X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/ef7911fba9c330552599bc6eb9dc22606246dd7e..68b03397a0872d10d3627cea2b92ae36bd59183c:/font-optimizer/ext/Font-TTF/lib/Font/TTF/Post.pm

diff --git a/font-optimizer/ext/Font-TTF/lib/Font/TTF/Post.pm b/font-optimizer/ext/Font-TTF/lib/Font/TTF/Post.pm
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+package Font::TTF::Post;
+
+=head1 NAME
+
+Font::TTF::Post - Holds the Postscript names for each glyph
+
+=head1 DESCRIPTION
+
+Holds the postscript names for glyphs. Note that they are not held as an
+array, but as indexes into two lists. The first list is the standard Postscript
+name list defined by the TrueType standard. The second comes from the font
+directly.
+
+Looking up a glyph from a Postscript name or a name from a glyph number is
+achieved through methods rather than variable lookup.
+
+This class handles PostScript table types of 1, 2, 2.5 & 3, but not version 4.
+Support for version 2.5 is as per Apple spec rather than MS.
+
+The way to look up Postscript names or glyphs is:
+
+    $pname = $f->{'post'}{'VAL'}[$gnum];
+    $gnum = $f->{'post'}{'STRINGS'}{$pname};
+
+=head1 INSTANCE VARIABLES
+
+Due to different systems having different limitations, there are various class
+variables available to control what post table types can be written.
+
+=over 4
+
+=item $Font::TTF::Post::no25
+
+If set tells Font::TTF::Post::out to use table type 2 instead of 2.5 in case apps
+can't handle version 2.5.
+
+=item VAL
+
+Contains an array indexed by glyph number of Postscript names. This is used when
+writing out a font.
+
+=item STRINGS
+
+An associative array of Postscript names mapping to the highest glyph with that
+name. These may not be in sync with VAL.
+
+=back
+
+In addition there are the standard introductory variables defined in the
+standard:
+
+    FormatType
+    italicAngle
+    underlinePosition
+    underlineThickness
+    isFixedPitch
+    minMemType42
+    maxMemType42
+    minMemType1
+    maxMemType1
+
+=head1 METHODS
+
+=cut
+
+use strict;
+use vars qw(@ISA @base_set %base_set %fields $VERSION $no25 @field_info @base_set);
+require Font::TTF::Table;
+use Font::TTF::Utils;
+
+$no25 = 1;                  # officially deprecated format 2.5 tables in MS spec 1.3
+
+@ISA = qw(Font::TTF::Table);
+@field_info = (
+    'FormatType' => 'f',
+    'italicAngle' => 'f',
+    'underlinePosition' => 's',
+    'underlineThickness' => 's',
+    'isFixedPitch' => 'L',
+    'minMemType42' => 'L',
+    'maxMemType42' => 'L',
+    'minMemType1' => 'L',
+    'maxMemType1' => 'L');
+@base_set = qw(.notdef .null nonmarkingreturn space exclam quotedbl numbersign dollar percent ampersand quotesingle
+    parenleft parenright asterisk plus comma hyphen period slash zero one two three four five six
+    seven eight nine colon semicolon less equal greater question at A B C D E F G H I J K L M N O P Q
+    R S T U V W X Y Z bracketleft backslash bracketright asciicircum underscore grave a b c d e f g h
+    i j k l m n o p q r s t u v w x y z braceleft bar braceright asciitilde Adieresis Aring Ccedilla
+    Eacute Ntilde Odieresis Udieresis aacute agrave acircumflex adieresis atilde aring ccedilla eacute
+    egrave ecircumflex edieresis iacute igrave icircumflex idieresis ntilde oacute ograve ocircumflex
