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Re: C routine that compares debian package versions



> I'm currently writing a small program in C that is supposed to
> show me which packages I have from woody and which ones from
> sid (my system is actually a mix of both of them).
> Now, a problem I am likely to encounter soon are the version
> numbers. Do the follow some kind of scheme?
> 
> For instance, package ssh
> ssh 1:1.2.3-9.3
> 
> If I had the version string saved somewhere, and an other
> one like 1:1.2.3-9.4, how can I compare them, is there a
> function that can do this?

you can use system() to call dpkg with the --compare-versions option.
in alternative, you can dig in the dpkg source to find the function you
need!

pietro.



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