/* 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>
+ * 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
* - added Native Language Support
*
* 2000-09-01 Michael Charles Pruznick <dummy@netwiz.net>
#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 "errs.h"
-#include "nls.h"
-
-#if defined(HAVE_NCURSES)
-
-#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> */
+#include <errno.h>
-static void
-my_setupterm(const char *term, int fildes, int *errret) {
- setupterm((char*)term, fildes, errret);
+#include "c.h"
+#include "closestream.h"
+#include "colors.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>
+
+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 void my_putstring(char *s)
+{
+ putp(s);
}
-static const char *
-my_tgetstr(char *s, char *ss) {
- const char* ret = tigetstr(ss);
- if (!ret || ret==(char*)-1)
- return "";
- else
- return ret;
+static const char *my_tgetstr(char *s __attribute__((__unused__)), char *ss)
+{
+ const char *ret = tigetstr(ss);
+ if (!ret || ret == (char *)-1)
+ return "";
+
+ return ret;
}
#elif defined(HAVE_LIBTERMCAP)
+# include <termcap.h>
-#include <termcap.h>
-
-char termbuffer[4096];
-char tcbuffer[4096];
-char *strbuf = termbuffer;
+static char termbuffer[4096];
+static char tcbuffer[4096];
+static 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 void my_setupterm(const char *term, int fildes __attribute__((__unused__)), int *errret)
+{
+ *errret = tgetent(tcbuffer, term);
}
-static const char *
-my_tgetstr(char *s, char *ss) {
- const char* ret = tgetstr(s, &strbuf);
- if (!ret)
- return "";
- else
- return ret;
+static void my_putstring(char *s)
+{
+ tputs(s, 1, putchar);
}
-#else /* ! (HAVE_LIBTERMCAP || HAVE_NCURSES) */
+static const char *my_tgetstr(char *s, char *ss __attribute__((__unused__)))
+{
+ const char *ret = tgetstr(s, &strbuf);
+ if (!ret)
+ return "";
-static void
-my_putstring(char *s) {
- fputs(s, stdout);
+ return ret;
}
-#endif
+#else /* ! (HAVE_LIBTERMCAP || HAVE_LIBNCURSES || HAVE_LIBNCURSESW) */
+static void my_putstring(char *s)
+{
+ fputs(s, stdout);
+}
-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 */
+#endif /* end of LIBTERMCAP / NCURSES */
-#ifdef HAVE_LANGINFO_H
-# include <langinfo.h>
-#else
-# include <localeinfo.h> /* libc4 only */
+#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
+static const char *term="";
#endif
-#include "widechar.h"
+static const char *Senter="", *Sexit="";/* enter and exit standout mode */
-#define SIZE(a) (sizeof(a)/sizeof((a)[0]))
+#include "widechar.h"
/* allow compile-time define to over-ride default */
#ifndef NUM_MONTHS
-#define NUM_MONTHS 1
+# define NUM_MONTHS 1
#endif
#if ( NUM_MONTHS != 1 && NUM_MONTHS !=3 )
-#error NUM_MONTHS must be 1 or 3
+# error NUM_MONTHS must be 1 or 3
#endif
-#define THURSDAY 4 /* for reformation */
-#define SATURDAY 6 /* 1 Jan 1 was a Saturday */
+enum {
+ SUNDAY = 0,
+ MONDAY,
+ TUESDAY,
+ WEDNESDAY,
+ THURSDAY,
+ FRIDAY,
+ SATURDAY,
+ DAYS_IN_WEEK,
+ NONEDAY
+};
+#define FIRST_WEEKDAY SATURDAY /* Jan 1st, 1 was a Saturday */
+#define REFORMATION_YEAR 1752 /* Signed-off-by: Lord Chesterfield */
+#define REFORMATION_MONTH 9 /* September */
#define FIRST_MISSING_DAY 639799 /* 3 Sep 1752 */
