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Commit | Line | Data |
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6dbe3af9 KZ |
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 | ||
5c36a0eb | 37 | /* 1999-02-01 Jean-Francois Bignolles: added option '-m' to display |
d162fcb5 | 38 | * monday as the first day of the week. |
b50945d4 | 39 | * 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL> |
7eda085c KZ |
40 | * - added Native Language Support |
41 | * | |
d162fcb5 | 42 | * 2000-09-01 Michael Charles Pruznick <dummy@netwiz.net> |
66ee8158 KZ |
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. | |
e8f26419 KZ |
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 | |
5c36a0eb KZ |
56 | */ |
57 | ||
6dbe3af9 KZ |
58 | #include <sys/types.h> |
59 | ||
60 | #include <ctype.h> | |
022df321 | 61 | #include <getopt.h> |
6dbe3af9 KZ |
62 | #include <stdio.h> |
63 | #include <stdlib.h> | |
64 | #include <string.h> | |
65 | #include <time.h> | |
66 | #include <unistd.h> | |
37d6897f | 67 | #include <errno.h> |
17282538 KZ |
68 | |
69 | #include "c.h" | |
c05a80ca | 70 | #include "closestream.h" |
7b353df2 | 71 | #include "colors.h" |
7eda085c | 72 | #include "nls.h" |
104b92f8 | 73 | #include "mbsalign.h" |
022df321 | 74 | #include "strutils.h" |
726f69e2 | 75 | |
310170b8 | 76 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
4aefe5e8 SK |
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); | |
d162fcb5 KZ |
87 | } |
88 | ||
4aefe5e8 SK |
89 | static void my_putstring(char *s) |
90 | { | |
91 | putp(s); | |
d162fcb5 KZ |
92 | } |
93 | ||
4aefe5e8 SK |
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 ""; | |
d4be073d KZ |
99 | |
100 | return ret; | |
d162fcb5 KZ |
101 | } |
102 | ||
48d7b13a | 103 | #elif defined(HAVE_LIBTERMCAP) |
4aefe5e8 | 104 | # include <termcap.h> |
d162fcb5 | 105 | |
d4be073d KZ |
106 | static char termbuffer[4096]; |
107 | static char tcbuffer[4096]; | |
108 | static char *strbuf = termbuffer; | |
d162fcb5 | 109 | |
7bd3336f | 110 | static void my_setupterm(const char *term, int fildes __attribute__((__unused__)), int *errret) |
4aefe5e8 SK |
111 | { |
112 | *errret = tgetent(tcbuffer, term); | |
d162fcb5 KZ |
113 | } |
114 | ||
4aefe5e8 SK |
115 | static void my_putstring(char *s) |
116 | { | |
117 | tputs(s, 1, putchar); | |
d162fcb5 KZ |
118 | } |
119 | ||
4aefe5e8 SK |
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 ""; | |
d4be073d KZ |
125 | |
126 | return ret; | |
d162fcb5 KZ |
127 | } |
128 | ||
4aefe5e8 | 129 | #else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */ |
f4061938 | 130 | |
4aefe5e8 SK |
131 | static void my_putstring(char *s) |
132 | { | |
133 | fputs(s, stdout); | |
f4061938 KZ |
134 | } |
135 | ||
4aefe5e8 | 136 | #endif /* end of LIBTERMCAP / NCURSES */ |
f4061938 | 137 | |
a814f0bb | 138 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP) |
d4be073d | 139 | static const char *term=""; |
d4be073d | 140 | static int Slen; /* strlen of Senter+Sexit */ |
a814f0bb KZ |
141 | #endif |
142 | ||
143 | static const char *Senter="", *Sexit="";/* enter and exit standout mode */ | |
d162fcb5 | 144 | |
e8f26419 | 145 | #include "widechar.h" |
95f1bdee | 146 | |
66ee8158 KZ |
147 | /* allow compile-time define to over-ride default */ |
148 | #ifndef NUM_MONTHS | |
d4be073d | 149 | # define NUM_MONTHS 1 |
66ee8158 KZ |
150 | #endif |
151 | ||
152 | #if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 ) | |
d4be073d | 153 | # error NUM_MONTHS must be 1 or 3 |
66ee8158 KZ |
154 | #endif |
155 | ||
5f845cb7 SK |
156 | enum { |
157 | SUNDAY = 0, | |
158 | MONDAY, | |
159 | TUESDAY, | |
160 | WEDNESDAY, | |
161 | THURSDAY, | |
162 | FRIDAY, | |
163 | SATURDAY, | |
d68f076f SK |
164 | DAYS_IN_WEEK, |
165 | NONEDAY | |
5f845cb7 | 166 | }; |
6dbe3af9 | 167 | |
5f845cb7 | 168 | #define FIRST_WEEKDAY SATURDAY /* Jan 1st, 1 was a Saturday */ |
5f845cb7 SK |
169 | #define REFORMATION_YEAR 1752 /* Signed-off-by: Lord Chesterfield */ |
170 | #define REFORMATION_MONTH 9 /* September */ | |
d162fcb5 KZ |
171 | #define FIRST_MISSING_DAY 639799 /* 3 Sep 1752 */ |
172 | #define NUMBER_MISSING_DAYS 11 /* 11 day correction */ | |
c36c4a4e | 173 | #define YDAY_AFTER_MISSING 258 /* 14th in Sep 1752 */ |
6dbe3af9 | 174 | |
5f845cb7 SK |
175 | #define DAYS_IN_YEAR 365 /* the common case, leap years are calculated */ |
176 | #define MONTHS_IN_YEAR 12 | |
177 | #define DAYS_IN_MONTH 31 | |
f06602a4 | 178 | #define MAXDAYS 42 /* slots in a month array */ |
6dbe3af9 KZ |
179 | #define SPACE -1 /* used in day array */ |
180 | ||
5f845cb7 | 181 | #define SMALLEST_YEAR 1 |
5f845cb7 SK |
182 | |
183 | #define DAY_LEN 3 /* 3 spaces per day */ | |
184 | #define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN) | |
185 | #define HEAD_SEP 2 | |
b283141c | 186 | #define MONTH_COLS 3 /* month columns in year view */ |
aae4f87e | 187 | #define WNUM_LEN 3 |
5f845cb7 | 188 | |
5f845cb7 SK |
189 | #define TODAY_FLAG 0x400 /* flag day for highlighting */ |
190 | ||
e44fe471 | 191 | #define FMT_ST_LINES 9 |
5f845cb7 SK |
192 | #define FMT_ST_CHARS 300 /* 90 suffices in most locales */ |
193 | struct fmt_st | |
194 | { | |
d4be073d | 195 | char s[FMT_ST_LINES][FMT_ST_CHARS]; |
5f845cb7 SK |
196 | }; |
197 | ||
