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