Commit | Line | Data |
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1da6faed | 1 | /* Copyright (C) 1991,92,93,94,95,96,97,98,99,2000 Free Software Foundation, Inc. |
e50517d9 | 2 | This file is part of the GNU Emacs. |
8ce9b63e | 3 | |
e50517d9 GM |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8ce9b63e | 8 | |
e50517d9 | 9 | The GNU C Library is distributed in the hope that it will be useful, |
89752145 | 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
e50517d9 GM |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Library General Public License for more details. | |
8ce9b63e | 13 | |
e50517d9 GM |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
49fb5799 PE |
18 | |
19 | #ifdef HAVE_CONFIG_H | |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
23 | #ifdef _LIBC | |
24 | # define HAVE_LIMITS_H 1 | |
25 | # define HAVE_MBLEN 1 | |
26 | # define HAVE_MBRLEN 1 | |
27 | # define HAVE_STRUCT_ERA_ENTRY 1 | |
28 | # define HAVE_TM_GMTOFF 1 | |
29 | # define HAVE_TM_ZONE 1 | |
30 | # define HAVE_TZNAME 1 | |
31 | # define HAVE_TZSET 1 | |
32 | # define MULTIBYTE_IS_FORMAT_SAFE 1 | |
33 | # define STDC_HEADERS 1 | |
49fb5799 PE |
34 | # include "../locale/localeinfo.h" |
35 | #endif | |
36 | ||
ffa0434b PE |
37 | #if defined emacs && !defined HAVE_BCOPY |
38 | # define HAVE_MEMCPY 1 | |
39 | #endif | |
40 | ||
49fb5799 | 41 | #include <ctype.h> |
e50517d9 | 42 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
49fb5799 PE |
43 | |
44 | #ifdef TIME_WITH_SYS_TIME | |
45 | # include <sys/time.h> | |
46 | # include <time.h> | |
47 | #else | |
48 | # ifdef HAVE_SYS_TIME_H | |
49 | # include <sys/time.h> | |
50 | # else | |
51 | # include <time.h> | |
52 | # endif | |
53 | #endif | |
54 | #if HAVE_TZNAME | |
03695ace | 55 | #ifndef USE_CRT_DLL |
49fb5799 PE |
56 | extern char *tzname[]; |
57 | #endif | |
03695ace | 58 | #endif |
49fb5799 PE |
59 | |
60 | /* Do multibyte processing if multibytes are supported, unless | |
61 | multibyte sequences are safe in formats. Multibyte sequences are | |
62 | safe if they cannot contain byte sequences that look like format | |
63 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
64 | encoding, which is safe for formats, but strftime.c can be used | |
65 | with other C libraries that use unsafe encodings. */ | |
66 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
67 | ||
68 | #if DO_MULTIBYTE | |
69 | # if HAVE_MBRLEN | |
70 | # include <wchar.h> | |
02521061 RS |
71 | # if !defined (mbsinit) && !defined (HAVE_MBSINIT) |
72 | # define mbsinit(ps) 1 | |
73 | # endif /* !defined (mbsinit) && !defined (HAVE_MBSINIT) */ | |
49fb5799 PE |
74 | # else |
75 | /* Simulate mbrlen with mblen as best we can. */ | |
76 | # define mbstate_t int | |
77 | # define mbrlen(s, n, ps) mblen (s, n) | |
78 | # define mbsinit(ps) (*(ps) == 0) | |
79 | # endif | |
80 | static const mbstate_t mbstate_zero; | |
81 | #endif | |
82 | ||
1da6faed | 83 | #ifdef HAVE_LIMITS_H |
49fb5799 PE |
84 | # include <limits.h> |
85 | #endif | |
86 | ||
1da6faed | 87 | #ifdef STDC_HEADERS |
49fb5799 PE |
88 | # include <stddef.h> |
89 | # include <stdlib.h> | |
49fb5799 | 90 | #else |
1b65a66c PE |
91 | # ifndef HAVE_MEMCPY |
92 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) | |
93 | # endif | |
49fb5799 PE |
94 | #endif |
95 | ||
e50517d9 GM |
96 | #ifdef COMPILE_WIDE |
97 | # include <endian.h> | |
98 | # define CHAR_T wchar_t | |
99 | # define UCHAR_T unsigned int | |
100 | # define L_(Str) L##Str | |
101 | # define NLW(Sym) _NL_W##Sym | |
102 | ||
103 | # define MEMCPY(d, s, n) __wmemcpy (d, s, n) | |
104 | # define STRLEN(s) __wcslen (s) | |
105 | ||
4e941b8e | 106 | #else |
e50517d9 GM |
107 | # define CHAR_T char |
108 | # define UCHAR_T unsigned char | |
109 | # define L_(Str) Str | |
110 | # define NLW(Sym) Sym | |
111 | ||
112 | # if !defined STDC_HEADERS && !defined HAVE_MEMCPY | |
113 | # define MEMCPY(d, s, n) bcopy ((s), (d), (n)) | |
114 | # else | |
115 | # define MEMCPY(d, s, n) memcpy ((d), (s), (n)) | |
116 | # endif | |
117 | # define STRLEN(s) strlen (s) | |
118 | ||
119 | # ifdef _LIBC | |
120 | # define MEMPCPY(d, s, n) __mempcpy (d, s, n) | |
121 | # else | |
122 | # ifndef HAVE_MEMPCPY | |
123 | # define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n))) | |
124 | # endif | |
4e941b8e UD |
125 | # endif |
126 | #endif | |
127 | ||
49fb5799 | 128 | #ifndef __P |
e50517d9 GM |
129 | # if defined emacs && defined PROTOTYPES |
130 | # define __P(args) args | |
131 | # elif defined __GNUC__ || (defined __STDC__ && __STDC__) | |
49fb5799 PE |
132 | # define __P(args) args |
133 | # else | |
134 | # define __P(args) () | |
135 | # endif /* GCC. */ | |
136 | #endif /* Not __P. */ | |
137 | ||
138 | #ifndef PTR | |
139 | # ifdef __STDC__ | |
140 | # define PTR void * | |
141 | # else | |
142 | # define PTR char * | |
143 | # endif | |
144 | #endif | |
145 | ||
146 | #ifndef CHAR_BIT | |
147 | # define CHAR_BIT 8 | |
148 | #endif | |
149 | ||
150 | #ifndef NULL | |
151 | # define NULL 0 | |
152 | #endif | |
153 | ||
154 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
155 | ||
156 | /* Bound on length of the string representing an integer value of type t. | |
157 | Subtract one for the sign bit if t is signed; | |
158 | 302 / 1000 is log10 (2) rounded up; | |
159 | add one for integer division truncation; | |
160 | add one more for a minus sign if t is signed. */ | |
161 | #define INT_STRLEN_BOUND(t) \ | |
68c45bf0 | 162 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) |
49fb5799 PE |
163 | |
164 | #define TM_YEAR_BASE 1900 | |
165 | ||
166 | #ifndef __isleap | |
167 | /* Nonzero if YEAR is a leap year (every 4 years, | |
168 | except every 100th isn't, and every 400th is). */ | |
e50517d9 | 169 | # define __isleap(year) \ |
49fb5799 PE |
170 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