1beb933e | 198 | static const int days_in_month[2][13] = { |
6dbe3af9 KZ |
199 | {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, |
200 | {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, | |
201 | }; | |
202 | ||
e8c58289 SK |
203 | /* September 1752 is special, and has static assignments for both date |
204 | * and Julian representations. */ | |
1beb933e | 205 | static const int d_sep1752[MAXDAYS / 2] = { |
6dbe3af9 KZ |
206 | SPACE, SPACE, 1, 2, 14, 15, 16, |
207 | 17, 18, 19, 20, 21, 22, 23, | |
e8c58289 SK |
208 | 24, 25, 26, 27, 28, 29, 30 |
209 | }, j_sep1752[MAXDAYS / 2] = { | |
6dbe3af9 KZ |
210 | SPACE, SPACE, 245, 246, 258, 259, 260, |
211 | 261, 262, 263, 264, 265, 266, 267, | |
e8c58289 | 212 | 268, 269, 270, 271, 272, 273, 274 |
6dbe3af9 KZ |
213 | }, empty[MAXDAYS] = { |
214 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, | |
215 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, | |
216 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, | |
217 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, | |
218 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, | |
f06602a4 | 219 | SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE |
6dbe3af9 KZ |
220 | }; |
221 | ||
c36c4a4e TK |
222 | enum { |
223 | WEEK_NUM_DISABLED = 0, | |
aae4f87e TK |
224 | WEEK_NUM_MASK=0xff, |
225 | WEEK_NUM_ISO=0x100, | |
226 | WEEK_NUM_US=0x200, | |
c36c4a4e | 227 | }; |
e8f26419 KZ |
228 | |
229 | /* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */ | |
71ff238e | 230 | static char day_headings[(WEEK_LEN + 1) * 6 + 1]; |
6dbe3af9 | 231 | |
ffc56357 SK |
232 | struct cal_request { |
233 | int day; | |
234 | int month; | |
235 | long year; | |
236 | int week; | |
237 | }; | |
238 | ||
b549058b SK |
239 | struct cal_control { |
240 | const char *full_month[MONTHS_IN_YEAR]; /* month names */ | |
241 | int colormode; /* day and week number highlight */ | |
242 | int num_months; /* number of months horizontally in print out */ | |
243 | int weekstart; /* day the week starts, often Sun or Mon */ | |
244 | int weektype; /* WEEK_TYPE_{NONE,ISO,US} */ | |
71ff238e SK |
245 | size_t day_width; /* day width in characters in printout */ |
246 | size_t week_width; /* 7 * day_width + possible week num */ | |
ffc56357 | 247 | struct cal_request req; /* the times user is interested */ |
b549058b | 248 | unsigned int julian:1, /* julian output */ |
efce94ec SK |
249 | yflag:1, /* print whole year */ |
250 | header_hint:1; /* does month name + year need two lines to fit */ | |
b549058b | 251 | }; |
6dbe3af9 | 252 | |
852c8d21 SK |
253 | struct cal_month { |
254 | int days[MAXDAYS]; /* the day numbers, or SPACE */ | |
255 | int weeks[MAXDAYS / DAYS_IN_WEEK]; | |
256 | int month; | |
257 | long year; | |
258 | struct cal_month *next; | |
259 | }; | |
260 | ||
5f845cb7 | 261 | /* function prototypes */ |
e44fe471 | 262 | static int leap_year(long year); |
b549058b | 263 | static void headers_init(struct cal_control *ctl); |
f60117b5 | 264 | static void set_consecutive_months(struct cal_month *month, int m, long y); |
852c8d21 SK |
265 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl); |
266 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl); | |
267 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl); | |
ffc56357 | 268 | static void monthly(const struct cal_control *ctl); |
ffc56357 | 269 | static void monthly3(const struct cal_control *ctl); |
0106c9e2 SK |
270 | static char *append_weeknum(char *p, int *dp, int month, long year, int cal, int row, |
271 | const struct cal_control *ctl); | |
ffc56357 | 272 | static void yearly(const struct cal_control *ctl); |
0106c9e2 SK |
273 | static void day_array(int day, int month, long year, int *days, const struct cal_control *ctl); |
274 | static int day_in_year(int day, int month, long year); | |
ff90b006 | 275 | static int day_in_week(int day, int month, long year); |
0106c9e2 | 276 | static int week_number(int day, int month, long year, const struct cal_control *ctl); |
ffc56357 | 277 | static int week_to_day(const struct cal_control *ctl); |
0106c9e2 SK |
278 | static char *ascii_day(char *p, int day, const struct cal_control *ctl); |
279 | static char *ascii_weeknum(char *p, int weeknum, const struct cal_control *ctl); | |
280 | static int center_str(const char *src, char *dest, size_t dest_size, size_t width); | |
281 | static void center(const char *str, size_t len, int separate); | |
282 | static void __attribute__((__noreturn__)) usage(FILE *out); | |
6dbe3af9 | 283 | |
d4be073d KZ |
284 | int main(int argc, char **argv) |
285 | { | |
6dbe3af9 KZ |
286 | struct tm *local_time; |
287 | time_t now; | |
ffc56357 | 288 | int ch; |
b549058b SK |
289 | static struct cal_control ctl = { |
290 | .weekstart = SUNDAY, | |
291 | .num_months = NUM_MONTHS, | |
292 | .colormode = UL_COLORMODE_AUTO, | |
71ff238e | 293 | .weektype = WEEK_NUM_DISABLED, |
ffc56357 SK |
294 | .day_width = DAY_LEN, |
295 | .req.day = 0, | |
296 | .req.month = 0 | |
b549058b | 297 | }; |
7b353df2 SK |
298 | |
299 | enum { | |
300 | OPT_COLOR = CHAR_MAX + 1 | |
301 | }; | |
eb63b9b8 | 302 | |
022df321 SK |
303 | static const struct option longopts[] = { |
304 | {"one", no_argument, NULL, '1'}, | |
305 | {"three", no_argument, NULL, '3'}, | |
