<:
use utf8;
use strict;
use warnings;
use open IO => ':utf8';
our $VERSION = '1.0';
$header{content_type} = 'text/html; charset=utf-8';
:>
charset cheat sheet
Character encoding
<:
my $diinfo = do 'digraphs.inc.pl';
my %di = map { $diinfo->{$_}->[0] => $_ } grep { ref $diinfo->{$_} }
keys %$diinfo;
use Encode qw(decode resolve_alias);
# generate character table(s)
# (~16x faster than decoding in loop;
# substr strings is twice as fast as splitting to an array)
my %ALIAS = (
# default => [qw(unicode utf-8 iso-8859-1 cp437 -cp1252- --iso-8859-15- -koi8-f)],
default => [qw(unicode- utf-8 iso-8859-1 -cp1252- --iso-8859-15- cp437 -cp850)],
0 => [qw(cp437 cp863)],
1 => [qw(iso-8859-1 cp1252 MacRoman cp850)],
2 => [qw(iso-8859-2 cp1250 cp852 MacCentralEurRoman MacCroatian MacRumanian)],
5 => [qw(koi8-f iso-8859-5 cp1251 MacCyrillic cp855 cp866)],
7 => [qw(iso-8859-7 cp1253 MacGreek cp737 cp869)],
8 => [qw(iso-8859-8 cp1255 MacHebrew cp862)],
);
my @request = map {
if (my $input = $_) {
my %row = (offset => 0);
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} ? $row{offset} < 160 ? 159 : 191 : 127;
}
if ($row{set} = resolve_alias($input)) {
if ($row{set} eq 'Internal') {
$row{table} = ' ' x ($endpoint < 255 ? 640 : 4096);
$row{set} = 'Unicode BMP';
}
elsif ($row{set} eq 'utf-8-strict') {
$row{table} = undef;
$row{set} = 'UTF-8';
}
else {
$row{table} = decode($row{set}, pack 'C*', $row{offset} .. $endpoint);
}
}
else {
print "Encoding $input unknown
\n";
}
\%row;
}
else {
();
}
} map { defined $ALIAS{$_} ? @{ $ALIAS{$_} } : $_ }
$ENV{PATH_INFO} =~ /\w/ ? split(m{[/+\s]}, $ENV{PATH_INFO}) : 'default';
my $NOCHAR = chr 0xFFFD;
for my $cp437 (grep {$request[$_]->{set} eq 'cp437'} 0 .. $#request) {
substr($request[$cp437]->{table}, 237, 1) = pack 'U*', 0x3D5; # phi sign
substr($request[$cp437]->{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
);
}
sub quote {
local $_ = shift;
s/"/"/g;
s//>/g;
return $_;
}
sub printcell_unicode {
my ($value) = @_;
if ($value > 0xFFF) {
print "\n".'?';
}
elsif ($value == 0) {
print ' control';
}
elsif ($value == 2) {
print ' comn';
}
elsif ($value == 4) {
print ' basic latin';
}
elsif ($value == 8) {
print ' control';
}
elsif ($value == 10) {
print ' comn';
}
elsif ($value == 12) {
print ' latin1';
}
elsif ($value == 0x10) {
print ' latin extended-A';
}
elsif ($value == 0x18) {
print ' latin extended-B';
}
elsif ($value == 0x20) {
print ' latin ext-B';
}
elsif ($value == 0x25) {
print ' IPA';
}
elsif ($value == 0x2B) {
print ' spacing modifier';
}
elsif ($value == 0x30) {
print ' diacritics';
}
elsif ($value == 0x38) {
print ' greek';
}
elsif ($value == 0x40) {
print ' cyrillic';
}
elsif ($value == 0x50) {
print ' cyrillic+';
}
elsif ($value == 0x53) {
print ' armenian';
}
elsif ($value == 0x58) {
print ' hebrew';
}
elsif ($value == 0x60) {
print ' arabic';
}
elsif ($value == 0x70) {
print ' syriac';
}
elsif ($value == 0x75) {
print ' arabic+';
}