171 | #endif | |
172 | ||
173 | ||
174 | #ifdef _LIBC | |
68c45bf0 PE |
175 | # define my_strftime_gmtime_r __gmtime_r |
176 | # define my_strftime_localtime_r __localtime_r | |
49fb5799 PE |
177 | # define tzname __tzname |
178 | # define tzset __tzset | |
179 | #else | |
68c45bf0 PE |
180 | |
181 | /* If we're a strftime substitute in a GNU program, then prefer gmtime | |
182 | to gmtime_r, since many gmtime_r implementations are buggy. | |
183 | Similarly for localtime_r. */ | |
184 | ||
185 | # if ! HAVE_TM_GMTOFF | |
186 | static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *)); | |
49fb5799 | 187 | static struct tm * |
68c45bf0 | 188 | my_strftime_gmtime_r (t, tp) |
49fb5799 PE |
189 | const time_t *t; |
190 | struct tm *tp; | |
191 | { | |
192 | struct tm *l = gmtime (t); | |
193 | if (! l) | |
194 | return 0; | |
195 | *tp = *l; | |
196 | return tp; | |
197 | } | |
68c45bf0 | 198 | # endif /* ! HAVE_TM_GMTOFF */ |
49fb5799 | 199 | |
68c45bf0 | 200 | static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *)); |
49fb5799 | 201 | static struct tm * |
68c45bf0 | 202 | my_strftime_localtime_r (t, tp) |
49fb5799 PE |
203 | const time_t *t; |
204 | struct tm *tp; | |
205 | { | |
206 | struct tm *l = localtime (t); | |
207 | if (! l) | |
208 | return 0; | |
209 | *tp = *l; | |
210 | return tp; | |
211 | } | |
649e97a3 | 212 | #endif /* ! defined _LIBC */ |
49fb5799 PE |
213 | |
214 | ||
1b65a66c | 215 | #if !defined memset && !defined HAVE_MEMSET && !defined _LIBC |
49fb5799 PE |
216 | /* Some systems lack the `memset' function and we don't want to |
217 | introduce additional dependencies. */ | |
c72e6644 RS |
218 | /* The SGI compiler reportedly barfs on the trailing null |
219 | if we use a string constant as the initializer. 28 June 1997, rms. */ | |
e50517d9 GM |
220 | static const CHAR_T spaces[16] = /* " " */ |
221 | { | |
222 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '), | |
223 | L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ') | |
224 | }; | |
225 | static const CHAR_T zeroes[16] = /* "0000000000000000" */ | |
226 | { | |
227 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'), | |
228 | L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0') | |
229 | }; | |
49fb5799 PE |
230 | |
231 | # define memset_space(P, Len) \ | |
e50517d9 GM |
232 | do { \ |
233 | int _len = (Len); \ | |
234 | \ | |
235 | do \ | |
236 | { \ | |
237 | int _this = _len > 16 ? 16 : _len; \ | |
238 | (P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T)); \ | |
239 | _len -= _this; \ | |
240 | } \ | |
241 | while (_len > 0); \ | |
49fb5799 | 242 | } while (0) |
098401cf PE |
243 | |
244 | # define memset_zero(P, Len) \ | |
e50517d9 GM |
245 | do { \ |
246 | int _len = (Len); \ | |
247 | \ | |
248 | do \ | |
249 | { \ | |
250 | int _this = _len > 16 ? 16 : _len; \ | |
251 | (P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T)); \ | |
252 | _len -= _this; \ | |
253 | } \ | |
254 | while (_len > 0); \ | |
098401cf | 255 | } while (0) |
49fb5799 | 256 | #else |
e50517d9 GM |
257 | # ifdef COMPILE_WIDE |
258 | # define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len)) | |
259 | # define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len)) | |
260 | # else | |
261 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) | |
262 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) | |
263 | # endif | |
49fb5799 PE |
264 | #endif |
265 | ||
e50517d9 GM |
266 | #define add(n, f) \ |
267 | do \ | |
268 | { \ | |
269 | int _n = (n); \ | |
270 | int _delta = width - _n; \ | |
271 | int _incr = _n + (_delta > 0 ? _delta : 0); \ | |
272 | if (i + _incr >= maxsize) \ | |
273 | return 0; \ | |
274 | if (p) \ | |
275 | { \ | |
276 | if (_delta > 0) \ | |
277 | { \ | |
278 | if (pad == L_('0')) \ | |
279 | memset_zero (p, _delta); \ | |
280 | else \ | |
281 | memset_space (p, _delta); \ | |
282 | } \ | |
283 | f; \ | |
284 | p += _n; \ | |
285 | } \ | |
286 | i += _incr; \ | |
49fb5799 PE |
287 | } while (0) |
288 | ||
1b65a66c | 289 | #define cpy(n, s) \ |
e50517d9 GM |
290 | add ((n), \ |
291 | if (to_lowcase) \ | |
292 | memcpy_lowcase (p, (s), _n); \ | |
293 | else if (to_uppcase) \ | |
294 | memcpy_uppcase (p, (s), _n); \ | |
295 | else \ | |
296 | MEMCPY ((PTR) p, (PTR) (s), _n)) | |
297 | ||
298 | #ifdef COMPILE_WIDE | |
299 | # define widen(os, ws, l) \ | |
300 | { \ | |
301 | mbstate_t __st; \ | |
302 | const char *__s = os; \ | |
303 | memset (&__st, '\0', sizeof (__st)); \ | |
304 | l = __mbsrtowcs (NULL, &__s, 0, &__st); \ | |
305 | ws = alloca ((l + 1) * sizeof (wchar_t)); \ | |
306 | (void) __mbsrtowcs (ws, &__s, l, &__st); \ | |
307 | } | |
308 | #endif | |
49fb5799 PE |
309 | |
310 | ||
e50517d9 GM |
311 | #ifdef COMPILE_WIDE |
312 | # define TOUPPER(Ch) towupper (Ch) | |
313 | # define TOLOWER(Ch) towlower (Ch) | |
49fb5799 | 314 | #else |
e50517d9 GM |
315 | # ifdef _LIBC |
316 | # define TOUPPER(Ch) toupper (Ch) | |
317 | # define TOLOWER(Ch) tolower (Ch) | |
318 | # else | |
319 | # define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch)) | |
320 | # define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
321 | # endif | |
49fb5799 PE |
322 | #endif |
323 | /* We don't use `isdigit' here since the locale dependent | |
324 | interpretation is not what we want here. We only need to accept | |
325 | the arabic digits in the ASCII range. One day there is perhaps a | |
326 | more reliable way to accept other sets of digits. */ | |
e50517d9 | 327 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9) |
49fb5799 | 328 | |
e50517d9 GM |
329 | static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src, |
330 | size_t len)); | |
49fb5799 | 331 | |
e50517d9 | 332 | static CHAR_T * |
49fb5799 | 333 | memcpy_lowcase (dest, src, len) |
e50517d9 GM |
334 | CHAR_T *dest; |
335 | const CHAR_T *src; | |
49fb5799 PE |