306 | {"sunday", no_argument, NULL, 's'}, | |
307 | {"monday", no_argument, NULL, 'm'}, | |
308 | {"julian", no_argument, NULL, 'j'}, | |
309 | {"year", no_argument, NULL, 'y'}, | |
aae4f87e | 310 | {"week", optional_argument, NULL, 'w'}, |
7b353df2 | 311 | {"color", optional_argument, NULL, OPT_COLOR}, |
022df321 SK |
312 | {"version", no_argument, NULL, 'V'}, |
313 | {"help", no_argument, NULL, 'h'}, | |
314 | {NULL, 0, NULL, 0} | |
315 | }; | |
316 | ||
7eda085c KZ |
317 | setlocale(LC_ALL, ""); |
318 | bindtextdomain(PACKAGE, LOCALEDIR); | |
319 | textdomain(PACKAGE); | |
c05a80ca | 320 | atexit(close_stdout); |
e8f26419 | 321 | |
310170b8 | 322 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP) |
d162fcb5 KZ |
323 | if ((term = getenv("TERM"))) { |
324 | int ret; | |
5f845cb7 | 325 | my_setupterm(term, STDOUT_FILENO, &ret); |
d162fcb5 KZ |
326 | if (ret > 0) { |
327 | Senter = my_tgetstr("so","smso"); | |
328 | Sexit = my_tgetstr("se","rmso"); | |
94b26919 | 329 | Slen = strlen(Senter) + strlen(Sexit); |
d162fcb5 KZ |
330 | } |
331 | } | |
332 | #endif | |
333 | ||
612721db | 334 | /* |
0a9bead0 PB |
335 | * The traditional Unix cal utility starts the week at Sunday, |
336 | * while ISO 8601 starts at Monday. We read the start day from | |
337 | * the locale database, which can be overridden with the | |
338 | * -s (Sunday) or -m (Monday) options. | |
612721db | 339 | */ |
69cabd72 | 340 | #if HAVE_DECL__NL_TIME_WEEK_1STDAY |
0a9bead0 PB |
341 | /* |
342 | * You need to use 2 locale variables to get the first day of the week. | |
343 | * This is needed to support first_weekday=2 and first_workday=1 for | |
344 | * the rare case where working days span across 2 weeks. | |
345 | * This shell script shows the combinations and calculations involved: | |
33c17354 SK |
346 | * |
347 | * for LANG in en_US ru_RU fr_FR csb_PL POSIX; do | |
348 | * printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday) | |
349 | * date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w | |
350 | * done | |
351 | * | |
352 | * en_US: 19971130 + 1 -1 = 0 #0 = sunday | |
353 | * ru_RU: 19971130 + 2 -1 = 1 | |
354 | * fr_FR: 19971201 + 1 -1 = 1 | |
355 | * csb_PL: 19971201 + 2 -1 = 2 | |
356 | * POSIX: 19971201 + 7 -1 = 0 | |
0a9bead0 PB |
357 | */ |
358 | { | |
aebb9522 KZ |
359 | int wfd; |
360 | union { unsigned int word; char *string; } val; | |
361 | val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY); | |
362 | ||
363 | wfd = val.word; | |
0a9bead0 | 364 | wfd = day_in_week(wfd % 100, (wfd / 100) % 100, wfd / (100 * 100)); |
b549058b | 365 | ctl.weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % DAYS_IN_WEEK; |
0a9bead0 | 366 | } |
e8f26419 | 367 | #endif |
d162fcb5 | 368 | |
af7c483e | 369 | while ((ch = getopt_long(argc, argv, "13mjsywVh", longopts, NULL)) != -1) |
6dbe3af9 | 370 | switch(ch) { |
d162fcb5 | 371 | case '1': |
b549058b | 372 | ctl.num_months = 1; /* default */ |
d162fcb5 KZ |
373 | break; |
374 | case '3': | |
b549058b | 375 | ctl.num_months = 3; |
d162fcb5 | 376 | break; |
ffc43748 | 377 | case 's': |
b549058b | 378 | ctl.weekstart = SUNDAY; /* default */ |
ffc43748 | 379 | break; |
5c36a0eb | 380 | case 'm': |
b549058b | 381 | ctl.weekstart = MONDAY; |
5c36a0eb | 382 | break; |
6dbe3af9 | 383 | case 'j': |
b549058b | 384 | ctl.julian = 1; |
71ff238e | 385 | ctl.day_width = DAY_LEN + 1; |
6dbe3af9 KZ |
386 | break; |
387 | case 'y': | |
b549058b | 388 | ctl.yflag = 1; |
6dbe3af9 | 389 | break; |
c36c4a4e | 390 | case 'w': |
aae4f87e | 391 | if (optarg) { |
ffc56357 | 392 | ctl.req.week = strtos32_or_err(optarg, |
aae4f87e | 393 | _("invalid week argument")); |
ffc56357 | 394 | if (ctl.req.week < 1 || 53 < ctl.req.week) |
aae4f87e TK |
395 | errx(EXIT_FAILURE,_("illegal week value: use 1-53")); |
396 | } | |
b549058b | 397 | ctl.weektype = WEEK_NUM_US; /* default per weekstart */ |
c36c4a4e | 398 | break; |
7b353df2 | 399 | case OPT_COLOR: |
201b39f0 | 400 | if (optarg) |
b549058b | 401 | ctl.colormode = colormode_or_err(optarg, |
201b39f0 | 402 | _("unsupported color mode")); |
7b353df2 | 403 | break; |
eb63b9b8 | 404 | case 'V': |
e421313d | 405 | printf(UTIL_LINUX_VERSION); |
37d6897f | 406 | return EXIT_SUCCESS; |
022df321 SK |
407 | case 'h': |
408 | usage(stdout); | |
6dbe3af9 KZ |
409 | case '?': |
410 | default: | |
022df321 | 411 | usage(stderr); |
6dbe3af9 KZ |
412 | } |
413 | argc -= optind; | |
414 | argv += optind; | |
415 | ||
b549058b | 416 | if (ctl.weektype) { |
ffc56357 | 417 | ctl.weektype = ctl.req.week & WEEK_NUM_MASK; |
b549058b | 418 | ctl.weektype |= (ctl.weekstart == MONDAY ? WEEK_NUM_ISO : WEEK_NUM_US); |
71ff238e SK |
419 | ctl.week_width = (ctl.day_width * DAYS_IN_WEEK) + WNUM_LEN; |
420 | } else | |
421 | ctl.week_width = ctl.day_width * DAYS_IN_WEEK; | |
c36c4a4e | 422 | |
a43145e1 RP |
423 | time(&now); |
424 | local_time = localtime(&now); | |
425 | ||
6dbe3af9 | 426 | switch(argc) { |
d7a92b89 | 427 | case 3: |
ffc56357 SK |
428 | ctl.req.day = strtos32_or_err(*argv++, _("illegal day value")); |
429 | if (ctl.req.day < 1 || DAYS_IN_MONTH < ctl.req.day) | |
5f845cb7 | 430 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), DAYS_IN_MONTH); |
d7a92b89 | 431 | /* FALLTHROUGH */ |
6dbe3af9 | 432 | case 2: |
ffc56357 SK |
