--- /dev/null
+package Font::TTF::AATutils;
+
+use strict;
+use vars qw(@ISA @EXPORT);
+require Exporter;
+
+use Font::TTF::Utils;
+use IO::File;
+
+@ISA = qw(Exporter);
+@EXPORT = qw(
+ AAT_read_lookup
+ AAT_pack_lookup
+ AAT_write_lookup
+ AAT_pack_classes
+ AAT_write_classes
+ AAT_pack_states
+ AAT_write_states
+ AAT_read_state_table
+ AAT_read_subtable
+ xmldump
+);
+
+sub xmldump
+{
+ my ($var, $links, $depth, $processedVars, $type) = @_;
+
+ $processedVars = {} unless (defined $processedVars);
+ print("<?xml version='1.0' encoding='UTF-8'?>\n") if $depth == 0; # not necessarily true encoding for all text!
+
+ my $indent = "\t" x $depth;
+
+ my ($objType, $addr) = ($var =~ m/^.+=(.+)\((.+)\)$/);
+ unless (defined $type) {
+ if (defined $addr) {
+ if (defined $processedVars->{$addr}) {
+ if ($links) {
+ printf("%s%s\n", $indent, "<a href=\"#$addr\">$objType</a>");
+ }
+ else {
+ printf("%s%s\n", $indent, "<a>$objType</a>");
+ }
+ return;
+ }
+ $processedVars->{$addr} = 1;
+ }
+ }
+
+ $type = ref $var unless defined $type;
+
+ if ($type eq 'REF') {
+ printf("%s<ref val=\"%s\"/>\n", $indent, $$var);
+ }
+ elsif ($type eq 'SCALAR') {
+ printf("%s<scalar>%s</scalar>\n", $indent, $var);
+ }
+ elsif ($type eq 'ARRAY') {
+ # printf("%s<array>\n", $indent);
+ foreach (0 .. $#$var) {
+ if (ref($var->[$_])) {
+ printf("%s<arrayItem index=\"%d\">\n", $indent, $_);
+ xmldump($var->[$_], $links, $depth + 1, $processedVars);
+ printf("%s</arrayItem>\n", $indent);
+ }
+ else {
+ printf("%s<arrayItem index=\"%d\">%s</arrayItem>\n", $indent, $_, $var->[$_]);
+ }
+ }
+ # printf("%s</array>\n", $indent);
+ }
+ elsif ($type eq 'HASH') {
+ # printf("%s<hash>\n", $indent);
+ foreach (sort keys %$var) {
+ if (ref($var->{$_})) {
+ printf("%s<hashElem key=\"%s\">\n", $indent, $_);
+ xmldump($var->{$_}, $links, $depth + 1, $processedVars);
+ printf("%s</hashElem>\n", $indent);
+ }
+ else {
+ printf("%s<hashElem key=\"%s\">%s</hashElem>\n", $indent, $_, $var->{$_});
+ }
+ }
+ # printf("%s</hash>\n", $indent);
+ }
+ elsif ($type eq 'CODE') {
+ printf("%s<CODE/>\n", $indent, $var);
+ }
+ elsif ($type eq 'GLOB') {
+ printf("%s<GLOB/>\n", $indent, $var);
+ }
+ elsif ($type eq '') {
+ printf("%s<val>%s</val>\n", $indent, $var);
+ }
+ else {
+ if ($links) {
+ printf("%s<obj class=\"%s\" id=\"#%s\">\n", $indent, $type, $addr);
+ }
+ else {
+ printf("%s<obj class=\"%s\">\n", $indent, $type);
+ }
+ xmldump($var, $links, $depth + 1, $processedVars, $objType);
+ printf("%s</obj>\n", $indent);
+ }
+}
+
+=head2 ($classes, $states) = AAT_read_subtable($fh, $baseOffset, $subtableStart, $limits)
+
+=cut
+
+sub AAT_read_subtable
+{
+ my ($fh, $baseOffset, $subtableStart, $limits) = @_;
+
+ my $limit = 0xffffffff;
+ foreach (@$limits) {
+ $limit = $_ if ($_ > $subtableStart and $_ < $limit);
+ }
+ die if $limit == 0xffffffff;
+
+ my $dat;
