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1 | /* | |
2 | * Copyright (c) 1989, 1993, 1994 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Kim Letkeman. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
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. | |
23 | * | |
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 | |
34 | * SUCH DAMAGE. | |
35 | */ | |
36 | ||
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 | |
41 | * | |
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. | |
48 | * | |
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 | |
56 | */ | |
57 | ||
58 | #include <sys/types.h> | |
59 | ||
60 | #include <ctype.h> | |
61 | #include <getopt.h> | |
62 | #include <stdio.h> | |
63 | #include <stdlib.h> | |
64 | #include <string.h> | |
65 | #include <time.h> | |
66 | #include <unistd.h> | |
67 | #include <errno.h> | |
68 | ||
69 | #include "c.h" | |
70 | #include "closestream.h" | |
71 | #include "colors.h" | |
72 | #include "nls.h" | |
73 | #include "mbsalign.h" | |
74 | #include "strutils.h" | |
75 | ||
76 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) | |
77 | # ifdef HAVE_NCURSES_H | |
78 | # include <ncurses.h> | |
79 | # elif defined(HAVE_NCURSES_NCURSES_H) | |
80 | # include <ncurses/ncurses.h> | |
81 | # endif | |
82 | # include <term.h> | |
83 | ||
84 | static void my_setupterm(const char *term, int fildes, int *errret) | |
85 | { | |
86 | setupterm((char *)term, fildes, errret); | |
87 | } | |
88 | ||
89 | static void my_putstring(char *s) | |
90 | { | |
91 | putp(s); | |
92 | } | |
93 | ||
94 | static const char *my_tgetstr(char *s __attribute__((__unused__)), char *ss) | |
95 | { | |
96 | const char *ret = tigetstr(ss); | |
97 | if (!ret || ret == (char *)-1) | |
98 | return ""; | |
99 | else | |
100 | return ret; | |
101 | } | |
102 | ||
103 | #elif defined(HAVE_LIBTERMCAP) | |
104 | # include <termcap.h> | |
105 | ||
106 | char termbuffer[4096]; | |
107 | char tcbuffer[4096]; | |
108 | char *strbuf = termbuffer; | |
109 | ||
110 | static void my_setupterm(const char *term, int fildes, int *errret) | |
111 | { | |
112 | *errret = tgetent(tcbuffer, term); | |
113 | } | |
114 | ||
115 | static void my_putstring(char *s) | |
116 | { | |
117 | tputs(s, 1, putchar); | |
118 | } | |
119 | ||
120 | static const char *my_tgetstr(char *s, char *ss __attribute__((__unused__))) | |
121 | { | |
122 | const char *ret = tgetstr(s, &strbuf); | |
123 | if (!ret) | |
124 | return ""; | |
125 | else | |
126 | return ret; | |
127 | } | |
128 | ||
129 | #else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */ | |
130 | ||
131 | static void my_putstring(char *s) | |
132 | { | |
133 | fputs(s, stdout); | |
134 | } | |
135 | ||
136 | #endif /* end of LIBTERMCAP / NCURSES */ | |
137 | ||
138 | ||
139 | const char *term=""; | |
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 */ | |
143 | ||
144 | #include "widechar.h" | |
145 | ||
146 | /* allow compile-time define to over-ride default */ | |
147 | #ifndef NUM_MONTHS | |
148 | #define NUM_MONTHS 1 | |
149 | #endif | |
150 | ||
151 | #if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 ) | |
152 | #error NUM_MONTHS must be 1 or 3 | |
153 | #endif | |
154 | ||
155 | enum { | |
156 | SUNDAY = 0, | |
157 | MONDAY, | |
158 | TUESDAY, | |
159 | WEDNESDAY, | |
160 | THURSDAY, | |
161 | FRIDAY, | |
162 | SATURDAY, | |
163 | DAYS_IN_WEEK, | |
164 | NONEDAY | |
165 | }; | |
166 | ||
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 */ | |
172 | ||
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 */ | |
178 | ||
179 | #define SMALLEST_YEAR 1 | |
