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XML-TreePuller
INSTALLATION
To install this module, run the following commands:
perl Makefile.PL
make
make test
make install
ABOUT
This module implements a tree oriented XML pull processor using a combination of
XML::LibXML::Reader and an object-oriented interface around the output of XML::CompactTree.
It provides a fast and convenient way to access the content of extremely large XML documents
serially.
EXAMPLE
#!/usr/bin/env perl
use strict;
use warnings;
use XML::TreePuller;
sub gen_xml {
return <<EOF
<wiki version="0.3">
<!-- schema says that there is always 1 siteinfo and zero or more page
elements follow -->
<siteinfo>
<sitename>ExamplePedia</sitename>
<url>http://example.pedia/</url>
<namespaces>
<namespace key="-1">Special</namespace>
<namespace key="0" />
<namespace key="1">Talk</namespace>
</namespaces>
</siteinfo>
<page>
<title>A good article</title>
<text>Some good content</text>
</page>
<page>
<title>A bad article</title>
<text>Some bad content</text>
</page>
</wiki>
EOF
}
sub element_example {
my $xml = XML::TreePuller->new(string => gen_xml());
print "Printing namespace names using configuration style:\n";
$xml->config('/wiki/siteinfo/namespaces/namespace' => 'short');
while(defined(my $element = $xml->next)) {
print $element->attribute('key'), ": ", $element->text, "\n";
}
print "End of namespace names\n";
}
sub subtree_example {
my $xml = XML::TreePuller->new(string => gen_xml());
print "Printing titles using a subtree:\n";
$xml->config('/wiki/page' => 'subtree');
while(defined(my $element = $xml->next)) {
print "Title: ", $element->get_elements('title')->text, "\n";
}
print "End of titles\n";
}
sub path_example {
my $xml = XML::TreePuller->new(string => gen_xml());
print "Printing path example:\n";
$xml->config('/wiki/siteinfo', 'subtree');
$xml->config('/wiki/page/title', 'short');
while(my ($matched_path, $element) = $xml->next) {
print "Path: $matched_path\n";
}
print "End path example\n";
}
element_example(); print "\n";
subtree_example(); print "\n";
path_example(); print "\n";
__END__
Printing namespace names using configuration style:
-1: Special
0:
1: Talk
End of namespace names
Printing titles using a subtree:
Title: A good article
Title: A bad article
End of titles
Printing path example:
Path: /wiki/siteinfo
Path: /wiki/page/title
Path: /wiki/page/title
End path example
SUPPORT AND DOCUMENTATION
After installing, you can find documentation for this module with the
perldoc command.
perldoc XML::TreePuller
You can also look for information at:
RT, CPAN's request tracker
http://rt.cpan.org/NoAuth/Bugs.html?Dist=XML-TreePuller
AnnoCPAN, Annotated CPAN documentation
http://annocpan.org/dist/XML-TreePuller
CPAN Ratings
http://cpanratings.perl.org/d/XML-TreePuller
Search CPAN
http://search.cpan.org/dist/XML-TreePuller/
COPYRIGHT AND LICENCE
Copyright (C) 2010 "Tyler Riddle"
This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
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