mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-05 03:39:02 +00:00
480 lines
11 KiB
C
480 lines
11 KiB
C
/*
|
|
* Copyright (c) 1989, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
|
|
#include <ctype.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <time.h>
|
|
#include <sys/uio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <err.h>
|
|
|
|
#include "pathnames.h"
|
|
#include "calendar.h"
|
|
|
|
struct tm *tp;
|
|
int *cumdays, offset, yrdays;
|
|
char dayname[10];
|
|
|
|
|
|
/* 1-based month, 0-based days, cumulative */
|
|
int daytab[][14] = {
|
|
{ 0, -1, 30, 58, 89, 119, 150, 180, 211, 242, 272, 303, 333, 364 },
|
|
{ 0, -1, 30, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
|
|
};
|
|
|
|
static char *days[] = {
|
|
"sun", "mon", "tue", "wed", "thu", "fri", "sat", NULL,
|
|
};
|
|
|
|
static char *months[] = {
|
|
"jan", "feb", "mar", "apr", "may", "jun",
|
|
"jul", "aug", "sep", "oct", "nov", "dec", NULL,
|
|
};
|
|
|
|
static struct fixs fndays[8]; /* full national days names */
|
|
static struct fixs ndays[8]; /* short national days names */
|
|
|
|
static struct fixs fnmonths[13]; /* full national months names */
|
|
static struct fixs nmonths[13]; /* short national month names */
|
|
|
|
|
|
void setnnames(void)
|
|
{
|
|
char buf[80];
|
|
int i, l;
|
|
struct tm tm;
|
|
|
|
for (i = 0; i < 7; i++) {
|
|
tm.tm_wday = i;
|
|
strftime(buf, sizeof(buf), "%a", &tm);
|
|
for (l = strlen(buf);
|
|
l > 0 && isspace((unsigned char)buf[l - 1]);
|
|
l--)
|
|
;
|
|
buf[l] = '\0';
|
|
if (ndays[i].name != NULL)
|
|
free(ndays[i].name);
|
|
if ((ndays[i].name = strdup(buf)) == NULL)
|
|
errx(1, "cannot allocate memory");
|
|
ndays[i].len = strlen(buf);
|
|
|
|
strftime(buf, sizeof(buf), "%A", &tm);
|
|
for (l = strlen(buf);
|
|
l > 0 && isspace((unsigned char)buf[l - 1]);
|
|
l--)
|
|
;
|
|
buf[l] = '\0';
|
|
if (fndays[i].name != NULL)
|
|
free(fndays[i].name);
|
|
if ((fndays[i].name = strdup(buf)) == NULL)
|
|
errx(1, "cannot allocate memory");
|
|
fndays[i].len = strlen(buf);
|
|
}
|
|
|
|
for (i = 0; i < 12; i++) {
|
|
tm.tm_mon = i;
|
|
strftime(buf, sizeof(buf), "%b", &tm);
|
|
for (l = strlen(buf);
|
|
l > 0 && isspace((unsigned char)buf[l - 1]);
|
|
l--)
|
|
;
|
|
buf[l] = '\0';
|
|
if (nmonths[i].name != NULL)
|
|
free(nmonths[i].name);
|
|
if ((nmonths[i].name = strdup(buf)) == NULL)
|
|
errx(1, "cannot allocate memory");
|
|
nmonths[i].len = strlen(buf);
|
|
|
|
strftime(buf, sizeof(buf), "%B", &tm);
|
|
for (l = strlen(buf);
|
|
l > 0 && isspace((unsigned char)buf[l - 1]);
|
|
l--)
|
|
;
|
|
buf[l] = '\0';
|
|
