Public SourceMage Discussion List

[Jaka Kranjc <smgl AT lynxlynx.info>]

On Thursday 10 of April 2008 05:34:57 Ismael Luceno wrote:
> > There should be a function to compare versions, something like:
> >
> > sver() {
> >     echo $(( `sed -e 's/\./ * 2048 + /g'` ))
> > }
> >
> > I guess 11bit padding is enough...
>
> Ouch, that's wrong. A friend suggested this:
>
> echo $((sed -e ':loop;s/\([^.-]*\)[.-]/(\1) * 2048 + /;tloop' ))
>
> Still, it has some problems:
> - it should not be sensible to changes like 1.9.2 to 1.9.2.1
> - it should support letters in the version
Luckily the version patterns don't change much with individual spells and 
such 
comparisons are not needed often, so approaching them individually is fine. 
Writting a truly generic comparison function would be a waste of time.

LP

-- 
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