X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/4d0dfd97b2708e809741ad853bff0bd000fcbb33..77599c89c009e35136eb090114014b2d5ddcaea0:/font.plp

diff --git a/font.plp b/font.plp
index e0a9663..a039905 100644
--- a/font.plp
+++ b/font.plp
@@ -16,7 +16,18 @@ if (my $font = $ENV{PATH_INFO} =~ s{^/}{}r) {
 	my ($fontmeta, @cover) = do "ttfsupport/$font.inc.pl";
 	$fontmeta or die "Unknown font $font\n";
 
-	my $offset = $get{q} || 0;
+	require Unicode::UCD;
+
+	my $pagerows = 0x200;
+	my $pagecols = 32;
+	my $offset = eval {
+		local $_ = $get{q} || 0;
+		return $_ if /\A\d+\z/;  # numeric
+		return hex $1 if /\A (?: 0?x | u\W* ) ([0-9a-f]+) \z/ix;  # hexadecimal
+		return $_->[0]->[0] for Unicode::UCD::charblock(ucfirst) || ();  # block
+		die "Unknown offset query '$_'\n";
+	};
+	die $@ if $@;
 
 	say "<h1>Font coverage</h1>";
 	say "<h2>$_</h2>" for EscapeHTML($fontmeta->{name});
@@ -42,16 +53,43 @@ if (my $font = $ENV{PATH_INFO} =~ s{^/}{}r) {
 	say <<"EOT";
 
 <style>
-	.glyphs tbody th { text-align: right }
+	.glyphs tbody th[!colspan] { text-align: right }
 	.glyphs tbody td { font-family: "$fontmeta->{name}" }
 </style>
 EOT
 	say '<table class="glyphs big">';
-	for my $cp ($offset .. $offset+0x1FF) {
+
+	say "<caption>$_</caption>" for join(' ', grep {$_}
+		$offset > $pagerows && sprintf('<a rel="start" href="?q=%d">◄</a>', 0),
+		$offset > 0 && sprintf(
+			'<a rel="prev" href="?q=%d" title="U+%1$04X">◅</a>',
+			$offset - $pagerows,
+		),
+		sprintf('U+%04X', $offset),
+		Unicode::UCD::charblock($offset),
+		$offset + $pagerows < 0x11_0000 && sprintf(
+			'<a rel="next" href="?q=%d" title="U+%1$04X">▻</a>',
+			$offset + $pagerows,
+		),
+	);
+
+	for my $cp ($offset .. $offset+$pagerows-1) {
+		state $colpos;
+		my $block = Unicode::UCD::charblock($cp);
+		if ($block ne (state $sameblock = $block) and $block ne 'No_Block') {
+			print '<tbody>';
+			printf '<tr><th colspan=%d>%s', $pagecols+1, $block
+				unless $block eq 'No_Block';
+			say '';
+			$sameblock = $block;
+			$colpos = 0;
+		}
+
+		say sprintf '<tr><th>%X', $cp if $colpos++ % $pagecols == 0;
+
 		my $info = $glyphs->glyph_info($cp);
 		my ($class, $name, $mnem, $html, $string) = @{$info};
 		my $np = $class =~ /\bC\S\b/;  # noprint if control or invalid
-		say sprintf '<tr><th>%X', $cp if $cp % 32 == 0;
 		say sprintf '<td class="%s" title="U+%04X%s">%s',
 			!$class ? ('l0', $cp, '', '') :
 			$cover{$cp} ? $np ? 'l2' : 'l5' : $np ? 'Xi' : 'l1',