Assuming you don't actually need any of the intermediate stuff, this calculates it directly:
#!/usr/bin/perl -slw
use strict;
use warnings;
use Time::Local;
use Test::More "no_plan";
sub lastBusinessDayPrevQ {
my( $y, $m, $d ) = unpack 'A4A2A2', shift;
my $t = timelocal( 0,0,12, $d, $m-1, $y );
$t -= 43200 until localtime( $t ) !~ m[Mar|Jun|Sep|Dec];
$t -= 43200 until localtime( $t ) =~ m[Mar|Jun|Sep|Dec];
$t -= 43200 until localtime( $t ) =~ m[Mon|Tue|Wed|Thu|Fri];
( $y, $m, $d ) = unpack 'x20a4 X20a3 xa2', scalar localtime( $t );
$m = { Mar=>'03', Jun=>'06', Sep=>'09', Dec=>'12' }->{ $m };
return join '', $y, $m, $d;
}
test();
sub test {
ok ( lastBusinessDayPrevQ("20110901") eq "20110630");
ok ( lastBusinessDayPrevQ("20120101") eq "20111230");
}
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.