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Welcome To The Human Race - Perl

They say there's more than one way to skin a cat - and that'stwice as true when you're a Perl developer. In this concluding article onXML parsing with Perl, find out how the XML::DOM package provides analternative technique for manipulating XML elements and attributes, andcompare the two approaches to see which one works best for you.

TABLE OF CONTENTS:
  1. Using Perl With XML (part 2)
  2. Meet Joe Cool
  3. Parents And Their Children
  4. What's In A Name?
  5. Welcome To The Human Race
  6. Building A Library
  7. Anyone For Chicken?
  8. Conclusions...
  9. ...And Links
By: icarus, (c) Melonfire
Rating: starstarstarstarstar / 9
February 01, 2002

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Just as it's possible to access elements and their content, it's also possible to access element attributes and their values. The getAttributes() method of the Node object provides access to a list of all available attributes, and the getNamedItem() and getValue() methods make it possible to access specific attributes and their values. Take a look at a demonstration of how it all works:

#!/usr/bin/perl # create an XML-compliant string $xml = "<?xml version=\"1.0\"?><me species=\"human\"><name>Joe Cool</name><age>24</age><sex>male</sex></me>"; # include package use XML::DOM; # instantiate parser $xp = new XML::DOM::Parser(); # parse and create tree $doc = $xp->parse($xml); # get root node (Node object) $root = $doc->getDocumentElement(); # get attributes (NamedNodeMap object) $attribs = $root->getAttributes(); # get specific attribute (Attr object) $species = $attribs->getNamedItem("species"); # get value of attribute # returns "human" print $species->getValue(); # end
Getting to an attribute value is a little more complicated than getting to an element. But hey - no gain without pain, right?

 
 
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