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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 | 43 | * Added "-3" option to print prev/next month with current. |
9e930041 | 44 | * Added overridable default MONTHS_IN_ROW and "-1" option to |
66ee8158 KZ |
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> |
a79735f6 | 62 | #include <stdint.h> |
6dbe3af9 KZ |
63 | #include <stdio.h> |
64 | #include <stdlib.h> | |
65 | #include <string.h> | |
66 | #include <time.h> | |
67 | #include <unistd.h> | |
37d6897f | 68 | #include <errno.h> |
17282538 KZ |
69 | |
70 | #include "c.h" | |
c05a80ca | 71 | #include "closestream.h" |
7b353df2 | 72 | #include "colors.h" |
7eda085c | 73 | #include "nls.h" |
104b92f8 | 74 | #include "mbsalign.h" |
022df321 | 75 | #include "strutils.h" |
7800509b | 76 | #include "optutils.h" |
cd28d6a4 | 77 | #include "timeutils.h" |
726f69e2 | 78 | |
2a4b073e KZ |
79 | static int has_term = 0; |
80 | static const char *Senter = "", *Sexit = ""; /* enter and exit standout mode */ | |
81 | ||
310170b8 | 82 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
4aefe5e8 SK |
83 | # ifdef HAVE_NCURSES_H |
84 | # include <ncurses.h> | |
85 | # elif defined(HAVE_NCURSES_NCURSES_H) | |
86 | # include <ncurses/ncurses.h> | |
87 | # endif | |
88 | # include <term.h> | |
b4566a8a | 89 | #endif |
4aefe5e8 | 90 | |
58149472 KZ |
91 | static int setup_terminal(char *term |
92 | #if !defined(HAVE_LIBNCURSES) && !defined(HAVE_LIBNCURSESW) | |
93 | __attribute__((__unused__)) | |
94 | #endif | |
95 | ) | |
4aefe5e8 | 96 | { |
b4566a8a | 97 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
98 | int ret; |
99 | ||
100 | if (setupterm(term, STDOUT_FILENO, &ret) != OK || ret != 1) | |
101 | return -1; | |
b4566a8a | 102 | #endif |
2a4b073e | 103 | return 0; |
d162fcb5 KZ |
104 | } |
105 | ||
4aefe5e8 SK |
106 | static void my_putstring(char *s) |
107 | { | |
b4566a8a | 108 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
109 | if (has_term) |
110 | putp(s); | |
111 | else | |
b4566a8a | 112 | #endif |
2a4b073e | 113 | fputs(s, stdout); |
d162fcb5 KZ |
114 | } |
115 | ||
58149472 KZ |
116 | static const char *my_tgetstr(char *ss |
117 | #if !defined(HAVE_LIBNCURSES) && !defined(HAVE_LIBNCURSESW) | |
118 | __attribute__((__unused__)) | |
119 | #endif | |
120 | ) | |
4aefe5e8 | 121 | { |
2a4b073e KZ |
122 | const char *ret = NULL; |
123 | ||
b4566a8a | 124 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
125 | if (has_term) |
126 | ret = tigetstr(ss); | |
b4566a8a | 127 | #endif |
4aefe5e8 SK |
128 | if (!ret || ret == (char *)-1) |
129 | return ""; | |
d4be073d | 130 | return ret; |
d162fcb5 KZ |
131 | } |
132 | ||
e8f26419 | 133 | #include "widechar.h" |
95f1bdee | 134 | |
5f845cb7 SK |
135 | enum { |
136 | SUNDAY = 0, | |
137 | MONDAY, | |
138 | TUESDAY, | |
139 | WEDNESDAY, | |
140 | THURSDAY, | |
141 | FRIDAY, | |
142 | SATURDAY, | |
d68f076f SK |
143 | DAYS_IN_WEEK, |
144 | NONEDAY | |
5f845cb7 | 145 | }; |
6dbe3af9 | 146 | |
e1abe57e SK |
147 | enum { |
148 | JANUARY = 1, | |
149 | FEBRUARY, | |
150 | MARCH, | |
151 | APRIL, | |
152 | MAY, | |
153 | JUNE, | |
154 | JULY, | |
155 | AUGUST, | |
156 | SEPTEMBER, | |
157 | OCTOBER, | |
158 | NOVEMBER, | |
159 | DECEMBER | |
160 | }; | |
161 | ||
5f845cb7 | 162 | #define REFORMATION_YEAR 1752 /* Signed-off-by: Lord Chesterfield */ |
e1abe57e | 163 | #define REFORMATION_MONTH SEPTEMBER |
d162fcb5 | 164 | #define NUMBER_MISSING_DAYS 11 /* 11 day correction */ |
c36c4a4e | 165 | #define YDAY_AFTER_MISSING 258 /* 14th in Sep 1752 */ |
6dbe3af9 | 166 | |
e1abe57e | 167 | #define MONTHS_IN_YEAR DECEMBER |
5f845cb7 | 168 | #define DAYS_IN_MONTH 31 |
f06602a4 | 169 | #define MAXDAYS 42 /* slots in a month array */ |
6dbe3af9 KZ |
170 | #define SPACE -1 /* used in day array */ |
171 | ||
5f845cb7 | 172 | #define SMALLEST_YEAR 1 |
5f845cb7 SK |
173 | |
174 | #define DAY_LEN 3 /* 3 spaces per day */ | |
175 | #define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN) | |
7800509b | 176 | #define MONTHS_IN_YEAR_ROW 3 /* month columns in year view */ |
aae4f87e | 177 | #define WNUM_LEN 3 |
5f845cb7 | 178 | |
5f845cb7 | 179 | #define FMT_ST_CHARS 300 /* 90 suffices in most locales */ |
5f845cb7 | 180 | |
1beb933e | 181 | static const int days_in_month[2][13] = { |
6dbe3af9 KZ |
182 | {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, |
183 | {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, | |
184 | }; | |
185 | ||
c36c4a4e TK |
186 | enum { |
187 | WEEK_NUM_DISABLED = 0, | |
aae4f87e TK |
188 | WEEK_NUM_MASK=0xff, |
189 | WEEK_NUM_ISO=0x100, | |
190 | WEEK_NUM_US=0x200, | |
c36c4a4e | 191 | }; |
e8f26419 KZ |
192 | |
193 | /* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */ | |
71ff238e | 194 | static char day_headings[(WEEK_LEN + 1) * 6 + 1]; |
6dbe3af9 | 195 | |
ffc56357 SK |
196 | struct cal_request { |
197 | int day; | |