elsif ($value == 0x78) {
print ' thaana';
}
elsif ($value == 0x7C) {
print ' n\'ko';
}
elsif ($value == 0x80) {
print ' samaritan';
}
elsif ($value == 0x84) {
print ' manda';
}
elsif ($value == 0x86) {
print ' reserved';
}
elsif ($value == 0x90) {
print ' devanagari';
}
elsif ($value == 0x98) {
print ' bengali';
}
elsif ($value == 0xA0) {
print ' gurmukhi';
}
elsif ($value == 0xA8) {
print ' gujarati';
}
elsif ($value == 0xB0) {
print ' oriya';
}
elsif ($value == 0xB8) {
print ' tamil';
}
elsif ($value == 0xC0) {
print ' telugu';
}
elsif ($value == 0xC8) {
print ' kannada';
}
elsif ($value == 0xD0) {
print ' malayalam';
}
elsif ($value == 0xD8) {
print ' sinhala';
}
elsif ($value == 0xE0) {
print ' thai';
}
elsif ($value == 0xE8) {
print ' lao';
}
elsif ($value == 0xF0) {
print ' tibetan';
}
elsif ($value == 0x100) {
print ' myanmar';
}
elsif ($value == 0x10A) {
print ' georgian';
}
elsif ($value == 0x110) {
print ' hangeul jamo';
}
elsif ($value == 0x120) {
print ' ethiopic';
}
elsif ($value == 0x130) {
print ' ethiopic';
}
elsif ($value == 0x138) {
print ' eth+';
}
elsif ($value == 0x13A) {
print ' cherokee';
}
elsif ($value == 0x140) {
print ' unified canadian aboriginal syllabics';
}
elsif ($value == 0x160) {
print ' unified canadian syllabics';
}
elsif ($value == 0x168) {
print ' ogham';
}
elsif ($value == 0x16A) {
print ' runic';
}
elsif ($value == 0x170) {
print ' tagalog';
}
elsif ($value == 0x172) {
print ' hanun';
}
elsif ($value == 0x174) {
print ' buhid';
}
elsif ($value == 0x176) {
print ' tagb';
}
elsif ($value == 0x178) {
print ' khmer';
}
elsif ($value == 0x180) {
print ' mongolian';
}
elsif ($value == 0x18B) {
print ' canadian+';
}
elsif ($value == 0x190) {
print ' limbu';
}
elsif ($value == 0x195) {
print ' tai le';
}
elsif ($value == 0x198) {
print ' new tai lue';
}
elsif ($value == 0x19E) {
print ' km';
}
elsif ($value == 0x1A0) {
print ' lontara';
}
elsif ($value == 0x1A2) {
print ' tai tham';
}
elsif ($value == 0x1AB) {
print ' reserved';
}
elsif ($value == 0x1B0) {
print ' balinese';
}
elsif ($value == 0x1B8) {
print ' sundanese';
}
elsif ($value == 0x1BC) {
print ' batak';
}
elsif ($value == 0x1C0) {
print ' lepcha';
}
elsif ($value == 0x1C5) {
print ' ol chiki';
}
elsif ($value == 0x1C8) {
print ' reserved';
}
elsif ($value == 0x1CD) {
print ' vedic';
}
elsif ($value == 0x1D0) {
print ' phonetic';
}
elsif ($value == 0x1D8) {
print ' phonetic+';
}
elsif ($value == 0x1DC) {
print ' combining';
}
elsif ($value == 0x1E0) {
print ' latin extended additional';
}
elsif ($value == 0x1F0) {
print ' greek+';
}
elsif ($value == 0x200) {
print ' general punctuation';
}
elsif ($value == 0x207) {
print ' suþscript'; # suth now means "sub and/or sup"
}
elsif ($value == 0x20A) {
print ' currency';
}
elsif ($value == 0x20D) {
print ' overlay';
}
elsif ($value == 0x210) {
print ' letterlike';
}
elsif ($value == 0x215) {
print ' number';
}
elsif ($value == 0x219) {
