Creating a bash array, separated by new lines - bash

Question

I am reading in from a .txt file which looks something like this:
:DRIVES
name,server,share_1
other_name,other_server,share_2
new_name,new_server,share 3
:NAME
which is information to mount drives. I want to load them into a bash array to cycle through and mount them, however my current code breaks at the third line because the array is being created by any white space. Instead of reading
new_name,new_server,share 3
as one line, it reads it as 2 lines
new_name,new_server,share
3
I have tried changing the value of IFS to
IFS=$'\n' #and
IFS='
'
however neither work. How can I create an array from the above file separated by newlines. My code is below.
file_formatted=$(cat ~/location/to/file/test.txt)
IFS='
' # also tried $'\n'
drives=($(sed 's/^.*:DRIVES //; s/:.*$//' <<< $file_formatted))
for line in "${drives[#]}"
do
#seperates lines into indiviudal parts
drive="$(echo $line | cut -d, -f2)"
server="$(echo $line | cut -d, -f3)"
share="$(echo $line | cut -d, -f4 | tr '\' '/' | tr '[:upper:]' '[:lower:]')"
#mount //$server/$share using osascript
#script breaks because it tries to mount /server/share instead of /server/share 3
EDIT:
tried this and got the same output as before:
drives=$(sed 's/^.*:DRIVES //; s/:.*$//' <<< $file_formatted)
while IFS= read -r line; do
printf '%s\n' "$line"
done <<< "$drives"

Answer 1

This is the correct way to iterate over your file; no arrays needed.
{
# Skip over lines until we read :DRIVES
while IFS= read -r line; do
[[ $line = :DRIVES ]] && break
done
# Split each comma-separated line into the desired variables,
# until we read :NAMES, wt which point we break out of this loop
while IFS=, read -r drive server share; do
[[ $drive == :NAMES ]] && break
# Use $drive, $server, and $share
done
# No need to read the rest of the file, if any
} < ~/location/to/file/test.txt