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880c108d SM |
1 | /* Copyright (C) 1991,92,93,94,95,96,97,98,99,2000,2003 |
2 | Free Software Foundation, Inc. | |
3 | ||
fcf08f5b DL |
4 | NOTE: The canonical source of this file is maintained with gnulib. |
5 | Bugs can be reported to bug-gnulib@gnu.org. | |
6 | ||
e50517d9 | 7 | This file is part of the GNU Emacs. |
8ce9b63e | 8 | |
fcf08f5b DL |
9 | This program is free software; you can redistribute it and/or |
10 | modify it under the terms of the GNU Library General Public License | |
11 | as published by the Free Software Foundation; either version 2, or | |
12 | (at your option) any later version. | |
8ce9b63e | 13 | |
fcf08f5b | 14 | This program is distributed in the hope that it will be useful, |
89752145 | 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
e50517d9 GM |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | Library General Public License for more details. | |
8ce9b63e | 18 | |
e50517d9 GM |
19 | You should have received a copy of the GNU Library General Public |
20 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
21 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
49fb5799 PE |
23 | |
24 | #ifdef HAVE_CONFIG_H | |
25 | # include <config.h> | |
26 | #endif | |
27 | ||
28 | #ifdef _LIBC | |
29 | # define HAVE_LIMITS_H 1 | |
30 | # define HAVE_MBLEN 1 | |
31 | # define HAVE_MBRLEN 1 | |
32 | # define HAVE_STRUCT_ERA_ENTRY 1 | |
33 | # define HAVE_TM_GMTOFF 1 | |
34 | # define HAVE_TM_ZONE 1 | |
35 | # define HAVE_TZNAME 1 | |
36 | # define HAVE_TZSET 1 | |
37 | # define MULTIBYTE_IS_FORMAT_SAFE 1 | |
38 | # define STDC_HEADERS 1 | |
49fb5799 PE |
39 | # include "../locale/localeinfo.h" |
40 | #endif | |
41 | ||
42 | #include <ctype.h> | |
fcf08f5b | 43 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
49fb5799 PE |
44 | |
45 | #ifdef TIME_WITH_SYS_TIME | |
46 | # include <sys/time.h> | |
47 | # include <time.h> | |
48 | #else | |
49 | # ifdef HAVE_SYS_TIME_H | |
50 | # include <sys/time.h> | |
51 | # else | |
52 | # include <time.h> | |
53 | # endif | |
54 | #endif | |
55 | #if HAVE_TZNAME | |
03695ace | 56 | #ifndef USE_CRT_DLL |
49fb5799 PE |
57 | extern char *tzname[]; |
58 | #endif | |
03695ace | 59 | #endif |
49fb5799 PE |
60 | |
61 | /* Do multibyte processing if multibytes are supported, unless | |
62 | multibyte sequences are safe in formats. Multibyte sequences are | |
63 | safe if they cannot contain byte sequences that look like format | |
64 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
65 | encoding, which is safe for formats, but strftime.c can be used | |
66 | with other C libraries that use unsafe encodings. */ | |
67 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
68 | ||
69 | #if DO_MULTIBYTE | |
70 | # if HAVE_MBRLEN | |
71 | # include <wchar.h> | |
fcf08f5b | 72 | # ifdef HAVE_SYS__MBSTATE_H /* previously tested __hpux */ |
cfc905a1 EZ |
73 | # include <sys/_mbstate_t.h> |
74 | # endif | |
02521061 RS |
75 | # if !defined (mbsinit) && !defined (HAVE_MBSINIT) |
76 | # define mbsinit(ps) 1 | |
77 | # endif /* !defined (mbsinit) && !defined (HAVE_MBSINIT) */ | |
49fb5799 PE |
78 | # else |
79 | /* Simulate mbrlen with mblen as best we can. */ | |
80 | # define mbstate_t int | |
81 | # define mbrlen(s, n, ps) mblen (s, n) | |
82 | # define mbsinit(ps) (*(ps) == 0) | |
83 | # endif | |
84 | static const mbstate_t mbstate_zero; | |
85 | #endif | |
86 | ||
1da6faed | 87 | #ifdef HAVE_LIMITS_H |
49fb5799 PE |
88 | # include <limits.h> |
89 | #endif | |
90 | ||
1da6faed | 91 | #ifdef STDC_HEADERS |
49fb5799 PE |
92 | # include <stddef.h> |
93 | # include <stdlib.h> | |
fcf08f5b | 94 | # include <string.h> |
49fb5799 | 95 | #else |
1b65a66c PE |
96 | # ifndef HAVE_MEMCPY |
97 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) | |
98 | # endif | |
49fb5799 PE |
99 | #endif |
100 | ||
e50517d9 GM |
101 | #ifdef COMPILE_WIDE |
102 | # include <endian.h> | |
103 | # define CHAR_T wchar_t | |
104 | # define UCHAR_T unsigned int | |
105 | # define L_(Str) L##Str | |
106 | # define NLW(Sym) _NL_W##Sym | |
107 | ||
108 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
109 | # define STRLEN(s) __wcslen (s) | |
110 | ||
4e941b8e | 111 | #else |
e50517d9 GM |
112 | # define CHAR_T char |
113 | # define UCHAR_T unsigned char | |
114 | # define L_(Str) Str | |
115 | # define NLW(Sym) Sym | |
116 | ||
117 | # if !defined STDC_HEADERS && !defined HAVE_MEMCPY | |
118 | # define MEMCPY(d, s, n) bcopy ((s), (d), (n)) | |
119 | # else | |
120 | # define MEMCPY(d, s, n) memcpy ((d), (s), (n)) | |
121 | # endif | |
122 | # define STRLEN(s) strlen (s) | |
123 | ||
124 | # ifdef _LIBC | |
125 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) | |
126 | # else | |
127 | # ifndef HAVE_MEMPCPY | |
128 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) | |
129 | # endif | |
4e941b8e UD |
130 | # endif |
131 | #endif | |
132 | ||
49fb5799 | 133 | #ifndef __P |
fcf08f5b | 134 | # if defined __GNUC__ || (defined __STDC__ && __STDC__) || defined (PROTOTYPES) |
49fb5799 PE |
135 | # define __P(args) args |
136 | # else | |
137 | # define __P(args) () | |
138 | # endif /* GCC. */ | |
139 | #endif /* Not __P. */ | |
140 | ||
141 | #ifndef PTR | |
142 | # ifdef __STDC__ | |
143 | # define PTR void * | |
144 | # else | |
145 | # define PTR char * | |
146 | # endif | |
147 | #endif | |
148 | ||
149 | #ifndef CHAR_BIT | |
150 | # define CHAR_BIT 8 | |
151 | #endif | |
152 | ||
153 | #ifndef NULL | |
154 | # define NULL 0 | |
155 | #endif | |
156 | ||
157 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
158 | ||
159 | /* Bound on length of the string representing an integer value of type t. | |
160 | Subtract one for the sign bit if t is signed; | |
161 | 302 / 1000 is log10 (2) rounded up; | |
162 | add one for integer division truncation; | |
163 | add one more for a minus sign if t is signed. */ | |
164 | #define INT_STRLEN_BOUND(t) \ | |
68c45bf0 | 165 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) |
49fb5799 PE |
166 | |
167 | #define TM_YEAR_BASE 1900 | |
168 | ||
169 | #ifndef __isleap | |
170 | /* Nonzero if YEAR is a leap year (every 4 years, | |
171 | except every 100th isn't, and every 400th is). */ | |
fcf08f5b | 172 | # define __isleap(year) \ |
49fb5799 PE |
173 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
174 | #endif | |
175 | ||