180 | ||
181 | #define DAY_LEN 3 /* 3 spaces per day */ | |
182 | #define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN) | |
183 | #define HEAD_SEP 2 | |
184 | #define MONTH_COLS 3 /* month columns in year view */ | |
185 | ||
186 | #define J_DAY_LEN 4 /* 4 spaces per day */ | |
187 | #define J_WEEK_LEN (DAYS_IN_WEEK * J_DAY_LEN) | |
188 | #define J_HEAD_SEP 2 | |
189 | #define J_MONTH_COLS 2 | |
190 | ||
191 | #define TODAY_FLAG 0x400 /* flag day for highlighting */ | |
192 | ||
193 | #define FMT_ST_LINES 9 | |
194 | #define FMT_ST_CHARS 300 /* 90 suffices in most locales */ | |
195 | struct fmt_st | |
196 | { | |
197 | char s[FMT_ST_LINES][FMT_ST_CHARS]; | |
198 | }; | |
199 | ||
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}, | |
203 | }; | |
204 | ||
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 | |
222 | }; | |
223 | ||
224 | ||
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]; | |
229 | ||
230 | /* 0 => sunday, 1 => monday */ | |
231 | int weekstart = SUNDAY; | |
232 | int julian; | |
233 | ||
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); | |
249 | ||
250 | int | |
251 | main(int argc, char **argv) { | |
252 | struct tm *local_time; | |
253 | time_t now; | |
254 | int ch, day = 0, month = 0, yflag = 0; | |
255 | long year; | |
256 | int num_months = NUM_MONTHS; | |
257 | int colormode = UL_COLORMODE_AUTO; | |
258 | ||
259 | enum { | |
260 | OPT_COLOR = CHAR_MAX + 1 | |
261 | }; | |
262 | ||
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'}, | |
273 | {NULL, 0, NULL, 0} | |
274 | }; | |
275 | ||
276 | setlocale(LC_ALL, ""); | |
277 | bindtextdomain(PACKAGE, LOCALEDIR); | |
278 | textdomain(PACKAGE); | |
279 | atexit(close_stdout); | |
280 | ||
281 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP) | |
282 | if ((term = getenv("TERM"))) { | |
283 | int ret; | |
284 | my_setupterm(term, STDOUT_FILENO, &ret); | |
285 | if (ret > 0) { | |
286 | Senter = my_tgetstr("so","smso"); | |
287 | Sexit = my_tgetstr("se","rmso"); | |
288 | Slen = strlen(Senter) + strlen(Sexit); | |
289 | } | |
290 | } | |
291 | #endif | |
292 | ||
293 | /* | |
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. | |
298 | */ | |
299 | #if HAVE_DECL__NL_TIME_WEEK_1STDAY | |
300 | /* | |
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: | |
305 | * | |
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 | |
309 | * done | |
310 | * | |
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 | |
316 | */ | |
317 | { | |
318 | int wfd; | |
319 | union { unsigned int word; char *string; } val; | |
320 | val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY); | |
321 | ||
322 | wfd = val.word; | |
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; | |
325 | } | |
326 | #endif | |
327 | ||
328 | while ((ch = getopt_long(argc, argv, "13mjsyVh", longopts, NULL)) != -1) | |
329 | switch(ch) { | |
330 | case '1': | |
331 | num_months = 1; /* default */ | |
332 | break; | |
333 | case '3': | |
334 | num_months = 3; | |
335 | break; | |
336 | case 's': | |
337 | weekstart = SUNDAY; /* default */ | |
338 | break; | |
339 | case 'm': | |
340 | weekstart = MONDAY; | |
341 | break; | |
342 | case 'j': | |
343 | julian = 1; | |
344 | break; | |
345 | case 'y': | |
346 | yflag = 1; | |
347 | break; | |
348 | case OPT_COLOR: | |
349 | if (optarg) | |
350 | colormode = colormode_or_err(optarg, | |
351 | _("unsupported color mode")); | |
352 | break; | |
353 | case 'V': | |
354 | printf(UTIL_LINUX_VERSION); | |
355 | return EXIT_SUCCESS; | |
356 | case 'h': | |
357 | usage(stdout); | |
358 | case '?': | |
359 | default: | |
