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//usr/share/doc/perl-HTML-Parser-3.64/eg/hlc
#!/usr/bin/perl -w use strict; 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; }
