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/*
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kim Letkeman.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* 1999-02-01 Jean-Francois Bignolles: added option '-m' to display
* monday as the first day of the week.
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
* - added Native Language Support
*
* 2000-09-01 Michael Charles Pruznick <dummy@netwiz.net>
* Added "-3" option to print prev/next month with current.
* Added over-ridable default NUM_MONTHS and "-1" option to
* get traditional output when -3 is the default. I hope that
* enough people will like -3 as the default that one day the
* product can be shipped that way.
*
* 2001-05-07 Pablo Saratxaga <pablo@mandrakesoft.com>
* Fixed the bugs with multi-byte charset (zg: cjk, utf-8)
* displaying. made the 'month year' ("%s %d") header translatable
* so it can be adapted to conventions used by different languages
* added support to read "first_weekday" locale information
* still to do: support for 'cal_direction' (will require a major
* rewrite of the displaying) and proper handling of RTL scripts
*/
#include <sys/types.h>
#include <ctype.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include "c.h"
#include "closestream.h"
#include "nls.h"
#include "mbsalign.h"
#include "strutils.h"
#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW)
#ifdef HAVE_NCURSES_H
#include <ncurses.h>
#elif defined(HAVE_NCURSES_NCURSES_H)
#include <ncurses/ncurses.h>
#endif
#include <term.h> /* include after <curses.h> */
static void
my_setupterm(const char *term, int fildes, int *errret) {
setupterm((char*)term, fildes, errret);
}
static void
my_putstring(char *s) {
putp(s);
}
static const char *
my_tgetstr(char *s __attribute__ ((__unused__)), char *ss) {
const char* ret = tigetstr(ss);
if (!ret || ret==(char*)-1)
return "";
else
return ret;
}
#elif defined(HAVE_LIBTERMCAP)
#include <termcap.h>
char termbuffer[4096];
char tcbuffer[4096];
char *strbuf = termbuffer;
static void
my_setupterm(const char *term, int fildes, int *errret) {
*errret = tgetent(tcbuffer, term);
}
static void
my_putstring(char *s) {
tputs (s, 1, putchar);
}
static const char *
my_tgetstr(char *s, char *ss __attribute__ ((__unused__))) {
const char* ret = tgetstr(s, &strbuf);
if (!ret)
return "";
else
return ret;
}
#else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */
static void
my_putstring(char *s) {
fputs(s, stdout);
}
#endif
const char *term="";
const char *Senter="", *Sexit="";/* enter and exit standout mode */
int Slen; /* strlen of Senter+Sexit */
char *Hrow; /* pointer to highlighted row in month */
#include "widechar.h"
/* allow compile-time define to over-ride default */
#ifndef NUM_MONTHS
#define NUM_MONTHS 1
#endif
#if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 )
#error NUM_MONTHS must be 1 or 3
#endif
#define THURSDAY 4 /* for reformation */
#define SATURDAY 6 /* 1 Jan 1 was a Saturday */
#define FIRST_MISSING_DAY 639799 /* 3 Sep 1752 */
#define NUMBER_MISSING_DAYS 11 /* 11 day correction */
#define MAXDAYS 42 /* slots in a month array */
#define SPACE -1 /* used in day array */
static int days_in_month[2][13] = {
{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
{0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
};
#define SEP1752_OFS 4 /* sep1752[4] is a Sunday */
/* 1 Sep 1752 is represented by sep1752[6] and j_sep1752[6] */
int sep1752[MAXDAYS+6] = {
SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, 1, 2, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE
}, j_sep1752[MAXDAYS+6] = {
SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, 245, 246, 258, 259, 260,
261, 262, 263, 264, 265, 266, 267,
268, 269, 270, 271, 272, 273, 274,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE
}, empty[MAXDAYS] = {
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE,
SPACE, SPACE, SPACE, SPACE, SPACE, SPACE, SPACE
};
#define DAY_LEN 3 /* 3 spaces per day */
#define J_DAY_LEN 4 /* 4 spaces per day */
#define WEEK_LEN 21 /* 7 days * 3 characters */
#define J_WEEK_LEN 28 /* 7 days * 4 characters */
#define HEAD_SEP 2 /* spaces between day headings */
#define J_HEAD_SEP 2
/* utf-8 can have up to 6 bytes per char; and an extra byte for ending \0 */
char day_headings[WEEK_LEN*6+1];
/* weekstart = 1 => " M Tu W Th F S S " */
char j_day_headings[J_WEEK_LEN*6+1];
/* weekstart = 1 => " M Tu W Th F S S " */
const char *full_month[12];
/* leap year -- account for gregorian reformation in 1752 */
#define leap_year(yr) \
((yr) <= 1752 ? !((yr) % 4) : \
(!((yr) % 4) && ((yr) % 100)) || !((yr) % 400))
/* number of centuries since 1700, not inclusive */
#define centuries_since_1700(yr) \
((yr) > 1700 ? (yr) / 100 - 17 : 0)
/* number of centuries since 1700 whose modulo of 400 is 0 */
#define quad_centuries_since_1700(yr) \
((yr) > 1600 ? ((yr) - 1600) / 400 : 0)
/* number of leap years between year 1 and this year, not inclusive */
#define leap_years_since_year_1(yr) \
((yr) / 4 - centuries_since_1700(yr) + quad_centuries_since_1700(yr))
/* 0 => sunday, 1 => monday */
int weekstart=0;
int julian;
#define TODAY_FLAG 0x400 /* flag day for highlighting */
#define FMT_ST_LINES 8
#define FMT_ST_CHARS 300 /* 90 suffices in most locales */
struct fmt_st
{
char s[FMT_ST_LINES][FMT_ST_CHARS];
};
char * ascii_day(char *, int);
int center_str(const char* src, char* dest, size_t dest_size, size_t width);
void center(const char *, size_t, int);
void day_array(int, int, int, int *);
int day_in_week(int, int, int);
int day_in_year(int, int, int);
void yearly(int, int);
void j_yearly(int, int);
void do_monthly(int, int, int, struct fmt_st*);
void monthly(int, int, int);
void monthly3(int, int, int);
void trim_trailing_spaces(char *);
static void __attribute__ ((__noreturn__)) usage(FILE * out);
void headers_init(void);
int
main(int argc, char **argv) {
struct tm *local_time;
time_t now;
int ch, day, month, year, yflag;
int num_months = NUM_MONTHS;
static const struct option longopts[] = {
{"one", no_argument, NULL, '1'},
{"three", no_argument, NULL, '3'},
{"sunday", no_argument, NULL, 's'},
{"monday", no_argument, NULL, 'm'},
{"julian", no_argument, NULL, 'j'},
{"year", no_argument, NULL, 'y'},
{"version", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
if ((term = getenv("TERM"))) {
int ret;
my_setupterm(term, 1, &ret);
if (ret > 0) {
Senter = my_tgetstr("so","smso");
Sexit = my_tgetstr("se","rmso");
Slen = strlen(Senter) + strlen(Sexit);
}
}
#endif
/*
* The traditional Unix cal utility starts the week at Sunday,
* while ISO 8601 starts at Monday. We read the start day from
* the locale database, which can be overridden with the
* -s (Sunday) or -m (Monday) options.
*/
#if HAVE_DECL__NL_TIME_WEEK_1STDAY
/*
* You need to use 2 locale variables to get the first day of the week.
* This is needed to support first_weekday=2 and first_workday=1 for
* the rare case where working days span across 2 weeks.