+    odieresis otilde uacute ugrave ucircumflex udieresis dagger degree cent sterling section bullet
+    paragraph germandbls registered copyright trademark acute dieresis notequal AE Oslash infinity
+    plusminus lessequal greaterequal yen mu partialdiff summation product pi integral ordfeminine
+    ordmasculine Omega ae oslash questiondown exclamdown logicalnot radical florin approxequal
+    Delta guillemotleft guillemotright ellipsis nonbreakingspace Agrave Atilde Otilde OE oe endash emdash
+    quotedblleft quotedblright quoteleft quoteright divide lozenge ydieresis Ydieresis fraction currency
+    guilsinglleft guilsinglright fi fl daggerdbl periodcentered quotesinglbase quotedblbase perthousand
+    Acircumflex Ecircumflex Aacute Edieresis Egrave Iacute Icircumflex Idieresis Igrave Oacute Ocircumflex
+    apple Ograve Uacute Ucircumflex Ugrave dotlessi circumflex tilde macron breve dotaccent
+    ring cedilla hungarumlaut ogonek caron Lslash lslash Scaron scaron Zcaron zcaron brokenbar Eth eth
+    Yacute yacute Thorn thorn minus multiply onesuperior twosuperior threesuperior onehalf onequarter
+    threequarters franc Gbreve gbreve Idotaccent Scedilla scedilla Cacute cacute Ccaron ccaron dcroat);
+
+$VERSION = 0.01;        # MJPH   5-AUG-1998     Re-organise data structures
+
+sub init
+{
+    my ($k, $v, $c, $i);
+    for ($i = 0; $i < $#field_info; $i += 2)
+    {
+        ($k, $v, $c) = TTF_Init_Fields($field_info[$i], $c, $field_info[$i + 1]);
+        next unless defined $k && $k ne "";
+        $fields{$k} = $v;
+    }
+    $i = 0;
+    %base_set = map {$_ => $i++} @base_set;
+}
+
+
+=head2 $t->read
+
+Reads the Postscript table into memory from disk
+
+=cut
+
+sub read
+{
+    my ($self) = @_;
+    my ($dat, $dat1, $i, $off, $c, $maxoff, $form, $angle, $numGlyphs);
+    my ($fh) = $self->{' INFILE'};
+
+    $numGlyphs = $self->{' PARENT'}{'maxp'}{'numGlyphs'};
+    $self->SUPER::read or return $self;
+    init unless ($fields{'FormatType'});
+    $fh->read($dat, 32);
+    TTF_Read_Fields($self, $dat, \%fields);
+
+    if (int($self->{'FormatType'} + .5) == 1)
+    {
+        for ($i = 0; $i < 258; $i++)
+        {
+            $self->{'VAL'}[$i] = $base_set[$i];
+            $self->{'STRINGS'}{$base_set[$i]} = $i unless (defined $self->{'STRINGS'}{$base_set[$i]});
+        }
+    } elsif (int($self->{'FormatType'} * 2 + .1) == 5)
+    {
+        $fh->read($dat, 2);
+        $numGlyphs = unpack("n", $dat);
+        $fh->read($dat, $numGlyphs);
+        for ($i = 0; $i < $numGlyphs; $i++)
+        {
+            $off = unpack("c", substr($dat, $i, 1));
+            $self->{'VAL'}[$i] = $base_set[$i + $off];
+            $self->{'STRINGS'}{$base_set[$i + $off]} = $i unless (defined $self->{'STRINGS'}{$base_set[$i + $off]});
+        }
+    } elsif (int($self->{'FormatType'} + .5) == 2)
+    {
+        my (@strings);
+        
+        $fh->read($dat, ($numGlyphs + 1) << 1);
+        for ($i = 0; $i < $numGlyphs; $i++)
+        {
+            $off = unpack("n", substr($dat, ($i + 1) << 1, 2));
+            $maxoff = $off if (!defined $maxoff || $off > $maxoff);
+        }
+        for ($i = 0; $i < $maxoff - 257; $i++)
+        {
+            $fh->read($dat1, 1);
+            $off = unpack("C", $dat1);
+            $fh->read($dat1, $off);
+            $strings[$i] = $dat1;
+        }
