+<(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';
+
+:>
+<h1>Character encoding</h1>
+
<:
-use utf8;
-use strict;
-use warnings;
-use open IO => ':utf8';
+use POSIX qw( ceil );
+use Shiar_Sheet::FormatChar;
+my $glyphs = Shiar_Sheet::FormatChar->new;
+my @request;
-our $VERSION = '1.0';
+sub tabinput {
+ # generate character table(s)
+ my $input = shift or return;
-$header{content_type} = 'text/html; charset=utf-8';
+ state $ALIAS = {
+ default => [qw( unicode+0-192 utf-8 iso-8859-1 cp1252+128-159 iso-8859-15+160-191 cp437 cp850+128 )],
+ us => [qw( cp437 cp863+128 AdobeStandardEncoding gsm0338+0-127 )],
+ ebcdic => [qw( cp37 cp500 cp875 cp1026 cp1047 posix-bc )],
+ westeur => [qw( iso-8859-1 iso-8859-15+160-191 cp1252+128-159 iso-8859-14+160 cp850+128 MacRoman+128 nextstep+128 hp-roman8+160 )],
+ centeur => [qw( iso-8859-2 iso-8859-16+160 cp1250+128 cp852+128 MacCentralEurRoman+128 MacCroatian+128 MacRomanian+128 )], # MacRumanian only for DB
+ turkish => [qw( iso-8859-3 iso-8859-9+128 cp857+128 cp1254+128 MacTurkish+128 )],
+ baltic => [qw( iso-8859-4 iso-8859-13+160 cp775+128 cp1257+128 )],
+ nordic => [qw( iso-8859-10 cp865+128 cp861+160-191 MacIcelandic+128 MacSami+160 )],
+ cyrillic => [qw( koi8-f koi8-r+128-192 koi8-u+160-192 iso-8859-5+128 cp1251+128 MacCyrillic+128 cp855+128 cp866+128 )], # MacUkrainian is broken
+ arabic => [qw( iso-8859-6 cp1006+160 cp864+128 cp1256+128 MacArabic )], # MacFarsi same as MacArabic?
+ greek => [qw( iso-8859-7 cp1253+128 MacGreek+128 cp737+128 cp869+128 )],
+ hebrew => [qw( iso-8859-8 cp1255+128 MacHebrew+128 cp862+128 )],
+ thai => [qw( iso-8859-11 cp874+128-159 MacThai+128 )],
+ 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;
+ }
-:><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
- "http://www.w3.org/TR/html4/loose.dtd">
-<html>
+ my %row = (offset => 0, cols => 16);
+ my $endpoint = 255;
+ my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
-<head>
-<title>charset cheat sheet</title>
-<meta http-equiv="content-type" content="utf-8">
-<link rel="stylesheet" type="text/css" media="all" href="/base.css">
-</head>
+ if (defined $params and $params =~ m/^ (\d+) (-\d+)? /x) {
+ $row{offset} = $1;
+ $endpoint = -$2 if $2;
+ }
+ if ($row{offset}) {
+ $row{setnote} = 'over cp437' if $input eq 'cp850';
+ $row{setnote} = 'over iso-8859-1' if $input =~ /^iso-8859-|^cp125/;
+ }
-<body>
-<h1>Character encoding</h1>
+ if ($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 <q>$input</q> unknown");
+ return;
+ }
+ push @request, \%row;
+}
+tabinput($_) for @tablist;
-<:
-my $diinfo = do 'digraphs.inc.pl';
-my %di = map { $diinfo->{$_}->[0] => $_ } grep { ref $diinfo->{$_} }
- keys %$diinfo;
-
-use Encode qw(decode);
-# generate character table(s)
-# (~16x faster than decoding in loop;
-# substr strings is twice as fast as splitting to an array)
-my @request = ('iso-8859-1', 'cp437');
-my @tables = map { decode($_, pack 'C*', 0..255) } @request;
my $NOCHAR = chr 0xFFFD;
-for my $cp437 (grep {$request[$_] eq 'cp437'} 0 .. $#request) {
- substr($tables[$cp437], 237, 1) = pack 'U*', 0x3D5; # phi sign
- substr($tables[$cp437], 0, 32) = pack 'U*', map {hex} qw(
- 2007 263A 263B 2665 2666 2663 2660 2022 25D8 25CB 25D9 2642 2640 266A 266B 263C
- 25BA 25C4 2195 203C 00B6 00A7 25AC 21A8 2191 2193 2192 2190 221F 2194 25B2 25BC
- );
-}
+sub range_cell {
+ my ($info, $offset) = @_;
+ my $table = $info->{cell} or return;
+ my $def = $table->{$offset} or return;
+ my ($len, $class, $name, $title) = @{$def};