* This shell script shows the combinations and calculations involved:
*
* for LANG in en_US ru_RU fr_FR csb_PL POSIX; do
* printf "%s:\t%s + %s -1 = " $LANG $(locale week-1stday first_weekday)
* date -d"$(locale week-1stday) +$(($(locale first_weekday)-1))day" +%w
* done
*
* en_US: 19971130 + 1 -1 = 0 #0 = sunday
* ru_RU: 19971130 + 2 -1 = 1
* fr_FR: 19971201 + 1 -1 = 1
* csb_PL: 19971201 + 2 -1 = 2
* POSIX: 19971201 + 7 -1 = 0
*/
{
int wfd;
union { unsigned int word; char *string; } val;
val.string = nl_langinfo(_NL_TIME_WEEK_1STDAY);
wfd = val.word;
wfd = day_in_week(wfd % 100, (wfd / 100) % 100, wfd / (100 * 100));
weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % 7;
}
#endif
yflag = 0;
while ((ch = getopt_long(argc, argv, "13mjsyVh", longopts, NULL)) != -1)
switch(ch) {
case '1':
num_months = 1; /* default */
break;
case '3':
num_months = 3;
break;
case 's':
weekstart = 0; /* default */
break;
case 'm':
weekstart = 1;
break;
case 'j':
julian = 1;
break;
case 'y':
yflag = 1;
break;
case 'V':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
return EXIT_SUCCESS;
case 'h':
usage(stdout);
case '?':
default:
usage(stderr);
}
argc -= optind;
argv += optind;
time(&now);
local_time = localtime(&now);
day = month = year = 0;
switch(argc) {
case 3:
day = strtos32_or_err(*argv++, _("illegal day value"));
if (day < 1 || 31 < day)
errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), 31);
/* FALLTHROUGH */
case 2:
month = strtos32_or_err(*argv++, _("illegal month value: use 1-12"));
if (month < 1 || 12 < month)
errx(EXIT_FAILURE, _("illegal month value: use 1-12"));
/* FALLTHROUGH */
case 1:
year = strtos32_or_err(*argv++, _("illegal year value: use 1-9999"));
if (year < 1 || 9999 < year)
errx(EXIT_FAILURE, _("illegal year value: use 1-9999"));
if (day) {
int dm = days_in_month[leap_year(year)][month];
if (day > dm)
errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm);
day = day_in_year(day, month, year);
} else if ((local_time->tm_year + 1900) == year) {
day = local_time->tm_yday + 1;
}
if (!month)
yflag=1;
break;
case 0:
day = local_time->tm_yday + 1;
year = local_time->tm_year + 1900;
month = local_time->tm_mon + 1;
break;
default:
usage(stderr);
}
headers_init();
if (!isatty(1))
day = 0; /* don't highlight */
if (yflag && julian)
j_yearly(day, year);
else if (yflag)
yearly(day, year);
else if (num_months == 1)
monthly(day, month, year);
else if (num_months == 3)
monthly3(day, month, year);
return EXIT_SUCCESS;
}
void headers_init(void)
{
int i, wd;
char *cur_dh = day_headings, *cur_j_dh = j_day_headings;
strcpy(day_headings, "");
strcpy(j_day_headings, "");
for (i = 0; i < 7; i++) {
ssize_t space_left;
wd = (i + weekstart) % 7;
if (i)
strcat(cur_dh++, " ");
space_left =
sizeof(day_headings) - (cur_dh - day_headings);
if (space_left <= 2)
break;
cur_dh +=
center_str(nl_langinfo(ABDAY_1 + wd), cur_dh,
space_left, 2);
if (i)
strcat(cur_j_dh++, " ");
space_left =
sizeof(j_day_headings) - (cur_j_dh - j_day_headings);
if (space_left <= 3)
break;
cur_j_dh +=
center_str(nl_langinfo(ABDAY_1 + wd), cur_j_dh,
space_left, 3);
}
for (i = 0; i < 12; i++)
full_month[i] = nl_langinfo(MON_1 + i);
}
void
do_monthly(int day, int month, int year, struct fmt_st *out) {
int col, row, days[MAXDAYS];
char *p, lineout[FMT_ST_CHARS];
int width = (julian ? J_WEEK_LEN : WEEK_LEN) - 1;
day_array(day, month, year, days);
/*
* %s is the month name, %d the year number.
* you can change the order and/or add something here; eg for
* Basque the translation should be: "%2$dko %1$s", and
* the Vietnamese should be "%s na(m %d", etc.
