942 lines
27 KiB
C
942 lines
27 KiB
C
/*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kim Letkeman.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* 1999-02-01 Jean-Francois Bignolles: added option '-m' to display
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* monday as the first day of the week.
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* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
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* - added Native Language Support
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*
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* 2000-09-01 Michael Charles Pruznick <dummy@netwiz.net>
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* Added "-3" option to print prev/next month with current.
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* Added over-ridable default NUM_MONTHS and "-1" option to
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* get traditional output when -3 is the default. I hope that
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* enough people will like -3 as the default that one day the
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* product can be shipped that way.
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*
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* 2001-05-07 Pablo Saratxaga <pablo@mandrakesoft.com>
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* Fixed the bugs with multi-byte charset (zg: cjk, utf-8)
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* displaying. made the 'month year' ("%s %d") header translatable
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* so it can be adapted to conventions used by different languages
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* added support to read "first_weekday" locale information
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* still to do: support for 'cal_direction' (will require a major
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* rewrite of the displaying) and proper handling of RTL scripts
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*/
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#include <sys/types.h>
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#include <ctype.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <errno.h>
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#include "c.h"
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#include "closestream.h"
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#include "colors.h"
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#include "nls.h"
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#include "mbsalign.h"
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#include "strutils.h"
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#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW)
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# ifdef HAVE_NCURSES_H
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# include <ncurses.h>
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# elif defined(HAVE_NCURSES_NCURSES_H)
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# include <ncurses/ncurses.h>
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# endif
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# include <term.h>
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static void my_setupterm(const char *term, int fildes, int *errret)
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{
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setupterm((char *)term, fildes, errret);
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}
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static void my_putstring(char *s)
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{
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putp(s);
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}
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static const char *my_tgetstr(char *s __attribute__((__unused__)), char *ss)
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{
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const char *ret = tigetstr(ss);
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if (!ret || ret == (char *)-1)
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return "";
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return ret;
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}
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#elif defined(HAVE_LIBTERMCAP)
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# include <termcap.h>
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static char termbuffer[4096];
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static char tcbuffer[4096];
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static char *strbuf = termbuffer;
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static void my_setupterm(const char *term, int fildes __attribute__((__unused__)), int *errret)
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{
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*errret = tgetent(tcbuffer, term);
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}
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static void my_putstring(char *s)
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{
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tputs(s, 1, putchar);
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}
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static const char *my_tgetstr(char *s, char *ss __attribute__((__unused__)))
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{
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const char *ret = tgetstr(s, &strbuf);
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if (!ret)
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return "";
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return ret;
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}
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#else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */
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static void my_putstring(char *s)
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{
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fputs(s, stdout);
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}
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#endif /* end of LIBTERMCAP / NCURSES */
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#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
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static const char *term="";
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static int Slen; /* strlen of Senter+Sexit */
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#endif
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static const char *Senter="", *Sexit="";/* enter and exit standout mode */
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#include "widechar.h"
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/* allow compile-time define to over-ride default */
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#ifndef NUM_MONTHS
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# define NUM_MONTHS 1
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#endif
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#if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 )
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# error NUM_MONTHS must be 1 or 3
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#endif
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enum {
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SUNDAY = 0,
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MONDAY,
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TUESDAY,
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WEDNESDAY,
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THURSDAY,
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FRIDAY,
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SATURDAY,
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DAYS_IN_WEEK,
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NONEDAY
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};
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#define FIRST_WEEKDAY SATURDAY /* Jan 1st, 1 was a Saturday */
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#define REFORMATION_YEAR 1752 /* Signed-off-by: Lord Chesterfield */
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#define REFORMATION_MONTH 9 /* September */
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#define FIRST_MISSING_DAY 639799 /* 3 Sep 1752 */
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#define NUMBER_MISSING_DAYS 11 /* 11 day correction */
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#define YDAY_AFTER_MISSING 258 /* 14th in Sep 1752 */
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#define DAYS_IN_YEAR 365 /* the common case, leap years are calculated */
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#define MONTHS_IN_YEAR 12
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#define DAYS_IN_MONTH 31
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#define MAXDAYS 42 /* slots in a month array */
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#define SPACE -1 /* used in day array */
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#define SMALLEST_YEAR 1
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#define DAY_LEN 3 /* 3 spaces per day */
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#define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN)
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#define HEAD_SEP 2
