diff options
Diffstat (limited to 'usr.sbin/xntpd/scripts/monitoring/timelocal.pl')
| -rwxr-xr-x | usr.sbin/xntpd/scripts/monitoring/timelocal.pl | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/usr.sbin/xntpd/scripts/monitoring/timelocal.pl b/usr.sbin/xntpd/scripts/monitoring/timelocal.pl deleted file mode 100755 index 061f925ac915..000000000000 --- a/usr.sbin/xntpd/scripts/monitoring/timelocal.pl +++ /dev/null @@ -1,78 +0,0 @@ -;# timelocal.pl -;# -;# Usage: -;# $time = timelocal($sec,$min,$hours,$mday,$mon,$year,$junk,$junk,$isdst); -;# $time = timegm($sec,$min,$hours,$mday,$mon,$year); - -;# These routines are quite efficient and yet are always guaranteed to agree -;# with localtime() and gmtime(). We manage this by caching the start times -;# of any months we've seen before. If we know the start time of the month, -;# we can always calculate any time within the month. The start times -;# themselves are guessed by successive approximation starting at the -;# current time, since most dates seen in practice are close to the -;# current date. Unlike algorithms that do a binary search (calling gmtime -;# once for each bit of the time value, resulting in 32 calls), this algorithm -;# calls it at most 6 times, and usually only once or twice. If you hit -;# the month cache, of course, it doesn't call it at all. - -;# timelocal is implemented using the same cache. We just assume that we're -;# translating a GMT time, and then fudge it when we're done for the timezone -;# and daylight savings arguments. The timezone is determined by examining -;# the result of localtime(0) when the package is initialized. The daylight -;# savings offset is currently assumed to be one hour. - -CONFIG: { - package timelocal; - - @epoch = localtime(0); - $tzmin = $epoch[2] * 60 + $epoch[1]; # minutes east of GMT - if ($tzmin > 0) { - $tzmin = 24 * 60 - $tzmin; # minutes west of GMT - $tzmin -= 24 * 60 if $epoch[5] == 70; # account for the date line - } - - $SEC = 1; - $MIN = 60 * $SEC; - $HR = 60 * $MIN; - $DAYS = 24 * $HR; - $YearFix = ((gmtime(946684800))[5] == 100) ? 100 : 0; - 1; -} - -sub timegm { - package timelocal; - - $ym = pack(C2, @_[5,4]); - $cheat = $cheat{$ym} || &cheat; - $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS; -} - -sub timelocal { - package timelocal; - - $ym = pack(C2, @_[5,4]); - $cheat = $cheat{$ym} || &cheat; - $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS - + $tzmin * $MIN - 60 * 60 * ($_[8] != 0); -} - -package timelocal; - -sub cheat { - $year = $_[5]; - $month = $_[4]; - $guess = $^T; - @g = gmtime($guess); - $year += $YearFix if $year < $epoch[5]; - while ($diff = $year - $g[5]) { - $guess += $diff * (364 * $DAYS); - @g = gmtime($guess); - } - while ($diff = $month - $g[4]) { - $guess += $diff * (28 * $DAYS); - @g = gmtime($guess); - } - $g[3]--; - $guess -= $g[0] * $SEC + $g[1] * $MIN + $g[2] * $HR + $g[3] * $DAYS; - $cheat{$ym} = $guess; -} |