336 | size_t len; |
337 | { | |
338 | while (len-- > 0) | |
e50517d9 | 339 | dest[len] = TOLOWER ((UCHAR_T) src[len]); |
49fb5799 PE |
340 | return dest; |
341 | } | |
342 | ||
e50517d9 GM |
343 | static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src, |
344 | size_t len)); | |
49fb5799 | 345 | |
e50517d9 | 346 | static CHAR_T * |
49fb5799 | 347 | memcpy_uppcase (dest, src, len) |
e50517d9 GM |
348 | CHAR_T *dest; |
349 | const CHAR_T *src; | |
49fb5799 PE |
350 | size_t len; |
351 | { | |
352 | while (len-- > 0) | |
e50517d9 | 353 | dest[len] = TOUPPER ((UCHAR_T) src[len]); |
49fb5799 PE |
354 | return dest; |
355 | } | |
356 | ||
1b65a66c | 357 | |
49fb5799 PE |
358 | #if ! HAVE_TM_GMTOFF |
359 | /* Yield the difference between *A and *B, | |
360 | measured in seconds, ignoring leap seconds. */ | |
1b65a66c | 361 | # define tm_diff ftime_tm_diff |
49fb5799 PE |
362 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
363 | static int | |
364 | tm_diff (a, b) | |
365 | const struct tm *a; | |
366 | const struct tm *b; | |
367 | { | |
368 | /* Compute intervening leap days correctly even if year is negative. | |
369 | Take care to avoid int overflow in leap day calculations, | |
370 | but it's OK to assume that A and B are close to each other. */ | |
371 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
372 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
373 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
374 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
375 | int a400 = a100 >> 2; | |
376 | int b400 = b100 >> 2; | |
377 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
378 | int years = a->tm_year - b->tm_year; | |
379 | int days = (365 * years + intervening_leap_days | |
e50517d9 | 380 | + (a->tm_yday - b->tm_yday)); |
49fb5799 | 381 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
e50517d9 GM |
382 | + (a->tm_min - b->tm_min)) |
383 | + (a->tm_sec - b->tm_sec)); | |
49fb5799 PE |
384 | } |
385 | #endif /* ! HAVE_TM_GMTOFF */ | |
386 | ||
387 | ||
388 | ||
389 | /* The number of days from the first day of the first ISO week of this | |
390 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
391 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
392 | be as small as YDAY_MINIMUM. */ | |
393 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
394 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
395 | #define YDAY_MINIMUM (-366) | |
396 | static int iso_week_days __P ((int, int)); | |
397 | #ifdef __GNUC__ | |
ffa0434b | 398 | __inline__ |
49fb5799 PE |
399 | #endif |
400 | static int | |
401 | iso_week_days (yday, wday) | |
402 | int yday; | |
403 | int wday; | |
404 | { | |
405 | /* Add enough to the first operand of % to make it nonnegative. */ | |
406 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
407 | return (yday | |
e50517d9 GM |
408 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 |
409 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
49fb5799 PE |
410 | } |
411 | ||
412 | ||
4b7c78fc | 413 | #if !(defined _NL_CURRENT || HAVE_STRFTIME) |
e50517d9 | 414 | static CHAR_T const weekday_name[][10] = |
49fb5799 | 415 | { |
e50517d9 GM |
416 | L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"), |
417 | L_("Thursday"), L_("Friday"), L_("Saturday") | |
49fb5799 | 418 | }; |
e50517d9 | 419 | static CHAR_T const month_name[][10] = |
49fb5799 | 420 | { |
e50517d9 GM |
421 | L_("January"), L_("February"), L_("March"), L_("April"), L_("May"), |
422 | L_("June"), L_("July"), L_("August"), L_("September"), L_("October"), | |
423 | L_("November"), L_("December") | |
49fb5799 PE |
424 | }; |
425 | #endif | |
426 | ||
427 | ||
4b7c78fc | 428 | #ifdef emacs |
68c45bf0 PE |
429 | # define my_strftime emacs_strftimeu |
430 | # define ut_argument , ut | |
431 | # define ut_argument_spec int ut; | |
432 | # define ut_argument_spec_iso , int ut | |
4b7c78fc | 433 | #else |
e50517d9 GM |
434 | # ifdef COMPILE_WIDE |
435 | # define my_strftime wcsftime | |
436 | # else | |
437 | # define my_strftime strftime | |
438 | # endif | |
68c45bf0 PE |
439 | # define ut_argument |
440 | # define ut_argument_spec | |
441 | # define ut_argument_spec_iso | |
442 | /* We don't have this information in general. */ | |
443 | # define ut 0 | |
4b7c78fc UD |
444 | #endif |
445 | ||
ea456eb4 | 446 | #if !defined _LIBC && !defined(WINDOWSNT) && HAVE_TZNAME && HAVE_TZSET |
49fb5799 PE |
447 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. |
448 | Work around this bug by copying *tp before it might be munged. */ | |
449 | size_t _strftime_copytm __P ((char *, size_t, const char *, | |
e50517d9 | 450 | const struct tm * ut_argument_spec_iso)); |
49fb5799 | 451 | size_t |
68c45bf0 | 452 | my_strftime (s, maxsize, format, tp ut_argument) |
e50517d9 | 453 | CHAR_T *s; |
49fb5799 | 454 | size_t maxsize; |
e50517d9 | 455 | const CHAR_T *format; |
49fb5799 | 456 | const struct tm *tp; |
68c45bf0 | 457 | ut_argument_spec |
49fb5799 PE |
458 | { |
459 | struct tm tmcopy; | |
460 | tmcopy = *tp; | |
68c45bf0 | 461 | return _strftime_copytm (s, maxsize, format, &tmcopy ut_argument); |
49fb5799 | 462 | } |
4b7c78fc | 463 | # undef my_strftime |
ea456eb4 | 464 | # define my_strftime _strftime_copytm |
49fb5799 PE |
465 | #endif |
466 | ||
467 | ||
468 | /* Write information from TP into S according to the format | |
469 | string FORMAT, writing no more that MAXSIZE characters | |
470 | (including the terminating '\0') and returning number of | |
471 | characters written. If S is NULL, nothing will be written | |
472 | anywhere, so to determine how many characters would be | |
473 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
474 | size_t | |
68c45bf0 | 475 | my_strftime (s, maxsize, format, tp ut_argument) |
e50517d9 | 476 | CHAR_T *s; |
49fb5799 | 477 | size_t maxsize; |
e50517d9 | 478 | const CHAR_T *format; |
