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8d57beea | 1 | /* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. |
26761c28 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
26761c28 UD |
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. | |
28f540f4 | 8 | |
26761c28 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
28f540f4 | 13 | |
26761c28 UD |
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. */ | |
28f540f4 | 18 | |
0793d348 RM |
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 | |
ec4b0518 | 26 | # define HAVE_MBRLEN 1 |
d68171ed | 27 | # define HAVE_STRUCT_ERA_ENTRY 1 |
f0f1bf85 | 28 | # define HAVE_TM_GMTOFF 1 |
0793d348 | 29 | # define HAVE_TM_ZONE 1 |
68dbb3a6 UD |
30 | # define HAVE_TZNAME 1 |
31 | # define HAVE_TZSET 1 | |
ec4b0518 | 32 | # define MULTIBYTE_IS_FORMAT_SAFE 1 |
0793d348 | 33 | # define STDC_HEADERS 1 |
0793d348 RM |
34 | # include "../locale/localeinfo.h" |
35 | #endif | |
36 | ||
f8b87ef0 | 37 | #include <ctype.h> |
0793d348 | 38 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
75cd5204 RM |
39 | |
40 | #ifdef TIME_WITH_SYS_TIME | |
41 | # include <sys/time.h> | |
42 | # include <time.h> | |
43 | #else | |
44 | # ifdef HAVE_SYS_TIME_H | |
45 | # include <sys/time.h> | |
46 | # else | |
47 | # include <time.h> | |
48 | # endif | |
49 | #endif | |
8a4b65b4 UD |
50 | #if HAVE_TZNAME |
51 | extern char *tzname[]; | |
52 | #endif | |
28f540f4 | 53 | |
ec4b0518 UD |
54 | /* Do multibyte processing if multibytes are supported, unless |
55 | multibyte sequences are safe in formats. Multibyte sequences are | |
56 | safe if they cannot contain byte sequences that look like format | |
57 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
58 | encoding, which is safe for formats, but strftime.c can be used | |
59 | with other C libraries that use unsafe encodings. */ | |
60 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
61 | ||
62 | #if DO_MULTIBYTE | |
63 | # if HAVE_MBRLEN | |
64 | # include <wchar.h> | |
65 | # else | |
66 | /* Simulate mbrlen with mblen as best we can. */ | |
67 | # define mbstate_t int | |
68 | # define mbrlen(s, n, ps) mblen (s, n) | |
69 | # define mbsinit(ps) (*(ps) == 0) | |
70 | # endif | |
71 | static const mbstate_t mbstate_zero; | |
0793d348 RM |
72 | #endif |
73 | ||
74 | #if HAVE_LIMITS_H | |
75 | # include <limits.h> | |
28f540f4 RM |
76 | #endif |
77 | ||
0793d348 RM |
78 | #if STDC_HEADERS |
79 | # include <stddef.h> | |
80 | # include <stdlib.h> | |
81 | # include <string.h> | |
82 | #else | |
ae1025be UD |
83 | # ifndef HAVE_MEMCPY |
84 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) | |
85 | # endif | |
0793d348 RM |
86 | #endif |
87 | ||
88 | #ifndef __P | |
6d52618b UD |
89 | # if defined (__GNUC__) || (defined (__STDC__) && __STDC__) |
90 | # define __P(args) args | |
91 | # else | |
92 | # define __P(args) () | |
93 | # endif /* GCC. */ | |
0793d348 RM |
94 | #endif /* Not __P. */ |
95 | ||
96 | #ifndef PTR | |
6d52618b UD |
97 | # ifdef __STDC__ |
98 | # define PTR void * | |
99 | # else | |
100 | # define PTR char * | |
101 | # endif | |
0793d348 RM |
102 | #endif |
103 | ||
f0f1bf85 | 104 | #ifndef CHAR_BIT |
6d52618b UD |
105 | # define CHAR_BIT 8 |
106 | #endif | |
107 | ||
108 | #ifndef NULL | |
109 | # define NULL 0 | |
f0f1bf85 UD |
110 | #endif |
111 | ||
112 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
113 | ||
114 | /* Bound on length of the string representing an integer value of type t. | |
115 | Subtract one for the sign bit if t is signed; | |
116 | 302 / 1000 is log10 (2) rounded up; | |
117 | add one for integer division truncation; | |
118 | add one more for a minus sign if t is signed. */ | |
119 | #define INT_STRLEN_BOUND(t) \ | |
120 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 100 + 1 + TYPE_SIGNED (t)) | |
121 | ||
122 | #define TM_YEAR_BASE 1900 | |
123 | ||
ec4b0518 UD |
124 | #ifndef __isleap |
125 | /* Nonzero if YEAR is a leap year (every 4 years, | |
126 | except every 100th isn't, and every 400th is). */ | |
6d52618b | 127 | # define __isleap(year) \ |
ec4b0518 UD |
128 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
129 | #endif | |
130 | ||
2de99474 | 131 | |
fafaa44e UD |
132 | #ifdef _LIBC |
133 | # define gmtime_r __gmtime_r | |
134 | # define localtime_r __localtime_r | |
68dbb3a6 | 135 | extern int __tz_compute __P ((time_t timer, const struct tm *tm)); |
10dc2a90 UD |
136 | # define tzname __tzname |
137 | # define tzset __tzset | |
fafaa44e UD |
138 | #else |
139 | # if ! HAVE_LOCALTIME_R | |
140 | # if ! HAVE_TM_GMTOFF | |
141 | /* Approximate gmtime_r as best we can in its absence. */ | |