198 | int month; | |
4a7424a5 | 199 | int32_t year; |
ffc56357 | 200 | int week; |
7800509b | 201 | int start_month; |
ffc56357 SK |
202 | }; |
203 | ||
b549058b SK |
204 | struct cal_control { |
205 | const char *full_month[MONTHS_IN_YEAR]; /* month names */ | |
c8805632 KZ |
206 | const char *abbr_month[MONTHS_IN_YEAR]; /* abbreviated month names */ |
207 | ||
b549058b | 208 | int colormode; /* day and week number highlight */ |
12f17a23 | 209 | int num_months; /* number of requested months */ |
d4cb626d | 210 | int span_months; /* span the date */ |
7800509b | 211 | int months_in_row; /* number of months horizontally in print out */ |
b549058b SK |
212 | int weekstart; /* day the week starts, often Sun or Mon */ |
213 | int weektype; /* WEEK_TYPE_{NONE,ISO,US} */ | |
71ff238e SK |
214 | size_t day_width; /* day width in characters in printout */ |
215 | size_t week_width; /* 7 * day_width + possible week num */ | |
95f4adde | 216 | int gutter_width; /* spaces in between horizontal month outputs */ |
ffc56357 | 217 | struct cal_request req; /* the times user is interested */ |
b549058b | 218 | unsigned int julian:1, /* julian output */ |
7800509b | 219 | header_year:1, /* print year number */ |
efce94ec | 220 | header_hint:1; /* does month name + year need two lines to fit */ |
b549058b | 221 | }; |
6dbe3af9 | 222 | |
852c8d21 SK |
223 | struct cal_month { |
224 | int days[MAXDAYS]; /* the day numbers, or SPACE */ | |
225 | int weeks[MAXDAYS / DAYS_IN_WEEK]; | |
226 | int month; | |
4a7424a5 | 227 | int32_t year; |
852c8d21 SK |
228 | struct cal_month *next; |
229 | }; | |
230 | ||
5f845cb7 | 231 | /* function prototypes */ |
4a7424a5 | 232 | static int leap_year(int32_t year); |
731441ac | 233 | static int monthname_to_number(struct cal_control *ctl, const char *name); |
b549058b | 234 | static void headers_init(struct cal_control *ctl); |
852c8d21 SK |
235 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl); |
236 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl); | |
237 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl); | |
ffc56357 | 238 | static void monthly(const struct cal_control *ctl); |
ffc56357 | 239 | static void yearly(const struct cal_control *ctl); |
4a7424a5 SK |
240 | static int day_in_year(int day, int month, int32_t year); |
241 | static int day_in_week(int day, int month, int32_t year); | |
242 | static int week_number(int day, int month, int32_t year, const struct cal_control *ctl); | |
ffc56357 | 243 | static int week_to_day(const struct cal_control *ctl); |
0106c9e2 SK |
244 | static int center_str(const char *src, char *dest, size_t dest_size, size_t width); |
245 | static void center(const char *str, size_t len, int separate); | |
246 | static void __attribute__((__noreturn__)) usage(FILE *out); | |
6dbe3af9 | 247 | |
d4be073d KZ |
248 | int main(int argc, char **argv) |
249 | { | |
6dbe3af9 | 250 | struct tm *local_time; |
58149472 | 251 | char *term; |
6dbe3af9 | 252 | time_t now; |
7800509b | 253 | int ch = 0, yflag = 0, Yflag = 0; |
b549058b SK |
254 | static struct cal_control ctl = { |
255 | .weekstart = SUNDAY, | |
7800509b | 256 | .num_months = 1, /* default is "cal -1" */ |
d4cb626d | 257 | .span_months = 0, |
d0c9ddc3 | 258 | .colormode = UL_COLORMODE_UNDEF, |
71ff238e | 259 | .weektype = WEEK_NUM_DISABLED, |
ffc56357 | 260 | .day_width = DAY_LEN, |
95f4adde | 261 | .gutter_width = 2, |
ffc56357 SK |
262 | .req.day = 0, |
263 | .req.month = 0 | |
b549058b | 264 | }; |
7b353df2 SK |
265 | |
266 | enum { | |
267 | OPT_COLOR = CHAR_MAX + 1 | |
268 | }; | |
eb63b9b8 | 269 | |
022df321 SK |
270 | static const struct option longopts[] = { |
271 | {"one", no_argument, NULL, '1'}, | |
272 | {"three", no_argument, NULL, '3'}, | |
273 | {"sunday", no_argument, NULL, 's'}, | |
274 | {"monday", no_argument, NULL, 'm'}, | |
275 | {"julian", no_argument, NULL, 'j'}, | |
7800509b | 276 | {"months", required_argument, NULL, 'n'}, |
ccf3dd50 | 277 | {"span", no_argument, NULL, 'S'}, |
022df321 | 278 | {"year", no_argument, NULL, 'y'}, |
aae4f87e | 279 | {"week", optional_argument, NULL, 'w'}, |
7b353df2 | 280 | {"color", optional_argument, NULL, OPT_COLOR}, |
022df321 | 281 | {"version", no_argument, NULL, 'V'}, |
7800509b | 282 | {"twelve", no_argument, NULL, 'Y'}, |
022df321 SK |
283 | {"help", no_argument, NULL, 'h'}, |
284 | {NULL, 0, NULL, 0} | |
285 | }; | |
286 | ||
7800509b MK |
287 | static const ul_excl_t excl[] = { /* rows and cols in in ASCII order */ |
288 | { 'Y','n','y' }, | |
289 | { 0 } | |
290 | }; | |
291 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
292 | ||
7eda085c KZ |
293 | setlocale(LC_ALL, ""); |
294 | bindtextdomain(PACKAGE, LOCALEDIR); | |
295 | textdomain(PACKAGE); | |
c05a80ca | 296 | atexit(close_stdout); |
e8f26419 | 297 | |
58149472 KZ |
298 | term = getenv("TERM"); |
299 | if (term) { | |
300 | has_term = setup_terminal(term) == 0; | |
