How will sparkUpdater.sh know that there is a Spark update available? It doesn't look like it checks the plist file in the cloud.

Is it possible to have below similar blocks kept in common function:

CURRENT_PRODUCT_ID=$line
if [[ $CURRENT_PRODUCT_ID =~ $regex ]]
then
    CURRENT_PRODUCT_ID=${BASH_REMATCH[1]}
fi
idx=""

something like:
CURRENT_PRODUCT_ID=fn(line, pattern)
CURRENT_VERSION=fn(line, pattern)
CURRENT_CODEBASE =fn(line, pattern)

where pattern is like Codebase etc

1, We need to copy sparkUpdater.sh from macstuff to Spark.app during build. Change is needed in mkapp.sh
2, Command line arguments number need to be changed to odd numbers $3,$5,$7 and may need to check failure case like empty inputs etc.

please add checks for empty inputs to .sh file.