+        for ($i = 0; $i < $numGlyphs; $i++)
+        {
+            $off = unpack("n", substr($dat, ($i + 1) << 1, 2));
+            if ($off > 257)
+            {
+                $self->{'VAL'}[$i] = $strings[$off - 258];
+                $self->{'STRINGS'}{$strings[$off - 258]} = $i;
+            }
+            else
+            {
+                $self->{'VAL'}[$i] = $base_set[$off];
+                $self->{'STRINGS'}{$base_set[$off]} = $i unless (defined $self->{'STRINGS'}{$base_set[$off]});
+            }
+        }
+    }
+    $self;
+}
+
+
+=head2 $t->out($fh)
+
+Writes out a new Postscript name table from memory or copies from disk
+
+=cut
+
+sub out
+{
+    my ($self, $fh) = @_;
+    my ($i, $num);
+
+    return $self->SUPER::out($fh) unless $self->{' read'};
+
+    $num = $self->{' PARENT'}{'maxp'}{'numGlyphs'};
+
+    init unless ($fields{'FormatType'});
+
+    for ($i = $#{$self->{'VAL'}}; !defined $self->{'VAL'}[$i] && $i > 0; $i--)
+    { pop(@{$self->{'VAL'}}); }
+    if ($#{$self->{'VAL'}} < 0)
+    { $self->{'FormatType'} = 3; }
+    else
+    {
+        $self->{'FormatType'} = 1;
+        for ($i = 0; $i < $num; $i++)
+        {
+            if (!defined $base_set{$self->{'VAL'}[$i]})
+            {
+                $self->{'FormatType'} = 2;
+                last;
+            }
+            elsif ($base_set{$self->{'VAL'}[$i]} != $i)
+            { $self->{'FormatType'} = ($no25 ? 2 : 2.5); }
+        }
+    }
+
+    $fh->print(TTF_Out_Fields($self, \%fields, 32));
+
+    return $self if (int($self->{'FormatType'} + .4) == 3);
+
+    if (int($self->{'FormatType'} + .5) == 2)
+    {
+        my (@ind);
+        my ($count) = 0;
+        
+        $fh->print(pack("n", $num));
+        for ($i = 0; $i < $num; $i++)
+        {
+            if (defined $base_set{$self->{'VAL'}[$i]})
+            { $fh->print(pack("n", $base_set{$self->{'VAL'}[$i]})); }
+            else
+            {
+                $fh->print(pack("n", $count + 258));
+                $ind[$count++] = $i;
+            }
+        }
+        for ($i = 0; $i < $count; $i++)
+        {
+            $fh->print(pack("C", length($self->{'VAL'}[$ind[$i]])));
+            $fh->print($self->{'VAL'}[$ind[$i]]);
+        }
+    } elsif (int($self->{'FormatType'} * 2 + .5) == 5)
+    {
+        $fh->print(pack("n", $num));
+        for ($i = 0; $i < $num; $i++)
+        { $fh->print(pack("c", defined $base_set{$self->{'VAL'}[$i]} ?
+                    $base_set{$self->{'VAL'}[$i]} - $i : -$i)); }
+    }
+        
+    $self;
+}
+
+
+=head2 $t->XML_element($context, $depth, $key, $val)
+
+Outputs the names as one block of XML
+
+=cut
+
+sub XML_element
+{
+    my ($self) = shift;
+    my ($context, $depth, $key, $val) = @_;
+    my ($fh) = $context->{'fh'};
+    my ($i);
+
+    return $self->SUPER::XML_element(@_) unless ($key eq 'STRINGS' || $key eq 'VAL');
+    return unless ($key eq 'VAL');
+
+    $fh->print("$depth<names>\n");
+    for ($i = 0; $i <= $#{$self->{'VAL'}}; $i++)
+    { $fh->print("$depth$context->{'indent'}<name post='$self->{'VAL'}[$i]' gid='$i'/>\n"); }
+    $fh->print("$depth</names>\n");
+    $self;
+}
+
+1;
+
+=head1 BUGS
+
+=over 4
+
+=item *
+
+No support for type 4 tables
+
+=back
+
+=head1 AUTHOR
+
+Martin Hosken Martin_Hosken@sil.org. See L<Font::TTF::Font> for copyright and
+licensing.
+
+=cut
+