From: Robert Klemme <bob.news@...>
Date: 2004-08-17T03:31:00+09:00
Subject: Re: Rubish Way of extracting elements


"Florian Gross" <flgr@ccan.de> schrieb im Newsbeitrag
news:2oc3f4F88pl1U1@uni-berlin.de...
> Daniel V�lkerts wrote:
>
> > <165> Aug 16 17:01:35 localhost Just a test
> > I was trying to reach this form
> >
> > var = content
> >
> > pri = 165
> > timestamp = Aug 16 17:01:35
> > device = localhost
> > msg = Just a test
>
> This ought to work, but there might be other ways to do this:
>
> if md = /^<(\d+)> (\S+ \d+ \d+:\d+:\d+) (\S+) (.*?)$/.match(text)
>    pri, timestamp, device, msg = *md.captures
>    # Do something with the captures
> end

Some more admittedly ugly constructions:

val = "<165> Aug 16 17:01:35 localhost Just a test"
unless ( ( pri, timestamp, device, msg = * /^<(\d+)> \s+ (\S+ \s+ \d+ \s+
\d+:\d+:\d+) \s+ (\S+) \s+ (.*)$/x.match(val).to_a ).empty? )
  puts "matched"
end

pri, timestamp, device, msg = * /^<(\d+)> \s+ (\S+ \s+ \d+ \s+ \d+:\d+:\d+)
\s+ (\S+) \s+ (.*)$/x.match(val).to_a
if pri
  puts "matched"
end

LOG_RX = /^<(\d+)> \s+ (\S+ \s+ \d+ \s+ \d+:\d+:\d+) \s+ (\S+) \s+ (.*)$/x

unless ( ( pri, timestamp, device, msg = * LOG_RX.match(val).to_a ).empty? )
  puts "matched"
end

if ( line, pri, timestamp, device, msg = * /^<(\d+)> \s+ (\S+ \s+ \d+ \s+
\d+:\d+:\d+) \s+ (\S+) \s+ (.*)$/x.match(val) ) && line
  puts "matched"
end

if ( line, pri, timestamp, device, msg = * LOG_RX.match(val) ) && line
  puts "matched"
end

:-)

    robert