176 | ||
177 | #ifdef _LIBC | |
68c45bf0 PE |
178 | # define my_strftime_gmtime_r __gmtime_r |
179 | # define my_strftime_localtime_r __localtime_r | |
49fb5799 PE |
180 | # define tzname __tzname |
181 | # define tzset __tzset | |
182 | #else | |
68c45bf0 PE |
183 | |
184 | /* If we're a strftime substitute in a GNU program, then prefer gmtime | |
185 | to gmtime_r, since many gmtime_r implementations are buggy. | |
186 | Similarly for localtime_r. */ | |
187 | ||
188 | # if ! HAVE_TM_GMTOFF | |
189 | static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *)); | |
49fb5799 | 190 | static struct tm * |
68c45bf0 | 191 | my_strftime_gmtime_r (t, tp) |
49fb5799 PE |
192 | const time_t *t; |
193 | struct tm *tp; | |
194 | { | |
195 | struct tm *l = gmtime (t); | |
196 | if (! l) | |
197 | return 0; | |
198 | *tp = *l; | |
199 | return tp; | |
200 | } | |
49fb5799 | 201 | |
68c45bf0 | 202 | static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *)); |
49fb5799 | 203 | static struct tm * |
68c45bf0 | 204 | my_strftime_localtime_r (t, tp) |
49fb5799 PE |
205 | const time_t *t; |
206 | struct tm *tp; | |
207 | { | |
208 | struct tm *l = localtime (t); | |
209 | if (! l) | |
210 | return 0; | |
211 | *tp = *l; | |
212 | return tp; | |
213 | } | |
880c108d | 214 | # endif /* ! HAVE_TM_GMTOFF */ |
649e97a3 | 215 | #endif /* ! defined _LIBC */ |
49fb5799 PE |
216 | |
217 | ||
1b65a66c | 218 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC |
49fb5799 PE |
219 | /* Some systems lack the `memset' function and we don't want to |
220 | introduce additional dependencies. */ | |
c72e6644 RS |
221 | /* The SGI compiler reportedly barfs on the trailing null |
222 | if we use a string constant as the initializer. 28 June 1997, rms. */ | |
e50517d9 GM |
223 | static const CHAR_T spaces[16] = /* " " */ |
224 | { | |
225 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '), | |
226 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ') | |
227 | }; | |
228 | static const CHAR_T zeroes[16] = /* "0000000000000000" */ | |
229 | { | |
230 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'), | |
231 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0') | |
232 | }; | |
49fb5799 PE |
233 | |
234 | # define memset_space(P, Len) \ | |
fcf08f5b DL |
235 | do { \ |
236 | int _len = (Len); \ | |
237 | \ | |
238 | do \ | |
239 | { \ | |
240 | int _this = _len > 16 ? 16 : _len; \ | |
241 | (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \ | |
242 | _len -= _this; \ | |
243 | } \ | |
244 | while (_len > 0); \ | |
49fb5799 | 245 | } while (0) |
098401cf PE |
246 | |
247 | # define memset_zero(P, Len) \ | |
fcf08f5b DL |
248 | do { \ |
249 | int _len = (Len); \ | |
250 | \ | |
251 | do \ | |
252 | { \ | |
253 | int _this = _len > 16 ? 16 : _len; \ | |
254 | (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \ | |
255 | _len -= _this; \ | |
256 | } \ | |
257 | while (_len > 0); \ | |
098401cf | 258 | } while (0) |
49fb5799 | 259 | #else |
e50517d9 GM |
260 | # ifdef COMPILE_WIDE |
261 | # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len)) | |
262 | # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len)) | |
263 | # else | |
264 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) | |
265 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) | |
266 | # endif | |
49fb5799 PE |
267 | #endif |
268 | ||
fcf08f5b DL |
269 | #define add(n, f) \ |
270 | do \ | |
271 | { \ | |
272 | int _n = (n); \ | |
273 | int _delta = width - _n; \ | |
274 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
275 | if ((size_t) _incr >= maxsize - i) \ | |
276 | return 0; \ | |
277 | if (p) \ | |
278 | { \ | |
279 | if (_delta > 0) \ | |
280 | { \ | |
281 | if (pad == L_('0')) \ | |
282 | memset_zero (p, _delta); \ | |
283 | else \ | |
284 | memset_space (p, _delta); \ | |
285 | } \ | |
286 | f; \ | |
287 | p += _n; \ | |
288 | } \ | |
289 | i += _incr; \ | |
49fb5799 PE |
290 | } while (0) |
291 | ||
1b65a66c | 292 | #define cpy(n, s) \ |
fcf08f5b DL |
293 | add ((n), \ |
294 | if (to_lowcase) \ | |
295 | memcpy_lowcase (p, (s), _n LOCALE_ARG); \ | |
296 | else if (to_uppcase) \ | |
297 | memcpy_uppcase (p, (s), _n LOCALE_ARG); \ | |
298 | else \ | |
299 | MEMCPY ((PTR) p, (const PTR) (s), _n)) | |
e50517d9 GM |
300 | |
301 | #ifdef COMPILE_WIDE | |
fcf08f5b DL |
302 | # ifndef USE_IN_EXTENDED_LOCALE_MODEL |
303 | # undef __mbsrtowcs_l | |
304 | # define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st) | |
305 | # endif | |
e50517d9 | 306 | # define widen(os, ws, l) \ |
fcf08f5b DL |
307 | { \ |
308 | mbstate_t __st; \ | |
309 | const char *__s = os; \ | |
310 | memset (&__st, '\0', sizeof (__st)); \ | |
311 | l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc); \ | |
312 | ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t)); \ | |
313 | (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc); \ | |
e50517d9 GM |
314 | } |
315 | #endif | |
49fb5799 PE |
316 | |
317 | ||
fcf08f5b DL |
318 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL |
319 | /* We use this code also for the extended locale handling where the | |
320 | function gets as an additional argument the locale which has to be | |
321 | used. To access the values we have to redefine the _NL_CURRENT | |
322 | macro. */ | |
323 | # define strftime __strftime_l | |
324 | # define wcsftime __wcsftime_l | |
325 | # undef _NL_CURRENT | |
326 | # define _NL_CURRENT(category, item) \ | |
327 | (current->values[_NL_ITEM_INDEX (item)].string) | |
328 | # define LOCALE_PARAM , loc | |
329 | # define LOCALE_ARG , loc | |
330 | # define LOCALE_PARAM_DECL __locale_t loc; | |
331 | # define LOCALE_PARAM_PROTO , __locale_t loc | |
332 | # define HELPER_LOCALE_ARG , current | |
333 | #else | |
334 | # define LOCALE_PARAM | |
335 | # define LOCALE_PARAM_PROTO | |
336 | # define LOCALE_ARG | |
337 | # define LOCALE_PARAM_DECL | |
338 | # ifdef _LIBC | |
339 | # define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME) | |
340 | # else | |
341 | # define HELPER_LOCALE_ARG | |
342 | # endif | |
343 | #endif | |
344 | ||
e50517d9 | 345 | #ifdef COMPILE_WIDE |
fcf08f5b DL |
346 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL |
347 | # define TOUPPER(Ch, L) __towupper_l (Ch, L) | |
348 | # define TOLOWER(Ch, L) __towlower_l (Ch, L) | |
349 | # else | |
350 | # define TOUPPER(Ch, L) towupper (Ch) | |
