trying completion of varying data

trying completion of varying data

[Andy Spiegl]

Hi,

I am trying to write a completion rule for xvncviewer that only completes
the hosts that are actually turned on in my subnet.  So everytime before
showing me the possible completions it has to check for running hosts.
This second part isn't so hard, e.g. like this:

foreach ip (`nmblookup "*" | cut -f1 -d" " | grep "^[0-9.]*$"`) 
host $ip | grep Name: | cut -d" " -f2
end
 (sorry, I'm sure you guys would do that better and faster)

But then how do I get zsh to complete only these hostnames???
Looking at these working examples:
 zstyle ':completion:*:*:mpg123:*' file-patterns \
  '*.(mp3|MP3):mp3\ files *(-/):directories'

 zstyle ':completion:*:processes' command 'ps -au$USER'

I tried
 zstyle ':completion:*:*:xvncviewer:*' command 'show.active.pcs'
      (where show.active.pcs does the above)
but it doesn't even try to call the show.active.pcs script.

Please give me a hint what I'm doing wrong or any other suggestions.
Thanks!
 Andy.

-- 
           http://peru.spiegl.de  Our project
      http://radiomaranon.org.pe  Radio Marañón, Jaén, Perú
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  ----- _`\<,_    _`\<,_    _>(_) (_)/<_    \_| \   _|/' \/       /\\
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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 "We're going to turn this team around 360 degrees."
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Re: trying completion of varying data

[Clint Adams]

> I tried
>  zstyle ':completion:*:*:xvncviewer:*' command 'show.active.pcs'
>       (where show.active.pcs does the above)
> but it doesn't even try to call the show.active.pcs script.

I think you want something more along the lines of

zstyle ':completion:*:xvncviewer:*:hosts' hosts $(show.active.pcs)

or

zstyle -e ':completion:*:xvncviewer:*:hosts' hosts 'reply=( $(show.active.pcs) )'

Re: trying completion of varying data

[Bart Schaefer]

To add to what Clint suggested ...

On May 31, 10:50pm, Andy Spiegl wrote:
}
} Looking at these working examples:
}  zstyle ':completion:*:*:mpg123:*' file-patterns \
}   '*.(mp3|MP3):mp3\ files *(-/):directories'
} 
}  zstyle ':completion:*:processes' command 'ps -au$USER'
} 
} I tried
}  zstyle ':completion:*:*:xvncviewer:*' command 'show.active.pcs'
}       (where show.active.pcs does the above)

Don't just look at the examples, look at the doc.  Not all contexts use
all styles.  In particular, the "command" style is only used to override
the default match-generating command for completions that already use
such a command; it won't magically cause an arbitrary completion to start
using a command to generate the matches.

-- 
Bart Schaefer                                 Brass Lantern Enterprises
http://www.well.com/user/barts              http://www.brasslantern.com

Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net   

Re: trying completion of varying data

[Andy Spiegl]

Hi again,

> zstyle ':completion:*:xvncviewer:*:hosts' hosts $(show.active.pcs)

This is already great, but I just noticed that there's one tiny problem
left with it:  zsh seems to cache the output of show.active.pcs, but of
course I want it to adapt itself to the current situation thus showing only
the pcs that are turned on at the moment.

I tried to turn off all completion caching options I could find in the
manual, but still the same result.  Could you help me again, please?

Thanks so much,
 Andy.

-- 
           http://peru.spiegl.de  Our project
      http://radiomaranon.org.pe  Radio Marañón, Jaén, Perú
                              o      _     _         _
  ------- __o       __o      /\_   _ \\o  (_)\__/o  (_)          -o)
  ----- _`\<,_    _`\<,_    _>(_) (_)/<_    \_| \   _|/' \/       /\\
  ---- (_)/ (_)  (_)/ (_)  (_)        (_)   (_)    (_)'  _\o_    _\_v
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 A short saying often contains much wisdom.  -- Sophocles

Re: trying completion of varying data

[Bart Schaefer]

On Sat, 1 Jun 2002, Andy Spiegl wrote:

> > zstyle ':completion:*:xvncviewer:*:hosts' hosts $(show.active.pcs)
>
> This is already great, but I just noticed that there's one tiny problem

Clint already gave you the answer:

zstyle -e ':completion:*:xvncviewer:*:hosts' hosts \
	'reply=( $(show.active.pcs) )'

> I tried to turn off all completion caching options I could find

This doesn't have anything to do with caching.  It has to do with whether
or not the expression $(show.active.pcs) is inside single quotes.