4 :><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
5 "http://www.w3.org/TR/html4/loose.dtd">
9 <meta http-equiv="content-type" content="<:= $header{content_type} :>">
10 <title>charset cheat sheet</title>
11 <meta name="description" content="Reference sheet with all glyphs in common character encoding tables, and an overview of Unicode ranges and UTF-8 bytes.">
12 <meta name="keywords" content="charset, codepage, unicode, ascii, utf8, latin, glyph, character, encoding, reference, common, overview, table">
13 <:= stylesheet(qw'light') :>
14 <link rel="icon" type="image/png" href="/clip.png">
18 <h1>Character encoding</h1>
21 my $diinfo = do 'digraphs.inc.pl';
22 my %di = map { $diinfo->{$_}->[0] => $_ } grep { ref $diinfo->{$_} }
25 use Encode qw(decode resolve_alias);
26 # generate character table(s)
27 # (~16x faster than decoding in loop;
28 # substr strings is twice as fast as splitting to an array)
30 # default => [qw(unicode utf-8 iso-8859-1 cp437 -cp1252- --iso-8859-15- -koi8-f)],
31 default => [qw(unicode- utf-8 iso-8859-1 -cp1252- --iso-8859-15- cp437 -cp850)],
32 0 => [qw(cp437 cp863)],
33 1 => [qw(iso-8859-1 cp1252 MacRoman cp850)],
34 2 => [qw(iso-8859-2 cp1250 cp852 MacCentralEurRoman MacCroatian MacRumanian)],
35 5 => [qw(koi8-f iso-8859-5 cp1251 MacCyrillic cp855 cp866)],
36 7 => [qw(iso-8859-7 cp1253 MacGreek cp737 cp869)],
37 8 => [qw(iso-8859-8 cp1255 MacHebrew cp862)],
41 my %row = (offset => 0);
43 if ($input =~ s/^--//) {
44 $row{offset} = $endpoint > 160 ? 160 : 48;
46 elsif ($input =~ s/^-//) {
47 $row{offset} = $endpoint > 128 ? 128 : 32;
49 if ($input =~ s/-$//) {
50 $endpoint = $row{offset} ? $row{offset} < 160 ? 159 : 191 : 127;
53 if ($input =~ /^U([0-9a-f]+)(?:-([0-9a-f]+))?/) {
54 my $start = hex($1) << ($2 ? 4 : 8);
55 my $end = $2 ? hex($2) << 4 : $start + 240;
56 $row{table} = join '', map { chr } $start .. $end+15;
57 utf8::upgrade($row{table}); # prevent latin1 output
58 $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
60 elsif ($input eq 'U') {
61 $row{table} = ' ' x 512;
62 $row{set} = 'Unicode planes';
63 $row{cell} = do 'charset-ucplanes.inc.pl';
65 elsif ($row{set} = resolve_alias($input)) {
66 if ($row{set} eq 'Internal') {
67 $row{table} = ' ' x ($endpoint < 255 ? 640 : 4096);
68 $row{set} = 'Unicode BMP';
69 $row{cell} = do 'charset-unicode.inc.pl';
71 elsif ($row{set} eq 'utf-8-strict') {
74 $row{cell} = do 'charset-utf8.inc.pl';
77 $row{table} = decode($row{set}, pack 'C*', $row{offset} .. $endpoint);
81 print "<p>Encoding $input unknown</p>\n";
88 } map { defined $ALIAS{$_} ? @{ $ALIAS{$_} } : $_ }
89 $ENV{PATH_INFO} =~ /\w/ ? split(m{[/+\s]}, $ENV{PATH_INFO}) : 'default';
90 my $NOCHAR = chr 0xFFFD;
92 for my $cp437 (grep {$request[$_]->{set} eq 'cp437'} 0 .. $#request) {
93 substr($request[$cp437]->{table}, 237, 1) = pack 'U*', 0x3D5; # phi sign
94 substr($request[$cp437]->{table}, 0, 32) = pack 'U*', map {hex} qw(
