2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 /* 1999-02-01 Jean-Francois Bignolles: added option '-m' to display
38 * monday as the first day of the week.
39 * 1999-02-22 Arkadiusz MiĆkiewicz <misiek@pld.ORG.PL>
40 * - added Native Language Support
42 * 2000-09-01 Michael Charles Pruznick <dummy@netwiz.net>
43 * Added "-3" option to print prev/next month with current.
44 * Added over-ridable default NUM_MONTHS and "-1" option to
45 * get traditional output when -3 is the default. I hope that
46 * enough people will like -3 as the default that one day the
47 * product can be shipped that way.
49 * 2001-05-07 Pablo Saratxaga <pablo@mandrakesoft.com>
50 * Fixed the bugs with multi-byte charset (zg: cjk, utf-8)
51 * displaying. made the 'month year' ("%s %d") header translatable
52 * so it can be adapted to conventions used by different languages
53 * added support to read "first_weekday" locale information
54 * still to do: support for 'cal_direction' (will require a major
55 * rewrite of the displaying) and proper handling of RTL scripts
58 #include <sys/types.h>
70 #include "closestream.h"
76 #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW)
77 # ifdef HAVE_NCURSES_H
79 # elif defined(HAVE_NCURSES_NCURSES_H)
80 # include <ncurses/ncurses.h>
84 static void my_setupterm(const char *term
, int fildes
, int *errret
)
86 setupterm((char *)term
, fildes
, errret
);
89 static void my_putstring(char *s
)
94 static const char *my_tgetstr(char *s
__attribute__((__unused__
)), char *ss
)
96 const char *ret
= tigetstr(ss
);
97 if (!ret
|| ret
== (char *)-1)
103 #elif defined(HAVE_LIBTERMCAP)
104 # include <termcap.h>
106 char termbuffer
[4096];
108 char *strbuf
= termbuffer
;
110 static void my_setupterm(const char *term
, int fildes
, int *errret
)
112 *errret
= tgetent(tcbuffer
, term
);
115 static void my_putstring(char *s
)
117 tputs(s
, 1, putchar
);
120 static const char *my_tgetstr(char *s
, char *ss
__attribute__((__unused__
)))
122 const char *ret
= tgetstr(s
, &strbuf
);
129 #else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */
131 static void my_putstring(char *s
)
136 #endif /* end of LIBTERMCAP / NCURSES */
140 const char *Senter
="", *Sexit
="";/* enter and exit standout mode */
141 int Slen
; /* strlen of Senter+Sexit */
142 char *Hrow
; /* pointer to highlighted row in month */
144 #include "widechar.h"
146 /* allow compile-time define to over-ride default */
151 #if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 )
152 #error NUM_MONTHS must be 1 or 3
167 #define FIRST_WEEKDAY SATURDAY /* Jan 1st, 1 was a Saturday */
168 #define REFORMATION_YEAR 1752 /* Signed-off-by: Lord Chesterfield */
169 #define REFORMATION_MONTH 9 /* September */
170 #define FIRST_MISSING_DAY 639799 /* 3 Sep 1752 */
171 #define NUMBER_MISSING_DAYS 11 /* 11 day correction */
173 #define DAYS_IN_YEAR 365 /* the common case, leap years are calculated */
174 #define MONTHS_IN_YEAR 12
175 #define DAYS_IN_MONTH 31
176 #define MAXDAYS 42 /* slots in a month array */
177 #define SPACE -1 /* used in day array */
179 #define SMALLEST_YEAR 1
181 #define DAY_LEN 3 /* 3 spaces per day */
182 #define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN)
184 #define MONTH_COLS 3 /* month columns in year view */
186 #define J_DAY_LEN 4 /* 4 spaces per day */
187 #define J_WEEK_LEN (DAYS_IN_WEEK * J_DAY_LEN)
189 #define J_MONTH_COLS 2
191 #define TODAY_FLAG 0x400 /* flag day for highlighting */
193 #define FMT_ST_LINES 9
194 #define FMT_ST_CHARS 300 /* 90 suffices in most locales */
