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|
package IRC::Formatting::HTML::Input;
use warnings;
use strict;
use IRC::Formatting::HTML::Common;
use HTML::Parser ();
my $p = HTML::Parser->new(api_version => 3,
text_h => [\&_text, 'dtext'],
start_h => [\&_tag_start, 'tagname, attr'],
end_h => [\&_tag_end, 'tagname']);
my $nbsp = chr(160);
my @states;
my $irctext = "";
sub parse {
$irctext = "";
_reset();
my $html = shift;
$html =~ s/\n//;
$p->parse($html);
$p->eof;
$irctext =~ s/\n{2,}/\n/;
$irctext =~ s/^\n+//;
$irctext =~ s/\n+$//;
return $irctext;
}
sub _reset {
@states = ({
b => 0,
i => 0,
u => 0,
fg => "",
bg => "",
});
}
sub _text {
my $text = shift;
$text =~ s/$nbsp/ /g;
$irctext .= $text if defined $text and length $text;
}
sub clone {
my $state = $states[0];
return {
b => $state->{b},
i => $state->{i},
u => $state->{u},
fg => $state->{fg},
bg => $state->{bg},
};
}
sub _tag_start {
my ($tag, $attr) = @_;
my $state = clone();
if ($tag eq "br" or $tag eq "p" or $tag eq "div" or $tag =~ /^h[\dr]$/) {
$irctext .= "\n";
}
if ($attr->{style}) {
if ($attr->{style} =~ /(?:^|;\s*)color:\s*([^;"]+)/) {
my $color = IRC::Formatting::HTML::Common::html_color_to_irc($1);
if ($color) {
$state->{fg} = $color;
$irctext .= $COLOR.$color;
$irctext .=",$state->{bg}" if length $state->{bg};
}
}
if ($attr->{style} =~ /font-weight:\s*bold/) {
$irctext .= $BOLD unless $state->{b};
$state->{b} = 1;
}
if ($attr->{style} =~ /font-style:\s*italic/) {
$irctext .= $INVERSE unless $state->{i};
$state->{i} = 1;
}
if ($attr->{style} =~ /text-decoration:\s*underline/) {
$irctext .= $UNDERLINE unless $state->{u};
$state->{u} = 1;
}
if ($attr->{style} =~ /background-color:\s*([^;"]+)/) {
my $color = IRC::Formatting::HTML::Common::html_color_to_irc($1);
if ($color) {
$state->{bg} = $color;
my $fg = length $state->{fg} ? $state->{fg} : "01";
$irctext .= $COLOR."$fg,$color";
}
}
}
if ($attr->{color}) {
my $color = IRC::Formatting::HTML::Common::html_color_to_irc($attr->{color});
if ($color) {
$state->{fg} = $color;
$irctext .= $COLOR.$color;
$irctext .=",$state->{bg}" if length $state->{bg};
}
}
if ($tag eq "strong" or $tag eq "b" or $tag =~ /^h\d$/) {
$irctext .= $BOLD unless $state->{b};
$state->{b} = 1;
} elsif ($tag eq "em" or $tag eq "i") {
$irctext .= $INVERSE unless $state->{i};
$state->{i} = 1;
} elsif ($tag eq "u") {
$irctext .= $UNDERLINE unless $state->{u};
$state->{u} = 1;
}
unshift @states, $state;
}
sub _tag_end {
my $tag = shift;
my $prev = shift @states;
my $next = $states[0];
$irctext .= $BOLD if $next->{b} ne $prev->{b};
$irctext .= $INVERSE if $next->{i} ne $prev->{i};
$irctext .= $UNDERLINE if $next->{u} ne $prev->{u};
if ($next->{fg} ne $prev->{fg} or $next->{bg} ne $prev->{bg}) {
$irctext .= $COLOR;
my ($fg, $bg) = ("","");
if (length $next->{fg}) {
$fg = $next->{fg};
}
if (length $next->{bg}) {
$bg = $next->{bg};
$fg = "01" unless length $fg;
}
$irctext .= $fg;
$irctext .= ",$bg" if length $bg;
}
if ($tag eq "p" or $tag eq "div" or $tag =~ /^h[\dr]$/) {
$irctext .= "\n";
}
}
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