76b87c03 | 142 | # define gmtime_r my_gmtime_r |
fafaa44e UD |
143 | static struct tm *gmtime_r __P ((const time_t *, struct tm *)); |
144 | static struct tm * | |
145 | gmtime_r (t, tp) | |
146 | const time_t *t; | |
147 | struct tm *tp; | |
148 | { | |
149 | struct tm *l = gmtime (t); | |
150 | if (! l) | |
151 | return 0; | |
152 | *tp = *l; | |
153 | return tp; | |
154 | } | |
155 | # endif /* ! HAVE_TM_GMTOFF */ | |
156 | ||
157 | /* Approximate localtime_r as best we can in its absence. */ | |
9c2322bc | 158 | # define localtime_r my_ftime_localtime_r |
fafaa44e UD |
159 | static struct tm *localtime_r __P ((const time_t *, struct tm *)); |
160 | static struct tm * | |
161 | localtime_r (t, tp) | |
162 | const time_t *t; | |
163 | struct tm *tp; | |
164 | { | |
165 | struct tm *l = localtime (t); | |
166 | if (! l) | |
167 | return 0; | |
168 | *tp = *l; | |
169 | return tp; | |
170 | } | |
171 | # endif /* ! HAVE_LOCALTIME_R */ | |
172 | #endif /* ! defined (_LIBC) */ | |
173 | ||
174 | ||
68dbb3a6 UD |
175 | #if !defined (memset) && !defined (HAVE_MEMSET) && !defined (_LIBC) |
176 | /* Some systems lack the `memset' function and we don't want to | |
177 | introduce additional dependencies. */ | |
f8b87ef0 | 178 | static const char spaces[16] = " "; |
779ae82e | 179 | static const char zeroes[16] = "0000000000000000"; |
68dbb3a6 UD |
180 | |
181 | # define memset_space(P, Len) \ | |
182 | do { \ | |
183 | int _len = (Len); \ | |
63551311 | 184 | \ |
68dbb3a6 UD |
185 | do \ |
186 | { \ | |
187 | int _this = _len > 16 ? 16 : _len; \ | |
188 | memcpy ((P), spaces, _this); \ | |
189 | (P) += _this; \ | |
190 | _len -= _this; \ | |
191 | } \ | |
192 | while (_len > 0); \ | |
193 | } while (0) | |
779ae82e UD |
194 | |
195 | # define memset_zero(P, Len) \ | |
196 | do { \ | |
197 | int _len = (Len); \ | |
198 | \ | |
199 | do \ | |
200 | { \ | |
201 | int _this = _len > 16 ? 16 : _len; \ | |
202 | memcpy ((P), zeroes, _this); \ | |
203 | (P) += _this; \ | |
204 | _len -= _this; \ | |
205 | } \ | |
206 | while (_len > 0); \ | |
207 | } while (0) | |
68dbb3a6 | 208 | #else |
63551311 | 209 | # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len)) |
779ae82e | 210 | # define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len)) |
68dbb3a6 UD |
211 | #endif |
212 | ||
76b87c03 | 213 | #define add(n, f) \ |
28f540f4 RM |
214 | do \ |
215 | { \ | |
f8b87ef0 UD |
216 | int _n = (n); \ |
217 | int _delta = width - _n; \ | |
6d52618b UD |
218 | int _incr = _n + (_delta > 0 ? _delta : 0); \ |
219 | if (i + _incr >= maxsize) \ | |
28f540f4 | 220 | return 0; \ |
6d52618b UD |
221 | if (p) \ |
222 | { \ | |
223 | if (_delta > 0) \ | |
779ae82e UD |
224 | { \ |
225 | if (pad == '0') \ | |
226 | memset_zero (p, _delta); \ | |
227 | else \ | |
228 | memset_space (p, _delta); \ | |
229 | } \ | |
6d52618b UD |
230 | f; \ |
231 | p += _n; \ | |
232 | } \ | |
233 | i += _incr; \ | |
28f540f4 | 234 | } while (0) |
f8b87ef0 | 235 | |
76b87c03 | 236 | #define cpy(n, s) \ |
f8b87ef0 UD |
237 | add ((n), \ |
238 | if (to_lowcase) \ | |
239 | memcpy_lowcase (p, (s), _n); \ | |
6d52618b UD |
240 | else if (to_uppcase) \ |
241 | memcpy_uppcase (p, (s), _n); \ | |
f8b87ef0 UD |
242 | else \ |
243 | memcpy ((PTR) p, (PTR) (s), _n)) | |
244 | ||
245 | ||
246 | ||
247 | #ifdef _LIBC | |
248 | # define TOUPPER(Ch) toupper (Ch) | |
249 | # define TOLOWER(Ch) tolower (Ch) | |
250 | #else | |
251 | # define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch)) | |
252 | # define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
253 | #endif | |
7e3be507 UD |
254 | /* We don't use `isdigit' here since the locale dependent |
255 | interpretation is not what we want here. We only need to accept | |
256 | the arabic digits in the ASCII range. One day there is perhaps a | |
257 | more reliable way to accept other sets of digits. */ | |
258 | #define ISDIGIT(Ch) ((unsigned int) (Ch) - '0' <= 9) | |
f8b87ef0 UD |
259 | |
260 | static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len)); | |
261 | ||
262 | static char * | |
263 | memcpy_lowcase (dest, src, len) | |
264 | char *dest; | |
265 | const char *src; | |
266 | size_t len; | |
267 | { | |
268 | while (len-- > 0) | |
269 | dest[len] = TOLOWER (src[len]); | |
270 | return dest; | |
271 | } | |
0793d348 | 272 | |
6d52618b UD |
273 | static char *memcpy_uppcase __P ((char *dest, const char *src, size_t len)); |
274 | ||
275 | static char * | |
276 | memcpy_uppcase (dest, src, len) | |
277 | char *dest; | |
278 | const char *src; | |
279 | size_t len; | |
280 | { | |
