Injecting an XML fragment into the current document from an external file
- by makenai
I'm currently parsing an XML file using REXML and trying to come up with a way of inserting an XML fragment from an internal file.
Currently, I'm using some logic like the following:
doc.elements.each('//include') do |element|
handleInclude( element )
end
def handleInclude( element )
if filename = element.attributes['file']
data = File.open( filename ).read
doc = REXML::Document.new( data )
element.parent.replace_child( element, doc )
end
end
Where my XML looks like the following:
<include file="test.xml" />
But this seems a little bit clunky, and I'm worried that REXML might not always parse XML fragments correctly due to absence of a proper root node in some cases. Is there a better way of doing this?
Concern #2: REXML seems not to pick up my changes after I replace elements. For example, after making a change:
doc.elements.each('rootNode/*') do |element|
end
..picks up neither the original element I replaced, nor the one I replaced it with. Is there some trick to getting REXML to rescan its' tree?
