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### |
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# XML::RDDL::Driver - SAX2 Driver for RDDL Directories |
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# Robin Berjon |
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# 17/10/2001 - v.0.01 |
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### |
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package XML::RDDL::Driver; |
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use strict; |
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use XML::RDDL qw(); |
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use base qw(XML::SAX::Base); |
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use vars qw($VERSION $NS_RDDL $NS_XML $NS_XLINK); |
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$VERSION = $XML::RDDL::VERSION; |
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$NS_RDDL = $XML::RDDL::NS_RDDL; |
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$NS_XML = $XML::RDDL::NS_XML; |
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$NS_XLINK = $XML::RDDL::NS_XLINK; |
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#-------------------------------------------------------------------# |
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# parse |
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#-------------------------------------------------------------------# |
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sub parse { |
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my $self = shift; |
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my $dir = shift; |
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my $doc = $self->_create_node; |
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my $pm_rddl = $self->_create_node( |
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Prefix => 'rddl', |
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NamespaceURI => $NS_RDDL, |
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); |
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my $pm_xlnk = $self->_create_node( |
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Prefix => 'xlink', |
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NamespaceURI => $NS_XLINK, |
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); |
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$self->SUPER::start_document($doc); |
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$self->SUPER::start_prefix_mapping($pm_rddl); |
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$self->SUPER::start_prefix_mapping($pm_xlnk); |
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for my $res ($dir->get_resources) { |
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my %attr; |
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$attr{"{}id"} = $self->_create_node( |
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Name => 'id', |
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LocalName => 'id', |
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Prefix => '', |
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Value => $res->get_id, |
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NamespaceURI => '', |
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); |
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$attr{"{$NS_XML}base"} = $self->_create_node( |
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Name => 'xml:base', |
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LocalName => 'base', |
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Prefix => 'xml', |
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Value => $res->get_base_uri, |
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NamespaceURI => $NS_XML, |
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); |
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$attr{"{$NS_XML}lang"} = $self->_create_node( |
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Name => 'xml:lang', |
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LocalName => 'lang', |
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Prefix => 'xml', |
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Value => $res->get_lang, |
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NamespaceURI => $NS_XML, |
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); |
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$attr{"{$NS_XLINK}href"} = $self->_create_node( |
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Name => 'xlink:href', |
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LocalName => 'href', |
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Prefix => 'xlink', |
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Value => $res->get_href, |
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NamespaceURI => $NS_XLINK, |
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); |
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1
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$attr{"{$NS_XLINK}role"} = $self->_create_node( |
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Name => 'xlink:role', |
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LocalName => 'role', |
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Prefix => 'xlink', |
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Value => $res->get_nature, |
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NamespaceURI => $NS_XLINK, |
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); |
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$attr{"{$NS_XLINK}arcrole"} = $self->_create_node( |
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Name => 'xlink:arcrole', |
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LocalName => 'arcrole', |
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Prefix => 'xlink', |
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Value => $res->get_purpose, |
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NamespaceURI => $NS_XLINK, |
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); |
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$attr{"{$NS_XLINK}title"} = $self->_create_node( |
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Name => 'xlink:title', |
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LocalName => 'title', |
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Prefix => 'xlink', |
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Value => $res->get_title, |
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NamespaceURI => $NS_XLINK, |
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); |
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my $e = $self->_create_node( |
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Name => 'rddl:resource', |
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LocalName => 'resource', |
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Prefix => 'rddl', |
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NamespaceURI => $NS_RDDL, |
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Attributes => \%attr, |
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); |
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$self->SUPER::start_element($e); |
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19009
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delete $e->{Attributes}; |
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$self->SUPER::end_element($e); |
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} |
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$self->SUPER::end_prefix_mapping($pm_xlnk); |
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$self->SUPER::end_prefix_mapping($pm_rddl); |
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$self->SUPER::end_document($doc); |
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} |
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#-------------------------------------------------------------------# |
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#,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,# |
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#`,`, Private Helpers `,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,# |
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#```````````````````````````````````````````````````````````````````# |
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#-------------------------------------------------------------------# |
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# _create_node |
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#-------------------------------------------------------------------# |
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sub _create_node { |
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shift; |
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# this may check for a factory later |
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return {@_}; |
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} |
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#-------------------------------------------------------------------# |
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1; |
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#,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,# |
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#`,`, Documentation `,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,`,# |
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#```````````````````````````````````````````````````````````````````# |
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=pod |
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=head1 NAME |
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135
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XML::RDDL::Driver - SAX2 Driver for RDDL Directories |
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=head1 SYNOPSIS |
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139
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use XML::RDDL::Directory; |
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use XML::RDDL::Driver; |
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use MySAX2Handler; |
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143
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my $dir = XML::RDDL::Directory->new; |
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# do various things to add to the directory... |
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my $handler = MySAX2Handler->new; |
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my $driver = XML::RDDL::Driver->new(Handler => $handler); |
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$driver->parse($dir); |
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150
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=head1 DESCRIPTION |
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152
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This module is a SAX2 driver that will take an RDDL Directory instance |
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and generate the appropriate events to serialize it to RDDL. |
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Note that the rest of the document won't be present, and that if you |
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don't use the start_document() event to create a container document |
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and have more than one resource, the generated document won't be |
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valid. This driver's output is meant to be embedded in something else. |
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160
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=head1 METHODS |
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162
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=over 4 |
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164
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=item XML::RDDL->new(%options) |
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166
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Creates a new XML::RDDL::Driver ready to fire off events. The options |
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are the same as those passed to all SAX2 drivers. |
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169
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=item XML::RDDL->parse($directory) |
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171
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Takes a Directory object and generates the appropriate events. |
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173
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=back |
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175
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=head1 AUTHOR |
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177
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Robin Berjon, robin@knowscape.com |
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179
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=head1 COPYRIGHT |
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181
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Copyright (c) 2001-2002 Robin Berjon. All rights reserved. This program is |
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free software; you can redistribute it and/or modify it under the same |
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terms as Perl itself. |
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185
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=head1 SEE ALSO |
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187
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http://www.rddl.org/, XML::RDDL |
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189
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=cut |
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