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lib/CGI/Kwiki/Formatter.pm  view on Meta::CPAN

    $self->code_postformat($self->code_preformat($text));
}

sub code_preformat {
    my ($self, $text) = @_;
    my ($indent) = sort { $a <=> $b } map { length } $text =~ /^( *)\S/mg;
    $text =~ s/^ {$indent}//gm;
    return $self->escape_html($text);
}

sub code_postformat {
    my ($self, $text) = @_;
    return "<blockquote><pre>$text</pre></blockquote>\n";
}

sub escape_html {
    my ($self, $text) = @_;
    $text =~ s/&/&amp;/g;
    $text =~ s/</&lt;/g;
    $text =~ s/>/&gt;/g;
    $text;
}

sub lists {
    my ($self, $text) = @_;
    my $switch = 0;
    return map {
        my $level = 0;
        my @tag_stack;
        if ($switch++ % 2) {
            my $text = '';
            my @lines = /(.*\n)/g;
            for my $line (@lines) {
                $line =~ s/^([0\*]+) //;
                my $new_level = length($1);
                my $tag = ($1 =~ /0/) ? 'ol' : 'ul';
                if ($new_level > $level) {
                    for (1..($new_level - $level)) {
                        push @tag_stack, $tag;
                        $text .= "<$tag>\n";
                    }
                    $level = $new_level;
                }
                elsif ($new_level < $level) {
                    for (1..($level - $new_level)) {
                        $tag = pop @tag_stack;
                        $text .= "</$tag>\n";
                    }
                    $level = $new_level;
                }
                $text .= "<li>$line";
            }
            for (1..$level) {
                my $tag = pop @tag_stack;
                $text .= "</$tag>\n";
            }
            $_ = $self->lists_format($text);
        }
        $_;
    }
    split m!(^[0\*]+ .*?\n)(?=(?:[^0\*]|$))!ms, $text;
}

sub lists_format {
    my ($self, $text) = @_;
    return $text;
}

sub paragraph {
    my ($self, $text) = @_;
    my $switch = 0;
    return map {
        unless ($switch++ % 2) {
            $_ = $self->paragraph_format($_);
        }
        $_;
    }
    split m!(\n\s*\n)!ms, $text;
}

sub paragraph_format {
    my ($self, $text) = @_;
    return '' if $text =~ /^[\s\n]*$/;
    return $text if $text =~ /^<(o|u)l>/i;
    return "<p>\n$text\n</p>\n";
}

sub horizontal_line {
    my ($self, $text) = @_;
    $self->split_method($text,
        qr{(^----+\n)}m,
        'horizontal_line_format',
    );
}

sub horizontal_line_format {
    my ($self) = @_;
    my $text = "<hr>\n";
    if ($slide_num) {
        my $page_id = $self->cgi->page_id;
	my $go = $self->loc('Go');
        $text .= qq{<a target="SlideShow" href="index.cgi?action=slides&page_id=$page_id&slide_num=$slide_num">$go</a>\n};
        $slide_num++;
    }
    return $text;
}

sub comment {
    my ($self, $text) = @_;
    $self->split_method($text,
        qr{^\# (.*)\n}m,
        'comment_line_format',
    );
}

sub comment_line_format {
    my ($self, $text) = @_;
    return "<!-- $text -->\n";
}

for my $num (1..6) {
    no strict 'refs';
    *{"header_$num"} = 
    sub {
        my ($self, $text) = @_;
        $self->split_method($text,
            qr{^={$num} (.*?)(?: ={$num})?\n}m,
            "header_${num}_format",
        );
    };
    *{"header_${num}_format"} = 
    sub {
        my ($self, $text) = @_;
        return "<h$num>$text</h$num>\n";
    };
}

1;