351 | # define TOLOWER(Ch, L) towlower (Ch) | |
352 | # endif | |
49fb5799 | 353 | #else |
e50517d9 | 354 | # ifdef _LIBC |
fcf08f5b DL |
355 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL |
356 | # define TOUPPER(Ch, L) __toupper_l (Ch, L) | |
357 | # define TOLOWER(Ch, L) __tolower_l (Ch, L) | |
358 | # else | |
359 | # define TOUPPER(Ch, L) toupper (Ch) | |
360 | # define TOLOWER(Ch, L) tolower (Ch) | |
361 | # endif | |
e50517d9 | 362 | # else |
fcf08f5b DL |
363 | # define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch)) |
364 | # define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
e50517d9 | 365 | # endif |
49fb5799 PE |
366 | #endif |
367 | /* We don't use `isdigit' here since the locale dependent | |
368 | interpretation is not what we want here. We only need to accept | |
369 | the arabic digits in the ASCII range. One day there is perhaps a | |
370 | more reliable way to accept other sets of digits. */ | |
e50517d9 | 371 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) |
49fb5799 | 372 | |
e50517d9 | 373 | static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src, |
fcf08f5b | 374 | size_t len LOCALE_PARAM_PROTO)); |
49fb5799 | 375 | |
e50517d9 | 376 | static CHAR_T * |
fcf08f5b | 377 | memcpy_lowcase (dest, src, len LOCALE_PARAM) |
e50517d9 GM |
378 | CHAR_T *dest; |
379 | const CHAR_T *src; | |
49fb5799 | 380 | size_t len; |
fcf08f5b | 381 | LOCALE_PARAM_DECL |
49fb5799 PE |
382 | { |
383 | while (len-- > 0) | |
fcf08f5b | 384 | dest[len] = TOLOWER ((UCHAR_T) src[len], loc); |
49fb5799 PE |
385 | return dest; |
386 | } | |
387 | ||
e50517d9 | 388 | static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src, |
fcf08f5b | 389 | size_t len LOCALE_PARAM_PROTO)); |
49fb5799 | 390 | |
e50517d9 | 391 | static CHAR_T * |
fcf08f5b | 392 | memcpy_uppcase (dest, src, len LOCALE_PARAM) |
e50517d9 GM |
393 | CHAR_T *dest; |
394 | const CHAR_T *src; | |
49fb5799 | 395 | size_t len; |
fcf08f5b | 396 | LOCALE_PARAM_DECL |
49fb5799 PE |
397 | { |
398 | while (len-- > 0) | |
fcf08f5b | 399 | dest[len] = TOUPPER ((UCHAR_T) src[len], loc); |
49fb5799 PE |
400 | return dest; |
401 | } | |
402 | ||
1b65a66c | 403 | |
49fb5799 PE |
404 | #if ! HAVE_TM_GMTOFF |
405 | /* Yield the difference between *A and *B, | |
406 | measured in seconds, ignoring leap seconds. */ | |
1b65a66c | 407 | # define tm_diff ftime_tm_diff |
49fb5799 PE |
408 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
409 | static int | |
410 | tm_diff (a, b) | |
411 | const struct tm *a; | |
412 | const struct tm *b; | |
413 | { | |
414 | /* Compute intervening leap days correctly even if year is negative. | |
415 | Take care to avoid int overflow in leap day calculations, | |
416 | but it's OK to assume that A and B are close to each other. */ | |
417 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
418 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
419 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
420 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
421 | int a400 = a100 >> 2; | |
422 | int b400 = b100 >> 2; | |
423 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
424 | int years = a->tm_year - b->tm_year; | |
425 | int days = (365 * years + intervening_leap_days | |
fcf08f5b | 426 | + (a->tm_yday - b->tm_yday)); |
49fb5799 | 427 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
fcf08f5b DL |
428 | + (a->tm_min - b->tm_min)) |
429 | + (a->tm_sec - b->tm_sec)); | |
49fb5799 PE |
430 | } |
431 | #endif /* ! HAVE_TM_GMTOFF */ | |
432 | ||
433 | ||
434 | ||
435 | /* The number of days from the first day of the first ISO week of this | |
436 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
437 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
438 | be as small as YDAY_MINIMUM. */ | |
439 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
440 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
441 | #define YDAY_MINIMUM (-366) | |
442 | static int iso_week_days __P ((int, int)); | |
443 | #ifdef __GNUC__ | |
ffa0434b | 444 | __inline__ |
49fb5799 PE |
445 | #endif |
446 | static int | |
447 | iso_week_days (yday, wday) | |
448 | int yday; | |
449 | int wday; | |
450 | { | |
451 | /* Add enough to the first operand of % to make it nonnegative. */ | |
452 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
453 | return (yday | |
fcf08f5b DL |
454 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
455 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
49fb5799 PE |
456 | } |
457 | ||
458 | ||
4b7c78fc | 459 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) |
e50517d9 | 460 | static CHAR_T const weekday_name[][10] = |
49fb5799 | 461 | { |
e50517d9 GM |
462 | L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"), |
463 | L_("Thursday"), L_("Friday"), L_("Saturday") | |
49fb5799 | 464 | }; |
e50517d9 | 465 | static CHAR_T const month_name[][10] = |
49fb5799 | 466 | { |
e50517d9 GM |
467 | L_("January"), L_("February"), L_("March"), L_("April"), L_("May"), |
468 | L_("June"), L_("July"), L_("August"), L_("September"), L_("October"), | |
469 | L_("November"), L_("December") | |
49fb5799 PE |
470 | }; |
471 | #endif | |
472 | ||
473 | ||
fcf08f5b DL |
474 | /* When compiling this file, GNU applications can #define my_strftime |
475 | to a symbol (typically nstrftime) to get an extended strftime with | |
476 | extra arguments UT and NS. */ | |
477 | ||
478 | #ifdef my_strftime | |
479 | # define extra_args , ut, ns | |
480 | # define extra_args_spec int ut; int ns; | |
481 | # define extra_args_spec_iso , int ut, int ns | |
4b7c78fc | 482 | #else |
e50517d9 GM |
483 | # ifdef COMPILE_WIDE |
484 | # define my_strftime wcsftime | |
fcf08f5b | 485 | # define nl_get_alt_digit _nl_get_walt_digit |
e50517d9 GM |
486 | # else |
487 | # define my_strftime strftime | |
fcf08f5b | 488 | # define nl_get_alt_digit _nl_get_alt_digit |
e50517d9 | 489 | # endif |
fcf08f5b DL |
490 | # define extra_args |
491 | # define extra_args_spec | |
492 | # define extra_args_spec_iso | |
68c45bf0 PE |
493 | /* We don't have this information in general. */ |
494 | # define ut 0 | |
fcf08f5b | 495 | # define ns 0 |
4b7c78fc UD |
496 | #endif |
497 | ||
ea456eb4 | 498 | #if !defined _LIBC && !defined(WINDOWSNT) && HAVE_TZNAME && HAVE_TZSET |
49fb5799 PE |
499 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. |
