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I'm trying to remove unused spans (i.e. those with no attribute) from HTML files, having already cleaned up all the attributes I didn't want with other regular expressions.
I'm having a problem with my regex not picking the correct pair of start and end tags to remove.
my $a = 'a <span>b <span style="color:red;">c</span> d</span>e';
$a =~ s/<span\s*>(.*?)<\/span>/$1/g;
print "$a\
returns
a b <span style="color:red;">c d</span>e
but I want it to return
a b <span style="color:red;">c</span> de
Help appreciated.
760
Try HTML::Parser:
#!/usr/bin/perl
use strict;
use warnings;
use HTML::Parser;
my @print_span;
my $p = HTML::Parser->new(
start_h => [ sub {
my ($text, $name, $attr) = @_;
if ( $name eq 'span' ) {
my $print_tag = %$attr;
push @print_span, $print_tag;
return if !$print_tag;
}
print $text;
}, 'text,tagname,attr'],
end_h => [ sub {
my ($text, $name) = @_;
if ( $name eq 'span' ) {
return if !pop @print_span;
}
print $text;
}, 'text,tagname'],
default_h => [ sub { print shift }, 'text'],
);
$p->parse_file(\*DATA) or die "Err: $!";
$p->eof;
__END__
<html>
<head>
<title>This is a title</title>
</head>
<body>
<h1>This is a header</h1>
a <span>b <span style="color:red;">c</span> d</span>e
</body>
</html>
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