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61cd9dc9 | 1 | /* Copyright (C) 1991-2001, 2003-2007, 2009-2010 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. | |
51 | But this does not hold for the DEC-HANYU encoding used on OSF/1. */ | |
52 | #if !defined __osf__ | |
53 | # define MULTIBYTE_IS_FORMAT_SAFE 1 | |
54 | #endif | |
55 | #define DO_MULTIBYTE (! MULTIBYTE_IS_FORMAT_SAFE) | |
e65fc94b LC |
56 | |
57 | #if DO_MULTIBYTE | |
4a462e35 | 58 | # include <wchar.h> |
e65fc94b LC |
59 | static const mbstate_t mbstate_zero; |
60 | #endif | |
61 | ||
62 | #include <limits.h> | |
63 | #include <stdbool.h> | |
64 | #include <stddef.h> | |
65 | #include <stdlib.h> | |
66 | #include <string.h> | |
67 | ||
68 | #ifdef COMPILE_WIDE | |
69 | # include <endian.h> | |
70 | # define CHAR_T wchar_t | |
71 | # define UCHAR_T unsigned int | |
72 | # define L_(Str) L##Str | |
73 | # define NLW(Sym) _NL_W##Sym | |
74 | ||
75 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
76 | # define STRLEN(s) __wcslen (s) | |
77 | ||
78 | #else | |
79 | # define CHAR_T char | |
80 | # define UCHAR_T unsigned char | |
81 | # define L_(Str) Str | |
82 | # define NLW(Sym) Sym | |
83 | ||
84 | # define MEMCPY(d, s, n) memcpy (d, s, n) | |
85 | # define STRLEN(s) strlen (s) | |
86 | ||
e65fc94b LC |
87 | #endif |
88 | ||
89 | /* Shift A right by B bits portably, by dividing A by 2**B and | |
90 | truncating towards minus infinity. A and B should be free of side | |
91 | effects, and B should be in the range 0 <= B <= INT_BITS - 2, where | |
92 | INT_BITS is the number of useful bits in an int. GNU code can | |
93 | assume that INT_BITS is at least 32. | |
94 | ||
95 | ISO C99 says that A >> B is implementation-defined if A < 0. Some | |
96 | implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift | |
97 | right in the usual way when A < 0, so SHR falls back on division if | |
98 | ordinary A >> B doesn't seem to be the usual signed shift. */ | |
1cd4fffc LC |
99 | #define SHR(a, b) \ |
100 | (-1 >> 1 == -1 \ | |
101 | ? (a) >> (b) \ | |
e65fc94b LC |
102 | : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) |
103 | ||
104 | /* Bound on length of the string representing an integer type or expression T. | |
105 | Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485; | |
106 | add 1 for integer division truncation; add 1 more for a minus sign | |
107 | if needed. */ | |
108 | #define INT_STRLEN_BOUND(t) \ | |
109 | ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2) | |
110 | ||
111 | #define TM_YEAR_BASE 1900 | |
112 | ||
113 | #ifndef __isleap | |
114 | /* Nonzero if YEAR is a leap year (every 4 years, | |
115 | except every 100th isn't, and every 400th is). */ | |
1cd4fffc | 116 | # define __isleap(year) \ |
e65fc94b LC |
117 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
118 | #endif | |
119 | ||
120 | ||
121 | #ifdef _LIBC | |
122 | # define tzname __tzname | |
123 | # define tzset __tzset | |
124 | #endif | |
125 | ||
126 | #if !HAVE_TM_GMTOFF | |
127 | /* Portable standalone applications should supply a "time.h" that | |
128 | declares a POSIX-compliant localtime_r, for the benefit of older | |
129 | implementations that lack localtime_r or have a nonstandard one. | |
130 | See the gnulib time_r module for one way to implement this. */ | |
131 | # undef __gmtime_r | |
132 | # undef __localtime_r | |
133 | # define __gmtime_r gmtime_r | |
134 | # define __localtime_r localtime_r | |
135 | #endif | |
136 | ||
137 | ||
138 | #ifndef FPRINTFTIME | |
139 | # define FPRINTFTIME 0 | |
140 | #endif | |
141 | ||
142 | #if FPRINTFTIME | |
143 | # define STREAM_OR_CHAR_T FILE | |
144 | # define STRFTIME_ARG(x) /* empty */ | |
145 | #else | |
146 | # define STREAM_OR_CHAR_T CHAR_T | |
147 | # define STRFTIME_ARG(x) x, | |
148 | #endif | |
149 | ||
150 | #if FPRINTFTIME | |
151 | # define memset_byte(P, Len, Byte) \ | |
152 | do { size_t _i; for (_i = 0; _i < Len; _i++) fputc (Byte, P); } while (0) | |
153 | # define memset_space(P, Len) memset_byte (P, Len, ' ') | |
154 | # define memset_zero(P, Len) memset_byte (P, Len, '0') | |
155 | #elif defined COMPILE_WIDE | |
156 | # define memset_space(P, Len) (wmemset (P, L' ', Len), (P) += (Len)) | |
157 | # define memset_zero(P, Len) (wmemset (P, L'0', Len), (P) += (Len)) | |
158 | #else | |
159 | # define memset_space(P, Len) (memset (P, ' ', Len), (P) += (Len)) | |
160 | # define memset_zero(P, Len) (memset (P, '0', Len), (P) += (Len)) | |
161 | #endif | |
162 | ||
163 | #if FPRINTFTIME | |
164 | # define advance(P, N) | |
165 | #else | |
166 | # define advance(P, N) ((P) += (N)) | |
167 | #endif | |
168 | ||
1cd4fffc LC |
169 | #define add(n, f) \ |
170 | do \ | |
171 | { \ | |
172 | int _n = (n); \ | |
173 | int _delta = width - _n; \ | |
174 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
175 | if ((size_t) _incr >= maxsize - i) \ | |
176 | return 0; \ | |
177 | if (p) \ | |
178 | { \ | |
179 | if (digits == 0 && _delta > 0) \ | |
180 | { \ | |
181 | if (pad == L_('0')) \ | |
182 | memset_zero (p, _delta); \ | |
183 | else \ | |
184 | memset_space (p, _delta); \ | |
185 | } \ | |
186 | f; \ | |
187 | advance (p, _n); \ | |
188 | } \ | |
189 | i += _incr; \ | |
e65fc94b LC |
190 | } while (0) |
191 | ||
192 | #if FPRINTFTIME | |
193 | # define add1(C) add (1, fputc (C, p)) | |
194 | #else | |
195 | # define add1(C) add (1, *p = C) | |
196 | #endif | |
197 | ||
198 | #if FPRINTFTIME | |
199 | # define cpy(n, s) \ | |
1cd4fffc LC |
200 | add ((n), \ |
201 | do \ | |
202 | { \ | |
203 | if (to_lowcase) \ | |
204 | fwrite_lowcase (p, (s), _n); \ | |
205 | else if (to_uppcase) \ | |
206 | fwrite_uppcase (p, (s), _n); \ | |
207 | else \ | |
208 | { \ | |
209 | /* We are ignoring the value of fwrite here, in spite of the \ | |
210 | fact that technically, that may not be valid: the fwrite \ | |
211 | specification in POSIX 2008 defers to that of fputc, which \ | |
