Prettify LDIF output in BASH

pretty_ldif.sh

function ldif_decode {
        if [[ "$1" =~ ^([^:]*)::\ (.*)$ ]]
        then
                echo "${BASH_REMATCH[1]}: $(base64 -d <<< "${BASH_REMATCH[2]}")"
        else
                echo "$1"
        fi
}

function pretty_ldif {
        local IFS=""
        local prev_line=""
        local line

        while read -r line
        do
                if [ "${line:0:1}" = " " ]
                then
                        prev_line="${prev_line}${line:1}"
                else
                        ldif_decode "${prev_line}"
                        prev_line="${line}"
                fi
        done
        ldif_decode "${prev_line}"
}