+ $fh->seek($baseOffset + $subtableStart, IO::File::SEEK_SET);
+ $fh->read($dat, $limit - $subtableStart);
+
+ $dat;
+}
+
+=head2 $length = AAT_write_state_table($fh, $classes, $states, $numExtraTables, $packEntry)
+
+$packEntry is a subroutine for packing an entry into binary form, called as
+
+$dat = $packEntry($entry, $entryTable, $numEntries)
+
+where the entry is a comma-separated list of nextStateOffset, flags, actions
+
+=cut
+
+sub AAT_pack_state_table
+{
+ my ($classes, $states, $numExtraTables, $packEntry) = @_;
+
+ my ($dat) = pack("n*", (0) x (4 + $numExtraTables)); # placeholders for stateSize, classTable, stateArray, entryTable
+
+ my ($firstGlyph, $lastGlyph) = (0xffff, 0, 0);
+ my (@classTable, $i);
+ foreach $i (0 .. $#$classes) {
+ my $class = $classes->[$i];
+ foreach (@$class) {
+ $firstGlyph = $_ if $_ < $firstGlyph;
+ $lastGlyph = $_ if $_ > $lastGlyph;
+ $classTable[$_] = $i;
+ }
+ }
+
+ my $classTable = length($dat);
+ $dat .= pack("nnC*", $firstGlyph, $lastGlyph - $firstGlyph + 1,
+ map { defined $classTable[$_] ? $classTable[$_] : 1 } ($firstGlyph .. $lastGlyph));
+ $dat .= pack("C", 0) if (($lastGlyph - $firstGlyph) & 1) == 0; # pad if odd number of glyphs
+
+ my $stateArray = length($dat);
+ my (@entries, %entries);
+ my $state = $states->[0];
+ my $stateSize = @$state;
+ die "stateSize below minimum allowed (4)" if $stateSize < 4;
+ die "stateSize (" . $stateSize . ") too small for max class number (" . $#$classes . ")" if $stateSize < $#$classes + 1;
+ warn "state array has unreachable columns" if $stateSize > $#$classes + 1;
+
+ foreach (@$states) {
+ die "inconsistent state size" if @$_ != $stateSize;
+ foreach (@$_) {
+ my $actions = $_->{'actions'};
+ my $entry = join(",", $stateArray + $_->{'nextState'} * $stateSize, $_->{'flags'}, ref($actions) eq 'ARRAY' ? @$actions : $actions);
+ if (not defined $entries{$entry}) {
+ push @entries, $entry;
+ $entries{$entry} = $#entries;
+ die "too many different state array entries" if $#entries == 256;
+ }
+ $dat .= pack("C", $entries{$entry});
+ }
+ }
+ $dat .= pack("C", 0) if (@$states & 1) != 0 and ($stateSize & 1) != 0; # pad if state array size is odd
+
+ my $entryTable = length($dat);
+ $dat .= map { &$packEntry($_, $entryTable, $#entries + 1) } @entries;
+
+ my ($dat1) = pack("nnnn", $stateSize, $classTable, $stateArray, $entryTable);
+ substr($dat, 0, length($dat1)) = $dat1;
+
+ return $dat;
+}
+
+sub AAT_write_state_table
+{
+ my ($fh, $classes, $states, $numExtraTables, $packEntry) = @_;
+
+ my $stateTableStart = $fh->tell();
+
+ $fh->print(pack("n*", (0) x (4 + $numExtraTables))); # placeholders for stateSize, classTable, stateArray, entryTable
+
+ my ($firstGlyph, $lastGlyph) = (0xffff, 0, 0);
+ my (@classTable, $i);
+ foreach $i (0 .. $#$classes) {
+ my $class = $classes->[$i];
+ foreach (@$class) {
+ $firstGlyph = $_ if $_ < $firstGlyph;
+ $lastGlyph = $_ if $_ > $lastGlyph;