500 | Work around this bug by copying *tp before it might be munged. */ | |
501 | size_t _strftime_copytm __P ((char *, size_t, const char *, | |
fcf08f5b | 502 | const struct tm * extra_args_spec_iso)); |
49fb5799 | 503 | size_t |
fcf08f5b | 504 | my_strftime (s, maxsize, format, tp extra_args) |
e50517d9 | 505 | CHAR_T *s; |
49fb5799 | 506 | size_t maxsize; |
e50517d9 | 507 | const CHAR_T *format; |
49fb5799 | 508 | const struct tm *tp; |
fcf08f5b | 509 | extra_args_spec |
49fb5799 PE |
510 | { |
511 | struct tm tmcopy; | |
512 | tmcopy = *tp; | |
fcf08f5b | 513 | return _strftime_copytm (s, maxsize, format, &tmcopy extra_args); |
49fb5799 | 514 | } |
4b7c78fc | 515 | # undef my_strftime |
ea456eb4 | 516 | # define my_strftime _strftime_copytm |
49fb5799 PE |
517 | #endif |
518 | ||
519 | ||
520 | /* Write information from TP into S according to the format | |
521 | string FORMAT, writing no more that MAXSIZE characters | |
522 | (including the terminating '\0') and returning number of | |
523 | characters written. If S is NULL, nothing will be written | |
524 | anywhere, so to determine how many characters would be | |
525 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
526 | size_t | |
fcf08f5b | 527 | my_strftime (s, maxsize, format, tp extra_args LOCALE_PARAM) |
e50517d9 | 528 | CHAR_T *s; |
49fb5799 | 529 | size_t maxsize; |
e50517d9 | 530 | const CHAR_T *format; |
49fb5799 | 531 | const struct tm *tp; |
fcf08f5b DL |
532 | extra_args_spec |
533 | LOCALE_PARAM_DECL | |
49fb5799 | 534 | { |
fcf08f5b DL |
535 | #if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL |
536 | struct locale_data *const current = loc->__locales[LC_TIME]; | |
537 | #endif | |
538 | ||
49fb5799 PE |
539 | int hour12 = tp->tm_hour; |
540 | #ifdef _NL_CURRENT | |
68c45bf0 PE |
541 | /* We cannot make the following values variables since we must delay |
542 | the evaluation of these values until really needed since some | |
543 | expressions might not be valid in every situation. The `struct tm' | |
544 | might be generated by a strptime() call that initialized | |
545 | only a few elements. Dereference the pointers only if the format | |
546 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
e50517d9 GM |
547 | # define a_wkday \ |
548 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
549 | # define f_wkday \ | |
550 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
551 | # define a_month \ | |
552 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
553 | # define f_month \ | |
554 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
555 | # define ampm \ | |
fcf08f5b DL |
556 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ |
557 | ? NLW(PM_STR) : NLW(AM_STR))) | |
e50517d9 GM |
558 | |
559 | # define aw_len STRLEN (a_wkday) | |
560 | # define am_len STRLEN (a_month) | |
561 | # define ap_len STRLEN (ampm) | |
49fb5799 | 562 | #else |
4b7c78fc | 563 | # if !HAVE_STRFTIME |
e50517d9 GM |
564 | # define f_wkday (weekday_name[tp->tm_wday]) |
565 | # define f_month (month_name[tp->tm_mon]) | |
566 | # define a_wkday f_wkday | |
567 | # define a_month f_month | |
568 | # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11)) | |
68c45bf0 | 569 | |
49fb5799 PE |
570 | size_t aw_len = 3; |
571 | size_t am_len = 3; | |
572 | size_t ap_len = 2; | |
4b7c78fc | 573 | # endif |
4b7c78fc | 574 | #endif |
49fb5799 | 575 | const char *zone; |
49fb5799 | 576 | size_t i = 0; |
e50517d9 GM |
577 | CHAR_T *p = s; |
578 | const CHAR_T *f; | |
fcf08f5b DL |
579 | #if DO_MULTIBYTE && !defined COMPILE_WIDE |
580 | const char *format_end = NULL; | |
581 | #endif | |
49fb5799 PE |
582 | |
583 | zone = NULL; | |
1b65a66c PE |
584 | #if HAVE_TM_ZONE |
585 | /* The POSIX test suite assumes that setting | |
49fb5799 PE |
586 | the environment variable TZ to a new value before calling strftime() |
587 | will influence the result (the %Z format) even if the information in | |
1b65a66c PE |
588 | TP is computed with a totally different time zone. |
589 | This is bogus: though POSIX allows bad behavior like this, | |
590 | POSIX does not require it. Do the right thing instead. */ | |
49fb5799 PE |
591 | zone = (const char *) tp->tm_zone; |
592 | #endif | |
593 | #if HAVE_TZNAME | |
68c45bf0 PE |
594 | if (ut) |
595 | { | |
596 | if (! (zone && *zone)) | |
fcf08f5b | 597 | zone = "GMT"; |
68c45bf0 PE |
598 | } |
599 | else | |
600 | { | |
fcf08f5b DL |
601 | /* POSIX.1 requires that local time zone information be used as |
602 | though strftime called tzset. */ | |
49fb5799 | 603 | # if HAVE_TZSET |
68c45bf0 | 604 | tzset (); |
49fb5799 | 605 | # endif |
68c45bf0 | 606 | } |
49fb5799 | 607 | #endif |
49fb5799 PE |
608 | |
609 | if (hour12 > 12) | |
610 | hour12 -= 12; | |
611 | else | |
68c45bf0 PE |
612 | if (hour12 == 0) |
613 | hour12 = 12; | |
49fb5799 PE |
614 | |
615 | for (f = format; *f != '\0'; ++f) | |
616 | { | |
fcf08f5b DL |
617 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
618 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
619 | int digits; /* Max digits for numeric format. */ | |
620 | int number_value; /* Numeric value to be printed. */ | |
621 | int negative_number; /* 1 if the number is negative. */ | |
e50517d9 GM |
622 | const CHAR_T *subfmt; |
623 | CHAR_T *bufp; | |
624 | CHAR_T buf[1 + (sizeof (int) < sizeof (time_t) | |
fcf08f5b DL |
625 | ? INT_STRLEN_BOUND (time_t) |
626 | : INT_STRLEN_BOUND (int))]; | |
49fb5799 PE |
627 | int width = -1; |
628 | int to_lowcase = 0; | |
629 | int to_uppcase = 0; | |
1b65a66c | 630 | int change_case = 0; |
4b7c78fc | 631 | int format_char; |
49fb5799 | 632 | |
e50517d9 GM |
633 | #if DO_MULTIBYTE && !defined COMPILE_WIDE |
634 | switch (*f) | |
fcf08f5b DL |
635 | { |
636 | case L_('%'): | |
637 | break; | |
638 | ||
639 | case L_('\b'): case L_('\t'): case L_('\n'): | |
640 | case L_('\v'): case L_('\f'): case L_('\r'): | |
641 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
642 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
643 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
644 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
645 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
646 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
647 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
648 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
649 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