95 2007 263A 263B 2665 2666 2663 2660 2022 25D8 25CB 25D9 2642 2640 266A 266B 263C
96 25BA 25C4 2195 203C 00B6 00A7 25AC 21A8 2191 2193 2192 2190 221F 2194 25B2 25BC
100 my @nibble = (0..9, 'A'..'F');
101 for my $row (@request) {
102 printf '<div class="section"><table class="glyphs%s">', !$row->{cell} && ' charmap';
103 printf '<caption>%s</caption>', $row->{set};
105 for my $section (qw{thead}) {
106 print "<$section><tr><th>↱";
107 print '<th>', $_ for @nibble;
111 for my $msb (0 .. (length($row->{table}) || 256) - 1 >> 4) {
112 printf '<tr><th>%X', $msb + ($row->{offset} >> 4);
113 for my $lsb (0 .. $#nibble) {
115 print $row->{cell}->(($msb<<4) + $lsb);
119 my $glyph = substr $row->{table}, ($msb<<4) + $lsb, 1;
120 if ($glyph eq $NOCHAR) {
125 my $info = [ord $glyph];
126 if (defined (my $mnem = $di{ord $glyph})) {
127 $info = $diinfo->{$mnem};
130 require Unicode::UCD;
131 my $fullinfo = Unicode::UCD::charinfo(ord $glyph);
132 $info = [@$fullinfo{qw/code name category script string/}] if $fullinfo;
134 my ($codepoint, $name, $prop, $script, $string) = @$info;
136 $glyph = EscapeHTML($string || $glyph);
137 my $desc = sprintf 'U+%04X%s', $codepoint, $name && " ($name)";
138 my @class = ('X', grep {$_} $prop, $script);
140 $glyph = "<span>$glyph</span>" if $prop eq 'Zs';
142 printf "\n".'<td class="%s" title="%s">%s',
143 join(' ', @class), EscapeHTML($desc), $glyph;
147 print "</table></div>\n";
154 <table class="glyphs"><tr>
155 <td class="X Cc">control
156 <td class="X Zs"><span>whitespace</span>
157 <td class="X Mn">diacritic<table class="glyphs"><tr>
158 <td class="X Sk">letter
160 <td class="X Po">punctuation<table class="glyphs"><tr>
161 <td class="X Pf">quote
163 <td class="X So">symbol<table class="glyphs"><tr>
164 <td class="X Sm">math
165 <td class="X Sc">currency
167 <td class="X No">numeric
168 <td class="X Greek">greek<table class="glyphs"><tr>
169 <td class="X Latin">latin
170 <td class="X Cyrillic">cyrillic
172 <td class="X Aramaic">aramaic<table class="glyphs"><tr>
173 <td class="X Brahmic">brahmic
174 <td class="X Arabic">arabic
176 <td class="X Syllabic">syllabic<table class="glyphs"><tr>
177 <td class="X African">african
178 <td class="X Hiragana">japanese
179 <td class="X Han">cjk
180 <td class="X Bopomofo">chinese
182 <td class="X Alpha">alphabetic
185 <table class="glyphs"><tr>
186 <td class="X">unicode 5.0
187 <td class="X Xr">proposed
188 <td class="X Xd">deprecated
189 <td class="">unassigned
190 <td class="X Xi">invalid
195 <a href="/" rel="home">sheet.shiar.nl</a>/charset.<a href="/source/charset.plp"
196 rel="code" title="Written in Perl">plp</a>
197 <a href="http://git.shiar.nl/sheet.git/history/HEAD:/charset.plp"
198 rel="vcs-git" title="Git repository"><:= $VERSION :></a>
199 created by <a href="http://shiar.nl/" rel="author">Shiar</a> •
200 <a href="http://www.fsf.org/licensing/licenses/agpl-3.0.html" rel="copyright"
201 title="Licensed under the GNU Affero General Public License, version 3">AGPLv3</a>