301 | if (has_term) { | |
302 | Senter = my_tgetstr("smso"); | |
303 | Sexit = my_tgetstr("rmso"); | |
d162fcb5 KZ |
304 | } |
305 | } | |
d162fcb5 | 306 | |
612721db | 307 | /* |
0a9bead0 PB |
308 | * The traditional Unix cal utility starts the week at Sunday, |
309 | * while ISO 8601 starts at Monday. We read the start day from | |
310 | * the locale database, which can be overridden with the | |
311 | * -s (Sunday) or -m (Monday) options. | |
612721db | 312 | */ |
69cabd72 | 313 | #if HAVE_DECL__NL_TIME_WEEK_1STDAY |
0a9bead0 PB |
314 | /* |
315 | * You need to use 2 locale variables to get the first day of the week. | |
316 | * This is needed to support first_weekday=2 and first_workday=1 for | |
317 | * the rare case where working days span across 2 weeks. | |
318 | * This shell script shows the combinations and calculations involved: | |
33c17354 SK |
319 | * |
320 | * for LANG in en_US ru_RU fr_FR csb_PL POSIX; do | |
321 | * printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday) | |
322 | * date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w | |
323 | * done | |
324 | * | |
325 | * en_US: 19971130 + 1 -1 = 0 #0 = sunday | |
326 | * ru_RU: 19971130 + 2 -1 = 1 | |
327 | * fr_FR: 19971201 + 1 -1 = 1 | |
328 | * csb_PL: 19971201 + 2 -1 = 2 | |
329 | * POSIX: 19971201 + 7 -1 = 0 | |
0a9bead0 PB |
330 | */ |
331 | { | |
aebb9522 KZ |
332 | int wfd; |
333 | union { unsigned int word; char *string; } val; | |
334 | val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY); | |
335 | ||
336 | wfd = val.word; | |
0a9bead0 | 337 | wfd = day_in_week(wfd % 100, (wfd / 100) % 100, wfd / (100 * 100)); |
b549058b | 338 | ctl.weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % DAYS_IN_WEEK; |
0a9bead0 | 339 | } |
e8f26419 | 340 | #endif |
ccf3dd50 | 341 | while ((ch = getopt_long(argc, argv, "13mjn:sSywYVh", longopts, NULL)) != -1) { |
7800509b MK |
342 | |
343 | err_exclusive_options(ch, longopts, excl, excl_st); | |
d162fcb5 | 344 | |
6dbe3af9 | 345 | switch(ch) { |
d162fcb5 | 346 | case '1': |
7800509b | 347 | /* default */ |
d162fcb5 KZ |
348 | break; |
349 | case '3': | |
b549058b | 350 | ctl.num_months = 3; |
d4cb626d | 351 | ctl.span_months = 1; |
7800509b | 352 | ctl.months_in_row = 3; |
d162fcb5 | 353 | break; |
ffc43748 | 354 | case 's': |
b549058b | 355 | ctl.weekstart = SUNDAY; /* default */ |
ffc43748 | 356 | break; |
5c36a0eb | 357 | case 'm': |
b549058b | 358 | ctl.weekstart = MONDAY; |
5c36a0eb | 359 | break; |
6dbe3af9 | 360 | case 'j': |
b549058b | 361 | ctl.julian = 1; |
71ff238e | 362 | ctl.day_width = DAY_LEN + 1; |
6dbe3af9 KZ |
363 | break; |
364 | case 'y': | |
7800509b MK |
365 | yflag = 1; |
366 | break; | |
367 | case 'Y': | |
368 | Yflag = 1; | |
369 | break; | |
370 | case 'n': | |
371 | ctl.num_months = strtou32_or_err(optarg, | |
372 | _("invalid month argument")); | |
6dbe3af9 | 373 | break; |
ccf3dd50 D |
374 | case 'S': |
375 | ctl.span_months = 1; | |
376 | break; | |
c36c4a4e | 377 | case 'w': |
aae4f87e | 378 | if (optarg) { |
ffc56357 | 379 | ctl.req.week = strtos32_or_err(optarg, |
aae4f87e | 380 | _("invalid week argument")); |
efafeaf6 SK |
381 | if (ctl.req.week < 1 || 54 < ctl.req.week) |
382 | errx(EXIT_FAILURE,_("illegal week value: use 1-54")); | |
aae4f87e | 383 | } |
b549058b | 384 | ctl.weektype = WEEK_NUM_US; /* default per weekstart */ |
c36c4a4e | 385 | break; |
7b353df2 | 386 | case OPT_COLOR: |
5d51dc2a | 387 | ctl.colormode = UL_COLORMODE_AUTO; |
201b39f0 | 388 | if (optarg) |
b549058b | 389 | ctl.colormode = colormode_or_err(optarg, |
201b39f0 | 390 | _("unsupported color mode")); |
7b353df2 | 391 | break; |
eb63b9b8 | 392 | case 'V': |
e421313d | 393 | printf(UTIL_LINUX_VERSION); |
37d6897f | 394 | return EXIT_SUCCESS; |
022df321 SK |
395 | case 'h': |
396 | usage(stdout); | |
6dbe3af9 | 397 | default: |
677ec86c | 398 | errtryhelp(EXIT_FAILURE); |
6dbe3af9 | 399 | } |
7800509b MK |
400 | } |
401 | ||
6dbe3af9 KZ |
402 | argc -= optind; |
403 | argv += optind; | |
404 | ||
b549058b | 405 | if (ctl.weektype) { |
ffc56357 | 406 | ctl.weektype = ctl.req.week & WEEK_NUM_MASK; |
b549058b | 407 | ctl.weektype |= (ctl.weekstart == MONDAY ? WEEK_NUM_ISO : WEEK_NUM_US); |
71ff238e SK |
408 | ctl.week_width = (ctl.day_width * DAYS_IN_WEEK) + WNUM_LEN; |
409 | } else | |
410 | ctl.week_width = ctl.day_width * DAYS_IN_WEEK; | |
c36c4a4e | 411 | |
cd28d6a4 KZ |
412 | if (argc == 1 && !isdigit_string(*argv)) { |
413 | usec_t x; | |
535fd6d2 | 414 | /* cal <timestamp> */ |
cd28d6a4 KZ |
415 | if (parse_timestamp(*argv, &x) == 0) |
416 | now = (time_t) (x / 1000000); | |
535fd6d2 KZ |
417 | /* cal <monthname> */ |
418 | else if ((ctl.req.month = monthname_to_number(&ctl, *argv)) > 0) | |
419 | time(&now); /* this year */ | |
cd28d6a4 | 420 | else |
535fd6d2 | 421 | errx(EXIT_FAILURE, _("failed to parse timestamp or unknown month name: %s"), *argv); |
