(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 m{/+}, $Request || 'default';
use List::Util qw( first pairmap pairfirst pairs );
:>
Character encodings
<:
if ($tablist[0] eq 'default') {
say "Overview of Unicode allocation and common latin code pages.";
say "Compare alternate charsets:";
}
else {
say "Charset comparison:";
}
sub optionlink {
my ($title, $href, $selected) = @_;
return sprintf(
$selected ? '%s' : '%s',
EscapeHTML($title), $href
);
}
print join " •\n", (
map {
join " ·\n", pairmap {
optionlink($b || ucfirst $a, '/charset'.($a && "/$a?compare"), $a eq $Request);
} @{$_}
}
[
iso => 'ISO',
dos => 'DOS',
mac => 'Apple',
ebcdic => 'EBCDIC',
$tablist[0] eq 'default' ? () : ('' => 'common'),
],
[
westeur => 'West',
centeur => 'Central',
norteur => 'North European',
turkish => 0,
greek => 0,
cyrillic => 0,
hebrew => 0,
],
);
:>.
<:
use POSIX qw( ceil );
use Shiar_Sheet::FormatChar;
my $glyphs = Shiar_Sheet::FormatChar->new;
my @request;
sub tabinput {
# generate character table(s)
my $input = shift or return;
state $ALIAS = {
default => [qw( u+0-639 utf-8+realsize iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
unicode => [qw( uu+cols=32+realsize u+0-4095 u+4096-6319 u+6320-8191 )],
us => [qw( cp437 cp863 gsm0338 AdobeStandardEncoding )],
ebcdic => [qw( cp37 cp500 cp1047 posix-bc cp1026 cp875 )],
iso => [map {"iso-8859-$_"} 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 )],
norteur => [qw( baltic nordic )],
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
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',
3 => 'turkish',
4 => 'baltic',
5 => 'cyrillic',
6 => 'arabic',
7 => 'greek',
8 => 'hebrew',
9 => 'turkish',
10 => 'nordic',
11 => 'thai',
};
if (my $follow = $ALIAS->{$input}) {
tabinput($_) for ref $follow ? @{$follow} : $follow;
return;
}
state $visible = {}; # all present tables
my %row = (offset => 0, cols => 16);
my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
if (not defined $params) {
state $INHERIT = {
'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'], #TODO: also apply to iso-8859-9
'iso-8859-4' => ['iso-8859-2' => '160'],
'iso-8859-5' => ['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' => '208-223+240'],
'iso-8859-10' => ['iso-8859-4' => '160'],
'iso-8859-11' => ['iso-8859-1' => '160'],
'iso-8859-13' => ['iso-8859-4' => '160'],
'iso-8859-14' => ['iso-8859-1' => '160'],
'iso-8859-15' => ['iso-8859-1' => '160-191'],
'iso-8859-16' => ['iso-8859-2' => '160'],
'hp-roman8' => ['iso-8859-1' => '160'],
'cp1252' => ['iso-8859-1' => '128-159'],
'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'],
'cp861' => ['cp865' => '128-175'],
'cp863' => ['cp437' => '128-175'],
'cp865' => ['cp437' => '144-175'],
'cp852' => ['cp850' => '128', 'cp437' => '128'],
'cp857' => ['cp850' => '128-175+208-239', 'cp437' => '128'],
'cp775' => ['cp850' => '128'], # partial cp437
'cp866' => ['cp437' => '128-175+224'],
'cp855' => ['cp437' => '128'],
'cp1006' => ['iso-8859-6' => '160', 'cp437' => '128'],
'cp737' => ['cp437' => '128-175+224'],
'cp869' => ['cp437' => '128'],
'cp862' => ['cp437' => '128-159'],
'cp864' => ['MacArabic' => '128', 'iso-8859-6' => '128', 'cp437' => '128'], #TODO: compare form variants
'koi8-u' => ['koi8-r' => '144-191'],
'koi8-f' => ['koi8-u' => '144-191'],
'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'],
'MacTurkish' => ['MacRoman' => '208-223'], # F5 is unassigned
'MacSami' => ['MacIcelandic' => '144-191+208-223+240', 'MacRoman' => '144'],
'MacGreek' => ['MacRoman' => '128'],
'MacCyrillic' => ['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' => '16-47+80-95+160-191'],
'cp1026' => ['cp37' => '64'],
'cp875' => ['cp37' => '48'],
};
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];
$params = $parents[1] if $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 (? \d+) (?: [-] (? \d+) )? \z }x) {
if (defined $row{endpoint}) {
# extend earlier range
my $skip = int(($row{endpoint} || $row{offset}) / $row{cols});
for ($skip + 1 .. ($+{offset} / $row{cols}) - 1) {
$row{skip}->{ $_ * $row{cols} - $row{offset} }++;