+ $classTable[$_] = $i;
+ }
+ }
+
+ my $classTable = $fh->tell() - $stateTableStart;
+ $fh->print(pack("nnC*", $firstGlyph, $lastGlyph - $firstGlyph + 1,
+ map { defined $classTable[$_] ? $classTable[$_] : 1 } ($firstGlyph .. $lastGlyph)));
+ $fh->print(pack("C", 0)) if (($lastGlyph - $firstGlyph) & 1) == 0; # pad if odd number of glyphs
+
+ my $stateArray = $fh->tell() - $stateTableStart;
+ my (@entries, %entries);
+ my $state = $states->[0];
+ my $stateSize = @$state;
+ die "stateSize below minimum allowed (4)" if $stateSize < 4;
+ die "stateSize (" . $stateSize . ") too small for max class number (" . $#$classes . ")" if $stateSize < $#$classes + 1;
+ warn "state array has unreachable columns" if $stateSize > $#$classes + 1;
+
+ foreach (@$states) {
+ die "inconsistent state size" if @$_ != $stateSize;
+ foreach (@$_) {
+ my $actions = $_->{'actions'};
+ my $entry = join(",", $stateArray + $_->{'nextState'} * $stateSize, $_->{'flags'}, ref($actions) eq 'ARRAY' ? @$actions : $actions);
+ if (not defined $entries{$entry}) {
+ push @entries, $entry;
+ $entries{$entry} = $#entries;
+ die "too many different state array entries" if $#entries == 256;
+ }
+ $fh->print(pack("C", $entries{$entry}));
+ }
+ }
+ $fh->print(pack("C", 0)) if (@$states & 1) != 0 and ($stateSize & 1) != 0; # pad if state array size is odd
+
+ my $entryTable = $fh->tell() - $stateTableStart;
+ $fh->print(map { &$packEntry($_, $entryTable, $#entries + 1) } @entries);
+
+ my $length = $fh->tell() - $stateTableStart;
+ $fh->seek($stateTableStart, IO::File::SEEK_SET);
+ $fh->print(pack("nnnn", $stateSize, $classTable, $stateArray, $entryTable));
+
+ $fh->seek($stateTableStart + $length, IO::File::SEEK_SET);
+ $length;
+}
+
+sub AAT_pack_classes
+{
+ my ($classes) = @_;
+
+ my ($firstGlyph, $lastGlyph) = (0xffff, 0, 0);
+ my (@classTable, $i);
+ foreach $i (0 .. $#$classes) {
+ my $class = $classes->[$i];
+ foreach (@$class) {
+ $firstGlyph = $_ if $_ < $firstGlyph;
+ $lastGlyph = $_ if $_ > $lastGlyph;
+ $classTable[$_] = $i;
+ }
+ }
+
+ my ($dat) = pack("nnC*", $firstGlyph, $lastGlyph - $firstGlyph + 1,
+ map { defined $classTable[$_] ? $classTable[$_] : 1 } ($firstGlyph .. $lastGlyph));
+ $dat .= pack("C", 0) if (($lastGlyph - $firstGlyph) & 1) == 0; # pad if odd number of glyphs
+
+ return $dat;
+}
+
+sub AAT_write_classes
+{
+ my ($fh, $classes) = @_;
+
+ $fh->print(AAT_pack_classes($fh, $classes));
+}
+
+sub AAT_pack_states
+{
+ my ($classes, $stateArray, $states, $buildEntryProc) = @_;
+
+ my ($entries, %entryHash);
+ my $state = $states->[0];
+ my $stateSize = @$state;
+
+ die "stateSize below minimum allowed (4)" if $stateSize < 4;
+ die "stateSize (" . $stateSize . ") too small for max class number (" . $#$classes . ")" if $stateSize < $#$classes + 1;
+ warn "state array has unreachable columns" if $stateSize > $#$classes + 1;
+
+ my ($dat);
