Hi, I hope someone can help. I read the FAQ, studied the examples and read threads with keyword namespace to no avail.
I work with libxml2-2.7.6-21.el6_8.1.x86_64 (latest on CentOS 6 repo; it will make my life quite difficult not to work from official repositories so I can live with other bugs if at least my question below is not answered by a bug fix subsequent to this version). <http://stackoverflow.com/questions/40626702/libxml2-output-namespace-declarations-in-non-root-elements#> I have a start document similar in concept to this <a:root xmlns:a="http://example.com/roots"; xmlns:b="http://example.com/subs"; xmlns:c="http://example.com/subsubs";> <b:sub> <c:subsub>Hello World</c:subsub> </b:sub></a:root> I parse it with xmlReadFile. I then traverse the DOM to the node of *sub* Using xmlNodeDump I want to output XML for *sub* and deeper only i.e. I want to end up with <b:sub xmlns:b="http://example.com/subs"; xmlns:c="http://example.com/subsubs";> <c:subsub>Hellow World<c:subsub></b:sub> However because the namespace declarations were in the *root* tag presumably, when I dump the XML, the namespace declarations are lost and I end up with <b:sub> <c:subsub>Hellow World<c:subsub></b:sub> which is not valid XML anymore when using a validating parser. The question is: How can I make sure the XML being output has the relevant namespace declarations added to the new top-level element i.e. to *sub* ? Even if it means I need to serialize in a different manner to xmlNodeDump. At the moment I hacked a solution by traversing the entire DOM and harvesting all namespace references and their URIs then I massage the generated text at the end by pasting the namespace declarations into the XML using string substitute functions but I have a suspicion this will bite me somewhere down the line. Any advise will be much appreciated.
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