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#define MONTH_COLS 3 /* month columns in year view */
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#define WNUM_LEN 3
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#define TODAY_FLAG 0x400 /* flag day for highlighting */
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#define FMT_ST_LINES 9
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#define FMT_ST_CHARS 300 /* 90 suffices in most locales */
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struct fmt_st
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{
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char s[FMT_ST_LINES][FMT_ST_CHARS];
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};
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static const int days_in_month[2][13] = {
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{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
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{0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
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};
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enum {
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WEEK_NUM_DISABLED = 0,
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WEEK_NUM_MASK=0xff,
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WEEK_NUM_ISO=0x100,
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WEEK_NUM_US=0x200,
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};
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/* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */
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static char day_headings[(WEEK_LEN + 1) * 6 + 1];
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struct cal_request {
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int day;
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int month;
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int32_t year;
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int week;
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};
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struct cal_control {
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const char *full_month[MONTHS_IN_YEAR]; /* month names */
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int colormode; /* day and week number highlight */
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int num_months; /* number of months horizontally in print out */
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int weekstart; /* day the week starts, often Sun or Mon */
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int weektype; /* WEEK_TYPE_{NONE,ISO,US} */
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size_t day_width; /* day width in characters in printout */
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size_t week_width; /* 7 * day_width + possible week num */
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int gutter_width; /* spaces in between horizontal month outputs */
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struct cal_request req; /* the times user is interested */
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unsigned int julian:1, /* julian output */
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yflag:1, /* print whole year */
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header_hint:1; /* does month name + year need two lines to fit */
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};
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struct cal_month {
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int days[MAXDAYS]; /* the day numbers, or SPACE */
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int weeks[MAXDAYS / DAYS_IN_WEEK];
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int month;
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int32_t year;
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struct cal_month *next;
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};
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/* function prototypes */
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static int leap_year(int32_t year);
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static void headers_init(struct cal_control *ctl);
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static void set_consecutive_months(struct cal_month *month, int m, int32_t y);
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static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl);
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static void cal_output_header(struct cal_month *month, const struct cal_control *ctl);
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static void cal_output_months(struct cal_month *month, const struct cal_control *ctl);
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static void monthly(const struct cal_control *ctl);
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static void monthly3(const struct cal_control *ctl);
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static void yearly(const struct cal_control *ctl);
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static int day_in_year(int day, int month, int32_t year);
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static int day_in_week(int day, int month, int32_t year);
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static int week_number(int day, int month, int32_t year, const struct cal_control *ctl);
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static int week_to_day(const struct cal_control *ctl);
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static int center_str(const char *src, char *dest, size_t dest_size, size_t width);
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static void center(const char *str, size_t len, int separate);
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static void __attribute__((__noreturn__)) usage(FILE *out);
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int main(int argc, char **argv)
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{
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struct tm *local_time;
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time_t now;
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int ch;
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static struct cal_control ctl = {
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.weekstart = SUNDAY,
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.num_months = NUM_MONTHS,
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.colormode = UL_COLORMODE_UNDEF,
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.weektype = WEEK_NUM_DISABLED,
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.day_width = DAY_LEN,
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.gutter_width = 2,
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.req.day = 0,
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.req.month = 0
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};
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enum {
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OPT_COLOR = CHAR_MAX + 1
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};
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static const struct option longopts[] = {
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{"one", no_argument, NULL, '1'},
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{"three", no_argument, NULL, '3'},
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{"sunday", no_argument, NULL, 's'},
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{"monday", no_argument, NULL, 'm'},
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{"julian", no_argument, NULL, 'j'},
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{"year", no_argument, NULL, 'y'},
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{"week", optional_argument, NULL, 'w'},
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{"color", optional_argument, NULL, OPT_COLOR},
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{"version", no_argument, NULL, 'V'},
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{"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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atexit(close_stdout);
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#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
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if ((term = getenv("TERM"))) {
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int ret;
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my_setupterm(term, STDOUT_FILENO, &ret);
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if (ret > 0) {
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Senter = my_tgetstr("so","smso");
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Sexit = my_tgetstr("se","rmso");
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Slen = strlen(Senter) + strlen(Sexit);
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}
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}
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#endif
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/*
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* The traditional Unix cal utility starts the week at Sunday,
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* while ISO 8601 starts at Monday. We read the start day from
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* the locale database, which can be overridden with the
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* -s (Sunday) or -m (Monday) options.
