1 ;# ctime.pl is a simple Perl emulation for the well known ctime(3C) function.
3 ;# Waldemar Kebsch, Federal Republic of Germany, November 1988
4 ;# kebsch.pad@nixpbe.UUCP
5 ;# Modified March 1990, Feb 1991 to properly handle timezones
6 ;# $Id: ctime.pl,v 1.8 91/02/04 18:28:12 hakanson Exp $
7 ;# Marion Hakanson (hakanson@cse.ogi.edu)
8 ;# Oregon Graduate Institute of Science and Technology
12 ;# #include <ctime.pl> # see the -P and -I option in perl.man
13 ;# $Date = &ctime(time);
18 @DoW = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat');
19 @MoY = ('Jan','Feb','Mar','Apr','May','Jun',
20 'Jul','Aug','Sep','Oct','Nov','Dec');
27 local($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst);
29 # Determine what time zone is in effect.
30 # Use GMT if TZ is defined as null, local time if TZ undefined.
31 # There's no portable way to find the system default timezone.
33 $TZ = defined($ENV{'TZ'}) ? ( $ENV{'TZ'} ? $ENV{'TZ'} : 'GMT' ) : '';
34 ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) =
35 ($TZ eq 'GMT') ? gmtime($time) : localtime($time);
37 # Hack to deal with 'PST8PDT' format of TZ
38 # Note that this can't deal with all the esoteric forms, but it
39 # does recognize the most common: [:]STDoff[DST[off][,rule]]
41 if($TZ=~/^([^:\d+\-,]{3,})([+-]?\d{1,2}(:\d{1,2}){0,2})([^\d+\-,]{3,})?/){
42 $TZ = $isdst ? $4 : $1;
44 $TZ .= ' ' unless $TZ eq '';
46 $year += ($year < 70) ? 2000 : 1900;
47 sprintf("%s %s %2d %2d:%02d:%02d %s%4d\n",
48 $DoW[$wday], $MoY[$mon], $mday, $hour, $min, $sec, $TZ, $year);