360 | usage(stderr); | |
361 | } | |
362 | argc -= optind; | |
363 | argv += optind; | |
364 | ||
365 | time(&now); | |
366 | local_time = localtime(&now); | |
367 | ||
368 | switch(argc) { | |
369 | case 3: | |
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); | |
373 | /* FALLTHROUGH */ | |
374 | case 2: | |
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")); | |
378 | /* FALLTHROUGH */ | |
379 | case 1: | |
380 | year = strtol_or_err(*argv++, _("illegal year value")); | |
381 | if (year < SMALLEST_YEAR) | |
382 | errx(EXIT_FAILURE, _("illegal year value: use positive integer")); | |
383 | if (day) { | |
384 | int dm = days_in_month[leap_year(year)][month]; | |
385 | if (day > dm) | |
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; | |
390 | } | |
391 | if (!month) | |
392 | yflag=1; | |
393 | break; | |
394 | case 0: | |
395 | day = local_time->tm_yday + 1; | |
396 | year = local_time->tm_year + 1900; | |
397 | month = local_time->tm_mon + 1; | |
398 | break; | |
399 | default: | |
400 | usage(stderr); | |
401 | } | |
402 | headers_init(julian); | |
403 | ||
404 | if (!colors_init(colormode)) | |
405 | day = 0; | |
406 | ||
407 | if (yflag) | |
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); | |
413 | ||
414 | return EXIT_SUCCESS; | |
415 | } | |
416 | ||
417 | /* leap year -- account for gregorian reformation in 1752 */ | |
418 | static int leap_year(long year) | |
419 | { | |
420 | if (year <= REFORMATION_YEAR) | |
421 | return !(year % 4); | |
422 | else | |
423 | return ( !(year % 4) && (year % 100) ) || !(year % 400); | |
424 | } | |
425 | ||
426 | static void headers_init(int julian) | |
427 | { | |
428 | int i, wd, spaces = julian ? J_DAY_LEN - 1 : DAY_LEN - 1; | |
429 | char *cur_dh = day_headings; | |
430 | ||
431 | for (i = 0; i < DAYS_IN_WEEK; i++) { | |
432 | ssize_t space_left; | |
433 | wd = (i + weekstart) % DAYS_IN_WEEK; | |
434 | ||
435 | if (i) | |
436 | strcat(cur_dh++, " "); | |
437 | space_left = | |
438 | sizeof(day_headings) - (cur_dh - day_headings); | |
439 | if (space_left <= spaces) | |
440 | break; | |
441 | cur_dh += | |
442 | center_str(nl_langinfo(ABDAY_1 + wd), cur_dh, | |
443 | space_left, spaces); | |
444 | } | |
445 | ||
446 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
447 | full_month[i] = nl_langinfo(MON_1 + i); | |
448 | } | |
449 | ||
450 | static int | |
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; | |
455 | int pos = 0; | |
456 | ||
457 | day_array(day, month, year, days); | |
458 | ||
459 | /* | |
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. | |
464 | */ | |
465 | if (header_hint < 0) | |
466 | header_hint = two_header_lines(month, year); | |
467 | if (header_hint) { | |
468 | snprintf(lineout, sizeof(lineout), _("%s"), full_month[month - 1]); | |
469 | center_str(lineout, out->s[pos], ARRAY_SIZE(out->s[pos]), width); | |
470 | pos++; | |
471 | snprintf(lineout, sizeof(lineout), _("%lu"), year); | |
472 | center_str(lineout, out->s[pos], ARRAY_SIZE(out->s[pos]), width); | |
473 | pos++; | |
474 | } else { | |
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); | |
478 | pos++; | |
479 | } | |
480 | ||
481 | snprintf(out->s[pos++], FMT_ST_CHARS, "%s", day_headings); | |
482 | for (row = 0; row < DAYS_IN_WEEK - 1; row++) { | |
483 | int has_hl = 0; | |
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)) | |
487 | has_hl = 1; | |
488 | p = ascii_day(p, xd); | |
489 | } | |
490 | *p = '\0'; | |
491 | snprintf(out->s[row+pos], FMT_ST_CHARS, "%s", lineout); | |
492 | if (has_hl) | |
493 | Hrow = out->s[row+pos]; | |
494 | } | |
495 | pos += row; | |