49fb5799 | 479 | const struct tm *tp; |
68c45bf0 | 480 | ut_argument_spec |
49fb5799 PE |
481 | { |
482 | int hour12 = tp->tm_hour; | |
483 | #ifdef _NL_CURRENT | |
68c45bf0 PE |
484 | /* We cannot make the following values variables since we must delay |
485 | the evaluation of these values until really needed since some | |
486 | expressions might not be valid in every situation. The `struct tm' | |
487 | might be generated by a strptime() call that initialized | |
488 | only a few elements. Dereference the pointers only if the format | |
489 | requires this. Then it is ok to fail if the pointers are invalid. */ | |
e50517d9 GM |
490 | # define a_wkday \ |
491 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)) | |
492 | # define f_wkday \ | |
493 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)) | |
494 | # define a_month \ | |
495 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)) | |
496 | # define f_month \ | |
497 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)) | |
498 | # define ampm \ | |
499 | ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11 \ | |
500 | ? NLW(PM_STR) : NLW(AM_STR))) | |
501 | ||
502 | # define aw_len STRLEN (a_wkday) | |
503 | # define am_len STRLEN (a_month) | |
504 | # define ap_len STRLEN (ampm) | |
49fb5799 | 505 | #else |
4b7c78fc | 506 | # if !HAVE_STRFTIME |
e50517d9 GM |
507 | # define f_wkday (weekday_name[tp->tm_wday]) |
508 | # define f_month (month_name[tp->tm_mon]) | |
509 | # define a_wkday f_wkday | |
510 | # define a_month f_month | |
511 | # define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11)) | |
68c45bf0 | 512 | |
49fb5799 PE |
513 | size_t aw_len = 3; |
514 | size_t am_len = 3; | |
515 | size_t ap_len = 2; | |
4b7c78fc | 516 | # endif |
4b7c78fc | 517 | #endif |
49fb5799 | 518 | const char *zone; |
49fb5799 | 519 | size_t i = 0; |
e50517d9 GM |
520 | CHAR_T *p = s; |
521 | const CHAR_T *f; | |
49fb5799 PE |
522 | |
523 | zone = NULL; | |
1b65a66c PE |
524 | #if HAVE_TM_ZONE |
525 | /* The POSIX test suite assumes that setting | |
49fb5799 PE |
526 | the environment variable TZ to a new value before calling strftime() |
527 | will influence the result (the %Z format) even if the information in | |
1b65a66c PE |
528 | TP is computed with a totally different time zone. |
529 | This is bogus: though POSIX allows bad behavior like this, | |
530 | POSIX does not require it. Do the right thing instead. */ | |
49fb5799 PE |
531 | zone = (const char *) tp->tm_zone; |
532 | #endif | |
533 | #if HAVE_TZNAME | |
68c45bf0 PE |
534 | if (ut) |
535 | { | |
536 | if (! (zone && *zone)) | |
e50517d9 | 537 | zone = "UTC"; |
68c45bf0 PE |
538 | } |
539 | else | |
540 | { | |
541 | /* POSIX.1 8.1.1 requires that whenever strftime() is called, the | |
e50517d9 GM |
542 | time zone names contained in the external variable `tzname' shall |
543 | be set as if the tzset() function had been called. */ | |
49fb5799 | 544 | # if HAVE_TZSET |
68c45bf0 | 545 | tzset (); |
49fb5799 | 546 | # endif |
68c45bf0 | 547 | } |
49fb5799 | 548 | #endif |
49fb5799 PE |
549 | |
550 | if (hour12 > 12) | |
551 | hour12 -= 12; | |
552 | else | |
68c45bf0 PE |
553 | if (hour12 == 0) |
554 | hour12 = 12; | |
49fb5799 PE |
555 | |
556 | for (f = format; *f != '\0'; ++f) | |
557 | { | |
e50517d9 GM |
558 | int pad = 0; /* Padding for number ('-', '_', or 0). */ |
559 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
560 | int digits; /* Max digits for numeric format. */ | |
561 | int number_value; /* Numeric value to be printed. */ | |
562 | int negative_number; /* 1 if the number is negative. */ | |
563 | const CHAR_T *subfmt; | |
564 | CHAR_T *bufp; | |
565 | CHAR_T buf[1 + (sizeof (int) < sizeof (time_t) | |
566 | ? INT_STRLEN_BOUND (time_t) | |
567 | : INT_STRLEN_BOUND (int))]; | |
49fb5799 PE |
568 | int width = -1; |
569 | int to_lowcase = 0; | |
570 | int to_uppcase = 0; | |
1b65a66c | 571 | int change_case = 0; |
4b7c78fc | 572 | int format_char; |
49fb5799 | 573 | |
e50517d9 GM |
574 | #if DO_MULTIBYTE && !defined COMPILE_WIDE |
575 | switch (*f) | |
576 | { | |
577 | case L_('%'): | |
578 | break; | |
579 | ||
580 | case L_('\b'): case L_('\t'): case L_('\n'): | |
581 | case L_('\v'): case L_('\f'): case L_('\r'): | |
582 | case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'): | |
583 | case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'): | |
584 | case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'): | |
585 | case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'): | |
586 | case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'): | |
587 | case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'): | |
588 | case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'): | |
589 | case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'): | |
590 | case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'): | |
591 | case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'): | |
592 | case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'): | |
593 | case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'): | |
594 | case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'): | |
595 | case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'): | |
596 | case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'): | |
597 | case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'): | |
598 | case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'): | |
599 | case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'): | |
600 | case L_('~'): | |
601 | /* The C Standard requires these 97 characters (plus '%', `\a') to | |
602 | be in the basic execution character set. None of these | |
603 | characters can start a multibyte sequence, so they need | |
604 | not be analyzed further. Some old compilers object to | |
605 | `\a', so don't bother optimizing for it. */ | |
