(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';
:>
Character encoding
<:
use POSIX qw( ceil );
use Shiar_Sheet::FormatChar;
my $glyphs = Shiar_Sheet::FormatChar->new;
sub tabinput {
# generate character table(s)
my $input = shift or return;
state $ALIAS = {
default => [qw(unicode- utf-8 iso-8859-1 -cp1252-- --iso-8859-15-- cp437 -cp850)],
us => [qw( cp437 -cp863 AdobeStandardEncoding gsm0338-- )],
ebcdic => [qw( cp37 cp500 cp875 cp1026 cp1047 posix-bc )],
westeur => [qw( iso-8859-1 --iso-8859-15-- -cp1252-- --iso-8859-14 -cp850 -MacRoman -nextstep --hp-roman8 )],
centeur => [qw( iso-8859-2 --iso-8859-16 -cp1250 -cp852 -MacCentralEurRoman -MacCroatian -MacRomanian )], # MacRumanian only for DB
turkish => [qw( iso-8859-3 -iso-8859-9 -cp857 -cp1254 -MacTurkish )],
baltic => [qw( iso-8859-4 --iso-8859-13 -cp775 -cp1257 )],
nordic => [qw( iso-8859-10 -cp865 --cp861-- -MacIcelandic --MacSami )],
cyrillic => [qw( koi8-f -koi8-r- --koi8-u- -iso-8859-5 -cp1251 -MacCyrillic -cp855 -cp866 )], # 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 )],
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',
3 => 'turkish',
4 => 'baltic',
5 => 'cyrillic',
6 => 'arabic',
7 => 'greek',
8 => 'hebrew',
9 => 'turkish',
10 => 'nordic',
11 => 'thai',
};
if (my $follow = $ALIAS->{$input}) {
return map { tabinput($_) } ref $follow ? @{$follow} : $follow;
}
my %row = (offset => 0, cols => 16);
my $endpoint = 255;
if ($input =~ s/^--//) {
$row{offset} = $endpoint > 160 ? 160 : 48;
}
elsif ($input =~ s/^-//) {
$row{offset} = $endpoint > 128 ? 128 : 32;
}
if ($input =~ s/--$//) {
$endpoint = $row{offset} ? $row{offset} < 160 ? 159 : 191 : 127;
}
elsif ($input =~ s/-$//) {
$endpoint = 192;
}
if ($row{offset}) {
$row{setnote} = 'over cp437' if $input eq 'cp850';
$row{setnote} = 'over iso-8859-1' if $input =~ /^iso-8859-|^cp125/;
}
if ($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{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
}
elsif ($input eq 'U') {
$row{table} = ' ' x 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') {
$row{table} = ' ' x ($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{table} = undef;
$row{set} = 'UTF-8';
$row{cell} = do 'charset-utf8.inc.pl'
or Alert('Table data could not be read', $@ || $!);
}
else {
$row{table} = Encode::decode($row{set}, pack 'C*', $row{offset} .. $endpoint);
# (~16x faster than decoding in loop;
# substr strings is twice as fast as splitting to an array)
if ($row{set} eq 'cp437') {
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
);
}
}
}
else {
Alert("Encoding $input
unknown");
return;
}
return \%row;
}
my @request = map { tabinput($_) } @tablist;
my $NOCHAR = chr 0xFFFD;
sub range_cell {
my ($info, $offset) = @_;
my $table = $info->{cell} or return;
my $def = $table->{$offset} or return;
my ($len, $class, $name, $title) = @{$def};
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';
}
$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;
}
$attr .= sprintf ' colspan=%d', $len unless $len == 1;
$attr .= $1 if $class and $class =~ s/( \w+="[^"]*")//;
$attr .= sprintf ' class="%s"', $class if $class;
$attr .= sprintf ' title="%s"', EscapeHTML($title) if $title;
return "$name";
}
for my $row (@request) {
my $cols = $row->{cols};
my $colsize = $row->{cell} && $row->{cell}->{colsize} || 1;
my $coldigits = ceil(log($colsize * $cols) / log(16)); # uniform length of hexadecimal header
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 = $offset + (length($row->{table}) || 256) * $colsize;
printf '', !$row->{cell} && ' charmap';
my $title = $row->{set};
$title .= " " for $row->{setnote} // ();
printf '%s', $title;
print '' x ($cols + 1);
for my $section (qw{thead}) {
print "<$section>", $rowdiv == 1 ? '+' : '↱';
printf ' | %0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1;
print "\n";
}
print ' | ';
while ($offset < $endpoint - 1) {
print '';
{
if (my $rowmod = $offset % $rowdiv) {
# offset in column units
printf '+%X', $rowmod;
}
else {
# divided row offset
printf '%X', ($offset + $row->{offset}) / $rowdiv;
}
}
for (1 .. $cols) {
if ($row->{cell}) {
print range_cell($row, $offset);
next;
}
my $glyph = substr $row->{table}, $offset, 1;
if ($glyph eq $NOCHAR) {
print ' | ';
next;
}
print "\n".$glyphs->glyph_cell($glyph);
}
continue {
$offset += $colsize;
}
print "\n";
}
say ' |
---|
';
}
:>
control
| whitespace
| diacritic
| punctuation
| symbol
| numeric
| greek
| aramaic
| syllabic
african
| japanese
| cjk
| chinese
|
| alphabetic
|
unicode 7.0
| proposed
| deprecated
| unassigned
| invalid
|
|