charset: double width option, improve ascii inheritance
[sheet.git] / charset.plp
index 9ee6d8604b47ab30746be5c28b154c550366e62c..b1c680e1d833f41b623b981e8b878854bab4866c 100644 (file)
@@ -15,7 +15,7 @@ Html({
        data => [qw'charset-unicode.inc.pl charset-utf8.inc.pl'],
 });
 
-my @tablist = split /[^\w-]+/, $Request || 'default';
+my @tablist = split m{/+}, $Request || 'default';
 
 :>
 <h1>Character encoding</h1>
@@ -31,27 +31,33 @@ sub tabinput {
        my $input = shift or return;
 
        state $ALIAS = {
-               default    => [qw( unicode+0-192 utf-8 iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
-               us         => [qw( cp437 cp863 AdobeStandardEncoding gsm0338 )],
-               ebcdic     => [qw( cp37 cp500 cp875 cp1026 cp1047 posix-bc )],
+               default    => [qw( unicode+0-639 utf-8 iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
+               us         => [qw( cp437 cp863 gsm0338 AdobeStandardEncoding )],
+               ebcdic     => [qw( cp37 cp500 cp1047 posix-bc cp1026 cp875 )],
                iso        => [map {"iso-8859-$_"} 1 .. 11, 13 .. 16],
                dos        => [qw( cp437 cp865 cp861 cp860 cp863 cp850 cp857 cp852 cp775
                                   cp737 cp869 cp866 cp855 cp862 cp864 )],
                aix        => [qw( cp1006 )],
                win        => [qw( cp1252 cp1250 cp1254 cp1257 cp1258 cp1253 cp1251 cp1255 cp1256 cp874 )],
+               mac        => [qw( MacRoman MacRomanian MacRumanian MacCroatian MacCentralEurRoman MacTurkish MacIcelandic MacSami
+                                  MacGreek MacCyrillic MacHebrew MacArabic MacFarsi MacThai )],
 
+               # languages
                westeur    => [qw( iso-8859-1 iso-8859-15 cp1252 iso-8859-14 cp850 hp-roman8 nextstep MacRoman )],
                centeur    => [qw( iso-8859-2 iso-8859-16 cp1250 cp852 MacRomanian MacCroatian MacCentralEurRoman )], # MacRumanian only for DB
                turkish    => [qw( iso-8859-9 iso-8859-3 cp1254 cp857 MacTurkish )],
                baltic     => [qw( iso-8859-4 iso-8859-13 cp1257 cp775 )],
                nordic     => [qw( iso-8859-10 cp865 cp861 MacIcelandic MacSami )],
-               cyrillic   => [qw( koi8-r koi8-u koi8-f iso-8859-5 cp1251 MacCyrillic cp866 cp855 )], # MacUkrainian is broken
-               arabic     => [qw( iso-8859-6 cp1006 cp864 cp1256 MacArabic )], # MacFarsi same as MacArabic?
-               greek      => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869 )],
-               hebrew     => [qw( iso-8859-8 cp1255 MacHebrew cp862 )],
+               cyrillic   => [qw( koi8-r koi8-u koi8-f iso-8859-5 cp1251 MacCyrillic cp866 cp855
+                                  U4 U2DE-2DF UA64-A69 U50-52 )], # MacUkrainian is broken
+               arabic     => [qw( iso-8859-6 cp1256 MacArabic cp864 cp1006 MacFarsi
+                                  U6 U8A-8F+0-31+64 U75-77 )],
+               greek      => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869  U37-3F U1F )],
+               hebrew     => [qw( iso-8859-8 cp1255 MacHebrew cp862  U59-5F )],
                thai       => [qw( iso-8859-11 cp874 MacThai )],
                vietnamese => [qw( viscii cp1258 MacVietnamese )],
                symbol     => [qw( symbol dingbats MacDingbats AdobeZdingbat AdobeSymbol )],
+
                # iso-code shorthand
                1 => 'westeur',
                2 => 'centeur',
@@ -79,17 +85,17 @@ sub tabinput {
                use List::Util qw( first pairfirst pairs );
 
                state $INHERIT = {
-                       'cp437'       => ['cp850' => 0], # ascii range overridden later
+                       'cp437'       => ['cp850' => 0, 'ascii' => '0-31+128'], # ascii range overridden later
                        'gsm0338'     => ['ascii' => '0-127'],
 