433 | ctl.req.month = strtos32_or_err(*argv++, _("illegal month value: use 1-12")); |
434 | if (ctl.req.month < 1 || MONTHS_IN_YEAR < ctl.req.month) | |
022df321 | 435 | errx(EXIT_FAILURE, _("illegal month value: use 1-12")); |
6dbe3af9 KZ |
436 | /* FALLTHROUGH */ |
437 | case 1: | |
ffc56357 SK |
438 | ctl.req.year = strtol_or_err(*argv++, _("illegal year value")); |
439 | if (ctl.req.year < SMALLEST_YEAR) | |
e44fe471 | 440 | errx(EXIT_FAILURE, _("illegal year value: use positive integer")); |
ffc56357 SK |
441 | if (ctl.req.day) { |
442 | int dm = days_in_month[leap_year(ctl.req.year)][ctl.req.month]; | |
443 | if (ctl.req.day > dm) | |
022df321 | 444 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm); |
ffc56357 SK |
445 | ctl.req.day = day_in_year(ctl.req.day, ctl.req.month, ctl.req.year); |
446 | } else if ((long) (local_time->tm_year + 1900) == ctl.req.year) { | |
447 | ctl.req.day = local_time->tm_yday + 1; | |
d7a92b89 | 448 | } |
ffc56357 | 449 | if (!ctl.req.month && !ctl.req.week) |
b549058b | 450 | ctl.yflag = 1; |
6dbe3af9 KZ |
451 | break; |
452 | case 0: | |
ffc56357 SK |
453 | ctl.req.day = local_time->tm_yday + 1; |
454 | ctl.req.year = local_time->tm_year + 1900; | |
455 | ctl.req.month = local_time->tm_mon + 1; | |
6dbe3af9 KZ |
456 | break; |
457 | default: | |
022df321 | 458 | usage(stderr); |
6dbe3af9 | 459 | } |
aae4f87e | 460 | |
ffc56357 SK |
461 | if (0 < ctl.req.week) { |
462 | int yday = week_to_day(&ctl); | |
463 | int leap = leap_year(ctl.req.year); | |
464 | int m = 1; | |
c1732e62 | 465 | |
aae4f87e | 466 | if (yday < 1) |
c1732e62 KZ |
467 | errx(EXIT_FAILURE, _("illegal week value: year %ld " |
468 | "doesn't have week %d"), | |
ffc56357 SK |
469 | ctl.req.year, ctl.req.week); |
470 | while (m <= 12 && yday > days_in_month[leap][m]) | |
471 | yday -= days_in_month[leap][m++]; | |
472 | if (m > 12) { | |
c1732e62 KZ |
473 | /* In some years (e.g. 2010 in ISO mode) it's possible |
474 | * to have a remnant of week 53 starting the year yet | |
475 | * the year in question ends during 52, in this case | |
476 | * we're assuming that early remnant is being referred | |
477 | * to if 53 is given as argument. */ | |
ffc56357 | 478 | if (ctl.req.week != week_number(31, 12, ctl.req.year - 1, &ctl)) |
c1732e62 KZ |
479 | errx(EXIT_FAILURE, |
480 | _("illegal week value: year %ld " | |
481 | "doesn't have week %d"), | |
ffc56357 | 482 | ctl.req.year, ctl.req.week); |
aae4f87e | 483 | } |
ffc56357 SK |
484 | if (!ctl.req.month) |
485 | ctl.req.month = 12 < m ? 1 : m; | |
aae4f87e TK |
486 | } |
487 | ||
b549058b | 488 | headers_init(&ctl); |
6dbe3af9 | 489 | |
b549058b | 490 | if (!colors_init(ctl.colormode)) { |
ffc56357 | 491 | ctl.req.day = 0; |
b549058b | 492 | ctl.weektype &= ~WEEK_NUM_MASK; |
aae4f87e | 493 | } |
d7a92b89 | 494 | |
71ff238e SK |
495 | if (ctl.yflag) { |
496 | if (ctl.julian) | |
497 | ctl.num_months = MONTH_COLS - 1; | |
498 | else | |
499 | ctl.num_months = MONTH_COLS; | |
ffc56357 | 500 | yearly(&ctl); |
71ff238e | 501 | } else if (ctl.num_months == 1) |
ffc56357 | 502 | monthly(&ctl); |
b549058b | 503 | else if (ctl.num_months == 3) |
ffc56357 | 504 | monthly3(&ctl); |
37d6897f KZ |
505 | |
506 | return EXIT_SUCCESS; | |
6dbe3af9 KZ |
507 | } |
508 | ||
3b66dfd6 | 509 | /* leap year -- account for gregorian reformation in 1752 */ |
e44fe471 | 510 | static int leap_year(long year) |
3b66dfd6 | 511 | { |
5f845cb7 | 512 | if (year <= REFORMATION_YEAR) |
3b66dfd6 SK |
513 | return !(year % 4); |
514 | else | |
515 | return ( !(year % 4) && (year % 100) ) || !(year % 400); | |
516 | } | |
517 | ||
b549058b | 518 | static void headers_init(struct cal_control *ctl) |
6dbe3af9 | 519 | { |
71ff238e | 520 | size_t i, wd; |
b283141c | 521 | char *cur_dh = day_headings; |
efce94ec SK |
522 | char tmp[FMT_ST_CHARS]; |
523 | size_t year_len; | |
524 | ||
525 | year_len = snprintf(tmp, sizeof(tmp), "%ld", ctl->req.year); | |
33c17354 | 526 | |
5f845cb7 | 527 | for (i = 0; i < DAYS_IN_WEEK; i++) { |
add1924d | 528 | size_t space_left; |
b549058b | 529 | wd = (i + ctl->weekstart) % DAYS_IN_WEEK; |
33c17354 SK |
530 | |
531 | if (i) | |
532 | strcat(cur_dh++, " "); | |
add1924d KZ |
533 | space_left = sizeof(day_headings) - (cur_dh - day_headings); |
534 | ||
71ff238e | 535 | if (space_left <= (ctl->day_width - 1)) |
33c17354 | 536 | break; |
add1924d | 537 | cur_dh += center_str(nl_langinfo(ABDAY_1 + wd), cur_dh, |
71ff238e | 538 | space_left, ctl->day_width - 1); |
33c17354 SK |
539 | } |
540 | ||
efce94ec | 541 | for (i = 0; i < MONTHS_IN_YEAR; i++) { |
b549058b | 542 | ctl->full_month[i] = nl_langinfo(MON_1 + i); |
efce94ec SK |
543 | /* The +1 after year_len is space in between month and year. */ |
544 | if (ctl->week_width < strlen(ctl->full_month[i]) + year_len + 1) | |
545 | ctl->header_hint = 1; | |
546 | } | |
6dbe3af9 KZ |
547 | } |
548 | ||
f60117b5 | 549 | static void set_consecutive_months(struct cal_month *month, int m, long y) |
d4be073d | 550 | { |
f60117b5 SK |
551 | struct cal_month *i; |
552 | for (i = month; i; i = i->next) { | |
553 | i->month = m++; | |
554 | i->year = y; | |
555 | if (MONTHS_IN_YEAR < m) { | |
556 | m = 1; | |
557 | y++; | |
94b26919 | 558 | } |
66ee8158 KZ |
559 | } |
560 | } | |
561 | ||
