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# Copyright (c) 2004-2009 Timothy Appnel |
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# http://appnel.com/ |
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# This code is released under the Artistic License. |
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# |
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# XML::RAI::Object - A base class for RAI element objects. |
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# |
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package XML::RAI::Object; |
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use strict; |
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use Date::Parse 2.26; |
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use Date::Format 2.22; |
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use Scalar::Util qw(weaken); |
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sub new { |
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my $class = shift; |
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my $self = bless {}, $class; |
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$self->init(@_); |
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$self; |
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} |
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sub init { |
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$_[0]->{__source} = $_[1]; |
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$_[0]->{__parent} = $_[2]; |
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$_[0]->{__RAI} = $_[2]; |
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while ($_[0]->{__RAI}->can('parent')) { |
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$_[0]->{__RAI} = $_[0]->{__RAI}->parent; |
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} |
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weaken($_[0]->{__parent}); |
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weaken($_[0]->{__RAI}); |
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} |
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sub src { $_[0]->{__source} } |
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sub parent { $_[0]->{__parent} } |
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sub add_mapping { |
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my ($class, $var, @maps) = @_; |
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no strict 'refs'; |
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${"${class}::XMap"}->{$var} = [] |
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unless (exists ${"${class}::XMap"}->{$var}); |
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push @{${"${class}::XMap"}->{$var}}, @maps; |
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} |
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sub generic_handler { |
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my ($this, $class, $var) = @_; |
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no strict 'refs'; |
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foreach (@{${$class . '::XMap'}->{$var}}) { |
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my @nodes = $this->src->query($_); |
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if (defined($nodes[0])) { |
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@nodes = map { |
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!ref($_) ? $_ |
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: substr($_->name, 0, 30) eq |
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'{http://www.w3.org/1999/xhtml}' ? join '', |
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map { as_xhtml($_) } @{$_->contents} |
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: $_->text_content; |
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} @nodes; |
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return wantarray ? @nodes : $nodes[0]; |
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} |
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} |
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return undef; |
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} |
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sub time_handler { |
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my @r = generic_handler(@_); |
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return undef unless $r[0]; |
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my $timef = $_[0]->{__RAI}->time_format; |
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if ($timef eq 'EPOCH') { |
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map { $_ = str2time($_, 0) } @r; |
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} |
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elsif ($timef) { |
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map { $_ = time2str($timef, str2time($_, 0), 0) } @r; |
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} |
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wantarray ? @r : $r[0]; |
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} |
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use XML::RSS::Parser::Util qw(as_xml); |
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sub as_xhtml { # a hack to get xhtml content as we'd expect. |
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my $xml = as_xml($_[0]); |
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$xml =~ s{<(/?)xhtml:}{<$1}g; |
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$xml; |
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} |
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sub DESTROY { } |
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use vars qw( $AUTOLOAD ); |
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sub AUTOLOAD { |
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(my $var = $AUTOLOAD) =~ s!.+::!!; |
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(my $class = $AUTOLOAD) =~ s!::[^:]+$!!; |
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no strict 'refs'; |
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die "$var is not a recognized method." |
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unless (${$class . '::XMap'}->{$var}); |
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if ($var =~ m/^(created|modified|issued|valid)(_strict)?$/) { |
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*$AUTOLOAD = sub { time_handler($_[0], $class, $var) }; |
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} |
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else { |
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*$AUTOLOAD = sub { generic_handler($_[0], $class, $var) }; |
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} |
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goto &$AUTOLOAD; |
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} |
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1; |
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__END__ |