plan9port/dist/addsrclinks

#!/usr/bin/env perl

@_ = <>;
my $root = $ENV{'PLAN9'};
my $html = join("", @_);
$html =~ s;$root/;XXX$root/;g;
$newhtml = "";
while($html =~ /XXX($root\/([a-zA-Z0-9_.\/]|&#8722;)*[a-zA-Z0-9_\/])/){
	($a, $b, $c) = ($`, $1, $');
	$b =~ s/&#8722;/-/g;
	$l = $b;
	while(! -e $l){
		if($l =~ /(.*\/)(.+)/){
			$l = $1;
		}else{
			last;
		}
	}
	$bb = substr($b, length($l));
	$b = $l;
	$b =~ s/-/\&#8722;/g;
	$bb =~ s/-/\&#8722;/g;
	$newhtml .= "$a<a href=\"$l\">$b</a>$bb";
	$html = $c;
}
$newhtml .= $html;
print $newhtml;