852c8d21 | 562 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl) |
d4be073d | 563 | { |
852c8d21 SK |
564 | int first_week_day = day_in_week(1, month->month, month->year); |
565 | int month_days; | |
566 | int i, j, weeklines = 0; | |
567 | ||
568 | if (ctl->julian) | |
569 | j = day_in_year(1, month->month, month->year); | |
570 | else | |
571 | j = 1; | |
572 | month_days = j + days_in_month[leap_year(month->year)][month->month]; | |
573 | ||
574 | /* True when Sunday is not first day in the output week. */ | |
575 | if (ctl->weekstart) { | |
576 | first_week_day -= ctl->weekstart; | |
577 | if (first_week_day < 0) | |
578 | first_week_day = DAYS_IN_WEEK - ctl->weekstart; | |
579 | month_days += ctl->weekstart - 1; | |
580 | } | |
581 | ||
582 | /* Fill day array. */ | |
583 | for (i = 0; i < MAXDAYS; i++) { | |
584 | if (0 < first_week_day) { | |
585 | month->days[i] = SPACE; | |
586 | first_week_day--; | |
587 | continue; | |
588 | } | |
589 | if (j < month_days) { | |
590 | if (month->year == 1752 && month->month == 9 && (j == 3 || j == 247)) | |
591 | j += NUMBER_MISSING_DAYS; | |
592 | month->days[i] = j; | |
593 | j++; | |
594 | continue; | |
595 | } | |
596 | month->days[i] = SPACE; | |
597 | weeklines++; | |
598 | } | |
66ee8158 | 599 | |
852c8d21 SK |
600 | /* Add week numbers */ |
601 | if (ctl->weektype) { | |
602 | int weeknum = week_number(1, month->month, month->year, ctl); | |
603 | weeklines = MAXDAYS / DAYS_IN_WEEK - weeklines / DAYS_IN_WEEK; | |
604 | for (i = 0; i < MAXDAYS / DAYS_IN_WEEK; i++) { | |
605 | if (0 < weeklines) | |
606 | month->weeks[i] = weeknum++; | |
607 | else | |
608 | month->weeks[i] = SPACE; | |
609 | weeklines--; | |
610 | if (52 < weeknum && i == 0) | |
611 | weeknum = week_number(month->days[DAYS_IN_WEEK * (i + 1)], 1, month->year, ctl); | |
612 | else if (52 < weeknum) | |
613 | weeknum = week_number(31, 12, month->year, ctl); | |
614 | } | |
66ee8158 KZ |
615 | } |
616 | } | |
617 | ||
852c8d21 SK |
618 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl) |
619 | { | |
620 | char out[FMT_ST_CHARS]; | |
621 | struct cal_month *i; | |
622 | ||
623 | if (ctl->header_hint) { | |
624 | for (i = month; i; i = i->next) { | |
625 | sprintf(out, _("%s"), ctl->full_month[i->month - 1]); | |
626 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : 2); | |
627 | } | |
628 | fputs("\n", stdout); | |
629 | for (i = month; i; i = i->next) { | |
630 | sprintf(out, _("%ld"), i->year); | |
631 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : 2); | |
632 | } | |
633 | } else { | |
634 | for (i = month; i; i = i->next) { | |
635 | sprintf(out, _("%s %ld"), ctl->full_month[i->month - 1], i->year); | |
636 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : 2); | |
637 | } | |
638 | } | |
639 | puts(""); | |
640 | for (i = month; i; i = i->next) { | |
641 | if (ctl->weektype) { | |
642 | if (ctl->julian) | |
643 | printf("%*s%s", (int)ctl->day_width - 1, "", day_headings); | |
644 | else | |
645 | printf("%*s%s", (int)ctl->day_width, "", day_headings); | |
646 | } else | |
647 | fputs(day_headings, stdout); | |
648 | if (i->next != NULL) | |
649 | fputs(" ", stdout); | |
650 | } | |
651 | puts(""); | |
652 | } | |
653 | ||
654 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl) | |
655 | { | |
656 | int reqday, week_line, d; | |
657 | int skip; | |
658 | struct cal_month *i; | |
659 | ||
660 | for (week_line = 0; week_line < MAXDAYS / DAYS_IN_WEEK; week_line++) { | |
661 | for (i = month; i; i = i->next) { | |
662 | /* Determine the day that should be highlighted. */ | |
663 | reqday = 0; | |
664 | if (i->month == ctl->req.month && i->year == ctl->req.year) { | |
665 | if (ctl->julian) | |
666 | reqday = ctl->req.day; | |
667 | else | |
668 | reqday = | |
669 | ctl->req.day + 1 - day_in_year(1, i->month, | |
670 | i->year); | |
671 | } | |
672 | ||
673 | if (ctl->weektype) { | |
674 | if (0 < i->weeks[week_line]) { | |
675 | if ((ctl->weektype & WEEK_NUM_MASK) == | |
676 | i->weeks[week_line]) | |
677 | printf("%s%2d%s", Senter, i->weeks[week_line], | |
678 | Sexit); | |
679 | else | |
680 | printf("%2d", i->weeks[week_line]); | |
681 | } else | |
682 | printf("%2s", ""); | |
683 | skip = ctl->day_width; | |
684 | } else | |
685 | /* First day of the week is one char narrower than the other days, | |
686 | * unless week number is printed. */ | |
687 | skip = ctl->day_width - 1; | |
688 | ||
689 | for (d = DAYS_IN_WEEK * week_line; | |
690 | d < DAYS_IN_WEEK * week_line + DAYS_IN_WEEK; d++) { | |
691 | if (0 < i->days[d]) { | |
692 | if (reqday == i->days[d]) | |
693 | printf("%*s%s%*d%s", skip - (ctl->julian ? 3 : 2), | |
694 | "", Senter, (ctl->julian ? 3 : 2), | |
695 | i->days[d], Sexit); | |
696 | else | |
697 | printf("%*d", skip, i->days[d]); | |
698 | } else | |
699 | printf("%*s", skip, ""); | |
700 | if (skip < (int)ctl->day_width) | |
701 | skip++; | |
702 | } | |
703 | if (i->next != NULL) | |
704 | fputs(" ", stdout); | |
705 | } | |
706 | if (i == NULL) | |
707 | fputs(" \n", stdout); | |
708 | } | |
709 | } | |
710 | ||
711 | static void monthly(const struct cal_control *ctl) | |
712 | { | |
713 | struct cal_month month; | |
714 | ||
715 | month.month = ctl->req.month; | |
716 | month.year = ctl->req.year; | |
717 | month.next = NULL; | |
718 | ||
