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b7459e56 | 1 | /* Copyright (C) 1991, 92, 93, 94, 95, 96 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 |
ec4b0518 | 30 | # define MULTIBYTE_IS_FORMAT_SAFE 1 |
0793d348 RM |
31 | # define STDC_HEADERS 1 |
32 | # include <ansidecl.h> | |
33 | # include "../locale/localeinfo.h" | |
34 | #endif | |
35 | ||
0793d348 | 36 | #include <sys/types.h> /* Some systems define `time_t' here. */ |
75cd5204 RM |
37 | |
38 | #ifdef TIME_WITH_SYS_TIME | |
39 | # include <sys/time.h> | |
40 | # include <time.h> | |
41 | #else | |
42 | # ifdef HAVE_SYS_TIME_H | |
43 | # include <sys/time.h> | |
44 | # else | |
45 | # include <time.h> | |
46 | # endif | |
47 | #endif | |
28f540f4 | 48 | |
ec4b0518 UD |
49 | /* Do multibyte processing if multibytes are supported, unless |
50 | multibyte sequences are safe in formats. Multibyte sequences are | |
51 | safe if they cannot contain byte sequences that look like format | |
52 | conversion specifications. The GNU C Library uses UTF8 multibyte | |
53 | encoding, which is safe for formats, but strftime.c can be used | |
54 | with other C libraries that use unsafe encodings. */ | |
55 | #define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE) | |
56 | ||
57 | #if DO_MULTIBYTE | |
58 | # if HAVE_MBRLEN | |
59 | # include <wchar.h> | |
60 | # else | |
61 | /* Simulate mbrlen with mblen as best we can. */ | |
62 | # define mbstate_t int | |
63 | # define mbrlen(s, n, ps) mblen (s, n) | |
64 | # define mbsinit(ps) (*(ps) == 0) | |
65 | # endif | |
66 | static const mbstate_t mbstate_zero; | |
0793d348 RM |
67 | #endif |
68 | ||
69 | #if HAVE_LIMITS_H | |
70 | # include <limits.h> | |
28f540f4 RM |
71 | #endif |
72 | ||
0793d348 RM |
73 | #if STDC_HEADERS |
74 | # include <stddef.h> | |
75 | # include <stdlib.h> | |
76 | # include <string.h> | |
77 | #else | |
78 | # define memcpy(d, s, n) bcopy (s, d, n) | |
79 | #endif | |
80 | ||
81 | #ifndef __P | |
82 | #if defined (__GNUC__) || (defined (__STDC__) && __STDC__) | |
83 | #define __P(args) args | |
84 | #else | |
85 | #define __P(args) () | |
86 | #endif /* GCC. */ | |
87 | #endif /* Not __P. */ | |
88 | ||
89 | #ifndef PTR | |
90 | #ifdef __STDC__ | |
91 | #define PTR void * | |
92 | #else | |
93 | #define PTR char * | |
94 | #endif | |
95 | #endif | |
96 | ||
f0f1bf85 UD |
97 | #ifndef CHAR_BIT |
98 | #define CHAR_BIT 8 | |
99 | #endif | |
100 | ||
101 | #define TYPE_SIGNED(t) ((t) -1 < 0) | |
102 | ||
103 | /* Bound on length of the string representing an integer value of type t. | |
104 | Subtract one for the sign bit if t is signed; | |
105 | 302 / 1000 is log10 (2) rounded up; | |
106 | add one for integer division truncation; | |
107 | add one more for a minus sign if t is signed. */ | |
108 | #define INT_STRLEN_BOUND(t) \ | |
109 | ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 100 + 1 + TYPE_SIGNED (t)) | |
110 | ||
111 | #define TM_YEAR_BASE 1900 | |
112 | ||
ec4b0518 UD |
113 | #ifndef __isleap |
114 | /* Nonzero if YEAR is a leap year (every 4 years, | |
115 | except every 100th isn't, and every 400th is). */ | |
116 | #define __isleap(year) \ | |
117 | ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) | |
118 | #endif | |
119 | ||
2de99474 | 120 | |
fafaa44e UD |
121 | #ifdef _LIBC |
122 | # define gmtime_r __gmtime_r | |
123 | # define localtime_r __localtime_r | |
124 | #else | |
125 | # if ! HAVE_LOCALTIME_R | |
126 | # if ! HAVE_TM_GMTOFF | |
127 | /* Approximate gmtime_r as best we can in its absence. */ | |
128 | #define gmtime_r my_gmtime_r | |