281 | while (len-- > 0) | |
282 | dest[len] = TOUPPER (src[len]); | |
283 | return dest; | |
284 | } | |
285 | ||
cf29ffbe | 286 | |
f0f1bf85 UD |
287 | #if ! HAVE_TM_GMTOFF |
288 | /* Yield the difference between *A and *B, | |
289 | measured in seconds, ignoring leap seconds. */ | |
9c2322bc | 290 | # define tm_diff ftime_tm_diff |
f0f1bf85 UD |
291 | static int tm_diff __P ((const struct tm *, const struct tm *)); |
292 | static int | |
293 | tm_diff (a, b) | |
294 | const struct tm *a; | |
295 | const struct tm *b; | |
296 | { | |
ec4b0518 UD |
297 | /* Compute intervening leap days correctly even if year is negative. |
298 | Take care to avoid int overflow in leap day calculations, | |
299 | but it's OK to assume that A and B are close to each other. */ | |
300 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
301 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
302 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
303 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
304 | int a400 = a100 >> 2; | |
305 | int b400 = b100 >> 2; | |
306 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
307 | int years = a->tm_year - b->tm_year; | |
f0f1bf85 UD |
308 | int days = (365 * years + intervening_leap_days |
309 | + (a->tm_yday - b->tm_yday)); | |
310 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
311 | + (a->tm_min - b->tm_min)) | |
312 | + (a->tm_sec - b->tm_sec)); | |
313 | } | |
314 | #endif /* ! HAVE_TM_GMTOFF */ | |
28f540f4 | 315 | |
b7459e56 RM |
316 | |
317 | ||
ec4b0518 UD |
318 | /* The number of days from the first day of the first ISO week of this |
319 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
320 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
321 | be as small as YDAY_MINIMUM. */ | |
322 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
323 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
324 | #define YDAY_MINIMUM (-366) | |
325 | static int iso_week_days __P ((int, int)); | |
326 | #ifdef __GNUC__ | |
28f540f4 RM |
327 | inline |
328 | #endif | |
ec4b0518 UD |
329 | static int |
330 | iso_week_days (yday, wday) | |
331 | int yday; | |
332 | int wday; | |
28f540f4 | 333 | { |
ec4b0518 UD |
334 | /* Add enough to the first operand of % to make it nonnegative. */ |
335 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
336 | return (yday | |
337 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 | |
338 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
28f540f4 RM |
339 | } |
340 | ||
ec4b0518 | 341 | |
0793d348 RM |
342 | #ifndef _NL_CURRENT |
343 | static char const weekday_name[][10] = | |
344 | { | |
345 | "Sunday", "Monday", "Tuesday", "Wednesday", | |
346 | "Thursday", "Friday", "Saturday" | |
347 | }; | |
348 | static char const month_name[][10] = | |
349 | { | |
350 | "January", "February", "March", "April", "May", "June", | |
351 | "July", "August", "September", "October", "November", "December" | |
352 | }; | |
353 | #endif | |
28f540f4 | 354 | |
8d57beea UD |
355 | |
356 | #if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET | |
357 | /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime. | |
358 | Work around this bug by copying *tp before it might be munged. */ | |
359 | size_t _strftime_copytm __P ((char *, size_t, const char *, | |
360 | const struct tm *)); | |
361 | size_t | |
362 | strftime (s, maxsize, format, tp) | |
363 | char *s; | |
364 | size_t maxsize; | |
365 | const char *format; | |
366 | const struct tm *tp; | |
367 | { | |
368 | struct tm tmcopy; | |
369 | tmcopy = *tp; | |
370 | return _strftime_copytm (s, maxsize, format, &tmcopy); | |
371 | } | |
372 | # ifdef strftime | |
373 | # undef strftime | |
374 | # endif | |
375 | # define strftime(S, Maxsize, Format, Tp) \ | |
c0e45674 | 376 | _strftime_copytm (S, Maxsize, Format, Tp) |
8d57beea UD |
377 | #endif |
378 | ||
379 | ||
28f540f4 RM |
380 | /* Write information from TP into S according to the format |
381 | string FORMAT, writing no more that MAXSIZE characters | |
382 | (including the terminating '\0') and returning number of | |
383 | characters written. If S is NULL, nothing will be written | |
384 | anywhere, so to determine how many characters would be | |
385 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
386 | size_t | |
0793d348 RM |
387 | strftime (s, maxsize, format, tp) |
388 | char *s; | |
389 | size_t maxsize; | |
390 | const char *format; | |
f8b87ef0 | 391 | const struct tm *tp; |
28f540f4 | 392 | { |
0793d348 RM |
393 | int hour12 = tp->tm_hour; |
394 | #ifdef _NL_CURRENT | |
395 | const char *const a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday); | |