212 | is intended to be consistent with the one from ISO C, \ | |
213 | which permits failure due to ENOMEM *without* setting the \ | |
214 | stream's error indicator. */ \ | |
215 | ignore_value (fwrite ((s), _n, 1, p)); \ | |
216 | } \ | |
217 | } \ | |
218 | while (0) \ | |
8912421c | 219 | ) |
e65fc94b | 220 | #else |
1cd4fffc LC |
221 | # define cpy(n, s) \ |
222 | add ((n), \ | |
223 | if (to_lowcase) \ | |
224 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ | |
225 | else if (to_uppcase) \ | |
226 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ | |
227 | else \ | |
228 | MEMCPY ((void *) p, (void const *) (s), _n)) | |
e65fc94b LC |
229 | #endif |
230 | ||
231 | #ifdef COMPILE_WIDE | |
232 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL | |
233 | # undef __mbsrtowcs_l | |
234 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) | |
235 | # endif | |
236 | # define widen(os, ws, l) \ | |
1cd4fffc LC |
237 | { \ |
238 | mbstate_t __st; \ | |
239 | const char *__s = os; \ | |
240 | memset (&__st, '\0', sizeof (__st)); \ | |
241 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ | |
242 | ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \ | |
243 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ | |
e65fc94b LC |
244 | } |
245 | #endif | |
246 | ||
247 | ||
248 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
249 | /* We use this code also for the extended locale handling where the | |
250 | function gets as an additional argument the locale which has to be | |
251 | used. To access the values we have to redefine the _NL_CURRENT | |
252 | macro. */ | |
1cd4fffc LC |
253 | # define strftime __strftime_l |
254 | # define wcsftime __wcsftime_l | |
e65fc94b LC |
255 | # undef _NL_CURRENT |
256 | # define _NL_CURRENT(category, item) \ | |
257 | (current->values[_NL_ITEM_INDEX (item)].string) | |
258 | # define LOCALE_ARG , loc | |
259 | # define LOCALE_PARAM_PROTO , __locale_t loc | |
260 | # define HELPER_LOCALE_ARG , current | |
261 | #else | |
262 | # define LOCALE_PARAM_PROTO | |
263 | # define LOCALE_ARG | |
264 | # ifdef _LIBC | |
265 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) | |
266 | # else | |
267 | # define HELPER_LOCALE_ARG | |
268 | # endif | |
269 | #endif | |
270 | ||
271 | #ifdef COMPILE_WIDE | |
272 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
273 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) | |
274 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) | |
275 | # else | |
276 | # define TOUPPER(Ch, L) towupper (Ch) | |
277 | # define TOLOWER(Ch, L) towlower (Ch) | |
278 | # endif | |
279 | #else | |
280 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
281 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) | |
282 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) | |
283 | # else | |
284 | # define TOUPPER(Ch, L) toupper (Ch) | |
285 | # define TOLOWER(Ch, L) tolower (Ch) | |
286 | # endif | |
287 | #endif | |
288 | /* We don't use `isdigit' here since the locale dependent | |
289 | interpretation is not what we want here. We only need to accept | |
290 | the arabic digits in the ASCII range. One day there is perhaps a | |
291 | more reliable way to accept other sets of digits. */ | |
292 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) | |
293 | ||
294 | #if FPRINTFTIME | |
295 | static void | |
296 | fwrite_lowcase (FILE *fp, const CHAR_T *src, size_t len) | |
297 | { | |
298 | while (len-- > 0) | |
299 | { | |
300 | fputc (TOLOWER ((UCHAR_T) *src, loc), fp); | |
301 | ++src; | |
302 | } | |
303 | } | |
304 | ||
305 | static void | |
306 | fwrite_uppcase (FILE *fp, const CHAR_T *src, size_t len) | |
307 | { | |
308 | while (len-- > 0) | |
309 | { | |
310 | fputc (TOUPPER ((UCHAR_T) *src, loc), fp); | |
311 | ++src; | |
312 | } | |
313 | } | |
314 | #else | |
315 | static CHAR_T * | |
316 | memcpy_lowcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 317 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
318 | { |
319 | while (len-- > 0) | |
320 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); | |
321 | return dest; | |
322 | } | |
323 | ||
324 | static CHAR_T * | |
325 | memcpy_uppcase (CHAR_T *dest, const CHAR_T *src, | |
1cd4fffc | 326 | size_t len LOCALE_PARAM_PROTO) |
e65fc94b LC |
327 | { |
328 | while (len-- > 0) | |
329 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); | |
330 | return dest; | |
331 | } | |
332 | #endif | |
333 | ||
334 | ||
335 | #if ! HAVE_TM_GMTOFF | |
336 | /* Yield the difference between *A and *B, | |
337 | measured in seconds, ignoring leap seconds. */ | |
338 | # define tm_diff ftime_tm_diff | |
339 | static int | |
340 | tm_diff (const struct tm *a, const struct tm *b) | |
341 | { | |
342 | /* Compute intervening leap days correctly even if year is negative. | |
343 | Take care to avoid int overflow in leap day calculations, | |
344 | but it's OK to assume that A and B are close to each other. */ | |
345 | int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); | |
346 | int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); | |
347 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
348 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
349 | int a400 = SHR (a100, 2); | |
350 | int b400 = SHR (b100, 2); | |
351 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
352 | int years = a->tm_year - b->tm_year; | |
353 | int days = (365 * years + intervening_leap_days | |
1cd4fffc | 354 | + (a->tm_yday - b->tm_yday)); |
e65fc94b | 355 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
1cd4fffc LC |
356 | + (a->tm_min - b->tm_min)) |
357 | + (a->tm_sec - b->tm_sec)); | |
e65fc94b LC |
358 | } |
359 | #endif /* ! HAVE_TM_GMTOFF */ | |
360 | ||
361 | ||
362 | ||
363 | /* The number of days from the first day of the first ISO week of this | |
364 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