129 | static struct tm *gmtime_r __P ((const time_t *, struct tm *)); | |
130 | static struct tm * | |
131 | gmtime_r (t, tp) | |
132 | const time_t *t; | |
133 | struct tm *tp; | |
134 | { | |
135 | struct tm *l = gmtime (t); | |
136 | if (! l) | |
137 | return 0; | |
138 | *tp = *l; | |
139 | return tp; | |
140 | } | |
141 | # endif /* ! HAVE_TM_GMTOFF */ | |
142 | ||
143 | /* Approximate localtime_r as best we can in its absence. */ | |
144 | #define localtime_r my_localtime_r | |
145 | static struct tm *localtime_r __P ((const time_t *, struct tm *)); | |
146 | static struct tm * | |
147 | localtime_r (t, tp) | |
148 | const time_t *t; | |
149 | struct tm *tp; | |
150 | { | |
151 | struct tm *l = localtime (t); | |
152 | if (! l) | |
153 | return 0; | |
154 | *tp = *l; | |
155 | return tp; | |
156 | } | |
157 | # endif /* ! HAVE_LOCALTIME_R */ | |
158 | #endif /* ! defined (_LIBC) */ | |
159 | ||
160 | ||
28f540f4 RM |
161 | #define add(n, f) \ |
162 | do \ | |
163 | { \ | |
164 | i += (n); \ | |
165 | if (i >= maxsize) \ | |
166 | return 0; \ | |
167 | else \ | |
0793d348 | 168 | if (p) \ |
28f540f4 RM |
169 | { \ |
170 | f; \ | |
171 | p += (n); \ | |
172 | } \ | |
173 | } while (0) | |
2de99474 | 174 | #define cpy(n, s) add ((n), memcpy((PTR) p, (PTR) (s), (n))) |
0793d348 | 175 | |
f0f1bf85 UD |
176 | #if ! HAVE_TM_GMTOFF |
177 | /* Yield the difference between *A and *B, | |
178 | measured in seconds, ignoring leap seconds. */ | |
179 | static int tm_diff __P ((const struct tm *, const struct tm *)); | |
180 | static int | |
181 | tm_diff (a, b) | |
182 | const struct tm *a; | |
183 | const struct tm *b; | |
184 | { | |
ec4b0518 UD |
185 | /* Compute intervening leap days correctly even if year is negative. |
186 | Take care to avoid int overflow in leap day calculations, | |
187 | but it's OK to assume that A and B are close to each other. */ | |
188 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
189 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
190 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
191 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
192 | int a400 = a100 >> 2; | |
193 | int b400 = b100 >> 2; | |
194 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
195 | int years = a->tm_year - b->tm_year; | |
f0f1bf85 UD |
196 | int days = (365 * years + intervening_leap_days |
197 | + (a->tm_yday - b->tm_yday)); | |
198 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
199 | + (a->tm_min - b->tm_min)) | |
200 | + (a->tm_sec - b->tm_sec)); | |
201 | } | |
202 | #endif /* ! HAVE_TM_GMTOFF */ | |
28f540f4 | 203 | |
b7459e56 RM |
204 | |
205 | ||
ec4b0518 UD |
206 | /* The number of days from the first day of the first ISO week of this |
207 | year to the year day YDAY with week day WDAY. ISO weeks start on | |
208 | Monday; the first ISO week has the year's first Thursday. YDAY may | |
209 | be as small as YDAY_MINIMUM. */ | |
210 | #define ISO_WEEK_START_WDAY 1 /* Monday */ | |
211 | #define ISO_WEEK1_WDAY 4 /* Thursday */ | |
212 | #define YDAY_MINIMUM (-366) | |
213 | static int iso_week_days __P ((int, int)); | |
214 | #ifdef __GNUC__ | |
28f540f4 RM |
215 | inline |
216 | #endif | |
ec4b0518 UD |
217 | static int |
218 | iso_week_days (yday, wday) | |
219 | int yday; | |
220 | int wday; | |
28f540f4 | 221 | { |
ec4b0518 UD |
222 | /* Add enough to the first operand of % to make it nonnegative. */ |
223 | int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7; | |
224 | return (yday | |
225 | - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7 | |