396 | const char *const f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday); | |
397 | const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon); | |
398 | const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon); | |
399 | const char *const ampm = _NL_CURRENT (LC_TIME, | |
b20e47cb | 400 | hour12 > 11 ? PM_STR : AM_STR); |
d68171ed UD |
401 | size_t aw_len = strlen (a_wkday); |
402 | size_t am_len = strlen (a_month); | |
0793d348 RM |
403 | size_t ap_len = strlen (ampm); |
404 | #else | |
405 | const char *const f_wkday = weekday_name[tp->tm_wday]; | |
406 | const char *const f_month = month_name[tp->tm_mon]; | |
407 | const char *const a_wkday = f_wkday; | |
408 | const char *const a_month = f_month; | |
b20e47cb | 409 | const char *const ampm = "AMPM" + 2 * (hour12 > 11); |
0793d348 RM |
410 | size_t aw_len = 3; |
411 | size_t am_len = 3; | |
412 | size_t ap_len = 2; | |
413 | #endif | |
2de99474 UD |
414 | size_t wkday_len = strlen (f_wkday); |
415 | size_t month_len = strlen (f_month); | |
0793d348 | 416 | const char *zone; |
28f540f4 | 417 | size_t zonelen; |
f8b87ef0 UD |
418 | size_t i = 0; |
419 | char *p = s; | |
420 | const char *f; | |
28f540f4 | 421 | |
68dbb3a6 UD |
422 | zone = NULL; |
423 | #if !defined _LIBC && HAVE_TM_ZONE | |
424 | /* XXX We have some problems here. First, the string pointed to by | |
425 | tm_zone is dynamically allocated while loading the zone data. But | |
426 | when another zone is loaded since the information in TP were | |
427 | computed this would be a stale pointer. | |
428 | The second problem is the POSIX test suite which assumes setting | |
429 | the environment variable TZ to a new value before calling strftime() | |
430 | will influence the result (the %Z format) even if the information in | |
431 | TP is computed with a totally different time zone. --drepper@gnu */ | |
0793d348 RM |
432 | zone = (const char *) tp->tm_zone; |
433 | #endif | |
434 | #if HAVE_TZNAME | |
68dbb3a6 UD |
435 | /* POSIX.1 8.1.1 requires that whenever strftime() is called, the |
436 | time zone names contained in the external variable `tzname' shall | |
437 | be set as if the tzset() function had been called. */ | |
438 | # if HAVE_TZSET | |
439 | tzset (); | |
440 | # endif | |
441 | ||
0793d348 RM |
442 | if (!(zone && *zone) && tp->tm_isdst >= 0) |
443 | zone = tzname[tp->tm_isdst]; | |
444 | #endif | |
ec4b0518 UD |
445 | if (! zone) |
446 | zone = ""; /* POSIX.2 requires the empty string here. */ | |
0793d348 RM |
447 | |
448 | zonelen = strlen (zone); | |
28f540f4 RM |
449 | |
450 | if (hour12 > 12) | |
451 | hour12 -= 12; | |
452 | else | |
453 | if (hour12 == 0) hour12 = 12; | |
454 | ||
455 | for (f = format; *f != '\0'; ++f) | |
456 | { | |
ec4b0518 UD |
457 | int pad; /* Padding for number ('-', '_', or 0). */ |
458 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
459 | int digits; /* Max digits for numeric format. */ | |
460 | int number_value; /* Numeric value to be printed. */ | |
f0f1bf85 | 461 | int negative_number; /* 1 if the number is negative. */ |
ec4b0518 | 462 | const char *subfmt; |
f0f1bf85 UD |
463 | char *bufp; |
464 | char buf[1 + (sizeof (int) < sizeof (time_t) | |
465 | ? INT_STRLEN_BOUND (time_t) | |
466 | : INT_STRLEN_BOUND (int))]; | |
f8b87ef0 UD |
467 | int width = -1; |
468 | int to_lowcase = 0; | |
6d52618b | 469 | int to_uppcase = 0; |
cf29ffbe | 470 | int change_case = 0; |
28f540f4 | 471 | |
ec4b0518 UD |
472 | #if DO_MULTIBYTE |
473 | ||
474 | switch (*f) | |
28f540f4 | 475 | { |
ec4b0518 UD |
476 | case '%': |
477 | break; | |
478 | ||
479 | case '\a': case '\b': case '\t': case '\n': | |
480 | case '\v': case '\f': case '\r': | |
481 | case ' ': case '!': case '"': case '#': case '&': case'\'': | |
482 | case '(': case ')': case '*': case '+': case ',': case '-': | |
483 | case '.': case '/': case '0': case '1': case '2': case '3': | |
484 | case '4': case '5': case '6': case '7': case '8': case '9': | |
485 | case ':': case ';': case '<': case '=': case '>': case '?': | |
486 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
487 | case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
488 | case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
489 | case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
490 | case 'Y': case 'Z': case '[': case'\\': case ']': case '^': | |
491 | case '_': case 'a': case 'b': case 'c': case 'd': case 'e': | |
492 | case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': | |
493 | case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': | |