if (fnmonths[i].name != NULL)
|
|
free(fnmonths[i].name);
|
|
if ((fnmonths[i].name = strdup(buf)) == NULL)
|
|
errx(1, "cannot allocate memory");
|
|
fnmonths[i].len = strlen(buf);
|
|
}
|
|
}
|
|
|
|
void
|
|
settime(now)
|
|
time_t now;
|
|
{
|
|
char *oldl;
|
|
|
|
tp = localtime(&now);
|
|
if ( isleap(tp->tm_year + 1900) ) {
|
|
yrdays = 366;
|
|
cumdays = daytab[1];
|
|
} else {
|
|
yrdays = 365;
|
|
cumdays = daytab[0];
|
|
}
|
|
/* Friday displays Monday's events */
|
|
offset = tp->tm_wday == 5 ? 3 : 1;
|
|
header[5].iov_base = dayname;
|
|
|
|
oldl = setlocale(LC_TIME, NULL);
|
|
(void) setlocale(LC_TIME, "C");
|
|
header[5].iov_len = strftime(dayname, sizeof(dayname), "%A", tp);
|
|
(void) setlocale(LC_TIME, oldl);
|
|
|
|
setnnames();
|
|
}
|
|
|
|
/* convert Day[/Month][/Year] into unix time (since 1970)
|
|
* Day: two digits, Month: two digits, Year: digits
|
|
*/
|
|
time_t Mktime (dp)
|
|
char *dp;
|
|
{
|
|
time_t t;
|
|
int d, m, y;
|
|
struct tm tm;
|
|
|
|
(void)time(&t);
|
|
tp = localtime(&t);
|
|
|
|
tm.tm_sec = 0;
|
|
tm.tm_min = 0;
|
|
tm.tm_hour = 0;
|
|
tm.tm_wday = 0;
|
|
tm.tm_mday = tp->tm_mday;
|
|
tm.tm_mon = tp->tm_mon;
|
|
tm.tm_year = tp->tm_year;
|
|
|
|
switch (sscanf(dp, "%d.%d.%d", &d, &m, &y)) {
|
|
case 3:
|
|
if (y > 1900)
|
|
y -= 1900;
|
|
tm.tm_year = y;
|
|
/* FALLTHROUGH */
|
|
case 2:
|
|
tm.tm_mon = m - 1;
|
|
/* FALLTHROUGH */
|
|
case 1:
|
|
tm.tm_mday = d;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "Mktime: %d %d %d %s\n", (int)mktime(&tm), (int)t, len,
|
|
asctime(&tm));
|
|
#endif
|
|
return(mktime(&tm));
|
|
}
|
|
|
|
/*
|
|
* Possible date formats include any combination of:
|
|
* 3-charmonth (January, Jan, Jan)
|
|
* 3-charweekday (Friday, Monday, mon.)
|
|
* numeric month or day (1, 2, 04)
|
|
*
|
|
* Any character may separate them, or they may not be separated. Any line,
|
|
* following a line that is matched, that starts with "whitespace", is shown
|
|
* along with the matched line.
|
|
*/
|
|
int
|
|
isnow(endp, monthp, dayp, varp)
|
|
char *endp;
|
|
int *monthp;
|
|
int *dayp;
|
|
int *varp;
|
|
{
|
|
int day, flags, month = 0, v1, v2;
|
|
|
|
/*
|
|
* CONVENTION
|
|
*
|
|
* Month: 1-12
|
|
* Monthname: Jan .. Dec
|
|
* Day: 1-31
|
|
* Weekday: Mon-Sun
|
|
*
|
|
*/
|
|
|
|
flags = 0;
|
|
|
|
/* read first field */
|
|
/* didn't recognize anything, skip it */
|
|
if (!(v1 = getfield(endp, &endp, &flags)))
|
|
return (0);
|
|
|
|
/* Easter or Easter depending days */
|
|
if (flags & F_EASTER)
|
|
day = v1 - 1; /* days since January 1 [0-365] */
|
|
|
|
/*
|
|
* 1. {Weekday,Day} XYZ ...