226 | + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY); | |
28f540f4 RM |
227 | } |
228 | ||
ec4b0518 | 229 | |
0793d348 RM |
230 | #ifndef _NL_CURRENT |
231 | static char const weekday_name[][10] = | |
232 | { | |
233 | "Sunday", "Monday", "Tuesday", "Wednesday", | |
234 | "Thursday", "Friday", "Saturday" | |
235 | }; | |
236 | static char const month_name[][10] = | |
237 | { | |
238 | "January", "February", "March", "April", "May", "June", | |
239 | "July", "August", "September", "October", "November", "December" | |
240 | }; | |
241 | #endif | |
28f540f4 RM |
242 | |
243 | /* Write information from TP into S according to the format | |
244 | string FORMAT, writing no more that MAXSIZE characters | |
245 | (including the terminating '\0') and returning number of | |
246 | characters written. If S is NULL, nothing will be written | |
247 | anywhere, so to determine how many characters would be | |
248 | written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */ | |
249 | size_t | |
0793d348 RM |
250 | strftime (s, maxsize, format, tp) |
251 | char *s; | |
252 | size_t maxsize; | |
253 | const char *format; | |
254 | register const struct tm *tp; | |
28f540f4 | 255 | { |
0793d348 RM |
256 | int hour12 = tp->tm_hour; |
257 | #ifdef _NL_CURRENT | |
258 | const char *const a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday); | |
259 | const char *const f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday); | |
260 | const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon); | |
261 | const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon); | |
262 | const char *const ampm = _NL_CURRENT (LC_TIME, | |
b20e47cb | 263 | hour12 > 11 ? PM_STR : AM_STR); |
d68171ed UD |
264 | size_t aw_len = strlen (a_wkday); |
265 | size_t am_len = strlen (a_month); | |
0793d348 RM |
266 | size_t ap_len = strlen (ampm); |
267 | #else | |
268 | const char *const f_wkday = weekday_name[tp->tm_wday]; | |
269 | const char *const f_month = month_name[tp->tm_mon]; | |
270 | const char *const a_wkday = f_wkday; | |
271 | const char *const a_month = f_month; | |
b20e47cb | 272 | const char *const ampm = "AMPM" + 2 * (hour12 > 11); |
0793d348 RM |
273 | size_t aw_len = 3; |
274 | size_t am_len = 3; | |
275 | size_t ap_len = 2; | |
276 | #endif | |
2de99474 UD |
277 | size_t wkday_len = strlen (f_wkday); |
278 | size_t month_len = strlen (f_month); | |
0793d348 | 279 | const char *zone; |
28f540f4 RM |
280 | size_t zonelen; |
281 | register size_t i = 0; | |
282 | register char *p = s; | |
0793d348 | 283 | register const char *f; |
28f540f4 | 284 | |
0793d348 RM |
285 | zone = 0; |
286 | #if HAVE_TM_ZONE | |
287 | zone = (const char *) tp->tm_zone; | |
288 | #endif | |
289 | #if HAVE_TZNAME | |
290 | if (!(zone && *zone) && tp->tm_isdst >= 0) | |
291 | zone = tzname[tp->tm_isdst]; | |
292 | #endif | |
ec4b0518 UD |
293 | if (! zone) |
294 | zone = ""; /* POSIX.2 requires the empty string here. */ | |
0793d348 RM |
295 | |
296 | zonelen = strlen (zone); | |
28f540f4 RM |
297 | |
298 | if (hour12 > 12) | |
299 | hour12 -= 12; | |
300 | else | |
301 | if (hour12 == 0) hour12 = 12; | |
302 | ||
303 | for (f = format; *f != '\0'; ++f) | |
304 | { | |
ec4b0518 UD |
305 | int pad; /* Padding for number ('-', '_', or 0). */ |
306 | int modifier; /* Field modifier ('E', 'O', or 0). */ | |
307 | int digits; /* Max digits for numeric format. */ | |
308 | int number_value; /* Numeric value to be printed. */ | |
f0f1bf85 | 309 | int negative_number; /* 1 if the number is negative. */ |
ec4b0518 | 310 | const char *subfmt; |
f0f1bf85 UD |
311 | char *bufp; |