}
}
else {
$row{offset} = $+{offset};
}
$row{endpoint} = $+{endpoint} || 0;
}
else {
Alert("Unknown option $param
for charset $input");
}
}
if ($input =~ m{ \A u ([0-9a-f]+) (?:-([0-9a-f]+))? \z }ix) {
my $start = hex($1) << ($2 ? 4 : 8);
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{endpoint} = $end - $start;
$row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
$row{offset} = $start % 256;
}
elsif (lc $input eq 'uu') {
$row{set} = 'Unicode planes';
$row{cell} = do 'charset-ucplanes.inc.pl'
or Alert('Table data could not be read', $@ || $!);
$row{endpoint} = 1023 * $row{cell}->{colsize};
}
elsif (lc $input eq 'u') {
$row{cell} = do 'charset-unicode.inc.pl'
or Alert('Table data could not be read', $@ || $!);
$row{endpoint} ||= 8191;
$row{endpoint} *= $row{cell}->{colsize};
$row{startpoint} = $row{cell}->{colsize} * $row{offset};
$row{offset} = 0;
$row{set} = 'Unicode ' . (
$row{startpoint} < 0x10000 && $row{endpoint} < 0x10000 ? 'BMP' :
$row{startpoint} >= 0x10000 && $row{endpoint} < 0x20000 ? 'SMP' :
'allocations'
);
}
elsif ($input =~ m/^utf-*8$/i) {
$row{set} = 'UTF-8';
$row{cell} = do 'charset-utf8.inc.pl'
or Alert('Table data could not be read', $@ || $!);
$row{endpoint} = 255;
}
elsif ($row{set} = Encode::resolve_alias($input)) {
$row{endpoint} ||= 255;
if ($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} .. $row{endpoint}
];
}
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} .. $row{endpoint});
}
$row{endpoint} -= $row{offset};
if ($row{set} eq 'cp437') {
for my $phipos (237 - $row{offset}) {
next if $phipos < 0 or $phipos > $row{endpoint};
# replace phi glyph
substr($row{table}, $phipos, 1) = pack 'U*', 0x3D5;
}
if ($row{offset} == 0) {
# replace control characters by visible variants
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
);
}
}
$visible->{ascii} = # assume common base
$visible->{ $row{set} } = 1;
}
else {
Alert("Encoding $input
unknown");
return;
}
push @request, \%row;
}
tabinput($_) for @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
my $rowsize = $colsize * $cols;
if ($len -= $rows * $cols) {
# partial row remains
$table->{$offset + $rowsize * $rows} //= [$len*$colsize, "$class joinu", '', $title];
$class .= ' joind';
}
unless ($info->{realsize}) {
# coalesce multiple rows
while ($rows > 3) {
$info->{skip}->{$offset += $rowsize}++;
$rows--;
}
if ($rows > 2) {
$info->{skip}->{$offset += $rowsize} = 0;
}
}
$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\n";
}
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 = $row->{startpoint} || 0;
printf '', !$row->{cell} && ' charmap';
my $title = $row->{set};
$title .= " "
for grep { $_ ne 'iso-8859-1' } $row->{parent} // ();
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 < $row->{endpoint}) {
if ($row->{skip}->{$offset}) {
$offset += $cols * $colsize;
next;
}
print '';
if (defined $row->{skip}->{$offset}) {
print '⋮';
}
else {
if (my $rowmod = $offset % $rowdiv) {
# offset in column units
printf '+%X', $rowmod;
}
else {
# divided row offset
printf '%X', ($offset + $row->{offset}) / $rowdiv;
}
}
say '';
for (1 .. $cols) {
if ($row->{cell}) {
print range_cell($row, $offset);
next;
}
my $cp = $offset + $row->{offset};
my $glyph = ref $row->{table} eq 'ARRAY' ? $row->{table}->[$offset] :
substr $row->{table}, $offset, 1;
my ($cell, $name, $class) = $glyph eq $NOCHAR ? () :
$glyphs->glyph_html($glyph);
if (exists $get{compare}) {
state $visible = {};
$class = (
$cp == ord $glyph ? 'l4' :
$row->{parent} && $glyph eq
Encode::decode($row->{parent}, pack 'C', $cp) ? 'l3' :
!$class ? undef :
$visible->{$glyph} ? 'l2' :
'l1'
);
$visible->{$glyph}++;
}
say sprintf $class ? ' | %s' : ' | ',
$name, $class, $cell;
}
continue {
$offset += $colsize;
}
}
say ' |
---|
';
}
:>
<: if (exists $get{compare}) { :>
unicode
| inherited
| existing
| original
| unassigned
<: } else { :>
| control
| whitespace
| diacritic
| punctuation
| symbol
| numeric
| greek
| aramaic
| syllabic
african
| japanese
| cjk
| chinese
|
| alphabetic
|
unicode 7.0
| proposed
| deprecated
| unassigned
| invalid
<: } :> |
|