+ foreach (@$states) {
+ die "inconsistent state size" if @$_ != $stateSize;
+ foreach (@$_) {
+ my $entry = join(",", $stateArray + $_->{'nextState'} * $stateSize, &$buildEntryProc($_));
+ if (not defined $entryHash{$entry}) {
+ push @$entries, $entry;
+ $entryHash{$entry} = $#$entries;
+ die "too many different state array entries" if $#$entries == 256;
+ }
+ $dat .= pack("C", $entryHash{$entry});
+ }
+ }
+ $dat .= pack("C", 0) if (@$states & 1) != 0 and ($stateSize & 1) != 0; # pad if state array size is odd
+
+ ($dat, $stateSize, $entries);
+}
+
+sub AAT_write_states
+{
+ my ($fh, $classes, $stateArray, $states, $buildEntryProc) = @_;
+
+ my ($entries, %entryHash);
+ my $state = $states->[0];
+ my $stateSize = @$state;
+
+ die "stateSize below minimum allowed (4)" if $stateSize < 4;
+ die "stateSize (" . $stateSize . ") too small for max class number (" . $#$classes . ")" if $stateSize < $#$classes + 1;
+ warn "state array has unreachable columns" if $stateSize > $#$classes + 1;
+
+ foreach (@$states) {
+ die "inconsistent state size" if @$_ != $stateSize;
+ foreach (@$_) {
+ my $entry = join(",", $stateArray + $_->{'nextState'} * $stateSize, &$buildEntryProc($_));
+ if (not defined $entryHash{$entry}) {
+ push @$entries, $entry;
+ $entryHash{$entry} = $#$entries;
+ die "too many different state array entries" if $#$entries == 256;
+ }
+ $fh->print(pack("C", $entryHash{$entry}));
+ }
+ }
+ $fh->print(pack("C", 0)) if (@$states & 1) != 0 and ($stateSize & 1) != 0; # pad if state array size is odd
+
+ ($stateSize, $entries);
+}
+
+=head2 ($classes, $states, $entries) = AAT_read_state_table($fh, $numActionWords)
+
+=cut
+
+sub AAT_read_state_table
+{
+ my ($fh, $numActionWords) = @_;
+
+ my $stateTableStart = $fh->tell();
+ my $dat;
+ $fh->read($dat, 8);
+ my ($stateSize, $classTable, $stateArray, $entryTable) = unpack("nnnn", $dat);
+
+ my $classes; # array of lists of glyphs
+
+ $fh->seek($stateTableStart + $classTable, IO::File::SEEK_SET);
+ $fh->read($dat, 4);
+ my ($firstGlyph, $nGlyphs) = unpack("nn", $dat);
+ $fh->read($dat, $nGlyphs);
+ foreach (unpack("C*", $dat)) {
+ if ($_ != 1) {
+ my $class = $classes->[$_];
+ push(@$class, $firstGlyph);
+ $classes->[$_] = $class unless defined $classes->[$_];
+ }
+ $firstGlyph++;
+ }
+
+ $fh->seek($stateTableStart + $stateArray, IO::File::SEEK_SET);
+ my $states; # array of arrays of hashes{nextState, flags, actions}
+
+ my $entrySize = 4 + ($numActionWords * 2);
+ my $lastState = 1;
+ my $entries;
+ while ($#$states < $lastState) {
+ $fh->read($dat, $stateSize);
+ my @stateEntries = unpack("C*", $dat);
+ my $state;
+ foreach (@stateEntries) {
+ if (not defined $entries->[$_]) {
+ my $loc = $fh->tell();
+ $fh->seek($stateTableStart + $entryTable + ($_ * $entrySize), IO::File::SEEK_SET);
+ $fh->read($dat, $entrySize);
+ my ($nextState, $flags, $actions);
+ ($nextState, $flags, @$actions) = unpack("n*", $dat);