197 char s
[FMT_ST_LINES
][FMT_ST_CHARS
];
200 static int days_in_month
[2][13] = {
201 {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
202 {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
205 /* September 1752 is special, and has static assignments for both date
206 * and Julian representations. */
207 int d_sep1752
[MAXDAYS
/ 2] = {
208 SPACE
, SPACE
, 1, 2, 14, 15, 16,
209 17, 18, 19, 20, 21, 22, 23,
210 24, 25, 26, 27, 28, 29, 30
211 }, j_sep1752
[MAXDAYS
/ 2] = {
212 SPACE
, SPACE
, 245, 246, 258, 259, 260,
213 261, 262, 263, 264, 265, 266, 267,
214 268, 269, 270, 271, 272, 273, 274
215 }, empty
[MAXDAYS
] = {
216 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
,
217 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
,
218 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
,
219 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
,
220 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
,
221 SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
, SPACE
225 /* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */
226 char day_headings
[J_WEEK_LEN
* 6 + 1];
227 /* weekstart = 1 => " M Tu W Th F S S " */
228 const char *full_month
[MONTHS_IN_YEAR
];
230 /* 0 => sunday, 1 => monday */
231 int weekstart
= SUNDAY
;
234 /* function prototypes */
235 static int leap_year(long year
);
236 static char * ascii_day(char *, int);
237 static int center_str(const char* src
, char* dest
, size_t dest_size
, size_t width
);
238 static void center(const char *, size_t, int);
239 static void day_array(int, int, long, int *);
240 static int day_in_week(int, int, int);
241 static int day_in_year(int, int, long);
242 static void yearly(int, long, int);
243 static int do_monthly(int, int, long, struct fmt_st
*, int);
244 static void monthly(int, int, long);
245 static int two_header_lines(int month
, long year
);
246 static void monthly3(int, int, long);
247 static void __attribute__ ((__noreturn__
)) usage(FILE * out
);
248 static void headers_init(int);
251 main(int argc
, char **argv
) {
252 struct tm
*local_time
;
254 int ch
, day
= 0, month
= 0, yflag
= 0;
256 int num_months
= NUM_MONTHS
;
257 int colormode
= UL_COLORMODE_AUTO
;
260 OPT_COLOR
= CHAR_MAX
+ 1
263 static const struct option longopts
[] = {
264 {"one", no_argument
, NULL
, '1'},
265 {"three", no_argument
, NULL
, '3'},
266 {"sunday", no_argument
, NULL
, 's'},
267 {"monday", no_argument
, NULL
, 'm'},
268 {"julian", no_argument
, NULL
, 'j'},
269 {"year", no_argument
, NULL
, 'y'},
270 {"color", optional_argument
, NULL
, OPT_COLOR
},
271 {"version", no_argument
, NULL
, 'V'},
272 {"help", no_argument
, NULL
, 'h'},
276 setlocale(LC_ALL
, "");
277 bindtextdomain(PACKAGE
, LOCALEDIR
);
279 atexit(close_stdout
);
281 #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
282 if ((term
= getenv("TERM"))) {
284 my_setupterm(term
, STDOUT_FILENO
, &ret
);
286 Senter
= my_tgetstr("so","smso");
287 Sexit
= my_tgetstr("se","rmso");
288 Slen
= strlen(Senter
) + strlen(Sexit
);
294 * The traditional Unix cal utility starts the week at Sunday,
295 * while ISO 8601 starts at Monday. We read the start day from
296 * the locale database, which can be overridden with the
297 * -s (Sunday) or -m (Monday) options.
299 #if HAVE_DECL__NL_TIME_WEEK_1STDAY
301 * You need to use 2 locale variables to get the first day of the week.
302 * This is needed to support first_weekday=2 and first_workday=1 for
303 * the rare case where working days span across 2 weeks.