650 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
651 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
652 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
653 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
654 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
655 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
656 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
657 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
658 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
659 | case L_('~'): | |
660 | /* The C Standard requires these 98 characters (plus '%') to | |
661 | be in the basic execution character set. None of these | |
662 | characters can start a multibyte sequence, so they need | |
663 | not be analyzed further. */ | |
664 | add (1, *p = *f); | |
665 | continue; | |
666 | ||
667 | default: | |
668 | /* Copy this multibyte sequence until we reach its end, find | |
669 | an error, or come back to the initial shift state. */ | |
670 | { | |
671 | mbstate_t mbstate = mbstate_zero; | |
672 | size_t len = 0; | |
673 | size_t fsize; | |
674 | ||
675 | if (! format_end) | |
676 | format_end = f + strlen (f) + 1; | |
677 | fsize = format_end - f; | |
678 | ||
679 | do | |
680 | { | |
681 | size_t bytes = mbrlen (f + len, fsize - len, &mbstate); | |
682 | ||
683 | if (bytes == 0) | |
684 | break; | |
685 | ||
686 | if (bytes == (size_t) -2) | |
687 | { | |
688 | len += strlen (f + len); | |
689 | break; | |
690 | } | |
691 | ||
692 | if (bytes == (size_t) -1) | |
693 | { | |
694 | len++; | |
695 | break; | |
696 | } | |
697 | ||
698 | len += bytes; | |
699 | } | |
700 | while (! mbsinit (&mbstate)); | |
701 | ||
702 | cpy (len, f); | |
703 | f += len - 1; | |
704 | continue; | |
705 | } | |
706 | } | |
49fb5799 PE |
707 | |
708 | #else /* ! DO_MULTIBYTE */ | |
709 | ||
e50517d9 | 710 | /* Either multibyte encodings are not supported, they are |
fcf08f5b DL |
711 | safe for formats, so any non-'%' byte can be copied through, |
712 | or this is the wide character version. */ | |
e50517d9 | 713 | if (*f != L_('%')) |
fcf08f5b DL |
714 | { |
715 | add (1, *p = *f); | |
716 | continue; | |
717 | } | |
49fb5799 PE |
718 | |
719 | #endif /* ! DO_MULTIBYTE */ | |
720 | ||
721 | /* Check for flags that can modify a format. */ | |
49fb5799 | 722 | while (1) |
fcf08f5b DL |
723 | { |
724 | switch (*++f) | |
725 | { | |
726 | /* This influences the number formats. */ | |
727 | case L_('_'): | |
728 | case L_('-'): | |
729 | case L_('0'): | |
730 | pad = *f; | |
731 | continue; | |
732 | ||
733 | /* This changes textual output. */ | |
734 | case L_('^'): | |
735 | to_uppcase = 1; | |
736 | continue; | |
737 | case L_('#'): | |
738 | change_case = 1; | |
739 | continue; | |
740 | ||
741 | default: | |
742 | break; | |
743 | } | |
744 | break; | |
745 | } | |
49fb5799 PE |
746 | |
747 | /* As a GNU extension we allow to specify the field width. */ | |
748 | if (ISDIGIT (*f)) | |
fcf08f5b DL |
749 | { |
750 | width = 0; | |
751 | do | |
752 | { | |
753 | if (width > INT_MAX / 10 | |
754 | || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10)) | |
755 | /* Avoid overflow. */ | |
756 | width = INT_MAX; | |
757 | else | |
758 | { | |
759 | width *= 10; | |
760 | width += *f - L_('0'); | |
761 | } | |
762 | ++f; | |
763 | } | |
764 | while (ISDIGIT (*f)); | |
765 | } | |
49fb5799 PE |
766 | |
767 | /* Check for modifiers. */ | |
768 | switch (*f) | |
fcf08f5b DL |
769 | { |
770 | case L_('E'): | |
771 | case L_('O'): | |
772 | modifier = *f++; | |
773 | break; | |
49fb5799 | 774 | |
fcf08f5b DL |
775 | default: |
776 | modifier = 0; | |
777 | break; | |
778 | } | |
49fb5799 PE |
779 | |
780 | /* Now do the specified format. */ | |
4b7c78fc UD |
781 | format_char = *f; |
782 | switch (format_char) | |
fcf08f5b | 783 | { |
49fb5799 | 784 | #define DO_NUMBER(d, v) \ |
fcf08f5b DL |
785 | digits = d > width ? d : width; \ |
786 | number_value = v; goto do_number | |
49fb5799 | 787 | #define DO_NUMBER_SPACEPAD(d, v) \ |
fcf08f5b DL |
788 | digits = d > width ? d : width; \ |
789 | number_value = v; goto do_number_spacepad | |
790 | ||
791 | case L_('%'): | |
792 | if (modifier != 0) | |
793 | goto bad_format; | |
794 | add (1, *p = *f); | |
795 | break; | |
796 | ||
797 | case L_('a'): | |
798 | if (modifier != 0) | |
799 | goto bad_format; | |
800 | if (change_case) | |
801 | { | |
802 | to_uppcase = 1; | |
803 | to_lowcase = 0; | |
804 | } | |
4b7c78fc | 805 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
fcf08f5b DL |
806 | cpy (aw_len, a_wkday); |
807 | break; | |
4b7c78fc | 808 | #else |
fcf08f5b | 809 | goto underlying_strftime; |
4b7c78fc | 810 | #endif |
49fb5799 | 811 | |
fcf08f5b DL |
812 | case 'A': |
813 | if (modifier != 0) | |
814 | goto bad_format; | |
815 | if (change_case) | |
816 | { | |
817 | to_uppcase = 1; | |
818 | to_lowcase = 0; | |
819 | } | |
4b7c78fc | 820 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
fcf08f5b DL |
821 | cpy (STRLEN (f_wkday), f_wkday); |
822 | break; | |
4b7c78fc | 823 | #else |
fcf08f5b | 824 | goto underlying_strftime; |
4b7c78fc | 825 | #endif |
49fb5799 | 826 | |
fcf08f5b DL |
827 | case L_('b'): |
828 | case L_('h'): | |
829 | if (change_case) | |
830 | { | |
831 | to_uppcase = 1; | |
832 | to_lowcase = 0; | |
833 | } | |
834 | if (modifier != 0) | |
835 | goto bad_format; | |
4b7c78fc | 836 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
fcf08f5b DL |
837 | cpy (am_len, a_month); |
838 | break; | |
4b7c78fc | 839 | #else |
fcf08f5b | 840 | goto underlying_strftime; |
4b7c78fc | 841 | #endif |
49fb5799 | 842 | |
fcf08f5b DL |
843 | case L_('B'): |
844 | if (modifier != 0) | |
845 | goto bad_format; | |
846 | if (change_case) | |
847 | { | |
848 | to_uppcase = 1; | |
849 | to_lowcase = 0; | |
850 | } | |
4b7c78fc | 851 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
fcf08f5b DL |
852 | cpy (STRLEN (f_month), f_month); |
853 | break; | |
4b7c78fc | 854 | #else |
fcf08f5b | 855 | goto underlying_strftime; |
4b7c78fc | 856 | #endif |
49fb5799 | 857 | |
fcf08f5b DL |
858 | case L_('c'): |
859 | if (modifier == L_('O')) | |
860 | goto bad_format; | |
49fb5799 | 861 | #ifdef _NL_CURRENT |
fcf08f5b DL |
862 | if (! (modifier == 'E' |
863 | && (*(subfmt = | |
864 | (const CHAR_T *) _NL_CURRENT (LC_TIME, | |
865 | NLW(ERA_D_T_FMT))) | |
866 | != '\0'))) | |