606 | add (1, *p = *f); | |
607 | continue; | |
608 | ||
609 | default: | |
610 | /* Copy this multibyte sequence until we reach its end, find | |
611 | an error, or come back to the initial shift state. */ | |
612 | { | |
613 | mbstate_t mbstate = mbstate_zero; | |
614 | size_t len = 0; | |
615 | ||
616 | do | |
617 | { | |
618 | size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); | |
619 | ||
620 | if (bytes == 0) | |
621 | break; | |
622 | ||
623 | if (bytes == (size_t) -2) | |
624 | { | |
625 | len += strlen (f + len); | |
626 | break; | |
627 | } | |
628 | ||
629 | if (bytes == (size_t) -1) | |
630 | { | |
631 | len++; | |
632 | break; | |
633 | } | |
634 | ||
635 | len += bytes; | |
636 | } | |
637 | while (! mbsinit (&mbstate)); | |
638 | ||
639 | cpy (len, f); | |
640 | f += len - 1; | |
641 | continue; | |
642 | } | |
643 | } | |
49fb5799 PE |
644 | |
645 | #else /* ! DO_MULTIBYTE */ | |
646 | ||
e50517d9 GM |
647 | /* Either multibyte encodings are not supported, they are |
648 | safe for formats, so any non-'%' byte can be copied through, | |
649 | or this is the wide character version. */ | |
650 | if (*f != L_('%')) | |
651 | { | |
652 | add (1, *p = *f); | |
653 | continue; | |
654 | } | |
49fb5799 PE |
655 | |
656 | #endif /* ! DO_MULTIBYTE */ | |
657 | ||
658 | /* Check for flags that can modify a format. */ | |
49fb5799 | 659 | while (1) |
e50517d9 GM |
660 | { |
661 | switch (*++f) | |
662 | { | |
663 | /* This influences the number formats. */ | |
664 | case L_('_'): | |
665 | case L_('-'): | |
666 | case L_('0'): | |
667 | pad = *f; | |
668 | continue; | |
669 | ||
670 | /* This changes textual output. */ | |
671 | case L_('^'): | |
672 | to_uppcase = 1; | |
673 | continue; | |
674 | case L_('#'): | |
675 | change_case = 1; | |
676 | continue; | |
677 | ||
678 | default: | |
679 | break; | |
680 | } | |
681 | break; | |
682 | } | |
49fb5799 PE |
683 | |
684 | /* As a GNU extension we allow to specify the field width. */ | |
685 | if (ISDIGIT (*f)) | |
e50517d9 GM |
686 | { |
687 | width = 0; | |
688 | do | |
689 | { | |
690 | width *= 10; | |
691 | width += *f - L_('0'); | |
692 | ++f; | |
693 | } | |
694 | while (ISDIGIT (*f)); | |
695 | } | |
49fb5799 PE |
696 | |
697 | /* Check for modifiers. */ | |
698 | switch (*f) | |
e50517d9 GM |
699 | { |
700 | case L_('E'): | |
701 | case L_('O'): | |
702 | modifier = *f++; | |
703 | break; | |
49fb5799 | 704 | |
e50517d9 GM |
705 | default: |
706 | modifier = 0; | |
707 | break; | |
708 | } | |
49fb5799 PE |
709 | |
710 | /* Now do the specified format. */ | |
4b7c78fc UD |
711 | format_char = *f; |
712 | switch (format_char) | |
e50517d9 | 713 | { |
49fb5799 | 714 | #define DO_NUMBER(d, v) \ |
e50517d9 GM |
715 | digits = width == -1 ? d : width; \ |
716 | number_value = v; goto do_number | |
49fb5799 | 717 | #define DO_NUMBER_SPACEPAD(d, v) \ |
e50517d9 GM |
718 | digits = width == -1 ? d : width; \ |
719 | number_value = v; goto do_number_spacepad | |
720 | ||
721 | case L_('%'): | |
722 | if (modifier != 0) | |
723 | goto bad_format; | |
724 | add (1, *p = *f); | |
725 | break; | |
726 | ||
727 | case L_('a'): | |
728 | if (modifier != 0) | |
729 | goto bad_format; | |
730 | if (change_case) | |
731 | { | |
732 | to_uppcase = 1; | |
733 | to_lowcase = 0; | |
734 | } | |
4b7c78fc | 735 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
e50517d9 GM |
736 | cpy (aw_len, a_wkday); |
737 | break; | |
4b7c78fc | 738 | #else |
e50517d9 | 739 | goto underlying_strftime; |
4b7c78fc | 740 | #endif |
49fb5799 | 741 | |
e50517d9 GM |
742 | case 'A': |
743 | if (modifier != 0) | |
744 | goto bad_format; | |
745 | if (change_case) | |
746 | { | |
747 | to_uppcase = 1; | |
748 | to_lowcase = 0; | |
749 | } | |
4b7c78fc | 750 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
e50517d9 GM |
751 | cpy (STRLEN (f_wkday), f_wkday); |
752 | break; | |
4b7c78fc | 753 | #else |
e50517d9 | 754 | goto underlying_strftime; |
4b7c78fc | 755 | #endif |
49fb5799 | 756 | |
e50517d9 GM |
757 | case L_('b'): |
758 | case L_('h'): /* POSIX.2 extension. */ | |
759 | if (change_case) | |
760 | { | |
761 | to_uppcase = 1; | |
762 | to_lowcase = 0; | |
763 | } | |
764 | if (modifier != 0) | |
765 | goto bad_format; | |
4b7c78fc | 766 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
e50517d9 GM |
767 | cpy (am_len, a_month); |
768 | break; | |
4b7c78fc | 769 | #else |
e50517d9 | 770 | goto underlying_strftime; |
4b7c78fc | 771 | #endif |
49fb5799 | 772 | |
e50517d9 GM |
773 | case L_('B'): |
774 | if (modifier != 0) | |
775 | goto bad_format; | |
776 | if (change_case) | |
777 | { | |
778 | to_uppcase = 1; | |
779 | to_lowcase = 0; | |
780 | } | |
4b7c78fc | 781 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
e50517d9 GM |
782 | cpy (STRLEN (f_month), f_month); |
783 | break; | |
4b7c78fc | 784 | #else |
e50517d9 | 785 | goto underlying_strftime; |
4b7c78fc | 786 | #endif |
49fb5799 | 787 | |
e50517d9 GM |
788 | case L_('c'): |
789 | if (modifier == L_('O')) | |
790 | goto bad_format; | |
49fb5799 | 791 | #ifdef _NL_CURRENT |
e50517d9 GM |
792 | if (! (modifier == 'E' |
793 | && (*(subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, | |
794 | NLW(ERA_D_T_FMT))) | |
795 | != '\0'))) | |
796 | subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT)); | |
49fb5799 | 797 | #else |
4b7c78fc | 798 | # if HAVE_STRFTIME |
e50517d9 | 799 | goto underlying_strftime; |
4b7c78fc | 800 | # else |
e50517d9 | 801 | subfmt = L_("%a %b %e %H:%M:%S %Y"); |
4b7c78fc | 802 | # endif |
49fb5799 PE |
803 | #endif |
804 | ||
e50517d9 GM |
805 | subformat: |
806 | { | |
807 | CHAR_T *old_start = p; | |
ea456eb4 AI |
808 | size_t len = my_strftime (NULL, (size_t) -1, subfmt, tp, 0); |
809 | add (len, my_strftime (p, maxsize - i, subfmt, tp, 0)); | |
e50517d9 GM |
810 | |
811 | if (to_uppcase) | |
812 | while (old_start < p) | |
