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|
#!perl -w
###############################################################################
## ##
## Copyright (c) 2005 - 2009 by Steffen Beyer. ##
## All rights reserved. ##
## ##
## This program is free software; you can redistribute it ##
## and/or modify it under the same terms as Perl itself. ##
## ##
###############################################################################
#########################################################
## ##
## See http://www.engelschall.com/u/sb/datecalc/ ##
## for a "live" example of this CGI script. ##
## ##
#########################################################
BEGIN { eval { require bytes; }; }
use strict;
use Date::Pcalc qw(:all);
my @date = ( Today() );
my @data = ( @date,0,0,0 );
my @diff = ( @date,@date );
&process_query_string();
unless ($data[3] == 0 and $data[4] == 0 and $data[5] == 0)
{
eval
{
if ($data[5] == 0) { @data[0..2] = Add_Delta_YM( @data[0..4] ); }
else { @data[0..2] = Add_Delta_YMD( @data ); }
@data[3..5] = (0,0,0);
};
if ($@) { @data = ( @date,0,0,0 ); }
}
&print_page();
sub process_query_string()
{
my $query = $ENV{'QUERY_STRING'} || $ENV{'REDIRECT_QUERY_STRING'} || '';
my @pairs = split(/&/, $query);
my($pair,$var,$val);
foreach $pair (@pairs)
{
($var,$val) = split(/=/,$pair,2);
if ($var eq 'y')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 32767) { $data[0] = $val; }
}
elsif ($var eq 'm')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 12) { $data[1] = $val; }
}
elsif ($var eq 'd')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 31) { $data[2] = $val; }
}
elsif ($var eq 'dy')
{
if ($val =~ m!^[+-]?[0-9]+$!) { $data[3] = $val; }
}
elsif ($var eq 'dm')
{
if ($val =~ m!^[+-]?[0-9]+$!) { $data[4] = $val; }
}
elsif ($var eq 'dd')
{
if ($val =~ m!^[+-]?[0-9]+$!) { $data[5] = $val; }
}
elsif ($var eq 'y1')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 32767) { $diff[0] = $val; }
}
elsif ($var eq 'm1')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 12) { $diff[1] = $val; }
}
elsif ($var eq 'd1')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 31) { $diff[2] = $val; }
}
elsif ($var eq 'y2')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 32767) { $diff[3] = $val; }
}
elsif ($var eq 'm2')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 12) { $diff[4] = $val; }
}
elsif ($var eq 'd2')
{
if ($val =~ m!^[+-]?[0-9]+$! and $val >= 1 and $val <= 31) { $diff[5] = $val; }
}
}
unless (check_date( @data[0..2] )) { @data[0..2] = @date; }
unless (check_date( @diff[0..2] )) { @diff[0..2] = @date; }
unless (check_date( @diff[3..5] )) { @diff[3..5] = @date; }
}
sub print_page()
{
my($date) = Date_to_Text_Long( @data[0..2] );
my $delta = Delta_Days(@diff);
my $diff0 = join(', ', Enumerate( $delta,qw( day)) );
my $diff1 = join(', ', Enumerate( Delta_YMD(@diff),qw(year month day)) );
my $diff2 = join(', ', Enumerate(N_Delta_YMD(@diff),qw(year month day)) );
print <<"VERBATIM";
Content-type: text/html; charset="iso-8859-1"
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="expires" CONTENT="now">
<TITLE>Steffen Beyer's Date Calculator</TITLE>
</HEAD>
<BODY BGCOLOR="#F0F0F0">
<CENTER>
<P>
<HR NOSHADE SIZE="2">
<P>
<H1>Steffen Beyer's Date Calculator</H1>
<P>
<HR NOSHADE SIZE="2">
<P>
<FORM METHOD="GET" ACTION="">
<TABLE BGCOLOR="#DBDBDB" CELLSPACING="1" CELLPADDING="12" BORDER="1">
<TR>
<TD ALIGN="center" COLSPAN="6"><B>+</B></TD>
</TR>
<TR>
<TD ALIGN="center" WIDTH="100">Year</TD>
<TD ALIGN="center" WIDTH="100">Month</TD>
<TD ALIGN="center" WIDTH="100">Day</TD>
<TD ALIGN="center" WIDTH="100">Delta-Year</TD>
<TD ALIGN="center" WIDTH="100">Delta-Month</TD>
<TD ALIGN="center" WIDTH="100">Delta-Day</TD>
</TR>
<TR>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="y" VALUE="$data[0]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="m" VALUE="$data[1]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="d" VALUE="$data[2]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="dy" VALUE="$data[3]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="dm" VALUE="$data[4]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="dd" VALUE="$data[5]"></TD>
</TR>
<INPUT TYPE="hidden" NAME="y1" VALUE="$diff[0]"></TD>
<INPUT TYPE="hidden" NAME="m1" VALUE="$diff[1]"></TD>
<INPUT TYPE="hidden" NAME="d1" VALUE="$diff[2]"></TD>
<INPUT TYPE="hidden" NAME="y2" VALUE="$diff[3]"></TD>
<INPUT TYPE="hidden" NAME="m2" VALUE="$diff[4]"></TD>
