From 2a0b17e8c37b13b5af67cd03d99d70e26d4e5744 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sun, 19 Mar 2023 15:27:25 +0100
Subject: [PATCH] codec: page specific keywords from include data

---
 codec-audio.inc.pl |  1 +
 codec-image.inc.pl |  1 +
 codec.plp          | 18 ++++++++----------
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/codec-audio.inc.pl b/codec-audio.inc.pl
index 5844ea0..330f3b5 100644
--- a/codec-audio.inc.pl
+++ b/codec-audio.inc.pl
@@ -1,6 +1,7 @@
 use utf8;
 +{
 intro => 'Comparison of audio compression formats.',
+keywords => [qw( audio sound codec encoder encoding decode compression file format type mime )],
 codec => {
 	mp3 => {
 		name => '<abbr title="MPEG-1 Audio Layer III">MP3</abbr>',
diff --git a/codec-image.inc.pl b/codec-image.inc.pl
index f689142..6c138ab 100644
--- a/codec-image.inc.pl
+++ b/codec-image.inc.pl
@@ -1,6 +1,7 @@
 use utf8;
 +{
 intro => 'Comparison of image encoding formats, based on <a href="https://cloudinary.com/blog/one_pixel_is_worth_three_thousand_words">Cloudinary</a> research.',
+keywords => [qw( image picture codec encoder encoding decode compression file format type mime )],
 codec => {
 	jpeg => {
 		name => '<abbr title="Joint Photographic Experts Group">JPEG</abbr>',
diff --git a/codec.plp b/codec.plp
index 5c3e572..05fe30e 100644
--- a/codec.plp
+++ b/codec.plp
@@ -4,25 +4,23 @@ my ($page, @feat) = split m{/+}, $Request || 'image';
 $page !~ /\W/ or Html(), Abort('Invalid codec type request', 400);
 @feat or @feat = 'default';
 my $title = "$page codecs";
+my $info = eval { Data("codec-$page") };
+if ($@) {
+	$info = {};
+}
 
 Html({
 	title => "$title cheat sheet",
 	version => '1.0',
-	description => [
-	],
-	keywords => [qw'
-		codec encoder encoding decode file format type mime
-		feature comparison support benchmark compression
-		image audio video
-	'],
+	description => $info->{intro},
+	keywords => [@{ $info->{keywords} // [] }, qw' feature comparison support benchmark '],
 	stylesheet => [qw'light circus dark red'],
 	data => ["codec-$page.inc.pl"],
 	raw => '<style>td,th {width:8%} tbody th {white-space:nowrap}</style>',
 });
 
-my $info = Data("codec-$page");
-$info and %{$info} > 1
-	or Abort("Requested codec type <q>$page</q> not available", '404 request not found', $@ // $!);
+%{$info}
+	or Abort("Requested codec type <q>$page</q> not available", '404 request not found');
 
 say "<h1>\u$title</h1>";
 say "<p>$_</p>" for $info->{intro} // ();
-- 
2.30.0