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Full Discussion: xml-parser with perl
Top Forums Shell Programming and Scripting xml-parser with perl Post 302230304 by trek on Friday 29th of August 2008 03:28:24 AM
Old 08-29-2008
xml-parser with perl

Hello

I want to write an xml- parser with perl an i use the libary XML::LibXML.

I have a problem with the command getElementsByTagName.
If there is an empty tag, the getElementsByTagName method returns a NodeList of length zero.

how can i check if this is a nodelist of lenght zero??

i wanted to use a if loop if($var eq "")
but then i get the error:
Operation "eq": no method found,
left argument in overloaded package XML::LibXML::NodeList,
right argument has no overloaded magic at ./conv line 284.


does anyone knows a solution to my problem?

thx
 

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XML(3pm)						User Contributed Perl Documentation						  XML(3pm)

NAME
CGI::XML - Perl extension for converting CGI.pm variables to/from XML SYNOPSIS
use CGI::XML; $q = new CGI::XML; # convert CGI.pm variables to XML $xml = $q->toXML; $xml = $q->toXML($root); # convert XML to CGI.pm variables $q->toCGI($xml); DESCRIPTION
The CGI::XML module converts CGI.pm variables to XML and vice versa. CGI::XML is a subclass of CGI.pm, so it reads the CGI variables just as CGI.pm would. METHODS
$q = new CGI::XML creates a new instance of CGI::XML. You also have access to all of the methods in CGI.pm. $q->toXML([$root]) where $root is an optional parameter that specifies the root element. By default, toXML will not return a root element. $q->toCGI($xml) where $xml is the XML you would like to convert to CGI.pm parameters. Values in the XML will overwrite any existing values if they exist. NOTE
CGI::XML does not currently handle multiple selections passed from HTML forms. This will be added in a future release. AUTHOR
Jonathan Eisenzopf <eisen@pobox.com> CONTRIBUTORS
David Black <dblack@candle.superlink.net> SEE ALSO
perl(1), XML::Parser(3). perl v5.8.8 2004-12-05 XML(3pm)
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