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First of all, I would definitely say, use XPath expressions to do everything.   Use a libxml2-based Perl package.

Second, you might need to take a “branch and bound” type of approach:   use one set of expressions to carve the total data structure into big-chunks that you can iterate through, and then, within each subtree that you find, use other XPaths to find nodes-of-interest.   Having found one, your Perl logic may need to do some tree-walking to see if “these are the droids you’re looking for.”   But, let XPath do as much of the work for you as possible.


In reply to Re: Search and Extract from XML when path is unknown by sundialsvc4
in thread Search and Extract from XML when path is unknown by madbee

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    [Discipulus]: Corion are you would able to realize such thing? O_O
    [Corion]: In the same vein I have a script that automates Firefox to enter some data into another system. It's not faster than the people using the script if they were to do it manually, but they prefer not having to check the data and not having typos when ...
    [Corion]: ... entering the data
    [Corion]: Discipulus: I don't know whether I could really do that, but the init process itself mostly launches other processes, and the whole startup is just following a path of dependencies and making sure they are all running. Which basically is what ...
    [Discipulus]: when at work my time is (temporarly) owned by the firm, so i do not care (coworkers whatch movies.. I code Perl)
    [Corion]: ... make already does, except for files instead of programs. But maybe with some /proc hackery, that could be eliminated and one could use plain make :-D
    [choroba]: systemd just makes is asynchronous
    [choroba]: so, make -j
    [Corion]: Discipulus: Yeah - but when writing Perl to save time (instead of having fun), it helps to look whether you're actually saving time ;) Why spend 5 minutes doing manually what you can spend three years automating? ;)
    [Corion]: choroba: Oh, yeah :-D

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