Many of the tools used to parse HTML use
HTML::Parser under the hood, and it is worthwhile knowing how it works. This script gathers up all the content of each list item, including other elements, into a variable. When it meets the closing list item tag, you can do what you need to the content before printing it out.
use HTML::Parser;
my $inside_li = 0;
my $list_item = '';
sub start {
my ($tag, $text) = @_;
if ($inside_li) {
$list_item .= $text;
return;
}
if ($tag eq 'li') {
$inside_li = 1;
}
print $text;
};
sub text {
my ($text) = @_;
if ($inside_li) {
$list_item .= $text;
return;
}
print $text;
};
sub end {
my ($tag, $text) = @_;
if ($tag eq 'li') {
$inside_li = 0;
# do things to <li> content
$list_item =~ s/^\s+//;
print $list_item;
$list_item = '';
}
if ($inside_li) {
$list_item .= $text;
return;
}
print $text;
};
my $parser = HTML::Parser->new(
api_version => 3,
start_h => [\&start, "tagname, text"],
text_h => [\&text, "text"],
end_h => [\&end, "tagname, text"],
default_h => [\&text, "text"],
);
$parser->parse_file(\*DATA);
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.