cd28d6a4 KZ |
422 | argc = 0; |
423 | } else | |
424 | time(&now); | |
425 | ||
a43145e1 RP |
426 | local_time = localtime(&now); |
427 | ||
6dbe3af9 | 428 | switch(argc) { |
d7a92b89 | 429 | case 3: |
ffc56357 SK |
430 | ctl.req.day = strtos32_or_err(*argv++, _("illegal day value")); |
431 | if (ctl.req.day < 1 || DAYS_IN_MONTH < ctl.req.day) | |
5f845cb7 | 432 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), DAYS_IN_MONTH); |
d7a92b89 | 433 | /* FALLTHROUGH */ |
6dbe3af9 | 434 | case 2: |
731441ac KZ |
435 | if (isdigit(**argv)) |
436 | ctl.req.month = strtos32_or_err(*argv++, _("illegal month value: use 1-12")); | |
c49fb9ca KZ |
437 | else { |
438 | ctl.req.month = monthname_to_number(&ctl, *argv); | |
439 | if (ctl.req.month < 0) | |
440 | errx(EXIT_FAILURE, _("unknown month name: %s"), *argv); | |
441 | argv++; | |
442 | } | |
ffc56357 | 443 | if (ctl.req.month < 1 || MONTHS_IN_YEAR < ctl.req.month) |
022df321 | 444 | errx(EXIT_FAILURE, _("illegal month value: use 1-12")); |
6dbe3af9 KZ |
445 | /* FALLTHROUGH */ |
446 | case 1: | |
4a7424a5 | 447 | ctl.req.year = strtos32_or_err(*argv++, _("illegal year value")); |
ffc56357 | 448 | if (ctl.req.year < SMALLEST_YEAR) |
e44fe471 | 449 | errx(EXIT_FAILURE, _("illegal year value: use positive integer")); |
4a7424a5 SK |
450 | if (ctl.req.year == INT32_MAX) |
451 | errx(EXIT_FAILURE, _("illegal year value")); | |
ffc56357 SK |
452 | if (ctl.req.day) { |
453 | int dm = days_in_month[leap_year(ctl.req.year)][ctl.req.month]; | |
454 | if (ctl.req.day > dm) | |
022df321 | 455 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm); |
ffc56357 | 456 | ctl.req.day = day_in_year(ctl.req.day, ctl.req.month, ctl.req.year); |
4a7424a5 | 457 | } else if ((int32_t) (local_time->tm_year + 1900) == ctl.req.year) { |
ffc56357 | 458 | ctl.req.day = local_time->tm_yday + 1; |
d7a92b89 | 459 | } |
95f4adde SK |
460 | if (!ctl.req.month && !ctl.req.week) { |
461 | ctl.req.month = local_time->tm_mon + 1; | |
7800509b | 462 | yflag = 1; |
95f4adde | 463 | } |
6dbe3af9 KZ |
464 | break; |
465 | case 0: | |
ffc56357 SK |
466 | ctl.req.day = local_time->tm_yday + 1; |
467 | ctl.req.year = local_time->tm_year + 1900; | |
535fd6d2 KZ |
468 | if (!ctl.req.month) |
469 | ctl.req.month = local_time->tm_mon + 1; | |
6dbe3af9 KZ |
470 | break; |
471 | default: | |
022df321 | 472 | usage(stderr); |
6dbe3af9 | 473 | } |
aae4f87e | 474 | |
ffc56357 SK |
475 | if (0 < ctl.req.week) { |
476 | int yday = week_to_day(&ctl); | |
477 | int leap = leap_year(ctl.req.year); | |
478 | int m = 1; | |
c1732e62 | 479 | |
aae4f87e | 480 | if (yday < 1) |
4a7424a5 | 481 | errx(EXIT_FAILURE, _("illegal week value: year %d " |
c1732e62 | 482 | "doesn't have week %d"), |
ffc56357 | 483 | ctl.req.year, ctl.req.week); |
e1abe57e | 484 | while (m <= DECEMBER && yday > days_in_month[leap][m]) |
ffc56357 | 485 | yday -= days_in_month[leap][m++]; |
03f8bc1f | 486 | if (DECEMBER < m && ctl.weektype & WEEK_NUM_ISO) { |
c1732e62 KZ |
487 | /* In some years (e.g. 2010 in ISO mode) it's possible |
488 | * to have a remnant of week 53 starting the year yet | |
489 | * the year in question ends during 52, in this case | |
490 | * we're assuming that early remnant is being referred | |
491 | * to if 53 is given as argument. */ | |
e1abe57e | 492 | if (ctl.req.week != week_number(31, DECEMBER, ctl.req.year - 1, &ctl)) |
c1732e62 | 493 | errx(EXIT_FAILURE, |
4a7424a5 | 494 | _("illegal week value: year %d " |
c1732e62 | 495 | "doesn't have week %d"), |
ffc56357 | 496 | ctl.req.year, ctl.req.week); |
aae4f87e | 497 | } |
ffc56357 | 498 | if (!ctl.req.month) |
7800509b | 499 | ctl.req.month = MONTHS_IN_YEAR < m ? 1 : m; |
aae4f87e TK |
500 | } |
501 | ||
b549058b | 502 | headers_init(&ctl); |
6dbe3af9 | 503 | |
d0c9ddc3 | 504 | if (!colors_init(ctl.colormode, "cal")) { |
ffc56357 | 505 | ctl.req.day = 0; |
b549058b | 506 | ctl.weektype &= ~WEEK_NUM_MASK; |
aae4f87e | 507 | } |
d7a92b89 | 508 | |
7800509b | 509 | if (yflag || Yflag) { |
95f4adde | 510 | ctl.gutter_width = 3; |
7800509b MK |
511 | ctl.num_months = MONTHS_IN_YEAR; |
512 | if (yflag) { | |
513 | ctl.req.start_month = 1; /* start from Jan */ | |
514 | ctl.header_year = 1; /* print year number */ | |
515 | } | |
516 | } | |
517 | ||
518 | if (ctl.num_months > 1 && ctl.months_in_row == 0) | |
519 | ctl.months_in_row = ctl.julian ? MONTHS_IN_YEAR_ROW - 1 : | |
520 | MONTHS_IN_YEAR_ROW; | |
521 | else if (!ctl.months_in_row) | |
522 | ctl.months_in_row = 1; | |
523 | ||
524 | if (yflag || Yflag) | |
ffc56357 | 525 | yearly(&ctl); |
7800509b | 526 | else |
ffc56357 | 527 | monthly(&ctl); |
37d6897f KZ |
528 | |
529 | return EXIT_SUCCESS; | |
6dbe3af9 KZ |
530 | } |
531 | ||
3b66dfd6 | 532 | /* leap year -- account for gregorian reformation in 1752 */ |
4a7424a5 | 533 | static int leap_year(int32_t year) |
3b66dfd6 | 534 | { |