                        'iso-8859-2'  => ['iso-8859-1' => '160'],
-                       'iso-8859-3'  => ['iso-8859-1' => '160'],
+                       'iso-8859-3'  => ['iso-8859-1' => '160'], #TODO: also apply to iso-8859-9
                        'iso-8859-4'  => ['iso-8859-2' => '160'],
                        'iso-8859-5'  => ['iso-8859-1' => '160'],
-                       'iso-8859-6'  => ['iso-8859-1' => '160'],
+                       'iso-8859-6'  => ['cp1256' => '128', 'iso-8859-1' => '160'],
                        'iso-8859-7'  => ['iso-8859-1' => '160'],
                        'iso-8859-8'  => ['iso-8859-1' => '160'],
-                       'iso-8859-9'  => ['iso-8859-1' => '208'],
+                       'iso-8859-9'  => ['iso-8859-1' => '208-223+240'],
                        'iso-8859-10' => ['iso-8859-4' => '160'],
                        'iso-8859-11' => ['iso-8859-1' => '160'],
                        'iso-8859-13' => ['iso-8859-4' => '160'],
@@ -99,14 +105,15 @@ sub tabinput {
                        'hp-roman8'   => ['iso-8859-1' => '160'],
 
                        'cp1252'      => ['iso-8859-1' => '128-159'],
-                       'cp1250'      => ['iso-8859-2' => '128-191'],
-                       'cp1254'      => ['iso-8859-9' => '128-159'],
-                       'cp874'       => ['iso-8859-11' => '128-159'], # windows-874 actually cp1162
-                       'cp1257'      => ['iso-8859-13' => '128'],
+                       'cp1250'      => ['iso-8859-2' => '128-191', 'cp1252' => '128'],
+                       'cp1254'      => ['iso-8859-9' => '128-159', 'cp1252' => '128-159+208'],
+                       'cp874'       => ['iso-8859-11' => '128-159', 'cp1252' => '128'], # windows-874 actually cp1162
+                       'cp1257'      => ['iso-8859-13' => '128-159+255', 'cp1252' => '128'],
                        'cp1251'      => ['cp1252' => '128'],
                        'cp1253'      => ['cp1252' => '128'],
                        'cp1255'      => ['iso-8859-8' => '128-223', 'cp1252' => '128'],
                        'cp1256'      => ['cp1252' => '128'],
+                       'cp1258'      => ['cp1252' => '128-159+192'],
 
                        'cp850'       => ['cp437' => '144'],
                        'cp860'       => ['cp437' => '128-175'],
@@ -114,79 +121,116 @@ sub tabinput {
                        'cp863'       => ['cp437' => '128-175'],
                        'cp865'       => ['cp437' => '144-175'],
                        'cp852'       => ['cp850' => '128', 'cp437' => '128'],
-                       'cp857'       => ['cp850' => '128-239', 'cp437' => '128'],
+                       'cp857'       => ['cp850' => '128-175+208-239', 'cp437' => '128'],
                        'cp775'       => ['cp850' => '128'],  # partial cp437
-                       'cp866'       => ['cp437' => '128'],
+                       'cp866'       => ['cp437' => '128-175+224'],
                        'cp855'       => ['cp437' => '128'],
-                       'cp1006'      => ['cp437' => '128'],
-                       'cp737'       => ['cp437' => '128'],
+                       'cp1006'      => ['iso-8859-6' => '160', 'cp437' => '128'],
+                       'cp737'       => ['cp437' => '128-175+224'],
                        'cp869'       => ['cp437' => '128'],
-                       'cp862'       => ['cp437' => '128'],
-                       'cp864'       => ['cp437' => '128'],
+                       'cp862'       => ['cp437' => '128-159'],
+                       'cp864'       => ['MacArabic' => '128', 'iso-8859-6' => '128', 'cp437' => '128'], #TODO: compare form variants
 
                        'koi8-u'      => ['koi8-r' => 128],
                        'koi8-f'      => ['koi8-u' => 128],
 