494 | case 'r': case 's': case 't': case 'u': case 'v': case 'w': | |
495 | case 'x': case 'y': case 'z': case '{': case '|': case '}': | |
496 | case '~': | |
497 | /* The C Standard requires these 98 characters (plus '%') to | |
498 | be in the basic execution character set. None of these | |
499 | characters can start a multibyte sequence, so they need | |
500 | not be analyzed further. */ | |
501 | add (1, *p = *f); | |
502 | continue; | |
503 | ||
504 | default: | |
505 | /* Copy this multibyte sequence until we reach its end, find | |
506 | an error, or come back to the initial shift state. */ | |
507 | { | |
508 | mbstate_t mbstate = mbstate_zero; | |
509 | size_t len = 0; | |
510 | ||
511 | do | |
512 | { | |
513 | size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); | |
514 | ||
515 | if (bytes == 0) | |
516 | break; | |
517 | ||
518 | if (bytes == (size_t) -2 || bytes == (size_t) -1) | |
519 | { | |
520 | len++; | |
521 | break; | |
522 | } | |
523 | ||
524 | len += bytes; | |
525 | } | |
526 | while (! mbsinit (&mbstate)); | |
527 | ||
528 | cpy (len, f); | |
529 | continue; | |
530 | } | |
28f540f4 RM |
531 | } |
532 | ||
ec4b0518 UD |
533 | #else /* ! DO_MULTIBYTE */ |
534 | ||
535 | /* Either multibyte encodings are not supported, or they are | |
536 | safe for formats, so any non-'%' byte can be copied through. */ | |
28f540f4 RM |
537 | if (*f != '%') |
538 | { | |
2de99474 | 539 | add (1, *p = *f); |
28f540f4 RM |
540 | continue; |
541 | } | |
542 | ||
ec4b0518 UD |
543 | #endif /* ! DO_MULTIBYTE */ |
544 | ||
7e3be507 | 545 | /* Check for flags that can modify a format. */ |
01c901a5 | 546 | pad = 0; |
f8b87ef0 | 547 | while (1) |
b7459e56 | 548 | { |
6d52618b | 549 | switch (*++f) |
f8b87ef0 | 550 | { |
7e3be507 | 551 | /* This influences the number formats. */ |
f8b87ef0 UD |
552 | case '_': |
553 | case '-': | |
554 | case '0': | |
6d52618b UD |
555 | pad = *f; |
556 | continue; | |
557 | ||
7e3be507 | 558 | /* This changes textual output. */ |
6d52618b UD |
559 | case '^': |
560 | to_uppcase = 1; | |
561 | continue; | |
cf29ffbe UD |
562 | case '#': |
563 | change_case = 1; | |
564 | continue; | |
f8b87ef0 UD |
565 | |
566 | default: | |
f8b87ef0 UD |
567 | break; |
568 | } | |
b7459e56 | 569 | break; |
f8b87ef0 | 570 | } |
ec4b0518 | 571 | |
f8b87ef0 | 572 | /* As a GNU extension we allow to specify the field width. */ |
7e3be507 | 573 | if (ISDIGIT (*f)) |
f8b87ef0 UD |
574 | { |
575 | width = 0; | |
576 | do | |
577 | { | |
578 | width *= 10; | |
579 | width += *f - '0'; | |
7e3be507 | 580 | ++f; |
f8b87ef0 | 581 | } |
7e3be507 | 582 | while (ISDIGIT (*f)); |
b7459e56 RM |
583 | } |
584 | ||
f0f1bf85 UD |
585 | /* Check for modifiers. */ |
586 | switch (*f) | |
587 | { | |
588 | case 'E': | |
f0f1bf85 | 589 | case 'O': |
ec4b0518 | 590 | modifier = *f++; |
f0f1bf85 | 591 | break; |
ec4b0518 | 592 | |
f0f1bf85 | 593 | default: |
ec4b0518 | 594 | modifier = 0; |
f0f1bf85 UD |
595 | break; |
596 | } | |
597 | ||
b7459e56 | 598 | /* Now do the specified format. */ |
28f540f4 RM |
599 | switch (*f) |
600 | { | |
f0f1bf85 | 601 | #define DO_NUMBER(d, v) \ |
cf29ffbe UD |
602 | digits = width == -1 ? d : width; \ |
603 | number_value = v; goto do_number | |
f0f1bf85 | 604 | #define DO_NUMBER_SPACEPAD(d, v) \ |
cf29ffbe UD |
605 | digits = width == -1 ? d : width; \ |
606 | number_value = v; goto do_number_spacepad | |
f0f1bf85 | 607 | |
28f540f4 | 608 | case '%': |
ec4b0518 | 609 | if (modifier != 0) |
f0f1bf85 | 610 | goto bad_format; |
2de99474 | 611 | add (1, *p = *f); |
28f540f4 RM |
612 | break; |
613 | ||
614 | case 'a': | |
ec4b0518 | 615 | if (modifier != 0) |
f0f1bf85 | 616 | goto bad_format; |
cf29ffbe UD |
617 | if (change_case) |
618 | { | |
619 | to_uppcase = 1; | |
620 | to_lowcase = 0; | |
621 | } | |
2de99474 | 622 | cpy (aw_len, a_wkday); |
28f540f4 RM |
623 | break; |
624 | ||
625 | case 'A': | |
ec4b0518 | 626 | if (modifier != 0) |
f0f1bf85 | 627 | goto bad_format; |
cf29ffbe UD |
628 | if (change_case) |
629 | { | |
630 | to_uppcase = 1; | |
631 | to_lowcase = 0; | |
632 | } | |
2de99474 | 633 | cpy (wkday_len, f_wkday); |
28f540f4 RM |
634 | break; |
635 | ||
636 | case 'b': | |
ec4b0518 UD |
637 | case 'h': /* POSIX.2 extension. */ |
638 | if (modifier != 0) | |
f0f1bf85 | 639 | goto bad_format; |
2de99474 | 640 | cpy (am_len, a_month); |
28f540f4 RM |
641 | break; |
642 | ||
643 | case 'B': | |
ec4b0518 | 644 | if (modifier != 0) |
f0f1bf85 | 645 | goto bad_format; |
cf29ffbe UD |
646 | if (change_case) |
647 | { | |
648 | to_uppcase = 1; | |
649 | to_lowcase = 0; | |
650 | } | |
2de99474 | 651 | cpy (month_len, f_month); |
