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package IRC::Formatting::HTML::Common; |
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use warnings; |
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use strict; |
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use Exporter 'import'; |
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4025
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our @EXPORT = qw/$BOLD $COLOR $COLORM $RESET $INVERSE $UNDERLINE |
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$COLOR_SEQUENCE $FORMAT_SEQUENCE @COLORS/; |
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our @EXPORT_OK = qw/html_color_to_irc color_distance hex_color_to_dec rgb_str_to_dec style_tag/; |
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our $BOLD = "\002", |
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our $COLOR = "\003"; |
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our $COLORM = qr/^$COLOR/; |
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our $RESET = "\017"; |
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our $INVERSE = "\026"; |
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our $UNDERLINE = "\037"; |
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our $COLOR_SEQUENCE = qr/([0-9]{1,2})(?:,([0-9]{1,2}))?/; |
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my $COLOR_SEQUENCE_NC = qr/[0-9]{1,2}(?:,[0-9]{1,2})?/; |
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our $FORMAT_SEQUENCE = qr/( |
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$BOLD |
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| $COLOR$COLOR_SEQUENCE_NC? | $RESET |
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| $INVERSE |
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| $UNDERLINE) |
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/x; |
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our @COLORS = ( qw/fff 000 008 080 f00 800 808 f80 |
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ff0 0f0 088 0ff 00f f0f 888 ccc/ ); |
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my @colors_dec = do { map {hex_color_to_dec($_)} @COLORS }; |
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sub html_color_to_irc { |
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my $color = shift; |
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my $rgb; |
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if ($color =~ /^#?[a-f0-9]+$/i) { |
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$rgb = hex_color_to_dec($color); |
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} elsif ($color =~ /^rgb/) { |
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$rgb = rgb_str_to_dec($color); |
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} |
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return () unless $rgb; |
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my ($closest, $dist) = (1, 500); |
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for my $i (0 .. @colors_dec - 1) { |
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my $_rgb = $colors_dec[$i]; |
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my $_dist = color_distance($rgb, $_rgb); |
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if ($_dist < $dist) { |
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($closest, $dist) = ($i, $_dist); |
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} |
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last if $dist == 0; |
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} |
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return sprintf "%02s", $closest; |
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} |
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sub color_distance { |
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0
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my ($a, $b) = @_; |
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my $distance = 0; |
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for (0 .. 2) { |
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354
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my $_a = $a->[$_]; |
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354
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my $_b = $b->[$_]; |
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$distance += ($_b - $_a) ** 2; |
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} |
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118
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return (int (sqrt($distance) * 10)) / 10; |
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} |
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sub rgb_str_to_dec { |
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my $color = shift; |
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if ($color =~ /^rgba? \s* \( \s* (\d+) \s* , \s* (\d+) \s* , \s* (\d+) \s* \)/xi) { |
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return [$1, $2, $3]; |
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} |
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0
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return (); |
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} |
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sub hex_color_to_dec { |
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0
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my $color = shift; |
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if (substr($color, 0, 1) eq "#") { |
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$color = substr $color, 1; |
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} |
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if (length $color == 3) { |
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$color = join "", map {$_ x 2} split "", $color; |
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} |
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my @rgb = ($color =~ /([a-f0-9]{2})/gi); |
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if (@rgb == 3) { |
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return [ map {hex $_} @rgb ]; |
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11701
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} |
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0
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return (); |
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} |
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sub style_tag { |
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my $style = ""; |
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return $style; |
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} |
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1; |