X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/a0ba9298856b2426c5c66b6d2f2b284d98cee594..92884d838c7e5fc4b9bd27043bf6f1054898b182:/charset.plp diff --git a/charset.plp b/charset.plp index c9ef2b6..49ee2e7 100644 --- a/charset.plp +++ b/charset.plp @@ -1,185 +1,393 @@ +<(common.inc.plp)><: + +Html({ + title => 'charset cheat sheet', + version => '1.0', + description => [ + "Reference sheet with all glyphs in common character encoding tables,", + "and an overview of Unicode ranges and UTF-8 bytes.", + ], + keywords => [qw' + charset codepage unicode ascii utf8 latin glyph character encoding + reference common overview table + '], + stylesheet => [qw'light'], + data => [qw'charset-unicode.inc.pl charset-utf8.inc.pl'], +}); + +my @tablist = split /[^\w-]+/, $Request || 'default'; + +:> +
â±"; - print ' | ', $_ for @nibble; - print "\n"; + 'koi8-u' => ['koi8-r' => 128], + 'koi8-f' => ['koi8-u' => 128], + + 'MacRomanian' => ['MacRoman' => '160'], + 'MacCroatian' => ['MacRoman' => '160'], + 'MacCentralEurRoman' => ['MacRoman' => '128'], + 'MacTurkish' => ['MacRoman' => '208-223'], # F5 is unassigned + 'MacCyrillic' => ['MacRoman' => '128'], + 'MacHebrew' => ['MacRoman' => '128'], + }; + + my @parents = @{ $INHERIT->{$input} || [] }; + + if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) { + $row{parent} = $parent; + $params = $part; + $params = 128 unless $visible->{$parent} + or ($input eq 'MacCroatian' and defined $visible->{MacRomanian}); + } + elsif (defined $visible->{ascii}) { + $row{parent} = $parents[0]; + $params = $parents[1] || 128; + $params = 128 if $params >= 128; # ascii offset at most + } + elsif (@parents) { + $row{parent} = $parents[0]; + } + $visible->{$_} //= 0 for $row{parent}; } - print ' | |
---|---|---|
', $nibble[$msb]; - for my $lsb (0 .. $#nibble) { - my $glyph = substr $tables[$tablenum], ($msb<<4) + $lsb, 1; - if ($glyph eq $NOCHAR) { - print ' | ';
- next;
+
+ if (defined $params and $params =~ m/^ (\d+) (-\d+)? /x) {
+ $row{offset} = $1;
+ $endpoint = -$2 if $2;
+ }
+
+ if ($input =~ /^U([0-9a-f]+)(?:-([0-9a-f]+))?/) {
+ my $start = hex($1) << ($2 ? 4 : 8);
+ my $end = $2 ? hex($2) << 4 : $start + 240;
+ $row{table} = join '', map { chr } $start .. $end+15;
+ utf8::upgrade($row{table}); # prevent latin1 output
+ $row{len} = length $row{table};
+ $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
+ }
+ elsif ($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', $@ || $!);
+ $row{cols} *= 2;
+ }
+ elsif ($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', $@ || $!);
+ }
+ elsif ($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', $@ || $!);
+ }
+ else {
+ if ($row{set} eq 'MacHebrew') {
+ # array of possibly multiple characters per code point
+ $row{table} = [
+ map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $endpoint
+ ];
}
- my $info = [ord $glyph];
- if (defined (my $mnem = $di{ord $glyph})) {
- $info = $diinfo->{$mnem};
+ else {
+ # ~16x faster than decoding in loop;
+ # 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 - $row{offset};
+
+ if ($row{set} eq 'cp437' and !$row{offset}) {
+ substr($row{table}, 237, 1) = pack 'U*', 0x3D5; # phi sign
+ substr($row{table}, 0, 32) = pack 'U*', map {hex} qw(
+ 2007 263A 263B 2665 2666 2663 2660 2022
+ 25D8 25CB 25D9 2642 2640 266A 266B 263C
+ 25BA 25C4 2195 203C 00B6 00A7 25AC 21A8
+ 2191 2193 2192 2190 221F 2194 25B2 25BC
+ );
}
- my ($codepoint, $name, $prop, $script, $string) = @$info;
- $glyph = quote($string || $glyph);
- my $desc = sprintf 'U+%04X%s', $codepoint, $name && " ($name)";
- my @class = ('X', grep {$_} $prop, $script);
+ $visible->{ascii} = # assume common base