28f540f4 RM |
652 | break; |
653 | ||
654 | case 'c': | |
ec4b0518 | 655 | if (modifier == 'O') |
f0f1bf85 | 656 | goto bad_format; |
0793d348 | 657 | #ifdef _NL_CURRENT |
ec4b0518 UD |
658 | if (! (modifier == 'E' |
659 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0')) | |
f0f1bf85 | 660 | subfmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
0793d348 | 661 | #else |
f65fd747 | 662 | subfmt = "%a %b %e %H:%M:%S %Y"; |
0793d348 | 663 | #endif |
f0f1bf85 | 664 | |
28f540f4 RM |
665 | subformat: |
666 | { | |
6d52618b | 667 | char *old_start = p; |
f8b87ef0 | 668 | size_t len = strftime (NULL, maxsize - i, subfmt, tp); |
0793d348 RM |
669 | if (len == 0 && *subfmt) |
670 | return 0; | |
f8b87ef0 | 671 | add (len, strftime (p, maxsize - i, subfmt, tp)); |
6d52618b UD |
672 | |
673 | if (to_uppcase) | |
674 | while (old_start < p) | |
675 | { | |
676 | *old_start = TOUPPER (*old_start); | |
677 | ++old_start; | |
678 | } | |
28f540f4 RM |
679 | } |
680 | break; | |
681 | ||
ec4b0518 UD |
682 | case 'C': /* POSIX.2 extension. */ |
683 | if (modifier == 'O') | |
f0f1bf85 | 684 | goto bad_format; |
d68171ed UD |
685 | #if HAVE_STRUCT_ERA_ENTRY |
686 | if (modifier == 'E') | |
687 | { | |
688 | struct era_entry *era = _nl_get_era_entry (tp); | |
689 | if (era) | |
690 | { | |
691 | size_t len = strlen (era->name_fmt); | |
692 | cpy (len, era->name_fmt); | |
693 | break; | |
694 | } | |
695 | } | |
f0f1bf85 | 696 | #endif |
ec4b0518 UD |
697 | { |
698 | int year = tp->tm_year + TM_YEAR_BASE; | |
699 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
700 | } | |
28f540f4 | 701 | |
0793d348 | 702 | case 'x': |
ec4b0518 | 703 | if (modifier == 'O') |
f0f1bf85 | 704 | goto bad_format; |
0793d348 | 705 | #ifdef _NL_CURRENT |
ec4b0518 UD |
706 | if (! (modifier == 'E' |
707 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0')) | |
f0f1bf85 | 708 | subfmt = _NL_CURRENT (LC_TIME, D_FMT); |
0793d348 RM |
709 | goto subformat; |
710 | #endif | |
711 | /* Fall through. */ | |
ec4b0518 UD |
712 | case 'D': /* POSIX.2 extension. */ |
713 | if (modifier != 0) | |
714 | goto bad_format; | |
28f540f4 RM |
715 | subfmt = "%m/%d/%y"; |
716 | goto subformat; | |
717 | ||
718 | case 'd': | |
ec4b0518 | 719 | if (modifier == 'E') |
f0f1bf85 UD |
720 | goto bad_format; |
721 | ||
b7459e56 | 722 | DO_NUMBER (2, tp->tm_mday); |
28f540f4 | 723 | |
ec4b0518 UD |
724 | case 'e': /* POSIX.2 extension. */ |
725 | if (modifier == 'E') | |
f0f1bf85 UD |
726 | goto bad_format; |
727 | ||
2064087b | 728 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
b7459e56 | 729 | |
f0f1bf85 | 730 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
b7459e56 RM |
731 | jump to one of these two labels. */ |
732 | ||
2064087b | 733 | do_number_spacepad: |
f8b87ef0 UD |
734 | /* Force `_' flag unless overwritten by `0' flag. */ |
735 | if (pad != '0') | |
736 | pad = '_'; | |
b7459e56 RM |
737 | |
738 | do_number: | |
f0f1bf85 UD |
739 | /* Format the number according to the MODIFIER flag. */ |
740 | ||
741 | #ifdef _NL_CURRENT | |
ec4b0518 | 742 | if (modifier == 'O' && 0 <= number_value) |
f0f1bf85 | 743 | { |
c4029823 UD |
744 | /* Get the locale specific alternate representation of |
745 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
746 | const char *cp = _nl_get_alt_digit (number_value); | |
ec4b0518 | 747 | |
c4029823 | 748 | if (cp != NULL) |
ec4b0518 UD |
749 | { |
750 | size_t digitlen = strlen (cp); | |
751 | if (digitlen != 0) | |
752 | { | |
753 | cpy (digitlen, cp); | |
754 | break; | |
755 | } | |
756 | } | |
f0f1bf85 UD |
757 | } |
758 | #endif | |
b7459e56 | 759 | { |
f0f1bf85 | 760 | unsigned int u = number_value; |
b7459e56 | 761 | |
f0f1bf85 UD |
762 | bufp = buf + sizeof (buf); |
763 | negative_number = number_value < 0; | |
b7459e56 | 764 | |
f0f1bf85 UD |
765 | if (negative_number) |
766 | u = -u; | |
b7459e56 | 767 | |
f0f1bf85 UD |
768 | do |
769 | *--bufp = u % 10 + '0'; | |
770 | while ((u /= 10) != 0); | |
771 | } | |
b7459e56 | 772 | |
f0f1bf85 UD |
773 | do_number_sign_and_padding: |
774 | if (negative_number) | |
775 | *--bufp = '-'; | |
776 | ||
ec4b0518 | 777 | if (pad != '-') |
f0f1bf85 UD |
778 | { |
779 | int padding = digits - (buf + sizeof (buf) - bufp); | |
780 | ||
ec4b0518 | 781 | if (pad == '_') |
f0f1bf85 UD |
782 | { |
783 | while (0 < padding--) | |
784 | *--bufp = ' '; | |
785 | } | |
786 | else | |
787 | { | |
788 | bufp += negative_number; | |
789 | while (0 < padding--) | |
790 | *--bufp = '0'; | |
791 | if (negative_number) | |
792 | *--bufp = '-'; | |
793 | } | |
794 | } | |
795 | ||
