]>
Commit | Line | Data |
---|---|---|
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" |
8315a2ff KZ |
78 | #include "ttyutils.h" |
79 | ||
80 | #define DOY_MONTH_WIDTH 27 /* -j month width */ | |
81 | #define DOM_MONTH_WIDTH 20 /* month width */ | |
726f69e2 | 82 | |
2a4b073e KZ |
83 | static int has_term = 0; |
84 | static const char *Senter = "", *Sexit = ""; /* enter and exit standout mode */ | |
85 | ||
310170b8 | 86 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
3947ca4c KZ |
87 | # if defined(HAVE_NCURSESW_TERM_H) |
88 | # include <ncursesw/term.h> | |
18451b2c KZ |
89 | # elif defined(HAVE_NCURSES_TERM_H) |
90 | # include <ncurses/term.h> | |
3947ca4c KZ |
91 | # elif defined(HAVE_TERM_H) |
92 | # include <term.h> | |
4aefe5e8 | 93 | # endif |
b4566a8a | 94 | #endif |
4aefe5e8 | 95 | |
58149472 KZ |
96 | static int setup_terminal(char *term |
97 | #if !defined(HAVE_LIBNCURSES) && !defined(HAVE_LIBNCURSESW) | |
98 | __attribute__((__unused__)) | |
99 | #endif | |
100 | ) | |
4aefe5e8 | 101 | { |
b4566a8a | 102 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
103 | int ret; |
104 | ||
18451b2c | 105 | if (setupterm(term, STDOUT_FILENO, &ret) != 0 || ret != 1) |
2a4b073e | 106 | return -1; |
b4566a8a | 107 | #endif |
2a4b073e | 108 | return 0; |
d162fcb5 KZ |
109 | } |
110 | ||
4aefe5e8 SK |
111 | static void my_putstring(char *s) |
112 | { | |
b4566a8a | 113 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
114 | if (has_term) |
115 | putp(s); | |
116 | else | |
b4566a8a | 117 | #endif |
2a4b073e | 118 | fputs(s, stdout); |
d162fcb5 KZ |
119 | } |
120 | ||
58149472 | 121 | static const char *my_tgetstr(char *ss |
18451b2c | 122 | #if !defined(HAVE_LIBNCURSES) && !defined(HAVE_LIBNCURSESW) |
58149472 KZ |
123 | __attribute__((__unused__)) |
124 | #endif | |
125 | ) | |
4aefe5e8 | 126 | { |
2a4b073e KZ |
127 | const char *ret = NULL; |
128 | ||
b4566a8a | 129 | #if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) |
2a4b073e KZ |
130 | if (has_term) |
131 | ret = tigetstr(ss); | |
b4566a8a | 132 | #endif |
4aefe5e8 SK |
133 | if (!ret || ret == (char *)-1) |
134 | return ""; | |
d4be073d | 135 | return ret; |
d162fcb5 KZ |
136 | } |
137 | ||
e8f26419 | 138 | #include "widechar.h" |
95f1bdee | 139 | |
ae51e7b4 WP |
140 | enum { |
141 | GREGORIAN = INT32_MIN, | |
142 | ISO = INT32_MIN, | |
143 | GB1752 = 1752, | |
144 | DEFAULT_REFORM_YEAR = 1752, | |
145 | JULIAN = INT32_MAX | |
146 | }; | |
147 | ||
5f845cb7 SK |
148 | enum { |
149 | SUNDAY = 0, | |
150 | MONDAY, | |
151 | TUESDAY, | |
152 | WEDNESDAY, | |
153 | THURSDAY, | |
154 | FRIDAY, | |
155 | SATURDAY, | |
d68f076f SK |
156 | DAYS_IN_WEEK, |
157 | NONEDAY | |
5f845cb7 | 158 | }; |
6dbe3af9 | 159 | |
e1abe57e SK |
160 | enum { |
161 | JANUARY = 1, | |
162 | FEBRUARY, | |
163 | MARCH, | |
164 | APRIL, | |
165 | MAY, | |
166 | JUNE, | |
167 | JULY, | |
168 | AUGUST, | |
169 | SEPTEMBER, | |
170 | OCTOBER, | |
171 | NOVEMBER, | |
172 | DECEMBER | |
173 | }; | |
174 | ||
e1abe57e | 175 | #define REFORMATION_MONTH SEPTEMBER |
d162fcb5 | 176 | #define NUMBER_MISSING_DAYS 11 /* 11 day correction */ |
c36c4a4e | 177 | #define YDAY_AFTER_MISSING 258 /* 14th in Sep 1752 */ |
6dbe3af9 | 178 | |
e1abe57e | 179 | #define MONTHS_IN_YEAR DECEMBER |
5f845cb7 | 180 | #define DAYS_IN_MONTH 31 |
f06602a4 | 181 | #define MAXDAYS 42 /* slots in a month array */ |
6dbe3af9 KZ |
182 | #define SPACE -1 /* used in day array */ |
183 | ||
5f845cb7 | 184 | #define SMALLEST_YEAR 1 |
5f845cb7 SK |
185 | |
186 | #define DAY_LEN 3 /* 3 spaces per day */ | |
187 | #define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN) | |
7800509b | 188 | #define MONTHS_IN_YEAR_ROW 3 /* month columns in year view */ |
aae4f87e | 189 | #define WNUM_LEN 3 |
5f845cb7 | 190 | |
5f845cb7 | 191 | #define FMT_ST_CHARS 300 /* 90 suffices in most locales */ |
5f845cb7 | 192 | |
1beb933e | 193 | static const int days_in_month[2][13] = { |
6dbe3af9 KZ |
194 | {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, |
195 | {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, | |
196 | }; | |
197 | ||
c36c4a4e TK |
198 | enum { |
199 | WEEK_NUM_DISABLED = 0, | |
aae4f87e TK |
200 | WEEK_NUM_MASK=0xff, |
201 | WEEK_NUM_ISO=0x100, | |
202 | WEEK_NUM_US=0x200, | |
c36c4a4e | 203 | }; |
e8f26419 KZ |
204 | |
205 | /* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */ | |
71ff238e | 206 | static char day_headings[(WEEK_LEN + 1) * 6 + 1]; |
6dbe3af9 | 207 | |
ffc56357 SK |
208 | struct cal_request { |
209 | int day; | |
210 | int month; | |
4a7424a5 | 211 | int32_t year; |
ffc56357 | 212 | int week; |
7800509b | 213 | int start_month; |
ffc56357 SK |
214 | }; |
215 | ||
b549058b SK |
216 | struct cal_control { |
217 | const char *full_month[MONTHS_IN_YEAR]; /* month names */ | |
c8805632 KZ |
218 | const char *abbr_month[MONTHS_IN_YEAR]; /* abbreviated month names */ |
219 | ||
db9baa8a | 220 | int reform_year; /* Gregorian reform year */ |
b549058b | 221 | int colormode; /* day and week number highlight */ |
12f17a23 | 222 | int num_months; /* number of requested months */ |
d4cb626d | 223 | int span_months; /* span the date */ |
7800509b | 224 | int months_in_row; /* number of months horizontally in print out */ |
b549058b SK |
225 | int weekstart; /* day the week starts, often Sun or Mon */ |
226 | int weektype; /* WEEK_TYPE_{NONE,ISO,US} */ | |
71ff238e SK |
227 | size_t day_width; /* day width in characters in printout */ |