-sub quote {
- local $_ = shift;
- s/"/"/g;
- s/</</g;
- s/>/>/g;
- return $_;
+ 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 $title;
+ return "<td$attr>$name";
}
-print "<ul>\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 = 0;
+ my $endpoint = $offset + (length($row->{table}) || 256) * $colsize;
-my @nibble = (0..9, 'A'..'F');
-for my $tablenum (0 .. $#tables) {
- print '<li><table class="glyphs">';
- printf '<caption>%s</caption>', $request[$tablenum];
- print '<col>';
+ printf '<div class="section"><table class="glyphs%s">', !$row->{cell} && ' charmap';
+ my $title = $row->{set};
+ $title .= " <aside>($_)</aside>" for $row->{setnote} // ();
+ printf '<caption>%s</caption>', $title;
+ print '<col>' x ($cols + 1);
for my $section (qw{thead}) {
- print "<$section><tr><th>↱";
- print '<th>', $_ for @nibble;
+ print "<$section><tr><th>", $rowdiv == 1 ? '+' : '↱';
+ printf '<th>%0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1;
print "\n";
}
print '<tbody>';
- for my $msb (0 .. $#nibble) {
- print '<tr><th>', $nibble[$msb];
- for my $lsb (0 .. $#nibble) {
- my $glyph = substr $tables[$tablenum], ($msb<<4) + $lsb, 1;
+ while ($offset < $endpoint - 1) {
+ print '<tr><th>';
+ {
+ if (my $rowmod = $offset % $rowdiv) {
+ # offset in column units
+ printf '<small>+%X</small>', $rowmod;
+ }
+ else {
+ # divided row offset
+ printf '%X', ($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 '<td>';
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);
- $glyph = "<span>$glyph</span>" if $prop eq 'Zs';
-
- printf "\n".'<td class="%s" title="%s">%s',
- join(' ', @class), quote($desc), $glyph;
+ print "\n".$glyphs->glyph_cell($glyph);
+ }
+ continue {
+ $offset += $colsize;
}
print "\n";
}
- print "</table>\n";
+ say '</table></div>';
}
-print "</ul>\n";
-
:>
<hr>
-<p class="footer">
- <a href="http://sheet.shiar.nl/" rel="home">sheet.shiar.nl</a>/charset
- <a href="git://git.shiar.nl/sheet" rel="vcs-git" title="Git repository"><:= "v$VERSION" :></a>
- created by <a href="http://shiar.nl/" rel="author">Shiar</a> •
- <a title="Licensed under the GNU Affero General Public License, version 3" rel="copyright"
- href="http://www.fsf.org/licensing/licenses/agpl-3.0.html">AGPLv3</a> •
- last update <:
- use Time::Format qw(time_format);
- print time_format('yyyy-mm-dd', (stat $ENV{SCRIPT_FILENAME})[9]);
- :>
-</p>
-
-</html>
+<div class="legend">
+ <table class="glyphs"><tr>
+ <td class="X Cc">control
+ <td class="X Zs"><span>whitespace</span>
+ <td class="X Mn">diacritic<table class="glyphs"><tr>
+ <td class="X Sk">letter
+ </table>
+ <td class="X Po">punctuation<table class="glyphs"><tr>
+ <td class="X Pf">quote
+ </table>
+ <td class="X So">symbol<table class="glyphs"><tr>
+ <td class="X Sm">math
+ <td class="X Sc">currency
+ </table>
+ <td class="X No">numeric
+ <td class="X Greek">greek<table class="glyphs"><tr>
+ <td class="X Latin">latin
+ <td class="X Cyrillic">cyrillic
+ </table>
+ <td class="X Aramaic">aramaic<table class="glyphs"><tr>
+ <td class="X Brahmic">brahmic
+ <td class="X Arabic">arabic
+ </table>
+ <td class="X Syllabic">syllabic<table class="glyphs"><tr>
+ <td class="X African">african
+ <td class="X Hiragana">japanese
+ <td class="X Han">cjk
+ <td class="X Bopomofo">chinese
+ </table>
+ <td class="X Alpha">alphabetic
+ </table>
+
+ <table class="glyphs"><tr>
+ <td class="X">unicode 7.0
+ <td class="X Xr">proposed
+ <td class="X Xd">deprecated
+ <td class="">unassigned
+ <td class="X Xi">invalid
+ </table>
+</div>
+