Funky Text

#!/bin/bash

declare -i flag
declare -i temp=0

for i in $(cat text|sed 's/\(.\{1\}\)/\1 /g')
do
    if [ "$i" == "x" ]
    then
        i=0
    elif [ "$i" == "y" ]
    then
        flag=2
    else
        if [ "$flag" == "0" ]
        then
                temp=temp+i
        else
            flag=$flag-1
        fi
    fi
done
echo $temp