312 | char buf[1 + (sizeof (int) < sizeof (time_t) | |
313 | ? INT_STRLEN_BOUND (time_t) | |
314 | : INT_STRLEN_BOUND (int))]; | |
28f540f4 | 315 | |
ec4b0518 UD |
316 | #if DO_MULTIBYTE |
317 | ||
318 | switch (*f) | |
28f540f4 | 319 | { |
ec4b0518 UD |
320 | case '%': |
321 | break; | |
322 | ||
323 | case '\a': case '\b': case '\t': case '\n': | |
324 | case '\v': case '\f': case '\r': | |
325 | case ' ': case '!': case '"': case '#': case '&': case'\'': | |
326 | case '(': case ')': case '*': case '+': case ',': case '-': | |
327 | case '.': case '/': case '0': case '1': case '2': case '3': | |
328 | case '4': case '5': case '6': case '7': case '8': case '9': | |
329 | case ':': case ';': case '<': case '=': case '>': case '?': | |
330 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
331 | case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
332 | case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
333 | case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
334 | case 'Y': case 'Z': case '[': case'\\': case ']': case '^': | |
335 | case '_': case 'a': case 'b': case 'c': case 'd': case 'e': | |
336 | case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': | |
337 | case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': | |
338 | case 'r': case 's': case 't': case 'u': case 'v': case 'w': | |
339 | case 'x': case 'y': case 'z': case '{': case '|': case '}': | |
340 | case '~': | |
341 | /* The C Standard requires these 98 characters (plus '%') to | |
342 | be in the basic execution character set. None of these | |
343 | characters can start a multibyte sequence, so they need | |
344 | not be analyzed further. */ | |
345 | add (1, *p = *f); | |
346 | continue; | |
347 | ||
348 | default: | |
349 | /* Copy this multibyte sequence until we reach its end, find | |
350 | an error, or come back to the initial shift state. */ | |
351 | { | |
352 | mbstate_t mbstate = mbstate_zero; | |
353 | size_t len = 0; | |
354 | ||
355 | do | |
356 | { | |
357 | size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate); | |
358 | ||
359 | if (bytes == 0) | |
360 | break; | |
361 | ||
362 | if (bytes == (size_t) -2 || bytes == (size_t) -1) | |
363 | { | |
364 | len++; | |
365 | break; | |
366 | } | |
367 | ||
368 | len += bytes; | |
369 | } | |
370 | while (! mbsinit (&mbstate)); | |
371 | ||
372 | cpy (len, f); | |
373 | continue; | |
374 | } | |
28f540f4 RM |
375 | } |
376 | ||
ec4b0518 UD |
377 | #else /* ! DO_MULTIBYTE */ |
378 | ||
379 | /* Either multibyte encodings are not supported, or they are | |
380 | safe for formats, so any non-'%' byte can be copied through. */ | |
28f540f4 RM |
381 | if (*f != '%') |
382 | { | |
2de99474 | 383 | add (1, *p = *f); |
28f540f4 RM |
384 | continue; |
385 | } | |
386 | ||
ec4b0518 UD |
387 | #endif /* ! DO_MULTIBYTE */ |
388 | ||
b7459e56 | 389 | /* Check for flags that can modify a number format. */ |
28f540f4 | 390 | ++f; |
b7459e56 RM |
391 | switch (*f) |
392 | { | |
393 | case '_': | |
b7459e56 | 394 | case '-': |
ec4b0518 | 395 | pad = *f++; |
b7459e56 | 396 | break; |
ec4b0518 | 397 | |
b7459e56 | 398 | default: |
ec4b0518 | 399 | pad = 0; |
b7459e56 RM |
400 | break; |
401 | } | |
402 | ||
f0f1bf85 UD |
403 | /* Check for modifiers. */ |
404 | switch (*f) | |
405 | { | |
406 | case 'E': | |
f0f1bf85 | 407 | case 'O': |
ec4b0518 | 408 | modifier = *f++; |
f0f1bf85 | 409 | break; |
ec4b0518 | 410 | |
f0f1bf85 | 411 | default: |
ec4b0518 | 412 | modifier = 0; |
f0f1bf85 UD |
413 | break; |
414 | } | |
415 | ||
b7459e56 | 416 | /* Now do the specified format. */ |
