How replace variable names in an xml-file?

Question

The java build tool ant provides filter to replace variables by their values

Example: A file with properties:

db.user.name=user
db.driver=com.informi         


        

Answer 1

This is an other implementation using bash only. If you can take the python version for you need I would suggest that. It will be easier to maintain. Otherwise you could try with this bash script:

#!/bin/bash

config="$1"
xml="$2"

tmp=$(mktemp)

cat "$config" | while read line; do

    key=`echo $line | sed -n 's/^\([^=]\+\)=\(.*\)$/\1/p'`
    value=`echo $line | sed -n 's/^\([^=]\+\)=\(.*\)$/\2/p'`

    echo " sed 's/@$key@/$value/g' | " >> $tmp
done
replacement_cmd=`cat $tmp`
eval "cat \"$xml\" | $replacement_cmd cat"

rm -f $tmp