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*/
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#if HAVE_DECL__NL_TIME_WEEK_1STDAY
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/*
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* You need to use 2 locale variables to get the first day of the week.
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* This is needed to support first_weekday=2 and first_workday=1 for
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* the rare case where working days span across 2 weeks.
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* This shell script shows the combinations and calculations involved:
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*
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* for LANG in en_US ru_RU fr_FR csb_PL POSIX; do
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* printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday)
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* date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w
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* done
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*
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* en_US: 19971130 + 1 -1 = 0 #0 = sunday
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* ru_RU: 19971130 + 2 -1 = 1
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* fr_FR: 19971201 + 1 -1 = 1
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* csb_PL: 19971201 + 2 -1 = 2
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* POSIX: 19971201 + 7 -1 = 0
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*/
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{
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int wfd;
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union { unsigned int word; char *string; } val;
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val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY);
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wfd = val.word;
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wfd = day_in_week(wfd % 100, (wfd / 100) % 100, wfd / (100 * 100));
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ctl.weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % DAYS_IN_WEEK;
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}
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#endif
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while ((ch = getopt_long(argc, argv, "13mjsywVh", longopts, NULL)) != -1)
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switch(ch) {
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case '1':
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ctl.num_months = 1; /* default */
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break;
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case '3':
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ctl.num_months = 3;
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break;
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case 's':
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ctl.weekstart = SUNDAY; /* default */
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break;
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case 'm':
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ctl.weekstart = MONDAY;
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break;
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case 'j':
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ctl.julian = 1;
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ctl.day_width = DAY_LEN + 1;
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break;
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case 'y':
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ctl.yflag = 1;
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break;
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case 'w':
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if (optarg) {
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ctl.req.week = strtos32_or_err(optarg,
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_("invalid week argument"));
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if (ctl.req.week < 1 || 53 < ctl.req.week)
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errx(EXIT_FAILURE,_("illegal week value: use 1-53"));
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}
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ctl.weektype = WEEK_NUM_US; /* default per weekstart */
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break;