*/
snprintf(lineout, sizeof(lineout), _("%s %d"),
full_month[month - 1], year);
center_str(lineout, out->s[0], ARRAY_SIZE(out->s[0]), width);
snprintf(out->s[1], FMT_ST_CHARS, "%s",
julian ? j_day_headings : day_headings);
for (row = 0; row < 6; row++) {
int has_hl = 0;
for (col = 0, p = lineout; col < 7; col++) {
int xd = days[row * 7 + col];
if (xd != SPACE && (xd & TODAY_FLAG))
has_hl = 1;
p = ascii_day(p, xd);
}
*p = '\0';
trim_trailing_spaces(lineout);
snprintf(out->s[row+2], FMT_ST_CHARS, "%s", lineout);
if (has_hl)
Hrow = out->s[row+2];
}
}
void
monthly(int day, int month, int year) {
int i;
struct fmt_st out;
do_monthly(day, month, year, &out);
for (i = 0; i < FMT_ST_LINES; i++) {
my_putstring(out.s[i]);
putchar('\n');
}
}
void
monthly3(int day, int month, int year) {
char lineout[FMT_ST_CHARS];
int i;
int width;
struct fmt_st out_prev;
struct fmt_st out_curm;
struct fmt_st out_next;
int prev_month, prev_year;
int next_month, next_year;
if (month == 1) {
prev_month = 12;
prev_year = year - 1;
} else {
prev_month = month - 1;
prev_year = year;
}
if (month == 12) {
next_month = 1;
next_year = year + 1;
} else {
next_month = month + 1;
next_year = year;
}
do_monthly(day, prev_month, prev_year, &out_prev);
do_monthly(day, month, year, &out_curm);
do_monthly(day, next_month, next_year, &out_next);
width = (julian ? J_WEEK_LEN : WEEK_LEN) -1;
for (i = 0; i < 2; i++)
printf("%s %s %s\n", out_prev.s[i], out_curm.s[i], out_next.s[i]);
for (i = 2; i < FMT_ST_LINES; i++) {
int w1, w2, w3;
w1 = w2 = w3 = width;
#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
/* adjust width to allow for non printable characters */
w1 += (out_prev.s[i] == Hrow ? Slen : 0);
w2 += (out_curm.s[i] == Hrow ? Slen : 0);
w3 += (out_next.s[i] == Hrow ? Slen : 0);
#endif
snprintf(lineout, sizeof(lineout), "%-*s %-*s %-*s\n",
w1, out_prev.s[i],
w2, out_curm.s[i],
w3, out_next.s[i]);
my_putstring(lineout);
}
}
void
j_yearly(int day, int year) {
int col, *dp, i, month, row, which_cal;
int days[12][MAXDAYS];
char *p, lineout[80];
snprintf(lineout, sizeof(lineout), "%d", year);
center(lineout, J_WEEK_LEN*2 + J_HEAD_SEP - 1, 0);
printf("\n\n");
for (i = 0; i < 12; i++)
day_array(day, i + 1, year, days[i]);
memset(lineout, ' ', sizeof(lineout) - 1);
lineout[sizeof(lineout) - 1] = '\0';
for (month = 0; month < 12; month += 2) {
center(full_month[month], J_WEEK_LEN-1, J_HEAD_SEP+1);
center(full_month[month + 1], J_WEEK_LEN-1, 0);
printf("\n%s%*s %s\n", j_day_headings, J_HEAD_SEP, "",
j_day_headings);
for (row = 0; row < 6; row++) {
p = lineout;
for (which_cal = 0; which_cal < 2; which_cal++) {
dp = &days[month + which_cal][row * 7];
for (col = 0; col < 7; col++)
p = ascii_day(p, *dp++);
p += sprintf(p, " ");
}
*p = '\0';
trim_trailing_spaces(lineout);
my_putstring(lineout);
putchar('\n');
}
}
printf("\n");
}
void
yearly(int day, int year) {
int col, *dp, i, month, row, which_cal;
int days[12][MAXDAYS];
char *p, lineout[100];
snprintf(lineout, sizeof(lineout), "%d", year);
center(lineout, WEEK_LEN*3 + HEAD_SEP*2 - 1, 0);
printf("\n\n");
for (i = 0; i < 12; i++)
day_array(day, i + 1, year, days[i]);
memset(lineout, ' ', sizeof(lineout) - 1);
lineout[sizeof(lineout) - 1] = '\0';
for (month = 0; month < 12; month += 3) {
center(full_month[month], WEEK_LEN-1, HEAD_SEP+1);
center(full_month[month + 1], WEEK_LEN-1, HEAD_SEP+1);
center(full_month[month + 2], WEEK_LEN-1, 0);
printf("\n%s%*s %s%*s %s\n", day_headings, HEAD_SEP,
"", day_headings, HEAD_SEP, "", day_headings);
for (row = 0; row < 6; row++) {
p = lineout;
for (which_cal = 0; which_cal < 3; which_cal++) {
dp = &days[month + which_cal][row * 7];
for (col = 0; col < 7; col++)
p = ascii_day(p, *dp++);
p += sprintf(p, " ");
}
*p = '\0';
trim_trailing_spaces(lineout);
my_putstring(lineout);
putchar('\n');
}
}
putchar('\n');
}
/*
* day_array --
* Fill in an array of 42 integers with a calendar. Assume for a moment
* that you took the (maximum) 6 rows in a calendar and stretched them
* out end to end. You would have 42 numbers or spaces. This routine
* builds that array for any month from Jan. 1 through Dec. 9999.
