X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/4d0dfd97b2708e809741ad853bff0bd000fcbb33..25a210c5de3a4e164a39839dedeb997d56f31faf:/font.plp

diff --git a/font.plp b/font.plp
index e0a9663..8867921 100644
--- a/font.plp
+++ b/font.plp
@@ -16,7 +16,17 @@ 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 $size = 0x200;
+	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});
@@ -47,7 +57,19 @@ if (my $font = $ENV{PATH_INFO} =~ s{^/}{}r) {
 </style>
 EOT
 	say '<table class="glyphs big">';
-	for my $cp ($offset .. $offset+0x1FF) {
+	say "<caption>$_</caption>" for join(' ', grep {$_}
+		$offset > $size && sprintf('<a rel="start" href="?q=%d">◄</a>', 0),
+		$offset > 0 && sprintf(
+			'<a rel="prev" href="?q=%d" title="U+%1$04X">◅</a>',
+			$offset - $size,
+		),
+		sprintf('U+%04X', $offset), #TODO: block name
+		$offset + $size < 0x11_0000 && sprintf(
+			'<a rel="next" href="?q=%d" title="U+%1$04X">▻</a>',
+			$offset + $size,
+		),
+	);
+	for my $cp ($offset .. $offset+$size-1) {
 		my $info = $glyphs->glyph_info($cp);
 		my ($class, $name, $mnem, $html, $string) = @{$info};
 		my $np = $class =~ /\bC\S\b/;  # noprint if control or invalid