+ if (not defined $params) {
+ state $INHERIT = {
+ 'ascii' => ['' => '00-7F'],
+ 'cp437' => ['cp850' => 0, 'ascii' => '00-1F+80'], # ascii range overridden later
+ 'gsm0338' => ['ascii' => '00-7F'],
+ 'dingbats' => ['' => '20-7F+A0'],
+ 'MacDingbats' => ['dingbats' => '80-9F'],
+ 'AdobeZdingbat'=> ['MacDingbats' => '80-9F'], # should be identical but maps to private use
+ 'symbol' => ['' => '20-7F+A0'],
+ 'AdobeSymbol' => ['symbol' => '20-7F+A0', '' => '20-7F+A0'], # minor differences, irrelevant except for different '€'
+ 'wingdings' => ['' => '20'],
+ 'wingdings2' => ['' => '20'],
+ 'wingdings3' => ['' => '20'],
+ 'webdings' => ['' => '20'],
+
+ 'iso-8859-2' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-3' => ['iso-8859-1' => 'A0'], #TODO: also apply to iso-8859-9
+ 'iso-8859-4' => ['iso-8859-2' => 'A0'],
+ 'iso-8859-5' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-6' => ['cp1256' => '80', 'iso-8859-1' => 'A0'],
+ 'iso-8859-7' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-8' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-9' => ['iso-8859-1' => 'D0-DF+F0'],
+ 'iso-8859-10' => ['iso-8859-4' => 'A0'],
+ 'iso-8859-11' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-13' => ['iso-8859-4' => 'A0'],
+ 'iso-8859-14' => ['iso-8859-1' => 'A0'],
+ 'iso-8859-15' => ['iso-8859-1' => 'A0-BF'],
+ 'iso-8859-16' => ['iso-8859-2' => 'A0'],
+ 'hp-roman8' => ['iso-8859-1' => 'A0'],
+
+ 'cp1252' => ['iso-8859-1' => '80-9F'],
+ 'cp1250' => ['iso-8859-2' => '80-BF', 'cp1252' => '80'],
+ 'cp1254' => ['iso-8859-9' => '80-9F', 'cp1252' => '80-9F+D0'],
+ 'cp874' => ['iso-8859-11' => '80-9F', 'cp1252' => '80'], # windows-874 actually cp1162
+ 'cp1257' => ['iso-8859-13' => '80-9F+FF', 'cp1252' => '80'],
+ 'cp1251' => ['cp1252' => '80'],
+ 'cp1253' => ['cp1252' => '80'],
+ 'cp1255' => ['iso-8859-8' => '80-DF', 'cp1252' => '80'],
+ 'cp1256' => ['cp1252' => '80'],
+ 'cp1258' => ['cp1252' => '80-9F+C0'],
+
+ 'cp850' => ['cp437' => '90'],
+ 'cp860' => ['cp437' => '80-AF'],
+ 'cp861' => ['cp865' => '80-AF'],
+ 'cp863' => ['cp437' => '80-AF'],
+ 'cp865' => ['cp437' => '90-AF'],
+ 'cp852' => ['cp850' => '80', 'cp437' => '80'],
+ 'cp857' => ['cp850' => '80-AF+D0-EF', 'cp437' => '80'],
+ 'cp775' => ['cp850' => '80'], # partial cp437
+ 'cp866' => ['cp437' => '80-AF+E0'],
+ 'cp855' => ['cp437' => '80'],
+ 'cp1006' => ['iso-8859-6' => 'A0', 'cp437' => '80'],
+ 'cp737' => ['cp437' => '80-AF+E0'],
+ 'cp869' => ['cp437' => '80'],
+ 'cp862' => ['cp437' => '80-9F'],
+ 'cp864' => ['MacArabic' => '80', 'iso-8859-6' => '80', 'cp437' => '80'], #TODO: compare form variants
+
+ 'koi8-u' => ['koi8-r' => '90-BF'],
+ 'koi8-f' => ['koi8-u' => '90-BF'],
+
+ 'MacRomanian' => ['MacRoman' => 'A0-BF+D0-DF'],
+ 'MacRumanian' => ['MacRomanian' => 'A0-BF+D0-DF', 'MacRoman' => 'A0-BF+D0-DF'],
+ 'MacCroatian' => ['MacRoman' => 'A0'],
+ 'MacCentralEurRoman' => ['MacRoman' => '80'],
+ 'MacIcelandic'=> ['MacRoman' => 'A0-AF+D0-EF'],
+ 'MacTurkish' => ['MacRoman' => 'D0-DF'], # F5 is unassigned
+ 'MacSami' => ['MacIcelandic' => '90-BF+D0-DF+F0', 'MacRoman' => '90'],
+ 'MacGreek' => ['MacRoman' => '80'],
+ 'MacCyrillic' => ['MacRoman' => '80'],
+ 'MacHebrew' => ['iso-8859-8' => '80', 'MacRoman' => '80-8F+A0'], # partial ascii
+ 'MacArabic' => ['iso-8859-6' => '80', 'cp864' => '80', 'MacRoman' => '80'], #TODO: multiple parents
+ 'MacFarsi' => ['MacArabic' => 'B0-BF', 'MacRoman' => '80'],
+
+ 'cp37' => ['posix-bc' => '00'],
+ 'posix-bc' => ['cp1047' => '40'],
+ 'cp500' => ['cp37' => '40-5F+B0-BF'],
+ 'cp1047' => ['cp37' => '10-2F+50-5F+A0-BF'],
+ 'cp1026' => ['cp37' => '40'],
+ 'cp875' => ['cp37' => '30'],
+
+ };
+
+ my @parents = @{ $INHERIT->{$input} || [] };
+
+ if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
+ $row{parent} = $parent;
+ $params = $part;
+ $params = 80 unless $visible->{$parent}
+ or ($input eq 'MacCroatian' and defined $visible->{MacRomanian});
+ }
+ elsif (defined $visible->{ascii}) {
+ $row{parent} = $parents[0];
+ $params = $parents[1] // 80;
+ $params = 80 if hex $params >= 128; # ascii offset at most
+ }
+ elsif (@parents) {
+ $row{parent} = $parents[0];
+ $params = $parents[1] if hex $parents[1] == 0; # apply ascii end
+ }
+ $visible->{$_} //= 0 for $row{parent} || ();
+ }
+
+ for my $param (split /[+]+/, $params // '') {
+ if ($param eq 'realsize') {
+ $row{realsize}++;
+ }
+ elsif ($param =~ m{ \A cols = (\d+) \z }x) {
+ $row{cols} = $1;
+ }
+ elsif ($param =~ m{ \A (?<start> \p{AHex}+) (?: [-] (?<end> \p{AHex}+) )? \z }x) {
+ if (defined $row{endpoint}) {
+ # extend earlier range
+ my $skip = int(($row{endpoint} || $row{startpoint}) / $row{cols});
+ for ($skip + 1 .. (hex($+{start}) / $row{cols}) - 1) {
+ $row{skip}->{ $_ * $row{cols} - $row{startpoint} }++;
+ }
+ }
+ else {
+ $row{startpoint} = hex $+{start};
+ }
+ $row{endpoint} = hex($+{end} || 0);
+ }
+ else {
+ Alert("Unknown option <q>$param</q> for charset $input");
+ }