719 | cal_fill_month(&month, ctl); | |
720 | ||
721 | cal_output_header(&month, ctl); | |
722 | cal_output_months(&month, ctl); | |
723 | } | |
724 | ||
ffc56357 | 725 | static void monthly3(const struct cal_control *ctl) |
d4be073d | 726 | { |
f60117b5 SK |
727 | struct cal_month m1, m2, m3, *i; |
728 | int first_month; | |
729 | long first_year; | |
730 | ||
731 | m1.next = &m2; | |
732 | m2.next = &m3; | |
733 | m3.next = NULL; | |
734 | ||
ffc56357 | 735 | if (ctl->req.month == 1) { |
f60117b5 SK |
736 | first_month = MONTHS_IN_YEAR; |
737 | first_year = ctl->req.year - 1; | |
d162fcb5 | 738 | } else { |
f60117b5 SK |
739 | first_month = ctl->req.month - 1; |
740 | first_year = ctl->req.year; | |
e66ba1bf | 741 | } |
94b26919 | 742 | |
f60117b5 SK |
743 | set_consecutive_months(&m1, first_month, first_year); |
744 | for (i = &m1; i; i = i->next) | |
745 | cal_fill_month(i, ctl); | |
746 | cal_output_header(&m1, ctl); | |
747 | cal_output_months(&m1, ctl); | |
6dbe3af9 KZ |
748 | } |
749 | ||
b549058b | 750 | static char *append_weeknum(char *p, int *dp, |
c1732e62 | 751 | int month, long year, int cal, |
b549058b | 752 | int row, const struct cal_control *ctl) |
c1732e62 KZ |
753 | { |
754 | int col; | |
755 | ||
756 | for (col = 0; col < DAYS_IN_WEEK; col++) { | |
757 | int xd = dp[row * DAYS_IN_WEEK + col]; | |
758 | ||
759 | if (xd != SPACE) { | |
b549058b SK |
760 | int weeknum = week_number(xd & ~TODAY_FLAG, |
761 | month + cal + 1, year, ctl); | |
76c4bbcc | 762 | p = ascii_weeknum(p, weeknum, ctl); |
c1732e62 KZ |
763 | break; |
764 | } else if (col+1 == DAYS_IN_WEEK) | |
765 | p += sprintf(p," "); | |
766 | } | |
767 | return p; | |
768 | } | |
769 | ||
ffc56357 | 770 | static void yearly(const struct cal_control *ctl) |
d4be073d | 771 | { |
c1732e62 | 772 | int col, i, month, row, which_cal; |
5f845cb7 | 773 | int days[MONTHS_IN_YEAR][MAXDAYS]; |
add1924d KZ |
774 | char *p; |
775 | /* three weeks + separators + \0 */ | |
b549058b SK |
776 | int weeknumlen = (ctl->weektype ? WNUM_LEN : 0); |
777 | char lineout[ weeknumlen + sizeof(day_headings) + 2 + | |
778 | weeknumlen + sizeof(day_headings) + 2 + | |
779 | weeknumlen + sizeof(day_headings) + 1 ]; | |
71ff238e | 780 | |
ffc56357 | 781 | snprintf(lineout, sizeof(lineout), "%ld", ctl->req.year); |
c1732e62 | 782 | |
71ff238e | 783 | /* 2013-04-28: The -1 near HEAD_SEP makes year header to be aligned |
c1732e62 KZ |
784 | * exactly how it has been aligned for long time, but it is |
785 | * unexplainable. */ | |
71ff238e | 786 | center(lineout, (ctl->week_width + HEAD_SEP) * ctl->num_months - HEAD_SEP - 1, 0); |
e66ba1bf | 787 | my_putstring("\n\n"); |
d162fcb5 | 788 | |
5f845cb7 | 789 | for (i = 0; i < MONTHS_IN_YEAR; i++) |
ffc56357 | 790 | day_array(ctl->req.day, i + 1, ctl->req.year, days[i], ctl); |
d4be073d | 791 | |
71ff238e SK |
792 | for (month = 0; month < MONTHS_IN_YEAR; month += ctl->num_months) { |
793 | center(ctl->full_month[month], ctl->week_width - 1, HEAD_SEP + 1); | |
b549058b | 794 | if (ctl->julian) { |
71ff238e | 795 | center(ctl->full_month[month + 1], ctl->week_width - 1, 0); |
b283141c | 796 | } else { |
71ff238e SK |
797 | center(ctl->full_month[month + 1], ctl->week_width - 1, HEAD_SEP + 1); |
798 | center(ctl->full_month[month + 2], ctl->week_width - 1, 0); | |
b283141c | 799 | } |
b549058b | 800 | if (ctl->julian) |
b283141c | 801 | snprintf(lineout, sizeof(lineout), |
c36c4a4e | 802 | "\n%*s%s%*s %*s%s\n", |
71ff238e | 803 | weeknumlen,"", day_headings, HEAD_SEP, "", |
b549058b | 804 | weeknumlen,"", day_headings); |
b283141c SK |
805 | else |
806 | snprintf(lineout, sizeof(lineout), | |
c36c4a4e | 807 | "\n%*s%s%*s %*s%s%*s %*s%s\n", |
71ff238e SK |
808 | weeknumlen,"", day_headings, HEAD_SEP, "", |
809 | weeknumlen,"", day_headings, HEAD_SEP, "", | |
b549058b | 810 | weeknumlen,"", day_headings); |
add1924d | 811 | |
e66ba1bf | 812 | my_putstring(lineout); |
5f845cb7 | 813 | for (row = 0; row < DAYS_IN_WEEK - 1; row++) { |
d162fcb5 | 814 | p = lineout; |
71ff238e | 815 | for (which_cal = 0; which_cal < ctl->num_months; which_cal++) { |
c1732e62 KZ |
816 | int *dp = &days[month + which_cal][row * DAYS_IN_WEEK]; |
817 | ||
b549058b SK |
818 | if (ctl->weektype) |
819 | p = append_weeknum(p, days[month + which_cal], | |
ffc56357 | 820 | month, ctl->req.year, which_cal, |
b549058b | 821 | row, ctl); |
c1732e62 | 822 | |
5f845cb7 | 823 | for (col = 0; col < DAYS_IN_WEEK; col++) |
b549058b | 824 | p = ascii_day(p, *dp++, ctl); |
d162fcb5 | 825 | p += sprintf(p, " "); |
6dbe3af9 KZ |
826 | } |
827 | *p = '\0'; | |
f4061938 | 828 | my_putstring(lineout); |
e66ba1bf | 829 | my_putstring("\n"); |
6dbe3af9 KZ |
830 | } |
831 | } | |
e66ba1bf | 832 | my_putstring("\n"); |
6dbe3af9 KZ |
833 | } |
834 | ||
835 | /* | |
836 | * day_array -- | |
837 | * Fill in an array of 42 integers with a calendar. Assume for a moment | |
838 | * that you took the (maximum) 6 rows in a calendar and stretched them | |
839 | * out end to end. You would have 42 numbers or spaces. This routine | |
840 | * builds that array for any month from Jan. 1 through Dec. 9999. | |
841 | */ | |
b549058b | 842 | static void day_array(int day, int month, long year, int *days, const struct cal_control *ctl) |
d4be073d | 843 | { |
