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package IRC::Formatting::HTML::Output;
use warnings;
use strict;
use IRC::Formatting::HTML::Common;
my ($b, $i, $u, $fg, $bg);
my $italic_invert = 0;
my $use_classes = 0;
sub _parse_formatted_string {
my $line = shift;
_reset();
my @segments;
my @chunks = ("", split($FORMAT_SEQUENCE, $line));
$line = "";
while (scalar(@chunks)) {
my $format_sequence = shift(@chunks);
my $text = shift(@chunks);
_accumulate($format_sequence);
next unless defined $text and length $text;
$text =~ s/ {2}/  /g;
if ($use_classes) {
$line .= "<span class=\"" . _to_classes()."\">$text</span>";
} else {
$line .= "<span style=\"" . _to_css()."\">$text</span>";
}
}
return $line;
}
sub _reset {
($b, $i, $u) = (0, 0, 0);
undef $fg;
undef $bg;
}
sub _accumulate {
my $format_sequence = shift;
if ($format_sequence eq $BOLD) {
$b = !$b;
}
elsif ($format_sequence eq $UNDERLINE) {
$u = !$u;
}
elsif ($format_sequence eq $INVERSE) {
$i = !$i;
}
elsif ($format_sequence eq $RESET) {
_reset;
}
elsif ($format_sequence =~ $COLORM) {
($fg, $bg) = _extract_colors_from($format_sequence);
}
}
sub _extract_colors_from {
my $format_sequence = shift;
$format_sequence = substr($format_sequence, 1);
my ($_fg, $_bg) = ($format_sequence =~ $COLOR_SEQUENCE);
if (! defined $_fg) {
return undef, undef;
}
elsif (! defined $_bg) {
return $_fg, $bg;
}
else {
return $_fg, $_bg;
}
}
sub _to_css {
my $styles = "";
my ($_fg, $_bg);
# italicize inverted text if that option is set
if ($i) {
if ($italic_invert) {
$styles .= "font-style: italic;";
($_fg, $_bg) = ($fg, $bg);
} else {
($_fg, $_bg) = ($bg || 0, $fg || 1);
}
} else {
($_fg, $_bg) = ($fg, $bg);
}
$styles .= "color: #$COLORS[$_fg];" if defined $_fg and $COLORS[$_fg];
$styles .= "background-color: #$COLORS[$_bg];" if defined $_bg and $COLORS[$_bg];
$styles .= "font-weight: bold;" if $b;
$styles .= "text-decoration: underline;" if $u;
return $styles;
}
sub _to_classes {
my @classes;
my ($_fg, $_bg);
# italicize inverted text if that option is set
if ($i) {
if ($italic_invert) {
push @classes, "italic";
($_fg, $_bg) = ($fg, $bg);
} else {
($_fg, $_bg) = ($bg || 0, $fg || 1);
}
} else {
($_fg, $_bg) = ($fg, $bg);
}
push @classes, "fg-$COLORS[$_fg]" if defined $_fg and $COLORS[$_fg];
push @classes, "bg-$COLORS[$_bg]" if defined $_bg and $COLORS[$_bg];
push @classes, "bold" if $b;
push @classes, "ul" if $u;
return join " ", @classes;
}
sub parse {
my ($string, $italic, $classes) = @_;
$italic_invert = 1 if $italic;
$use_classes = 1 if $classes;
_encode_entities(\$string);
my $text = join "\n",
map {_parse_formatted_string($_)}
split "\n", $string;
$italic_invert = 0;
$use_classes = 0;
return $text;
}
sub _encode_entities {
my $string = shift;
return unless $string;
$$string =~ s/&/&/g;
$$string =~ s/</</g;
$$string =~ s/>/>/g;
$$string =~ s/"/"/g;
}
1;
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