5f845cb7 | 535 | if (year <= REFORMATION_YEAR) |
3b66dfd6 SK |
536 | return !(year % 4); |
537 | else | |
538 | return ( !(year % 4) && (year % 100) ) || !(year % 400); | |
539 | } | |
540 | ||
731441ac KZ |
541 | static void init_monthnames(struct cal_control *ctl) |
542 | { | |
543 | size_t i; | |
544 | ||
545 | if (ctl->full_month[0] != '\0') | |
546 | return; /* already initialized */ | |
547 | ||
548 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
549 | ctl->full_month[i] = nl_langinfo(MON_1 + i); | |
550 | } | |
551 | ||
c8805632 KZ |
552 | static void init_abbr_monthnames(struct cal_control *ctl) |
553 | { | |
554 | size_t i; | |
555 | ||
556 | if (ctl->abbr_month[0] != '\0') | |
557 | return; /* already initialized */ | |
558 | ||
559 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
560 | ctl->abbr_month[i] = nl_langinfo(ABMON_1 + i); | |
561 | } | |
562 | ||
731441ac KZ |
563 | static int monthname_to_number(struct cal_control *ctl, const char *name) |
564 | { | |
565 | size_t i; | |
566 | ||
567 | init_monthnames(ctl); | |
731441ac KZ |
568 | for (i = 0; i < MONTHS_IN_YEAR; i++) |
569 | if (strcasecmp(ctl->full_month[i], name) == 0) | |
570 | return i + 1; | |
571 | ||
c8805632 KZ |
572 | init_abbr_monthnames(ctl); |
573 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
574 | if (strcasecmp(ctl->abbr_month[i], name) == 0) | |
575 | return i + 1; | |
576 | ||
c49fb9ca | 577 | return -EINVAL; |
731441ac KZ |
578 | } |
579 | ||
b549058b | 580 | static void headers_init(struct cal_control *ctl) |
6dbe3af9 | 581 | { |
71ff238e | 582 | size_t i, wd; |
b283141c | 583 | char *cur_dh = day_headings; |
efce94ec | 584 | char tmp[FMT_ST_CHARS]; |
06fa5817 | 585 | int year_len; |
efce94ec | 586 | |
e671a62e | 587 | year_len = snprintf(tmp, sizeof(tmp), "%04d", ctl->req.year); |
33c17354 | 588 | |
06fa5817 YK |
589 | if (year_len < 0 || (size_t)year_len >= sizeof(tmp)) { |
590 | /* XXX impossible error */ | |
591 | return; | |
592 | } | |
593 | ||
5f845cb7 | 594 | for (i = 0; i < DAYS_IN_WEEK; i++) { |
add1924d | 595 | size_t space_left; |
b549058b | 596 | wd = (i + ctl->weekstart) % DAYS_IN_WEEK; |
33c17354 SK |
597 | |
598 | if (i) | |
599 | strcat(cur_dh++, " "); | |
add1924d KZ |
600 | space_left = sizeof(day_headings) - (cur_dh - day_headings); |
601 | ||
71ff238e | 602 | if (space_left <= (ctl->day_width - 1)) |
33c17354 | 603 | break; |
add1924d | 604 | cur_dh += center_str(nl_langinfo(ABDAY_1 + wd), cur_dh, |
71ff238e | 605 | space_left, ctl->day_width - 1); |
33c17354 SK |
606 | } |
607 | ||
731441ac KZ |
608 | init_monthnames(ctl); |
609 | ||
efce94ec | 610 | for (i = 0; i < MONTHS_IN_YEAR; i++) { |
efce94ec SK |
611 | /* The +1 after year_len is space in between month and year. */ |
612 | if (ctl->week_width < strlen(ctl->full_month[i]) + year_len + 1) | |
613 | ctl->header_hint = 1; | |
614 | } | |
6dbe3af9 KZ |
615 | } |
616 | ||
852c8d21 | 617 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl) |
d4be073d | 618 | { |
852c8d21 SK |
619 | int first_week_day = day_in_week(1, month->month, month->year); |
620 | int month_days; | |
621 | int i, j, weeklines = 0; | |
622 | ||
623 | if (ctl->julian) | |
624 | j = day_in_year(1, month->month, month->year); | |
625 | else | |
626 | j = 1; | |
627 | month_days = j + days_in_month[leap_year(month->year)][month->month]; | |
628 | ||
629 | /* True when Sunday is not first day in the output week. */ | |
630 | if (ctl->weekstart) { | |
631 | first_week_day -= ctl->weekstart; | |
632 | if (first_week_day < 0) | |
633 | first_week_day = DAYS_IN_WEEK - ctl->weekstart; | |
634 | month_days += ctl->weekstart - 1; | |
635 | } | |
636 | ||
637 | /* Fill day array. */ | |
638 | for (i = 0; i < MAXDAYS; i++) { | |
639 | if (0 < first_week_day) { | |
640 | month->days[i] = SPACE; | |
641 | first_week_day--; | |
642 | continue; | |
643 | } | |
644 | if (j < month_days) { | |
e1abe57e | 645 | if (month->year == REFORMATION_YEAR && month->month == REFORMATION_MONTH && (j == 3 || j == 247)) |
852c8d21 SK |
646 | j += NUMBER_MISSING_DAYS; |
647 | month->days[i] = j; | |
648 | j++; | |
649 | continue; | |
650 | } | |
651 | month->days[i] = SPACE; | |
652 | weeklines++; | |
653 | } | |
66ee8158 | 654 | |
852c8d21 SK |
655 | /* Add week numbers */ |
656 | if (ctl->weektype) { | |
657 | int weeknum = week_number(1, month->month, month->year, ctl); | |
658 | weeklines = MAXDAYS / DAYS_IN_WEEK - weeklines / DAYS_IN_WEEK; | |
659 | for (i = 0; i < MAXDAYS / DAYS_IN_WEEK; i++) { | |
efafeaf6 SK |
660 | if (0 < weeklines) { |
661 | if (52 < weeknum) | |
662 | weeknum = week_number(month->days[i * DAYS_IN_WEEK], month->month, month->year, ctl); | |
852c8d21 | 663 | month->weeks[i] = weeknum++; |
efafeaf6 | 664 | } else |
852c8d21 SK |
665 | month->weeks[i] = SPACE; |
666 | weeklines--; | |
852c8d21 | 667 | } |
66ee8158 KZ |
668 | } |
669 | } | |
670 | ||
852c8d21 SK |