#define NUMBER_MISSING_DAYS 11 /* 11 day correction */
+#define YDAY_AFTER_MISSING 258 /* 14th in Sep 1752 */
-#define MAXDAYS 43 /* max slots in a month array */
+#define DAYS_IN_YEAR 365 /* the common case, leap years are calculated */
+#define MONTHS_IN_YEAR 12
+#define DAYS_IN_MONTH 31
+#define MAXDAYS 42 /* slots in a month array */
#define SPACE -1 /* used in day array */
-static int days_in_month[2][13] = {
+#define SMALLEST_YEAR 1
+
+#define DAY_LEN 3 /* 3 spaces per day */
+#define WEEK_LEN (DAYS_IN_WEEK * DAY_LEN)
+#define HEAD_SEP 2
+#define MONTH_COLS 3 /* month columns in year view */
+#define WNUM_LEN 3
+
+#define TODAY_FLAG 0x400 /* flag day for highlighting */
+
+#define FMT_ST_CHARS 300 /* 90 suffices in most locales */
+
+static const 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},
};
-int sep1752[MAXDAYS] = {
- 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
-}, j_sep1752[MAXDAYS] = {
- 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
-}, 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,
- SPACE
+enum {
+ WEEK_NUM_DISABLED = 0,
+ WEEK_NUM_MASK=0xff,
+ WEEK_NUM_ISO=0x100,
+ WEEK_NUM_US=0x200,
};
-#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];
-/* week1stday = 1 => " M Tu W Th F S S " */
-char j_day_headings[J_WEEK_LEN*6+1];
-/* week1stday = 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)
+static char day_headings[(WEEK_LEN + 1) * 6 + 1];
-/* 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 (default), 1 => monday */
-int week1stday=0;
-int julian;
+struct cal_request {
+ int day;
+ int month;
+ int32_t year;
+ int week;
+};
-#define TODAY_FLAG 0x400 /* flag day for highlighting */
+struct cal_control {
+ const char *full_month[MONTHS_IN_YEAR]; /* month names */
+ int colormode; /* day and week number highlight */
+ int num_months; /* number of months horizontally in print out */
+ int weekstart; /* day the week starts, often Sun or Mon */
+ int weektype; /* WEEK_TYPE_{NONE,ISO,US} */
+ size_t day_width; /* day width in characters in printout */
+ size_t week_width; /* 7 * day_width + possible week num */
+ int gutter_width; /* spaces in between horizontal month outputs */
+ struct cal_request req; /* the times user is interested */
+ unsigned int julian:1, /* julian output */
+ yflag:1, /* print whole year */
+ header_hint:1; /* does month name + year need two lines to fit */
+};
-#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];
+struct cal_month {
+ int days[MAXDAYS]; /* the day numbers, or SPACE */
+ int weeks[MAXDAYS / DAYS_IN_WEEK];
+ int month;
+ int32_t year;
+ struct cal_month *next;
};
-char * ascii_day(char *, int);
-void center_str(const char* src, char* dest, size_t dest_size, int width);
-void center(const char *, int, 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 *);
-void usage(void);
-void headers_init(void);
-extern char *__progname;
-
-int
-main(int argc, char **argv) {
+/* function prototypes */
+static int leap_year(int32_t year);
+static void headers_init(struct cal_control *ctl);
+static void set_consecutive_months(struct cal_month *month, int m, int32_t y);
+static void cal_fill_month(struct cal_month *month, const struct cal_control *ctl);
+static void cal_output_header(struct cal_month *month, const struct cal_control *ctl);
