Recursing XML data using REXML

[Carl Bourne]

Hi,

I would like to process an XML file using REXML and recurse down through
some sub elements, e.g. the "group" and "cond" elements in the following
XML:



<rule>
<name>Test Rule</name>
<description>This is a test rule</description>
<order>2</order>
<group operator="all">
<cond name="condition1"/>
<group operator="not">
<cond name="condition2"/>
<group operator="not">
<cond name="condition3"/>
</group>
</group>
</group>
</rule>

However, I need to produce output that maintains the hierarchy so it can
be displayed as a nested list such as:-

<h1>Rule Name - Test Rule</h1>
<h1>Rule Description - Test Rule</h1>
<ul>
<li>group operator is all - condition name is condition 1
<ul>
<li>group operator is not - condition name is condition 2
<ul>
<li>group operator is not - condition name is condition 3</li>
</ul>
</li>
</ul>
</li>
</ul>

I can't seem to find any examples of doing this, would somebody be so
kind as to provide me with an example of how I could do this?

Regards,

Carl

 

[Phrogz]

I would like to process an XML file using REXML and recurse down through
some sub elements, e.g. the "group" and "cond" elements in the following
XML: [snip]
However, I need to produce output that maintains the hierarchy so it can
be displayed as a nested list such as:-

def show_element( element, level=0 )
print " "*level

# do something with the element here

# Depth-first recursion
element.children.each{ |child|
show_element( child, level+1 )
}
end

 

[Gavin Kistner]

Answer here:
http://groups.google.com/group/comp.lang.ruby/browse_frm/thread/5a948a058d3fac18

 

[Carl Bourne]

Answer here:
http://groups.google.com/group/comp.lang.ruby/browse_frm/thread/5a948a058d3fac18

Thanks for this Gavin, however the link to this seems to be broken.
Please could you confirm it.

Best Regards,

Carl

 

[Gavin Kistner]

Thanks for this Gavin, however the link to this seems to be broken.
Please could you confirm it.

It works for me. If it's not for you, you can also go to:
http://groups.google.com/group/comp.lang.ruby
and find the message titled "Recursing XML data using REXML".

 

[Carl Bourne]

Thanks for this Gavin, however the link to this seems to be broken.
Please could you confirm it.

Best Regards,

Carl

Thanks Gavin,

Seems to work OK now - will give it a try. Thanks again!

Carl