867 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
49fb5799 | 868 | #else |
4b7c78fc | 869 | # if HAVE_STRFTIME |
fcf08f5b | 870 | goto underlying_strftime; |
4b7c78fc | 871 | # else |
fcf08f5b | 872 | subfmt = L_("%a %b %e %H:%M:%S %Y"); |
4b7c78fc | 873 | # endif |
49fb5799 PE |
874 | #endif |
875 | ||
fcf08f5b DL |
876 | subformat: |
877 | { | |
878 | CHAR_T *old_start = p; | |
879 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, | |
880 | tp extra_args LOCALE_ARG); | |
881 | add (len, my_strftime (p, maxsize - i, subfmt, | |
882 | tp extra_args LOCALE_ARG)); | |
883 | ||
884 | if (to_uppcase) | |
885 | while (old_start < p) | |
886 | { | |
887 | *old_start = TOUPPER ((UCHAR_T) *old_start, loc); | |
888 | ++old_start; | |
889 | } | |
890 | } | |
891 | break; | |
49fb5799 | 892 | |
4b7c78fc | 893 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) |
fcf08f5b DL |
894 | underlying_strftime: |
895 | { | |
896 | /* The relevant information is available only via the | |
897 | underlying strftime implementation, so use that. */ | |
898 | char ufmt[4]; | |
899 | char *u = ufmt; | |
900 | char ubuf[1024]; /* enough for any single format in practice */ | |
901 | size_t len; | |
902 | /* Make sure we're calling the actual underlying strftime. | |
903 | In some cases, config.h contains something like | |
904 | "#define strftime rpl_strftime". */ | |
e50517d9 GM |
905 | # ifdef strftime |
906 | # undef strftime | |
fcf08f5b | 907 | size_t strftime (); |
e50517d9 GM |
908 | # endif |
909 | ||
6e396aa6 JR |
910 | #ifdef STRFTIME_NO_POSIX2 |
911 | /* Some system libraries do not support the POSIX.2 extensions. | |
912 | In those cases, convert %h to %b, and strip modifiers. */ | |
913 | modifier = 0; | |
914 | if (format_char == 'h') | |
915 | format_char = 'b'; | |
916 | #endif | |
e50517d9 GM |
917 | *u++ = '%'; |
918 | if (modifier != 0) | |
919 | *u++ = modifier; | |
920 | *u++ = format_char; | |
921 | *u = '\0'; | |
922 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
923 | if (len == 0 && ubuf[0] != '\0') | |
924 | return 0; | |
925 | cpy (len, ubuf); | |
926 | } | |
927 | break; | |
4b7c78fc UD |
928 | #endif |
929 | ||
fcf08f5b | 930 | case L_('C'): |
e50517d9 GM |
931 | if (modifier == L_('O')) |
932 | goto bad_format; | |
933 | if (modifier == L_('E')) | |
934 | { | |
4b7c78fc | 935 | #if HAVE_STRUCT_ERA_ENTRY |
fcf08f5b DL |
936 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
937 | if (era) | |
938 | { | |
e50517d9 | 939 | # ifdef COMPILE_WIDE |
fcf08f5b DL |
940 | size_t len = __wcslen (era->era_wname); |
941 | cpy (len, era->era_wname); | |
e50517d9 | 942 | # else |
fcf08f5b DL |
943 | size_t len = strlen (era->era_name); |
944 | cpy (len, era->era_name); | |
e50517d9 | 945 | # endif |
fcf08f5b DL |
946 | break; |
947 | } | |
4b7c78fc UD |
948 | #else |
949 | # if HAVE_STRFTIME | |
fcf08f5b | 950 | goto underlying_strftime; |
4b7c78fc | 951 | # endif |
49fb5799 | 952 | #endif |
fcf08f5b | 953 | } |
4b7c78fc | 954 | |
fcf08f5b DL |
955 | { |
956 | int year = tp->tm_year + TM_YEAR_BASE; | |
957 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
958 | } | |
49fb5799 | 959 | |
fcf08f5b DL |
960 | case L_('x'): |
961 | if (modifier == L_('O')) | |
962 | goto bad_format; | |
49fb5799 | 963 | #ifdef _NL_CURRENT |
fcf08f5b DL |
964 | if (! (modifier == L_('E') |
965 | && (*(subfmt = | |
966 | (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT))) | |
967 | != L_('\0')))) | |
968 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
969 | goto subformat; | |
4b7c78fc UD |
970 | #else |
971 | # if HAVE_STRFTIME | |
fcf08f5b | 972 | goto underlying_strftime; |
4b7c78fc | 973 | # else |
fcf08f5b | 974 | /* Fall through. */ |
4b7c78fc UD |
975 | # endif |
976 | #endif | |
fcf08f5b DL |
977 | case L_('D'): |
978 | if (modifier != 0) | |
979 | goto bad_format; | |
980 | subfmt = L_("%m/%d/%y"); | |
981 | goto subformat; | |
49fb5799 | 982 | |
fcf08f5b DL |
983 | case L_('d'): |
984 | if (modifier == L_('E')) | |
985 | goto bad_format; | |
49fb5799 | 986 | |
fcf08f5b | 987 | DO_NUMBER (2, tp->tm_mday); |
49fb5799 | 988 | |
fcf08f5b DL |
989 | case L_('e'): |
990 | if (modifier == L_('E')) | |
991 | goto bad_format; | |
49fb5799 | 992 | |
fcf08f5b | 993 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
49fb5799 | 994 | |
fcf08f5b DL |
995 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
996 | jump to one of these two labels. */ | |
49fb5799 | 997 | |
fcf08f5b DL |
998 | do_number_spacepad: |
999 | /* Force `_' flag unless overridden by `0' or `-' flag. */ | |
1000 | if (pad != L_('0') && pad != L_('-')) | |
1001 | pad = L_('_'); | |
49fb5799 | 1002 | |
fcf08f5b DL |
1003 | do_number: |
1004 | /* Format the number according to the MODIFIER flag. */ | |
49fb5799 | 1005 | |
fcf08f5b DL |
1006 | if (modifier == L_('O') && 0 <= number_value) |
1007 | { | |
4b7c78fc | 1008 | #ifdef _NL_CURRENT |
fcf08f5b DL |
1009 | /* Get the locale specific alternate representation of |
1010 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
1011 | const CHAR_T *cp = nl_get_alt_digit (number_value | |
1012 | HELPER_LOCALE_ARG); | |
1013 | ||
1014 | if (cp != NULL) | |
1015 | { | |
1016 | size_t digitlen = STRLEN (cp); | |
1017 | if (digitlen != 0) | |
1018 | { | |
1019 | cpy (digitlen, cp); | |
1020 | break; | |
1021 | } | |
1022 | } | |
4b7c78fc UD |
1023 | #else |
1024 | # if HAVE_STRFTIME | |
fcf08f5b | 1025 | goto underlying_strftime; |
4b7c78fc | 1026 | # endif |
49fb5799 | 1027 | #endif |
fcf08f5b DL |
1028 | } |
1029 | { | |
1030 | unsigned int u = number_value; | |
1031 | ||
1032 | bufp = buf + sizeof (buf) / sizeof (buf[0]); | |
1033 | negative_number = number_value < 0; | |
49fb5799 | 1034 | |
fcf08f5b DL |
1035 | if (negative_number) |
1036 | u = -u; | |
49fb5799 | 1037 | |
fcf08f5b DL |
1038 | do |
1039 | *--bufp = u % 10 + L_('0'); | |
1040 | while ((u /= 10) != 0); | |
1041 | } | |
49fb5799 | 1042 | |
fcf08f5b DL |
1043 | do_number_sign_and_padding: |
1044 | if (negative_number) | |
1045 | *--bufp = L_('-'); | |
1046 | ||
1047 | if (pad != L_('-')) | |
1048 | { | |
1049 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
1050 | - bufp); | |
1051 | ||
1052 | if (padding > 0) | |
1053 | { | |
1054 | if (pad == L_('_')) | |
1055 | { | |
1056 | if ((size_t) padding >= maxsize - i) | |
1057 | return 0; | |
1058 | ||
1059 | if (p) | |
1060 | memset_space (p, padding); | |