*/
void
day_array(int day, int month, int year, int *days) {
int julday, daynum, dw, dm;
int *d_sep1752;
if (month == 9 && year == 1752) {
int sep1752_ofs = (weekstart + SEP1752_OFS) % 7;
d_sep1752 = julian ? j_sep1752 : sep1752;
memcpy(days, d_sep1752 + sep1752_ofs, MAXDAYS * sizeof(int));
for (dm=0; dm<MAXDAYS; dm++)
if (j_sep1752[dm + sep1752_ofs] == day)
days[dm] |= TODAY_FLAG;
return;
}
memcpy(days, empty, MAXDAYS * sizeof(int));
dm = days_in_month[leap_year(year)][month];
dw = (day_in_week(1, month, year) - weekstart + 7) % 7;
julday = day_in_year(1, month, year);
daynum = julian ? julday : 1;
while (dm--) {
days[dw] = daynum++;
if (julday++ == day)
days[dw] |= TODAY_FLAG;
dw++;
}
}
/*
* day_in_year --
* return the 1 based day number within the year
*/
int
day_in_year(int day, int month, int 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. Returns Thursday for all
* missing days.
*/
int
day_in_week(int day, int month, int year) {
long temp;
temp = (long)(year - 1) * 365 + leap_years_since_year_1(year - 1)
+ day_in_year(day, month, year);
if (temp < FIRST_MISSING_DAY)
return ((temp - 1 + SATURDAY) % 7);
if (temp >= (FIRST_MISSING_DAY + NUMBER_MISSING_DAYS))
return (((temp - 1 + SATURDAY) - NUMBER_MISSING_DAYS) % 7);
return (THURSDAY);
}
char *
ascii_day(char *p, int day) {
int display, val;
int highlight = 0;
static char *aday[] = {
"",
" 1", " 2", " 3", " 4", " 5", " 6", " 7",
" 8", " 9", "10", "11", "12", "13", "14",
"15", "16", "17", "18", "19", "20", "21",
"22", "23", "24", "25", "26", "27", "28",
"29", "30", "31",
};
if (day == SPACE) {
int len = julian ? J_DAY_LEN : DAY_LEN;
memset(p, ' ', len);
return p+len;
}
if (day & TODAY_FLAG) {
day &= ~TODAY_FLAG;
p += sprintf(p, "%s", Senter);
highlight = 1;
}
if (julian) {
if ((val = day / 100)) {
day %= 100;
*p++ = val + '0';
display = 1;
} else {
*p++ = ' ';
display = 0;
}
val = day / 10;
if (val || display)
*p++ = val + '0';
else
*p++ = ' ';
*p++ = day % 10 + '0';
} else {
*p++ = aday[day][0];
*p++ = aday[day][1];
}
if (highlight)
p += sprintf(p, "%s", Sexit);
*p++ = ' ';
return p;
}
void
trim_trailing_spaces(char *s)
{
char *p;
for (p = s; *p; ++p)
continue;
while (p > s && isspace(*--p))
continue;
if (p > s)
++p;
*p = '\0';
}
/*
* 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.
*/
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);
}
void
center(const char *str, size_t len, int separate)
{
char lineout[FMT_ST_CHARS];
center_str(str, lineout, ARRAY_SIZE(lineout), len);
fputs(lineout, stdout);
if (separate)
printf("%*s", separate, "");
}
static void __attribute__ ((__noreturn__)) usage(FILE * out)
{
fputs(_("\nUsage:\n"), out);
fprintf(out,
_(" %s [options] [[[day] month] year]\n"),
program_invocation_short_name);
fputs(_("\nOptions:\n"), out);
fputs(_(" -1, --one show only current month (default)\n"
" -3, --three show previous, current and next month\n"
" -s, --sunday Sunday as first day of week\n"
" -m, --monday Monday as first day of week\n"
" -j, --julian output Julian dates\n"
" -y, --year show whole current year\n"
" -V, --version display version information and exit\n"
" -h, --help display this help text and exit\n\n"), out);
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
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