796 | cpy (buf + sizeof (buf) - bufp, bufp); | |
f0f1bf85 | 797 | break; |
b7459e56 | 798 | |
28f540f4 RM |
799 | |
800 | case 'H': | |
ec4b0518 | 801 | if (modifier == 'E') |
f0f1bf85 UD |
802 | goto bad_format; |
803 | ||
b7459e56 | 804 | DO_NUMBER (2, tp->tm_hour); |
28f540f4 RM |
805 | |
806 | case 'I': | |
ec4b0518 | 807 | if (modifier == 'E') |
f0f1bf85 UD |
808 | goto bad_format; |
809 | ||
b7459e56 | 810 | DO_NUMBER (2, hour12); |
28f540f4 RM |
811 | |
812 | case 'k': /* GNU extension. */ | |
ec4b0518 | 813 | if (modifier == 'E') |
f0f1bf85 UD |
814 | goto bad_format; |
815 | ||
2064087b | 816 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); |
28f540f4 RM |
817 | |
818 | case 'l': /* GNU extension. */ | |
ec4b0518 | 819 | if (modifier == 'E') |
f0f1bf85 UD |
820 | goto bad_format; |
821 | ||
2064087b | 822 | DO_NUMBER_SPACEPAD (2, hour12); |
28f540f4 RM |
823 | |
824 | case 'j': | |
ec4b0518 | 825 | if (modifier == 'E') |
f0f1bf85 UD |
826 | goto bad_format; |
827 | ||
b7459e56 | 828 | DO_NUMBER (3, 1 + tp->tm_yday); |
28f540f4 RM |
829 | |
830 | case 'M': | |
ec4b0518 | 831 | if (modifier == 'E') |
f0f1bf85 UD |
832 | goto bad_format; |
833 | ||
b7459e56 | 834 | DO_NUMBER (2, tp->tm_min); |
28f540f4 RM |
835 | |
836 | case 'm': | |
ec4b0518 | 837 | if (modifier == 'E') |
f0f1bf85 UD |
838 | goto bad_format; |
839 | ||
b7459e56 | 840 | DO_NUMBER (2, tp->tm_mon + 1); |
28f540f4 | 841 | |
ec4b0518 | 842 | case 'n': /* POSIX.2 extension. */ |
28f540f4 RM |
843 | add (1, *p = '\n'); |
844 | break; | |
845 | ||
f8b87ef0 UD |
846 | case 'P': |
847 | to_lowcase = 1; | |
848 | /* FALLTHROUGH */ | |
849 | ||
28f540f4 | 850 | case 'p': |
cf29ffbe UD |
851 | if (change_case) |
852 | { | |
853 | to_uppcase = 0; | |
854 | to_lowcase = 1; | |
855 | } | |
2de99474 | 856 | cpy (ap_len, ampm); |
28f540f4 RM |
857 | break; |
858 | ||
859 | case 'R': /* GNU extension. */ | |
860 | subfmt = "%H:%M"; | |
861 | goto subformat; | |
862 | ||
ec4b0518 UD |
863 | case 'r': /* POSIX.2 extension. */ |
864 | #ifdef _NL_CURRENT | |
865 | if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0') | |
866 | #endif | |
867 | subfmt = "%I:%M:%S %p"; | |
28f540f4 RM |
868 | goto subformat; |
869 | ||
870 | case 'S': | |
ec4b0518 UD |
871 | if (modifier == 'E') |
872 | goto bad_format; | |
f0f1bf85 | 873 | |
b7459e56 | 874 | DO_NUMBER (2, tp->tm_sec); |
28f540f4 | 875 | |
2de99474 | 876 | case 's': /* GNU extension. */ |
f0f1bf85 | 877 | { |
b33f91e9 UD |
878 | struct tm ltm; |
879 | time_t t; | |
880 | ||
881 | ltm = *tp; | |
882 | t = mktime (<m); | |
f0f1bf85 UD |
883 | |
884 | /* Generate string value for T using time_t arithmetic; | |
885 | this works even if sizeof (long) < sizeof (time_t). */ | |
886 | ||
887 | bufp = buf + sizeof (buf); | |
888 | negative_number = t < 0; | |
889 | ||
890 | do | |
891 | { | |
892 | int d = t % 10; | |
893 | t /= 10; | |
894 | ||
895 | if (negative_number) | |
896 | { | |
897 | d = -d; | |
898 | ||
899 | /* Adjust if division truncates to minus infinity. */ | |
900 | if (0 < -1 % 10 && d < 0) | |
901 | { | |
902 | t++; | |
903 | d += 10; | |
904 | } | |
905 | } | |
906 | ||
907 | *--bufp = d + '0'; | |
908 | } | |
909 | while (t != 0); | |
910 | ||
911 | digits = 1; | |
912 | goto do_number_sign_and_padding; | |
2de99474 | 913 | } |
2de99474 | 914 | |
0793d348 | 915 | case 'X': |
ec4b0518 | 916 | if (modifier == 'O') |
f0f1bf85 | 917 | goto bad_format; |
0793d348 | 918 | #ifdef _NL_CURRENT |
ec4b0518 UD |
919 | if (! (modifier == 'E' |
920 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0')) | |
f0f1bf85 | 921 | subfmt = _NL_CURRENT (LC_TIME, T_FMT); |
0793d348 RM |
922 | goto subformat; |
923 | #endif | |
924 | /* Fall through. */ | |
ec4b0518 | 925 | case 'T': /* POSIX.2 extension. */ |
28f540f4 RM |
926 | subfmt = "%H:%M:%S"; |
927 | goto subformat; | |
928 | ||
ec4b0518 | 929 | case 't': /* POSIX.2 extension. */ |
28f540f4 RM |
930 | add (1, *p = '\t'); |
931 | break; | |
932 | ||
ec4b0518 UD |
933 | case 'u': /* POSIX.2 extension. */ |
934 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
935 | ||
28f540f4 | 936 | case 'U': |
ec4b0518 | 937 | if (modifier == 'E') |
f0f1bf85 UD |
938 | goto bad_format; |
939 | ||
ec4b0518 | 940 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); |
28f540f4 | 941 | |
339841f9 | 942 | case 'V': |
ec4b0518 UD |
943 | case 'g': /* GNU extension. */ |
944 | case 'G': /* GNU extension. */ | |
945 | if (modifier == 'E') | |
f0f1bf85 | 946 | goto bad_format; |
ec4b0518 UD |
947 | { |
948 | int year = tp->tm_year + TM_YEAR_BASE; | |
949 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
