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1 | ;# ctime.pl is a simple Perl emulation for the well known ctime(3C) function. |
2 | ;# | |
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 | ;# $RCSfile: ctime.pl,v $$Revision: 4.0.1.1 $$Date: 92/06/08 13:38:06 $ | |
7 | ;# Marion Hakanson (hakanson@cse.ogi.edu) | |
8 | ;# Oregon Graduate Institute of Science and Technology | |
9 | ;# | |
10 | ;# usage: | |
11 | ;# | |
12 | ;# #include <ctime.pl> # see the -P and -I option in perl.man | |
13 | ;# $Date = &ctime(time); | |
14 | ||
15 | CONFIG: { | |
16 | package ctime; | |
17 | ||
18 | @DoW = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat'); | |
19 | @MoY = ('Jan','Feb','Mar','Apr','May','Jun', | |
20 | 'Jul','Aug','Sep','Oct','Nov','Dec'); | |
21 | } | |
22 | ||
23 | sub ctime { | |
24 | package ctime; | |
25 | ||
26 | local($time) = @_; | |
27 | local($[) = 0; | |
28 | local($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst); | |
29 | ||
30 | # Determine what time zone is in effect. | |
31 | # Use GMT if TZ is defined as null, local time if TZ undefined. | |
32 | # There's no portable way to find the system default timezone. | |
33 | ||
34 | $TZ = defined($ENV{'TZ'}) ? ( $ENV{'TZ'} ? $ENV{'TZ'} : 'GMT' ) : ''; | |
35 | ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = | |
36 | ($TZ eq 'GMT') ? gmtime($time) : localtime($time); | |
37 | ||
38 | # Hack to deal with 'PST8PDT' format of TZ | |
39 | # Note that this can't deal with all the esoteric forms, but it | |
40 | # does recognize the most common: [:]STDoff[DST[off][,rule]] | |
41 | ||
42 | if($TZ=~/^([^:\d+\-,]{3,})([+-]?\d{1,2}(:\d{1,2}){0,2})([^\d+\-,]{3,})?/){ | |
43 | $TZ = $isdst ? $4 : $1; | |
44 | } | |
45 | $TZ .= ' ' unless $TZ eq ''; | |
46 | ||
47 | $year += ($year < 70) ? 2000 : 1900; | |
48 | sprintf("%s %s %2d %2d:%02d:%02d %s%4d\n", | |
49 | $DoW[$wday], $MoY[$mon], $mday, $hour, $min, $sec, $TZ, $year); | |
50 | } | |
51 | 1; |