496 | return pos; | |
497 | } | |
498 | ||
499 | static void | |
500 | monthly(int day, int month, long year) { | |
501 | int i, rows; | |
502 | struct fmt_st out; | |
503 | ||
504 | rows = do_monthly(day, month, year, &out, -1); | |
505 | for (i = 0; i < rows; i++) { | |
506 | my_putstring(out.s[i]); | |
507 | my_putstring("\n"); | |
508 | } | |
509 | } | |
510 | ||
511 | static int | |
512 | two_header_lines(int month, long year) | |
513 | { | |
514 | char lineout[FMT_ST_CHARS]; | |
515 | size_t width = (julian ? J_WEEK_LEN : WEEK_LEN) - 1; | |
516 | size_t len; | |
517 | snprintf(lineout, sizeof(lineout), "%lu", year); | |
518 | len = strlen(lineout); | |
519 | len += strlen(full_month[month - 1]) + 1; | |
520 | if (width < len) | |
521 | return 1; | |
522 | return 0; | |
523 | } | |
524 | ||
525 | static void | |
526 | monthly3(int day, int month, long year) { | |
527 | char lineout[FMT_ST_CHARS]; | |
528 | int i; | |
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; | |
535 | ||
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)); | |
539 | if (month == 1) { | |
540 | prev_month = MONTHS_IN_YEAR; | |
541 | prev_year = year - 1; | |
542 | } else { | |
543 | prev_month = month - 1; | |
544 | prev_year = year; | |
545 | } | |
546 | if (month == MONTHS_IN_YEAR) { | |
547 | next_month = 1; | |
548 | next_year = year + 1; | |
549 | } else { | |
550 | next_month = month + 1; | |
551 | next_year = year; | |
552 | } | |
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); | |
556 | if (0 < two_lines) | |
557 | rows = FMT_ST_LINES; | |
558 | else | |
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); | |
563 | ||
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); | |
569 | } | |
570 | for (i = two_lines ? 3 : 2; i < rows; i++) { | |
571 | int w1, w2, w3; | |
572 | w1 = w2 = w3 = width; | |
573 | ||
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); | |
579 | #endif | |
580 | snprintf(lineout, sizeof(lineout), "%-*s %-*s %-*s\n", | |
581 | w1, out_prev.s[i], | |
582 | w2, out_curm.s[i], | |
583 | w3, out_next.s[i]); | |
584 | ||
585 | my_putstring(lineout); | |
586 | } | |
587 | } | |
588 | ||
589 | static void | |
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]; | |
595 | ||
596 | if (julian) { | |
597 | maxrow = J_MONTH_COLS; | |
598 | sep_len = J_HEAD_SEP; | |
599 | week_len = J_WEEK_LEN; | |
600 | } else { | |
601 | maxrow = MONTH_COLS; | |
602 | sep_len = HEAD_SEP; | |
603 | week_len = WEEK_LEN; | |
604 | } | |
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"); | |
611 | ||
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); | |
616 | if (julian) { | |
617 | center(full_month[month + 1], week_len - 1, 0); | |
618 | } else { | |
619 | center(full_month[month + 1], week_len - 1, sep_len + 1); | |
620 | center(full_month[month + 2], week_len - 1, 0); | |
621 | } | |
622 | if (julian) | |
623 | snprintf(lineout, sizeof(lineout), | |
624 | "\n%s%*s %s\n", day_headings, sep_len, "", day_headings); | |
625 | else | |
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++) { | |
631 | p = lineout; | |
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, " "); | |
637 | } | |
638 | *p = '\0'; | |
639 | my_putstring(lineout); | |
640 | my_putstring("\n"); | |
641 | } | |
642 | } | |
643 | my_putstring("\n"); | |
644 | } | |
645 | ||
646 | /* | |
647 | * day_array -- | |
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. | |
652 | */ | |
653 | static void | |
654 | day_array(int day, int month, long year, int *days) { | |
655 | int julday, daynum, dw, dm; | |
656 | int *sep1752; | |
657 | ||