print ' arrows';
}
elsif ($value == 0x220) {
print ' mathematical symbols';
}
elsif ($value == 0x230) {
print ' miscellaneous technical';
}
elsif ($value == 0x240) {
print ' control';
}
elsif ($value == 0x244) {
print ' OCR';
}
elsif ($value == 0x246) {
print ' enclosed alphanumerics';
}
elsif ($value == 0x250) {
print ' box drawing';
}
elsif ($value == 0x258) {
print ' blocks';
}
elsif ($value == 0x25A) {
print ' geometric shapes';
}
elsif ($value == 0x260) {
print ' miscellaneous symbols';
}
elsif ($value == 0x270) {
print ' dingbats';
}
elsif ($value == 0x27C) {
print ' maths-A';
}
elsif ($value == 0x27F) {
print ' arr';
}
elsif ($value == 0x280) {
print ' braille';
}
elsif ($value == 0x290) {
print ' supplemental arrows-B';
}
elsif ($value == 0x298) {
print ' mathematical symbols-B';
}
elsif ($value == 0x2A0) {
print ' supplemental mathematical operators';
}
elsif ($value == 0x2B0) {
print ' miscellaneous symbols and arrows';
}
elsif ($value == 0x2C0) {
print ' glagolitic';
}
elsif ($value == 0x2C6) {
print ' latin-C';
}
elsif ($value == 0x2C8) {
print ' coptic';
}
elsif ($value == 0x2D0) {
print ' georgian+';
}
elsif ($value == 0x2D3) {
print ' tifinagh'; #TODO: proto-canaanite
}
elsif ($value == 0x2D8) {
print ' ethiopic+';
}
elsif ($value == 0x2DE) {
print ' cyrl-A';
}
elsif ($value == 0x2E0) {
print ' punctuation+';
}
elsif ($value == 0x2E8) {
print ' cjk radicals';
}
elsif ($value == 0x2F0) {
print ' kangxi radicals';
}
elsif ($value == 0x2FE) {
print ' ';
}
elsif ($value == 0x2FF) {
print ' idc';
}
elsif ($value == 0x300) {
print ' cjk misc';
}
elsif ($value == 0x304) {
print ' hiragana';
}
elsif ($value == 0x30A) {
print ' katakana';
}
elsif ($value == 0x310) {
print ' bopomofo';
}
elsif ($value == 0x313) {
print ' hangeul compat';
}
elsif ($value == 0x319) {
print ' kbn';
}
elsif ($value == 0x31A) {
print ' bpmf';
}
elsif ($value == 0x31C) {
print ' strokes';
}
elsif ($value == 0x31F) {
print ' k+';
}
elsif ($value == 0x320) {
print ' enclosed cjk characters';
}
elsif ($value == 0x330) {
print ' cjk compatibility';
}
elsif ($value == 0x340) {
print ' cjk unified ideographs extension A';
}
elsif ($value == 0x4D0) {
print ' cjk unified ideographs extension A';
}
elsif ($value == 0x4DC) {
print ' hexagrams';
}
elsif ($value == 0x4E0) {
print ' cjk unified ideographs';
}
elsif ($value == 0xA00) {
print ' yi';
}
elsif ($value == 0xA40) {
print ' yi';
}
elsif ($value == 0xA49) {
print ' yi radicals';
}
elsif ($value == 0xA4D) {
print ' lisu';
}
elsif ($value == 0xA50) {
print ' vai';
}
elsif ($value == 0xA60) {
print ' vai';
}
elsif ($value == 0xA64) {
print ' cyrillic extended-B';
}
elsif ($value == 0xA6A) {
print ' bamum';
}
elsif ($value == 0xA70) {
print ' tones';
}
elsif ($value == 0xA72) {
print ' latin extended-D';
}
elsif ($value == 0xA80) {
print ' sylheti';
}
elsif ($value == 0xA83) {
print ' in';
}
elsif ($value == 0xA84) {
print ' phags-pa';
}
elsif ($value == 0xA88) {
