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freeindy

07-23-2008 08:04 AM

parsing text using sed/awk or similar???

Hi,

I have a text file (conf) like:

Code:

Section AAA

        var1 = abba

        var2 = baab

        var3 = abab

EndSection



Section BBB

        var1 = nisse

        var2 = lasse

        var3 = salle

EndSection

I want to get out sections individually into a variable (bash) but I can't get my head around sed how to do it. Then eventually get each variable correctly. Any ideas?

Thanks,
Indy

Kenhelm

07-23-2008 11:27 AM

Each section of variables could be put into an array:-

Code:

#!/bin/bash

AAA=("" $(sed -n '/Section AAA/, /EndSection/ s/.* = \(.*\)/ \1/p' filename))

echo ${AAA[1]} ${AAA[2]} ${AAA[3]}



abba baab abab

Or all the variables could be put into one array:-

Code:

#!/bin/bash

all=("" $(sed -n 's/.* = \(.*\)/ \1/p' filename))

echo ${all[1]} ${all[2]} ${all[3]}

echo ${all[4]} ${all[5]} ${all[6]}



abba baab abab

nisse lasse salle

pixellany

07-23-2008 11:46 AM

I read it as wanting each SECTION in a variable.

Section = `sed -n '/AAA/,/EndSection/p' filename`

I just realized that, unlike many regexes, the "range" construct in SED is not greedy--ie, it stops on the first instance of "EndSection"

theNbomr

07-23-2008 05:51 PM

In perl (awk, too, but there are others in this forum who do better awk than do I), this is a one-liner:

Code:

perl -e '$/="\n\n"; @sections=<>; foreach $section (@sections){ print "\nSECTION = $section\n";

--- rod.

ghostdog74

07-23-2008 08:06 PM

Code:

set -- $(awk -F"=" '/Section/{f=1;next}/EndSection/{f=0}f{print $2}' file)

echo $1

echo $2

freeindy

07-24-2008 04:04 AM

thanks lads,

Works beautifully

Indy

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