813 | { | |
814 | *old_start = TOUPPER ((UCHAR_T) *old_start); | |
815 | ++old_start; | |
816 | } | |
817 | } | |
818 | break; | |
49fb5799 | 819 | |
4b7c78fc | 820 | #if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY) |
e50517d9 GM |
821 | underlying_strftime: |
822 | { | |
823 | /* The relevant information is available only via the | |
824 | underlying strftime implementation, so use that. */ | |
825 | char ufmt[4]; | |
826 | char *u = ufmt; | |
827 | char ubuf[1024]; /* enough for any single format in practice */ | |
828 | size_t len; | |
829 | /* Make sure we're calling the actual underlying strftime. | |
830 | In some cases, config.h contains something like | |
831 | "#define strftime rpl_strftime". */ | |
832 | # ifdef strftime | |
833 | # undef strftime | |
834 | size_t strftime (); | |
835 | # endif | |
836 | ||
837 | *u++ = '%'; | |
838 | if (modifier != 0) | |
839 | *u++ = modifier; | |
840 | *u++ = format_char; | |
841 | *u = '\0'; | |
842 | len = strftime (ubuf, sizeof ubuf, ufmt, tp); | |
843 | if (len == 0 && ubuf[0] != '\0') | |
844 | return 0; | |
845 | cpy (len, ubuf); | |
846 | } | |
847 | break; | |
4b7c78fc UD |
848 | #endif |
849 | ||
e50517d9 GM |
850 | case L_('C'): /* POSIX.2 extension. */ |
851 | if (modifier == L_('O')) | |
852 | goto bad_format; | |
853 | if (modifier == L_('E')) | |
854 | { | |
4b7c78fc | 855 | #if HAVE_STRUCT_ERA_ENTRY |
e50517d9 GM |
856 | struct era_entry *era = _nl_get_era_entry (tp); |
857 | if (era) | |
858 | { | |
859 | # ifdef COMPILE_WIDE | |
860 | size_t len = __wcslen (era->era_wname); | |
861 | cpy (len, era->era_wname); | |
862 | # else | |
863 | size_t len = strlen (era->era_name); | |
864 | cpy (len, era->era_name); | |
865 | # endif | |
866 | break; | |
867 | } | |
4b7c78fc UD |
868 | #else |
869 | # if HAVE_STRFTIME | |
e50517d9 | 870 | goto underlying_strftime; |
4b7c78fc | 871 | # endif |
49fb5799 | 872 | #endif |
e50517d9 | 873 | } |
4b7c78fc | 874 | |
e50517d9 GM |
875 | { |
876 | int year = tp->tm_year + TM_YEAR_BASE; | |
877 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
878 | } | |
49fb5799 | 879 | |
e50517d9 GM |
880 | case L_('x'): |
881 | if (modifier == L_('O')) | |
882 | goto bad_format; | |
49fb5799 | 883 | #ifdef _NL_CURRENT |
e50517d9 GM |
884 | if (! (modifier == L_('E') |
885 | && (*(subfmt = (CHAR_T *)_NL_CURRENT (LC_TIME, | |
886 | NLW(ERA_D_FMT))) | |
887 | != L_('\0')))) | |
888 | subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT)); | |
889 | goto subformat; | |
4b7c78fc UD |
890 | #else |
891 | # if HAVE_STRFTIME | |
e50517d9 | 892 | goto underlying_strftime; |
4b7c78fc | 893 | # else |
e50517d9 | 894 | /* Fall through. */ |
4b7c78fc UD |
895 | # endif |
896 | #endif | |
e50517d9 GM |
897 | case L_('D'): /* POSIX.2 extension. */ |
898 | if (modifier != 0) | |
899 | goto bad_format; | |
900 | subfmt = L_("%m/%d/%y"); | |
901 | goto subformat; | |
49fb5799 | 902 | |
e50517d9 GM |
903 | case L_('d'): |
904 | if (modifier == L_('E')) | |
905 | goto bad_format; | |
49fb5799 | 906 | |
e50517d9 | 907 | DO_NUMBER (2, tp->tm_mday); |
49fb5799 | 908 | |
e50517d9 GM |
909 | case L_('e'): /* POSIX.2 extension. */ |
910 | if (modifier == L_('E')) | |
911 | goto bad_format; | |
49fb5799 | 912 | |
e50517d9 | 913 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
49fb5799 | 914 | |
e50517d9 GM |
915 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
916 | jump to one of these two labels. */ | |
49fb5799 | 917 | |
e50517d9 GM |
918 | do_number_spacepad: |
919 | /* Force `_' flag unless overwritten by `0' flag. */ | |
920 | if (pad != L_('0')) | |
921 | pad = L_('_'); | |
49fb5799 | 922 | |
e50517d9 GM |
923 | do_number: |
924 | /* Format the number according to the MODIFIER flag. */ | |
49fb5799 | 925 | |
e50517d9 GM |
926 | if (modifier == L_('O') && 0 <= number_value) |
927 | { | |
4b7c78fc | 928 | #ifdef _NL_CURRENT |
e50517d9 GM |
929 | /* Get the locale specific alternate representation of |
930 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
931 | # ifdef COMPILE_WIDE | |
932 | const wchar_t *cp = _nl_get_walt_digit (number_value); | |
933 | # else | |
934 | const char *cp = _nl_get_alt_digit (number_value); | |
935 | # endif | |
936 | ||
937 | if (cp != NULL) | |
938 | { | |
939 | size_t digitlen = STRLEN (cp); | |
940 | if (digitlen != 0) | |
941 | { | |
942 | cpy (digitlen, cp); | |
943 | break; | |
944 | } | |
945 | } | |
4b7c78fc UD |
946 | #else |
947 | # if HAVE_STRFTIME | |
e50517d9 | 948 | goto underlying_strftime; |
4b7c78fc | 949 | # endif |
49fb5799 | 950 | #endif |
e50517d9 GM |
951 | } |
952 | { | |
953 | unsigned int u = number_value; | |
49fb5799 | 954 | |
e50517d9 GM |
955 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
956 | negative_number = number_value < 0; | |
49fb5799 | 957 | |
e50517d9 GM |
958 | if (negative_number) |
959 | u = -u; | |
49fb5799 | 960 | |
e50517d9 GM |
961 | do |
962 | *--bufp = u % 10 + L_('0'); | |
963 | while ((u /= 10) != 0); | |
964 | } | |
49fb5799 | 965 | |
e50517d9 GM |
966 | do_number_sign_and_padding: |
967 | if (negative_number) | |
968 | *--bufp = L_('-'); | |
49fb5799 | 969 | |
e50517d9 GM |
970 | if (pad != L_('-')) |
971 | { | |
972 | int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0])) | |
973 | - bufp); | |
49fb5799 | 974 | |
e50517d9 GM |
975 | if (pad == L_('_')) |
976 | { | |
977 | while (0 < padding--) | |
978 | *--bufp = L_(' '); | |
979 | } | |
980 | else | |
981 | { | |
982 | bufp += negative_number; | |
983 | while (0 < padding--) | |
984 | *--bufp = L_('0'); | |
985 | if (negative_number) | |
986 | *--bufp = L_('-'); | |
987 | } | |
988 | } | |
49fb5799 | 989 | |
e50517d9 GM |
990 | cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp); |
991 | break; | |
49fb5799 | 992 | |
e50517d9 GM |
993 | case L_('F'): |
994 | if (modifier != 0) | |
995 | goto bad_format; | |