print ' saurashtra';
}
elsif ($value == 0xA8E) {
print ' deva+';
}
elsif ($value == 0xA90) {
print ' kayah li';
}
elsif ($value == 0xA93) {
print ' rejang';
}
elsif ($value == 0xA96) {
print ' jamo-A';
}
elsif ($value == 0xA98) {
print ' javanese';
}
elsif ($value == 0xA9E) {
print ' res';
}
elsif ($value == 0xAA0) {
print ' cham';
}
elsif ($value == 0xAA6) {
print ' mym-A';
}
elsif ($value == 0xAA8) {
print ' tai viet';
}
elsif ($value == 0xAAE) {
print ' mtei+';
}
elsif ($value == 0xAB0) {
print ' reserved';
}
elsif ($value == 0xABC) {
print ' manipuri';
}
elsif ($value == 0xAC0) {
print ' hangeul syllables';
}
elsif ($value == 0xD70) {
print ' hangeul syllables';
}
elsif ($value == 0xD7B) {
print ' haungeul jamo-B';
}
elsif ($value == 0xD80) {
print ' high surrogates';
}
elsif ($value == 0xDC0) {
print ' low surrogates';
}
elsif ($value == 0xE00) {
print ' private use';
}
elsif ($value == 0xF90) {
print ' cjk compatibility ideographs';
}
elsif ($value == 0xFB0) {
print ' presentation';
}
elsif ($value == 0xFB5) {
print ' ';
}
elsif ($value == 0xFC0) {
print ' arabic presentation forms A';
}
elsif ($value == 0xFD0) {
print ' ';
}
elsif ($value == 0xFDD) {
print ' ?';
}
elsif ($value == 0xFDF) {
print ' ';
}
elsif ($value == 0xFE0) {
print ' var';
}
elsif ($value == 0xFE1) {
print ' ver';
}
elsif ($value == 0xFE2) {
print ' ½';
}
elsif ($value == 0xFE3) {
print ' comp';
}
elsif ($value == 0xFE5) {
print ' small';
}
elsif ($value == 0xFE7) {
print ' arabic presentation B';
}
elsif ($value == 0xFF0) {
print ' halfwidth & fullwidth forms';
}
elsif ($value == 0xFFF) {
print ' sp';
}
}
sub printcell_utf8 {
my ($value) = @_;
if ($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 $value == 0xE0;
}
elsif ($value <= 0xF4) {
print ' 4-byte sequence'
if $value == 0xF0;
}
elsif ($value <= 0xF7) {
print ' (overflow)'
if $value == 0xF5;
}
elsif ($value <= 0xFB) {
print ' 5-byte'
if $value == 0xF8;
}
elsif ($value <= 0xFD) {
print ' 6-byte'
if $value == 0xFC;
}
elsif ($value <= 0xFF) {
print ' invalid'
if $value == 0xFE;
}
else {
print "\n".' ?';
}
}
print "\n";
my @nibble = (0..9, 'A'..'F');
for my $row (@request) {
print '';
printf '%s ', $row->{set};
print '↱";
print ' ', $_ for @nibble;
print "\n";
}
print ' ';
for my $msb (0 .. (length($row->{table}) || 256) - 1 >> 4) {
printf '%X', $msb + ($row->{offset} >> 4);
for my $lsb (0 .. $#nibble) {
if ($row->{set} eq 'UTF-8') {
printcell_utf8(($msb<<4) + $lsb);
next;
}
elsif ($row->{set} eq 'Unicode BMP') {
printcell_unicode(($msb<<4) + $lsb);
next;
}
my $glyph = substr $row->{table}, ($msb<<4) + $lsb, 1;
if ($glyph eq $NOCHAR) {
print ' ';
next;
}
my $info = [ord $glyph];
if (defined (my $mnem = $di{ord $glyph})) {
$info = $diinfo->{$mnem};
}
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);
$glyph = "$glyph " if $prop eq 'Zs';
printf "\n".' %s',
join(' ', @class), quote($desc), $glyph;
}
print "\n";
}
print "
\n";
}
print " \n";
:>