Foster, Richard - PAL wrote:
Hi there,
I have a fairly large number of XML files (actually Ncover output
files) that I would like to merge into a single file. This will allow
me to produce coverage reports for a set of independently built
assemblies.
What is the best way to accomplish this in Nant (or is it even
appropriate to use Nant - should I be "exec"ing something else)?
My experience has been that NCover output files can be huge, and that
processing them with the NAnt <style> task can be very slow, depending
upon what you're trying to do. Obviously you can just concatenate them
all, stripping out the xml version and stylesheet lines, and wrap with
your own new document element. In other words, something like
cp myHeader.xml > outfile.xml
grep -v "<?" Coverage.*.xml >> outfile.xml
cp myFooter.xml >>outfile.xml
where myHeader.xml contains the <?xml, <?xml-stylesheet, and
<myTopLevelElement> and myFooter.xml would contain
</myTopLevelElement>. This is probably doable in pure NAnt using the
copy task with a filter, but it's faster and easier to use write with
bash (at least for me). It assumes that the lines with <? don't contain
anything else, so that it's safe to remove them on a line by line basis,
which is much faster than doing xml parsing.
But is that really what you want for the end result? My experience with
large NCover files is that they're a pain to download in the browser, at
least using one of the NCover style sheets off the net and Firefox. It
may make much more sense to extract the summary data you want from all
of the files, and then leave the raw data in separate files. That way
anyone who wants to drill down into a specific module won't be dragged
down by all the data from other modules.
Gary
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