) | |
1156 | != L_('\0')))) | |
1157 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1158 | goto subformat; | |
e65fc94b | 1159 | #else |
1cd4fffc | 1160 | goto underlying_strftime; |
e65fc94b | 1161 | #endif |
1cd4fffc LC |
1162 | case L_('T'): |
1163 | subfmt = L_("%H:%M:%S"); | |
1164 | goto subformat; | |
1165 | ||
1166 | case L_('t'): | |
1167 | add1 (L_('\t')); | |
1168 | break; | |
1169 | ||
1170 | case L_('u'): | |
1171 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1172 | ||
1173 | case L_('U'): | |
1174 | if (modifier == L_('E')) | |
1175 | goto bad_format; | |
1176 | ||
1177 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1178 | ||
1179 | case L_('V'): | |
1180 | case L_('g'): | |
1181 | case L_('G'): | |
1182 | if (modifier == L_('E')) | |
1183 | goto bad_format; | |
1184 | { | |
1185 | /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE) | |
1186 | is a leap year, except that YEAR and YEAR - 1 both work | |
1187 | correctly even when (tp->tm_year + TM_YEAR_BASE) would | |
1188 | overflow. */ | |
1189 | int year = (tp->tm_year | |
1190 | + (tp->tm_year < 0 | |
1191 | ? TM_YEAR_BASE % 400 | |
1192 | : TM_YEAR_BASE % 400 - 400)); | |
1193 | int year_adjust = 0; | |
1194 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1195 | ||
1196 | if (days < 0) | |
1197 | { | |
1198 | /* This ISO week belongs to the previous year. */ | |
1199 | year_adjust = -1; | |
1200 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)), | |
1201 | tp->tm_wday); | |
1202 | } | |
1203 | else | |
1204 | { | |
1205 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1206 | tp->tm_wday); | |
1207 | if (0 <= d) | |
1208 | { | |
1209 | /* This ISO week belongs to the next year. */ | |
1210 | year_adjust = 1; | |
1211 | days = d; | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | switch (*f) | |
1216 | { | |
1217 | case L_('g'): | |
1218 | { | |
1219 | int yy = (tp->tm_year % 100 + year_adjust) % 100; | |
1220 | DO_NUMBER (2, (0 <= yy | |
1221 | ? yy | |
1222 | : tp->tm_year < -TM_YEAR_BASE - year_adjust | |
1223 | ? -yy | |
1224 | : yy + 100)); | |
1225 | } | |
1226 | ||
1227 | case L_('G'): | |
1228 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust, | |
1229 | (tp->tm_year + (unsigned int) TM_YEAR_BASE | |
1230 | + year_adjust)); | |
1231 | ||
1232 | default: | |
1233 | DO_NUMBER (2, days / 7 + 1); | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | case L_('W'): | |
1238 | if (modifier == L_('E')) | |
1239 | goto bad_format; | |
1240 | ||
1241 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1242 | ||
1243 | case L_('w'): | |
1244 | if (modifier == L_('E')) | |
1245 | goto bad_format; | |
1246 | ||
1247 | DO_NUMBER (1, tp->tm_wday); | |
1248 | ||
1249 | case L_('Y'): | |
1250 | if (modifier == 'E') | |
1251 | { | |
e65fc94b | 1252 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1253 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1254 | if (era) | |
1255 | { | |
e65fc94b | 1256 | # ifdef COMPILE_WIDE |
1cd4fffc | 1257 | subfmt = era->era_wformat; |
e65fc94b | 1258 | # else |
1cd4fffc | 1259 | subfmt = era->era_format; |
e65fc94b | 1260 | # endif |
1cd4fffc LC |
1261 | goto subformat; |
1262 | } | |
e65fc94b | 1263 | #else |
1cd4fffc | 1264 | goto underlying_strftime; |