<INPUT TYPE="hidden" NAME="d2" VALUE="$diff[5]"></TD>
<TR>
<TD ALIGN="center" COLSPAN="6"><FONT COLOR="#FF0000">$date</FONT></TD>
</TR>
<TR>
<TD ALIGN="center" COLSPAN="3"><INPUT TYPE="reset" VALUE="CE"></TD>
<TD ALIGN="center" COLSPAN="3"><INPUT TYPE="submit" VALUE="="></TD>
</FORM>
</TR>
<TR>
<FORM METHOD="GET" ACTION="">
<INPUT TYPE="hidden" NAME="y" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d" VALUE="$date[2]"></TD>
<INPUT TYPE="hidden" NAME="dy" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="dm" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="dd" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="y1" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m1" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d1" VALUE="$date[2]"></TD>
<INPUT TYPE="hidden" NAME="y2" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m2" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d2" VALUE="$date[2]"></TD>
<TD ALIGN="center" COLSPAN="6"><INPUT TYPE="submit" VALUE="C"></TD>
</FORM>
</TR>
</TABLE>
<P>
<HR NOSHADE SIZE="2">
<P>
<FORM METHOD="GET" ACTION="">
<TABLE BGCOLOR="#DBDBDB" CELLSPACING="1" CELLPADDING="12" BORDER="1">
<TR>
<TD ALIGN="center" COLSPAN="6"><B>-</B></TD>
</TR>
<TR>
<TD ALIGN="center" WIDTH="100">Year(1)</TD>
<TD ALIGN="center" WIDTH="100">Month(1)</TD>
<TD ALIGN="center" WIDTH="100">Day(1)</TD>
<TD ALIGN="center" WIDTH="100">Year(2)</TD>
<TD ALIGN="center" WIDTH="100">Month(2)</TD>
<TD ALIGN="center" WIDTH="100">Day(2)</TD>
</TR>
<TR>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="y1" VALUE="$diff[0]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="m1" VALUE="$diff[1]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="d1" VALUE="$diff[2]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="y2" VALUE="$diff[3]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="m2" VALUE="$diff[4]"></TD>
<TD ALIGN="center"><INPUT TYPE="text" SIZE="6" MAXLENGTH="6" NAME="d2" VALUE="$diff[5]"></TD>
</TR>
<INPUT TYPE="hidden" NAME="y" VALUE="$data[0]"></TD>
<INPUT TYPE="hidden" NAME="m" VALUE="$data[1]"></TD>
<INPUT TYPE="hidden" NAME="d" VALUE="$data[2]"></TD>
<INPUT TYPE="hidden" NAME="dy" VALUE="$data[3]"></TD>
<INPUT TYPE="hidden" NAME="dm" VALUE="$data[4]"></TD>
<INPUT TYPE="hidden" NAME="dd" VALUE="$data[5]"></TD>
<TR>
VERBATIM
if (abs($delta) > 30)
{
print <<"VERBATIM";
<TD ALIGN="right" COLSPAN="3"><FONT COLOR="#FF0000">$diff0</FONT></TD>
<TD ALIGN="left" COLSPAN="3">(absolute semantics)</TD>
</TR>
<TR>
VERBATIM
}
if ($diff1 eq $diff2)
{
print <<"VERBATIM";
<TD ALIGN="right" COLSPAN="3"><FONT COLOR="#FF0000">$diff1</FONT></TD>
<TD ALIGN="left" COLSPAN="3">(both one-by-one and left-to-right semantics)</TD>
VERBATIM
}
else
{
print <<"VERBATIM";
<TD ALIGN="right" COLSPAN="3"><FONT COLOR="#FF0000">$diff1</FONT></TD>
<TD ALIGN="left" COLSPAN="3">(one-by-one semantics)</TD>
</TR>
<TR>
<TD ALIGN="right" COLSPAN="3"><FONT COLOR="#FF0000">$diff2</FONT></TD>
<TD ALIGN="left" COLSPAN="3">(left-to-right with truncation semantics)</TD>
VERBATIM
}
print <<"VERBATIM";
</TR>
<TR>
<TD ALIGN="center" COLSPAN="3"><INPUT TYPE="reset" VALUE="CE"></TD>
<TD ALIGN="center" COLSPAN="3"><INPUT TYPE="submit" VALUE="="></TD>
</FORM>
</TR>
<TR>
<FORM METHOD="GET" ACTION="">
<INPUT TYPE="hidden" NAME="y" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d" VALUE="$date[2]"></TD>
<INPUT TYPE="hidden" NAME="dy" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="dm" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="dd" VALUE="0"></TD>
<INPUT TYPE="hidden" NAME="y1" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m1" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d1" VALUE="$date[2]"></TD>
<INPUT TYPE="hidden" NAME="y2" VALUE="$date[0]"></TD>
<INPUT TYPE="hidden" NAME="m2" VALUE="$date[1]"></TD>
<INPUT TYPE="hidden" NAME="d2" VALUE="$date[2]"></TD>
<TD ALIGN="center" COLSPAN="6"><INPUT TYPE="submit" VALUE="C"></TD>
</FORM>
</TR>
</TABLE>
<P>
<HR NOSHADE SIZE="2">
<P>
<A HREF="http://www.engelschall.com/u/sb/download/pkg/Date-Pcalc-6.1.tar.gz">Download</A>
the Perl software that does all <A HREF="datecalc.pl">this</A>!
<P>
<HR NOSHADE SIZE="2">
<P>
</CENTER>
</BODY>
</HTML>
VERBATIM
}
sub Enumerate
{
my(@data) = @_;
my($i);
my $n = scalar(@data) >> 1;
for ( $i = 0; $i < $n; $i++ )
{
$data[$i] = ( ($data[$i] > 0) ? '+' : '' ) . $data[$i] . ' ' . $data[$i+$n] . ( (abs($data[$i]) == 1) ? '' : 's' );
}
splice(@data,$n);
return(@data);
}
__END__
|