d162fcb5 | 844 | int julday, daynum, dw, dm; |
1beb933e | 845 | const int *sep1752; |
e8c58289 SK |
846 | |
847 | memcpy(days, empty, MAXDAYS * sizeof(int)); | |
848 | if (year == REFORMATION_YEAR && month == REFORMATION_MONTH) { | |
b549058b SK |
849 | sep1752 = ctl->julian ? j_sep1752 : d_sep1752; |
850 | memcpy(days, sep1752 + ctl->weekstart, | |
851 | ((MAXDAYS / 2) - ctl->weekstart) * sizeof(int)); | |
e8c58289 SK |
852 | for (dm = 0; dm < MAXDAYS / 2; dm++) |
853 | if (j_sep1752[dm] == day) | |
d7a92b89 | 854 | days[dm] |= TODAY_FLAG; |
6dbe3af9 KZ |
855 | return; |
856 | } | |
6dbe3af9 | 857 | dm = days_in_month[leap_year(year)][month]; |
b549058b | 858 | dw = (day_in_week(1, month, year) - ctl->weekstart + DAYS_IN_WEEK) % DAYS_IN_WEEK; |
d162fcb5 | 859 | julday = day_in_year(1, month, year); |
b549058b | 860 | daynum = ctl->julian ? julday : 1; |
c1732e62 | 861 | |
d162fcb5 KZ |
862 | while (dm--) { |
863 | days[dw] = daynum++; | |
864 | if (julday++ == day) | |
865 | days[dw] |= TODAY_FLAG; | |
866 | dw++; | |
867 | } | |
6dbe3af9 KZ |
868 | } |
869 | ||
870 | /* | |
871 | * day_in_year -- | |
872 | * return the 1 based day number within the year | |
873 | */ | |
d4be073d KZ |
874 | static int day_in_year(int day, int month, long year) |
875 | { | |
6dbe3af9 KZ |
876 | int i, leap; |
877 | ||
878 | leap = leap_year(year); | |
879 | for (i = 1; i < month; i++) | |
880 | day += days_in_month[leap][i]; | |
d162fcb5 | 881 | return day; |
6dbe3af9 KZ |
882 | } |
883 | ||
884 | /* | |
885 | * day_in_week | |
886 | * return the 0 based day number for any date from 1 Jan. 1 to | |
887 | * 31 Dec. 9999. Assumes the Gregorian reformation eliminates | |
d68f076f SK |
888 | * 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday |
889 | * during the period of 11 days. | |
6dbe3af9 | 890 | */ |
ff90b006 | 891 | static int day_in_week(int day, int month, long year) |
91ac9ef5 SK |
892 | { |
893 | static const int reform[] = { | |
894 | SUNDAY, WEDNESDAY, TUESDAY, FRIDAY, SUNDAY, WEDNESDAY, | |
895 | FRIDAY, MONDAY, THURSDAY, SATURDAY, TUESDAY, THURSDAY | |
896 | }; | |
897 | static const int old[] = { | |
898 | FRIDAY, MONDAY, SUNDAY, WEDNESDAY, FRIDAY, MONDAY, | |
899 | WEDNESDAY, SATURDAY, TUESDAY, THURSDAY, SUNDAY, TUESDAY | |
900 | }; | |
ff90b006 SK |
901 | if (year != 1753) |
902 | year -= month < 3; | |
91ac9ef5 | 903 | else |
ff90b006 SK |
904 | year -= (month < 3) + 14; |
905 | if (REFORMATION_YEAR < year | |
906 | || (year == REFORMATION_YEAR && 9 < month) | |
907 | || (year == REFORMATION_YEAR && month == 9 && 13 < day)) | |
908 | return (year + (year / 4) - (year / 100) + (year / 400) + reform[month - 1] + | |
909 | day) % 7; | |
910 | if (year < REFORMATION_YEAR | |
911 | || (year == REFORMATION_YEAR && month < 9) | |
912 | || (year == REFORMATION_YEAR && month == 9 && day < 3)) | |
913 | return (year + year / 4 + old[month - 1] + day) % 7; | |
91ac9ef5 | 914 | return NONEDAY; |
6dbe3af9 KZ |
915 | } |
916 | ||
c36c4a4e TK |
917 | /* |
918 | * week_number | |
919 | * return the week number of a given date, 1..53. | |
920 | * Supports ISO-8601 and North American modes. | |
921 | * Day may be given as Julian day of the year mode, in which | |
922 | * case the month is disregarded entirely. | |
923 | */ | |
b549058b | 924 | static int week_number(int day, int month, long year, const struct cal_control *ctl) |
c1732e62 KZ |
925 | { |
926 | int fday = 0, yday; | |
927 | int wday = day_in_week(1, 1, year); | |
928 | ||
b549058b | 929 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 KZ |
930 | fday = wday + (wday >= FRIDAY ? -2 : 5); |
931 | else | |
932 | /* WEEK_NUM_US | |
933 | * - according to gcal, the first Sun is in the first week | |
934 | * - according to wikipedia, the first Sat is in the first week | |
935 | */ | |
936 | fday = wday + (wday == SUNDAY ? 6 : -1); | |
937 | ||
938 | /* For julian dates the month can be set to 1, the global julian | |
939 | * variable cannot be relied upon here, because we may recurse | |
940 | * internally for 31.12. which would not work. */ | |
941 | if (day > 31) | |
942 | month = 1; | |
943 | ||
c36c4a4e | 944 | yday = day_in_year(day,month,year); |
c1732e62 | 945 | if (year == REFORMATION_YEAR) { |
c36c4a4e TK |
946 | if (yday >= YDAY_AFTER_MISSING) |
947 | fday -= NUMBER_MISSING_DAYS; | |
c36c4a4e | 948 | } |
c1732e62 KZ |
949 | |
950 | /* Last year is last year */ | |
951 | if (yday + fday < 7) | |
b549058b | 952 | return week_number(31, 12, year - 1, ctl); |
c1732e62 KZ |
953 | |
954 | /* Or it could be part of the next year. The reformation year had less | |
955 | * days than 365 making this check invalid, but reformation year ended | |
956 | * on Sunday and in week 51, so it's ok here. */ | |
b549058b | 957 | if (ctl->weektype == WEEK_NUM_ISO && yday >= 363 |
c1732e62 KZ |
958 | && day_in_week(day, month, year) >= MONDAY |
959 | && day_in_week(day, month, year) <= WEDNESDAY | |
960 | && day_in_week(31, 12, year) >= MONDAY | |
961 | && day_in_week(31, 12, year) <= WEDNESDAY) | |
b549058b | 962 | return week_number(1, 1, year + 1, ctl); |
c1732e62 KZ |
963 | |
964 | return (yday + fday) / 7; | |
c36c4a4e TK |
965 | } |
966 | ||
aae4f87e TK |
967 | /* |
968 | * week_to_day | |
969 | * return the yday of the first day in a given week inside | |
