int
mktimes(char *buf, int len, char *fmt, char *tzname)
{
time_t tim;
struct tm *timtm;
int warn = 0; // TODO: make this much more general.
bzero(buf, sizeof(buf));
settz(tzname);
tim = time(NULL);
timtm = localtime(&tim);
if (timtm == NULL) {
perror("localtime");
exit(1);
}
if (timtm->tm_hour == 17 && timtm->tm_min > 45) {
warn = 1;
}
else if (timtm->tm_hour == 18 && timtm->tm_min < 15) {
warn = 1;
}
if (!strftime(buf, len-1, fmt, timtm)) {
fprintf(stderr, "strftime == 0\n");
exit(1);
}
return warn;
}
char *mktimes(char *fmt, char *tzname) {
char buf[129];
time_t tim;
struct tm *timtm;
memset(buf, 0, sizeof(buf));
settz(tzname);
tim = time(NULL);
timtm = localtime(&tim);
if (timtm == NULL) {
perror("localtime");
exit(1);
}
if (!strftime(buf, sizeof(buf)-1, fmt, timtm)) {
fprintf(stderr, "strftime == 0\n");
exit(1);
}
return smprintf("%s", buf);
}
/*
* Преобразование строки даты из Unix-формата в RFC 1036.
* Wdy, DD Mon YY HH:MM:SS *HHMM
* 0 0 0 0
* Wdy Mon DD HH:MM:SS YYYY
*/
static char *ctim2rfc (register char *ct, int tz)
{
if (ct[8] == ' ')
ct[8] = '0';
strcpy (buf, "Wdy, DD Mon YY HH:MM:SS *HHMM");
strncpy (buf, ct, 3); /* Wdy */
strncpy (buf+5, ct+8, 2); /* DD */
strncpy (buf+8, ct+4, 3); /* Mon */
strncpy (buf+15, ct+11, 8); /* HH:MM:SS */
if (ct[20] == '1' || ct[20] == '2')
strncpy (buf+12, ct+22, 2); /* YY */
else {
char *czone;
/* Wdy Mon DD HH:MM:SS DST YYYY */
strncpy (buf+12, ct+26, 2); /* YY */
czone = ct + 20;
tz = getkeyword (&czone, zonetab, KEYSIZE (zonetab));
if (tz == ERROR)
tz = 0;
}
settz (buf, tz);
return (buf);
}
/*
* Преобразование даты в стандарт RFC 1036.
*/
char *rfcdate (char *ctim)
{
#define skip(p) while (*(p)==' ' || *(p)=='\t') ++(p)
int wday, day, mon, year, h, m, s, tz;
skip (ctim);
if (ctim[3]==' ' && ctim[7]==' ' && ctim[10]==' ' &&
ctim[13]==':' && ctim[16]==':' && ctim[19]==' ' &&
(ctim[20]=='1' || ctim[20]=='2' || ctim[24]=='1' || ctim[24]=='2'))
return (ctim2rfc (ctim, 0));
/* [Wdy,] DD Mon YY HH:MM[:SS] TIMEZONE */
if ((*ctim>='A' && *ctim<='Z') || (*ctim>='a' && *ctim<='z')) {
wday = getkeyword (&ctim, daytab, KEYSIZE (daytab));
if (wday == ERROR)
return (0);
if (*ctim == ',')
++ctim;
skip (ctim);
} else
wday = -1;
day = getint (&ctim);
if (day < 0)
return (0);
skip (ctim);
mon = getkeyword (&ctim, monthtab, KEYSIZE (monthtab));
if (mon == ERROR)
return (0);
skip (ctim);
year = getint (&ctim);
if (year < 0)
return (0);
if (year < 70)
year += 2000;
else if (year < 100)
year += 1900;
if (year <= 1981) /* ancient date */
return (0);
skip (ctim);
if (*ctim>='0' && *ctim<='9') {
h = getint (&ctim);
if (h<0 || *ctim!=':')
return (0);
++ctim;
skip (ctim);
m = getint (&ctim);
if (m < 0)
return (0);
if (*ctim == ':') {
++ctim;
skip (ctim);
s = getint (&ctim);
if (s < 0)
return (0);
} else
s = 0;
skip (ctim);
} else {
h = 12;
m = s = 0;
}
if (*ctim=='+' || *ctim=='-') {
int sign = (*ctim == '+');
++ctim;
skip (ctim);
tz = getint (&ctim);
if (tz < 0)
return (0);
tz = tz / 100 * 60 + tz % 100;
if (sign)
tz = -tz;
} else if (*ctim) {
tz = getkeyword (&ctim, zonetab, KEYSIZE (zonetab));
if (tz == ERROR)
return (0);
} else
tz = 0;
if (wday < 0)
wday = weekday (day, mon, year);
sprintf (buf, "%s, %02d %s %02d %02d:%02d:%02d *HHMM",
dayname [wday], day, monthname [mon-1],
year % 100, h, m, s);
settz (buf, tz);
return (buf);
}
size_t
my_strftime(
char *s,
size_t maxsize,
const char *format,
struct tm *timeptr)
{
#ifdef HAVE_STRFTIME
return strftime(s, maxsize, format, timeptr);
#else
char *endp = s + maxsize;
char *start = s;
char tbuf[100];
int i;
/*
* various tables, useful in North America
*/
static const char *days_a[] = {
"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat",
};
static const char *days_l[] = {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday",