+static void cal_output_months(struct cal_month *month, const struct cal_control *ctl);
+static void monthly(const struct cal_control *ctl);
+static void monthly3(const struct cal_control *ctl);
+static void yearly(const struct cal_control *ctl);
+static int day_in_year(int day, int month, int32_t year);
+static int day_in_week(int day, int month, int32_t year);
+static int week_number(int day, int month, int32_t year, const struct cal_control *ctl);
+static int week_to_day(const struct cal_control *ctl);
+static int center_str(const char *src, char *dest, size_t dest_size, size_t width);
+static void center(const char *str, size_t len, int separate);
+static void __attribute__((__noreturn__)) usage(FILE *out);
+
+int main(int argc, char **argv)
+{
struct tm *local_time;
time_t now;
- int ch, day, month, year, yflag;
- char *progname, *p;
- int num_months = NUM_MONTHS;
+ int ch;
+ static struct cal_control ctl = {
+ .weekstart = SUNDAY,
+ .num_months = NUM_MONTHS,
+ .colormode = UL_COLORMODE_UNDEF,
+ .weektype = WEEK_NUM_DISABLED,
+ .day_width = DAY_LEN,
+ .gutter_width = 2,
+ .req.day = 0,
+ .req.month = 0
+ };
+
+ enum {
+ OPT_COLOR = CHAR_MAX + 1
+ };
- progname = argv[0];
- if ((p = strrchr(progname, '/')) != NULL)
- progname = p+1;
- __progname = progname;
+ 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'},
+ {"week", optional_argument, NULL, 'w'},
+ {"color", optional_argument, NULL, OPT_COLOR},
+ {"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_NCURSES) || defined(HAVE_LIBTERMCAP)
+#if defined(HAVE_LIBNCURSES) || defined(HAVE_LIBNCURSESW) || defined(HAVE_LIBTERMCAP)
if ((term = getenv("TERM"))) {
int ret;
- my_setupterm(term, 1, &ret);
+ my_setupterm(term, STDOUT_FILENO, &ret);
if (ret > 0) {
Senter = my_tgetstr("so","smso");
Sexit = my_tgetstr("se","rmso");
- Slen = strlen(Senter) + strlen(Sexit);
}
}
#endif
-#if 0 /* setting week1stday is against man page */
/*
- * What *is* the first day of the week? Note that glibc does not
- * provide any information today, it (almost) always answers Monday.
- * Sunday is the Jewish and Christian tradition.
- * Sometimes an answer is built into the language:
- * German calls Wednesday "Mittwoch", so starts at Sunday.
- * Portuguese calls Monday "segunda-feira", so starts at Sunday.
- * Russian calls Friday "pyatnitsa", so starts at Monday.
- * ISO 8601 decided to start at Monday.
- *
- * The traditional Unix cal utility starts at Sunday.
- * We start at Sunday and have an option -m for starting at Monday.
- *
- * At some future time this may become -s for Sunday, -m for Monday,
- * no option for glibc-determined locale-dependent version.
+ * 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.
*/
-#ifdef HAVE_LANGINFO_H
- week1stday = (int)(nl_langinfo(_NL_TIME_FIRST_WEEKDAY))[0];
-#endif
+#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));
+ ctl.weekstart = (wfd + *nl_langinfo(_NL_TIME_FIRST_WEEKDAY) - 1) % DAYS_IN_WEEK;
+ }
#endif
- yflag = 0;
- while ((ch = getopt(argc, argv, "13mjsyV")) != -1)
+ while ((ch = getopt_long(argc, argv, "13mjsywVh", longopts, NULL)) != -1)
switch(ch) {
case '1':
- num_months = 1; /* default */
+ ctl.num_months = 1; /* default */
break;
case '3':