228 | size_t week_width; /* 7 * day_width + possible week num */ | |
95f4adde | 229 | int gutter_width; /* spaces in between horizontal month outputs */ |
ffc56357 | 230 | struct cal_request req; /* the times user is interested */ |
b549058b | 231 | unsigned int julian:1, /* julian output */ |
7800509b | 232 | header_year:1, /* print year number */ |
efce94ec | 233 | header_hint:1; /* does month name + year need two lines to fit */ |
b549058b | 234 | }; |
6dbe3af9 | 235 | |
852c8d21 SK |
236 | struct cal_month { |
237 | int days[MAXDAYS]; /* the day numbers, or SPACE */ | |
238 | int weeks[MAXDAYS / DAYS_IN_WEEK]; | |
239 | int month; | |
4a7424a5 | 240 | int32_t year; |
852c8d21 SK |
241 | struct cal_month *next; |
242 | }; | |
243 | ||
5f845cb7 | 244 | /* function prototypes */ |
db9baa8a | 245 | static int leap_year(const struct cal_control *ctl, int32_t year); |
731441ac | 246 | static int monthname_to_number(struct cal_control *ctl, const char *name); |
b549058b | 247 | static void headers_init(struct cal_control *ctl); |
852c8d21 SK |
248 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl); |
249 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl); | |
250 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl); | |
ffc56357 | 251 | static void monthly(const struct cal_control *ctl); |
ffc56357 | 252 | static void yearly(const struct cal_control *ctl); |
db9baa8a WP |
253 | static int day_in_year(const struct cal_control *ctl, int day, |
254 | int month, int32_t year); | |
255 | static int day_in_week(const struct cal_control *ctl, int day, | |
256 | int month, int32_t year); | |
4a7424a5 | 257 | static int week_number(int day, int month, int32_t year, const struct cal_control *ctl); |
ffc56357 | 258 | static int week_to_day(const struct cal_control *ctl); |
0106c9e2 SK |
259 | static int center_str(const char *src, char *dest, size_t dest_size, size_t width); |
260 | static void center(const char *str, size_t len, int separate); | |
ae51e7b4 | 261 | static int parse_reform_year(const char *reform_year); |
6e1eda6f | 262 | static void __attribute__((__noreturn__)) usage(void); |
6dbe3af9 | 263 | |
b9d9ab7d KZ |
264 | #ifdef TEST_CAL |
265 | static time_t cal_time(time_t *t) | |
266 | { | |
267 | char *str = getenv("CAL_TEST_TIME"); | |
268 | ||
269 | if (str) { | |
270 | uint64_t x = strtou64_or_err(str, "failed to parse CAL_TEST_TIME"); | |
271 | ||
272 | *t = x; | |
273 | return *t; | |
274 | } | |
275 | ||
276 | return time(t); | |
277 | } | |
278 | #else | |
279 | # define cal_time(t) time(t) | |
280 | #endif | |
281 | ||
d4be073d KZ |
282 | int main(int argc, char **argv) |
283 | { | |
6dbe3af9 | 284 | struct tm *local_time; |
58149472 | 285 | char *term; |
6dbe3af9 | 286 | time_t now; |
7800509b | 287 | int ch = 0, yflag = 0, Yflag = 0; |
db9baa8a | 288 | |
b549058b | 289 | static struct cal_control ctl = { |
ae51e7b4 | 290 | .reform_year = DEFAULT_REFORM_YEAR, |
b549058b | 291 | .weekstart = SUNDAY, |
d4cb626d | 292 | .span_months = 0, |
d0c9ddc3 | 293 | .colormode = UL_COLORMODE_UNDEF, |
71ff238e | 294 | .weektype = WEEK_NUM_DISABLED, |
ffc56357 | 295 | .day_width = DAY_LEN, |
95f4adde | 296 | .gutter_width = 2, |
ffc56357 SK |
297 | .req.day = 0, |
298 | .req.month = 0 | |
b549058b | 299 | }; |
7b353df2 SK |
300 | |
301 | enum { | |
ae51e7b4 WP |
302 | OPT_COLOR = CHAR_MAX + 1, |
303 | OPT_ISO, | |
304 | OPT_REFORM | |
7b353df2 | 305 | }; |
eb63b9b8 | 306 | |
022df321 SK |
307 | static const struct option longopts[] = { |
308 | {"one", no_argument, NULL, '1'}, | |
309 | {"three", no_argument, NULL, '3'}, | |
310 | {"sunday", no_argument, NULL, 's'}, | |
311 | {"monday", no_argument, NULL, 'm'}, | |
312 | {"julian", no_argument, NULL, 'j'}, | |
7800509b | 313 | {"months", required_argument, NULL, 'n'}, |
ccf3dd50 | 314 | {"span", no_argument, NULL, 'S'}, |
022df321 | 315 | {"year", no_argument, NULL, 'y'}, |
aae4f87e | 316 | {"week", optional_argument, NULL, 'w'}, |
7b353df2 | 317 | {"color", optional_argument, NULL, OPT_COLOR}, |
ae51e7b4 WP |
318 | {"reform", required_argument, NULL, OPT_REFORM}, |
319 | {"iso", no_argument, NULL, OPT_ISO}, | |
022df321 | 320 | {"version", no_argument, NULL, 'V'}, |
7800509b | 321 | {"twelve", no_argument, NULL, 'Y'}, |
022df321 SK |
322 | {"help", no_argument, NULL, 'h'}, |
323 | {NULL, 0, NULL, 0} | |
324 | }; | |
325 | ||
a7349ee3 | 326 | static const ul_excl_t excl[] = { /* rows and cols in ASCII order */ |
7800509b MK |
327 | { 'Y','n','y' }, |
328 | { 0 } | |
329 | }; | |
330 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
331 | ||
7eda085c KZ |
332 | setlocale(LC_ALL, ""); |
333 | bindtextdomain(PACKAGE, LOCALEDIR); | |
334 | textdomain(PACKAGE); | |
2c308875 | 335 | close_stdout_atexit(); |
e8f26419 | 336 | |
58149472 KZ |
337 | term = getenv("TERM"); |
338 | if (term) { | |
339 | has_term = setup_terminal(term) == 0; | |
340 | if (has_term) { | |
341 | Senter = my_tgetstr("smso"); | |
342 | Sexit = my_tgetstr("rmso"); | |
d162fcb5 KZ |
343 | } |
344 | } | |
d162fcb5 | 345 | |
612721db | 346 | /* |
0a9bead0 PB |
347 | * The traditional Unix cal utility starts the week at Sunday, |
348 | * while ISO 8601 starts at Monday. We read the start day from | |
349 | * the locale database, which can be overridden with the | |
350 | * -s (Sunday) or -m (Monday) options. | |
612721db | 351 | */ |
69cabd72 | 352 | #if HAVE_DECL__NL_TIME_WEEK_1STDAY |