950 | ||
951 | if (days < 0) | |
952 | { | |
953 | /* This ISO week belongs to the previous year. */ | |
954 | year--; | |
955 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
956 | tp->tm_wday); | |
957 | } | |
958 | else | |
959 | { | |
960 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
961 | tp->tm_wday); | |
962 | if (0 <= d) | |
963 | { | |
964 | /* This ISO week belongs to the next year. */ | |
965 | year++; | |
966 | days = d; | |
967 | } | |
968 | } | |
969 | ||
970 | switch (*f) | |
971 | { | |
972 | case 'g': | |
973 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
974 | ||
975 | case 'G': | |
976 | DO_NUMBER (1, year); | |
f0f1bf85 | 977 | |
ec4b0518 UD |
978 | default: |
979 | DO_NUMBER (2, days / 7 + 1); | |
980 | } | |
981 | } | |
339841f9 | 982 | |
28f540f4 | 983 | case 'W': |
ec4b0518 | 984 | if (modifier == 'E') |
f0f1bf85 UD |
985 | goto bad_format; |
986 | ||
ec4b0518 | 987 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); |
28f540f4 RM |
988 | |
989 | case 'w': | |
ec4b0518 | 990 | if (modifier == 'E') |
f0f1bf85 UD |
991 | goto bad_format; |
992 | ||
ec4b0518 | 993 | DO_NUMBER (1, tp->tm_wday); |
28f540f4 | 994 | |
28f540f4 | 995 | case 'Y': |
d68171ed UD |
996 | #if HAVE_STRUCT_ERA_ENTRY |
997 | if (modifier == 'E') | |
998 | { | |
999 | struct era_entry *era = _nl_get_era_entry (tp); | |
1000 | if (era) | |
1001 | { | |
1002 | subfmt = strchr (era->name_fmt, '\0') + 1; | |
1003 | goto subformat; | |
1004 | } | |
1005 | } | |
f0f1bf85 | 1006 | #endif |
ec4b0518 UD |
1007 | if (modifier == 'O') |
1008 | goto bad_format; | |
1009 | else | |
1010 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
28f540f4 RM |
1011 | |
1012 | case 'y': | |
d68171ed UD |
1013 | #if HAVE_STRUCT_ERA_ENTRY |
1014 | if (modifier == 'E') | |
1015 | { | |
1016 | struct era_entry *era = _nl_get_era_entry (tp); | |
1017 | if (era) | |
1018 | { | |
1019 | int delta = tp->tm_year - era->start_date[0]; | |
1020 | DO_NUMBER (1, (era->offset | |
1021 | + (era->direction == '-' ? -delta : delta))); | |
1022 | } | |
1023 | } | |
f0f1bf85 | 1024 | #endif |
ec4b0518 | 1025 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); |
28f540f4 RM |
1026 | |
1027 | case 'Z': | |
cf29ffbe UD |
1028 | if (change_case) |
1029 | { | |
1030 | to_uppcase = 0; | |
1031 | to_lowcase = 1; | |
1032 | } | |
26761c28 | 1033 | cpy (zonelen, zone); |
28f540f4 RM |
1034 | break; |
1035 | ||
f0f1bf85 UD |
1036 | case 'z': /* GNU extension. */ |
1037 | if (tp->tm_isdst < 0) | |
1038 | break; | |
1039 | ||
2de99474 | 1040 | { |
2de99474 | 1041 | int diff; |
f0f1bf85 UD |
1042 | #if HAVE_TM_GMTOFF |
1043 | diff = tp->tm_gmtoff; | |
1044 | #else | |
1045 | struct tm gtm; | |
b33f91e9 UD |
1046 | struct tm ltm; |
1047 | time_t lt; | |
1048 | ||
1049 | ltm = *tp; | |
1050 | lt = mktime (<m); | |
2de99474 | 1051 | |
f0f1bf85 | 1052 | if (lt == (time_t) -1) |
2de99474 | 1053 | { |
f0f1bf85 UD |
1054 | /* mktime returns -1 for errors, but -1 is also a |
1055 | valid time_t value. Check whether an error really | |
1056 | occurred. */ | |
1057 | struct tm tm; | |
1058 | localtime_r (<, &tm); | |
1059 | ||
1060 | if ((ltm.tm_sec ^ tm.tm_sec) | |
1061 | | (ltm.tm_min ^ tm.tm_min) | |
1062 | | (ltm.tm_hour ^ tm.tm_hour) | |
1063 | | (ltm.tm_mday ^ tm.tm_mday) | |
1064 | | (ltm.tm_mon ^ tm.tm_mon) | |
1065 | | (ltm.tm_year ^ tm.tm_year)) | |
1066 | break; | |
1067 | } | |
dcf0671d | 1068 | |
f0f1bf85 UD |
1069 | if (! gmtime_r (<, >m)) |
1070 | break; | |
dcf0671d | 1071 | |
f0f1bf85 UD |
1072 | diff = tm_diff (<m, >m); |
1073 | #endif | |
2de99474 UD |
1074 | |
1075 | if (diff < 0) | |
1076 | { | |
1077 | add (1, *p = '-'); | |
1078 | diff = -diff; | |
1079 | } | |
1080 | else | |
1081 | add (1, *p = '+'); | |
1082 | ||
f0f1bf85 UD |
1083 | diff /= 60; |
1084 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
2de99474 UD |
1085 | } |
1086 | ||
d68171ed UD |
1087 | case '\0': /* GNU extension: % at end of format. */ |
1088 | --f; | |
1089 | /* Fall through. */ | |
28f540f4 | 1090 | default: |
ec4b0518 UD |
1091 | /* Unknown format; output the format, including the '%', |
1092 | since this is most likely the right thing to do if a | |
1093 | multibyte string has been misparsed. */ | |
f0f1bf85 | 1094 | bad_format: |
ec4b0518 UD |
1095 | { |
1096 | int flen; | |
d68171ed | 1097 | for (flen = 1; f[1 - flen] != '%'; flen++) |
ec4b0518 UD |
1098 | continue; |
1099 | cpy (flen, &f[1 - flen]); | |
1100 | } | |
28f540f4 RM |
1101 | break; |
1102 | } | |
1103 | } | |
1104 | ||
0793d348 | 1105 | if (p) |
28f540f4 RM |
1106 | *p = '\0'; |
1107 | return i; | |
1108 | } |