<(common.inc.plp)><:
+my $mode = exists $get{compare};
+my @tablist = split m{/+}, $Request || 'default';
+
Html({
title => 'charset cheat sheet',
- version => '1.0',
+ version => '1.1',
description => [
"Reference sheet with all glyphs in common character encoding tables,",
"and an overview of Unicode ranges and UTF-8 bytes.",
reference common overview table
'],
stylesheet => [qw'light'],
- data => [qw'charset-unicode.inc.pl charset-utf8.inc.pl'],
+ data => [qw(
+ charset-encoding.inc.pl
+ charset-unicode.inc.pl charset-ucplanes.inc.pl charset-utf8.inc.pl
+ )],
});
-my @tablist = split /[^\w-]+/, $Request || 'default';
+use List::Util qw( first pairmap pairfirst pairs );
:>
-<h1>Character encoding</h1>
+<h1>Character encodings</h1>
+
+<p>
+<:
+if ($tablist[0] eq 'default') {
+ say "Overview of Unicode allocation and common latin code pages.";
+ say "Compare alternate charsets:";
+}
+else {
+ say "Charset comparison:";
+}
+
+print join " •\n", (
+ map {
+ join " ·\n", pairmap {
+ showlink($b || ucfirst $a, '/charset'.($a && "/$a?compare"), $a eq $Request);
+ } @{$_}
+ }
+ [
+ iso => 'ISO',
+ win => 'Windows',
+ 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,
+ ],
+);
+:>.
+</p>
<:
use POSIX qw( ceil );
my $glyphs = Shiar_Sheet::FormatChar->new;
my @request;
+my $charsets = do 'charset-encoding.inc.pl'
+ or Alert('Encoding metadata could not be read', $@ || $!);
+
sub tabinput {
# generate character table(s)
my $input = shift or return;
+ my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
+ my $charset = $charsets->{lc $input} || {};
- state $ALIAS = {
- default => [qw( unicode+0-639 utf-8 iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
- us => [qw( cp437 cp863 AdobeStandardEncoding gsm0338 )],
- ebcdic => [qw( cp37 cp500 cp875 cp1026 cp1047 posix-bc )],
- iso => [map {"iso-8859-$_"} 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 )],
-
- 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 )],
- 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 )], # MacUkrainian is broken
- arabic => [qw( iso-8859-6 cp1006 cp864 cp1256 MacArabic )], # MacFarsi same as MacArabic?
- greek => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869 )],
- hebrew => [qw( iso-8859-8 cp1255 MacHebrew cp862 )],
- 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;
+ if (ref $charset ne 'HASH') {
+ $params and Alert("Parameters ignored for $input",
+ "Cannot apply <q>$params</q> to multiple charsets.",
+ );
+ tabinput($_) for ref $charset ? @{$charset} : $charset;
return;
}
- state $visible = {}; # all present tables
+ state $visible = {'' => 1}; # all present tables
my %row = (offset => 0, cols => 16);
- my $endpoint = 255;
- my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
if (not defined $params) {
- use List::Util qw( first pairfirst pairs );
-
- state $INHERIT = {
- 'cp437' => ['cp850' => 0], # ascii range overridden later
- 'gsm0338' => ['ascii' => '0-127'],
-
- 'iso-8859-2' => ['iso-8859-1' => '160'],
- 'iso-8859-3' => ['iso-8859-1' => '160'],
- 'iso-8859-4' => ['iso-8859-2' => '160'],
- 'iso-8859-5' => ['iso-8859-1' => '160'],
- 'iso-8859-6' => ['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'],
- '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'],
- 'cp874' => ['iso-8859-11' => '128-159', 'cp1252' => '128'], # windows-874 actually cp1162
- 'cp1257' => ['iso-8859-13' => '128', 'cp1252' => '128'],
- 'cp1251' => ['cp1252' => '128'],
- 'cp1253' => ['cp1252' => '128'],
- 'cp1255' => ['iso-8859-8' => '128-223', 'cp1252' => '128'],
- 'cp1256' => ['cp1252' => '128'],
- 'cp1258' => ['cp1252' => '128'],
-
- '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' => '128-239', 'cp437' => '128'],
- 'cp775' => ['cp850' => '128'], # partial cp437
- 'cp866' => ['cp437' => '128'],
- 'cp855' => ['cp437' => '128'],
- 'cp1006' => ['cp437' => '128'],