- num_months = 3;
+ ctl.num_months = 3;
break;
case 's':
- week1stday = 0; /* default */
+ ctl.weekstart = SUNDAY; /* default */
break;
case 'm':
- week1stday = 1;
+ ctl.weekstart = MONDAY;
break;
case 'j':
- julian = 1;
+ ctl.julian = 1;
+ ctl.day_width = DAY_LEN + 1;
break;
case 'y':
- yflag = 1;
+ ctl.yflag = 1;
+ break;
+ case 'w':
+ if (optarg) {
+ ctl.req.week = strtos32_or_err(optarg,
+ _("invalid week argument"));
+ if (ctl.req.week < 1 || 53 < ctl.req.week)
+ errx(EXIT_FAILURE,_("illegal week value: use 1-53"));
+ }
+ ctl.weektype = WEEK_NUM_US; /* default per weekstart */
+ break;
+ case OPT_COLOR:
+ if (optarg)
+ ctl.colormode = colormode_or_err(optarg,
+ _("unsupported color mode"));
break;
case 'V':
- printf(_("%s from %s\n"),
- progname, PACKAGE_STRING);
- return 0;
+ printf(UTIL_LINUX_VERSION);
+ return EXIT_SUCCESS;
+ case 'h':
+ usage(stdout);
case '?':
default:
- usage();
+ usage(stderr);
}
argc -= optind;
argv += optind;
- day = month = year = 0;
+ if (ctl.weektype) {
+ ctl.weektype = ctl.req.week & WEEK_NUM_MASK;
+ ctl.weektype |= (ctl.weekstart == MONDAY ? WEEK_NUM_ISO : WEEK_NUM_US);
+ ctl.week_width = (ctl.day_width * DAYS_IN_WEEK) + WNUM_LEN;
+ } else
+ ctl.week_width = ctl.day_width * DAYS_IN_WEEK;
+
+ time(&now);
+ local_time = localtime(&now);
+
switch(argc) {
+ case 3:
+ ctl.req.day = strtos32_or_err(*argv++, _("illegal day value"));
+ if (ctl.req.day < 1 || DAYS_IN_MONTH < ctl.req.day)
+ errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), DAYS_IN_MONTH);
+ /* FALLTHROUGH */
case 2:
- if ((month = atoi(*argv++)) < 1 || month > 12)
- errx(1, _("illegal month value: use 1-12"));
+ ctl.req.month = strtos32_or_err(*argv++, _("illegal month value: use 1-12"));
+ if (ctl.req.month < 1 || MONTHS_IN_YEAR < ctl.req.month)
+ errx(EXIT_FAILURE, _("illegal month value: use 1-12"));
/* FALLTHROUGH */
case 1:
- if ((year = atoi(*argv)) < 1 || year > 9999)
- errx(1, _("illegal year value: use 1-9999"));
+ ctl.req.year = strtos32_or_err(*argv++, _("illegal year value"));
+ if (ctl.req.year < SMALLEST_YEAR)
+ errx(EXIT_FAILURE, _("illegal year value: use positive integer"));
+ if (ctl.req.year == INT32_MAX)
+ errx(EXIT_FAILURE, _("illegal year value"));
+ if (ctl.req.day) {
+ int dm = days_in_month[leap_year(ctl.req.year)][ctl.req.month];
+ if (ctl.req.day > dm)
+ errx(EXIT_FAILURE, _("illegal day value: use 1-%d"), dm);
+ ctl.req.day = day_in_year(ctl.req.day, ctl.req.month, ctl.req.year);
+ } else if ((int32_t) (local_time->tm_year + 1900) == ctl.req.year) {
+ ctl.req.day = local_time->tm_yday + 1;
+ }
+ if (!ctl.req.month && !ctl.req.week) {
+ ctl.req.month = local_time->tm_mon + 1;
+ ctl.yflag = 1;
+ }
break;
case 0:
- {
-#ifdef TEST_CAL
- char *e = getenv("TEST_TIME");
-
- if (e && isdigit((unsigned char) *e))
- now = atol(e);
- else
-#endif
- time(&now);
- }
- local_time = localtime(&now);
- if (isatty(1))
- day = local_time->tm_yday + 1;
- year = local_time->tm_year + 1900;
- if (!yflag)
- month = local_time->tm_mon + 1;
+ ctl.req.day = local_time->tm_yday + 1;
+ ctl.req.year = local_time->tm_year + 1900;
+ ctl.req.month = local_time->tm_mon + 1;
break;
default:
- usage();
+ usage(stderr);
}
- headers_init();
-
- if (month && num_months == 1)