+ $visible->{ $row{set} } = 1;
+ }
+ }
+ else {
+ Alert("Encoding $inputunknown"); + return; + } + push @request, \%row; +} +tabinput($_) for @tablist; + +my $NOCHAR = chr 0xFFFD; - $glyph = "$glyph" if $prop eq 'Zs'; +sub range_cell { + my ($info, $offset) = @_; + my $table = $info->{cell} or return; + my $def = $table->{$offset} or return; + my ($len, $class, $name, $title) = @{$def}; - printf "\n".' | %s', - join(' ', @class), quote($desc), $glyph; + my $cols = $info->{cols}; + my $colsize = $table->{colsize} || 1; + my $attr = ''; + $len /= $colsize; + $name //= $len <= 2 ? 'res' : 'reserved'; + + if (my $part = $offset/$colsize % $cols) { + # continued row + my $rest = $cols - $part; # remaining + $rest = $len if $len < $rest; #TODO: optimise + if ($len -= $rest) { + # continued on new row + my @next = ($len * $colsize, "$class joinu"); + if ($len > $rest) { + # minority remains + push @next, $name, $title; + $title ||= $name; + $name = ''; + } + else { + # minority on next row + push @next, '"', $title || $name; + } + $table->{$offset + $colsize*$rest} //= \@next; + $class .= ' joind'; } - print "\n"; + $len = $rest; + } + elsif (my $rows = int($len / $cols)) { + # multiple full rows + if ($len -= $rows * $cols) { + # partial row remains + $table->{$offset + $colsize*$rows * $cols} //= [$len*$colsize, "$class joinu", '', $title]; + $class .= ' joind'; + } + $attr .= sprintf ' rowspan=%d', $rows; + $len = $cols; } - print " |
â±"; - print ' | ', $_ for @nibble; + print "<$section> | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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", $rowdiv == 1 ? '+' : 'â±'; + printf ' | %0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1; print "\n"; } print ' | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
', $nibble[$msb]; - for my $lsb (0 .. $#nibble) { - my $value = ($msb<<4) + $lsb; - if ($value <= 0x7F) { - print ' | Single byte ASCII' - if $value == 0; - } - elsif ($value <= 0xBF) { - print ' | Multi-byte continuation' - if $value == 0x80; - } - elsif ($value <= 0xC1) { - print ' | (Overl.)' - if $value == 0xC0; - } - elsif ($value <= 0xDF) { - print ' | 2-byte sequence start' - if $value == 0xC2; - print ' | ' - if $value == 0xD0; - } - elsif ($value <= 0xEF) { - print ' | 3-byte sequence start' - if $value == 0xE0; + while ($offset < $endpoint - 1) { + print ' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
'; + { + if (my $rowmod = $offset % $rowdiv) { + # offset in column units + printf '+%X', $rowmod; } - elsif ($value <= 0xF4) { - print ' | 4-byte sequence' - if $value == 0xF0; - } - elsif ($value <= 0xF7) { - print ' | (Overflow)' - if $value == 0xF5; - } - elsif ($value <= 0xFB) { - print ' | 5-byte' - if $value == 0xF8; + else { + # divided row offset + printf '%X', ($offset + $row->{offset}) / $rowdiv; } - elsif ($value <= 0xFD) { - print ' | 6-byte' - if $value == 0xFC; + } + for (1 .. $cols) { + if ($row->{cell}) { + print range_cell($row, $offset); + next; } - elsif ($value <= 0xFF) { - print ' | Invalid' - if $value == 0xFE; + + my $glyph = ref $row->{table} eq 'ARRAY' ? $row->{table}->[$offset] : + substr $row->{table}, $offset, 1; + if ($glyph eq $NOCHAR) { + print ' | '; + next; } - else { - print "\n".' | ?'; + + if (exists $get{compare}) { + state $visible = {}; + my $cp = $offset + $row->{offset}; + printf ' | %2$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 { + $offset += $colsize; } print "\n"; } - print " |
control + | whitespace + | diacritic
| punctuation
| symbol
| numeric + | greek
| aramaic
| syllabic
| alphabetic + |
unicode 7.0 + | proposed + | deprecated + | unassigned + | invalid + |