X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/084e72d390de05bfa7f16b54b97f339d491bfff2..dbcdb5b8c11c68f0ee281488009a00a822ca5680:/perl.plp

diff --git a/perl.plp b/perl.plp
index 1635621..c227a9c 100644
--- a/perl.plp
+++ b/perl.plp
@@ -2,7 +2,7 @@
 
 Html({
 	title => 'perl version cheat sheet',
-	version => '1.3',
+	version => '1.4',
 	keywords => [qw'
 		perl version feature features comparison
 		sheet cheat overview summary
@@ -17,19 +17,48 @@ Html({
 <p>The most significant features introduced for recent versions of the Perl
 scripting language.
 <:
-my $info = do 'perl.inc.pl' or die $@ // $!;
+my $info = Data('perl');
 
-say "Depending on desired compatibility you'll want to support a minimum of";
-say join(' or ', map {
-	sprintf '<span title="on %s">v%vd</span>', $info->{$_}->{distrosum}, $_
-} v5.8, v5.20), '.';
+use feature 'signatures';
+sub vname ($v) {
+	return sprintf 'v%d%03d', unpack 'C*', $v;
+}
+sub linkversion ($v) {
+	return showlink(sprintf('%vd', $v), '#'.vname($v));
+}
+
+eval {
+	use List::Util 'first';
+	use Time::Piece;
+	use Time::Seconds;
+
+	my $now = Time::Piece->new;
+	my $coreeol = ($now - ONE_YEAR * 3)->strftime('%F');
+	my $vcore = first { $info->{$_}{release} ge $coreeol } sort keys %{$info};
+	say "<p>Core security support is provided for 3 years",
+		", so typical users should run at least $_."
+		for linkversion($vcore);
+
+	my $vendoreol = ($now - ONE_YEAR * 5)->strftime('%F');
+	my $vdebian = first {
+		$info->{$_}{release} ge $vendoreol && $info->{$_}{distro}{debian}
+	} sort keys %{$info};
+	say sprintf "Stable distributions such as Debian %s maintain %s+.",
+		$info->{$_}{distro}{debian}, linkversion($_) for $vdebian;
+
+	my $nowcmp = $now->strftime('%F');
+	my $vdino = first { $info->{$_}{support} ge $nowcmp } sort keys %{$info};
+	say "Enterprise platforms retain versions up to $_."
+		for linkversion($vdino);
+	return 1;
+} or Alert('Missing version recommendations', $@);
 say '</p>';
 
 for my $vernum (reverse sort keys %{$info}) {
 	my $verrow = $info->{$vernum};
 	defined $verrow->{unstable} and next unless exists $get{v};
 
-	say '<div class="section">';
+	say sprintf '<div class="section" id="%s">', vname($vernum);
 	say sprintf '<h2>%vd <small>%s</small></h2>', $vernum, $verrow->{release};
 	say '<dl>';
 	for (@{ $verrow->{new} }) {
@@ -53,7 +82,7 @@ for my $vernum (reverse sort keys %{$info}) {
 			if ($attr->{feature}) {
 				my $prefix = sprintf '<span title="%s">feature</span>',
 					$attr->{feature};
-				my $title = join ', ', $prefix, $title // ();
+				$title = join ', ', $prefix, $title // ();
 			}
 			$desc .= sprintf ' <em class="ex">(%s)</em>', $title;
 		}