Re: Beagle plugins in scripting languages

[Lukas Lipka <lukas pmad net>]

This is awesome! Great work. It would be a nice idea to put this on the
Wiki.

Lukas

On Fri, 2005-12-02 at 19:33 -0500, D Bera wrote:
> Hi
> Just for fun, I created a beagle filter using Boo (a python like
> scripting language generating .Net assembly). I was initially using
> IronPython but the recent versions of IronPython uses .Net framework
> 2.0 using generics; so IronPython wont build with current mono.
> 
> Note that, you need beagle installed on your machine for this to work
> (duh!). Use the correct path to beagle dlls while compiling (on my
> machine its /usr/lib/beagle)
> 
> The code is pretty small, so I am pasting below. Note, the filter does
> absolutely nothing useful - I couldnt figure out what to do! (Its a
> python like syntax, so beware of all the tabs and whitespaces if you
> are copy-pasting)
> 
> ------------------ >8 ----------------------------------
> # compile using
> # LANG=C mono booc.exe -t:library
> -r:/usr/lib/beagle/BeagleDaemonPlugins.dll
> -r:/usr/lib/beagle/Beagle.dll -out:FilterRPM.dll FilterRPM.boo
> # copy FilterRPM.dll to /usr/lib/beagle/Filters/
> # enjoy the "extracted text" from rpm files
> 
> namespace Beagle.Filters
> 
> import System
> import System.IO
> import Beagle.Daemon
> 
> class FilterRPM(Beagle.Daemon.Filter):
>         private filename as string
>         def constructor():
>                 Console.WriteLine ("Constructing...")
>                 AddSupportedFlavor (FilterFlavor.NewFromMimeType      
>                ("application/x-rpm"))
> 
>         override def DoOpen(info as FileInfo):
>                 Console.WriteLine ("DoOpen")
>                 filename = info.Name
> 
>         override def DoPull():
>                 Console.WriteLine ("DoPull")
>                 AppendText ("Nothing found")
>                 Finished ()
> 
>         override def DoPullProperties():
>                 Console.WriteLine ("DoPull")
>                 AddProperty (Beagle.Property.NewKeyword ("fixme:name",
> filename))
>                                                                    
> 24,1-8        Bot
> ------------------ >8 ----------------------------------
> 
> [1] Boo: http://boo.codehaus.org/Home
> 
> On 11/21/05, Jon Trowbridge <trow novell com> wrote:
> > On Thu, 2005-11-17 at 13:39 +0100, Leen Toelen wrote:
> > > If Beagle can handle scripted plugins it needs some more marketing.
> >
> > In theory, it should be possible to do a backend in any .NET language...
> > we've just never tried it.  I'm sure that there would be some technical
> > kinks that would have to be overcome, but it would be very cool if it
> > worked.
> >
> > If anyone has time to play around with this, please let us know how it
> > turns out.  A good way to start would be to try to write a very simple
> > backend that just returns one canned hit for every query.  Once that
> > works, the rest should be easy.
> >
> > -J
> >
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> >
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