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# $Id: Base.pm,v 1.4 2004/12/28 21:49:53 asc Exp $ |
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use strict; |
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package XML::Generator::vCard::Base; |
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use base qw (XML::SAX::Base); |
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$XML::Generator::vCard::Base::VERSION = '1.0'; |
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=head1 NAME |
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XML::Generator::vCard::Base - base class for generating SAX2 events for vCard data |
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=head1 SYNOPSIS |
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# Ceci n'est pas une boite noire. |
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package XML::Generator::vCard::FooBar; |
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use base qw (XML::Generator::vCard::Base); |
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=head1 DESCRIPTION |
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Base class for generating SAX2 events for vCard data |
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=cut |
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use File::Spec; |
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use URI::Escape; |
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use URI::Split; |
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use Encode; |
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use Memoize; |
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use constant NS => {"vCard" => "http://www.w3.org/2001/vcard-rdf/3.0#", |
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"rdf" => "http://www.w3.org/1999/02/22-rdf-syntax-ns#", |
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"rdfs" => "http://www.w3.org/2000/01/rdf-schema#", |
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"geo" => "http://www.w3.org/2003/01/geo/wgs84_pos#", |
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"foaf" => "http://xmlns.com/foaf/0.1/"}; |
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sub import { |
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my $pkg = shift; |
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&memoize("_prepare_qname","prepare_uri","_prepare_path"); |
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return 1; |
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} |
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=head1 PACKAGE METHODS |
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=cut |
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=head2 __PACKAGE__->prepare_uri($uri) |
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Encodes (decoding first, where necessary) a URI's path as UTF-8. |
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Returns a string. |
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=cut |
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# this is actually only used by ::RDF at the moment |
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# but it seems like a good candidate for inclusion |
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# here |
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sub prepare_uri { |
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my $pkg = shift; |
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return &_prepare_uri(@_); |
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} |
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# memoized |
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sub _prepare_uri { |
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my $uri = shift; |
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my ($scheme, $auth, $path, $query, $frag) = URI::Split::uri_split($uri); |
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$path = File::Spec->catdir(map { &_prepare_path($_) } split("/",$path)); |
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return URI::Split::uri_join($scheme, $auth, $path, $query, $frag); |
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} |
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# memoized |
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sub _prepare_path { |
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my $str = shift; |
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$str =~ s/(?:%([a-fA-F0-9]{2})%([a-fA-F0-9]{2}))/pack("U0U*",hex($1),hex($2))/eg; |
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$str = decode_utf8($str); |
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return URI::Escape::uri_escape_utf8($str); |
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} |
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=head2 __PACKAGE__->prepare_qname($qname) |
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Utility method to return a hash reference suitable for passing |
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a XML QName to I. |
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Returns a hash reference. |
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=cut |
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sub prepare_qname { |
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my $pkg = shift; |
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return &_prepare_qname(@_); |
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} |
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# memoized |
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sub _prepare_qname { |
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my $qname = shift; |
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$qname =~ /^([^:]+):(.*)$/; |
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my $prefix = $1; |
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my $name = $2; |
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my $ns = NS->{ $prefix }; |
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return {Name => $qname, |
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LocalName => $name, |
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Prefix => $prefix, |
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NamespaceURI => $ns}; |
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} |
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=head2 __PACKAGE__->prepare_attrs(\%attrs) |
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Utility method to return a hash reference suitable for passing |
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XML attributes to I. |
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Returns a hash reference. |
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=cut |
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sub prepare_attrs { |
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my $pkg = shift; |
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my $attrs = shift; |
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foreach my $uri (keys %$attrs) { |
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my ($key, $data) = &_prepare_attr($attrs->{$uri}); |
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$attrs->{ $key } = $data; |
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delete $attrs->{$uri}; |
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} |
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return {Attributes => $attrs}; |
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} |
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sub _prepare_attr { |
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my $attr = shift; |
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my $data = &_prepare_qname($attr->{Name}); |
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$data->{Value} = $attr->{Value}; |
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my $fq_uri = sprintf("{%s}%s", |
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$data->{NamespaceURI}, |
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$data->{LocalName}); |
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return ($fq_uri,$data); |
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} |
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=head2 __PACKAGE__->namespaces() |
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Returns a hash reference of commonly used prefixes |
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and namespace URIs. |
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161
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=cut |
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sub namespaces { |
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return NS; |
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} |
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167
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# deprecated |
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sub _namespaces { |
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return $_[0]->namespaces(); |
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} |
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173
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=head1 VERSION |
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175
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1.0 |
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177
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=head1 DATE |
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179
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$Date: 2004/12/28 21:49:53 $ |
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181
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=head1 AUTHOR |
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183
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Aaron Straup Cope Eascope@cpan.orgE |
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185
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=head1 SEE ALSO |
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187
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L |
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189
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=head1 LICENSE |
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191
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Copyright (c) Aaron Straup Cope. All rights reserved. |
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193
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This is free software, you may use it and distribute it |
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under the same terms as Perl itself. |
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196
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=cut |
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198
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return 1; |