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case OPT_COLOR:
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if (optarg)
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ctl.colormode = colormode_or_err(optarg,
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_("unsupported color mode"));
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break;
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case 'V':
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printf(UTIL_LINUX_VERSION);
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return EXIT_SUCCESS;
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case 'h':
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usage(stdout);
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case '?':
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default:
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usage(stderr);
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}
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argc -= optind;
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argv += optind;
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if (ctl.weektype) {
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ctl.weektype = ctl.req.week & WEEK_NUM_MASK;
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ctl.weektype |= (ctl.weekstart == MONDAY ? WEEK_NUM_ISO : WEEK_NUM_US);
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ctl.week_width = (ctl.day_width * DAYS_IN_WEEK) + WNUM_LEN;
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} else
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ctl.week_width = ctl.day_width * DAYS_IN_WEEK;
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time(&now);
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local_time = localtime(&now);
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switch(argc) {
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case 3:
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ctl.req.day = strtos32_or_err(*argv++, _("illegal day value"));
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if (ctl.req.day < 1 || DAYS_IN_MONTH < ctl.req.day)
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errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), DAYS_IN_MONTH);
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/* FALLTHROUGH */
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case 2:
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ctl.req.month = strtos32_or_err(*argv++, _("illegal month value: use 1-12"));
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if (ctl.req.month < 1 || MONTHS_IN_YEAR < ctl.req.month)
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errx(EXIT_FAILURE, _("illegal month value: use 1-12"));
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/* FALLTHROUGH */
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case 1:
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ctl.req.year = strtos32_or_err(*argv++, _("illegal year value"));
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if (ctl.req.year < SMALLEST_YEAR)
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errx(EXIT_FAILURE, _("illegal year value: use positive integer"));
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if (ctl.req.year == INT32_MAX)
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errx(EXIT_FAILURE, _("illegal year value"));
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if (ctl.req.day) {
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int dm = days_in_month[leap_year(ctl.req.year)][ctl.req.month];
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if (ctl.req.day > dm)
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errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm);
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ctl.req.day = day_in_year(ctl.req.day, ctl.req.month, ctl.req.year);
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} else if ((int32_t) (local_time->tm_year + 1900) == ctl.req.year) {
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ctl.req.day = local_time->tm_yday + 1;
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}
|
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if (!ctl.req.month && !ctl.req.week) {
|
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ctl.req.month = local_time->tm_mon + 1;
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ctl.yflag = 1;
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}
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break;