+ $nextState -= $stateArray;
+ $nextState /= $stateSize;
+ $entries->[$_] = { 'nextState' => $nextState, 'flags' => $flags };
+ $entries->[$_]->{'actions'} = $actions if $numActionWords > 0;
+ $lastState = $nextState if ($nextState > $lastState);
+ $fh->seek($loc, IO::File::SEEK_SET);
+ }
+ push(@$state, $entries->[$_]);
+ }
+ push(@$states, $state);
+ }
+
+ ($classes, $states, $entries);
+}
+
+=head2 ($format, $lookup) = AAT_read_lookup($fh, $valueSize, $length, $default)
+
+=cut
+
+sub AAT_read_lookup
+{
+ my ($fh, $valueSize, $length, $default) = @_;
+
+ my $lookupStart = $fh->tell();
+ my ($dat, $unpackChar);
+ if ($valueSize == 1) {
+ $unpackChar = "C";
+ }
+ elsif ($valueSize == 2) {
+ $unpackChar = "n";
+ }
+ elsif ($valueSize == 4) {
+ $unpackChar = "N";
+ }
+ else {
+ die "unsupported value size";
+ }
+
+ $fh->read($dat, 2);
+ my $format = unpack("n", $dat);
+ my $lookup;
+
+ if ($format == 0) {
+ $fh->read($dat, $length - 2);
+ my $i = -1;
+ $lookup = { map { $i++; ($_ != $default) ? ($i, $_) : () } unpack($unpackChar . "*", $dat) };
+ }
+
+ elsif ($format == 2) {
+ $fh->read($dat, 10);
+ my ($unitSize, $nUnits, $searchRange, $entrySelector, $rangeShift) = unpack("nnnnn", $dat);
+ die if $unitSize != 4 + $valueSize;
+ foreach (1 .. $nUnits) {
+ $fh->read($dat, $unitSize);
+ my ($lastGlyph, $firstGlyph, $value) = unpack("nn" . $unpackChar, $dat);
+ if ($firstGlyph != 0xffff and $value != $default) {
+ foreach ($firstGlyph .. $lastGlyph) {
+ $lookup->{$_} = $value;
+ }
+ }
+ }
+ }
+
+ elsif ($format == 4) {
+ $fh->read($dat, 10);
+ my ($unitSize, $nUnits, $searchRange, $entrySelector, $rangeShift) = unpack("nnnnn", $dat);
+ die if $unitSize != 6;
+ foreach (1 .. $nUnits) {
+ $fh->read($dat, $unitSize);
+ my ($lastGlyph, $firstGlyph, $offset) = unpack("nnn", $dat);
+ if ($firstGlyph != 0xffff) {
+ my $loc = $fh->tell();
+ $fh->seek($lookupStart + $offset, IO::File::SEEK_SET);
+ $fh->read($dat, ($lastGlyph - $firstGlyph + 1) * $valueSize);
+ my @values = unpack($unpackChar . "*", $dat);
+ foreach (0 .. $lastGlyph - $firstGlyph) {
+ $lookup->{$firstGlyph + $_} = $values[$_] if $values[$_] != $default;
+ }
+ $fh->seek($loc, IO::File::SEEK_SET);
+ }
+ }
+ }
+
+ elsif ($format == 6) {
+ $fh->read($dat, 10);
+ my ($unitSize, $nUnits, $searchRange, $entrySelector, $rangeShift) = unpack("nnnnn", $dat);
+ die if $unitSize != 2 + $valueSize;
+ foreach (1 .. $nUnits) {
+ $fh->read($dat, $unitSize);
+ my ($glyph, $value) = unpack("n" . $unpackChar, $dat);
+ $lookup->{$glyph} = $value if $glyph != 0xffff and $value != $default;
+ }
+ }
+
+ elsif ($format == 8) {
+ $fh->read($dat, 4);
+ my ($firstGlyph, $glyphCount) = unpack("nn", $dat);
+ $fh->read($dat, $glyphCount * $valueSize);
+ $firstGlyph--;
+ $lookup = { map { $firstGlyph++; $_ != $default ? ($firstGlyph, $_) : () } unpack($unpackChar . "*", $dat) };
+ }