28f540f4 RM |
417 | switch (*f) |
418 | { | |
f0f1bf85 UD |
419 | #define DO_NUMBER(d, v) \ |
420 | digits = d; number_value = v; goto do_number | |
421 | #define DO_NUMBER_SPACEPAD(d, v) \ | |
422 | digits = d; number_value = v; goto do_number_spacepad | |
423 | ||
28f540f4 | 424 | case '%': |
ec4b0518 | 425 | if (modifier != 0) |
f0f1bf85 | 426 | goto bad_format; |
2de99474 | 427 | add (1, *p = *f); |
28f540f4 RM |
428 | break; |
429 | ||
430 | case 'a': | |
ec4b0518 | 431 | if (modifier != 0) |
f0f1bf85 | 432 | goto bad_format; |
2de99474 | 433 | cpy (aw_len, a_wkday); |
28f540f4 RM |
434 | break; |
435 | ||
436 | case 'A': | |
ec4b0518 | 437 | if (modifier != 0) |
f0f1bf85 | 438 | goto bad_format; |
2de99474 | 439 | cpy (wkday_len, f_wkday); |
28f540f4 RM |
440 | break; |
441 | ||
442 | case 'b': | |
ec4b0518 UD |
443 | case 'h': /* POSIX.2 extension. */ |
444 | if (modifier != 0) | |
f0f1bf85 | 445 | goto bad_format; |
2de99474 | 446 | cpy (am_len, a_month); |
28f540f4 RM |
447 | break; |
448 | ||
449 | case 'B': | |
ec4b0518 | 450 | if (modifier != 0) |
f0f1bf85 | 451 | goto bad_format; |
2de99474 | 452 | cpy (month_len, f_month); |
28f540f4 RM |
453 | break; |
454 | ||
455 | case 'c': | |
ec4b0518 | 456 | if (modifier == 'O') |
f0f1bf85 | 457 | goto bad_format; |
0793d348 | 458 | #ifdef _NL_CURRENT |
ec4b0518 UD |
459 | if (! (modifier == 'E' |
460 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0')) | |
f0f1bf85 | 461 | subfmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
0793d348 | 462 | #else |
f65fd747 | 463 | subfmt = "%a %b %e %H:%M:%S %Y"; |
0793d348 | 464 | #endif |
f0f1bf85 | 465 | |
28f540f4 RM |
466 | subformat: |
467 | { | |
468 | size_t len = strftime (p, maxsize - i, subfmt, tp); | |
0793d348 RM |
469 | if (len == 0 && *subfmt) |
470 | return 0; | |
ec42724d | 471 | add (len, ;); |
28f540f4 RM |
472 | } |
473 | break; | |
474 | ||
ec4b0518 UD |
475 | case 'C': /* POSIX.2 extension. */ |
476 | if (modifier == 'O') | |
f0f1bf85 | 477 | goto bad_format; |
d68171ed UD |
478 | #if HAVE_STRUCT_ERA_ENTRY |
479 | if (modifier == 'E') | |
480 | { | |
481 | struct era_entry *era = _nl_get_era_entry (tp); | |
482 | if (era) | |
483 | { | |
484 | size_t len = strlen (era->name_fmt); | |
485 | cpy (len, era->name_fmt); | |
486 | break; | |
487 | } | |
488 | } | |
f0f1bf85 | 489 | #endif |
ec4b0518 UD |
490 | { |
491 | int year = tp->tm_year + TM_YEAR_BASE; | |
492 | DO_NUMBER (1, year / 100 - (year % 100 < 0)); | |
493 | } | |
28f540f4 | 494 | |
0793d348 | 495 | case 'x': |
ec4b0518 | 496 | if (modifier == 'O') |
f0f1bf85 | 497 | goto bad_format; |
0793d348 | 498 | #ifdef _NL_CURRENT |
ec4b0518 UD |
499 | if (! (modifier == 'E' |
500 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0')) | |
f0f1bf85 | 501 | subfmt = _NL_CURRENT (LC_TIME, D_FMT); |
0793d348 RM |
502 | goto subformat; |
503 | #endif | |
504 | /* Fall through. */ | |
ec4b0518 UD |
505 | case 'D': /* POSIX.2 extension. */ |
506 | if (modifier != 0) | |
507 | goto bad_format; | |
28f540f4 RM |
508 | subfmt = "%m/%d/%y"; |
509 | goto subformat; | |
510 | ||
511 | case 'd': | |
ec4b0518 | 512 | if (modifier == 'E') |
f0f1bf85 UD |
513 | goto bad_format; |
514 | ||
b7459e56 | 515 | DO_NUMBER (2, tp->tm_mday); |
28f540f4 | 516 | |
ec4b0518 UD |
517 | case 'e': /* POSIX.2 extension. */ |
518 | if (modifier == 'E') | |
f0f1bf85 UD |
519 | goto bad_format; |
520 | ||
2064087b | 521 | DO_NUMBER_SPACEPAD (2, tp->tm_mday); |
b7459e56 | 522 | |
f0f1bf85 | 523 | /* All numeric formats set DIGITS and NUMBER_VALUE and then |
