Re: Extracting Informations from strings

[Peter Stephenson <pws@csr.com>]

Stefan =?iso-8859-1?Q?Reich=F6r?= wrote:
> Hi!
> 
> I want to parse the output from acpi:
>   Battery 1: charging, 95%, charging at zero rate - will never fully charge.
> 
> I want to extract the "95%" from the output above.
> 
> How can I achieve this from within zsh?

Within zsh, you need something like (assuming the output is in $string):

setopt extendedglob
local match mbegin mend
if [[ $string = (#b)"Battery "*" charging, "(<->)"%"* ]]; then
  print "Charge is ${match[1]}%"
fi

It's up to you how closely you want to match the output, I've matched a
lot of it with *'s.

This works from zsh 4.0.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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