+
+ else {
+ die "unknown lookup format";
+ }
+
+ $fh->seek($lookupStart + $length, IO::File::SEEK_SET);
+
+ ($format, $lookup);
+}
+
+=head2 AAT_write_lookup($fh, $format, $lookup, $valueSize, $default)
+
+=cut
+
+sub AAT_pack_lookup
+{
+ my ($format, $lookup, $valueSize, $default) = @_;
+
+ my $packChar;
+ if ($valueSize == 1) {
+ $packChar = "C";
+ }
+ elsif ($valueSize == 2) {
+ $packChar = "n";
+ }
+ elsif ($valueSize == 4) {
+ $packChar = "N";
+ }
+ else {
+ die "unsupported value size";
+ }
+
+ my ($dat) = pack("n", $format);
+
+ my ($firstGlyph, $lastGlyph) = (0xffff, 0);
+ foreach (keys %$lookup) {
+ $firstGlyph = $_ if $_ < $firstGlyph;
+ $lastGlyph = $_ if $_ > $lastGlyph;
+ }
+ my $glyphCount = $lastGlyph - $firstGlyph + 1;
+
+ if ($format == 0) {
+ $dat .= pack($packChar . "*", map { defined $lookup->{$_} ? $lookup->{$_} : defined $default ? $default : $_ } (0 .. $lastGlyph));
+ }
+
+ elsif ($format == 2) {
+ my $prev = $default;
+ my $segStart = $firstGlyph;
+ my $dat1;
+ foreach ($firstGlyph .. $lastGlyph + 1) {
+ my $val = $lookup->{$_};
+ $val = $default unless defined $val;
+ if ($val != $prev) {
+ $dat1 .= pack("nn" . $packChar, $_ - 1, $segStart, $prev) if $prev != $default;
+ $prev = $val;
+ $segStart = $_;
+ }
+ }
+ $dat1 .= pack("nn" . $packChar, 0xffff, 0xffff, 0);
+ my $unitSize = 4 + $valueSize;
+ $dat .= pack("nnnnn", $unitSize, TTF_bininfo(length($dat1) / $unitSize, $unitSize));
+ $dat .= $dat1;
+ }
+
+ elsif ($format == 4) {
+ my $segArray = new Font::TTF::Segarr($valueSize);
+ $segArray->add_segment($firstGlyph, 1, map { $lookup->{$_} } ($firstGlyph .. $lastGlyph));
+ my ($start, $end, $offset);
+ $offset = 12 + @$segArray * 6 + 6; # 12 is size of format word + binSearchHeader; 6 bytes per segment; 6 for terminating segment
+ my $dat1;
+ foreach (@$segArray) {
+ $start = $_->{'START'};
+ $end = $start + $_->{'LEN'} - 1;
+ $dat1 .= pack("nnn", $end, $start, $offset);
+ $offset += $_->{'LEN'} * 2;
+ }
+ $dat1 .= pack("nnn", 0xffff, 0xffff, 0);
+ $dat .= pack("nnnnn", 6, TTF_bininfo(length($dat1) / 6, 6));
+ $dat .= $dat1;
+ foreach (@$segArray) {
+ $dat1 = $_->{'VAL'};
+ $dat .= pack($packChar . "*", @$dat1);
+ }
+ }
+
+ elsif ($format == 6) {
+ die "unsupported" if $valueSize != 2;
+ my $dat1 = pack("n*", map { $_, $lookup->{$_} } sort { $a <=> $b } grep { $lookup->{$_} ne $default } keys %$lookup);
+ my $unitSize = 2 + $valueSize;
+ $dat .= pack("nnnnn", $unitSize, TTF_bininfo(length($dat1) / $unitSize, $unitSize));
+ $dat .= $dat1;
+ }
+
+ elsif ($format == 8) {
+ $dat .= pack("nn", $firstGlyph, $lastGlyph - $firstGlyph + 1);
+ $dat .= pack($packChar . "*", map { defined $lookup->{$_} ? $lookup->{$_} : defined $default ? $default : $_ } ($firstGlyph .. $lastGlyph));
+ }
+
+ else {
+ die "unknown lookup format";
+ }
+
+ my $padBytes = (4 - (length($dat) & 3)) & 3;
+ $dat .= pack("C*", (0) x $padBytes);