};
static const char *months_a[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
};
static const char *months_l[] = {
"January", "February", "March", "April",
"May", "June", "July", "August", "September",
"October", "November", "December",
};
static const char *ampm[] = { "AM", "PM", };
if (s == NULL || format == NULL || timeptr == NULL || maxsize == 0)
return 0;
if (strchr(format, '%') == NULL && strlen(format) + 1 >= maxsize)
return 0;
#ifdef HAVE_TZSET
tzset();
#else
# ifdef HAVE_SETTZ
settz();
# endif /* HAVE_SETTZ */
#endif /* HAVE_TZSET */
for (; *format && s < endp - 1; format++) {
tbuf[0] = '\0';
if (*format != '%') {
*s++ = *format;
continue;
}
switch (*++format) {
case '\0':
*s++ = '%';
goto out;
case '%':
*s++ = '%';
continue;
case 'a': /* abbreviated weekday name */
strcpy(tbuf, days_a[timeptr->tm_wday]);
break;
case 'A': /* full weekday name */
strcpy(tbuf, days_l[timeptr->tm_wday]);
break;
# ifdef SYSV_EXT
case 'h': /* abbreviated month name */
# endif /* SYSV_EXT */
case 'b': /* abbreviated month name */
strcpy(tbuf, months_a[timeptr->tm_mon]);
break;
case 'B': /* full month name */
strcpy(tbuf, months_l[timeptr->tm_mon]);
break;
case 'c': /* appropriate date and time representation */
sprintf(tbuf, "%s %s %2d %02d:%02d:%02d %d",
days_a[timeptr->tm_wday],
months_a[timeptr->tm_mon],
timeptr->tm_mday,
timeptr->tm_hour,
timeptr->tm_min,
timeptr->tm_sec,
timeptr->tm_year + 1900);
break;
case 'd': /* day of the month, 01 - 31 */
sprintf(tbuf, "%02d", timeptr->tm_mday);
break;
case 'H': /* hour, 24-hour clock, 00 - 23 */
sprintf(tbuf, "%02d", timeptr->tm_hour);
break;
case 'I': /* hour, 12-hour clock, 01 - 12 */
i = timeptr->tm_hour;
if (i == 0)
i = 12;
else if (i > 12)
i -= 12;
sprintf(tbuf, "%02d", i);
break;
case 'j': /* day of the year, 001 - 366 */
sprintf(tbuf, "%03d", timeptr->tm_yday + 1);
break;
case 'm': /* month, 01 - 12 */
sprintf(tbuf, "%02d", timeptr->tm_mon + 1);
break;
case 'M': /* minute, 00 - 59 */
sprintf(tbuf, "%02d", timeptr->tm_min);
break;
case 'p': /* am or pm based on 12-hour clock */
strcpy(tbuf, ampm[((timeptr->tm_hour < 12) ? 0 : 1)]);
break;
case 'S': /* second, 00 - 61 */
sprintf(tbuf, "%02d", timeptr->tm_sec);
break;
case 'w': /* weekday, Sunday == 0, 0 - 6 */
sprintf(tbuf, "%d", timeptr->tm_wday);
break;
case 'x': /* appropriate date representation */
sprintf(tbuf, "%s %s %2d %d",
days_a[timeptr->tm_wday],
months_a[timeptr->tm_mon],
timeptr->tm_mday,
timeptr->tm_year + 1900);
break;
case 'X': /* appropriate time representation */
sprintf(tbuf, "%02d:%02d:%02d",
timeptr->tm_hour,
timeptr->tm_min,
timeptr->tm_sec);
break;
case 'y': /* year without a century, 00 - 99 */
i = timeptr->tm_year % 100;
sprintf(tbuf, "%d", i);
break;
case 'Y': /* year with century */
sprintf(tbuf, "%d", timeptr->tm_year + 1900);
break;
# ifdef SYSV_EXT
case 'n': /* same as \n */
tbuf[0] = '\n';
tbuf[1] = '\0';
break;
case 't': /* same as \t */
tbuf[0] = '\t';
tbuf[1] = '\0';
break;
case 'D': /* date as %m/%d/%y */
my_strftime(tbuf, sizeof tbuf, "%m/%d/%y", timeptr);
break;
case 'e': /* day of month, blank padded */
sprintf(tbuf, "%2d", timeptr->tm_mday);
break;
case 'r': /* time as %I:%M:%S %p */
my_strftime(tbuf, sizeof tbuf, "%I:%M:%S %p", timeptr);
break;
case 'R': /* time as %H:%M */
my_strftime(tbuf, sizeof tbuf, "%H:%M", timeptr);
break;
case 'T': /* time as %H:%M:%S */
my_strftime(tbuf, sizeof tbuf, "%H:%M:%S", timeptr);
break;
# endif /* SYSV_EXT */
default:
tbuf[0] = '%';
tbuf[1] = *format;
tbuf[2] = '\0';
break;
}
if ((i = strlen(tbuf))) {
if (s + i < endp - 1) {
strcpy(s, tbuf);
s += i;
} else
return 0;
}
}
out:
if (s < endp && *format == '\0') {
*s = '\0';
return (size_t) (s - start);
} else
return 0;
#endif /* HAVE_STRFTIME */
}