0a9bead0 PB |
353 | /* |
354 | * You need to use 2 locale variables to get the first day of the week. | |
355 | * This is needed to support first_weekday=2 and first_workday=1 for | |
356 | * the rare case where working days span across 2 weeks. | |
357 | * This shell script shows the combinations and calculations involved: | |
33c17354 SK |
358 | * |
359 | * for LANG in en_US ru_RU fr_FR csb_PL POSIX; do | |
360 | * printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday) | |
361 | * date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w | |
362 | * done | |
363 | * | |
364 | * en_US: 19971130 + 1 -1 = 0 #0 = sunday | |
365 | * ru_RU: 19971130 + 2 -1 = 1 | |
366 | * fr_FR: 19971201 + 1 -1 = 1 | |
367 | * csb_PL: 19971201 + 2 -1 = 2 | |
368 | * POSIX: 19971201 + 7 -1 = 0 | |
0a9bead0 PB |
369 | */ |
370 | { | |
aebb9522 KZ |
371 | int wfd; |
372 | union { unsigned int word; char *string; } val; | |
373 | val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY); | |
374 | ||
375 | wfd = val.word; | |
db9baa8a WP |
376 | wfd = day_in_week(&ctl, wfd % 100, (wfd / 100) % 100, |
377 | wfd / (100 * 100)); | |
b549058b | 378 | ctl.weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % DAYS_IN_WEEK; |
0a9bead0 | 379 | } |
e8f26419 | 380 | #endif |
ccf3dd50 | 381 | while ((ch = getopt_long(argc, argv, "13mjn:sSywYVh", longopts, NULL)) != -1) { |
7800509b MK |
382 | |
383 | err_exclusive_options(ch, longopts, excl, excl_st); | |
d162fcb5 | 384 | |
6dbe3af9 | 385 | switch(ch) { |
d162fcb5 | 386 | case '1': |
2bcf8f79 | 387 | ctl.num_months = 1; |
d162fcb5 KZ |
388 | break; |
389 | case '3': | |
b549058b | 390 | ctl.num_months = 3; |
d4cb626d | 391 | ctl.span_months = 1; |
d162fcb5 | 392 | break; |
ffc43748 | 393 | case 's': |
b549058b | 394 | ctl.weekstart = SUNDAY; /* default */ |
ffc43748 | 395 | break; |
5c36a0eb | 396 | case 'm': |
b549058b | 397 | ctl.weekstart = MONDAY; |
5c36a0eb | 398 | break; |
6dbe3af9 | 399 | case 'j': |
b549058b | 400 | ctl.julian = 1; |
71ff238e | 401 | ctl.day_width = DAY_LEN + 1; |
6dbe3af9 KZ |
402 | break; |
403 | case 'y': | |
7800509b MK |
404 | yflag = 1; |
405 | break; | |
406 | case 'Y': | |
407 | Yflag = 1; | |
408 | break; | |
409 | case 'n': | |
410 | ctl.num_months = strtou32_or_err(optarg, | |
411 | _("invalid month argument")); | |
6dbe3af9 | 412 | break; |
ccf3dd50 D |
413 | case 'S': |
414 | ctl.span_months = 1; | |
415 | break; | |
c36c4a4e | 416 | case 'w': |
aae4f87e | 417 | if (optarg) { |
ffc56357 | 418 | ctl.req.week = strtos32_or_err(optarg, |
aae4f87e | 419 | _("invalid week argument")); |
efafeaf6 SK |
420 | if (ctl.req.week < 1 || 54 < ctl.req.week) |
421 | errx(EXIT_FAILURE,_("illegal week value: use 1-54")); | |
aae4f87e | 422 | } |
b549058b | 423 | ctl.weektype = WEEK_NUM_US; /* default per weekstart */ |
c36c4a4e | 424 | break; |
7b353df2 | 425 | case OPT_COLOR: |
5d51dc2a | 426 | ctl.colormode = UL_COLORMODE_AUTO; |
201b39f0 | 427 | if (optarg) |
b549058b | 428 | ctl.colormode = colormode_or_err(optarg, |
201b39f0 | 429 | _("unsupported color mode")); |
7b353df2 | 430 | break; |
ae51e7b4 WP |
431 | case OPT_REFORM: |
432 | ctl.reform_year = parse_reform_year(optarg); | |
433 | break; | |
434 | case OPT_ISO: | |
435 | ctl.reform_year = ISO; | |
436 | break; | |
eb63b9b8 | 437 | case 'V': |
2c308875 | 438 | print_version(EXIT_SUCCESS); |
022df321 | 439 | case 'h': |
6e1eda6f | 440 | usage(); |
6dbe3af9 | 441 | default: |
677ec86c | 442 | errtryhelp(EXIT_FAILURE); |
6dbe3af9 | 443 | } |
7800509b MK |
444 | } |
445 | ||
6dbe3af9 KZ |
446 | argc -= optind; |
447 | argv += optind; | |
448 | ||
b549058b | 449 | if (ctl.weektype) { |
ffc56357 | 450 | ctl.weektype = ctl.req.week & WEEK_NUM_MASK; |
b549058b | 451 | ctl.weektype |= (ctl.weekstart == MONDAY ? WEEK_NUM_ISO : WEEK_NUM_US); |
71ff238e SK |
452 | ctl.week_width = (ctl.day_width * DAYS_IN_WEEK) + WNUM_LEN; |
453 | } else | |
454 | ctl.week_width = ctl.day_width * DAYS_IN_WEEK; | |
c36c4a4e | 455 | |
cd28d6a4 KZ |
456 | if (argc == 1 && !isdigit_string(*argv)) { |
457 | usec_t x; | |
535fd6d2 | 458 | /* cal <timestamp> */ |
cd28d6a4 KZ |
459 | if (parse_timestamp(*argv, &x) == 0) |
460 | now = (time_t) (x / 1000000); | |
535fd6d2 KZ |
461 | /* cal <monthname> */ |
462 | else if ((ctl.req.month = monthname_to_number(&ctl, *argv)) > 0) | |
b9d9ab7d | 463 | cal_time(&now); /* this year */ |
cd28d6a4 | 464 | else |
535fd6d2 | 465 | errx(EXIT_FAILURE, _("failed to parse timestamp or unknown month name: %s"), *argv); |
cd28d6a4 KZ |
466 | argc = 0; |
467 | } else | |
b9d9ab7d | 468 | cal_time(&now); |
cd28d6a4 | 469 | |
a43145e1 RP |
470 | local_time = localtime(&now); |
471 | ||
6dbe3af9 | 472 | switch(argc) { |
d7a92b89 | 473 | case 3: |
ffc56357 SK |
474 | ctl.req.day = strtos32_or_err(*argv++, _("illegal day value")); |
475 | if (ctl.req.day < 1 || DAYS_IN_MONTH < ctl.req.day) | |
5f845cb7 | 476 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), DAYS_IN_MONTH); |
b1557fe9 | 477 | /* fallthrough */ |
6dbe3af9 | 478 | case 2: |
731441ac KZ |
479 | if (isdigit(**argv)) |
480 | ctl.req.month = strtos32_or_err(*argv++, _("illegal month value: use 1-12")); | |
c49fb9ca KZ |
481 | else { |
482 | ctl.req.month = monthname_to_number(&ctl, *argv); | |
483 | if (ctl.req.month < 0) | |
484 | errx(EXIT_FAILURE, _("unknown month name: %s"), *argv); | |
485 | argv++; | |
486 | } | |
ffc56357 | 487 | if (ctl.req.month < 1 || MONTHS_IN_YEAR < ctl.req.month) |
