charset: compare option to indicate differences with parent

[sheet.git] / charset.plp

diff --git a/charset.plp b/charset.plp
index 9d7375d8c7fa5e05d11af279a47adc3057a9493e..49ee2e70df847938e92f1cd66f30a80de2f00d73 100644 (file)
--- a/charset.plp
+++ b/charset.plp
@@ -137,21 +137,21 @@ sub tabinput {
 
                my @parents = @{ $INHERIT->{$input} || [] };
 
-               if (my ($parent, $part) = pairfirst { exists $visible->{$a} } @parents) {
+               if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
                        $row{parent} = $parent;
                        $params = $part;
-                       $_ eq $part or $params = 128 for $visible->{$parent} // ();
+                       $params = 128 unless $visible->{$parent}
+                               or ($input eq 'MacCroatian' and defined $visible->{MacRomanian});
                }
-               elsif (exists $visible->{ascii}) {
+               elsif (defined $visible->{ascii}) {
                        $row{parent} = $parents[0];
                        $params = $parents[1] || 128;
-                       exists $visible->{$_} or $visible->{$_} = $params for $row{parent};
                        $params = 128 if $params >= 128;  # ascii offset at most
                }
                elsif (@parents) {
                        $row{parent} = $parents[0];
                }
-                       exists $visible->{$_} or $visible->{$_} = $params // 0 for $row{parent};
+               $visible->{$_} //= 0 for $row{parent};
        }
 
        if (defined $params and $params =~ m/^ (\d+) (-\d+)? /x) {
@@ -212,7 +212,7 @@ sub tabinput {
                        }
 
                        $visible->{ascii} =  # assume common base
-                       $visible->{ $row{set} } = undef;
+                       $visible->{ $row{set} } = 1;
                }
        }
        else {
@@ -323,6 +323,20 @@ 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 {