+
+ return $dat;
+}
+
+sub AAT_write_lookup
+{
+ my ($fh, $format, $lookup, $valueSize, $default) = @_;
+
+ my $lookupStart = $fh->tell();
+ my $packChar;
+ if ($valueSize == 1) {
+ $packChar = "C";
+ }
+ elsif ($valueSize == 2) {
+ $packChar = "n";
+ }
+ elsif ($valueSize == 4) {
+ $packChar = "N";
+ }
+ else {
+ die "unsupported value size";
+ }
+
+ $fh->print(pack("n", $format));
+
+ my ($firstGlyph, $lastGlyph) = (0xffff, 0);
+ foreach (keys %$lookup) {
+ $firstGlyph = $_ if $_ < $firstGlyph;
+ $lastGlyph = $_ if $_ > $lastGlyph;
+ }
+ my $glyphCount = $lastGlyph - $firstGlyph + 1;
+
+ if ($format == 0) {
+ $fh->print(pack($packChar . "*", map { defined $lookup->{$_} ? $lookup->{$_} : defined $default ? $default : $_ } (0 .. $lastGlyph)));
+ }
+
+ elsif ($format == 2) {
+ my $prev = $default;
+ my $segStart = $firstGlyph;
+ my $dat;
+ foreach ($firstGlyph .. $lastGlyph + 1) {
+ my $val = $lookup->{$_};
+ $val = $default unless defined $val;
+ if ($val != $prev) {
+ $dat .= pack("nn" . $packChar, $_ - 1, $segStart, $prev) if $prev != $default;
+ $prev = $val;
+ $segStart = $_;
+ }
+ }
+ $dat .= pack("nn" . $packChar, 0xffff, 0xffff, 0);
+ my $unitSize = 4 + $valueSize;
+ $fh->print(pack("nnnnn", $unitSize, TTF_bininfo(length($dat) / $unitSize, $unitSize)));
+ $fh->print($dat);
+ }
+
+ elsif ($format == 4) {
+ my $segArray = new Font::TTF::Segarr($valueSize);
+ $segArray->add_segment($firstGlyph, 1, map { $lookup->{$_} } ($firstGlyph .. $lastGlyph));
+ my ($start, $end, $offset);
+ $offset = 12 + @$segArray * 6 + 6; # 12 is size of format word + binSearchHeader; 6 bytes per segment; 6 for terminating segment
+ my $dat;
+ foreach (@$segArray) {
+ $start = $_->{'START'};
+ $end = $start + $_->{'LEN'} - 1;
+ $dat .= pack("nnn", $end, $start, $offset);
+ $offset += $_->{'LEN'} * 2;
+ }
+ $dat .= pack("nnn", 0xffff, 0xffff, 0);
+ $fh->print(pack("nnnnn", 6, TTF_bininfo(length($dat) / 6, 6)));
+ $fh->print($dat);
+ foreach (@$segArray) {
+ $dat = $_->{'VAL'};
+ $fh->print(pack($packChar . "*", @$dat));
+ }
+ }
+
+ elsif ($format == 6) {
+ die "unsupported" if $valueSize != 2;
+ my $dat = pack("n*", map { $_, $lookup->{$_} } sort { $a <=> $b } grep { $lookup->{$_} ne $default } keys %$lookup);
+ my $unitSize = 2 + $valueSize;
+ $fh->print(pack("nnnnn", $unitSize, TTF_bininfo(length($dat) / $unitSize, $unitSize)));
+ $fh->print($dat);
+ }
+
+ elsif ($format == 8) {
+ $fh->print(pack("nn", $firstGlyph, $lastGlyph - $firstGlyph + 1));
+ $fh->print(pack($packChar . "*", map { defined $lookup->{$_} ? $lookup->{$_} : defined $default ? $default : $_ } ($firstGlyph .. $lastGlyph)));
+ }
+
+ else {
+ die "unknown lookup format";
+ }
+
+ my $length = $fh->tell() - $lookupStart;
+ my $padBytes = (4 - ($length & 3)) & 3;
+ $fh->print(pack("C*", (0) x $padBytes));
+ $length += $padBytes;
+
+ $length;
+}
+
+1;
+
fnp / librarian.git / blobdiff