022df321 | 488 | errx(EXIT_FAILURE, _("illegal month value: use 1-12")); |
b1557fe9 | 489 | /* fallthrough */ |
6dbe3af9 | 490 | case 1: |
4a7424a5 | 491 | ctl.req.year = strtos32_or_err(*argv++, _("illegal year value")); |
ffc56357 | 492 | if (ctl.req.year < SMALLEST_YEAR) |
e44fe471 | 493 | errx(EXIT_FAILURE, _("illegal year value: use positive integer")); |
ae51e7b4 | 494 | if (ctl.req.year == JULIAN) |
4a7424a5 | 495 | errx(EXIT_FAILURE, _("illegal year value")); |
ffc56357 | 496 | if (ctl.req.day) { |
db9baa8a WP |
497 | int dm = days_in_month[leap_year(&ctl, ctl.req.year)] |
498 | [ctl.req.month]; | |
ffc56357 | 499 | if (ctl.req.day > dm) |
022df321 | 500 | errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm); |
db9baa8a WP |
501 | ctl.req.day = day_in_year(&ctl, ctl.req.day, |
502 | ctl.req.month, ctl.req.year); | |
4a7424a5 | 503 | } else if ((int32_t) (local_time->tm_year + 1900) == ctl.req.year) { |
ffc56357 | 504 | ctl.req.day = local_time->tm_yday + 1; |
d7a92b89 | 505 | } |
95f4adde SK |
506 | if (!ctl.req.month && !ctl.req.week) { |
507 | ctl.req.month = local_time->tm_mon + 1; | |
37bd991f KZ |
508 | if (!ctl.num_months) |
509 | yflag = 1; | |
95f4adde | 510 | } |
6dbe3af9 KZ |
511 | break; |
512 | case 0: | |
ffc56357 SK |
513 | ctl.req.day = local_time->tm_yday + 1; |
514 | ctl.req.year = local_time->tm_year + 1900; | |
535fd6d2 KZ |
515 | if (!ctl.req.month) |
516 | ctl.req.month = local_time->tm_mon + 1; | |
6dbe3af9 KZ |
517 | break; |
518 | default: | |
6e1eda6f RM |
519 | warnx(_("bad usage")); |
520 | errtryhelp(EXIT_FAILURE); | |
6dbe3af9 | 521 | } |
aae4f87e | 522 | |
ffc56357 SK |
523 | if (0 < ctl.req.week) { |
524 | int yday = week_to_day(&ctl); | |
db9baa8a | 525 | int leap = leap_year(&ctl, ctl.req.year); |
ffc56357 | 526 | int m = 1; |
c1732e62 | 527 | |
aae4f87e | 528 | if (yday < 1) |
4a7424a5 | 529 | errx(EXIT_FAILURE, _("illegal week value: year %d " |
c1732e62 | 530 | "doesn't have week %d"), |
ffc56357 | 531 | ctl.req.year, ctl.req.week); |
e1abe57e | 532 | while (m <= DECEMBER && yday > days_in_month[leap][m]) |
ffc56357 | 533 | yday -= days_in_month[leap][m++]; |
03f8bc1f | 534 | if (DECEMBER < m && ctl.weektype & WEEK_NUM_ISO) { |
c1732e62 KZ |
535 | /* In some years (e.g. 2010 in ISO mode) it's possible |
536 | * to have a remnant of week 53 starting the year yet | |
537 | * the year in question ends during 52, in this case | |
538 | * we're assuming that early remnant is being referred | |
539 | * to if 53 is given as argument. */ | |
e1abe57e | 540 | if (ctl.req.week != week_number(31, DECEMBER, ctl.req.year - 1, &ctl)) |
c1732e62 | 541 | errx(EXIT_FAILURE, |
4a7424a5 | 542 | _("illegal week value: year %d " |
c1732e62 | 543 | "doesn't have week %d"), |
ffc56357 | 544 | ctl.req.year, ctl.req.week); |
aae4f87e | 545 | } |
ffc56357 | 546 | if (!ctl.req.month) |
7800509b | 547 | ctl.req.month = MONTHS_IN_YEAR < m ? 1 : m; |
aae4f87e TK |
548 | } |
549 | ||
b549058b | 550 | headers_init(&ctl); |
6dbe3af9 | 551 | |
f90d8b8b KZ |
552 | if (colors_init(ctl.colormode, "cal") == 0) { |
553 | /* | |
554 | * If standout mode available (Senter and Sexit are set) and | |
555 | * user or terminal-colors.d do not disable colors than | |
556 | * ignore colors_init(). | |
557 | */ | |
558 | if (*Senter && *Sexit && colors_mode() != UL_COLORMODE_NEVER) { | |
559 | /* let use standout mode */ | |
560 | ; | |
561 | } else { | |
562 | /* disable */ | |
d135e1a1 | 563 | Senter = ""; Sexit = ""; |
f90d8b8b KZ |
564 | ctl.req.day = 0; |
565 | ctl.weektype &= ~WEEK_NUM_MASK; | |
566 | } | |
aae4f87e | 567 | } |
d7a92b89 | 568 | |
7800509b | 569 | if (yflag || Yflag) { |
95f4adde | 570 | ctl.gutter_width = 3; |
2bcf8f79 WP |
571 | if (!ctl.num_months) |
572 | ctl.num_months = MONTHS_IN_YEAR; | |
7800509b MK |
573 | if (yflag) { |
574 | ctl.req.start_month = 1; /* start from Jan */ | |
575 | ctl.header_year = 1; /* print year number */ | |
576 | } | |
577 | } | |
578 | ||
8315a2ff KZ |
579 | if (ctl.num_months > 1 && ctl.months_in_row == 0) { |
580 | ctl.months_in_row = MONTHS_IN_YEAR_ROW; /* default */ | |
581 | ||
582 | if (isatty(STDOUT_FILENO)) { | |
f06d8b69 KZ |
583 | int w, mw, extra, new_n; |
584 | ||
585 | w = get_terminal_width(80); | |
586 | mw = ctl.julian ? DOY_MONTH_WIDTH : DOM_MONTH_WIDTH; | |
587 | ||
588 | if (w < mw) | |
589 | w = mw; | |
590 | ||
591 | extra = ((w / mw) - 1) * ctl.gutter_width; | |
592 | new_n = (w - extra) / mw; | |
8315a2ff KZ |
593 | |
594 | if (new_n < MONTHS_IN_YEAR_ROW) | |
f06d8b69 | 595 | ctl.months_in_row = new_n > 0 ? new_n : 1; |
8315a2ff KZ |
596 | } |
597 | } else if (!ctl.months_in_row) | |
7800509b MK |
598 | ctl.months_in_row = 1; |
599 | ||
2bcf8f79 WP |
600 | if (!ctl.num_months) |
601 | ctl.num_months = 1; /* display at least one month */ | |
602 | ||
7800509b | 603 | if (yflag || Yflag) |
ffc56357 | 604 | yearly(&ctl); |
7800509b | 605 | else |
ffc56357 | 606 | monthly(&ctl); |
37d6897f KZ |
607 | |
608 | return EXIT_SUCCESS; | |
6dbe3af9 KZ |
609 | } |
610 | ||
b9c65010 | 611 | /* leap year -- account for gregorian reformation in 1752 */ |
db9baa8a | 612 | static int leap_year(const struct cal_control *ctl, int32_t year) |
3b66dfd6 | 613 | { |
db9baa8a | 614 | if (year <= ctl->reform_year) |
b9c65010 KZ |
615 | return !(year % 4); |
616 | else | |
617 | return ( !(year % 4) && (year % 100) ) || !(year % 400); | |
3b66dfd6 SK |