b7459e56 RM |
524 | jump to one of these two labels. */ |
525 | ||
2064087b RM |
526 | do_number_spacepad: |
527 | /* Force `_' flag. */ | |
ec4b0518 | 528 | pad = '_'; |
b7459e56 RM |
529 | |
530 | do_number: | |
f0f1bf85 UD |
531 | /* Format the number according to the MODIFIER flag. */ |
532 | ||
533 | #ifdef _NL_CURRENT | |
ec4b0518 | 534 | if (modifier == 'O' && 0 <= number_value) |
f0f1bf85 | 535 | { |
c4029823 UD |
536 | /* Get the locale specific alternate representation of |
537 | the number NUMBER_VALUE. If none exist NULL is returned. */ | |
538 | const char *cp = _nl_get_alt_digit (number_value); | |
ec4b0518 | 539 | |
c4029823 | 540 | if (cp != NULL) |
ec4b0518 UD |
541 | { |
542 | size_t digitlen = strlen (cp); | |
543 | if (digitlen != 0) | |
544 | { | |
545 | cpy (digitlen, cp); | |
546 | break; | |
547 | } | |
548 | } | |
f0f1bf85 UD |
549 | } |
550 | #endif | |
b7459e56 | 551 | { |
f0f1bf85 | 552 | unsigned int u = number_value; |
b7459e56 | 553 | |
f0f1bf85 UD |
554 | bufp = buf + sizeof (buf); |
555 | negative_number = number_value < 0; | |
b7459e56 | 556 | |
f0f1bf85 UD |
557 | if (negative_number) |
558 | u = -u; | |
b7459e56 | 559 | |
f0f1bf85 UD |
560 | do |
561 | *--bufp = u % 10 + '0'; | |
562 | while ((u /= 10) != 0); | |
563 | } | |
b7459e56 | 564 | |
f0f1bf85 UD |
565 | do_number_sign_and_padding: |
566 | if (negative_number) | |
567 | *--bufp = '-'; | |
568 | ||
ec4b0518 | 569 | if (pad != '-') |
f0f1bf85 UD |
570 | { |
571 | int padding = digits - (buf + sizeof (buf) - bufp); | |
572 | ||
ec4b0518 | 573 | if (pad == '_') |
f0f1bf85 UD |
574 | { |
575 | while (0 < padding--) | |
576 | *--bufp = ' '; | |
577 | } | |
578 | else | |
579 | { | |
580 | bufp += negative_number; | |
581 | while (0 < padding--) | |
582 | *--bufp = '0'; | |
583 | if (negative_number) | |
584 | *--bufp = '-'; | |
585 | } | |
586 | } | |
587 | ||
588 | cpy (buf + sizeof (buf) - bufp, bufp); | |
f0f1bf85 | 589 | break; |
b7459e56 | 590 | |
28f540f4 RM |
591 | |
592 | case 'H': | |
ec4b0518 | 593 | if (modifier == 'E') |
f0f1bf85 UD |
594 | goto bad_format; |
595 | ||
b7459e56 | 596 | DO_NUMBER (2, tp->tm_hour); |
28f540f4 RM |
597 | |
598 | case 'I': | |
ec4b0518 | 599 | if (modifier == 'E') |
f0f1bf85 UD |
600 | goto bad_format; |
601 | ||
b7459e56 | 602 | DO_NUMBER (2, hour12); |
28f540f4 RM |
603 | |
604 | case 'k': /* GNU extension. */ | |
ec4b0518 | 605 | if (modifier == 'E') |
f0f1bf85 UD |
606 | goto bad_format; |
607 | ||
2064087b | 608 | DO_NUMBER_SPACEPAD (2, tp->tm_hour); |
28f540f4 RM |
609 | |
610 | case 'l': /* GNU extension. */ | |
ec4b0518 | 611 | if (modifier == 'E') |
f0f1bf85 UD |
612 | goto bad_format; |
613 | ||
2064087b | 614 | DO_NUMBER_SPACEPAD (2, hour12); |
28f540f4 RM |
615 | |
616 | case 'j': | |
ec4b0518 | 617 | if (modifier == 'E') |
f0f1bf85 UD |
618 | goto bad_format; |
619 | ||
b7459e56 | 620 | DO_NUMBER (3, 1 + tp->tm_yday); |
28f540f4 RM |
621 | |
622 | case 'M': | |
ec4b0518 | 623 | if (modifier == 'E') |
f0f1bf85 UD |
624 | goto bad_format; |
625 | ||
b7459e56 | 626 | DO_NUMBER (2, tp->tm_min); |
28f540f4 RM |
627 | |
628 | case 'm': | |
ec4b0518 | 629 | if (modifier == 'E') |
f0f1bf85 UD |
630 | goto bad_format; |
631 | ||
b7459e56 | 632 | DO_NUMBER (2, tp->tm_mon + 1); |
28f540f4 | 633 | |
ec4b0518 | 634 | case 'n': /* POSIX.2 extension. */ |
28f540f4 RM |
635 | add (1, *p = '\n'); |
636 | break; | |
637 | ||
638 | case 'p': | |
2de99474 | 639 | cpy (ap_len, ampm); |
28f540f4 RM |
640 | break; |
641 | ||
642 | case 'R': /* GNU extension. */ | |
643 | subfmt = "%H:%M"; | |