|
|
*
|
|
* where Day is > 12
|
|
*/
|
|
else if (flags & F_ISDAY || v1 > 12) {
|
|
|
|
/* found a day; day: 1-31 or weekday: 1-7 */
|
|
day = v1;
|
|
|
|
/* {Day,Weekday} {Month,Monthname} ... */
|
|
/* if no recognizable month, assume just a day alone
|
|
* in other words, find month or use current month */
|
|
if (!(month = getfield(endp, &endp, &flags)))
|
|
month = tp->tm_mon + 1;
|
|
}
|
|
|
|
/* 2. {Monthname} XYZ ... */
|
|
else if (flags & F_ISMONTH) {
|
|
month = v1;
|
|
|
|
/* Monthname {day,weekday} */
|
|
/* if no recognizable day, assume the first day in month */
|
|
if (!(day = getfield(endp, &endp, &flags)))
|
|
day = 1;
|
|
}
|
|
|
|
/* Hm ... */
|
|
else {
|
|
v2 = getfield(endp, &endp, &flags);
|
|
|
|
/*
|
|
* {Day} {Monthname} ...
|
|
* where Day <= 12
|
|
*/
|
|
if (flags & F_ISMONTH) {
|
|
day = v1;
|
|
month = v2;
|
|
*varp = 0;
|
|
}
|
|
|
|
/* {Month} {Weekday,Day} ... */
|
|
else {
|
|
/* F_ISDAY set, v2 > 12, or no way to tell */
|
|
month = v1;
|
|
/* if no recognizable day, assume the first */
|
|
day = v2 ? v2 : 1;
|
|
*varp = 0;
|
|
}
|
|
}
|
|
|
|
/* convert Weekday into *next* Day,
|
|
* e.g.: 'Sunday' -> 22
|
|
* 'SundayLast' -> ??
|
|
*/
|
|
if (flags & F_ISDAY) {
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "\nday: %d %s month %d\n", day, endp, month);
|
|
#endif
|
|
|
|
*varp = 1;
|
|
/* variable weekday, SundayLast, MondayFirst ... */
|
|
if (day < 0 || day >= 10) {
|
|
|
|
/* negative offset; last, -4 .. -1 */
|
|
if (day < 0) {
|
|
v1 = day/10 - 1; /* offset -4 ... -1 */
|
|
day = 10 + (day % 10); /* day 1 ... 7 */
|
|
|
|
/* day, eg '22nd' */
|
|
v2 = tp->tm_mday + (((day - 1) - tp->tm_wday + 7) % 7);
|
|
|
|
/* (month length - day) / 7 + 1 */
|
|
if (cumdays[month+1] - cumdays[month] >= v2
|
|
&& ((int)((cumdays[month+1] -
|
|
cumdays[month] - v2) / 7) + 1) == -v1)
|
|
/* bingo ! */
|
|
day = v2;
|
|
|
|
/* set to yesterday */
|
|
else {
|
|
day = tp->tm_mday - 1;
|
|
if (day == 0)
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
/* first, second ... +1 ... +5 */
|
|
else {
|
|
v1 = day/10; /* offset: +1 (first Sunday) ... */
|
|
day = day % 10;
|
|
|
|
/* day, eg '22th' */
|
|
v2 = tp->tm_mday + (((day - 1) - tp->tm_wday + 7) % 7);
|
|
|
|
/* Hurrah! matched */
|
|
if ( ((v2 - 1 + 7) / 7) == v1 )
|
|
day = v2;
|
|
|
|
/* set to yesterday */
|
|
else {
|
|
day = tp->tm_mday - 1;
|
|
if (day == 0)
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* wired */
|
|
else {
|
|
day = tp->tm_mday + (((day - 1) - tp->tm_wday + 7) % 7);
|
|
*varp = 1;
|
|
}
|
|
}
|
|
|
|
if (!(flags & F_EASTER)) {
|
|
*monthp = month;
|
|
*dayp = day;
|
|
day = cumdays[month] + day;
|
|
}
|
|
