5 use open IO => ':utf8';
9 $header{content_type} = 'text/html; charset=utf-8';
11 :><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
12 "http://www.w3.org/TR/html4/loose.dtd">
16 <meta http-equiv="content-type" content="<:= $header{content_type} :>">
17 <title>charset cheat sheet</title>
18 <link rel="stylesheet" type="text/css" media="all" href="/base.css">
22 <h1>Character encoding</h1>
25 my $diinfo = do 'digraphs.inc.pl';
26 my %di = map { $diinfo->{$_}->[0] => $_ } grep { ref $diinfo->{$_} }
29 use Encode qw(decode resolve_alias);
30 # generate character table(s)
31 # (~16x faster than decoding in loop;
32 # substr strings is twice as fast as splitting to an array)
34 # default => [qw(unicode utf-8 iso-8859-1 cp437 -cp1252- --iso-8859-15- -koi8-f)],
35 default => [qw(unicode- utf-8 iso-8859-1 -cp1252- --iso-8859-15- cp437 -cp850)],
36 0 => [qw(cp437 cp863)],
37 1 => [qw(iso-8859-1 cp1252 MacRoman cp850)],
38 2 => [qw(iso-8859-2 cp1250 cp852 MacCentralEurRoman MacCroatian MacRumanian)],
39 5 => [qw(koi8-f iso-8859-5 cp1251 MacCyrillic cp855 cp866)],
40 7 => [qw(iso-8859-7 cp1253 MacGreek cp737 cp869)],
41 8 => [qw(iso-8859-8 cp1255 MacHebrew cp862)],
45 my %row = (offset => 0);
47 if ($input =~ s/^--//) {
48 $row{offset} = $endpoint > 160 ? 160 : 48;
50 elsif ($input =~ s/^-//) {
51 $row{offset} = $endpoint > 128 ? 128 : 32;
53 if ($input =~ s/-$//) {
54 $endpoint = $row{offset} ? $row{offset} < 160 ? 159 : 191 : 127;
57 if ($input =~ /^U([0-9a-f]+)(?:-([0-9a-f]+))?/) {
58 my $start = hex($1) << ($2 ? 4 : 8);
59 my $end = $2 ? hex($2) << 4 : $start + 240;
60 $row{table} = join '', map { chr } $start .. $end+15;
61 utf8::upgrade($row{table}); # prevent latin1 output
62 $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
64 elsif ($input eq 'U') {
65 $row{table} = ' ' x 512;
66 $row{set} = 'Unicode planes';
67 $row{cell} = do 'charset-ucplanes.inc.pl';
69 elsif ($row{set} = resolve_alias($input)) {
70 if ($row{set} eq 'Internal') {
71 $row{table} = ' ' x ($endpoint < 255 ? 640 : 4096);
72 $row{set} = 'Unicode BMP';
73 $row{cell} = do 'charset-unicode.inc.pl';
75 elsif ($row{set} eq 'utf-8-strict') {
78 $row{cell} = do 'charset-utf8.inc.pl';
81 $row{table} = decode($row{set}, pack 'C*', $row{offset} .. $endpoint);
85 print "<p>Encoding $input unknown</p>\n";
92 } map { defined $ALIAS{$_} ? @{ $ALIAS{$_} } : $_ }
93 $ENV{PATH_INFO} =~ /\w/ ? split(m{[/+\s]}, $ENV{PATH_INFO}) : 'default';
94 my $NOCHAR = chr 0xFFFD;
96 for my $cp437 (grep {$request[$_]->{set} eq 'cp437'} 0 .. $#request) {
97 substr($request[$cp437]->{table}, 237, 1) = pack 'U*', 0x3D5; # phi sign
98 substr($request[$cp437]->{table}, 0, 32) = pack 'U*', map {hex} qw(
99 2007 263A 263B 2665 2666 2663 2660 2022 25D8 25CB 25D9 2642 2640 266A 266B 263C
100 25BA 25C4 2195 203C 00B6 00A7 25AC 21A8 2191 2193 2192 2190 221F 2194 25B2 25BC
114 my @nibble = (0..9, 'A'..'F');
115 for my $row (@request) {
116 printf '<li><table class="glyphs%s">', !$row->{cell} && ' charmap';
117 printf '<caption>%s</caption>', $row->{set};
119 for my $section (qw{thead}) {
120 print "<$section><tr><th>↱";
121 print '<th>', $_ for @nibble;
125 for my $msb (0 .. (length($row->{table}) || 256) - 1 >> 4) {
126 printf '<tr><th>%X', $msb + ($row->{offset} >> 4);
127 for my $lsb (0 .. $#nibble) {
129 print $row->{cell}->(($msb<<4) + $lsb);
133 my $glyph = substr $row->{table}, ($msb<<4) + $lsb, 1;
134 if ($glyph eq $NOCHAR) {
139 my $info = [ord $glyph];
140 if (defined (my $mnem = $di{ord $glyph})) {
141 $info = $diinfo->{$mnem};
143 my ($codepoint, $name, $prop, $script, $string) = @$info;
145 $glyph = quote($string || $glyph);
146 my $desc = sprintf 'U+%04X%s', $codepoint, $name && " ($name)";
147 my @class = ('X', grep {$_} $prop, $script);
149 $glyph = "<span>$glyph</span>" if $prop eq 'Zs';
151 printf "\n".'<td class="%s" title="%s">%s',
152 join(' ', @class), quote($desc), $glyph;
165 <table class="glyphs"><tr>
166 <td class="X Cc">control
167 <td class="X Zs"><span>whitespace</span>
168 <td class="X Mn">diacritic<table class="glyphs"><tr>
169 <td class="X Sk">letter
171 <td class="X Po">punctuation<table class="glyphs"><tr>
172 <td class="X Pf">quote
174 <td class="X So">symbol<table class="glyphs"><tr>
175 <td class="X Sm">math
176 <td class="X Sc">currency
178 <td class="X No">numeric
179 <td class="X Greek">greek<table class="glyphs"><tr>
180 <td class="X Latin">latin
181 <td class="X Cyrillic">cyrillic
183 <td class="X Aramaic">aramaic<table class="glyphs"><tr>
184 <td class="X Brahmic">brahmic
185 <td class="X Arabic">arabic
187 <td class="X Syllabic">syllabic<table class="glyphs"><tr>
188 <td class="X African">african
189 <td class="X Hiragana">japanese
190 <td class="X Han">cjk
191 <td class="X Bopomofo">chinese
193 <td class="X Alpha">alphabetic
196 <table class="glyphs"><tr>
197 <td class="X">unicode 5.0
198 <td class="X Xr">proposed
199 <td class="X Xd">deprecated
200 <td class="">unassigned
201 <td class="X Xi">invalid
206 <a href="/" rel="home">sheet.shiar.nl</a>/charset
207 <a href="git://git.shiar.nl/sheet" rel="vcs-git" title="Git repository"><:= $VERSION :></a>
208 created by <a href="http://shiar.nl/" rel="author">Shiar</a> •
209 <a title="Licensed under the GNU Affero General Public License, version 3" rel="copyright"
210 href="http://www.fsf.org/licensing/licenses/agpl-3.0.html">AGPLv3</a>