365 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
366 | be as small as YDAY_MINIMUM. */ | |
367 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
368 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
369 | #define YDAY_MINIMUM (-366) | |
370 | #ifdef __GNUC__ | |
371 | __inline__ | |
372 | #endif | |
373 | static int | |
374 | iso_week_days (int yday, int wday) | |
375 | { | |
376 | /* Add enough to the first operand of % to make it nonnegative. */ | |
377 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
378 | return (yday | |
1cd4fffc LC |
379 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
380 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
e65fc94b LC |
381 | } |
382 | ||
383 | ||
384 | /* When compiling this file, GNU applications can #define my_strftime | |
385 | to a symbol (typically nstrftime) to get an extended strftime with | |
386 | extra arguments UT and NS. Emacs is a special case for now, but | |
387 | this Emacs-specific code can be removed once Emacs's config.h | |
388 | defines my_strftime. */ | |
389 | #if defined emacs && !defined my_strftime | |
390 | # define my_strftime nstrftime | |
391 | #endif | |
392 | ||
393 | #if FPRINTFTIME | |
394 | # undef my_strftime | |
395 | # define my_strftime fprintftime | |
396 | #endif | |
397 | ||
398 | #ifdef my_strftime | |
399 | # define extra_args , ut, ns | |
400 | # define extra_args_spec , int ut, int ns | |
401 | #else | |
402 | # if defined COMPILE_WIDE | |
403 | # define my_strftime wcsftime | |
404 | # define nl_get_alt_digit _nl_get_walt_digit | |
405 | # else | |
406 | # define my_strftime strftime | |
407 | # define nl_get_alt_digit _nl_get_alt_digit | |
408 | # endif | |
409 | # define extra_args | |
410 | # define extra_args_spec | |
411 | /* We don't have this information in general. */ | |
412 | # define ut 0 | |
413 | # define ns 0 | |
414 | #endif | |
415 | ||
416 | ||
417 | /* Just like my_strftime, below, but with one more parameter, UPCASE, | |
418 | to indicate that the result should be converted to upper case. */ | |
419 | static size_t | |
420 | strftime_case_ (bool upcase, STREAM_OR_CHAR_T *s, | |
1cd4fffc LC |
421 | STRFTIME_ARG (size_t maxsize) |
422 | const CHAR_T *format, | |
423 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
424 | { |
425 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL | |
426 | struct locale_data *const current = loc->__locales[LC_TIME]; | |
427 | #endif | |
428 | #if FPRINTFTIME | |
429 | size_t maxsize = (size_t) -1; | |
430 | #endif | |
431 | ||
432 | int hour12 = tp->tm_hour; | |
433 | #ifdef _NL_CURRENT | |
434 | /* We cannot make the following values variables since we must delay | |
435 | the evaluation of these values until really needed since some | |
436 | expressions might not be valid in every situation. The `struct tm' | |
437 | might be generated by a strptime() call that initialized | |
438 | only a few elements. Dereference the pointers only if the format | |
439 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
440 | # define a_wkday \ | |
441 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
442 | # define f_wkday \ | |
443 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
444 | # define a_month \ | |
445 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
446 | # define f_month \ | |
447 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
448 | # define ampm \ | |
1cd4fffc LC |
449 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ |
450 | ? NLW(PM_STR) : NLW(AM_STR))) | |
e65fc94b LC |
451 | |
452 | # define aw_len STRLEN (a_wkday) | |
453 | # define am_len STRLEN (a_month) | |
454 | # define ap_len STRLEN (ampm) | |
455 | #endif | |
456 | const char *zone; | |
457 | size_t i = 0; | |
458 | STREAM_OR_CHAR_T *p = s; | |
459 | const CHAR_T *f; | |
460 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
461 | const char *format_end = NULL; | |
462 | #endif | |
463 | ||
464 | #if ! defined _LIBC && ! HAVE_RUN_TZSET_TEST | |
465 | /* Solaris 2.5.x and 2.6 tzset sometimes modify the storage returned | |
466 | by localtime. On such systems, we must either use the tzset and | |
467 | localtime wrappers to work around the bug (which sets | |
468 | HAVE_RUN_TZSET_TEST) or make a copy of the structure. */ | |
469 | struct tm copy = *tp; | |
470 | tp = © | |
471 | #endif | |
472 | ||
473 | zone = NULL; | |
474 | #if HAVE_TM_ZONE | |
475 | /* The POSIX test suite assumes that setting | |
476 | the environment variable TZ to a new value before calling strftime() | |
477 | will influence the result (the %Z format) even if the information in | |
478 | TP is computed with a totally different time zone. | |
479 | This is bogus: though POSIX allows bad behavior like this, | |
480 | POSIX does not require it. Do the right thing instead. */ | |
481 | zone = (const char *) tp->tm_zone; | |
482 | #endif | |
483 | #if HAVE_TZNAME | |
484 | if (ut) | |
485 | { | |
486 | if (! (zone && *zone)) | |
1cd4fffc | 487 | zone = "GMT"; |
e65fc94b LC |
488 | } |
489 | else | |
490 | { | |
491 | /* POSIX.1 requires that local time zone information be used as | |
1cd4fffc | 492 | though strftime called tzset. */ |
e65fc94b LC |
493 | # if HAVE_TZSET |
494 | tzset (); | |
495 | # endif | |
496 | } | |
497 | #endif | |
498 | ||
499 | if (hour12 > 12) | |
500 | hour12 -= 12; | |
501 | else | |
502 | if (hour12 == 0) | |
503 | hour12 = 12; | |
504 | ||
505 | for (f = format; *f != '\0'; ++f) | |
506 | { | |
1cd4fffc LC |
507 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
508 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
509 | int digits = 0; /* Max digits for numeric format. */ | |
510 | int number_value; /* Numeric value to be printed. */ | |
e65fc94b | 511 | unsigned int u_number_value; /* (unsigned int) number_value. */ |
1cd4fffc | 512 | bool negative_number; /* The number is negative. */ |