1061 | i += padding; | |
1062 | width = width > padding ? width - padding : 0; | |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | if ((size_t) digits >= maxsize - i) | |
1067 | return 0; | |
1068 | ||
1069 | if (negative_number) | |
1070 | { | |
1071 | ++bufp; | |
1072 | ||
1073 | if (p) | |
1074 | *p++ = L_('-'); | |
1075 | ++i; | |
1076 | } | |
1077 | ||
1078 | if (p) | |
1079 | memset_zero (p, padding); | |
1080 | i += padding; | |
1081 | width = 0; | |
1082 | } | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); | |
1087 | break; | |
1088 | ||
1089 | case L_('F'): | |
1090 | if (modifier != 0) | |
1091 | goto bad_format; | |
1092 | subfmt = L_("%Y-%m-%d"); | |
1093 | goto subformat; | |
1094 | ||
1095 | case L_('H'): | |
1096 | if (modifier == L_('E')) | |
1097 | goto bad_format; | |
1098 | ||
1099 | DO_NUMBER (2, tp->tm_hour); | |
1100 | ||
1101 | case L_('I'): | |
1102 | if (modifier == L_('E')) | |
1103 | goto bad_format; | |
1104 | ||
1105 | DO_NUMBER (2, hour12); | |
1106 | ||
1107 | case L_('k'): /* GNU extension. */ | |
1108 | if (modifier == L_('E')) | |
1109 | goto bad_format; | |
1110 | ||
1111 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); | |
1112 | ||
1113 | case L_('l'): /* GNU extension. */ | |
1114 | if (modifier == L_('E')) | |
1115 | goto bad_format; | |
1116 | ||
1117 | DO_NUMBER_SPACEPAD (2, hour12); | |
1118 | ||
1119 | case L_('j'): | |
1120 | if (modifier == L_('E')) | |
1121 | goto bad_format; | |
1122 | ||
1123 | DO_NUMBER (3, 1 + tp->tm_yday); | |
1124 | ||
1125 | case L_('M'): | |
1126 | if (modifier == L_('E')) | |
1127 | goto bad_format; | |
1128 | ||
1129 | DO_NUMBER (2, tp->tm_min); | |
1130 | ||
1131 | case L_('m'): | |
1132 | if (modifier == L_('E')) | |
1133 | goto bad_format; | |
1134 | ||
1135 | DO_NUMBER (2, tp->tm_mon + 1); | |
1136 | ||
1137 | #ifndef _LIBC | |
1138 | case L_('N'): /* GNU extension. */ | |
1139 | if (modifier == L_('E')) | |
1140 | goto bad_format; | |
1141 | ||
1142 | number_value = ns; | |
1143 | if (width != -1) | |
1144 | { | |
1145 | /* Take an explicit width less than 9 as a precision. */ | |
1146 | int j; | |
1147 | for (j = width; j < 9; j++) | |
1148 | number_value /= 10; | |
1149 | } | |
1150 | ||
1151 | DO_NUMBER (9, number_value); | |
1152 | #endif | |
49fb5799 | 1153 | |
fcf08f5b DL |
1154 | case L_('n'): |
1155 | add (1, *p = L_('\n')); | |
1156 | break; | |
49fb5799 | 1157 | |
fcf08f5b DL |
1158 | case L_('P'): |
1159 | to_lowcase = 1; | |
4b7c78fc | 1160 | #if !defined _NL_CURRENT && HAVE_STRFTIME |
fcf08f5b | 1161 | format_char = L_('p'); |
4b7c78fc | 1162 | #endif |
fcf08f5b DL |
1163 | /* FALLTHROUGH */ |
1164 | ||
1165 | case L_('p'): | |
1166 | if (change_case) | |
1167 | { | |
1168 | to_uppcase = 0; | |
1169 | to_lowcase = 1; | |
1170 | } | |
4b7c78fc | 1171 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
fcf08f5b DL |
1172 | cpy (ap_len, ampm); |
1173 | break; | |
4b7c78fc | 1174 | #else |
fcf08f5b | 1175 | goto underlying_strftime; |
4b7c78fc | 1176 | #endif |
49fb5799 | 1177 | |
fcf08f5b DL |
1178 | case L_('R'): |
1179 | subfmt = L_("%H:%M"); | |
1180 | goto subformat; | |
49fb5799 | 1181 | |
fcf08f5b | 1182 | case L_('r'): |
49fb5799 | 1183 | #ifdef _NL_CURRENT |
fcf08f5b DL |
1184 | if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, |
1185 | NLW(T_FMT_AMPM))) | |
1186 | == L_('\0')) | |
49fb5799 | 1187 | #endif |
fcf08f5b DL |
1188 | subfmt = L_("%I:%M:%S %p"); |
1189 | goto subformat; | |
49fb5799 | 1190 | |
fcf08f5b DL |
1191 | case L_('S'): |
1192 | if (modifier == L_('E')) | |
1193 | goto bad_format; | |
49fb5799 | 1194 | |
fcf08f5b | 1195 | DO_NUMBER (2, tp->tm_sec); |
49fb5799 | 1196 | |
fcf08f5b DL |
1197 | case L_('s'): /* GNU extension. */ |
1198 | { | |
1199 | struct tm ltm; | |
1200 | time_t t; | |
49fb5799 | 1201 | |
fcf08f5b DL |
1202 | ltm = *tp; |
1203 | t = mktime (<m); | |
49fb5799 | 1204 | |
fcf08f5b DL |
1205 | /* Generate string value for T using time_t arithmetic; |
1206 | this works even if sizeof (long) < sizeof (time_t). */ | |
49fb5799 | 1207 | |
fcf08f5b DL |
1208 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
1209 | negative_number = t < 0; | |
49fb5799 | 1210 | |
fcf08f5b DL |
1211 | do |
1212 | { | |
1213 | int d = t % 10; | |
1214 | t /= 10; | |
49fb5799 | 1215 | |
fcf08f5b DL |
1216 | if (negative_number) |
1217 | { | |
1218 | d = -d; | |
49fb5799 | 1219 | |
fcf08f5b DL |
1220 | /* Adjust if division truncates to minus infinity. */ |
1221 | if (0 < -1 % 10 && d < 0) | |
1222 | { | |
1223 | t++; | |
1224 | d += 10; | |
1225 | } | |
1226 | } | |
49fb5799 | 1227 | |
fcf08f5b DL |
1228 | *--bufp = d + L_('0'); |
1229 | } | |
1230 | while (t != 0); | |
49fb5799 | 1231 | |
fcf08f5b DL |
1232 | digits = 1; |
1233 | goto do_number_sign_and_padding; | |
1234 | } | |
49fb5799 | 1235 | |
fcf08f5b DL |
1236 | case L_('X'): |
1237 | if (modifier == L_('O')) | |
1238 | goto bad_format; | |
49fb5799 | 1239 | #ifdef _NL_CURRENT |
fcf08f5b DL |
1240 | if (! (modifier == L_('E') |
1241 | && (*(subfmt = | |
1242 | (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT))) | |
1243 | != L_('\0')))) | |
1244 | subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1245 | goto subformat; | |
4b7c78fc UD |
1246 | #else |
1247 | # if HAVE_STRFTIME | |
fcf08f5b | 1248 | goto underlying_strftime; |
4b7c78fc | 1249 | # else |
fcf08f5b | 1250 | /* Fall through. */ |
4b7c78fc UD |
1251 | # endif |
1252 | #endif | |
fcf08f5b DL |
1253 | case L_('T'): |
1254 | subfmt = L_("%H:%M:%S"); | |
1255 | goto subformat; | |
1256 | ||
1257 | case L_('t'): | |
1258 | add (1, *p = L_('\t')); | |
1259 | break; | |
1260 | ||
1261 | case L_('u'): | |
1262 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1263 | ||
1264 | case L_('U'): | |
1265 | if (modifier == L_('E')) | |
1266 | goto bad_format; | |
1267 | ||
1268 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1269 | ||
1270 | case L_('V'): | |
1271 | case L_('g'): | |
1272 | case L_('G'): | |
1273 | if (modifier == L_('E')) | |
1274 | goto bad_format; | |
1275 | { | |
1276 | int year = tp->tm_year + TM_YEAR_BASE; | |
1277 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1278 | ||
1279 | if (days < 0) | |
1280 | { | |
1281 | /* This ISO week belongs to the previous year. */ | |
1282 | year--; | |
1283 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