- monthly(day, month, year);
- else if (month && num_months == 3)
- monthly3(day, month, year);
- else if (julian)
- j_yearly(day, year);
- else
- yearly(day, year);
- exit(0);
-}
-#ifndef HAVE_WIDECHAR
-static char *eos(char *s) {
- while (s && *s)
- s++;
- return s;
+ if (0 < ctl.req.week) {
+ int yday = week_to_day(&ctl);
+ int leap = leap_year(ctl.req.year);
+ int m = 1;
+
+ if (yday < 1)
+ errx(EXIT_FAILURE, _("illegal week value: year %d "
+ "doesn't have week %d"),
+ ctl.req.year, ctl.req.week);
+ while (m <= 12 && yday > days_in_month[leap][m])
+ yday -= days_in_month[leap][m++];
+ if (m > 12) {
+ /* In some years (e.g. 2010 in ISO mode) it's possible
+ * 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. */
+ if (ctl.req.week != week_number(31, 12, ctl.req.year - 1, &ctl))
+ errx(EXIT_FAILURE,
+ _("illegal week value: year %d "
+ "doesn't have week %d"),
+ ctl.req.year, ctl.req.week);
+ }
+ if (!ctl.req.month)
+ ctl.req.month = 12 < m ? 1 : m;
+ }
+
+ headers_init(&ctl);
+
+ 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;
}
-#endif
-void headers_init(void)
+/* leap year -- account for gregorian reformation in 1752 */
+static int leap_year(int32_t year)
{
- int i, wd;
-#ifdef HAVE_WIDECHAR
- wchar_t day_headings_wc[22],j_day_headings_wc[29];
- char *cur_dh = day_headings, *cur_j_dh = j_day_headings;
+ if (year <= REFORMATION_YEAR)
+ return !(year % 4);
+ else
+ return ( !(year % 4) && (year % 100) ) || !(year % 400);
+}
- wcscpy(day_headings_wc, L"");
- wcscpy(j_day_headings_wc, L"");
-#endif
+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;
- strcpy(day_headings,"");
- strcpy(j_day_headings,"");
+ year_len = snprintf(tmp, sizeof(tmp), "%d", ctl->req.year);
-#ifdef HAVE_LANGINFO_H
-# define weekday(wd) nl_langinfo(ABDAY_1+wd)
-#else
-# define weekday(wd) _time_info->abbrev_wkday[wd]
-#endif
+ for (i = 0; i < DAYS_IN_WEEK; i++) {
+ size_t space_left;
+ wd = (i + ctl->weekstart) % DAYS_IN_WEEK;
- for(i = 0 ; i < 7 ; i++ ) {
- ssize_t space_left;
- wd = (i + week1stday) % 7;
-#ifdef HAVE_WIDECHAR
- swprintf(day_headings_wc, SIZE(day_headings_wc), L"%1.2s ", weekday(wd));
- swprintf(j_day_headings_wc, SIZE(j_day_headings_wc), L"%3.3s ", weekday(wd));
-
- space_left = sizeof(day_headings) - (cur_dh - day_headings);
- if(space_left <= 0)
- break;
- cur_dh += wcstombs(cur_dh, day_headings_wc, space_left);
-
- space_left = sizeof(j_day_headings)-(cur_j_dh-j_day_headings);
- if(space_left <= 0)
- break;
- cur_j_dh += wcstombs(cur_j_dh,j_day_headings_wc, space_left);
-#else
- sprintf(eos(day_headings), "%2.2s ", weekday(wd));
- sprintf(eos(j_day_headings), "%3.3s ", weekday(wd));
-#endif
- }
+ if (i)
+ strcat(cur_dh++, " ");
+ space_left = sizeof(day_headings) - (cur_dh - day_headings);
- trim_trailing_spaces(day_headings);
- trim_trailing_spaces(j_day_headings);
-#undef weekday
+ 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 < 12; i++) {
-#ifdef HAVE_LANGINFO_H
- full_month[i] = nl_langinfo(MON_1+i);
-#else
- full_month[i] = _time_info->full_month[i];
-#endif
- }
+ 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;
+ }
}
-void
-do_monthly(int day, int month, int year, struct fmt_st *out) {
- int col, row, len, 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.