e65fc94b | 513 | bool always_output_a_sign; /* +/- should always be output. */ |
1cd4fffc | 514 | int tz_colon_mask; /* Bitmask of where ':' should appear. */ |
e65fc94b LC |
515 | const CHAR_T *subfmt; |
516 | CHAR_T sign_char; | |
517 | CHAR_T *bufp; | |
518 | CHAR_T buf[1 | |
1cd4fffc LC |
519 | + 2 /* for the two colons in a %::z or %:::z time zone */ |
520 | + (sizeof (int) < sizeof (time_t) | |
521 | ? INT_STRLEN_BOUND (time_t) | |
522 | : INT_STRLEN_BOUND (int))]; | |
e65fc94b LC |
523 | int width = -1; |
524 | bool to_lowcase = false; | |
525 | bool to_uppcase = upcase; | |
526 | size_t colons; | |
527 | bool change_case = false; | |
528 | int format_char; | |
529 | ||
530 | #if DO_MULTIBYTE && !defined COMPILE_WIDE | |
531 | switch (*f) | |
1cd4fffc LC |
532 | { |
533 | case L_('%'): | |
534 | break; | |
535 | ||
536 | case L_('\b'): case L_('\t'): case L_('\n'): | |
537 | case L_('\v'): case L_('\f'): case L_('\r'): | |
538 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
539 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
540 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
541 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
542 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
543 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
544 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
545 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
546 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
547 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
548 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
549 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
550 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
551 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
552 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
553 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
554 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
555 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
556 | case L_('~'): | |
557 | /* The C Standard requires these 98 characters (plus '%') to | |
558 | be in the basic execution character set. None of these | |
559 | characters can start a multibyte sequence, so they need | |
560 | not be analyzed further. */ | |
561 | add1 (*f); | |
562 | continue; | |
563 | ||
564 | default: | |
565 | /* Copy this multibyte sequence until we reach its end, find | |
566 | an error, or come back to the initial shift state. */ | |
567 | { | |
568 | mbstate_t mbstate = mbstate_zero; | |
569 | size_t len = 0; | |
570 | size_t fsize; | |
571 | ||
572 | if (! format_end) | |
573 | format_end = f + strlen (f) + 1; | |
574 | fsize = format_end - f; | |
575 | ||
576 | do | |
577 | { | |
578 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); | |
579 | ||
580 | if (bytes == 0) | |
581 | break; | |
582 | ||
583 | if (bytes == (size_t) -2) | |
584 | { | |
585 | len += strlen (f + len); | |
586 | break; | |
587 | } | |
588 | ||
589 | if (bytes == (size_t) -1) | |
590 | { | |
591 | len++; | |
592 | break; | |
593 | } | |
594 | ||
595 | len += bytes; | |
596 | } | |
597 | while (! mbsinit (&mbstate)); | |
598 | ||
599 | cpy (len, f); | |
600 | f += len - 1; | |
601 | continue; | |
602 | } | |
603 | } | |
e65fc94b LC |
604 | |
605 | #else /* ! DO_MULTIBYTE */ | |
606 | ||
607 | /* Either multibyte encodings are not supported, they are | |
1cd4fffc LC |
608 | safe for formats, so any non-'%' byte can be copied through, |
609 | or this is the wide character version. */ | |
e65fc94b | 610 | if (*f != L_('%')) |
1cd4fffc LC |
611 | { |
612 | add1 (*f); | |
613 | continue; | |
614 | } | |
e65fc94b LC |
615 | |
616 | #endif /* ! DO_MULTIBYTE */ | |
617 | ||
618 | /* Check for flags that can modify a format. */ | |
619 | while (1) | |
1cd4fffc LC |
620 | { |
621 | switch (*++f) | |
622 | { | |
623 | /* This influences the number formats. */ | |
624 | case L_('_'): | |
625 | case L_('-'): | |
626 | case L_('0'): | |
627 | pad = *f; | |
628 | continue; | |
629 | ||
630 | /* This changes textual output. */ | |
631 | case L_('^'): | |
632 | to_uppcase = true; | |
633 | continue; | |
634 | case L_('#'): | |
635 | change_case = true; | |
636 | continue; | |
637 | ||
638 | default: | |
639 | break; | |
640 | } | |
641 | break; | |
642 | } | |
e65fc94b LC |
643 | |
644 | /* As a GNU extension we allow to specify the field width. */ | |
645 | if (ISDIGIT (*f)) | |
1cd4fffc LC |
646 | { |
647 | width = 0; | |
648 | do | |
649 | { | |
650 | if (width > INT_MAX / 10 | |
651 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) | |
652 | /* Avoid overflow. */ | |
653 | width = INT_MAX; | |
654 | else | |
655 | { | |
656 | width *= 10; | |
657 | width += *f - L_('0'); | |
658 | } | |
659 | ++f; | |
660 | } | |
661 | while (ISDIGIT (*f)); | |
662 | } | |
e65fc94b LC |
663 | |
664 | /* Check for modifiers. */ | |
665 | switch (*f) | |
1cd4fffc LC |
666 | { |
667 | case L_('E'): | |
668 | case L_('O'): | |
669 | modifier = *f++; | |
670 | break; | |
e65fc94b | 671 | |
1cd4fffc LC |
672 | default: |
673 | modifier = 0; | |
674 | break; | |
675 | } | |
e65fc94b LC |
676 | |
677 | /* Now do the specified format. */ | |
678 | format_char = *f; | |
679 | switch (format_char) | |
1cd4fffc | 680 | { |
e65fc94b | 681 | #define DO_NUMBER(d, v) \ |
1cd4fffc LC |
682 | digits = d; \ |
683 | number_value = v; goto do_number | |
e65fc94b | 684 | #define DO_SIGNED_NUMBER(d, negative, v) \ |
1cd4fffc LC |
685 | digits = d; \ |
686 | negative_number = negative; \ | |
687 | u_number_value = v; goto do_signed_number | |
e65fc94b | 688 | |
1cd4fffc LC |
689 | /* The mask is not what you might think. |
690 | When the ordinal i'th bit is set, insert a colon | |
691 | before the i'th digit of the time zone representation. */ | |
e65fc94b | 692 | #define DO_TZ_OFFSET(d, negative, mask, v) \ |
1cd4fffc LC |
693 | digits = d; \ |
694 | negative_number = negative; \ | |