304 * This shell script shows the combinations and calculations involved:
306 * for LANG in en_US ru_RU fr_FR csb_PL POSIX; do
307 * printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday)
308 * date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w
311 * en_US: 19971130 + 1 -1 = 0 #0 = sunday
312 * ru_RU: 19971130 + 2 -1 = 1
313 * fr_FR: 19971201 + 1 -1 = 1
314 * csb_PL: 19971201 + 2 -1 = 2
315 * POSIX: 19971201 + 7 -1 = 0
319 union { unsigned int word
; char *string
; } val
;
320 val
.string
= nl_langinfo(_NL_TIME_WEEK_1STDAY
);
323 wfd
= day_in_week(wfd
% 100, (wfd
/ 100) % 100, wfd
/ (100 * 100));
324 weekstart
= (wfd
+ *nl_langinfo(_NL_TIME_FIRST_WEEKDAY
) - 1) % DAYS_IN_WEEK
;
328 while ((ch
= getopt_long(argc
, argv
, "13mjsyVh", longopts
, NULL
)) != -1)
331 num_months
= 1; /* default */
337 weekstart
= SUNDAY
; /* default */
350 colormode
= colormode_or_err(optarg
,
351 _("unsupported color mode"));
354 printf(UTIL_LINUX_VERSION
);
366 local_time
= localtime(&now
);
370 day
= strtos32_or_err(*argv
++, _("illegal day value"));
371 if (day
< 1 || DAYS_IN_MONTH
< day
)
372 errx(EXIT_FAILURE
, _("illegal day value: use 1-%d"), DAYS_IN_MONTH
);
375 month
= strtos32_or_err(*argv
++, _("illegal month value: use 1-12"));
376 if (month
< 1 || MONTHS_IN_YEAR
< month
)
377 errx(EXIT_FAILURE
, _("illegal month value: use 1-12"));
380 year
= strtol_or_err(*argv
++, _("illegal year value"));
381 if (year
< SMALLEST_YEAR
)
382 errx(EXIT_FAILURE
, _("illegal year value: use positive integer"));
384 int dm
= days_in_month
[leap_year(year
)][month
];
386 errx(EXIT_FAILURE
, _("illegal day value: use 1-%d"), dm
);
387 day
= day_in_year(day
, month
, year
);
388 } else if ((long) (local_time
->tm_year
+ 1900) == year
) {
389 day
= local_time
->tm_yday
+ 1;
395 day
= local_time
->tm_yday
+ 1;
396 year
= local_time
->tm_year
+ 1900;
397 month
= local_time
->tm_mon
+ 1;
402 headers_init(julian
);
404 if (!colors_init(colormode
))
408 yearly(day
, year
, julian
);
409 else if (num_months
== 1)
410 monthly(day
, month
, year
);
411 else if (num_months
== 3)
412 monthly3(day
, month
, year
);
417 /* leap year -- account for gregorian reformation in 1752 */
418 static int leap_year(long year
)
420 if (year
<= REFORMATION_YEAR
)
423 return ( !(year
% 4) && (year
% 100) ) || !(year
% 400);
426 static void headers_init(int julian
)
428 int i
, wd
, spaces
= julian
? J_DAY_LEN
- 1 : DAY_LEN
- 1;
429 char *cur_dh
= day_headings
;
431 for (i
= 0; i
< DAYS_IN_WEEK
; i
++) {
433 wd
= (i
+ weekstart
) % DAYS_IN_WEEK
;
436 strcat(cur_dh
++, " ");
438 sizeof(day_headings
) - (cur_dh
- day_headings
);
439 if (space_left
<= spaces
)
442 center_str(nl_langinfo(ABDAY_1
+ wd
), cur_dh
,
446 for (i
= 0; i
< MONTHS_IN_YEAR
; i
++)
447 full_month
[i
] = nl_langinfo(MON_1
+ i
);
451 do_monthly(int day
, int month
, long year
, struct fmt_st
*out
, int header_hint
) {
452 int col
, row
, days
[MAXDAYS
];
453 char *p
, lineout
[FMT_ST_CHARS
];
454 size_t width
= (julian
? J_WEEK_LEN
: WEEK_LEN
) - 1;
457 day_array(day
, month
, year
, days
);
460 * %s is the month name, %d the year number.
461 * you can change the order and/or add something here; eg for
462 * Basque the translation should be: "%2$dko %1$s", and
463 * the Vietnamese should be "%s na(m %d", etc.
