embed fonts in epub, stripped to used chars

[librarian.git] / font-optimizer / ext / Font-TTF / lib / Font / TTF / Fdsc.pm

diff --git a/font-optimizer/ext/Font-TTF/lib/Font/TTF/Fdsc.pm b/font-optimizer/ext/Font-TTF/lib/Font/TTF/Fdsc.pm
new file mode 100644 (file)
index 0000000..3a81a11
--- /dev/null
+++ b/font-optimizer/ext/Font-TTF/lib/Font/TTF/Fdsc.pm
@@ -0,0 +1,125 @@
+package Font::TTF::Fdsc;
+
+=head1 NAME
+
+Font::TTF::Fdsc - Font Descriptors table in a font
+
+=head1 DESCRIPTION
+
+=head1 INSTANCE VARIABLES
+
+=item version
+
+=item descriptors
+
+Hash keyed by descriptor tags
+
+=head1 METHODS
+
+=cut
+
+use strict;
+use vars qw(@ISA %fields);
+use Font::TTF::Utils;
+
+@ISA = qw(Font::TTF::Table);
+
+=head2 $t->read
+
+Reads the table into memory
+
+=cut
+
+sub read
+{
+    my ($self) = @_;
+    my ($dat, $fh, $numDescs, $tag, $descs);
+
+    $self->SUPER::read or return $self;
+
+    $fh = $self->{' INFILE'};
+    $fh->read($dat, 4);
+    $self->{'version'} = TTF_Unpack("v", $dat);
+
+    $fh->read($dat, 4);
+
+    foreach (1 .. unpack("N", $dat)) {
+        $fh->read($tag, 4);
+        $fh->read($dat, 4);
+        $descs->{$tag} = ($tag eq 'nalf') ? unpack("N", $dat) : TTF_Unpack("f", $dat);
+    }
+
+    $self->{'descriptors'} = $descs;
+
+    $self;
+}
+
+
+=head2 $t->out($fh)
+
+Writes the table to a file either from memory or by copying
+
+=cut
+
+sub out
+{
+    my ($self, $fh) = @_;
+    my ($descs);
+
+    return $self->SUPER::out($fh) unless $self->{' read'};
+    
+    $fh->print(TTF_Pack("v", $self->{'version'}));
+    
+    $descs = $self->{'descriptors'} or {};
+    
+    $fh->print(pack("N", scalar keys %$descs));    
+    foreach (sort keys %$descs) {
+        $fh->print($_);
+        $fh->print(($_ eq 'nalf') ? pack("N", $descs->{$_}) : TTF_Pack("f", $descs->{$_}));
+    }
+
+    $self;
+}
+
+=head2 $t->print($fh)
+
+Prints a human-readable representation of the table
+
+=cut
+
+sub print
+{
+    my ($self, $fh) = @_;
+    my ($descs, $k);
+
+    $self->read;
+
+    $fh = 'STDOUT' unless defined $fh;
+
+    $descs = $self->{'descriptors'};
+    foreach $k (sort keys %$descs) {
+        if ($k eq 'nalf') {
+            $fh->printf("Descriptor '%s' = %d\n", $k, $descs->{$k});
+        }
+        else {
+            $fh->printf("Descriptor '%s' = %f\n", $k, $descs->{$k});
+        }
+    }
+    
+    $self;
+}
+
+1;
+
+
+=head1 BUGS
+
+None known
+
+=head1 AUTHOR
+
+Jonathan Kew L<Jonathan_Kew@sil.org>. See L<Font::TTF::Font> for copyright and
+licensing.
+
+=cut
+