e65fc94b | 1265 | #endif |
1cd4fffc LC |
1266 | } |
1267 | if (modifier == L_('O')) | |
1268 | goto bad_format; | |
1269 | else | |
1270 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE, | |
1271 | tp->tm_year + (unsigned int) TM_YEAR_BASE); | |
1272 | ||
1273 | case L_('y'): | |
1274 | if (modifier == L_('E')) | |
1275 | { | |
e65fc94b | 1276 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1277 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1278 | if (era) | |
1279 | { | |
1280 | int delta = tp->tm_year - era->start_date[0]; | |
1281 | DO_NUMBER (1, (era->offset | |
1282 | + delta * era->absolute_direction)); | |
1283 | } | |
e65fc94b | 1284 | #else |
1cd4fffc | 1285 | goto underlying_strftime; |
e65fc94b | 1286 | #endif |
1cd4fffc LC |
1287 | } |
1288 | ||
1289 | { | |
1290 | int yy = tp->tm_year % 100; | |
1291 | if (yy < 0) | |
1292 | yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100; | |
1293 | DO_NUMBER (2, yy); | |
1294 | } | |
1295 | ||
1296 | case L_('Z'): | |
1297 | if (change_case) | |
1298 | { | |
1299 | to_uppcase = false; | |
1300 | to_lowcase = true; | |
1301 | } | |
e65fc94b LC |
1302 | |
1303 | #if HAVE_TZNAME | |
1cd4fffc LC |
1304 | /* The tzset() call might have changed the value. */ |
1305 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1306 | zone = tzname[tp->tm_isdst != 0]; | |
e65fc94b | 1307 | #endif |
1cd4fffc LC |
1308 | if (! zone) |
1309 | zone = ""; | |
e65fc94b LC |
1310 | |
1311 | #ifdef COMPILE_WIDE | |
1cd4fffc LC |
1312 | { |
1313 | /* The zone string is always given in multibyte form. We have | |
1314 | to transform it first. */ | |
1315 | wchar_t *wczone; | |
1316 | size_t len; | |
1317 | widen (zone, wczone, len); | |
1318 | cpy (len, wczone); | |
1319 | } | |
e65fc94b | 1320 | #else |
1cd4fffc | 1321 | cpy (strlen (zone), zone); |
e65fc94b | 1322 | #endif |
1cd4fffc LC |
1323 | break; |
1324 | ||
1325 | case L_(':'): | |
1326 | /* :, ::, and ::: are valid only just before 'z'. | |
1327 | :::: etc. are rejected later. */ | |
1328 | for (colons = 1; f[colons] == L_(':'); colons++) | |
1329 | continue; | |
1330 | if (f[colons] != L_('z')) | |
1331 | goto bad_format; | |
1332 | f += colons; | |
1333 | goto do_z_conversion; | |
1334 | ||
1335 | case L_('z'): | |
1336 | colons = 0; | |
1337 | ||
1338 | do_z_conversion: | |
1339 | if (tp->tm_isdst < 0) | |
1340 | break; | |
1341 | ||
1342 | { | |
1343 | int diff; | |
1344 | int hour_diff; | |
1345 | int min_diff; | |
1346 | int sec_diff; | |
e65fc94b | 1347 | #if HAVE_TM_GMTOFF |
1cd4fffc | 1348 | diff = tp->tm_gmtoff; |
e65fc94b | 1349 | #else |
1cd4fffc LC |
1350 | if (ut) |
1351 | diff = 0; | |
1352 | else | |
1353 | { | |
1354 | struct tm gtm; | |
1355 | struct tm ltm; | |
1356 | time_t lt; | |
1357 | ||
1358 | ltm = *tp; | |
1359 | lt = mktime (<m); | |
1360 | ||
1361 | if (lt == (time_t) -1) | |
1362 | { | |
1363 | /* mktime returns -1 for errors, but -1 is also a | |
1364 | valid time_t value. Check whether an error really | |
1365 | occurred. */ | |
1366 | struct tm tm; | |
1367 | ||
1368 | if (! __localtime_r (<, &tm) | |
1369 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1370 | | (ltm.tm_min ^ tm.tm_min) | |
1371 | | (ltm.tm_hour ^ tm.tm_hour) | |