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; | |
666 | return; | |
667 | } | |
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; | |
672 | while (dm--) { | |
673 | days[dw] = daynum++; | |
674 | if (julday++ == day) | |
675 | days[dw] |= TODAY_FLAG; | |
676 | dw++; | |
677 | } | |
678 | } | |
679 | ||
680 | /* | |
681 | * day_in_year -- | |
682 | * return the 1 based day number within the year | |
683 | */ | |
684 | static int | |
685 | day_in_year(int day, int month, long year) { | |
686 | int i, leap; | |
687 | ||
688 | leap = leap_year(year); | |
689 | for (i = 1; i < month; i++) | |
690 | day += days_in_month[leap][i]; | |
691 | return day; | |
692 | } | |
693 | ||
694 | /* | |
695 | * day_in_week | |
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. | |
700 | */ | |
701 | static int | |
702 | day_in_week(int d, int m, int y) | |
703 | { | |
704 | static const int reform[] = { | |
705 | SUNDAY, WEDNESDAY, TUESDAY, FRIDAY, SUNDAY, WEDNESDAY, | |
706 | FRIDAY, MONDAY, THURSDAY, SATURDAY, TUESDAY, THURSDAY | |
707 | }; | |
708 | static const int old[] = { | |
709 | FRIDAY, MONDAY, SUNDAY, WEDNESDAY, FRIDAY, MONDAY, | |
710 | WEDNESDAY, SATURDAY, TUESDAY, THURSDAY, SUNDAY, TUESDAY | |
711 | }; | |
712 | if (y != 1753) | |
713 | y -= m < 3; | |
714 | else | |
715 | y -= (m < 3) + 14; | |
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] + | |
718 | d) % 7; | |
719 | if (y < 1752 || (y == 1752 && m < 9) || (y == 1752 && m == 9 && d < 3)) | |
720 | return (y + y / 4 + old[m - 1] + d) % 7; | |
721 | return NONEDAY; | |
722 | } | |
723 | ||
724 | static char * | |
725 | ascii_day(char *p, int day) { | |
726 | int display, val; | |
727 | int highlight = 0; | |
728 | static char *aday[] = { | |
729 | "", | |
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", | |
734 | "29", "30", "31", | |
735 | }; | |
736 | ||
737 | if (day == SPACE) { | |
738 | int len = julian ? J_DAY_LEN : DAY_LEN; | |
739 | memset(p, ' ', len); | |
740 | return p+len; | |
741 | } | |
742 | if (day & TODAY_FLAG) { | |
743 | day &= ~TODAY_FLAG; | |
744 | p += sprintf(p, "%s", Senter); | |
745 | highlight = 1; | |
746 | } | |
747 | if (julian) { | |
748 | if ((val = day / 100)) { | |
749 | day %= 100; | |
750 | *p++ = val + '0'; | |
751 | display = 1; | |
752 | } else { | |
753 | *p++ = ' '; | |
754 | display = 0; | |
755 | } | |
756 | val = day / 10; | |
757 | if (val || display) | |
758 | *p++ = val + '0'; | |
759 | else | |
760 | *p++ = ' '; | |
761 | *p++ = day % 10 + '0'; | |
762 | } else { | |
763 | *p++ = aday[day][0]; | |
764 | *p++ = aday[day][1]; | |
765 | } | |
766 | if (highlight) | |
767 | p += sprintf(p, "%s", Sexit); | |
768 | *p++ = ' '; | |
769 | return p; | |
770 | } | |
771 | ||
772 | /* | |
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. | |
776 | */ | |
777 | static int | |
778 | center_str(const char* src, char* dest, size_t dest_size, size_t width) | |
779 | { | |
780 | return mbsalign(src, dest, dest_size, &width, | |
781 | MBS_ALIGN_CENTER, MBA_UNIBYTE_FALLBACK); | |
782 | } | |
783 | ||
784 | static void | |
785 | center(const char *str, size_t len, int separate) | |
786 | { | |
787 | char lineout[FMT_ST_CHARS]; | |
788 | ||
789 | center_str(str, lineout, ARRAY_SIZE(lineout), len); | |
790 | my_putstring(lineout); | |
791 | ||
792 | if (separate) { | |
793 | snprintf(lineout, sizeof(lineout), "%*s", separate, ""); | |
794 | my_putstring(lineout); | |
795 | } | |
796 | } | |
797 | ||
798 | static void __attribute__ ((__noreturn__)) usage(FILE * out) | |
799 | { | |
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); | |
815 | } |