-                       'MacRomanian' => ['MacRoman' => '160'],
+                       'MacRomanian' => ['MacRoman' => '160-191+208-223'],
+                       'MacRumanian' => ['MacRomanian' => '160-191+208-223', 'MacRoman' => '160-191+208-223'],
                        'MacCroatian' => ['MacRoman' => '160'],
                        'MacCentralEurRoman' => ['MacRoman' => '128'],
+                       'MacIcelandic'=> ['MacRoman' => '160-175+208-239'], #TODO: gaps at C/E
                        'MacTurkish'  => ['MacRoman' => '208-223'], # F5 is unassigned
+                       'MacSami'     => ['MacIcelandic' => '144', 'MacRoman' => '144'],
+                       'MacGreek'    => ['MacRoman' => '128'],
                        'MacCyrillic' => ['MacRoman' => '128'],
-                       'MacHebrew'   => ['MacRoman' => '128'],
+                       'MacHebrew'   => ['iso-8859-8' => '128', 'MacRoman' => '128-143+160'], # partial ascii
+                       'MacArabic'   => ['iso-8859-6' => '128', 'cp864' => '128', 'MacRoman' => '128'], #TODO: multiple parents
+                       'MacFarsi'    => ['MacArabic' => '176-191', 'MacRoman' => '128'],
+
+                       'cp37'        => ['posix-bc' => '0'],
+                       'posix-bc'    => ['cp1047' => '64'],
+                       'cp500'       => ['cp37' => '64-95+176-191'],
+                       'cp1047'      => ['cp37' => '16-95+160-191'], #TODO: gap at 3/4
+                       'cp1026'      => ['cp37' => '64'],
+                       'cp875'       => ['cp37' => '48'],
+
                };
 
                my @parents = @{ $INHERIT->{$input} || [] };
 
                if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
                        $row{parent} = $parent;
-                       $params = $visible->{$parent} ? $part : 128;
+                       $params = $part;
+                       $params = 128 unless $visible->{$parent}
+                               or ($input eq 'MacCroatian' and defined $visible->{MacRomanian});
                }
                elsif (defined $visible->{ascii}) {
-                       $row{parent} = $parents[0] || 'ascii';
-                       $params = $parents[1] || 128;
+                       $row{parent} = $parents[0];
+                       $params = $parents[1] // 128;
                        $params = 128 if $params >= 128;  # ascii offset at most
                }
                elsif (@parents) {
                        $row{parent} = $parents[0];
+                       $params = $parents[1] if $parents[1] == 0;  # apply ascii end
                }
-               $visible->{$_} //= 0 for $row{parent};
+               $visible->{$_} //= 0 for $row{parent} || ();
+       }
+       else {
+               # manual option to double table width
+               $row{cols} *= 2 if $params =~ s/[+]\z//;
        }
 
-       if (defined $params and $params =~ m/^ (\d+) (-\d+)? /x) {
-               $row{offset} = $1;
-               $endpoint = -$2 if $2;
+       if (length $params) {
+               $params =~ m{
+                       \A (?<offset> \d+)
+                       (?: (?: [-] (?<stop> \d+) )? (?: [+] (?<restart> \d+) ) )?
+                       (?: [-] (?<endpoint> \d+) )? \z
+               }x or Alert([
+                       "Unknown range parameters for $input",
+                       "<q>$params</q> is not in format start(-stop)(+restart(-end))",
+               ]);
+
+               $row{offset} = $+{offset};
+               $endpoint = $+{endpoint} if $+{endpoint};
+               if (my $restart = $+{restart}) {
+                       my $skip = int(($+{stop} || $row{offset}) / $row{cols});
+                       for ($skip + 1 .. ($restart / $row{cols}) - 1) {
+                               $row{skip}->{ $_ * $row{cols} - $row{offset} }++;
+                       }
+               }
        }
 