644 | goto subformat; | |
645 | ||
ec4b0518 UD |
646 | case 'r': /* POSIX.2 extension. */ |
647 | #ifdef _NL_CURRENT | |
648 | if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0') | |
649 | #endif | |
650 | subfmt = "%I:%M:%S %p"; | |
28f540f4 RM |
651 | goto subformat; |
652 | ||
653 | case 'S': | |
ec4b0518 UD |
654 | if (modifier == 'E') |
655 | goto bad_format; | |
f0f1bf85 | 656 | |
b7459e56 | 657 | DO_NUMBER (2, tp->tm_sec); |
28f540f4 | 658 | |
2de99474 | 659 | case 's': /* GNU extension. */ |
f0f1bf85 | 660 | { |
b33f91e9 UD |
661 | struct tm ltm; |
662 | time_t t; | |
663 | ||
664 | ltm = *tp; | |
665 | t = mktime (<m); | |
f0f1bf85 UD |
666 | |
667 | /* Generate string value for T using time_t arithmetic; | |
668 | this works even if sizeof (long) < sizeof (time_t). */ | |
669 | ||
670 | bufp = buf + sizeof (buf); | |
671 | negative_number = t < 0; | |
672 | ||
673 | do | |
674 | { | |
675 | int d = t % 10; | |
676 | t /= 10; | |
677 | ||
678 | if (negative_number) | |
679 | { | |
680 | d = -d; | |
681 | ||
682 | /* Adjust if division truncates to minus infinity. */ | |
683 | if (0 < -1 % 10 && d < 0) | |
684 | { | |
685 | t++; | |
686 | d += 10; | |
687 | } | |
688 | } | |
689 | ||
690 | *--bufp = d + '0'; | |
691 | } | |
692 | while (t != 0); | |
693 | ||
694 | digits = 1; | |
695 | goto do_number_sign_and_padding; | |
2de99474 | 696 | } |
2de99474 | 697 | |
0793d348 | 698 | case 'X': |
ec4b0518 | 699 | if (modifier == 'O') |
f0f1bf85 | 700 | goto bad_format; |
0793d348 | 701 | #ifdef _NL_CURRENT |
ec4b0518 UD |
702 | if (! (modifier == 'E' |
703 | && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0')) | |
f0f1bf85 | 704 | subfmt = _NL_CURRENT (LC_TIME, T_FMT); |
0793d348 RM |
705 | goto subformat; |
706 | #endif | |
707 | /* Fall through. */ | |
ec4b0518 | 708 | case 'T': /* POSIX.2 extension. */ |
28f540f4 RM |
709 | subfmt = "%H:%M:%S"; |
710 | goto subformat; | |
711 | ||
ec4b0518 | 712 | case 't': /* POSIX.2 extension. */ |
28f540f4 RM |
713 | add (1, *p = '\t'); |
714 | break; | |
715 | ||
ec4b0518 UD |
716 | case 'u': /* POSIX.2 extension. */ |
717 | DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1); | |
718 | ||
28f540f4 | 719 | case 'U': |
ec4b0518 | 720 | if (modifier == 'E') |
f0f1bf85 UD |
721 | goto bad_format; |
722 | ||
ec4b0518 | 723 | DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7); |
28f540f4 | 724 | |
339841f9 | 725 | case 'V': |
ec4b0518 UD |
726 | case 'g': /* GNU extension. */ |
727 | case 'G': /* GNU extension. */ | |
728 | if (modifier == 'E') | |
f0f1bf85 | 729 | goto bad_format; |
ec4b0518 UD |
730 | { |
731 | int year = tp->tm_year + TM_YEAR_BASE; | |
732 | int days = iso_week_days (tp->tm_yday, tp->tm_wday); | |
733 | ||
734 | if (days < 0) | |
735 | { | |
736 | /* This ISO week belongs to the previous year. */ | |
737 | year--; | |
738 | days = iso_week_days (tp->tm_yday + (365 + __isleap (year)), | |
739 | tp->tm_wday); | |
740 | } | |
741 | else | |
742 | { | |
743 | int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)), | |
744 | tp->tm_wday); | |
745 | if (0 <= d) | |
746 | { | |
747 | /* This ISO week belongs to the next year. */ | |
748 | year++; | |
749 | days = d; | |
750 | } | |
751 | } | |
752 | ||
753 | switch (*f) | |
754 | { | |
755 | case 'g': | |
756 | DO_NUMBER (2, (year % 100 + 100) % 100); | |
757 | ||
758 | case 'G': | |
759 | DO_NUMBER (1, year); | |
f0f1bf85 | 760 | |
ec4b0518 UD |
761 | default: |
762 | DO_NUMBER (2, days / 7 + 1); | |
763 | } | |
764 | } | |
339841f9 | 765 | |
28f540f4 | 766 | case 'W': |