466 header_hint
= two_header_lines(month
, year
);
468 snprintf(lineout
, sizeof(lineout
), _("%s"), full_month
[month
- 1]);
469 center_str(lineout
, out
->s
[pos
], ARRAY_SIZE(out
->s
[pos
]), width
);
471 snprintf(lineout
, sizeof(lineout
), _("%lu"), year
);
472 center_str(lineout
, out
->s
[pos
], ARRAY_SIZE(out
->s
[pos
]), width
);
475 snprintf(lineout
, sizeof(lineout
), _("%s %lu"),
476 full_month
[month
- 1], year
);
477 center_str(lineout
, out
->s
[pos
], ARRAY_SIZE(out
->s
[pos
]), width
);
481 snprintf(out
->s
[pos
++], FMT_ST_CHARS
, "%s", day_headings
);
482 for (row
= 0; row
< DAYS_IN_WEEK
- 1; row
++) {
484 for (col
= 0, p
= lineout
; col
< DAYS_IN_WEEK
; col
++) {
485 int xd
= days
[row
* DAYS_IN_WEEK
+ col
];
486 if (xd
!= SPACE
&& (xd
& TODAY_FLAG
))
488 p
= ascii_day(p
, xd
);
491 snprintf(out
->s
[row
+pos
], FMT_ST_CHARS
, "%s", lineout
);
493 Hrow
= out
->s
[row
+pos
];
500 monthly(int day
, int month
, long year
) {
504 rows
= do_monthly(day
, month
, year
, &out
, -1);
505 for (i
= 0; i
< rows
; i
++) {
506 my_putstring(out
.s
[i
]);
512 two_header_lines(int month
, long year
)
514 char lineout
[FMT_ST_CHARS
];
515 size_t width
= (julian
? J_WEEK_LEN
: WEEK_LEN
) - 1;
517 snprintf(lineout
, sizeof(lineout
), "%lu", year
);
518 len
= strlen(lineout
);
519 len
+= strlen(full_month
[month
- 1]) + 1;
526 monthly3(int day
, int month
, long year
) {
527 char lineout
[FMT_ST_CHARS
];
529 int width
, rows
, two_lines
;
530 struct fmt_st out_prev
;
531 struct fmt_st out_curm
;
532 struct fmt_st out_next
;
533 int prev_month
, next_month
;
534 long prev_year
, next_year
;
536 memset(&out_prev
, 0, sizeof(struct fmt_st
));
537 memset(&out_curm
, 0, sizeof(struct fmt_st
));
538 memset(&out_next
, 0, sizeof(struct fmt_st
));
540 prev_month
= MONTHS_IN_YEAR
;
541 prev_year
= year
- 1;
543 prev_month
= month
- 1;
546 if (month
== MONTHS_IN_YEAR
) {
548 next_year
= year
+ 1;
550 next_month
= month
+ 1;
553 two_lines
= two_header_lines(prev_month
, prev_year
);
554 two_lines
+= two_header_lines(month
, year
);
555 two_lines
+= two_header_lines(next_month
, next_year
);
559 rows
= FMT_ST_LINES
- 1;
560 do_monthly(day
, prev_month
, prev_year
, &out_prev
, two_lines
);
561 do_monthly(day
, month
, year
, &out_curm
, two_lines
);
562 do_monthly(day
, next_month
, next_year
, &out_next
, two_lines
);
564 width
= (julian
? J_WEEK_LEN
: WEEK_LEN
) -1;
565 for (i
= 0; i
< (two_lines
? 3 : 2); i
++) {
566 snprintf(lineout
, sizeof(lineout
),
567 "%s %s %s\n", out_prev
.s
[i
], out_curm
.s
[i
], out_next
.s
[i
]);
568 my_putstring(lineout
);
570 for (i
= two_lines
? 3 : 2; i
< rows
; i
++) {
572 w1
= w2
= w3
= width
;
574 #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
575 /* adjust width to allow for non printable characters */
576 w1
+= (out_prev
.s
[i
] == Hrow
? Slen
: 0);
577 w2
+= (out_curm
.s
[i
] == Hrow
? Slen
: 0);
578 w3
+= (out_next
.s
[i
] == Hrow
? Slen
: 0);
580 snprintf(lineout
, sizeof(lineout
), "%-*s %-*s %-*s\n",
585 my_putstring(lineout
