--- /dev/null
+package Font::TTF::Mort::Insertion;
+
+=head1 NAME
+
+Font::TTF::Mort::Insertion - Insertion Mort subtable for AAT
+
+=head1 METHODS
+
+=cut
+
+use strict;
+use vars qw(@ISA);
+use Font::TTF::Utils;
+use Font::TTF::AATutils;
+use IO::File;
+
+@ISA = qw(Font::TTF::Mort::Subtable);
+
+sub new
+{
+ my ($class, $direction, $orientation, $subFeatureFlags) = @_;
+ my ($self) = {
+ 'direction' => $direction,
+ 'orientation' => $orientation,
+ 'subFeatureFlags' => $subFeatureFlags
+ };
+
+ $class = ref($class) || $class;
+ bless $self, $class;
+}
+
+=head2 $t->read
+
+Reads the table into memory
+
+=cut
+
+sub read
+{
+ my ($self, $fh) = @_;
+ my ($dat);
+
+ my $subtableStart = $fh->tell();
+
+ my $stateTableStart = $fh->tell();
+ my ($classes, $states, $entries) = AAT_read_state_table($fh, 2);
+
+ my %insertListHash;
+ my $insertLists;
+ foreach (@$entries) {
+ my $flags = $_->{'flags'};
+ my @insertCount = (($flags & 0x03e0) >> 5, ($flags & 0x001f));
+ my $actions = $_->{'actions'};
+ foreach (0 .. 1) {
+ if ($insertCount[$_] > 0) {
+ $fh->seek($stateTableStart + $actions->[$_], IO::File::SEEK_SET);
+ $fh->read($dat, $insertCount[$_] * 2);
+ if (not defined $insertListHash{$dat}) {
+ push @$insertLists, [unpack("n*", $dat)];
+ $insertListHash{$dat} = $#$insertLists;
+ }
+ $actions->[$_] = $insertListHash{$dat};
+ }
+ else {
+ $actions->[$_] = undef;
+ }
+ }
+ }
+
+ $self->{'classes'} = $classes;
+ $self->{'states'} = $states;
+ $self->{'insertLists'} = $insertLists;
+
+ $self;
+}
+
+=head2 $t->pack_sub()
+
+=cut
+
+sub pack_sub
+{
+ my ($self) = @_;
+
+ my ($dat) = pack("nnnn", (0) x 4);
+
+ my $classTable = length($dat);
+ my $classes = $self->{'classes'};
+ $dat .= AAT_pack_classes($classes);
+
+ my $stateArray = length($dat);
+ my $states = $self->{'states'};
+ my ($dat1, $stateSize, $entries) = AAT_pack_states($classes, $stateArray, $states,
+ sub {
+ my $actions = $_->{'actions'};
+ ( $_->{'flags'}, @$actions )
+ }
+ );
+ $dat .= $dat1;
+
+ my $entryTable = length($dat);
+ my $offset = ($entryTable + 8 * @$entries);
+ my @insListOffsets;
+ my $insertLists = $self->{'insertLists'};
+ foreach (@$insertLists) {
+ push @insListOffsets, $offset;
+ $offset += 2 * scalar @$_;
+ }
+ foreach (@$entries) {
+ my ($nextState, $flags, @lists) = split /,/;
+ $flags &= ~0x03ff;
+ $flags |= (scalar @{$insertLists->[$lists[0]]}) << 5 if $lists[0] ne '';
+ $flags |= (scalar @{$insertLists->[$lists[1]]}) if $lists[1] ne '';
+ $dat .= pack("nnnn", $nextState, $flags,
+ map { $_ eq '' ? 0 : $insListOffsets[$_] } @lists);
+ }
+
+ foreach (@$insertLists) {
+ $dat .= pack("n*", @$_);
+ }
+
+ $dat1 = pack("nnnn", $stateSize, $classTable, $stateArray, $entryTable);
+ substr($dat, 0, length($dat1)) = $dat1;
+
+ return $dat;
+}
+
+=head2 $t->print($fh)
+
+Prints a human-readable representation of the table
+
+=cut
+
+sub print
+{
+ my ($self, $fh) = @_;
+
+ my $post = $self->post();
+
+ $fh = 'STDOUT' unless defined $fh;
+
+ $self->print_classes($fh);
+
+ $fh->print("\n");
+ my $states = $self->{'states'};
+ foreach (0 .. $#$states) {
+ $fh->printf("\t\tState %d:", $_);
+ my $state = $states->[$_];
+ foreach (@$state) {
+ my $flags;
+ $flags .= "!" if ($_->{'flags'} & 0x4000);
+ $flags .= "*" if ($_->{'flags'} & 0x8000);
+ my $actions = $_->{'actions'};
+ $fh->printf("\t(%s%d,%s,%s)", $flags, $_->{'nextState'}, map { defined $_ ? $_ : "=" } @$actions);
+ }
+ $fh->print("\n");
+ }
+
+ $fh->print("\n");
+ my $insertLists = $self->{'insertLists'};
+ foreach (0 .. $#$insertLists) {
+ my $insertList = $insertLists->[$_];
+ $fh->printf("\t\tList %d: %s\n", $_, join(", ", map { $_ . " [" . $post->{'VAL'}[$_] . "]" } @$insertList));
+ }
+}
+
+1;
+
+=head1 BUGS
+
+None known
+
+=head1 AUTHOR
+
+Jonathan Kew L<Jonathan_Kew@sil.org>. See L<Font::TTF::Font> for copyright and
+licensing.
+
+=cut
+