- 'cp737' => ['cp437' => '128'],
- 'cp869' => ['cp437' => '128'],
- 'cp862' => ['cp437' => '128'],
- 'cp864' => ['cp437' => '128'],
-
- 'koi8-u' => ['koi8-r' => 128],
- 'koi8-f' => ['koi8-u' => 128],
-
- 'MacRomanian' => ['MacRoman' => '160'],
- 'MacCroatian' => ['MacRoman' => '160'],
- 'MacCentralEurRoman' => ['MacRoman' => '128'],
- 'MacTurkish' => ['MacRoman' => '208-223'], # F5 is unassigned
- 'MacCyrillic' => ['MacRoman' => '128'],
- 'MacHebrew' => ['MacRoman' => '128'],
- };
-
- my @parents = @{ $INHERIT->{$input} || [] };
+ my @parents = @{ $charset->{inherit} || [] };
if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
$row{parent} = $parent;
$params = $part;
- $params = 128 unless $visible->{$parent}
+ $params = 80 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
+ $params = $parents[1] // 80;
+ $params = 80 if hex $params >= 0x80; # ascii offset at most
}
elsif (@parents) {
$row{parent} = $parents[0];
+ $params = $parents[1] if hex $parents[1] == 0; # apply ascii end
}
- $visible->{$_} //= 0 for $row{parent};
+ $visible->{$_} //= 0 for $row{parent} || ();
}
- if (defined $params) {
- $params =~ m{
- \A (?<offset> \d+)
- (?: [-] (?<endpoint> \d+) )? \z
- }x or Alert([
- "Unknown range parameters for $input",
- "<q>$params</q> is not in format start(-end)",
- ]);
-
- $row{offset} = $+{offset};
- $endpoint = $+{endpoint} if $+{endpoint};
+ 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 (?<start> \p{AHex}+) (?: [-] (?<end> \p{AHex}+) )? \z }x) {
+ if (defined $row{endpoint}) {
+ # extend earlier range
+ my $skip = int(($row{endpoint} || $row{startpoint}) / $row{cols});
+ for ($skip + 1 .. (hex($+{start}) / $row{cols}) - 1) {
+ $row{skip}->{ $_ * $row{cols} - $row{startpoint} }++;
+ }
+ }
+ else {
+ $row{startpoint} = hex $+{start};
+ }
+ $row{endpoint} = hex($+{end} || 0);
+ }
+ else {
+ Alert("Unknown option <q>$param</q> for charset $input");
+ }
}
- if ($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{endpoint} = $end + 14 - $start;
- $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
+ if ($charset->{setup}) {
+ eval { $charset->{setup}->(\%row) }
+ or Alert("Incomplete setup of $input", $@);
}
- elsif ($input eq 'U') {
- $row{set} = 'Unicode planes';
- $row{cell} = do 'charset-ucplanes.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
- $row{cols} *= 2;
- $row{endpoint} = 1023 * $row{cell}->{colsize};
+ $row{endpoint} ||= 0xFF;
+
+ if (defined $row{table} or defined $row{cell}) {
+ $row{set} //= $input;
}
elsif ($row{set} = Encode::resolve_alias($input)) {
- if ($row{set} eq 'Internal') {
- $row{set} = 'Unicode BMP';
- $row{cell} = do 'charset-unicode.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
- $row{endpoint} = ($endpoint || 8191) * $row{cell}->{colsize};
- }
- elsif ($row{set} eq 'utf-8-strict') {
- $row{set} = 'UTF-8';
- $row{cell} = do 'charset-utf8.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
- $row{endpoint} = 255;
+ $row{offset} = delete $row{startpoint};
+ if ($charset->{varchar}) {
+ # array of possibly multiple characters per code point
+ $row{table} = [
+ map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $row{endpoint}
+ ];
}
else {
- if ($row{set} eq 'MacHebrew') {
- # array of possibly multiple characters per code point
- $row{table} = [
- map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $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} .. $endpoint);
- }
- $row{endpoint} = $endpoint - $row{offset};
-
- if ($row{set} eq 'cp437' and !$row{offset}) {
- substr($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
- );
- }
-
- $visible->{ascii} = # assume common base
- $visible->{ $row{set} } = 1;
+ # ~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};
+ $visible->{ascii}++; # assume common base
}
else {
Alert("Encoding <q>$input</q> unknown");
return;
}
+
+ if (my $replace = $charset->{replace}) {
