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improving footer

# perl script

# a quick and dirty xml reading and substitution

# --------------------------------------- slurp in information
unless (scalar(@ARGV)==2) {
    die("invalid invocation of doc_template.pl");
}
my $template=shift @ARGV; my $data=shift @ARGV;
my @lines;
open IN,"<$data" or die("no file $data");
@lines=<IN>; close IN; $d=join('',@lines);
open IN,"<$template" or die("no file $data");
@lines=<IN>; close IN; $t=join('',@lines);

# ------- read in values from data
$d=~/\<title.*?\>(.*?)\<\/title.*?\>/s;
my $title=$1;
$t=~s/\<TITLE \/\>/$title/g;
$d=~/\$(.*?)\$/;
my $e=$1;
$e=~s/\S*\s\S*\s+\S*$/ updated by Scott Harrison/;
my $cvsdate="<font size=\"-2\"><i>CVS $e</i></font>";
$t=~s/\<DATE \/\>/$cvsdate/g;
$d=~/\<\!\-\- pdfahref (.*?) \-\-\>/;
my $pdfahref="<a href='$1'>";
$t=~s/\<PDFAHREF \/\>/$pdfahref/g;

my %bhash=(
    'CONFIGURE' => '/docs/reconfig/index.html',
    'INSTALL' => '/docs/install/index.html',
    'UPGRADE' => '/docs/upgrade/index.html',
    'FAQ' => '/docs/faq/index.html',
    'DOWNLOADS' => '/docs/downloads/index.html',
    'CONTACT' => '/docs/contact/index.html',
    'MAIN-SITE' => 'http://install.lon-capa.org',
    'LICENSE' => '/docs/license/index.html',
);

$d=~/\<\!\-\- button (.*?) \-\-\>/;
my $buttonv=$1;
while (1) {
    if ($t=~/\<BUTTON NAME=\'(.*?)\' \/\>/) {
	my $bname=$1;
	my $button;
	my $bh=$bhash{$bname};
	if ($buttonv eq $bname) {
	    $button=<<END;
<table cellpadding='5' cellspacing='0' border='3'><tr><td>
<a href='$bh'>
<font face='helvetica'>
<font color='#009900'>
$bname
</font>
</font>
</a>
</td></tr></table>
END
        }
	else {
	    $button=<<END;
<table cellpadding='5' cellspacing='0' border='1'><tr><td>
<a href='$bh'>
<strong><font face='helvetica'>
<font color='#009900'>$bname</font>
</font></strong></a>
</td></tr></table>
END
	}
	$t=~s/\<BUTTON NAME=\'$bname\' \/\>/$button/g;
    }
    else {
	last;
    }
}
$d=~/\<\!\-\- preamble start \-\-\>(.*?)\<\!\-\- preamble end \-\-\>/s;
my $preamble=$1;
$t=~s/\<PREAMBLE \/\>/$preamble/g;
$d=~/\<\!\-\- maintext start \-\-\>(.*?)\<\!\-\- maintext end \-\-\>/s;
my $maintext=$1;
$t=~s/\<MAINTEXT \/\>/$maintext/g;
print $t;