996 | subfmt = L_("%Y-%m-%d"); | |
997 | goto subformat; | |
49fb5799 | 998 | |
e50517d9 GM |
999 | case L_('H'): |
1000 | if (modifier == L_('E')) | |
1001 | goto bad_format; | |
49fb5799 | 1002 | |
e50517d9 | 1003 | DO_NUMBER (2, tp->tm_hour); |
49fb5799 | 1004 | |
e50517d9 GM |
1005 | case L_('I'): |
1006 | if (modifier == L_('E')) | |
1007 | goto bad_format; | |
49fb5799 | 1008 | |
e50517d9 | 1009 | DO_NUMBER (2, hour12); |
49fb5799 | 1010 | |
e50517d9 GM |
1011 | case L_('k'): /* GNU extension. */ |
1012 | if (modifier == L_('E')) | |
1013 | goto bad_format; | |
49fb5799 | 1014 | |
e50517d9 | 1015 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); |
49fb5799 | 1016 | |
e50517d9 GM |
1017 | case L_('l'): /* GNU extension. */ |
1018 | if (modifier == L_('E')) | |
1019 | goto bad_format; | |
49fb5799 | 1020 | |
e50517d9 | 1021 | DO_NUMBER_SPACEPAD (2, hour12); |
49fb5799 | 1022 | |
e50517d9 GM |
1023 | case L_('j'): |
1024 | if (modifier == L_('E')) | |
1025 | goto bad_format; | |
49fb5799 | 1026 | |
e50517d9 | 1027 | DO_NUMBER (3, 1 + tp->tm_yday); |
49fb5799 | 1028 | |
e50517d9 GM |
1029 | case L_('M'): |
1030 | if (modifier == L_('E')) | |
1031 | goto bad_format; | |
49fb5799 | 1032 | |
e50517d9 | 1033 | DO_NUMBER (2, tp->tm_min); |
49fb5799 | 1034 | |
e50517d9 GM |
1035 | case L_('m'): |
1036 | if (modifier == L_('E')) | |
1037 | goto bad_format; | |
49fb5799 | 1038 | |
e50517d9 | 1039 | DO_NUMBER (2, tp->tm_mon + 1); |
49fb5799 | 1040 | |
e50517d9 GM |
1041 | case L_('n'): /* POSIX.2 extension. */ |
1042 | add (1, *p = L_('\n')); | |
1043 | break; | |
49fb5799 | 1044 | |
e50517d9 GM |
1045 | case L_('P'): |
1046 | to_lowcase = 1; | |
4b7c78fc | 1047 | #if !defined _NL_CURRENT && HAVE_STRFTIME |
e50517d9 | 1048 | format_char = L_('p'); |
4b7c78fc | 1049 | #endif |
e50517d9 GM |
1050 | /* FALLTHROUGH */ |
1051 | ||
1052 | case L_('p'): | |
1053 | if (change_case) | |
1054 | { | |
1055 | to_uppcase = 0; | |
1056 | to_lowcase = 1; | |
1057 | } | |
4b7c78fc | 1058 | #if defined _NL_CURRENT || !HAVE_STRFTIME |
e50517d9 GM |
1059 | cpy (ap_len, ampm); |
1060 | break; | |
4b7c78fc | 1061 | #else |
e50517d9 | 1062 | goto underlying_strftime; |
4b7c78fc | 1063 | #endif |
49fb5799 | 1064 | |
e50517d9 GM |
1065 | case L_('R'): /* GNU extension. */ |
1066 | subfmt = L_("%H:%M"); | |
1067 | goto subformat; | |
49fb5799 | 1068 | |
e50517d9 | 1069 | case L_('r'): /* POSIX.2 extension. */ |
49fb5799 | 1070 | #ifdef _NL_CURRENT |
e50517d9 GM |
1071 | if (*(subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, |
1072 | NLW(T_FMT_AMPM))) == L_('\0')) | |
49fb5799 | 1073 | #endif |
e50517d9 GM |
1074 | subfmt = L_("%I:%M:%S %p"); |
1075 | goto subformat; | |
49fb5799 | 1076 | |
e50517d9 GM |
1077 | case L_('S'): |
1078 | if (modifier == L_('E')) | |
1079 | goto bad_format; | |
49fb5799 | 1080 | |
e50517d9 | 1081 | DO_NUMBER (2, tp->tm_sec); |
49fb5799 | 1082 | |
e50517d9 GM |
1083 | case L_('s'): /* GNU extension. */ |
1084 | { | |
1085 | struct tm ltm; | |
1086 | time_t t; | |
49fb5799 | 1087 | |
e50517d9 GM |
1088 | ltm = *tp; |
1089 | t = mktime (<m); | |
49fb5799 | 1090 | |
e50517d9 GM |
1091 | /* Generate string value for T using time_t arithmetic; |
1092 | this works even if sizeof (long) < sizeof (time_t). */ | |
49fb5799 | 1093 | |
e50517d9 GM |
1094 | bufp = buf + sizeof (buf) / sizeof (buf[0]); |
1095 | negative_number = t < 0; | |
49fb5799 | 1096 | |
e50517d9 GM |
1097 | do |
1098 | { | |
1099 | int d = t % 10; | |
1100 | t /= 10; | |
49fb5799 | 1101 | |
e50517d9 GM |
1102 | if (negative_number) |
1103 | { | |
1104 | d = -d; | |
49fb5799 | 1105 | |
e50517d9 GM |
1106 | /* Adjust if division truncates to minus infinity. */ |
1107 | if (0 < -1 % 10 && d < 0) | |
1108 | { | |
1109 | t++; | |
1110 | d += 10; | |
1111 | } | |
1112 | } | |
49fb5799 | 1113 | |
e50517d9 GM |
1114 | *--bufp = d + L_('0'); |
1115 | } | |
1116 | while (t != 0); | |
49fb5799 | 1117 | |
e50517d9 GM |
1118 | digits = 1; |
1119 | goto do_number_sign_and_padding; | |
1120 | } | |
49fb5799 | 1121 | |
e50517d9 GM |
1122 | case L_('X'): |
1123 | if (modifier == L_('O')) | |
1124 | goto bad_format; | |
49fb5799 | 1125 | #ifdef _NL_CURRENT |
e50517d9 GM |
1126 | if (! (modifier == L_('E') |
1127 | && (*(subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, | |
1128 | NLW(ERA_T_FMT))) | |
1129 | != L_('\0')))) | |
1130 | subfmt = (CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT)); | |
1131 | goto subformat; | |
4b7c78fc UD |
1132 | #else |
1133 | # if HAVE_STRFTIME | |
e50517d9 | 1134 | goto underlying_strftime; |
4b7c78fc | 1135 | # else |
e50517d9 | 1136 | /* Fall through. */ |
4b7c78fc UD |
1137 | # endif |
1138 | #endif | |
e50517d9 GM |
1139 | case L_('T'): /* POSIX.2 extension. */ |
1140 | subfmt = L_("%H:%M:%S"); | |
1141 | goto subformat; | |
1142 | ||
1143 | case L_('t'): /* POSIX.2 extension. */ | |
1144 | add (1, *p = L_('\t')); | |
1145 | break; | |
1146 | ||
1147 | case L_('u'): /* POSIX.2 extension. */ | |
1148 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
1149 | ||
1150 | case L_('U'): | |
1151 | if (modifier == L_('E')) | |
1152 | goto bad_format; | |
1153 | ||
1154 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); | |
1155 | ||
1156 | case L_('V'): | |
1157 | case L_('g'): /* GNU extension. */ | |
1158 | case L_('G'): /* GNU extension. */ | |
1159 | if (modifier == L_('E')) | |
1160 | goto bad_format; | |
1161 | { | |
1162 | int year = tp->tm_year + TM_YEAR_BASE; | |
1163 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
1164 | ||
1165 | if (days < 0) | |
1166 | { | |
1167 | /* This ISO week belongs to the previous year. */ | |
1168 | year--; | |
1169 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
1170 | tp->tm_wday); | |
1171 | } | |
1172 | else | |
1173 | { | |
1174 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
1175 | tp->tm_wday); | |