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case 0:
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ctl.req.day = local_time->tm_yday + 1;
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ctl.req.year = local_time->tm_year + 1900;
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ctl.req.month = local_time->tm_mon + 1;
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break;
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default:
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usage(stderr);
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}
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|
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if (0 < ctl.req.week) {
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int yday = week_to_day(&ctl);
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int leap = leap_year(ctl.req.year);
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int m = 1;
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if (yday < 1)
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errx(EXIT_FAILURE, _("illegal week value: year %d "
|
|
"doesn't have week %d"),
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ctl.req.year, ctl.req.week);
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while (m <= 12 && yday > days_in_month[leap][m])
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yday -= days_in_month[leap][m++];
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if (m > 12) {
|
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/* In some years (e.g. 2010 in ISO mode) it's possible
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|
* to have a remnant of week 53 starting the year yet
|
|
* the year in question ends during 52, in this case
|
|
* we're assuming that early remnant is being referred
|
|
* to if 53 is given as argument. */
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|
if (ctl.req.week != week_number(31, 12, ctl.req.year - 1, &ctl))
|
|
errx(EXIT_FAILURE,
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_("illegal week value: year %d "
|
|
"doesn't have week %d"),
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ctl.req.year, ctl.req.week);
|
|
}
|
|
if (!ctl.req.month)
|
|
ctl.req.month = 12 < m ? 1 : m;
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|
}
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|
|
headers_init(&ctl);
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|
|
if (!colors_init(ctl.colormode, "cal")) {
|
|
ctl.req.day = 0;
|
|
ctl.weektype &= ~WEEK_NUM_MASK;
|
|
}
|
|
|
|
if (ctl.yflag) {
|
|
if (ctl.julian)
|
|
ctl.num_months = MONTH_COLS - 1;
|
|
else
|
|
ctl.num_months = MONTH_COLS;
|
|
ctl.gutter_width = 3;
|
|
yearly(&ctl);
|
|
} else if (ctl.num_months == 1)
|
|
monthly(&ctl);
|
|
else if (ctl.num_months == 3)
|
|
monthly3(&ctl);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/* leap year -- account for gregorian reformation in 1752 */
|
|
static int leap_year(int32_t year)
|
|
{
|
|
if (year <= REFORMATION_YEAR)
|
|
return !(year % 4);
|
|
else
|
|
return ( !(year % 4) && (year % 100) ) || !(year % 400);
|
|
}
|
|
|
|
static void headers_init(struct cal_control *ctl)
|
|
{
|
|
size_t i, wd;
|
|
char *cur_dh = day_headings;
|
|
char tmp[FMT_ST_CHARS];
|
|
size_t year_len;
|
|
|
|
year_len = snprintf(tmp, sizeof(tmp), "%d", ctl->req.year);
|
|
|
|
for (i = 0; i < DAYS_IN_WEEK; i++) {
|
|
size_t space_left;
|
|
wd = (i + ctl->weekstart) % DAYS_IN_WEEK;
|
|
|
|
if (i)
|
|
strcat(cur_dh++, " ");
|
|
space_left = sizeof(day_headings) - (cur_dh - day_headings);
|
|
|
|
if (space_left <= (ctl->day_width - 1))
|
|
break;
|
|
cur_dh += center_str(nl_langinfo(ABDAY_1 + wd), cur_dh,
|
|
space_left, ctl->day_width - 1);
|
|
}
|
|
|
|
for (i = 0; i < MONTHS_IN_YEAR; i++) {
|
|
ctl->full_month[i] = nl_langinfo(MON_1 + i);
|
|
/* The +1 after year_len is space in between month and year. */
|
|
if (ctl->week_width < strlen(ctl->full_month[i]) + year_len + 1)
|
|
ctl->header_hint = 1;
|
|
}
|
|
}
|
|
|
|
static void set_consecutive_months(struct cal_month *month, int m, int32_t y)
|
|
{
|
|
struct cal_month *i;
|
|
for (i = month; i; i = i->next) {
|
|
i->month = m++;
|
|
i->year = y;
|
|
if (MONTHS_IN_YEAR < m) {
|
|
m = 1;
|
|
y++;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl)
|
|
{
|
|
int first_week_day = day_in_week(1, month->month, month->year);
|
|
int month_days;
|
|
int i, j, weeklines = 0;
|
|
|
|
if (ctl->julian)
|
|
j = day_in_year(1, month->month, month->year);
|
|
else
|
|
j = 1;
|
|
month_days = j + days_in_month[leap_year(month->year)][month->month];
|
|
|
|