695 | tz_colon_mask = mask; \ | |
696 | u_number_value = v; goto do_tz_offset | |
e65fc94b | 697 | #define DO_NUMBER_SPACEPAD(d, v) \ |
1cd4fffc LC |
698 | digits = d; \ |
699 | number_value = v; goto do_number_spacepad | |
700 | ||
701 | case L_('%'): | |
702 | if (modifier != 0) | |
703 | goto bad_format; | |
704 | add1 (*f); | |
705 | break; | |
706 | ||
707 | case L_('a'): | |
708 | if (modifier != 0) | |
709 | goto bad_format; | |
710 | if (change_case) | |
711 | { | |
712 | to_uppcase = true; | |
713 | to_lowcase = false; | |
714 | } | |
e65fc94b | 715 | #ifdef _NL_CURRENT |
1cd4fffc LC |
716 | cpy (aw_len, a_wkday); |
717 | break; | |
e65fc94b | 718 | #else |
1cd4fffc | 719 | goto underlying_strftime; |
e65fc94b LC |
720 | #endif |
721 | ||
1cd4fffc LC |
722 | case 'A': |
723 | if (modifier != 0) | |
724 | goto bad_format; | |
725 | if (change_case) | |
726 | { | |
727 | to_uppcase = true; | |
728 | to_lowcase = false; | |
729 | } | |
e65fc94b | 730 | #ifdef _NL_CURRENT |
1cd4fffc LC |
731 | cpy (STRLEN (f_wkday), f_wkday); |
732 | break; | |
e65fc94b | 733 | #else |
1cd4fffc | 734 | goto underlying_strftime; |
e65fc94b LC |
735 | #endif |
736 | ||
1cd4fffc LC |
737 | case L_('b'): |
738 | case L_('h'): | |
739 | if (change_case) | |
740 | { | |
741 | to_uppcase = true; | |
742 | to_lowcase = false; | |
743 | } | |
744 | if (modifier != 0) | |
745 | goto bad_format; | |
e65fc94b | 746 | #ifdef _NL_CURRENT |
1cd4fffc LC |
747 | cpy (am_len, a_month); |
748 | break; | |
e65fc94b | 749 | #else |
1cd4fffc | 750 | goto underlying_strftime; |
e65fc94b LC |
751 | #endif |
752 | ||
1cd4fffc LC |
753 | case L_('B'): |
754 | if (modifier != 0) | |
755 | goto bad_format; | |
756 | if (change_case) | |
757 | { | |
758 | to_uppcase = true; | |
759 | to_lowcase = false; | |
760 | } | |
e65fc94b | 761 | #ifdef _NL_CURRENT |
1cd4fffc LC |
762 | cpy (STRLEN (f_month), f_month); |
763 | break; | |
e65fc94b | 764 | #else |
1cd4fffc | 765 | goto underlying_strftime; |
e65fc94b LC |
766 | #endif |
767 | ||
1cd4fffc LC |
768 | case L_('c'): |
769 | if (modifier == L_('O')) | |
770 | goto bad_format; | |
e65fc94b | 771 | #ifdef _NL_CURRENT |
1cd4fffc LC |
772 | if (! (modifier == 'E' |
773 | && (*(subfmt = | |
774 | (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
775 | NLW(ERA_D_T_FMT))) | |
776 | != '\0'))) | |
777 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
e65fc94b | 778 | #else |
1cd4fffc | 779 | goto underlying_strftime; |
e65fc94b LC |
780 | #endif |
781 | ||
1cd4fffc LC |
782 | subformat: |
783 | { | |
784 | size_t len = strftime_case_ (to_uppcase, | |
785 | NULL, STRFTIME_ARG ((size_t) -1) | |
786 | subfmt, | |
787 | tp extra_args LOCALE_ARG); | |
788 | add (len, strftime_case_ (to_uppcase, p, | |
789 | STRFTIME_ARG (maxsize - i) | |
790 | subfmt, | |
791 | tp extra_args LOCALE_ARG)); | |
792 | } | |
793 | break; | |
e65fc94b LC |
794 | |
795 | #if !(defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) | |
1cd4fffc LC |
796 | underlying_strftime: |
797 | { | |
798 | /* The relevant information is available only via the | |
799 | underlying strftime implementation, so use that. */ | |
800 | char ufmt[5]; | |
801 | char *u = ufmt; | |
802 | char ubuf[1024]; /* enough for any single format in practice */ | |
803 | size_t len; | |
804 | /* Make sure we're calling the actual underlying strftime. | |
805 | In some cases, config.h contains something like | |
806 | "#define strftime rpl_strftime". */ | |
e65fc94b LC |
807 | # ifdef strftime |
808 | # undef strftime | |
1cd4fffc | 809 | size_t strftime (); |
e65fc94b LC |
810 | # endif |
811 | ||
1cd4fffc LC |
812 | /* The space helps distinguish strftime failure from empty |
813 | output. */ | |
814 | *u++ = ' '; | |
815 | *u++ = '%'; | |
816 | if (modifier != 0) | |
817 | *u++ = modifier; | |
818 | *u++ = format_char; | |
819 | *u = '\0'; | |
820 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
821 | if (len != 0) | |
822 | cpy (len - 1, ubuf + 1); | |
823 | } | |
824 | break; | |
e65fc94b LC |
825 | #endif |
826 | ||
1cd4fffc LC |
827 | case L_('C'): |
828 | if (modifier == L_('O')) | |
829 | goto bad_format; | |
830 | if (modifier == L_('E')) | |
831 | { | |
e65fc94b | 832 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
833 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
834 | if (era) | |
835 | { | |
e65fc94b | 836 | # ifdef COMPILE_WIDE |
1cd4fffc LC |
837 | size_t len = __wcslen (era->era_wname); |
838 | cpy (len, era->era_wname); | |
e65fc94b | 839 | # else |
1cd4fffc LC |
840 | size_t len = strlen (era->era_name); |
841 | cpy (len, era->era_name); | |
e65fc94b | 842 | # endif |
1cd4fffc LC |
843 | break; |
844 | } | |
e65fc94b | 845 | #else |
1cd4fffc | 846 | goto underlying_strftime; |
e65fc94b | 847 | #endif |
1cd4fffc | 848 | } |
e65fc94b | 849 | |
1cd4fffc LC |
850 | { |
851 | int century = tp->tm_year / 100 + TM_YEAR_BASE / 100; | |
852 | century -= tp->tm_year % 100 < 0 && 0 < century; | |
853 | DO_SIGNED_NUMBER (2, tp->tm_year < - TM_YEAR_BASE, century); | |
854 | } | |
e65fc94b | 855 | |
1cd4fffc LC |
856 | case L_('x'): |
857 | if (modifier == L_('O')) | |
858 | goto bad_format; | |
e65fc94b | 859 | #ifdef _NL_CURRENT |
1cd4fffc LC |
860 | if (! (modifier == L_('E') |
861 | && (*(subfmt = | |
862 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) | |
863 | != L_('\0')))) | |
864 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
865 | goto subformat; | |
e65fc94b | 866 | #else |
1cd4fffc | 867 | goto underlying_strftime; |
e65fc94b | 868 | #endif |
1cd4fffc LC |
869 | case L_('D'): |
870 | if (modifier != 0) | |
871 | goto bad_format; | |
872 | subfmt = L_("%m/%d/%y"); | |
873 | goto subformat; | |
874 | ||
875 | case L_('d'): | |
876 | if (modifier == L_('E')) | |
877 | goto bad_format; | |
878 | ||
879 | DO_NUMBER (2, tp->tm_mday); | |
880 | ||
881 | case L_('e'): | |