618 | } |
619 | ||
731441ac KZ |
620 | static void init_monthnames(struct cal_control *ctl) |
621 | { | |
622 | size_t i; | |
623 | ||
87918040 | 624 | if (ctl->full_month[0] != NULL) |
731441ac KZ |
625 | return; /* already initialized */ |
626 | ||
627 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
4e12a62e | 628 | ctl->full_month[i] = nl_langinfo(ALTMON_1 + i); |
731441ac KZ |
629 | } |
630 | ||
c8805632 KZ |
631 | static void init_abbr_monthnames(struct cal_control *ctl) |
632 | { | |
633 | size_t i; | |
634 | ||
87918040 | 635 | if (ctl->abbr_month[0] != NULL) |
c8805632 KZ |
636 | return; /* already initialized */ |
637 | ||
638 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
4e12a62e | 639 | ctl->abbr_month[i] = nl_langinfo(_NL_ABALTMON_1 + i); |
c8805632 KZ |
640 | } |
641 | ||
731441ac KZ |
642 | static int monthname_to_number(struct cal_control *ctl, const char *name) |
643 | { | |
644 | size_t i; | |
645 | ||
646 | init_monthnames(ctl); | |
731441ac KZ |
647 | for (i = 0; i < MONTHS_IN_YEAR; i++) |
648 | if (strcasecmp(ctl->full_month[i], name) == 0) | |
649 | return i + 1; | |
650 | ||
c8805632 KZ |
651 | init_abbr_monthnames(ctl); |
652 | for (i = 0; i < MONTHS_IN_YEAR; i++) | |
653 | if (strcasecmp(ctl->abbr_month[i], name) == 0) | |
654 | return i + 1; | |
655 | ||
c49fb9ca | 656 | return -EINVAL; |
731441ac KZ |
657 | } |
658 | ||
b549058b | 659 | static void headers_init(struct cal_control *ctl) |
6dbe3af9 | 660 | { |
71ff238e | 661 | size_t i, wd; |
b283141c | 662 | char *cur_dh = day_headings; |
efce94ec | 663 | char tmp[FMT_ST_CHARS]; |
06fa5817 | 664 | int year_len; |
efce94ec | 665 | |
e671a62e | 666 | year_len = snprintf(tmp, sizeof(tmp), "%04d", ctl->req.year); |
33c17354 | 667 | |
06fa5817 YK |
668 | if (year_len < 0 || (size_t)year_len >= sizeof(tmp)) { |
669 | /* XXX impossible error */ | |
670 | return; | |
671 | } | |
672 | ||
5f845cb7 | 673 | for (i = 0; i < DAYS_IN_WEEK; i++) { |
add1924d | 674 | size_t space_left; |
b549058b | 675 | wd = (i + ctl->weekstart) % DAYS_IN_WEEK; |
33c17354 SK |
676 | |
677 | if (i) | |
678 | strcat(cur_dh++, " "); | |
add1924d KZ |
679 | space_left = sizeof(day_headings) - (cur_dh - day_headings); |
680 | ||
71ff238e | 681 | if (space_left <= (ctl->day_width - 1)) |
33c17354 | 682 | break; |
add1924d | 683 | cur_dh += center_str(nl_langinfo(ABDAY_1 + wd), cur_dh, |
71ff238e | 684 | space_left, ctl->day_width - 1); |
33c17354 SK |
685 | } |
686 | ||
731441ac KZ |
687 | init_monthnames(ctl); |
688 | ||
efce94ec | 689 | for (i = 0; i < MONTHS_IN_YEAR; i++) { |
efce94ec SK |
690 | /* The +1 after year_len is space in between month and year. */ |
691 | if (ctl->week_width < strlen(ctl->full_month[i]) + year_len + 1) | |
692 | ctl->header_hint = 1; | |
693 | } | |
6dbe3af9 KZ |
694 | } |
695 | ||
852c8d21 | 696 | static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl) |
d4be073d | 697 | { |
db9baa8a | 698 | int first_week_day = day_in_week(ctl, 1, month->month, month->year); |
852c8d21 SK |
699 | int month_days; |
700 | int i, j, weeklines = 0; | |
701 | ||
702 | if (ctl->julian) | |
db9baa8a | 703 | j = day_in_year(ctl, 1, month->month, month->year); |
852c8d21 SK |
704 | else |
705 | j = 1; | |
db9baa8a | 706 | month_days = j + days_in_month[leap_year(ctl, month->year)][month->month]; |
852c8d21 SK |
707 | |
708 | /* True when Sunday is not first day in the output week. */ | |
709 | if (ctl->weekstart) { | |
710 | first_week_day -= ctl->weekstart; | |
711 | if (first_week_day < 0) | |
712 | first_week_day = DAYS_IN_WEEK - ctl->weekstart; | |
713 | month_days += ctl->weekstart - 1; | |
714 | } | |
715 | ||
716 | /* Fill day array. */ | |
717 | for (i = 0; i < MAXDAYS; i++) { | |
718 | if (0 < first_week_day) { | |
719 | month->days[i] = SPACE; | |
720 | first_week_day--; | |
721 | continue; | |
722 | } | |
723 | if (j < month_days) { | |
db9baa8a WP |
724 | if (month->year == ctl->reform_year && |
725 | month->month == REFORMATION_MONTH && | |
726 | (j == 3 || j == 247)) | |
852c8d21 SK |
727 | j += NUMBER_MISSING_DAYS; |
728 | month->days[i] = j; | |
729 | j++; | |
730 | continue; | |
731 | } | |
732 | month->days[i] = SPACE; | |
733 | weeklines++; | |
734 | } | |
66ee8158 | 735 | |
852c8d21 SK |
736 | /* Add week numbers */ |
737 | if (ctl->weektype) { | |
738 | int weeknum = week_number(1, month->month, month->year, ctl); | |
739 | weeklines = MAXDAYS / DAYS_IN_WEEK - weeklines / DAYS_IN_WEEK; | |
740 | for (i = 0; i < MAXDAYS / DAYS_IN_WEEK; i++) { | |
efafeaf6 SK |
741 | if (0 < weeklines) { |
742 | if (52 < weeknum) | |
743 | weeknum = week_number(month->days[i * DAYS_IN_WEEK], month->month, month->year, ctl); | |
852c8d21 | 744 | month->weeks[i] = weeknum++; |
efafeaf6 | 745 | } else |
852c8d21 SK |
746 | month->weeks[i] = SPACE; |
747 | weeklines--; | |
852c8d21 | 748 | } |
66ee8158 KZ |
749 | } |
750 | } | |
751 | ||
852c8d21 SK |
752 | static void cal_output_header(struct cal_month *month, const struct cal_control *ctl) |
753 | { | |
754 | char out[FMT_ST_CHARS]; | |
755 | struct cal_month *i; | |
756 | ||
7800509b | 757 | if (ctl->header_hint || ctl->header_year) { |
852c8d21 | 758 | for (i = month; i; i = i->next) { |
100a1406 | 759 | snprintf(out, sizeof(out), "%s", ctl->full_month[i->month - 1]); |
95f4adde | 760 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
852c8d21 | 761 | } |
7800509b | 762 | if (!ctl->header_year) { |