671 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl) |
672 | { | |
673 | char out[FMT_ST_CHARS]; | |
674 | struct cal_month *i; | |
675 | ||
7800509b | 676 | if (ctl->header_hint || ctl->header_year) { |
852c8d21 SK |
677 | for (i = month; i; i = i->next) { |
678 | sprintf(out, _("%s"), ctl->full_month[i->month - 1]); | |
95f4adde | 679 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
852c8d21 | 680 | } |
7800509b | 681 | if (!ctl->header_year) { |
07ac4aa9 | 682 | my_putstring("\n"); |
95f4adde | 683 | for (i = month; i; i = i->next) { |
e671a62e | 684 | sprintf(out, _("%04d"), i->year); |
95f4adde SK |
685 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
686 | } | |
852c8d21 SK |
687 | } |
688 | } else { | |
689 | for (i = month; i; i = i->next) { | |
e671a62e | 690 | sprintf(out, _("%s %04d"), ctl->full_month[i->month - 1], i->year); |
95f4adde | 691 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
852c8d21 SK |
692 | } |
693 | } | |
07ac4aa9 | 694 | my_putstring("\n"); |
852c8d21 SK |
695 | for (i = month; i; i = i->next) { |
696 | if (ctl->weektype) { | |
697 | if (ctl->julian) | |
07ac4aa9 | 698 | sprintf(out, "%*s%s", (int)ctl->day_width - 1, "", day_headings); |
852c8d21 | 699 | else |
07ac4aa9 RM |
700 | sprintf(out, "%*s%s", (int)ctl->day_width, "", day_headings); |
701 | my_putstring(out); | |
852c8d21 | 702 | } else |
07ac4aa9 RM |
703 | my_putstring(day_headings); |
704 | if (i->next != NULL) { | |
705 | sprintf(out, "%*s", ctl->gutter_width, ""); | |
706 | my_putstring(out); | |
707 | } | |
852c8d21 | 708 | } |
07ac4aa9 | 709 | my_putstring("\n"); |
852c8d21 SK |
710 | } |
711 | ||
712 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl) | |
713 | { | |
07ac4aa9 | 714 | char out[FMT_ST_CHARS]; |
852c8d21 SK |
715 | int reqday, week_line, d; |
716 | int skip; | |
717 | struct cal_month *i; | |
718 | ||
719 | for (week_line = 0; week_line < MAXDAYS / DAYS_IN_WEEK; week_line++) { | |
720 | for (i = month; i; i = i->next) { | |
721 | /* Determine the day that should be highlighted. */ | |
722 | reqday = 0; | |
723 | if (i->month == ctl->req.month && i->year == ctl->req.year) { | |
724 | if (ctl->julian) | |
725 | reqday = ctl->req.day; | |
726 | else | |
727 | reqday = | |
728 | ctl->req.day + 1 - day_in_year(1, i->month, | |
729 | i->year); | |
730 | } | |
731 | ||
732 | if (ctl->weektype) { | |
733 | if (0 < i->weeks[week_line]) { | |
734 | if ((ctl->weektype & WEEK_NUM_MASK) == | |
735 | i->weeks[week_line]) | |
07ac4aa9 | 736 | sprintf(out, "%s%2d%s", Senter, i->weeks[week_line], |
852c8d21 SK |
737 | Sexit); |
738 | else | |
07ac4aa9 | 739 | sprintf(out, "%2d", i->weeks[week_line]); |
852c8d21 | 740 | } else |
07ac4aa9 RM |
741 | sprintf(out, "%2s", ""); |
742 | my_putstring(out); | |
852c8d21 SK |
743 | skip = ctl->day_width; |
744 | } else | |
745 | /* First day of the week is one char narrower than the other days, | |
746 | * unless week number is printed. */ | |
747 | skip = ctl->day_width - 1; | |
748 | ||
749 | for (d = DAYS_IN_WEEK * week_line; | |
750 | d < DAYS_IN_WEEK * week_line + DAYS_IN_WEEK; d++) { | |
751 | if (0 < i->days[d]) { | |
752 | if (reqday == i->days[d]) | |
07ac4aa9 | 753 | sprintf(out, "%*s%s%*d%s", skip - (ctl->julian ? 3 : 2), |
852c8d21 SK |
754 | "", Senter, (ctl->julian ? 3 : 2), |
755 | i->days[d], Sexit); | |
756 | else | |
07ac4aa9 | 757 | sprintf(out, "%*d", skip, i->days[d]); |
852c8d21 | 758 | } else |
07ac4aa9 RM |
759 | sprintf(out, "%*s", skip, ""); |
760 | my_putstring(out); | |
852c8d21 SK |
761 | if (skip < (int)ctl->day_width) |
762 | skip++; | |
763 | } | |
07ac4aa9 RM |
764 | if (i->next != NULL) { |
765 | sprintf(out, "%*s", ctl->gutter_width, ""); | |
766 | my_putstring(out); | |
767 | } | |
768 | } | |
769 | if (i == NULL) { | |
7800509b MK |
770 | int extra = ctl->num_months > 3 ? 0 : 1; |
771 | sprintf(out, "%*s\n", ctl->gutter_width - extra, ""); | |
07ac4aa9 | 772 | my_putstring(out); |
852c8d21 | 773 | } |
852c8d21 SK |
774 | } |
775 | } | |
776 | ||
777 | static void monthly(const struct cal_control *ctl) | |
778 | { | |
7800509b | 779 | struct cal_month m1,m2,m3, *m; |
ccf3dd50 | 780 | int i, rows, new_month, month = ctl->req.start_month ? ctl->req.start_month : ctl->req.month; |
7800509b MK |
781 | int32_t year = ctl->req.year; |
782 | ||
ccf3dd50 D |
783 | /* cal -3, cal -Y --span, etc. */ |
784 | if (ctl->span_months) { | |
785 | new_month = month - ctl->num_months / 2; | |
786 | if (new_month < 1) { | |
787 | month = new_month + MONTHS_IN_YEAR; | |
7800509b | 788 | year--; |
ccf3dd50 D |
789 | } |
790 | else | |
791 | month = new_month; | |
7800509b | 792 | } |
f60117b5 | 793 | |
7800509b MK |
794 | m1.next = (ctl->months_in_row > 1) ? &m2 : NULL; |
795 | m2.next = (ctl->months_in_row > 2) ? &m3 : NULL; | |
f60117b5 SK |
796 | m3.next = NULL; |
797 | ||
7800509b MK |
798 | rows = (ctl->num_months - 1) / ctl->months_in_row; |