/* True when Sunday is not first day in the output week. */
|
|
if (ctl->weekstart) {
|
|
first_week_day -= ctl->weekstart;
|
|
if (first_week_day < 0)
|
|
first_week_day = DAYS_IN_WEEK - ctl->weekstart;
|
|
month_days += ctl->weekstart - 1;
|
|
}
|
|
|
|
/* Fill day array. */
|
|
for (i = 0; i < MAXDAYS; i++) {
|
|
if (0 < first_week_day) {
|
|
month->days[i] = SPACE;
|
|
first_week_day--;
|
|
continue;
|
|
}
|
|
if (j < month_days) {
|
|
if (month->year == 1752 && month->month == 9 && (j == 3 || j == 247))
|
|
j += NUMBER_MISSING_DAYS;
|
|
month->days[i] = j;
|
|
j++;
|
|
continue;
|
|
}
|
|
month->days[i] = SPACE;
|
|
weeklines++;
|
|
}
|
|
|
|
/* Add week numbers */
|
|
if (ctl->weektype) {
|
|
int weeknum = week_number(1, month->month, month->year, ctl);
|
|
weeklines = MAXDAYS / DAYS_IN_WEEK - weeklines / DAYS_IN_WEEK;
|
|
for (i = 0; i < MAXDAYS / DAYS_IN_WEEK; i++) {
|
|
if (0 < weeklines)
|
|
month->weeks[i] = weeknum++;
|
|
else
|
|
month->weeks[i] = SPACE;
|
|
weeklines--;
|
|
if (52 < weeknum && i == 0)
|
|
weeknum = week_number(month->days[DAYS_IN_WEEK * (i + 1)], 1, month->year, ctl);
|
|
else if (52 < weeknum)
|
|
weeknum = week_number(31, 12, month->year, ctl);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void cal_output_header(struct cal_month *month, const struct cal_control *ctl)
|
|
{
|
|
char out[FMT_ST_CHARS];
|
|
struct cal_month *i;
|
|
|
|
if (ctl->header_hint || ctl->yflag) {
|
|
for (i = month; i; i = i->next) {
|
|
sprintf(out, _("%s"), ctl->full_month[i->month - 1]);
|
|
center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width);
|
|
}
|
|
if (!ctl->yflag) {
|
|
fputs("\n", stdout);
|
|
for (i = month; i; i = i->next) {
|
|
sprintf(out, _("%d"), i->year);
|
|
center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width);
|
|
}
|
|
}
|
|
} else {
|
|
for (i = month; i; i = i->next) {
|
|
sprintf(out, _("%s %d"), ctl->full_month[i->month - 1], i->year);
|
|
center(out, ctl->week_width - 1, i->next == NULL ? 0 : ctl->gutter_width);
|
|
}
|
|
}
|
|
puts("");
|
|
for (i = month; i; i = i->next) {
|
|
if (ctl->weektype) {
|
|
if (ctl->julian)
|
|
printf("%*s%s", (int)ctl->day_width - 1, "", day_headings);
|
|
else
|
|
printf("%*s%s", (int)ctl->day_width, "", day_headings);
|
|
} else
|
|
fputs(day_headings, stdout);
|
|
if (i->next != NULL)
|
|
printf("%*s", ctl->gutter_width, "");
|
|
}
|
|
puts("");
|
|
}
|
|
|
|
static void cal_output_months(struct cal_month *month, const struct cal_control *ctl)
|
|
{
|
|
int reqday, week_line, d;
|
|
int skip;
|
|
struct cal_month *i;
|
|
|
|
for (week_line = 0; week_line < MAXDAYS / DAYS_IN_WEEK; week_line++) {
|
|
for (i = month; i; i = i->next) {
|
|
/* Determine the day that should be highlighted. */
|
|
reqday = 0;
|
|
if (i->month == ctl->req.month && i->year == ctl->req.year) {
|
|
if (ctl->julian)
|
|
reqday = ctl->req.day;
|
|
else
|
|
reqday =
|
|
ctl->req.day + 1 - day_in_year(1, i->month,
|
|
i->year);
|
|
}
|
|
|
|
if (ctl->weektype) {
|
|
if (0 < i->weeks[week_line]) {
|
|
if ((ctl->weektype & WEEK_NUM_MASK) ==
|
|
i->weeks[week_line])
|
|
printf("%s%2d%s", Senter, i->weeks[week_line],
|
|
Sexit);
|
|
else
|
|
printf("%2d", i->weeks[week_line]);
|
|
} else
|
|
printf("%2s", "");
|
|
skip = ctl->day_width;
|
|
} else
|
|
/* First day of the week is one char narrower than the other days,
|
|
* unless week number is printed. */
|
|
skip = ctl->day_width - 1;
|
|
|
|
for (d = DAYS_IN_WEEK * week_line;
|
|
d < DAYS_IN_WEEK * week_line + DAYS_IN_WEEK; d++) {
|
|
if (0 < i->days[d]) {
|
|
if (reqday == i->days[d])
|
|
printf("%*s%s%*d%s", skip - (ctl->julian ? 3 : 2),
|
|
"", Senter, (ctl->julian ? 3 : 2),
|
|
i->days[d], Sexit);
|
|
else
|
|
printf("%*d", skip, i->days[d]);
|
|
} else
|
|
printf("%*s", skip, "");
|
|
if (skip < (int)ctl->day_width)
|
|
skip++;
|
|
}
|
|
if (i->next != NULL)
|
|
printf("%*s", ctl->gutter_width, "");
|
|
}
|
|
if (i == NULL)
|
|
printf("%*s\n", ctl->gutter_width - (ctl->yflag ? 0 : 1), "");
|
|
}
|
|
}
|
|
|
|
static void monthly(const struct cal_control *ctl)
|
|
{
|
|
struct cal_month month;
|
|
|
|
month.month = ctl->req.month;
|
|
month.year = ctl->req.year;
|
|
month.next = NULL;
|
|
|
|
cal_fill_month(&month, ctl);
|
|
|
|
cal_output_header(&month, ctl);
|
|
cal_output_months(&month, ctl);
|
|
}
|
|
|
|
static void monthly3(const struct cal_control *ctl)
|
|
{
|
|
struct cal_month m1, m2, m3, *i;
|
|
int first_month;
|
|
int32_t first_year;
|
|
|
|
m1.next = &m2;
|
|
m2.next = &m3;
|
|
m3.next = NULL;
|
|
|
|
if (ctl->req.month == 1) {
|
|
first_month = MONTHS_IN_YEAR;
|
|
first_year = ctl->req.year - 1;
|
|