07ac4aa9 | 763 | my_putstring("\n"); |
95f4adde | 764 | for (i = month; i; i = i->next) { |
100a1406 | 765 | snprintf(out, sizeof(out), "%04d", i->year); |
95f4adde SK |
766 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
767 | } | |
852c8d21 SK |
768 | } |
769 | } else { | |
770 | for (i = month; i; i = i->next) { | |
100a1406 | 771 | snprintf(out, sizeof(out), "%s %04d", ctl->full_month[i->month - 1], i->year); |
95f4adde | 772 | center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width); |
852c8d21 SK |
773 | } |
774 | } | |
07ac4aa9 | 775 | my_putstring("\n"); |
852c8d21 SK |
776 | for (i = month; i; i = i->next) { |
777 | if (ctl->weektype) { | |
778 | if (ctl->julian) | |
100a1406 | 779 | snprintf(out, sizeof(out), "%*s%s", (int)ctl->day_width - 1, "", day_headings); |
852c8d21 | 780 | else |
100a1406 | 781 | snprintf(out, sizeof(out), "%*s%s", (int)ctl->day_width, "", day_headings); |
07ac4aa9 | 782 | my_putstring(out); |
852c8d21 | 783 | } else |
07ac4aa9 RM |
784 | my_putstring(day_headings); |
785 | if (i->next != NULL) { | |
100a1406 | 786 | snprintf(out, sizeof(out), "%*s", ctl->gutter_width, ""); |
07ac4aa9 RM |
787 | my_putstring(out); |
788 | } | |
852c8d21 | 789 | } |
07ac4aa9 | 790 | my_putstring("\n"); |
852c8d21 SK |
791 | } |
792 | ||
793 | static void cal_output_months(struct cal_month *month, const struct cal_control *ctl) | |
794 | { | |
07ac4aa9 | 795 | char out[FMT_ST_CHARS]; |
852c8d21 SK |
796 | int reqday, week_line, d; |
797 | int skip; | |
798 | struct cal_month *i; | |
799 | ||
800 | for (week_line = 0; week_line < MAXDAYS / DAYS_IN_WEEK; week_line++) { | |
801 | for (i = month; i; i = i->next) { | |
802 | /* Determine the day that should be highlighted. */ | |
803 | reqday = 0; | |
804 | if (i->month == ctl->req.month && i->year == ctl->req.year) { | |
805 | if (ctl->julian) | |
806 | reqday = ctl->req.day; | |
807 | else | |
db9baa8a WP |
808 | reqday = ctl->req.day + 1 - |
809 | day_in_year(ctl, 1, i->month, | |
810 | i->year); | |
852c8d21 SK |
811 | } |
812 | ||
813 | if (ctl->weektype) { | |
814 | if (0 < i->weeks[week_line]) { | |
815 | if ((ctl->weektype & WEEK_NUM_MASK) == | |
816 | i->weeks[week_line]) | |
100a1406 KZ |
817 | snprintf(out, sizeof(out), "%s%2d%s", |
818 | Senter, i->weeks[week_line], | |
819 | Sexit); | |
852c8d21 | 820 | else |
100a1406 | 821 | snprintf(out, sizeof(out), "%2d", i->weeks[week_line]); |
852c8d21 | 822 | } else |
100a1406 | 823 | snprintf(out, sizeof(out), "%2s", ""); |
07ac4aa9 | 824 | my_putstring(out); |
852c8d21 SK |
825 | skip = ctl->day_width; |
826 | } else | |
827 | /* First day of the week is one char narrower than the other days, | |
828 | * unless week number is printed. */ | |
829 | skip = ctl->day_width - 1; | |
830 | ||
831 | for (d = DAYS_IN_WEEK * week_line; | |
832 | d < DAYS_IN_WEEK * week_line + DAYS_IN_WEEK; d++) { | |
833 | if (0 < i->days[d]) { | |
834 | if (reqday == i->days[d]) | |
100a1406 KZ |
835 | snprintf(out, sizeof(out), "%*s%s%*d%s", |
836 | skip - (ctl->julian ? 3 : 2), | |
852c8d21 SK |
837 | "", Senter, (ctl->julian ? 3 : 2), |
838 | i->days[d], Sexit); | |
839 | else | |
100a1406 | 840 | snprintf(out, sizeof(out), "%*d", skip, i->days[d]); |
852c8d21 | 841 | } else |
100a1406 | 842 | snprintf(out, sizeof(out), "%*s", skip, ""); |
07ac4aa9 | 843 | my_putstring(out); |
852c8d21 SK |
844 | if (skip < (int)ctl->day_width) |
845 | skip++; | |
846 | } | |
07ac4aa9 | 847 | if (i->next != NULL) { |
100a1406 | 848 | snprintf(out, sizeof(out), "%*s", ctl->gutter_width, ""); |
07ac4aa9 RM |
849 | my_putstring(out); |
850 | } | |
851 | } | |
8315a2ff KZ |
852 | if (i == NULL) |
853 | my_putstring("\n"); | |
852c8d21 SK |
854 | } |
855 | } | |
856 | ||
857 | static void monthly(const struct cal_control *ctl) | |
858 | { | |
7800509b | 859 | struct cal_month m1,m2,m3, *m; |
2395f93c | 860 | int i, rows, month = ctl->req.start_month ? ctl->req.start_month : ctl->req.month; |
7800509b MK |
861 | int32_t year = ctl->req.year; |
862 | ||
ccf3dd50 D |
863 | /* cal -3, cal -Y --span, etc. */ |
864 | if (ctl->span_months) { | |
2395f93c | 865 | int new_month = month - ctl->num_months / 2; |
ccf3dd50 | 866 | if (new_month < 1) { |
2395f93c KZ |
867 | new_month *= -1; |
868 | year -= (new_month / MONTHS_IN_YEAR) + 1; | |
869 | ||
870 | if (new_month > MONTHS_IN_YEAR) | |
871 | new_month %= MONTHS_IN_YEAR; | |
872 | month = MONTHS_IN_YEAR - new_month; | |
873 | } else | |
ccf3dd50 | 874 | month = new_month; |
7800509b | 875 | } |
f60117b5 | 876 | |
7800509b MK |
877 | m1.next = (ctl->months_in_row > 1) ? &m2 : NULL; |
878 | m2.next = (ctl->months_in_row > 2) ? &m3 : NULL; | |
f60117b5 SK |
879 | m3.next = NULL; |
880 | ||
7800509b MK |
881 | rows = (ctl->num_months - 1) / ctl->months_in_row; |
882 | for (i = 0; i < rows + 1 ; i++){ | |
883 | if (i == rows){ | |
884 | switch (ctl->num_months % ctl->months_in_row){ | |
885 | case 1: | |
886 | m1.next = NULL; | |
887 | /* fallthrough */ | |
888 | case 2: | |
889 | m2.next = NULL; | |
890 | /* fallthrough */ | |
891 | } | |
892 | } | |
893 | for (m = &m1; m; m = m->next){ | |
894 | m->month = month++; | |
895 | m->year = year; | |
896 | if (MONTHS_IN_YEAR < month) { | |
897 | year++; | |
898 | month = 1; | |
899 | } | |
900 | cal_fill_month(m, ctl); | |
901 | } | |
902 | cal_output_header(&m1, ctl); | |
903 | cal_output_months(&m1, ctl); | |
e66ba1bf | 904 | } |
6dbe3af9 KZ |
905 | } |
906 | ||