799 | for (i = 0; i < rows + 1 ; i++){ | |
800 | if (i == rows){ | |
801 | switch (ctl->num_months % ctl->months_in_row){ | |
802 | case 1: | |
803 | m1.next = NULL; | |
804 | /* fallthrough */ | |
805 | case 2: | |
806 | m2.next = NULL; | |
807 | /* fallthrough */ | |
808 | } | |
809 | } | |
810 | for (m = &m1; m; m = m->next){ | |
811 | m->month = month++; | |
812 | m->year = year; | |
813 | if (MONTHS_IN_YEAR < month) { | |
814 | year++; | |
815 | month = 1; | |
816 | } | |
817 | cal_fill_month(m, ctl); | |
818 | } | |
819 | cal_output_header(&m1, ctl); | |
820 | cal_output_months(&m1, ctl); | |
e66ba1bf | 821 | } |
6dbe3af9 KZ |
822 | } |
823 | ||
ffc56357 | 824 | static void yearly(const struct cal_control *ctl) |
d4be073d | 825 | { |
95f4adde SK |
826 | char out[FMT_ST_CHARS]; |
827 | int year_width = 0; | |
add1924d | 828 | |
7800509b | 829 | year_width += (ctl->week_width + 1) * (ctl->julian ? 2 : 3); |
95f4adde SK |
830 | if (ctl->julian) |
831 | year_width--; | |
7800509b MK |
832 | |
833 | if (ctl->header_year) { | |
e671a62e | 834 | sprintf(out, "%04d", ctl->req.year); |
7800509b MK |
835 | center(out, year_width, 0); |
836 | my_putstring("\n\n"); | |
d162fcb5 | 837 | } |
7800509b MK |
838 | monthly(ctl); |
839 | ||
95f4adde | 840 | /* Is empty line at the end year output really needed? */ |
07ac4aa9 | 841 | my_putstring("\n"); |
6dbe3af9 KZ |
842 | } |
843 | ||
844 | /* | |
845 | * day_in_year -- | |
846 | * return the 1 based day number within the year | |
847 | */ | |
4a7424a5 | 848 | static int day_in_year(int day, int month, int32_t year) |
d4be073d | 849 | { |
6dbe3af9 KZ |
850 | int i, leap; |
851 | ||
852 | leap = leap_year(year); | |
853 | for (i = 1; i < month; i++) | |
854 | day += days_in_month[leap][i]; | |
d162fcb5 | 855 | return day; |
6dbe3af9 KZ |
856 | } |
857 | ||
858 | /* | |
859 | * day_in_week | |
860 | * return the 0 based day number for any date from 1 Jan. 1 to | |
861 | * 31 Dec. 9999. Assumes the Gregorian reformation eliminates | |
d68f076f SK |
862 | * 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday |
863 | * during the period of 11 days. | |
6dbe3af9 | 864 | */ |
4a7424a5 | 865 | static int day_in_week(int day, int month, int32_t year) |
91ac9ef5 SK |
866 | { |
867 | static const int reform[] = { | |
868 | SUNDAY, WEDNESDAY, TUESDAY, FRIDAY, SUNDAY, WEDNESDAY, | |
869 | FRIDAY, MONDAY, THURSDAY, SATURDAY, TUESDAY, THURSDAY | |
870 | }; | |
871 | static const int old[] = { | |
872 | FRIDAY, MONDAY, SUNDAY, WEDNESDAY, FRIDAY, MONDAY, | |
873 | WEDNESDAY, SATURDAY, TUESDAY, THURSDAY, SUNDAY, TUESDAY | |
874 | }; | |
e1abe57e SK |
875 | if (year != REFORMATION_YEAR + 1) |
876 | year -= month < MARCH; | |
91ac9ef5 | 877 | else |
e1abe57e | 878 | year -= (month < MARCH) + 14; |
ff90b006 | 879 | if (REFORMATION_YEAR < year |
e1abe57e SK |
880 | || (year == REFORMATION_YEAR && REFORMATION_MONTH < month) |
881 | || (year == REFORMATION_YEAR && month == REFORMATION_MONTH && 13 < day)) { | |
a79735f6 | 882 | int64_t long_year = year; |
26f3a386 | 883 | return (long_year + (year / 4) - (year / 100) + (year / 400) + reform[month - 1] + |
e1abe57e | 884 | day) % DAYS_IN_WEEK; |
26f3a386 | 885 | } |
ff90b006 | 886 | if (year < REFORMATION_YEAR |
e1abe57e SK |
887 | || (year == REFORMATION_YEAR && month < REFORMATION_MONTH) |
888 | || (year == REFORMATION_YEAR && month == REFORMATION_MONTH && day < 3)) | |
889 | return (year + year / 4 + old[month - 1] + day) % DAYS_IN_WEEK; | |
91ac9ef5 | 890 | return NONEDAY; |
6dbe3af9 KZ |
891 | } |
892 | ||
c36c4a4e TK |
893 | /* |
894 | * week_number | |
efafeaf6 | 895 | * return the week number of a given date, 1..54. |
c36c4a4e TK |
896 | * Supports ISO-8601 and North American modes. |
897 | * Day may be given as Julian day of the year mode, in which | |
898 | * case the month is disregarded entirely. | |
899 | */ | |
4a7424a5 | 900 | static int week_number(int day, int month, int32_t year, const struct cal_control *ctl) |
c1732e62 KZ |
901 | { |
902 | int fday = 0, yday; | |
e1abe57e | 903 | const int wday = day_in_week(1, JANUARY, year); |
c1732e62 | 904 | |
b549058b | 905 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 | 906 | fday = wday + (wday >= FRIDAY ? -2 : 5); |
efafeaf6 SK |
907 | else { |
908 | /* WEEK_NUM_US: Jan 1 is always First week, that may | |
909 | * begin previous year. That means there is very seldom | |
910 | * more than 52 weeks, */ | |
911 | fday = wday + 6; | |
912 | } | |
c1732e62 KZ |
913 | /* For julian dates the month can be set to 1, the global julian |
914 | * variable cannot be relied upon here, because we may recurse | |
915 | * internally for 31.12. which would not work. */ | |
e1abe57e SK |
916 | if (day > DAYS_IN_MONTH) |
917 | month = JANUARY; | |
c1732e62 | 918 | |
c36c4a4e | 919 | yday = day_in_year(day,month,year); |
74ce680a SK |