1284 | tp->tm_wday); | |
1285 | } | |
1286 | else | |
1287 | { | |
1288 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1289 | tp->tm_wday); | |
1290 | if (0 <= d) | |
1291 | { | |
1292 | /* This ISO week belongs to the next year. */ | |
1293 | year++; | |
1294 | days = d; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | switch (*f) | |
1299 | { | |
1300 | case L_('g'): | |
1301 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
1302 | ||
1303 | case L_('G'): | |
1304 | DO_NUMBER (1, year); | |
1305 | ||
1306 | default: | |
1307 | DO_NUMBER (2, days / 7 + 1); | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | case L_('W'): | |
1312 | if (modifier == L_('E')) | |
1313 | goto bad_format; | |
1314 | ||
1315 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1316 | ||
1317 | case L_('w'): | |
1318 | if (modifier == L_('E')) | |
1319 | goto bad_format; | |
1320 | ||
1321 | DO_NUMBER (1, tp->tm_wday); | |
1322 | ||
1323 | case L_('Y'): | |
1324 | if (modifier == 'E') | |
1325 | { | |
4b7c78fc | 1326 | #if HAVE_STRUCT_ERA_ENTRY |
fcf08f5b DL |
1327 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1328 | if (era) | |
1329 | { | |
e50517d9 | 1330 | # ifdef COMPILE_WIDE |
fcf08f5b | 1331 | subfmt = era->era_wformat; |
e50517d9 | 1332 | # else |
fcf08f5b | 1333 | subfmt = era->era_format; |
e50517d9 | 1334 | # endif |
fcf08f5b DL |
1335 | goto subformat; |
1336 | } | |
4b7c78fc UD |
1337 | #else |
1338 | # if HAVE_STRFTIME | |
fcf08f5b | 1339 | goto underlying_strftime; |
4b7c78fc | 1340 | # endif |
49fb5799 | 1341 | #endif |
fcf08f5b DL |
1342 | } |
1343 | if (modifier == L_('O')) | |
1344 | goto bad_format; | |
1345 | else | |
1346 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
1347 | ||
1348 | case L_('y'): | |
1349 | if (modifier == L_('E')) | |
1350 | { | |
4b7c78fc | 1351 | #if HAVE_STRUCT_ERA_ENTRY |
fcf08f5b DL |
1352 | struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG); |
1353 | if (era) | |
1354 | { | |
1355 | int delta = tp->tm_year - era->start_date[0]; | |
1356 | DO_NUMBER (1, (era->offset | |
1357 | + delta * era->absolute_direction)); | |
1358 | } | |
4b7c78fc UD |
1359 | #else |
1360 | # if HAVE_STRFTIME | |
fcf08f5b | 1361 | goto underlying_strftime; |
4b7c78fc | 1362 | # endif |
49fb5799 | 1363 | #endif |
fcf08f5b DL |
1364 | } |
1365 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); | |
49fb5799 | 1366 | |
fcf08f5b DL |
1367 | case L_('Z'): |
1368 | if (change_case) | |
1369 | { | |
1370 | to_uppcase = 0; | |
1371 | to_lowcase = 1; | |
1372 | } | |
68c45bf0 PE |
1373 | |
1374 | #if HAVE_TZNAME | |
fcf08f5b DL |
1375 | /* The tzset() call might have changed the value. */ |
1376 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1377 | zone = tzname[tp->tm_isdst]; | |
68c45bf0 | 1378 | #endif |
fcf08f5b DL |
1379 | if (! zone) |
1380 | zone = ""; | |
e50517d9 GM |
1381 | |
1382 | #ifdef COMPILE_WIDE | |
fcf08f5b DL |
1383 | { |
1384 | /* The zone string is always given in multibyte form. We have | |
1385 | to transform it first. */ | |
1386 | wchar_t *wczone; | |
1387 | size_t len; | |
1388 | widen (zone, wczone, len); | |
1389 | cpy (len, wczone); | |
1390 | } | |
e50517d9 | 1391 | #else |
fcf08f5b | 1392 | cpy (strlen (zone), zone); |
e50517d9 | 1393 | #endif |
fcf08f5b | 1394 | break; |
49fb5799 | 1395 | |
fcf08f5b DL |
1396 | case L_('z'): |
1397 | if (tp->tm_isdst < 0) | |
1398 | break; | |
49fb5799 | 1399 | |
fcf08f5b DL |
1400 | { |
1401 | int diff; | |
49fb5799 | 1402 | #if HAVE_TM_GMTOFF |
fcf08f5b | 1403 | diff = tp->tm_gmtoff; |
49fb5799 | 1404 | #else |
fcf08f5b DL |
1405 | if (ut) |
1406 | diff = 0; | |
1407 | else | |
1408 | { | |
1409 | struct tm gtm; | |
1410 | struct tm ltm; | |
1411 | time_t lt; | |
1412 | ||
1413 | ltm = *tp; | |
1414 | lt = mktime (<m); | |
1415 | ||
1416 | if (lt == (time_t) -1) | |
1417 | { | |
1418 | /* mktime returns -1 for errors, but -1 is also a | |
1419 | valid time_t value. Check whether an error really | |
1420 | occurred. */ | |
1421 | struct tm tm; | |
1422 | ||
1423 | if (! my_strftime_localtime_r (<, &tm) | |
1424 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1425 | | (ltm.tm_min ^ tm.tm_min) | |
1426 | | (ltm.tm_hour ^ tm.tm_hour) | |
1427 | | (ltm.tm_mday ^ tm.tm_mday) | |
1428 | | (ltm.tm_mon ^ tm.tm_mon) | |
1429 | | (ltm.tm_year ^ tm.tm_year))) | |
1430 | break; | |
1431 | } | |
1432 | ||
1433 | if (! my_strftime_gmtime_r (<, >m)) | |
1434 | break; | |
1435 | ||
1436 | diff = tm_diff (<m, >m); | |
1437 | } | |
49fb5799 PE |
1438 | #endif |
1439 | ||
fcf08f5b DL |
1440 | if (diff < 0) |
1441 | { | |
1442 | add (1, *p = L_('-')); | |
1443 | diff = -diff; | |
1444 | } | |
1445 | else | |
1446 | add (1, *p = L_('+')); | |
1447 | ||
1448 | diff /= 60; | |
1449 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
1450 | } | |
1451 | ||
1452 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1453 | --f; | |
1454 | /* Fall through. */ | |
1455 | default: | |
1456 | /* Unknown format; output the format, including the '%', | |
1457 | since this is most likely the right thing to do if a | |
1458 | multibyte string has been misparsed. */ | |
1459 | bad_format: | |
1460 | { | |
1461 | int flen; | |
1462 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1463 | continue; | |
1464 | cpy (flen, &f[1 - flen]); | |
1465 | } | |
1466 | break; | |
1467 | } | |
49fb5799 PE |
1468 | } |
1469 | ||
68c45bf0 | 1470 | if (p && maxsize != 0) |
e50517d9 | 1471 | *p = L_('\0'); |
49fb5799 PE |
1472 | return i; |
1473 | } | |
fcf08f5b DL |
1474 | #ifdef _LIBC |
1475 | libc_hidden_def (my_strftime) | |
1476 | #endif | |
e50517d9 GM |
1477 | |
1478 | ||
1479 | #ifdef emacs | |
fcf08f5b | 1480 | #undef ut |
e50517d9 | 1481 | /* For Emacs we have a separate interface which corresponds to the normal |
fcf08f5b | 1482 | strftime function plus the ut argument, but without the ns argument. */ |
e50517d9 | 1483 | size_t |
fcf08f5b | 1484 | emacs_strftimeu (s, maxsize, format, tp, ut) |
e50517d9 GM |
1485 | char *s; |
1486 | size_t maxsize; | |
1487 | const char *format; | |
1488 | const struct tm *tp; | |
fcf08f5b | 1489 | int ut; |
e50517d9 | 1490 | { |
fcf08f5b | 1491 | return my_strftime (s, maxsize, format, tp, ut, 0); |
e50517d9 GM |
1492 | } |
1493 | #endif | |
ab5796a9 MB |
1494 | |
1495 | /* arch-tag: 662bc9c4-f8e2-41b6-bf96-b8346d0ce0d8 | |
1496 | (do not change this comment) */ |