ffc56357 | 907 | static void yearly(const struct cal_control *ctl) |
d4be073d | 908 | { |
95f4adde SK |
909 | char out[FMT_ST_CHARS]; |
910 | int year_width = 0; | |
add1924d | 911 | |
7800509b | 912 | year_width += (ctl->week_width + 1) * (ctl->julian ? 2 : 3); |
95f4adde SK |
913 | if (ctl->julian) |
914 | year_width--; | |
7800509b MK |
915 | |
916 | if (ctl->header_year) { | |
100a1406 | 917 | snprintf(out, sizeof(out), "%04d", ctl->req.year); |
7800509b MK |
918 | center(out, year_width, 0); |
919 | my_putstring("\n\n"); | |
d162fcb5 | 920 | } |
7800509b | 921 | monthly(ctl); |
6dbe3af9 KZ |
922 | } |
923 | ||
924 | /* | |
925 | * day_in_year -- | |
926 | * return the 1 based day number within the year | |
927 | */ | |
db9baa8a WP |
928 | static int day_in_year(const struct cal_control *ctl, |
929 | int day, int month, int32_t year) | |
d4be073d | 930 | { |
6dbe3af9 KZ |
931 | int i, leap; |
932 | ||
db9baa8a | 933 | leap = leap_year(ctl, year); |
6dbe3af9 KZ |
934 | for (i = 1; i < month; i++) |
935 | day += days_in_month[leap][i]; | |
d162fcb5 | 936 | return day; |
6dbe3af9 KZ |
937 | } |
938 | ||
939 | /* | |
940 | * day_in_week | |
941 | * return the 0 based day number for any date from 1 Jan. 1 to | |
942 | * 31 Dec. 9999. Assumes the Gregorian reformation eliminates | |
d68f076f SK |
943 | * 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday |
944 | * during the period of 11 days. | |
6dbe3af9 | 945 | */ |
db9baa8a WP |
946 | static int day_in_week(const struct cal_control *ctl, int day, |
947 | int month, int32_t year) | |
91ac9ef5 | 948 | { |
6ce7eca3 KZ |
949 | /* |
950 | * The magic constants in the reform[] array are, in a simplified | |
951 | * sense, the remaining days after slicing into one week periods the total | |
952 | * days from the beginning of the year to the target month. That is, | |
953 | * weeks + reform[] days gets us to the target month. The exception is, | |
954 | * that for the months past February 'DOY - 1' must be used. | |
955 | * | |
956 | * DoY (Day of Year): total days to the target month | |
957 | * | |
958 | * Month 1 2 3 4 5 6 7 8 9 10 11 12 | |
959 | * DoY 0 31 59 90 120 151 181 212 243 273 304 334 | |
960 | * DoY % 7 0 3 | |
961 | * DoY - 1 % 7 - -- 2 5 0 3 5 1 4 6 2 4 | |
962 | * reform[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 }; | |
963 | * | |
964 | * Note: these calculations are for non leap years. | |
965 | */ | |
3c49b23a KZ |
966 | static const int reform[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 }; |
967 | static const int old[] = { 5, 1, 0, 3, 5, 1, 3, 6, 2, 4, 0, 2 }; | |
968 | ||
db9baa8a | 969 | if (year != ctl->reform_year + 1) |
e1abe57e | 970 | year -= month < MARCH; |
91ac9ef5 | 971 | else |
e1abe57e | 972 | year -= (month < MARCH) + 14; |
db9baa8a WP |
973 | if (ctl->reform_year < year |
974 | || (year == ctl->reform_year && REFORMATION_MONTH < month) | |
975 | || (year == ctl->reform_year | |
976 | && month == REFORMATION_MONTH && 13 < day)) { | |
1dca3edc WP |
977 | return ((int64_t) year + (year / 4) |
978 | - (year / 100) + (year / 400) | |
979 | + reform[month - 1] + day) % DAYS_IN_WEEK; | |
26f3a386 | 980 | } |
db9baa8a WP |
981 | if (year < ctl->reform_year |
982 | || (year == ctl->reform_year && month < REFORMATION_MONTH) | |
983 | || (year == ctl->reform_year && month == REFORMATION_MONTH && day < 3)) | |
1dca3edc WP |
984 | return ((int64_t) year + year / 4 + old[month - 1] + day) |
985 | % DAYS_IN_WEEK; | |
91ac9ef5 | 986 | return NONEDAY; |
6dbe3af9 KZ |
987 | } |
988 | ||
c36c4a4e TK |
989 | /* |
990 | * week_number | |
efafeaf6 | 991 | * return the week number of a given date, 1..54. |
c36c4a4e TK |
992 | * Supports ISO-8601 and North American modes. |
993 | * Day may be given as Julian day of the year mode, in which | |
994 | * case the month is disregarded entirely. | |
995 | */ | |
4a7424a5 | 996 | static int week_number(int day, int month, int32_t year, const struct cal_control *ctl) |
c1732e62 KZ |
997 | { |
998 | int fday = 0, yday; | |
db9baa8a | 999 | const int wday = day_in_week(ctl, 1, JANUARY, year); |
c1732e62 | 1000 | |
b549058b | 1001 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 | 1002 | fday = wday + (wday >= FRIDAY ? -2 : 5); |
efafeaf6 SK |
1003 | else { |
1004 | /* WEEK_NUM_US: Jan 1 is always First week, that may | |
1005 | * begin previous year. That means there is very seldom | |
1006 | * more than 52 weeks, */ | |
1007 | fday = wday + 6; | |
1008 | } | |
c1732e62 KZ |
1009 | /* For julian dates the month can be set to 1, the global julian |
1010 | * variable cannot be relied upon here, because we may recurse | |
1011 | * internally for 31.12. which would not work. */ | |
e1abe57e SK |
1012 | if (day > DAYS_IN_MONTH) |
1013 | month = JANUARY; | |
c1732e62 | 1014 | |
db9baa8a WP |
1015 | yday = day_in_year(ctl, day, month, year); |
1016 | if (year == ctl->reform_year && yday >= YDAY_AFTER_MISSING) | |
74ce680a | 1017 | fday -= NUMBER_MISSING_DAYS; |
c1732e62 KZ |
1018 | |
1019 | /* Last year is last year */ | |
e1abe57e SK |
1020 | if (yday + fday < DAYS_IN_WEEK) |
1021 | return week_number(31, DECEMBER, year - 1, ctl); | |
c1732e62 KZ |
1022 | |
1023 | /* Or it could be part of the next year. The reformation year had less | |
1024 | * days than 365 making this check invalid, but reformation year ended | |
1025 | * on Sunday and in week 51, so it's ok here. */ | |
b549058b | 1026 | if (ctl->weektype == WEEK_NUM_ISO && yday >= 363 |