920 | if (year == REFORMATION_YEAR && yday >= YDAY_AFTER_MISSING) |
921 | fday -= NUMBER_MISSING_DAYS; | |
c1732e62 KZ |
922 | |
923 | /* Last year is last year */ | |
e1abe57e SK |
924 | if (yday + fday < DAYS_IN_WEEK) |
925 | return week_number(31, DECEMBER, year - 1, ctl); | |
c1732e62 KZ |
926 | |
927 | /* Or it could be part of the next year. The reformation year had less | |
928 | * days than 365 making this check invalid, but reformation year ended | |
929 | * on Sunday and in week 51, so it's ok here. */ | |
b549058b | 930 | if (ctl->weektype == WEEK_NUM_ISO && yday >= 363 |
c1732e62 KZ |
931 | && day_in_week(day, month, year) >= MONDAY |
932 | && day_in_week(day, month, year) <= WEDNESDAY | |
e1abe57e SK |
933 | && day_in_week(31, DECEMBER, year) >= MONDAY |
934 | && day_in_week(31, DECEMBER, year) <= WEDNESDAY) | |
935 | return week_number(1, JANUARY, year + 1, ctl); | |
c1732e62 | 936 | |
e1abe57e | 937 | return (yday + fday) / DAYS_IN_WEEK; |
c36c4a4e TK |
938 | } |
939 | ||
aae4f87e TK |
940 | /* |
941 | * week_to_day | |
942 | * return the yday of the first day in a given week inside | |
943 | * the given year. This may be something other than Monday | |
944 | * for ISO-8601 modes. For North American numbering this | |
945 | * always returns a Sunday. | |
946 | */ | |
ffc56357 | 947 | static int week_to_day(const struct cal_control *ctl) |
c1732e62 | 948 | { |
aae4f87e | 949 | int yday, wday; |
c1732e62 | 950 | |
e1abe57e SK |
951 | wday = day_in_week(1, JANUARY, ctl->req.year); |
952 | yday = ctl->req.week * DAYS_IN_WEEK - wday; | |
c1732e62 | 953 | |
b549058b | 954 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 KZ |
955 | yday -= (wday >= FRIDAY ? -2 : 5); |
956 | else | |
957 | yday -= (wday == SUNDAY ? 6 : -1); /* WEEK_NUM_US */ | |
958 | if (yday <= 0) | |
aae4f87e TK |
959 | return 1; |
960 | ||
961 | return yday; | |
962 | } | |
963 | ||
d162fcb5 KZ |
964 | /* |
965 | * Center string, handling multibyte characters appropriately. | |
966 | * In addition if the string is too large for the width it's truncated. | |
ff87defc | 967 | * The number of trailing spaces may be 1 less than the number of leading spaces. |
d162fcb5 | 968 | */ |
d4be073d KZ |
969 | static int center_str(const char* src, char* dest, |
970 | size_t dest_size, size_t width) | |
d162fcb5 | 971 | { |
104b92f8 PB |
972 | return mbsalign(src, dest, dest_size, &width, |
973 | MBS_ALIGN_CENTER, MBA_UNIBYTE_FALLBACK); | |
d162fcb5 KZ |
974 | } |
975 | ||
d4be073d | 976 | static void center(const char *str, size_t len, int separate) |
6dbe3af9 | 977 | { |
d162fcb5 | 978 | char lineout[FMT_ST_CHARS]; |
e66ba1bf | 979 | |
17282538 | 980 | center_str(str, lineout, ARRAY_SIZE(lineout), len); |
e66ba1bf KZ |
981 | my_putstring(lineout); |
982 | ||
983 | if (separate) { | |
984 | snprintf(lineout, sizeof(lineout), "%*s", separate, ""); | |
985 | my_putstring(lineout); | |
986 | } | |
6dbe3af9 KZ |
987 | } |
988 | ||
022df321 | 989 | static void __attribute__ ((__noreturn__)) usage(FILE * out) |
6dbe3af9 | 990 | { |
201d43fd SK |
991 | fputs(USAGE_HEADER, out); |
992 | fprintf(out, _(" %s [options] [[[day] month] year]\n"), program_invocation_short_name); | |
535fd6d2 | 993 | fprintf(out, _(" %s [options] <timestamp|monthname>\n"), program_invocation_short_name); |
d4be073d | 994 | |
233ad1fa PB |
995 | fputs(USAGE_SEPARATOR, out); |
996 | fputs(_("Display a calendar, or some part of it.\n"), out); | |
997 | fputs(_("Without any arguments, display the current month.\n"), out); | |
998 | ||
201d43fd | 999 | fputs(USAGE_OPTIONS, out); |
233ad1fa PB |
1000 | fputs(_(" -1, --one show only a single month (default)\n"), out); |
1001 | fputs(_(" -3, --three show three months spanning the date\n"), out); | |
7800509b | 1002 | fputs(_(" -n, --months <num> show num months starting with date's month\n"), out); |
ccf3dd50 | 1003 | fputs(_(" -S, --span span the date when displaying multiple months\n"), out); |
201d43fd SK |
1004 | fputs(_(" -s, --sunday Sunday as first day of week\n"), out); |
1005 | fputs(_(" -m, --monday Monday as first day of week\n"), out); | |
1006 | fputs(_(" -j, --julian output Julian dates\n"), out); | |
233ad1fa | 1007 | fputs(_(" -y, --year show the whole year\n"), out); |
7800509b | 1008 | fputs(_(" -Y, --twelve show the next twelve months\n"), out); |
af7c483e | 1009 | fputs(_(" -w, --week[=<num>] show US or ISO-8601 week numbers\n"), out); |
201d43fd | 1010 | fputs(_(" --color[=<when>] colorize messages (auto, always or never)\n"), out); |
5d51dc2a KZ |
1011 | fprintf(out, |
1012 | " %s\n", USAGE_COLORS_DEFAULT); | |
d4be073d | 1013 | |
201d43fd SK |
1014 | fputs(USAGE_SEPARATOR, out); |
1015 | fputs(USAGE_HELP, out); | |
1016 | fputs(USAGE_VERSION, out); | |
1017 | fprintf(out, USAGE_MAN_TAIL("cal(1)")); | |
d4be073d | 1018 | |
022df321 | 1019 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); |
6dbe3af9 | 1020 | } |