- */
- len = sprintf(lineout, _("%s %d"), full_month[month - 1], year);
- center_str(lineout, out->s[0], SIZE(out->s[0]), width);
-
- sprintf(out->s[1],"%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);
+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++;
}
- *p = '\0';
- trim_trailing_spaces(lineout);
- sprintf(out->s[row+2], "%s", lineout);
- if (has_hl)
- Hrow = out->s[row+2];
}
}
-void
-monthly(int day, int month, int year) {
- int i;
- struct fmt_st out;
+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;
- do_monthly(day, month, year, &out);
- for (i = 0; i < FMT_ST_LINES; i++) {
- my_putstring(out.s[i]);
- putchar('\n');
+ 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;
}
-}
-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;
+ /* 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++;
}
- 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_NCURSES) || 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, SIZE(lineout), "%-*s %-*s %-*s\n",
- w1, out_prev.s[i],
- w2, out_curm.s[i],
- w3, out_next.s[i]);
-
- my_putstring(lineout);
+ /* 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);
+ }
}
}
-void
-j_yearly(int day, int year) {
- int col, *dp, i, month, row, which_cal;
- int days[12][MAXDAYS];
- char *p, lineout[80];
-
- sprintf(lineout, "%d", year);
- center(lineout, J_WEEK_LEN * 2 + J_HEAD_SEP, 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, J_HEAD_SEP);
- center(full_month[month + 1], J_WEEK_LEN, 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, " ");
+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) {
+ my_putstring("\n");
+ 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);
}
- *p = '\0';
- trim_trailing_spaces(lineout);
- my_putstring(lineout);
- putchar('\n');
+ }
+ } 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);
+ }
+ }
+ my_putstring("\n");
+ for (i = month; i; i = i->next) {
+ if (ctl->weektype) {
+ if (ctl->julian)
+ sprintf(out, "%*s%s", (int)ctl->day_width - 1, "", day_headings);
+ else
+ sprintf(out, "%*s%s", (int)ctl->day_width, "", day_headings);
+ my_putstring(out);
+ } else
+ my_putstring(day_headings);
+ if (i->next != NULL) {
+ sprintf(out, "%*s", ctl->gutter_width, "");
+ my_putstring(out);
}
}
- printf("\n");
+ my_putstring("\n");
}
-void
-yearly(int day, int year) {
- int col, *dp, i, month, row, which_cal;
- int days[12][MAXDAYS];
- char *p, lineout[100];
-
- sprintf(lineout, "%d", year);
- center(lineout, WEEK_LEN * 3 + HEAD_SEP * 2, 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, HEAD_SEP);
- center(full_month[month + 1], WEEK_LEN, HEAD_SEP);
- center(full_month[month + 2], WEEK_LEN, 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, " ");
+static void cal_output_months(struct cal_month *month, const struct cal_control *ctl)
+{
+ char out[FMT_ST_CHARS];
+ 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])
+ sprintf(out, "%s%2d%s", Senter, i->weeks[week_line],
+ Sexit);
+ else
+ sprintf(out, "%2d", i->weeks[week_line]);
+ } else
+ sprintf(out, "%2s", "");
+ my_putstring(out);
+ 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])
+ sprintf(out, "%*s%s%*d%s", skip - (ctl->julian ? 3 : 2),
+ "", Senter, (ctl->julian ? 3 : 2),
+ i->days[d], Sexit);
+ else
+ sprintf(out, "%*d", skip, i->days[d]);
+ } else
+ sprintf(out, "%*s", skip, "");
+ my_putstring(out);
+ if (skip < (int)ctl->day_width)
+ skip++;
}
- *p = '\0';
- trim_trailing_spaces(lineout);
- my_putstring(lineout);
- putchar('\n');
+ if (i->next != NULL) {
+ sprintf(out, "%*s", ctl->gutter_width, "");
+ my_putstring(out);
+ }
+ }
+ if (i == NULL) {
+ sprintf(out, "%*s\n", ctl->gutter_width - (ctl->yflag ? 0 : 1), "");
+ my_putstring(out);
}
}
- 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) {
- d_sep1752 = julian ? j_sep1752 : sep1752;
- memcpy(days, d_sep1752 + week1stday, MAXDAYS * sizeof(int));
- return;
+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;
}
- memcpy(days, empty, MAXDAYS * sizeof(int));
- dm = days_in_month[leap_year(year)][month];
- dw = (day_in_week(1, month, year) - week1stday + 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++;
+
+ 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);
+ my_putstring("\n\n");
+
+ 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? */
+ my_putstring("\n");
}
/*
* day_in_year --
* return the 1 based day number within the year
*/
-int
-day_in_year(int day, int month, int year) {
+static int day_in_year(int day, int month, int32_t year)
+{
int i, leap;
leap = leap_year(year);
* 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.
