Appending and prepending to XML files with Clojure

Question

I have an XML file with format similar to:

<root>
   <baby>
      <a>stuff</a>
      <b>stuff</b>
      <c>stuff</c>
   </baby>
       ...
   <baby>
      <a>stuff</a>
      <b>stuff</b>
      <c>stuff</c>
   </baby>
</root>

And a Clojure hash-map similar to:

{:a "More stuff" :b "Some other stuff" :c "Yet more of that stuff"}

And I'd like to prepend XML (¶) created from this hash-map after the <root> tag and before the first <baby>

(¶) The XML to prepend would be like:

   <baby>
      <a>More stuff</a>
      <b>Some other stuff</b>
      <c>Yet more of that stuff</c>
   </baby>

I'd also like to be able to delete the last one (or n...) <baby>...</baby>s from the file.

I'm struggling with coming up with an idiomatic was to prepend and append this data. I can do raw string manipulations, or parse the XML using xml/parse and xml-seq and then roll through the nodes and (somehow?) replace the data there, but that seems messy.

Any tips? Ideas? Hints? Pointers? They'd all be much appreciated.

Thank you!

Isaac, I don't have time to write a detailed reply right now but since you already know Enlive basics, see http://stackoverflow.com/questions/2872921/insertions-into-zipper-trees-on-xml-files-in-clojure/2876510#2876510 — cgrand, May 30 '10 at 07:56

score 4 · Accepted Answer · edited May 23 '17 at 12:30

4

what you want is a zipper. see Insertions into Zipper trees on XML files in Clojure for some good answers to your question

edited May 23 '17 at 12:30

Community

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answered May 30 '10 at 04:13

Jeremy Wall

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Appending and prepending to XML files with Clojure

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