} else {
|
|
first_month = ctl->req.month - 1;
|
|
first_year = ctl->req.year;
|
|
}
|
|
|
|
set_consecutive_months(&m1, first_month, first_year);
|
|
for (i = &m1; i; i = i->next)
|
|
cal_fill_month(i, ctl);
|
|
cal_output_header(&m1, ctl);
|
|
cal_output_months(&m1, ctl);
|
|
}
|
|
|
|
static void yearly(const struct cal_control *ctl)
|
|
{
|
|
struct cal_month m1, m2, m3, *i;
|
|
int month;
|
|
char out[FMT_ST_CHARS];
|
|
int year_width = 0;
|
|
|
|
m1.next = &m2;
|
|
if (ctl->julian)
|
|
m2.next = NULL;
|
|
else {
|
|
m2.next = &m3;
|
|
m3.next = NULL;
|
|
}
|
|
|
|
/* year header */
|
|
for (i = &m1; i; i = i->next)
|
|
year_width += ctl->week_width + 1;
|
|
if (ctl->julian)
|
|
year_width--;
|
|
sprintf(out, "%d", ctl->req.year);
|
|
center(out, year_width, 0);
|
|
fputs("\n\n", stdout);
|
|
|
|
for (month = 1; month < MONTHS_IN_YEAR; month += ctl->julian ? 2 : 3) {
|
|
set_consecutive_months(&m1, month, ctl->req.year);
|
|
for (i = &m1; i; i = i->next)
|
|
cal_fill_month(i, ctl);
|
|
cal_output_header(&m1, ctl);
|
|
cal_output_months(&m1, ctl);
|
|
}
|
|
/* Is empty line at the end year output really needed? */
|
|
puts("");
|
|
}
|
|
|
|
/*
|
|
* day_in_year --
|
|
* return the 1 based day number within the year
|
|
*/
|
|
static int day_in_year(int day, int month, int32_t year)
|
|
{
|
|
int i, leap;
|
|
|
|
leap = leap_year(year);
|
|
for (i = 1; i < month; i++)
|
|
day += days_in_month[leap][i];
|
|
return day;
|
|
}
|
|
|
|
/*
|
|
* day_in_week
|
|
* return the 0 based day number for any date from 1 Jan. 1 to
|
|
* 31 Dec. 9999. Assumes the Gregorian reformation eliminates
|
|
* 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday
|
|
* during the period of 11 days.
|
|
*/
|
|
static int day_in_week(int day, int month, int32_t year)
|
|
{
|
|
static const int reform[] = {
|
|
SUNDAY, WEDNESDAY, TUESDAY, FRIDAY, SUNDAY, WEDNESDAY,
|
|
FRIDAY, MONDAY, THURSDAY, SATURDAY, TUESDAY, THURSDAY
|
|
};
|
|
static const int old[] = {
|
|
FRIDAY, MONDAY, SUNDAY, WEDNESDAY, FRIDAY, MONDAY,
|
|
WEDNESDAY, SATURDAY, TUESDAY, THURSDAY, SUNDAY, TUESDAY
|
|
};
|
|
if (year != 1753)
|
|
year -= month < 3;
|
|
else
|
|
year -= (month < 3) + 14;
|
|
if (REFORMATION_YEAR < year
|
|
|| (year == REFORMATION_YEAR && 9 < month)
|
|
|| (year == REFORMATION_YEAR && month == 9 && 13 < day))
|
|
return (year + (year / 4) - (year / 100) + (year / 400) + reform[month - 1] +
|
|
day) % 7;
|
|
if (year < REFORMATION_YEAR
|
|
|| (year == REFORMATION_YEAR && month < 9)
|
|
|| (year == REFORMATION_YEAR && month == 9 && day < 3))
|
|
return (year + year / 4 + old[month - 1] + day) % 7;
|
|
return NONEDAY;
|
|
}
|
|
|
|
/*
|
|
* week_number
|
|
* return the week number of a given date, 1..53.
|
|
* Supports ISO-8601 and North American modes.
|
|
* Day may be given as Julian day of the year mode, in which
|
|
* case the month is disregarded entirely.
|
|
*/
|
|
static int week_number(int day, int month, int32_t year, const struct cal_control *ctl)
|
|
{
|
|
int fday = 0, yday;
|
|
int wday = day_in_week(1, 1, year);
|
|
|
|
if (ctl->weektype & WEEK_NUM_ISO)
|
|
fday = wday + (wday >= FRIDAY ? -2 : 5);
|
|
else
|
|
/* WEEK_NUM_US
|
|
* - according to gcal, the first Sun is in the first week
|
|
* - according to wikipedia, the first Sat is in the first week
|
|
*/
|
|
fday = wday + (wday == SUNDAY ? 6 : -1);
|
|
|
|
/* For julian dates the month can be set to 1, the global julian
|
|
* variable cannot be relied upon here, because we may recurse
|
|
* internally for 31.12. which would not work. */
|
|
if (day > 31)
|
|
month = 1;
|
|
|
|
yday = day_in_year(day,month,year);
|
|
if (year == REFORMATION_YEAR) {
|
|
if (yday >= YDAY_AFTER_MISSING)
|
|
fday -= NUMBER_MISSING_DAYS;
|
|
}
|
|
|
|
/* Last year is last year */
|
|
if (yday + fday < 7)
|
|
return week_number(31, 12, year - 1, ctl);
|
|
|
|
/* Or it could be part of the next year. The reformation year had less
|
|
* days than 365 making this check invalid, but reformation year ended
|
|
* on Sunday and in week 51, so it's ok here. */
|
|
if (ctl->weektype == WEEK_NUM_ISO && yday >= 363
|
|
&& day_in_week(day, month, year) >= MONDAY
|
|
&& day_in_week(day, month, year) <= WEDNESDAY
|
|
&& day_in_week(31, 12, year) >= MONDAY
|
|
&& day_in_week(31, 12, year) <= WEDNESDAY)
|
|
return week_number(1, 1, year + 1, ctl);
|
|
|
|
return (yday + fday) / 7;
|
|
}
|
|
|
|
/*
|
|
* week_to_day
|
|
* return the yday of the first day in a given week inside
|
|
* the given year. This may be something other than Monday
|
|
* for ISO-8601 modes. For North American numbering this
|
|
* always returns a Sunday.
