My situation is as follows: My user selects a subset of the
original XML file. After this action I need to compare the
selection of the user to the original. Once I find the
location of the selection inside the original I have to
surround this selection with a new tag, say "<selected>", and
"</selected>". I have placed an example of text online at
http://www.jborsje.nl/example.txt, so you can see what I mean.
One way I can think of is iterating over all of the elements
of the original, each time calling the "deep-equal()"
function, but I do not know if that is the best approach.
It seems you only have access to the content of the data that the user
selected, and no information about where it was selected from. The best
design of course would be one in which you don't lose that information in
the first place.
Calling deep-equal on every element would do the trick. It could potentially
be quite expensive, but with luck deep-equal doesn't take very long when the
arguments are obviously not equal, for example when they are elements with
different names.
Michael Kay
http://www.saxonica.com/
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