#!/usr/bin/perl
# This script will assume that the first command line argument
# is a file containing HTML, and return a version
# where all the tags are converted to lowercase.
use strict;
use warnings;
use HTML::Parser ();
HTML::Parser->new(
start_h => [\&start_lc, "tokenpos, text"],
end_h => [sub { print lc shift }, "text"],
default_h => [sub { print shift }, "text"],
)->parse_file(shift)
|| die "Can't open file: $!\n";
sub start_lc {
my ($tpos, $text) = @_;
for (my $i = 0; $i < @$tpos; $i += 2) {
next if $i && ($i / 2) % 2 == 0; # skip attribute values
$_ = lc $_ for substr($text, $tpos->[$i], $tpos->[$i + 1]);
}
print $text;
}