970 | * the given year. This may be something other than Monday | |
971 | * for ISO-8601 modes. For North American numbering this | |
972 | * always returns a Sunday. | |
973 | */ | |
ffc56357 | 974 | static int week_to_day(const struct cal_control *ctl) |
c1732e62 | 975 | { |
aae4f87e | 976 | int yday, wday; |
c1732e62 | 977 | |
ffc56357 SK |
978 | wday = day_in_week(1, 1, ctl->req.year); |
979 | yday = ctl->req.week * 7 - wday; | |
c1732e62 | 980 | |
b549058b | 981 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 KZ |
982 | yday -= (wday >= FRIDAY ? -2 : 5); |
983 | else | |
984 | yday -= (wday == SUNDAY ? 6 : -1); /* WEEK_NUM_US */ | |
985 | if (yday <= 0) | |
aae4f87e TK |
986 | return 1; |
987 | ||
988 | return yday; | |
989 | } | |
990 | ||
b549058b | 991 | static char *ascii_day(char *p, int day, const struct cal_control *ctl) |
d4be073d | 992 | { |
6dbe3af9 | 993 | int display, val; |
d162fcb5 | 994 | int highlight = 0; |
6dbe3af9 KZ |
995 | static char *aday[] = { |
996 | "", | |
997 | " 1", " 2", " 3", " 4", " 5", " 6", " 7", | |
998 | " 8", " 9", "10", "11", "12", "13", "14", | |
999 | "15", "16", "17", "18", "19", "20", "21", | |
1000 | "22", "23", "24", "25", "26", "27", "28", | |
1001 | "29", "30", "31", | |
1002 | }; | |
1003 | ||
1004 | if (day == SPACE) { | |
71ff238e SK |
1005 | memset(p, ' ', ctl->day_width); |
1006 | return p + ctl->day_width; | |
d162fcb5 KZ |
1007 | } |
1008 | if (day & TODAY_FLAG) { | |
1009 | day &= ~TODAY_FLAG; | |
8c6c72bf | 1010 | p += sprintf(p, "%s", Senter); |
d162fcb5 | 1011 | highlight = 1; |
6dbe3af9 | 1012 | } |
b549058b | 1013 | if (ctl->julian) { |
726f69e2 | 1014 | if ((val = day / 100)) { |
6dbe3af9 KZ |
1015 | day %= 100; |
1016 | *p++ = val + '0'; | |
1017 | display = 1; | |
1018 | } else { | |
1019 | *p++ = ' '; | |
1020 | display = 0; | |
1021 | } | |
1022 | val = day / 10; | |
1023 | if (val || display) | |
1024 | *p++ = val + '0'; | |
1025 | else | |
1026 | *p++ = ' '; | |
1027 | *p++ = day % 10 + '0'; | |
1028 | } else { | |
1029 | *p++ = aday[day][0]; | |
1030 | *p++ = aday[day][1]; | |
1031 | } | |
d162fcb5 | 1032 | if (highlight) |
8c6c72bf | 1033 | p += sprintf(p, "%s", Sexit); |
d162fcb5 KZ |
1034 | *p++ = ' '; |
1035 | return p; | |
6dbe3af9 KZ |
1036 | } |
1037 | ||
76c4bbcc | 1038 | static char *ascii_weeknum(char *p, int weeknum, const struct cal_control *ctl) |
aae4f87e | 1039 | { |
b549058b | 1040 | if ((ctl->weektype & WEEK_NUM_MASK) == weeknum) |
44df9bd4 | 1041 | p += sprintf(p, "%s%2d%s ", Senter, weeknum, Sexit); |
aae4f87e | 1042 | else |
44df9bd4 | 1043 | p += sprintf(p, "%2d ", weeknum); |
aae4f87e TK |
1044 | return p; |
1045 | } | |
1046 | ||
d162fcb5 KZ |
1047 | /* |
1048 | * Center string, handling multibyte characters appropriately. | |
1049 | * In addition if the string is too large for the width it's truncated. | |
ff87defc | 1050 | * The number of trailing spaces may be 1 less than the number of leading spaces. |
d162fcb5 | 1051 | */ |
d4be073d KZ |
1052 | static int center_str(const char* src, char* dest, |
1053 | size_t dest_size, size_t width) | |
d162fcb5 | 1054 | { |
104b92f8 PB |
1055 | return mbsalign(src, dest, dest_size, &width, |
1056 | MBS_ALIGN_CENTER, MBA_UNIBYTE_FALLBACK); | |
d162fcb5 KZ |
1057 | } |
1058 | ||
d4be073d | 1059 | static void center(const char *str, size_t len, int separate) |
6dbe3af9 | 1060 | { |
d162fcb5 | 1061 | char lineout[FMT_ST_CHARS]; |
e66ba1bf | 1062 | |
17282538 | 1063 | center_str(str, lineout, ARRAY_SIZE(lineout), len); |
e66ba1bf KZ |
1064 | my_putstring(lineout); |
1065 | ||
1066 | if (separate) { | |
1067 | snprintf(lineout, sizeof(lineout), "%*s", separate, ""); | |
1068 | my_putstring(lineout); | |
1069 | } | |
6dbe3af9 KZ |
1070 | } |
1071 | ||
022df321 | 1072 | static void __attribute__ ((__noreturn__)) usage(FILE * out) |
6dbe3af9 | 1073 | { |
201d43fd SK |
1074 | fputs(USAGE_HEADER, out); |
1075 | fprintf(out, _(" %s [options] [[[day] month] year]\n"), program_invocation_short_name); | |
d4be073d | 1076 | |
233ad1fa PB |
1077 | fputs(USAGE_SEPARATOR, out); |
1078 | fputs(_("Display a calendar, or some part of it.\n"), out); | |
1079 | fputs(_("Without any arguments, display the current month.\n"), out); | |
1080 | ||
201d43fd | 1081 | fputs(USAGE_OPTIONS, out); |
233ad1fa PB |
1082 | fputs(_(" -1, --one show only a single month (default)\n"), out); |
1083 | fputs(_(" -3, --three show three months spanning the date\n"), out); | |
201d43fd SK |
1084 | fputs(_(" -s, --sunday Sunday as first day of week\n"), out); |
1085 | fputs(_(" -m, --monday Monday as first day of week\n"), out); | |
1086 | fputs(_(" -j, --julian output Julian dates\n"), out); | |
233ad1fa | 1087 | fputs(_(" -y, --year show the whole year\n"), out); |
af7c483e | 1088 | fputs(_(" -w, --week[=<num>] show US or ISO-8601 week numbers\n"), out); |
201d43fd | 1089 | fputs(_(" --color[=<when>] colorize messages (auto, always or never)\n"), out); |
d4be073d | 1090 | |
201d43fd SK |
1091 | fputs(USAGE_SEPARATOR, out); |
1092 | fputs(USAGE_HELP, out); | |
1093 | fputs(USAGE_VERSION, out); | |
1094 | fprintf(out, USAGE_MAN_TAIL("cal(1)")); | |
d4be073d | 1095 | |
022df321 | 1096 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); |
6dbe3af9 | 1097 | } |