db9baa8a WP |
1027 | && day_in_week(ctl, day, month, year) >= MONDAY |
1028 | && day_in_week(ctl, day, month, year) <= WEDNESDAY | |
1029 | && day_in_week(ctl, 31, DECEMBER, year) >= MONDAY | |
1030 | && day_in_week(ctl, 31, DECEMBER, year) <= WEDNESDAY) | |
e1abe57e | 1031 | return week_number(1, JANUARY, year + 1, ctl); |
c1732e62 | 1032 | |
e1abe57e | 1033 | return (yday + fday) / DAYS_IN_WEEK; |
c36c4a4e TK |
1034 | } |
1035 | ||
aae4f87e TK |
1036 | /* |
1037 | * week_to_day | |
1038 | * return the yday of the first day in a given week inside | |
1039 | * the given year. This may be something other than Monday | |
1040 | * for ISO-8601 modes. For North American numbering this | |
1041 | * always returns a Sunday. | |
1042 | */ | |
ffc56357 | 1043 | static int week_to_day(const struct cal_control *ctl) |
c1732e62 | 1044 | { |
aae4f87e | 1045 | int yday, wday; |
c1732e62 | 1046 | |
db9baa8a | 1047 | wday = day_in_week(ctl, 1, JANUARY, ctl->req.year); |
e1abe57e | 1048 | yday = ctl->req.week * DAYS_IN_WEEK - wday; |
c1732e62 | 1049 | |
e572a765 WP |
1050 | if (ctl->req.year == ctl->reform_year && yday >= YDAY_AFTER_MISSING) |
1051 | yday += NUMBER_MISSING_DAYS; | |
1052 | ||
b549058b | 1053 | if (ctl->weektype & WEEK_NUM_ISO) |
c1732e62 KZ |
1054 | yday -= (wday >= FRIDAY ? -2 : 5); |
1055 | else | |
6304358c | 1056 | yday -= 6; /* WEEK_NUM_US */ |
c1732e62 | 1057 | if (yday <= 0) |
aae4f87e TK |
1058 | return 1; |
1059 | ||
1060 | return yday; | |
1061 | } | |
1062 | ||
d162fcb5 KZ |
1063 | /* |
1064 | * Center string, handling multibyte characters appropriately. | |
1065 | * In addition if the string is too large for the width it's truncated. | |
ff87defc | 1066 | * The number of trailing spaces may be 1 less than the number of leading spaces. |
d162fcb5 | 1067 | */ |
d4be073d KZ |
1068 | static int center_str(const char* src, char* dest, |
1069 | size_t dest_size, size_t width) | |
d162fcb5 | 1070 | { |
104b92f8 PB |
1071 | return mbsalign(src, dest, dest_size, &width, |
1072 | MBS_ALIGN_CENTER, MBA_UNIBYTE_FALLBACK); | |
d162fcb5 KZ |
1073 | } |
1074 | ||
d4be073d | 1075 | static void center(const char *str, size_t len, int separate) |
6dbe3af9 | 1076 | { |
d162fcb5 | 1077 | char lineout[FMT_ST_CHARS]; |
e66ba1bf | 1078 | |
17282538 | 1079 | center_str(str, lineout, ARRAY_SIZE(lineout), len); |
e66ba1bf KZ |
1080 | my_putstring(lineout); |
1081 | ||
1082 | if (separate) { | |
1083 | snprintf(lineout, sizeof(lineout), "%*s", separate, ""); | |
1084 | my_putstring(lineout); | |
1085 | } | |
6dbe3af9 KZ |
1086 | } |
1087 | ||
ae51e7b4 WP |
1088 | static int parse_reform_year(const char *reform_year) |
1089 | { | |
1090 | size_t i; | |
1091 | ||
1092 | struct reform { | |
1093 | char *name; | |
1094 | int val; | |
1095 | }; | |
1096 | ||
1097 | struct reform years[] = { | |
1098 | {"gregorian", GREGORIAN}, | |
1099 | {"iso", ISO}, | |
1100 | {"1752", GB1752}, | |
1101 | {"julian", JULIAN}, | |
1102 | }; | |
1103 | ||
1104 | for (i = 0; i < ARRAY_SIZE(years); i++) { | |
1105 | if (strcasecmp(reform_year, years[i].name) == 0) { | |
1106 | return years[i].val; | |
1107 | } | |
1108 | } | |
1109 | errx(EXIT_FAILURE, "invalid --reform value: '%s'", reform_year); | |
1110 | } | |
1111 | ||
6e1eda6f | 1112 | static void __attribute__((__noreturn__)) usage(void) |
6dbe3af9 | 1113 | { |
6e1eda6f | 1114 | FILE *out = stdout; |
201d43fd SK |
1115 | fputs(USAGE_HEADER, out); |
1116 | fprintf(out, _(" %s [options] [[[day] month] year]\n"), program_invocation_short_name); | |
535fd6d2 | 1117 | fprintf(out, _(" %s [options] <timestamp|monthname>\n"), program_invocation_short_name); |
d4be073d | 1118 | |
233ad1fa PB |
1119 | fputs(USAGE_SEPARATOR, out); |
1120 | fputs(_("Display a calendar, or some part of it.\n"), out); | |
1121 | fputs(_("Without any arguments, display the current month.\n"), out); | |
1122 | ||
201d43fd | 1123 | fputs(USAGE_OPTIONS, out); |
233ad1fa PB |
1124 | fputs(_(" -1, --one show only a single month (default)\n"), out); |
1125 | fputs(_(" -3, --three show three months spanning the date\n"), out); | |
7800509b | 1126 | fputs(_(" -n, --months <num> show num months starting with date's month\n"), out); |
ccf3dd50 | 1127 | fputs(_(" -S, --span span the date when displaying multiple months\n"), out); |
201d43fd SK |
1128 | fputs(_(" -s, --sunday Sunday as first day of week\n"), out); |
1129 | fputs(_(" -m, --monday Monday as first day of week\n"), out); | |
ae51e7b4 WP |
1130 | fputs(_(" -j, --julian use day-of-year for all calendars\n"), out); |
1131 | fputs(_(" --reform <val> Gregorian reform date (1752|gregorian|iso|julian)\n"), out); | |
1132 | fputs(_(" --iso alias for --reform=iso\n"), out); | |
233ad1fa | 1133 | fputs(_(" -y, --year show the whole year\n"), out); |
7800509b | 1134 | fputs(_(" -Y, --twelve show the next twelve months\n"), out); |
af7c483e | 1135 | fputs(_(" -w, --week[=<num>] show US or ISO-8601 week numbers\n"), out); |
a7466bdc SK |
1136 | fprintf(out, |
1137 | _(" --color[=<when>] colorize messages (%s, %s or %s)\n"), "auto", "always", "never"); | |
5d51dc2a KZ |
1138 | fprintf(out, |
1139 | " %s\n", USAGE_COLORS_DEFAULT); | |
d4be073d | 1140 | |
201d43fd | 1141 | fputs(USAGE_SEPARATOR, out); |
f45f3ec3 RM |
1142 | printf(USAGE_HELP_OPTIONS(23)); |
1143 | printf(USAGE_MAN_TAIL("cal(1)")); | |
d4be073d | 1144 | |
6e1eda6f | 1145 | exit(EXIT_SUCCESS); |
6dbe3af9 | 1146 | } |