-       if ($input =~ /^U([0-9a-f]+)(?:-([0-9a-f]+))?/) {
+       if ($input =~ /^U([0-9a-fA-F]+)(?:-([0-9a-fA-F]+))?/) {
                my $start = hex($1) << ($2 ? 4 : 8);
-               my $end = $2 ? hex($2) << 4 : $start + 240;
-               $row{table} = join '', map { chr } $start .. $end+15;
+               my $end = $2 ? (hex($2) << 4) + $row{cols} - 1 : $start + 255;
+               $row{table} = join '', map { chr } $start .. $end;
                utf8::upgrade($row{table});  # prevent latin1 output
-               $row{len} = length $row{table};
+               $row{endpoint} = $end - $start;
                $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
+               $row{offset} = $start % 256;
        }
        elsif ($input eq 'U') {
-               $row{len} = 1024;
                $row{set} = 'Unicode planes';
                $row{cell} = do 'charset-ucplanes.inc.pl'
                        or Alert('Table data could not be read', $@ || $!);
                $row{cols} *= 2;
+               $row{endpoint} = 1023 * $row{cell}->{colsize};
        }
        elsif ($row{set} = Encode::resolve_alias($input)) {
                if ($row{set} eq 'Internal') {
-                       $row{len} = $endpoint < 255 ? 640 : 8192;
                        $row{set} = 'Unicode BMP';
                        $row{cell} = do 'charset-unicode.inc.pl'
                                or Alert('Table data could not be read', $@ || $!);
+                       $row{endpoint} = ($endpoint || 8191) * $row{cell}->{colsize};
                }
                elsif ($row{set} eq 'utf-8-strict') {
-                       $row{len} = 256;
                        $row{set} = 'UTF-8';
                        $row{cell} = do 'charset-utf8.inc.pl'
                                or Alert('Table data could not be read', $@ || $!);
+                       $row{endpoint} = 255;
                }
                else {
-                       if ($row{set} eq 'MacHebrew') {
+                       if ($row{set} eq 'MacHebrew' or $row{set} eq 'MacThai') {
                                # array of possibly multiple characters per code point
                                $row{table} = [
                                        map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $endpoint
@@ -197,7 +241,7 @@ sub tabinput {
                                # substr strings is twice as fast as splitting to an array
                                $row{table} = Encode::decode($row{set}, pack 'C*', $row{offset} .. $endpoint);
                        }
-                       $row{len} = $endpoint - $row{offset};
+                       $row{endpoint} = $endpoint - $row{offset};
 
                        if ($row{set} eq 'cp437' and !$row{offset}) {
                                substr($row{table}, 237, 1) = pack 'U*', 0x3D5; # phi sign
@@ -282,7 +326,6 @@ for my $row (@request) {
        my $rowdiv = 16 ** $coldigits;  # row divide for column digits
        $rowdiv = 1 if $rowdiv != $cols * $colsize;  # divide only if all columns are matched
        my $offset = 0;
-       my $endpoint = $offset + $row->{len} * $colsize;
 
        printf '<div class="section"><table class="glyphs%s">', !$row->{cell} && ' charmap';
        my $title = $row->{set};
@@ -296,7 +339,12 @@ for my $row (@request) {
                print "\n";
        }
        print '<tbody>';
-       while ($offset < $endpoint - 1) {
+       while ($offset < $row->{endpoint}) {
+               if ($row->{skip}->{$offset}) {
+                       $offset += $cols * $colsize;
+                       next;
+               }
+
                print '<tr><th>';
                {
                        if (my $rowmod = $offset % $rowdiv) {
@@ -321,6 +369,20 @@ for my $row (@request) {
                                next;
                        }
 
+                       if (exists $get{compare}) {
+                               state $visible = {};
+                               my $cp = $offset + $row->{offset};
+                               printf '<td class="%s" title="%3$s">%2$s',
+                                       $cp == ord $glyph ? 'l4' :
+                                       $row->{parent} && $glyph eq
+                                               Encode::decode($row->{parent}, pack 'C', $cp) ? 'l3' :
+                                       $visible->{$glyph} ? 'l2' :
+                                       'l1',
+                                       $glyphs->glyph_html($glyph);
+                               $visible->{$glyph}++;
+                               next;
+                       }
+
                        print "\n".$glyphs->glyph_cell($glyph);
                }
                continue {
@@ -335,7 +397,13 @@ for my $row (@request) {
 <hr>
 
 <div class="legend">
-       <table class="glyphs"><tr>
+       <table class="glyphs"><tr><: if (exists $get{compare}) { :>
+       <td class="X l4">unicode
+       <td class="X l3">inherited
+       <td class="X l2">existing
+       <td class="X l1">original
+       <td class="">unassigned
+<: } else { :>
        <td class="X Cc">control
        <td class="X Zs"><span>whitespace</span>
        <td class="X Mn">diacritic<table class="glyphs"><tr>
@@ -372,6 +440,6 @@ for my $row (@request) {
        <td class="X Xd">deprecated
        <td class="">unassigned
        <td class="X Xi">invalid
-       </table>
+<: } :>        </table>
 </div>