+ while (my ($offset, $sub) = each %{$replace}) {
+ $offset -= $row{offset};
+
+ if (ref $row{table} eq 'ARRAY') {
+ $row{table}->[$offset] = $sub
+ if $offset >= 0 and $offset <= $row{endpoint};
+ next;
+ }
+
+ my $length = length $sub;
+
+ if ($offset < 0) {
+ $offset > -$length or next; # at least one character after start
+ # trim leftmost part to start at offset
+ substr($sub, 0, -$offset) = '';
+ $length += $offset;
+ $offset = 0;
+ }
+
+ if ((my $excess = $row{endpoint} - $offset - $length + 1) < 0) {
+ $excess > -$length or next;
+ # trim rightmost part to prevent overflow
+ substr($sub, $excess) = '';
+ $length += $excess;
+ }
+
+ substr($row{table}, $offset, $length) = $sub;
+ }
+ }
+
push @request, \%row;
+ $visible->{ $row{set} } = 1 if $row{table};
}
tabinput($_) for @tablist;
$len /= $colsize;
$name //= $len <= 2 ? 'res' : 'reserved';
- if (my $part = $offset/$colsize % $cols) {
+ if (my $part = ($offset/$colsize - $info->{startpoint}) % $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");
+ my $separate = $cols - $len > $rest; # columns not on next row
if ($len > $rest) {
# minority remains
push @next, $name, $title;
$title ||= $name;
- $name = '';
+ $name = $separate && '…';
}
else {
# minority on next row
- push @next, '"', $title || $name;
+ push @next, $separate && '"', $title || $name;
}
$table->{$offset + $colsize*$rest} //= \@next;
$class .= ' joind';
}
elsif (my $rows = int($len / $cols)) {
# multiple full rows
+ my $rowsize = $colsize * $cols;
if ($len -= $rows * $cols) {
# partial row remains
- $table->{$offset + $colsize*$rows * $cols} //= [$len*$colsize, "$class joinu", '', $title];
+ $table->{$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 .= $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>$name";
+ return "<td$attr>$name\n";
}
for my $row (@request) {
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 $offset = $row->{startpoint} * $colsize || 0;
printf '<div class="section"><table class="glyphs%s">', !$row->{cell} && ' charmap';
my $title = $row->{set};
$title .= " <aside>(over $_)</aside>"
- for grep { $_ ne 'iso-8859-1' } $row->{parent} // ();
+ for $row->{parent} || ();
printf '<caption>%s</caption>', $title;
print '<col>' x ($cols + 1);
for my $section (qw{thead}) {
printf '<th>%0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1;
print "\n";
}
+
print '<tbody>';
- while ($offset < $row->{endpoint}) {
+ while ($offset <= $row->{endpoint} * $colsize) {
+ if ($row->{skip}->{$offset}) {
+ $offset += $cols * $colsize;
+ next;
+ }
+
print '<tr><th>';
- {
+ if (defined $row->{skip}->{$offset}) {
+ print '⋮';
+ }
+ else {
if (my $rowmod = $offset % $rowdiv) {
# offset in column units
printf '<small>+%X</small>', $rowmod;
printf '%X', ($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}, $offset, 1;
- if ($glyph eq $NOCHAR) {
- print '<td>';
- next;
- }
+ my ($cell, $name, $class) = !defined $glyph || $glyph eq $NOCHAR ? () :
+ $glyphs->glyph_html($glyph);
- if (exists $get{compare}) {
+ if ($mode) {
state $visible = {};
- my $cp = $offset + $row->{offset};
- printf '<td class="%s" title="%3$s">%2$s',
+ $class = (
$cp == ord $glyph ? 'l4' :
$row->{parent} && $glyph eq
Encode::decode($row->{parent}, pack 'C', $cp) ? 'l3' :
+ !$class ? undef :
$visible->{$glyph} ? 'l2' :
- 'l1',
- $glyphs->glyph_html($glyph);
+ 'l1'
+ );
$visible->{$glyph}++;
- next;
}
- print "\n".$glyphs->glyph_cell($glyph);
+ say sprintf $class ? '<td title="%s" class="X %s">%s' : '<td title="%s">',
+ $name, $class, $cell;
}
continue {
$offset += $colsize;
}
- print "\n";
}
say '</table></div>';
}
<hr>
<div class="legend">
- <table class="glyphs"><tr><: if (exists $get{compare}) { :>
+ <table class="glyphs"><tr><: if ($mode) { :>
<td class="X l4">unicode
<td class="X l3">inherited
<td class="X l2">existing
git.shiar.nl / sheet.git / blobdiff