else {
|
|
for (v1 = 0; day > cumdays[v1]; v1++)
|
|
;
|
|
*monthp = v1 - 1;
|
|
*dayp = day - cumdays[v1 - 1];
|
|
*varp = 1;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "day2: day %d(%d-%d) yday %d\n", *dayp, day, cumdays[month], tp->tm_yday);
|
|
#endif
|
|
/* if today or today + offset days */
|
|
if (day >= tp->tm_yday - f_dayBefore &&
|
|
day <= tp->tm_yday + offset + f_dayAfter)
|
|
return (1);
|
|
|
|
/* if number of days left in this year + days to event in next year */
|
|
if (yrdays - tp->tm_yday + day <= offset + f_dayAfter ||
|
|
/* a year backward, eg. 6 Jan and 10 days before -> 27. Dec */
|
|
tp->tm_yday + day - f_dayBefore < 0
|
|
)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
|
|
int
|
|
getmonth(s)
|
|
register char *s;
|
|
{
|
|
register char **p;
|
|
struct fixs *n;
|
|
|
|
for (n = fnmonths; n->name; ++n)
|
|
if (!strncasecmp(s, n->name, n->len))
|
|
return ((n - fnmonths) + 1);
|
|
for (n = nmonths; n->name; ++n)
|
|
if (!strncasecmp(s, n->name, n->len))
|
|
return ((n - nmonths) + 1);
|
|
for (p = months; *p; ++p)
|
|
if (!strncasecmp(s, *p, 3))
|
|
return ((p - months) + 1);
|
|
return (0);
|
|
}
|
|
|
|
|
|
int
|
|
getday(s)
|
|
register char *s;
|
|
{
|
|
register char **p;
|
|
struct fixs *n;
|
|
|
|
for (n = fndays; n->name; ++n)
|
|
if (!strncasecmp(s, n->name, n->len))
|
|
return ((n - fndays) + 1);
|
|
for (n = ndays; n->name; ++n)
|
|
if (!strncasecmp(s, n->name, n->len))
|
|
return ((n - ndays) + 1);
|
|
for (p = days; *p; ++p)
|
|
if (!strncasecmp(s, *p, 3))
|
|
return ((p - days) + 1);
|
|
return (0);
|
|
}
|
|
|
|
/* return offset for variable weekdays
|
|
* -1 -> last weekday in month
|
|
* +1 -> first weekday in month
|
|
* ... etc ...
|
|
*/
|
|
int
|
|
getdayvar(s)
|
|
register char *s;
|
|
{
|
|
register int offset;
|
|
|
|
|
|
offset = strlen(s);
|
|
|
|
|
|
/* Sun+1 or Wednesday-2
|
|
* ^ ^ */
|
|
|
|
/* fprintf(stderr, "x: %s %s %d\n", s, s + offset - 2, offset); */
|
|
switch(*(s + offset - 2)) {
|
|
case '-':
|
|
return(-(atoi(s + offset - 1)));
|
|
break;
|
|
case '+':
|
|
return(atoi(s + offset - 1));
|
|
break;
|
|
}
|
|
|
|
|
|
/*
|
|
* some aliases: last, first, second, third, fourth
|
|
*/
|
|
|
|
/* last */
|
|
if (offset > 4 && !strcasecmp(s + offset - 4, "last"))
|
|
return(-1);
|
|
else if (offset > 5 && !strcasecmp(s + offset - 5, "first"))
|
|
return(+1);
|
|
else if (offset > 6 && !strcasecmp(s + offset - 6, "second"))
|
|
return(+2);
|
|
else if (offset > 5 && !strcasecmp(s + offset - 5, "third"))
|
|
return(+3);
|
|
else if (offset > 6 && !strcasecmp(s + offset - 6, "fourth"))
|
|
return(+4);
|
|
|
|
|
|
/* no offset detected */
|
|
return(0);
|
|
}
|