1372 | | (ltm.tm_mday ^ tm.tm_mday) | |
1373 | | (ltm.tm_mon ^ tm.tm_mon) | |
1374 | | (ltm.tm_year ^ tm.tm_year))) | |
1375 | break; | |
1376 | } | |
1377 | ||
1378 | if (! __gmtime_r (<, >m)) | |
1379 | break; | |
1380 | ||
1381 | diff = tm_diff (<m, >m); | |
1382 | } | |
e65fc94b LC |
1383 | #endif |
1384 | ||
1cd4fffc LC |
1385 | hour_diff = diff / 60 / 60; |
1386 | min_diff = diff / 60 % 60; | |
1387 | sec_diff = diff % 60; | |
1388 | ||
1389 | switch (colons) | |
1390 | { | |
1391 | case 0: /* +hhmm */ | |
1392 | DO_TZ_OFFSET (5, diff < 0, 0, hour_diff * 100 + min_diff); | |
1393 | ||
1394 | case 1: tz_hh_mm: /* +hh:mm */ | |
1395 | DO_TZ_OFFSET (6, diff < 0, 04, hour_diff * 100 + min_diff); | |
1396 | ||
1397 | case 2: tz_hh_mm_ss: /* +hh:mm:ss */ | |
1398 | DO_TZ_OFFSET (9, diff < 0, 024, | |
1399 | hour_diff * 10000 + min_diff * 100 + sec_diff); | |
1400 | ||
1401 | case 3: /* +hh if possible, else +hh:mm, else +hh:mm:ss */ | |
1402 | if (sec_diff != 0) | |
1403 | goto tz_hh_mm_ss; | |
1404 | if (min_diff != 0) | |
1405 | goto tz_hh_mm; | |
1406 | DO_TZ_OFFSET (3, diff < 0, 0, hour_diff); | |
1407 | ||
1408 | default: | |
1409 | goto bad_format; | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1414 | --f; | |
1415 | /* Fall through. */ | |
1416 | default: | |
1417 | /* Unknown format; output the format, including the '%', | |
1418 | since this is most likely the right thing to do if a | |
1419 | multibyte string has been misparsed. */ | |
1420 | bad_format: | |
1421 | { | |
1422 | int flen; | |
1423 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1424 | continue; | |
1425 | cpy (flen, &f[1 - flen]); | |
1426 | } | |
1427 | break; | |
1428 | } | |
e65fc94b LC |
1429 | } |
1430 | ||
1431 | #if ! FPRINTFTIME | |
1432 | if (p && maxsize != 0) | |
1433 | *p = L_('\0'); | |
1434 | #endif | |
1435 | ||
1436 | return i; | |
1437 | } | |
1438 | ||
1439 | /* Write information from TP into S according to the format | |
1440 | string FORMAT, writing no more that MAXSIZE characters | |
1441 | (including the terminating '\0') and returning number of | |
1442 | characters written. If S is NULL, nothing will be written | |
1443 | anywhere, so to determine how many characters would be | |
1444 | written, use NULL for S and (size_t) -1 for MAXSIZE. */ | |
1445 | size_t | |
1446 | my_strftime (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) | |
1cd4fffc LC |
1447 | const CHAR_T *format, |
1448 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
1449 | { |
1450 | return strftime_case_ (false, s, STRFTIME_ARG (maxsize) | |
1cd4fffc | 1451 | format, tp extra_args LOCALE_ARG); |
e65fc94b LC |
1452 | } |
1453 | ||
1454 | #if defined _LIBC && ! FPRINTFTIME | |
1455 | libc_hidden_def (my_strftime) | |
1456 | #endif | |
1457 | ||
1458 | ||
1459 | #if defined emacs && ! FPRINTFTIME | |
1460 | /* For Emacs we have a separate interface which corresponds to the normal | |
1461 | strftime function plus the ut argument, but without the ns argument. */ | |
1462 | size_t | |
1463 | emacs_strftimeu (char *s, size_t maxsize, const char *format, | |
1cd4fffc | 1464 | const struct tm *tp, int ut) |
e65fc94b LC |
1465 | { |
1466 | return my_strftime (s, maxsize, format, tp, ut, 0); | |
1467 | } | |
1468 | #endif |