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lib/App/SimpleScan/Plugin/LinkCheck.pm  view on Meta::CPAN

package App::SimpleScan::Plugin::LinkCheck;

$VERSION = '1.03';

use warnings;
use strict;
use Carp;

use Scalar::Util qw(looks_like_number);
use Text::Balanced qw(extract_quotelike extract_multiple);

sub import {
  no strict 'refs';
  *{caller() . '::_do_has_link'}   = \&_do_has_link;
  *{caller() . '::_do_no_link'}    = \&_do_no_link;
  *{caller() . '::link_condition'} = \&link_condition;
  *{caller() . '::_link_conditions'} = \&_link_conditions;
  *{caller() . '::_add_link_condition'} = \&_add_link_condition;

  *{caller() . '::_extract_quotelike_args'} = 
    \&_extract_quotelike_args;
}

sub pragmas {
  return ['has_link', \&_do_has_link],
         ['no_link',  \&_do_no_link],
         ['forget_link', \&_do_forget_link],
         ['forget_all_links', \&_do_forget_all];
}

sub init {
  my($class, $app) = @_;
  $app->{Link_conditions} = {};
}

sub _do_forget_all {
  my($self, $args) = @_;
  $self->{Link_conditions} = {};
}

sub _do_forget_link {
  my($self, $args) = @_;
  my @links = $self->_extract_quotelike_args($args);
  for my $link (@links) {
    delete $self->{Link_conditions}->{$link};
  }
}

sub _do_has_link {
  my($self, $args) = @_;
  my($name, $compare, $count);
  if (!defined $args) {
    $self->stack_code( qq(fail "No arguments for %%has_link";\n) );
    $self->test_count( $self->test_count() + 1 );
    return;
  }
  else {
    # Extract strings and backticked strings and just plain words.
    # We explicitly junk anything past the first three items.
    ($name, $compare, $count) = $self->_extract_quotelike_args($args);
  }
  $self->_add_link_condition( { name=>$name, compare=>$compare, count=>$count } );
}

sub _do_no_link {
  my($self, $args) = @_;
  if (!defined $args) {
    $self->stack_code( qq(fail "No arguments for %%no_link";\n) );
    $self->test_count( $self->test_count() + 1 );
  }
  else {
    my ($name) = $self->_extract_quotelike_args($args);
    $self->_do_has_link(qq($name == 0));
  }
}

sub _link_conditions {
  my ($self) = shift;
  return wantarray ? @{ $self->{Link_conditions} } : $self->{Link_conditions};
}