|
|
*/
|
|
static int week_to_day(const struct cal_control *ctl)
|
|
{
|
|
int yday, wday;
|
|
|
|
wday = day_in_week(1, 1, ctl->req.year);
|
|
yday = ctl->req.week * 7 - wday;
|
|
|
|
if (ctl->weektype & WEEK_NUM_ISO)
|
|
yday -= (wday >= FRIDAY ? -2 : 5);
|
|
else
|
|
yday -= (wday == SUNDAY ? 6 : -1); /* WEEK_NUM_US */
|
|
if (yday <= 0)
|
|
return 1;
|
|
|
|
return yday;
|
|
}
|
|
|
|
/*
|
|
* Center string, handling multibyte characters appropriately.
|
|
* In addition if the string is too large for the width it's truncated.
|
|
* The number of trailing spaces may be 1 less than the number of leading spaces.
|
|
*/
|
|
static int center_str(const char* src, char* dest,
|
|
size_t dest_size, size_t width)
|
|
{
|
|
return mbsalign(src, dest, dest_size, &width,
|
|
MBS_ALIGN_CENTER, MBA_UNIBYTE_FALLBACK);
|
|
}
|
|
|
|
static void center(const char *str, size_t len, int separate)
|
|
{
|
|
char lineout[FMT_ST_CHARS];
|
|
|
|
center_str(str, lineout, ARRAY_SIZE(lineout), len);
|
|
my_putstring(lineout);
|
|
|
|
if (separate) {
|
|
snprintf(lineout, sizeof(lineout), "%*s", separate, "");
|
|
my_putstring(lineout);
|
|
}
|
|
}
|
|
|
|
static void __attribute__ ((__noreturn__)) usage(FILE * out)
|
|
{
|
|
fputs(USAGE_HEADER, out);
|
|
fprintf(out, _(" %s [options] [[[day] month] year]\n"), program_invocation_short_name);
|
|
|
|
fputs(USAGE_SEPARATOR, out);
|
|
fputs(_("Display a calendar, or some part of it.\n"), out);
|
|
fputs(_("Without any arguments, display the current month.\n"), out);
|
|
|
|
fputs(USAGE_OPTIONS, out);
|
|
fputs(_(" -1, --one show only a single month (default)\n"), out);
|
|
fputs(_(" -3, --three show three months spanning the date\n"), out);
|
|
fputs(_(" -s, --sunday Sunday as first day of week\n"), out);
|
|
fputs(_(" -m, --monday Monday as first day of week\n"), out);
|
|
fputs(_(" -j, --julian output Julian dates\n"), out);
|
|
fputs(_(" -y, --year show the whole year\n"), out);
|
|
fputs(_(" -w, --week[=<num>] show US or ISO-8601 week numbers\n"), out);
|
|
fputs(_(" --color[=<when>] colorize messages (auto, always or never)\n"), out);
|
|
|
|
fputs(USAGE_SEPARATOR, out);
|
|
fputs(USAGE_HELP, out);
|
|
fputs(USAGE_VERSION, out);
|
|
fprintf(out, USAGE_MAN_TAIL("cal(1)"));
|
|
|
|
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|