[SOLVED] (automatic) exporting content of file

druuna · 05-24-2005, 03:11 PM

Hi all,

Thought I had an understanding of this, guess I'm wrong.......

Problem is this: I have an input file, db.conf, looking like this (shortened):

Code:

# start db config file

# tets01
dbname=tets01
dm="Some Bloke"
tak="o=left"

# dummy01
dbname=dummy01
dm="someuser"
tak="o=right"

# end db config file

I need to export dbname, dm and tak, based on the db given (tets01 or dummy01 in the above example).
The export part is giving me trouble, instead of exporting 3 variables it exports 1 (dbname), which holds all other entries.

The script (tailored for this question):

Code:

#!/bin/bash
# -------------------------------------------------------------------------- #
#set -x
DB="$1"
export dummy1=testing123 dummy2="123 testing"

for EXPORT_ME in "`awk -v DB="${DB}" \
              'BEGIN { FS="\n" ; RS="" }
               $1 ~ DB { print $2, $3, $4, $5 }
              ' db.conf`"
do
  export "$EXPORT_ME"
done

echo "----------------------------------------------------------"
echo "dummy1 : $dummy1"
echo "dummy2 : $dummy2"
echo "----------------------------------------------------------"
echo "dbname : $dbname"
echo "dm     : $dm"
echo "tak    : $tak"
echo "----------------------------------------------------------"

# -------------------------------------------------------------------------- #
# end

Example run:

Code:

$ ./db.parser tets01
----------------------------------------------------------
dummy1 : testing123
dummy2 : 123 testing
----------------------------------------------------------
dbname : tets01 dm="Some Bloke" tak="o=left" 
dm     : 
tak    : 
----------------------------------------------------------

$ ./db.parser dummy01
----------------------------------------------------------
dummy1 : testing123
dummy2 : 123 testing
----------------------------------------------------------
dbname : dummy01 dm="someuser" tak="o=right" 
dm     : 
tak    : 
----------------------------------------------------------

I think this has to do with the export "$EXPORT_ME" not expanding the content because of the double quotes. Loosing them is not an option 'cause the dm entry can have spaces (tak as well).

set -x shows this difference between the pasing of the dummy's and the parsing of EXPORT_ME:

dummy: + export dummy1=testing123 'dummy2=123 testing'
export_me: + export 'dbname=tets01 dm="Some Bloke" tak="o=left" '

Which says it all.

Anyway around this? db.conf file cannot change, all the rest is useless anyway so hack away

Thanks in advance.

Hko · 05-24-2005, 03:38 PM

If I understand correctly what you're trying to do,....

Code:

#!/bin/bash

DB="$1"
TMPFILE="/tmp/db_one_record_$$"

awk -v DB="${DB}" \
 'BEGIN { FS="\n" ; RS="" }
 $1 ~ DB { print }
 ' db.conf >$TMPFILE
source $TMPFILE
rm $TMPFILE

echo "----------------------------------------------------------"
echo "dbname : $dbname"
echo "dm     : $dm"
echo "tak    : $tak"
echo "----------------------------------------------------------"

Doet dit wat je wilt?

druuna · 05-24-2005, 03:43 PM

Yep, that works for me. Was focusing too much on solving this to think about a temporary file.....

Thanks again.

Oftewel: Mijn dank grenst aan hondsdolheid!

Sorry about the dutch folks