+ * 3 Sep. 1752 through 13 Sep. 1752, and returns invalid weekday
+ * during the period of 11 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);
+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;
}
-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",
- };
+/*
+ * 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 (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, 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 (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;
}
- if (highlight)
- p += sprintf(p, Sexit);
- *p++ = ' ';
- return p;
-}
-void
-trim_trailing_spaces(s)
- char *s;
-{
- char *p;
-
- for (p = s; *p; ++p)
- continue;
- while (p > s && isspace(*--p))
- continue;
- if (p > s)
- ++p;
- *p = '\0';
+ /* 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;
}
/*
- * Center string, handling multibyte characters appropriately.
- * In addition if the string is too large for the width it's truncated.
+ * 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.
*/
-void
-center_str(const char* src, char* dest, size_t dest_size, int width)
+static int week_to_day(const struct cal_control *ctl)
{
-#ifdef HAVE_WIDECHAR
- wchar_t str_wc[FMT_ST_CHARS];
-#endif
- char str[FMT_ST_CHARS];
- const char* str_to_print=src;
- int len, spaces, wide_char_enabled=0;
+ int yday, wday;
- len = strlen(src);
+ wday = day_in_week(1, 1, ctl->req.year);
+ yday = ctl->req.week * 7 - wday;
-#ifdef HAVE_WIDECHAR
- if (mbstowcs(str_wc, src, FMT_ST_CHARS) > 0) {
- wide_char_enabled = 1;
- len = wcswidth(str_wc, SIZE(str_wc));
- }
-#endif
- if (len > width) {
- str_to_print=str;
- if (wide_char_enabled) {
-#ifdef HAVE_WIDECHAR
- str_wc[width]=L'\0';
- wcstombs(str, str_wc, SIZE(str));
-#endif
- } else {
- strncpy(str, src, SIZE(str));
- str[width]='\0';
- }
- }
+ 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;
- spaces = width - len;
- spaces = ( spaces < 0 ? 0 : spaces );
+ return yday;
+}
- snprintf(dest, dest_size, "%*s%s%*s",
- spaces / 2, "",
- str_to_print,
- spaces / 2 + spaces % 2, "" );
+/*
+ * 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);
}
-void
-center(str, len, separate)
- const char *str;
- int len;
- int separate;
+static void center(const char *str, size_t len, int separate)
{
char lineout[FMT_ST_CHARS];
- center_str(str, lineout, SIZE(lineout), len);
- fputs(lineout, stdout);
- if (separate)
- (void)printf("%*s", separate, "");
+
+ center_str(str, lineout, ARRAY_SIZE(lineout), len);
+ my_putstring(lineout);
+
+ if (separate) {
+ snprintf(lineout, sizeof(lineout), "%*s", separate, "");
+ my_putstring(lineout);
+ }
}
-void
-usage()
+static void __attribute__ ((__noreturn__)) usage(FILE * out)
{
-
- (void)fprintf(stderr, _("usage: cal [-13smjyV] [[month] year]\n"));
- exit(1);
+ 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);
}
projects / thirdparty / util-linux.git / blobdiff