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# $Id: LibXSLT.pm,v 1.4 2002/02/25 13:08:55 matt Exp $ |
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package XML::Filter::XSLT::LibXSLT; |
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use strict; |
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use XML::LibXSLT; |
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use XML::LibXML::SAX::Builder; |
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use XML::LibXML::SAX::Parser; |
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use vars qw(@ISA); |
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@ISA = qw(XML::LibXML::SAX::Builder); |
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sub new { |
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my $class = shift; |
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my %params = @_; |
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my $self = bless \%params, $class; |
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return $self; |
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} |
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sub set_stylesheet_uri { |
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# hey look, now it does what the synopsis says it can.. ;-> |
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my $self = shift; |
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my $uri = shift; |
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$self->{Source}{SystemId} = $uri; |
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} |
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sub start_document { |
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my $self = shift; |
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# copy logic from XML::SAX::Base for getting "something" out of Source key. |
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# parse stylesheet |
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# store |
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# return |
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my $parser = XML::LibXML->new; |
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my $styledoc; |
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if (defined $self->{Source}{CharacterStream}) { |
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die "CharacterStream is not supported"; |
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} |
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elsif (defined $self->{Source}{ByteStream}) { |
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$styledoc = $parser->parse_fh($self->{Source}{ByteStream}, $self->{Source}{SystemId} || ''); |
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} |
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elsif (defined $self->{Source}{String}) { |
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$styledoc = $parser->parse_string($self->{Source}{String}, $self->{Source}{SystemId} || ''); |
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} |
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elsif (defined $self->{Source}{SystemId}) { |
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$styledoc = $parser->parse_file($self->{Source}{SystemId}); |
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} |
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if (!$styledoc) { |
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die "Could not create stylesheet DOM"; |
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} |
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$self->{StylesheetDOM} = $styledoc; |
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$self->SUPER::start_document(@_) |
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} |
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sub end_document { |
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my $self = shift; |
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my $dom = $self->SUPER::end_document(@_); |
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# parse stylesheet |
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my $xslt = XML::LibXSLT->new; |
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my $stylesheet = $xslt->parse_stylesheet($self->{StylesheetDOM}); |
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# transform |
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my $results = $stylesheet->transform($dom); |
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# serialize to Handler and co. |
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my $parser = XML::LibXML::SAX::Parser->new(%$self); |
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$parser->generate($results); |
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} |
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sub set_handler { |
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my $self = shift; |
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$self->{Handler} = shift; |
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$self->{Parser}->set_handler( $self->{Handler} ) |
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if $self->{Parser}; |
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} |
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1; |
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__END__ |