ec4b0518 | 767 | if (modifier == 'E') |
f0f1bf85 UD |
768 | goto bad_format; |
769 | ||
ec4b0518 | 770 | DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7); |
28f540f4 RM |
771 | |
772 | case 'w': | |
ec4b0518 | 773 | if (modifier == 'E') |
f0f1bf85 UD |
774 | goto bad_format; |
775 | ||
ec4b0518 | 776 | DO_NUMBER (1, tp->tm_wday); |
28f540f4 | 777 | |
28f540f4 | 778 | case 'Y': |
d68171ed UD |
779 | #if HAVE_STRUCT_ERA_ENTRY |
780 | if (modifier == 'E') | |
781 | { | |
782 | struct era_entry *era = _nl_get_era_entry (tp); | |
783 | if (era) | |
784 | { | |
785 | subfmt = strchr (era->name_fmt, '\0') + 1; | |
786 | goto subformat; | |
787 | } | |
788 | } | |
f0f1bf85 | 789 | #endif |
ec4b0518 UD |
790 | if (modifier == 'O') |
791 | goto bad_format; | |
792 | else | |
793 | DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE); | |
28f540f4 RM |
794 | |
795 | case 'y': | |
d68171ed UD |
796 | #if HAVE_STRUCT_ERA_ENTRY |
797 | if (modifier == 'E') | |
798 | { | |
799 | struct era_entry *era = _nl_get_era_entry (tp); | |
800 | if (era) | |
801 | { | |
802 | int delta = tp->tm_year - era->start_date[0]; | |
803 | DO_NUMBER (1, (era->offset | |
804 | + (era->direction == '-' ? -delta : delta))); | |
805 | } | |
806 | } | |
f0f1bf85 | 807 | #endif |
ec4b0518 | 808 | DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100); |
28f540f4 RM |
809 | |
810 | case 'Z': | |
26761c28 | 811 | cpy (zonelen, zone); |
28f540f4 RM |
812 | break; |
813 | ||
f0f1bf85 UD |
814 | case 'z': /* GNU extension. */ |
815 | if (tp->tm_isdst < 0) | |
816 | break; | |
817 | ||
2de99474 | 818 | { |
2de99474 | 819 | int diff; |
f0f1bf85 UD |
820 | #if HAVE_TM_GMTOFF |
821 | diff = tp->tm_gmtoff; | |
822 | #else | |
823 | struct tm gtm; | |
b33f91e9 UD |
824 | struct tm ltm; |
825 | time_t lt; | |
826 | ||
827 | ltm = *tp; | |
828 | lt = mktime (<m); | |
2de99474 | 829 | |
f0f1bf85 | 830 | if (lt == (time_t) -1) |
2de99474 | 831 | { |
f0f1bf85 UD |
832 | /* mktime returns -1 for errors, but -1 is also a |
833 | valid time_t value. Check whether an error really | |
834 | occurred. */ | |
835 | struct tm tm; | |
836 | localtime_r (<, &tm); | |
837 | ||
838 | if ((ltm.tm_sec ^ tm.tm_sec) | |
839 | | (ltm.tm_min ^ tm.tm_min) | |
840 | | (ltm.tm_hour ^ tm.tm_hour) | |
841 | | (ltm.tm_mday ^ tm.tm_mday) | |
842 | | (ltm.tm_mon ^ tm.tm_mon) | |
843 | | (ltm.tm_year ^ tm.tm_year)) | |
844 | break; | |
845 | } | |
dcf0671d | 846 | |
f0f1bf85 UD |
847 | if (! gmtime_r (<, >m)) |
848 | break; | |
dcf0671d | 849 | |
f0f1bf85 UD |
850 | diff = tm_diff (<m, >m); |
851 | #endif | |
2de99474 UD |
852 | |
853 | if (diff < 0) | |
854 | { | |
855 | add (1, *p = '-'); | |
856 | diff = -diff; | |
857 | } | |
858 | else | |
859 | add (1, *p = '+'); | |
860 | ||
f0f1bf85 UD |
861 | diff /= 60; |
862 | DO_NUMBER (4, (diff / 60) * 100 + diff % 60); | |
2de99474 UD |
863 | } |
864 | ||
d68171ed UD |
865 | case '\0': /* GNU extension: % at end of format. */ |
866 | --f; | |
867 | /* Fall through. */ | |
28f540f4 | 868 | default: |
ec4b0518 UD |
869 | /* Unknown format; output the format, including the '%', |
870 | since this is most likely the right thing to do if a | |
871 | multibyte string has been misparsed. */ | |
f0f1bf85 | 872 | bad_format: |
ec4b0518 UD |
873 | { |
874 | int flen; | |
d68171ed | 875 | for (flen = 1; f[1 - flen] != '%'; flen++) |
ec4b0518 UD |
876 | continue; |
877 | cpy (flen, &f[1 - flen]); | |
878 | } | |
28f540f4 RM |
879 | break; |
880 | } | |
881 | } | |
882 | ||
0793d348 | 883 | if (p) |
28f540f4 RM |
884 | *p = '\0'; |
885 | return i; | |
886 | } |