);
590 yearly(int day
, long year
, int julian
) {
591 int col
, *dp
, i
, month
, row
, which_cal
;
592 int maxrow
, sep_len
, week_len
;
593 int days
[MONTHS_IN_YEAR
][MAXDAYS
];
594 char *p
, lineout
[100];
597 maxrow
= J_MONTH_COLS
;
598 sep_len
= J_HEAD_SEP
;
599 week_len
= J_WEEK_LEN
;
605 snprintf(lineout
, sizeof(lineout
), "%lu", year
);
606 /* 2013-04-28: The -1 near sep_len makes year header to be
607 * aligned exactly how it has been aligned for long time, but it
608 * is unexplainable. */
609 center(lineout
, (week_len
+ sep_len
) * maxrow
- sep_len
- 1, 0);
610 my_putstring("\n\n");
612 for (i
= 0; i
< MONTHS_IN_YEAR
; i
++)
613 day_array(day
, i
+ 1, year
, days
[i
]);
614 for (month
= 0; month
< MONTHS_IN_YEAR
; month
+= maxrow
) {
615 center(full_month
[month
], week_len
- 1, sep_len
+ 1);
617 center(full_month
[month
+ 1], week_len
- 1, 0);
619 center(full_month
[month
+ 1], week_len
- 1, sep_len
+ 1);
620 center(full_month
[month
+ 2], week_len
- 1, 0);
623 snprintf(lineout
, sizeof(lineout
),
624 "\n%s%*s %s\n", day_headings
, sep_len
, "", day_headings
);
626 snprintf(lineout
, sizeof(lineout
),
627 "\n%s%*s %s%*s %s\n", day_headings
, sep_len
,
628 "", day_headings
, sep_len
, "", day_headings
);
629 my_putstring(lineout
);
630 for (row
= 0; row
< DAYS_IN_WEEK
- 1; row
++) {
632 for (which_cal
= 0; which_cal
< maxrow
; which_cal
++) {
633 dp
= &days
[month
+ which_cal
][row
* DAYS_IN_WEEK
];
634 for (col
= 0; col
< DAYS_IN_WEEK
; col
++)
635 p
= ascii_day(p
, *dp
++);
636 p
+= sprintf(p
, " ");
639 my_putstring(lineout
);
648 * Fill in an array of 42 integers with a calendar. Assume for a moment
649 * that you took the (maximum) 6 rows in a calendar and stretched them
650 * out end to end. You would have 42 numbers or spaces. This routine
651 * builds that array for any month from Jan. 1 through Dec. 9999.
654 day_array(int day
, int month
, long year
, int *days
) {
655 int julday
, daynum
, dw
, dm
;
658 memcpy(days
, empty
, MAXDAYS
* sizeof(int));
659 if (year
== REFORMATION_YEAR
&& month
== REFORMATION_MONTH
) {
660 sep1752
= julian
? j_sep1752
: d_sep1752
;
661 memcpy(days
, sep1752
+ weekstart
,
662 ((MAXDAYS
/ 2) - weekstart
) * sizeof(int));
663 for (dm
= 0; dm
< MAXDAYS
/ 2; dm
++)
664 if (j_sep1752
[dm
] == day
)
665 days
[dm
] |= TODAY_FLAG
;
668 dm
= days_in_month
[leap_year(year
)][month
];
669 dw
= (day_in_week(1, month
, year
) - weekstart
+ DAYS_IN_WEEK
) % DAYS_IN_WEEK
;
670 julday
= day_in_year(1, month
, year
);
671 daynum
= julian
? julday
: 1;
675 days
[dw
] |= TODAY_FLAG
;
682 * return the 1 based day number within the year
685 day_in_year(int day
, int month
, long year
) {
688 leap
= leap_year(year
);
689 for (i
= 1; i
< month
; i
++)
690 day
+= days_in_month
[leap
][i
];
696 * return the 0 based day number for any date from 1 Jan. 1 to
697 * 31 Dec. 9999. Assumes the Gregorian reformation eliminates
698 * 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday
699 * during the period of 11 days.