1176 | if (0 <= d) | |
1177 | { | |
1178 | /* This ISO week belongs to the next year. */ | |
1179 | year++; | |
1180 | days = d; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | switch (*f) | |
1185 | { | |
1186 | case L_('g'): | |
1187 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
1188 | ||
1189 | case L_('G'): | |
1190 | DO_NUMBER (1, year); | |
1191 | ||
1192 | default: | |
1193 | DO_NUMBER (2, days / 7 + 1); | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | case L_('W'): | |
1198 | if (modifier == L_('E')) | |
1199 | goto bad_format; | |
1200 | ||
1201 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); | |
1202 | ||
1203 | case L_('w'): | |
1204 | if (modifier == L_('E')) | |
1205 | goto bad_format; | |
1206 | ||
1207 | DO_NUMBER (1, tp->tm_wday); | |
1208 | ||
1209 | case L_('Y'): | |
1210 | if (modifier == 'E') | |
1211 | { | |
4b7c78fc | 1212 | #if HAVE_STRUCT_ERA_ENTRY |
e50517d9 GM |
1213 | struct era_entry *era = _nl_get_era_entry (tp); |
1214 | if (era) | |
1215 | { | |
1216 | # ifdef COMPILE_WIDE | |
1217 | subfmt = era->era_wformat; | |
1218 | # else | |
1219 | subfmt = era->era_format; | |
1220 | # endif | |
1221 | goto subformat; | |
1222 | } | |
4b7c78fc UD |
1223 | #else |
1224 | # if HAVE_STRFTIME | |
e50517d9 | 1225 | goto underlying_strftime; |
4b7c78fc | 1226 | # endif |
49fb5799 | 1227 | #endif |
e50517d9 GM |
1228 | } |
1229 | if (modifier == L_('O')) | |
1230 | goto bad_format; | |
1231 | else | |
1232 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
1233 | ||
1234 | case L_('y'): | |
1235 | if (modifier == L_('E')) | |
1236 | { | |
4b7c78fc | 1237 | #if HAVE_STRUCT_ERA_ENTRY |
e50517d9 GM |
1238 | struct era_entry *era = _nl_get_era_entry (tp); |
1239 | if (era) | |
1240 | { | |
1241 | int delta = tp->tm_year - era->start_date[0]; | |
1242 | DO_NUMBER (1, (era->offset | |
1243 | + delta * era->absolute_direction)); | |
1244 | } | |
4b7c78fc UD |
1245 | #else |
1246 | # if HAVE_STRFTIME | |
e50517d9 | 1247 | goto underlying_strftime; |
4b7c78fc | 1248 | # endif |
49fb5799 | 1249 | #endif |
e50517d9 GM |
1250 | } |
1251 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); | |
49fb5799 | 1252 | |
e50517d9 GM |
1253 | case L_('Z'): |
1254 | if (change_case) | |
1255 | { | |
1256 | to_uppcase = 0; | |
1257 | to_lowcase = 1; | |
1258 | } | |
68c45bf0 PE |
1259 | |
1260 | #if HAVE_TZNAME | |
e50517d9 GM |
1261 | /* The tzset() call might have changed the value. */ |
1262 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
1263 | zone = tzname[tp->tm_isdst]; | |
68c45bf0 | 1264 | #endif |
e50517d9 GM |
1265 | if (! zone) |
1266 | zone = ""; /* POSIX.2 requires the empty string here. */ | |
1267 | ||
1268 | #ifdef COMPILE_WIDE | |
1269 | { | |
1270 | /* The zone string is always given in multibyte form. We have | |
1271 | to transform it first. */ | |
1272 | wchar_t *wczone; | |
1273 | size_t len; | |
1274 | widen (zone, wczone, len); | |
1275 | cpy (len, wczone); | |
1276 | } | |
1277 | #else | |
1278 | cpy (strlen (zone), zone); | |
1279 | #endif | |
1280 | break; | |
49fb5799 | 1281 | |
e50517d9 GM |
1282 | case L_('z'): /* GNU extension. */ |
1283 | if (tp->tm_isdst < 0) | |
1284 | break; | |
49fb5799 | 1285 | |
e50517d9 GM |
1286 | { |
1287 | int diff; | |
49fb5799 | 1288 | #if HAVE_TM_GMTOFF |
e50517d9 | 1289 | diff = tp->tm_gmtoff; |
49fb5799 | 1290 | #else |
e50517d9 GM |
1291 | if (ut) |
1292 | diff = 0; | |
1293 | else | |
1294 | { | |
1295 | struct tm gtm; | |
1296 | struct tm ltm; | |
1297 | time_t lt; | |
1298 | ||
1299 | ltm = *tp; | |
1300 | lt = mktime (<m); | |
1301 | ||
1302 | if (lt == (time_t) -1) | |
1303 | { | |
1304 | /* mktime returns -1 for errors, but -1 is also a | |
1305 | valid time_t value. Check whether an error really | |
1306 | occurred. */ | |
1307 | struct tm tm; | |
1308 | ||
1309 | if (! my_strftime_localtime_r (<, &tm) | |
1310 | || ((ltm.tm_sec ^ tm.tm_sec) | |
1311 | | (ltm.tm_min ^ tm.tm_min) | |
1312 | | (ltm.tm_hour ^ tm.tm_hour) | |
1313 | | (ltm.tm_mday ^ tm.tm_mday) | |
1314 | | (ltm.tm_mon ^ tm.tm_mon) | |
1315 | | (ltm.tm_year ^ tm.tm_year))) | |
1316 | break; | |
1317 | } | |
1318 | ||
1319 | if (! my_strftime_gmtime_r (<, >m)) | |
1320 | break; | |
1321 | ||
1322 | diff = tm_diff (<m, >m); | |
1323 | } | |
49fb5799 PE |
1324 | #endif |
1325 | ||
e50517d9 GM |
1326 | if (diff < 0) |
1327 | { | |
1328 | add (1, *p = L_('-')); | |
1329 | diff = -diff; | |
1330 | } | |
1331 | else | |
1332 | add (1, *p = L_('+')); | |
1333 | ||
1334 | diff /= 60; | |
1335 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
1336 | } | |
1337 | ||
1338 | case L_('\0'): /* GNU extension: % at end of format. */ | |
1339 | --f; | |
1340 | /* Fall through. */ | |
1341 | default: | |
1342 | /* Unknown format; output the format, including the '%', | |
1343 | since this is most likely the right thing to do if a | |
1344 | multibyte string has been misparsed. */ | |
1345 | bad_format: | |
1346 | { | |
1347 | int flen; | |
1348 | for (flen = 1; f[1 - flen] != L_('%'); flen++) | |
1349 | continue; | |
1350 | cpy (flen, &f[1 - flen]); | |
1351 | } | |
1352 | break; | |
1353 | } | |
49fb5799 PE |
1354 | } |
1355 | ||
68c45bf0 | 1356 | if (p && maxsize != 0) |
e50517d9 | 1357 | *p = L_('\0'); |
49fb5799 PE |
1358 | return i; |
1359 | } | |
e50517d9 GM |
1360 | |
1361 | ||
1362 | #ifdef emacs | |
1363 | /* For Emacs we have a separate interface which corresponds to the normal | |
1364 | strftime function and does not have the extra information whether the | |
1365 | TP arguments comes from a `gmtime' call or not. */ | |
1366 | size_t | |
1367 | emacs_strftime (s, maxsize, format, tp) | |
1368 | char *s; | |
1369 | size_t maxsize; | |
1370 | const char *format; | |
1371 | const struct tm *tp; | |
1372 | { | |
1373 | return my_strftime (s, maxsize, format, tp, 0); | |
1374 | } | |
1375 | #endif | |
1376 |