882 | if (modifier == L_('E')) | |
883 | goto bad_format; | |
884 | ||
885 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); | |
886 | ||
887 | /* All numeric formats set DIGITS and NUMBER_VALUE (or U_NUMBER_VALUE) | |
888 | and then jump to one of these labels. */ | |
889 | ||
890 | do_tz_offset: | |
891 | always_output_a_sign = true; | |
892 | goto do_number_body; | |
893 | ||
894 | do_number_spacepad: | |
895 | /* Force `_' flag unless overridden by `0' or `-' flag. */ | |
896 | if (pad != L_('0') && pad != L_('-')) | |
897 | pad = L_('_'); | |
898 | ||
899 | do_number: | |
900 | /* Format NUMBER_VALUE according to the MODIFIER flag. */ | |
901 | negative_number = number_value < 0; | |
902 | u_number_value = number_value; | |
903 | ||
904 | do_signed_number: | |
905 | always_output_a_sign = false; | |
906 | tz_colon_mask = 0; | |
907 | ||
908 | do_number_body: | |
909 | /* Format U_NUMBER_VALUE according to the MODIFIER flag. | |
910 | NEGATIVE_NUMBER is nonzero if the original number was | |
911 | negative; in this case it was converted directly to | |
912 | unsigned int (i.e., modulo (UINT_MAX + 1)) without | |
913 | negating it. */ | |
914 | if (modifier == L_('O') && !negative_number) | |
915 | { | |
e65fc94b | 916 | #ifdef _NL_CURRENT |
1cd4fffc LC |
917 | /* Get the locale specific alternate representation of |
918 | the number. If none exist NULL is returned. */ | |
919 | const CHAR_T *cp = nl_get_alt_digit (u_number_value | |
920 | HELPER_LOCALE_ARG); | |
921 | ||
922 | if (cp != NULL) | |
923 | { | |
924 | size_t digitlen = STRLEN (cp); | |
925 | if (digitlen != 0) | |
926 | { | |
927 | cpy (digitlen, cp); | |
928 | break; | |
929 | } | |
930 | } | |
e65fc94b | 931 | #else |
1cd4fffc | 932 | goto underlying_strftime; |
e65fc94b | 933 | #endif |
1cd4fffc LC |
934 | } |
935 | ||
936 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
937 | ||
938 | if (negative_number) | |
939 | u_number_value = - u_number_value; | |
940 | ||
941 | do | |
942 | { | |
943 | if (tz_colon_mask & 1) | |
944 | *--bufp = ':'; | |
945 | tz_colon_mask >>= 1; | |
946 | *--bufp = u_number_value % 10 + L_('0'); | |
947 | u_number_value /= 10; | |
948 | } | |
949 | while (u_number_value != 0 || tz_colon_mask != 0); | |
950 | ||
951 | do_number_sign_and_padding: | |
952 | if (digits < width) | |
953 | digits = width; | |
954 | ||
955 | sign_char = (negative_number ? L_('-') | |
956 | : always_output_a_sign ? L_('+') | |
957 | : 0); | |
958 | ||
959 | if (pad == L_('-')) | |
960 | { | |
961 | if (sign_char) | |
962 | add1 (sign_char); | |
963 | } | |
964 | else | |
965 | { | |
966 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
967 | - bufp) - !!sign_char; | |
968 | ||
969 | if (padding > 0) | |
970 | { | |
971 | if (pad == L_('_')) | |
972 | { | |
973 | if ((size_t) padding >= maxsize - i) | |
974 | return 0; | |
975 | ||
976 | if (p) | |
977 | memset_space (p, padding); | |
978 | i += padding; | |
979 | width = width > padding ? width - padding : 0; | |
980 | if (sign_char) | |
981 | add1 (sign_char); | |
982 | } | |
983 | else | |
984 | { | |
985 | if ((size_t) digits >= maxsize - i) | |
986 | return 0; | |
987 | ||
988 | if (sign_char) | |
989 | add1 (sign_char); | |
990 | ||
991 | if (p) | |
992 | memset_zero (p, padding); | |
993 | i += padding; | |
994 | width = 0; | |
995 | } | |
996 | } | |
997 | else | |
998 | { | |
999 | if (sign_char) | |
1000 | add1 (sign_char); | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); | |
1005 | break; | |
1006 | ||
1007 | case L_('F'): | |
1008 | if (modifier != 0) | |
1009 | goto bad_format; | |
1010 | subfmt = L_("%Y-%m-%d"); | |
1011 | goto subformat; | |
1012 | ||
1013 | case L_('H'): | |
1014 | if (modifier == L_('E')) | |
1015 | goto bad_format; | |
1016 | ||
1017 | DO_NUMBER (2, tp->tm_hour); | |
1018 | ||
1019 | case L_('I'): | |
1020 | if (modifier == L_('E')) | |
1021 | goto bad_format; | |
1022 | ||
1023 | DO_NUMBER (2, hour12); | |
1024 | ||
1025 | case L_('k'): /* GNU extension. */ | |
1026 | if (modifier == L_('E')) | |
1027 | goto bad_format; | |
1028 | ||
1029 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
1030 | ||
1031 | case L_('l'): /* GNU extension. */ | |
1032 | if (modifier == L_('E')) | |
1033 | goto bad_format; | |
1034 | ||
1035 | DO_NUMBER_SPACEPAD (2, hour12); | |
1036 | ||
1037 | case L_('j'): | |
1038 | if (modifier == L_('E')) | |
1039 | goto bad_format; | |
1040 | ||
1041 | DO_SIGNED_NUMBER (3, tp->tm_yday < -1, tp->tm_yday + 1U); | |
1042 | ||
1043 | case L_('M'): | |
1044 | if (modifier == L_('E')) | |
1045 | goto bad_format; | |
1046 | ||
1047 | DO_NUMBER (2, tp->tm_min); | |
1048 | ||
1049 | case L_('m'): | |
1050 | if (modifier == L_('E')) | |
1051 | goto bad_format; | |
1052 | ||
1053 | DO_SIGNED_NUMBER (2, tp->tm_mon < -1, tp->tm_mon + 1U); | |
e65fc94b LC |
1054 | |
1055 | #ifndef _LIBC | |
1cd4fffc LC |
1056 | case L_('N'): /* GNU extension. */ |
1057 | if (modifier == L_('E')) | |
1058 | goto bad_format; | |
1059 | ||
1060 | number_value = ns; | |
1061 | if (width == -1) | |
1062 | width = 9; | |
1063 | else | |
1064 | { | |
1065 | /* Take an explicit width less than 9 as a precision. */ | |
1066 | int j; | |
1067 | for (j = width; j < 9; j++) | |
1068 | number_value /= 10; | |
1069 | } | |
1070 | ||
1071 | DO_NUMBER (width, number_value); | |
e65fc94b LC |
1072 | #endif |
1073 | ||
1cd4fffc LC |
1074 | case L_('n'): |
1075 | add1 (L_('\n')); | |
1076 | break; | |
e65fc94b | 1077 | |
1cd4fffc LC |
1078 | case L_('P'): |
1079 | to_lowcase = true; | |
e65fc94b | 1080 | #ifndef _NL_CURRENT |
1cd4fffc | 1081 | format_char = L_('p'); |
e65fc94b | 1082 | #endif |
1cd4fffc LC |
1083 | /* FALLTHROUGH */ |
1084 | ||
1085 | case L_('p'): | |
1086 | if (change_case) | |
1087 | { | |
1088 | to_uppcase = false; | |
1089 | to_lowcase = true; | |
1090 | } | |