702 day_in_week(int d
, int m
, int y
)
704 static const int reform
[] = {
705 SUNDAY
, WEDNESDAY
, TUESDAY
, FRIDAY
, SUNDAY
, WEDNESDAY
,
706 FRIDAY
, MONDAY
, THURSDAY
, SATURDAY
, TUESDAY
, THURSDAY
708 static const int old
[] = {
709 FRIDAY
, MONDAY
, SUNDAY
, WEDNESDAY
, FRIDAY
, MONDAY
,
710 WEDNESDAY
, SATURDAY
, TUESDAY
, THURSDAY
, SUNDAY
, TUESDAY
716 if (1752 < y
|| (y
== 1752 && 9 < m
) || (y
== 1752 && m
== 9 && 13 < d
))
717 return (y
+ (y
/ 4) - (y
/ 100) + (y
/ 400) + reform
[m
- 1] +
719 if (y
< 1752 || (y
== 1752 && m
< 9) || (y
== 1752 && m
== 9 && d
< 3))
720 return (y
+ y
/ 4 + old
[m
- 1] + d
) % 7;
725 ascii_day(char *p
, int day
) {
728 static char *aday
[] = {
730 " 1", " 2", " 3", " 4", " 5", " 6", " 7",
731 " 8", " 9", "10", "11", "12", "13", "14",
732 "15", "16", "17", "18", "19", "20", "21",
733 "22", "23", "24", "25", "26", "27", "28",
738 int len
= julian
? J_DAY_LEN
: DAY_LEN
;
742 if (day
& TODAY_FLAG
) {
744 p
+= sprintf(p
, "%s", Senter
);
748 if ((val
= day
/ 100)) {
761 *p
++ = day
% 10 + '0';
767 p
+= sprintf(p
, "%s", Sexit
);
773 * Center string, handling multibyte characters appropriately.
774 * In addition if the string is too large for the width it's truncated.
775 * The number of trailing spaces may be 1 less than the number of leading spaces.
778 center_str(const char* src
, char* dest
, size_t dest_size
, size_t width
)
780 return mbsalign(src
, dest
, dest_size
, &width
,
781 MBS_ALIGN_CENTER
, MBA_UNIBYTE_FALLBACK
);
785 center(const char *str
, size_t len
, int separate
)
787 char lineout
[FMT_ST_CHARS
];
789 center_str(str
, lineout
, ARRAY_SIZE(lineout
), len
);
790 my_putstring(lineout
);
793 snprintf(lineout
, sizeof(lineout
), "%*s", separate
, "");
794 my_putstring(lineout
);
798 static void __attribute__ ((__noreturn__
)) usage(FILE * out
)
800 fputs(USAGE_HEADER
, out
);
801 fprintf(out
, _(" %s [options] [[[day] month] year]\n"), program_invocation_short_name
);
802 fputs(USAGE_OPTIONS
, out
);
803 fputs(_(" -1, --one show only current month (default)\n"), out
);
804 fputs(_(" -3, --three show previous, current and next month\n"), out
);
805 fputs(_(" -s, --sunday Sunday as first day of week\n"), out
);
806 fputs(_(" -m, --monday Monday as first day of week\n"), out
);
807 fputs(_(" -j, --julian output Julian dates\n"), out
);
808 fputs(_(" -y, --year show whole current year\n"), out
);
809 fputs(_(" --color[=<when>] colorize messages (auto, always or never)\n"), out
);
810 fputs(USAGE_SEPARATOR
, out
);
811 fputs(USAGE_HELP
, out
);
812 fputs(USAGE_VERSION
, out
);
813 fprintf(out
, USAGE_MAN_TAIL("cal(1)"));
814 exit(out
== stderr
? EXIT_FAILURE
: EXIT_SUCCESS
);