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Dir : ~/usr/share/doc/libhtml-parser-perl/examples/

View File Name : hanchors

#!/usr/bin/perl -w

# This program will print out all <a href=".."> links in a
# document together with the text that goes with it.
#
# See also HTML::LinkExtor

use HTML::Parser;
use Encode;

my $p = HTML::Parser->new(api_version => 3,
     start_h => [\&a_start_handler, "self,tagname,attr"],
     report_tags => [qw(a img)],
    );
$p->parse_file(shift || die) || die $!;

sub a_start_handler
{
    my($self, $tag, $attr) = @_;
    return unless $tag eq "a";
    return unless exists $attr->{href};
    print "A $attr->{href}\n";

    $self->handler(text  => [], '@{dtext}' );
    $self->handler(start => \&img_handler);
    $self->handler(end   => \&a_end_handler, "self,tagname");
}

sub img_handler
{
    my($self, $tag, $attr) = @_;
    return unless $tag eq "img";
    push(@{$self->handler("text")}, $attr->{alt} || "[IMG]");
}

sub a_end_handler
{
    my($self, $tag) = @_;
    my $text = encode('utf8',join("", @{$self->handler("text")}));
    $text =~ s/^\s+//;
    $text =~ s/\s+$//;
    $text =~ s/\s+/ /g;
    print "T $text\n";

    $self->handler("text", undef);
    $self->handler("start", \&a_start_handler);
    $self->handler("end", undef);
}