e65fc94b | 1091 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1092 | cpy (ap_len, ampm); |
1093 | break; | |
e65fc94b | 1094 | #else |
1cd4fffc | 1095 | goto underlying_strftime; |
e65fc94b LC |
1096 | #endif |
1097 | ||
1cd4fffc LC |
1098 | case L_('R'): |
1099 | subfmt = L_("%H:%M"); | |
1100 | goto subformat; | |
e65fc94b | 1101 | |
1cd4fffc | 1102 | case L_('r'): |
e65fc94b | 1103 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1104 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, |
1105 | NLW(T_FMT_AMPM))) | |
1106 | == L_('\0')) | |
1107 | subfmt = L_("%I:%M:%S %p"); | |
1108 | goto subformat; | |
e65fc94b | 1109 | #else |
1cd4fffc | 1110 | goto underlying_strftime; |
e65fc94b LC |
1111 | #endif |
1112 | ||
1cd4fffc LC |
1113 | case L_('S'): |
1114 | if (modifier == L_('E')) | |
1115 | goto bad_format; | |
e65fc94b | 1116 | |
1cd4fffc | 1117 | DO_NUMBER (2, tp->tm_sec); |
e65fc94b | 1118 | |
1cd4fffc LC |
1119 | case L_('s'): /* GNU extension. */ |
1120 | { | |
1121 | struct tm ltm; | |
1122 | time_t t; | |
e65fc94b | 1123 | |
1cd4fffc LC |
1124 | ltm = *tp; |
1125 | t = mktime (<m); | |
e65fc94b | 1126 | |
1cd4fffc LC |
1127 | /* Generate string value for T using time_t arithmetic; |
1128 | this works even if sizeof (long) < sizeof (time_t). */ | |
e65fc94b | 1129 | |
1cd4fffc LC |
1130 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
1131 | negative_number = t < 0; | |
e65fc94b | 1132 | |
1cd4fffc LC |
1133 | do |
1134 | { | |
1135 | int d = t % 10; | |
1136 | t /= 10; | |
1137 | *--bufp = (negative_number ? -d : d) + L_('0'); | |
1138 | } | |
1139 | while (t != 0); | |
e65fc94b | 1140 | |
1cd4fffc LC |
1141 | digits = 1; |
1142 | always_output_a_sign = false; | |
1143 | goto do_number_sign_and_padding; | |
1144 | } | |
e65fc94b | 1145 | |
1cd4fffc LC |
1146 | case L_('X'): |
1147 | if (modifier == L_('O')) | |
1148 | goto bad_format; | |
e65fc94b | 1149 | #ifdef _NL_CURRENT |
1cd4fffc LC |
1150 | if (! (modifier == L_('E') |
1151 | && (*(subfmt = | |
1152 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) | |
1153 | != L_('\0')))) | |
1154 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1155 | goto subformat; | |
e65fc94b | 1156 | #else |
1cd4fffc | 1157 | goto underlying_strftime; |
e65fc94b | 1158 | #endif |
1cd4fffc LC |
1159 | case L_('T'): |
1160 | subfmt = L_("%H:%M:%S"); | |
1161 | goto subformat; | |
1162 | ||
1163 | case L_('t'): | |
1164 | add1 (L_('\t')); | |
1165 | break; | |
1166 | ||
1167 | case L_('u'): | |
1168 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1169 | ||
1170 | case L_('U'): | |
1171 | if (modifier == L_('E')) | |
1172 | goto bad_format; | |
1173 | ||
1174 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1175 | ||
1176 | case L_('V'): | |
1177 | case L_('g'): | |
1178 | case L_('G'): | |
1179 | if (modifier == L_('E')) | |
1180 | goto bad_format; | |
1181 | { | |
1182 | /* YEAR is a leap year if and only if (tp->tm_year + TM_YEAR_BASE) | |
1183 | is a leap year, except that YEAR and YEAR - 1 both work | |
1184 | correctly even when (tp->tm_year + TM_YEAR_BASE) would | |
1185 | overflow. */ | |
1186 | int year = (tp->tm_year | |
1187 | + (tp->tm_year < 0 | |
1188 | ? TM_YEAR_BASE % 400 | |
1189 | : TM_YEAR_BASE % 400 - 400)); | |
1190 | int year_adjust = 0; | |
1191 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1192 | ||
1193 | if (days < 0) | |
1194 | { | |
1195 | /* This ISO week belongs to the previous year. */ | |
1196 | year_adjust = -1; | |
1197 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year - 1)), | |
1198 | tp->tm_wday); | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1203 | tp->tm_wday); | |
1204 | if (0 <= d) | |
1205 | { | |
1206 | /* This ISO week belongs to the next year. */ | |
1207 | year_adjust = 1; | |
1208 | days = d; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | switch (*f) | |
1213 | { | |
1214 | case L_('g'): | |
1215 | { | |
1216 | int yy = (tp->tm_year % 100 + year_adjust) % 100; | |
1217 | DO_NUMBER (2, (0 <= yy | |
1218 | ? yy | |
1219 | : tp->tm_year < -TM_YEAR_BASE - year_adjust | |
1220 | ? -yy | |
1221 | : yy + 100)); | |
1222 | } | |
1223 | ||
1224 | case L_('G'): | |
1225 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE - year_adjust, | |
1226 | (tp->tm_year + (unsigned int) TM_YEAR_BASE | |
1227 | + year_adjust)); | |
1228 | ||
1229 | default: | |
1230 | DO_NUMBER (2, days / 7 + 1); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | case L_('W'): | |
1235 | if (modifier == L_('E')) | |
1236 | goto bad_format; | |
1237 | ||
1238 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1239 | ||
1240 | case L_('w'): | |
1241 | if (modifier == L_('E')) | |
1242 | goto bad_format; | |
1243 | ||
1244 | DO_NUMBER (1, tp->tm_wday); | |
1245 | ||
1246 | case L_('Y'): | |
1247 | if (modifier == 'E') | |
1248 | { | |
e65fc94b | 1249 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1250 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1251 | if (era) | |
1252 | { | |
e65fc94b | 1253 | # ifdef COMPILE_WIDE |
1cd4fffc | 1254 | subfmt = era->era_wformat; |
e65fc94b | 1255 | # else |
1cd4fffc | 1256 | subfmt = era->era_format; |
e65fc94b | 1257 | # endif |
1cd4fffc LC |
1258 | goto subformat; |
1259 | } | |
e65fc94b | 1260 | #else |
1cd4fffc | 1261 | goto underlying_strftime; |
e65fc94b | 1262 | #endif |
1cd4fffc LC |
1263 | } |
1264 | if (modifier == L_('O')) | |
1265 | goto bad_format; | |
1266 | else | |
1267 | DO_SIGNED_NUMBER (4, tp->tm_year < -TM_YEAR_BASE, | |
1268 | tp->tm_year + (unsigned int) TM_YEAR_BASE); | |
1269 | ||
1270 | case L_('y'): | |
1271 | if (modifier == L_('E')) | |
1272 | { | |
e65fc94b | 1273 | #if HAVE_STRUCT_ERA_ENTRY |
1cd4fffc LC |
1274 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1275 | if (era) | |
1276 | { | |
1277 | int delta = tp->tm_year - era->start_date[0]; | |
1278 | DO_NUMBER (1, (era->offset | |
1279 | + delta * era->absolute_direction)); | |
