<(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.",
)],
});
-my @tablist = split m{/+}, $Request || 'default';
-
use List::Util qw( first pairmap pairfirst pairs );
:>
say "Charset comparison:";
}
-sub optionlink {
- my ($title, $href, $selected) = @_;
- return sprintf(
- $selected ? '<strong>%s</strong>' : '<a href="%2$s">%s</a>',
- EscapeHTML($title), $href
- );
-}
-
print join " •\n", (
map {
join " ·\n", pairmap {
- optionlink($b || ucfirst $a, '/charset'.($a && "/$a?compare"), $a eq $Request);
+ showlink($b || ucfirst $a, '/charset'.($a && "/$a?compare"), $a eq $Request);
} @{$_}
}
[
my $glyphs = Shiar_Sheet::FormatChar->new;
my @request;
-my $INHERIT = do 'charset-encoding.inc.pl'
+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 $ALIAS = {
- default => [qw( u+0-27F utf-8+realsize iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
- unicode => [qw( uu+cols=32+realsize u+0-FFF u+1000-18AF u+18B0-1FFF )],
- us => [qw( cp437 cp863 gsm0338 AdobeStandardEncoding )],
- ebcdic => [qw( cp37 cp500 cp1047 posix-bc cp1026 cp875 )],
- iso => [map {"iso-8859-$_"} 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 )],
- mac => [qw( MacRoman MacRomanian MacRumanian MacCroatian MacCentralEurRoman MacTurkish MacIcelandic MacSami
- MacGreek MacCyrillic MacHebrew MacArabic MacFarsi MacThai )],
-
- # languages
- 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 )],
- norteur => [qw( baltic nordic )],
- 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
- +400 +2DE0 +A640-A69F +500-52F )], # MacUkrainian is broken
- arabic => [qw( iso-8859-6 cp1256 MacArabic cp864 cp1006 MacFarsi
- +600 +8A0-8BF+8E0 +750-77F )],
- greek => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869 +370 +1F00 )],
- hebrew => [qw( iso-8859-8 cp1255 MacHebrew cp862 +590 )],
- thai => [qw( iso-8859-11 cp874 MacThai )],
- vietnamese => [qw( viscii cp1258 MacVietnamese )],
- symbols => [qw( symbol dingbats MacDingbats wingdings wingdings2 wingdings3 webdings )],
-
- # 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 = {'' => 1}; # all present tables
my %row = (offset => 0, cols => 16);
- my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
if (not defined $params) {
- my @parents = @{ $INHERIT->{$input} || [] };
+ my @parents = @{ $charset->{inherit} || [] };
if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
$row{parent} = $parent;
}
}
- if ($input =~ m{ \A (?:wing|web)dings \d* \z }ix) {
- eval "require Encode::\u$input";
+ if ($charset->{setup}) {
+ eval { $charset->{setup}->(\%row) }
+ or Alert("Incomplete setup of $input", $@);
}
+ $row{endpoint} ||= 0xFF;
- if ($input eq '') {
- $row{offset} = delete $row{startpoint};
- $row{set} = 'Unicode characters';
- my $block = $row{offset} >> 8;
- $row{endpoint} ||= ($block + 1 << 8) - 1;
- $block == ($row{endpoint} >> 8) or undef $block;
-
- $row{table} = join '', map { chr } $row{offset} .. $row{endpoint};
- utf8::upgrade($row{table}); # prevent latin1 output
-
- $row{endpoint} -= $row{offset};
-
- if (defined $block) {
- $row{set} = sprintf 'Unicode block U+%02Xxx', $block;
- $row{offset} %= 0x100;
- }
- }
- elsif (lc $input eq 'uu') {
- $row{cell} = do 'charset-ucplanes.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
- $row{endpoint} ||= 0x3FF;
- $row{set} = 'Unicode planes';
- }
- elsif (lc $input eq 'u') {
- $row{cell} = do 'charset-unicode.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
-
- $row{endpoint} ||= 0x1FFF;
- $row{set} = 'Unicode ' . (
- $row{startpoint} < 0x1000 && $row{endpoint} < 0x1000 ? 'BMP' :
- $row{startpoint} >= 0x1000 && $row{endpoint} < 0x2000 ? 'SMP' :
- 'allocations'
- );
- }
- elsif ($input =~ m/^utf-*8$/i) {
- $row{set} = 'UTF-8';
- $row{cell} = do 'charset-utf8.inc.pl'
- or Alert('Table data could not be read', $@ || $!);
- $row{endpoint} = 0xFF;
+ if (defined $row{table} or defined $row{cell}) {
+ $row{set} //= $input;
}
elsif ($row{set} = Encode::resolve_alias($input)) {
$row{offset} = delete $row{startpoint};
- $row{endpoint} ||= 0xFF;
- if ($row{set} eq 'MacHebrew' or $row{set} eq 'MacThai') {
+ if ($charset->{varchar}) {
# array of possibly multiple characters per code point
$row{table} = [
map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $row{endpoint}
$row{table} = Encode::decode($row{set}, pack 'C*', $row{offset} .. $row{endpoint});
}
- if ($row{set} eq 'cp437') {
- if ($row{offset} <= 0xED and $row{endpoint} >= 0xED) {
- # replace phi glyph
- substr($row{table}, 0xED - $row{offset}, 1) = 'ϕ';
- }
- if ($row{offset} < 0x20) {
- # replace control characters by visible variants
- my $sub = substr ' ☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼', $row{offset};
- substr($row{table}, 0, length $sub) = $sub;
- }
- }
- elsif ($row{set} eq 'symbol') {
- if ($row{offset} <= 0x60 and $row{endpoint} >= 0x60) {
- # replace radical extender by closest unicode equivalent
- substr($row{table}, 0x60 - $row{offset}, 1) = '│';
- }
- if ($row{offset} <= 0xBD and $row{endpoint} >= 0xFF) {
- substr($row{table}, 0xBD - $row{offset}, 2) = '⏐⎯'; # arrow extenders
- substr($row{table}, 0xD2 - $row{offset}, 3) = '®©™'; # serif variants
- substr($row{table}, 0xE0 - $row{offset}, 1) = '◊'; # replace lookalike, should match AdobeSymbol
- substr($row{table}, 0xE2 - $row{offset}, 3) = '®©™'; # sans-serif variants
- substr($row{table}, 0xE6 - $row{offset}, 10) = '⎛⎜⎝⎡⎢⎣⎧⎨⎩⎪';
- substr($row{table}, 0xF0 - $row{offset}, 1) = '€';
- substr($row{table}, 0xF4 - $row{offset}, 11) = '⎮⌡⎞⎟⎠⎤⎥⎦⎫⎬⎭';
- }
- }
-
$row{endpoint} -= $row{offset};
-
- $visible->{ascii} = # assume common base
- $visible->{ $row{set} } = 1;
+ $visible->{ascii}++; # assume common base
}
else {
Alert("Encoding <q>$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;
my $cp = $offset + $row->{offset};
my $glyph = ref $row->{table} eq 'ARRAY' ? $row->{table}->[$offset] :
substr $row->{table}, $offset, 1;
- my ($cell, $name, $class) = $glyph eq $NOCHAR ? () :
+ my ($cell, $name, $class) = !defined $glyph || $glyph eq $NOCHAR ? () :
$glyphs->glyph_html($glyph);
- if (exists $get{compare}) {
+ if ($mode) {
state $visible = {};
$class = (
$cp == ord $glyph ? 'l4' :
<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