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Diffstat (limited to 'misc-utils/cal.c')
| -rw-r--r-- | misc-utils/cal.c | 800 |
1 files changed, 800 insertions, 0 deletions
diff --git a/misc-utils/cal.c b/misc-utils/cal.c new file mode 100644 index 0000000..60e85df --- /dev/null +++ b/misc-utils/cal.c @@ -0,0 +1,800 @@ +/* + * 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); +} |