1280 | } | |
e65fc94b | 1281 | #else |
1cd4fffc | 1282 | goto underlying_strftime; |
e65fc94b | 1283 | #endif |
1cd4fffc LC |
1284 | } |
1285 | ||
1286 | { | |
1287 | int yy = tp->tm_year % 100; | |
1288 | if (yy < 0) | |
1289 | yy = tp->tm_year < - TM_YEAR_BASE ? -yy : yy + 100; | |
1290 | DO_NUMBER (2, yy); | |
1291 | } | |
1292 | ||
1293 | case L_('Z'): | |
1294 | if (change_case) | |
1295 | { | |
1296 | to_uppcase = false; | |
1297 | to_lowcase = true; | |
1298 | } | |
e65fc94b LC |
1299 | |
1300 | #if HAVE_TZNAME | |
1cd4fffc LC |
1301 | /* The tzset() call might have changed the value. */ |
1302 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1303 | zone = tzname[tp->tm_isdst != 0]; | |
e65fc94b | 1304 | #endif |
1cd4fffc LC |
1305 | if (! zone) |
1306 | zone = ""; | |
e65fc94b LC |
1307 | |
1308 | #ifdef COMPILE_WIDE | |
1cd4fffc LC |
1309 | { |
1310 | /* The zone string is always given in multibyte form. We have | |
1311 | to transform it first. */ | |
1312 | wchar_t *wczone; | |
1313 | size_t len; | |
1314 | widen (zone, wczone, len); | |
1315 | cpy (len, wczone); | |
1316 | } | |
e65fc94b | 1317 | #else |
1cd4fffc | 1318 | cpy (strlen (zone), zone); |
e65fc94b | 1319 | #endif |
1cd4fffc LC |
1320 | break; |
1321 | ||
1322 | case L_(':'): | |
1323 | /* :, ::, and ::: are valid only just before 'z'. | |
1324 | :::: etc. are rejected later. */ | |
1325 | for (colons = 1; f[colons] == L_(':'); colons++) | |
1326 | continue; | |
1327 | if (f[colons] != L_('z')) | |
1328 | goto bad_format; | |
1329 | f += colons; | |
1330 | goto do_z_conversion; | |
1331 | ||
1332 | case L_('z'): | |
1333 | colons = 0; | |
1334 | ||
1335 | do_z_conversion: | |
1336 | if (tp->tm_isdst < 0) | |
1337 | break; | |
1338 | ||
1339 | { | |
1340 | int diff; | |
1341 | int hour_diff; | |
1342 | int min_diff; | |
1343 | int sec_diff; | |
e65fc94b | 1344 | #if HAVE_TM_GMTOFF |
1cd4fffc | 1345 | diff = tp->tm_gmtoff; |
e65fc94b | 1346 | #else |
1cd4fffc LC |
1347 | if (ut) |
1348 | diff = 0; | |
1349 | else | |
1350 | { | |
1351 | struct tm gtm; | |
1352 | struct tm ltm; | |
1353 | time_t lt; | |
1354 | ||
1355 | ltm = *tp; | |
1356 | lt = mktime (<m); | |
1357 | ||
1358 | if (lt == (time_t) -1) | |
1359 | { | |
1360 | /* mktime returns -1 for errors, but -1 is also a | |
1361 | valid time_t value. Check whether an error really | |
1362 | occurred. */ | |
1363 | struct tm tm; | |
1364 | ||
1365 | if (! __localtime_r (<, &tm) | |
1366 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1367 | | (ltm.tm_min ^ tm.tm_min) | |
1368 | | (ltm.tm_hour ^ tm.tm_hour) | |
1369 | | (ltm.tm_mday ^ tm.tm_mday) | |
1370 | | (ltm.tm_mon ^ tm.tm_mon) | |
1371 | | (ltm.tm_year ^ tm.tm_year))) | |
1372 | break; | |
1373 | } | |
1374 | ||
1375 | if (! __gmtime_r (<, >m)) | |
1376 | break; | |
1377 | ||
1378 | diff = tm_diff (<m, >m); | |
1379 | } | |
e65fc94b LC |
1380 | #endif |
1381 | ||
1cd4fffc LC |
1382 | hour_diff = diff / 60 / 60; |
1383 | min_diff = diff / 60 % 60; | |
1384 | sec_diff = diff % 60; | |
1385 | ||
1386 | switch (colons) | |
1387 | { | |
1388 | case 0: /* +hhmm */ | |
1389 | DO_TZ_OFFSET (5, diff < 0, 0, hour_diff * 100 + min_diff); | |
1390 | ||
1391 | case 1: tz_hh_mm: /* +hh:mm */ | |
1392 | DO_TZ_OFFSET (6, diff < 0, 04, hour_diff * 100 + min_diff); | |
1393 | ||
1394 | case 2: tz_hh_mm_ss: /* +hh:mm:ss */ | |
1395 | DO_TZ_OFFSET (9, diff < 0, 024, | |
1396 | hour_diff * 10000 + min_diff * 100 + sec_diff); | |
1397 | ||
1398 | case 3: /* +hh if possible, else +hh:mm, else +hh:mm:ss */ | |
1399 | if (sec_diff != 0) | |
1400 | goto tz_hh_mm_ss; | |
1401 | if (min_diff != 0) | |
1402 | goto tz_hh_mm; | |
1403 | DO_TZ_OFFSET (3, diff < 0, 0, hour_diff); | |
1404 | ||
1405 | default: | |
1406 | goto bad_format; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1411 | --f; | |
1412 | /* Fall through. */ | |
1413 | default: | |
1414 | /* Unknown format; output the format, including the '%', | |
1415 | since this is most likely the right thing to do if a | |
1416 | multibyte string has been misparsed. */ | |
1417 | bad_format: | |
1418 | { | |
1419 | int flen; | |
1420 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1421 | continue; | |
1422 | cpy (flen, &f[1 - flen]); | |
1423 | } | |
1424 | break; | |
1425 | } | |
e65fc94b LC |
1426 | } |
1427 | ||
1428 | #if ! FPRINTFTIME | |
1429 | if (p && maxsize != 0) | |
1430 | *p = L_('\0'); | |
1431 | #endif | |
1432 | ||
1433 | return i; | |
1434 | } | |
1435 | ||
1436 | /* Write information from TP into S according to the format | |
1437 | string FORMAT, writing no more that MAXSIZE characters | |
1438 | (including the terminating '\0') and returning number of | |
1439 | characters written. If S is NULL, nothing will be written | |
1440 | anywhere, so to determine how many characters would be | |
1441 | written, use NULL for S and (size_t) -1 for MAXSIZE. */ | |
1442 | size_t | |
1443 | my_strftime (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) | |
1cd4fffc LC |
1444 | const CHAR_T *format, |
1445 | const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO) | |
e65fc94b LC |
1446 | { |
1447 | return strftime_case_ (false, s, STRFTIME_ARG (maxsize) | |
1cd4fffc | 1448 | format, tp extra_args LOCALE_ARG); |
e65fc94b LC |
1449 | } |
1450 | ||
1451 | #if defined _LIBC && ! FPRINTFTIME | |
1452 | libc_hidden_def (my_strftime) | |
1453 | #endif | |
1454 | ||
1455 | ||
1456 | #if defined emacs && ! FPRINTFTIME | |
1457 | /* For Emacs we have a separate interface which corresponds to the normal | |
1458 | strftime function plus the ut argument, but without the ns argument. */ | |
1459 | size_t | |
1460 | emacs_strftimeu (char *s, size_t maxsize, const char *format, | |
1cd4fffc | 1461 | const struct tm *tp, int ut) |
e65fc94b LC |
1462 | { |
1463 | return my_strftime (s, maxsize, format, tp, ut, 0); | |
1464 | } | |
1465 | #endif |