Bash ping output in csv format - bash

Question

My aim is to transform the output (the last 2 lines) of the ping command in a CSV style.
Here are some examples:
In case there is a packet loss lower than 100% <
URL, PacketLoss, Min, Average, Max, Deviation
In case there is packet loss equal to 100%
URL, 100, -1, -1, -1, -1
My script is below, but when the packet loss is 100% the output is:
URL, 100,
So the problem is at the if statement, as it does not enter in elif, I use the same syntax as checking if the address is full or not (with "www." or not).
Can you please have a look because I tried multiple things and it did not work.
My script:
#!/bin/bash
declare site=''
declare result='';
if [[ "$1" == "www."* ]]; then
site="$1";
else
site="www.$1";
fi
result="$site";
pingOutput=$(ping $site -c10 -i0.2 -q| tail -n2);
fl=true;
while IFS= read -r line
do
# !!! The problem is here, the if statement is not working properly and I do not know why !!!
if [ "$fl" == "true" ]; then
result="$result $(echo "$line" | cut -d',' -f3 | cut -d" " -f2 | sed -r 's/%//g')";
fl=false;
elif [[ "$line" == "ms"* ]]; then
result="$result $(echo "$line" | cut -d' ' -f4 | sed -r 's/\// /g')";
else
result="$result -1 -1 -1 -1";
fi
done <<< "$pingOutput"
echo "$result";

Answer 1

This is a pretty old question but I've just stumbled upon it today. Below I paste a slight modified version of the above script that fixes the if issue and works on Mac OS.
P.S. You can uncomment the # prctg=100.0% line to see the if working.
#!/bin/bash
declare site=''
declare result=''
declare prctg=''
[[ "$1" == "www."* ]] && site="$1" || site="www.$1"
result="$site"
pingOutput=$(ping $site -c10 -i0.2 -q | tail -n2)
fl=true
while IFS= read -r line
do
#echo $line
if [ "$fl" == "true" ]
then
prctg=$(echo "$line" | grep -Eo "[.[:digit:]]{1,10}%")
result="$result,$prctg"
fl=false
# prctg=100.0%
else
if [ "$prctg" == "100.0%" ]
then
result="$result,-1,-1,-1,-1"
else
result="$result,$(echo "$line" | cut -d' ' -f4 | sed -E 's/\//,/g')"
fi
fi
done <<< "$pingOutput"
echo "$result"
I hope it helps someone from the future! :)

Answer 2

Since the second line of the pingOutput was never processed (the loop ended before) the action of adding the -1 to the output was never performed.
Due to this problem I decided to capture the percentage of failure and act when no packets were returned (100%), I also simplified some expressions you used initially.
I investigated the script and came up with the following solution:
#!/bin/bash
declare site=''
declare result=''
declare prctg=''
[[ "$1" == "www."* ]] && site="$1" || site="www.$1"
result="$site"
pingOutput=$(ping $site -c10 -i0.2 -q| tail -n2)
fl=true
while IFS= read -r line
do
# !!! The problem is here, the if statement is not working properly and I do not know why !!!
echo $line
if [ "$fl" == "true" ]
then
prctg=$(echo "$line" | grep -Po "[0-9]{0,3}(?=%)")
result="$result $prctg"
fl=false
fi
if [ "$prctg" == "100" ]
then
result="$result -1 -1 -1 -1"
else
result="$result $(echo "$line" | cut -d' ' -f4 | sed -r 's/\// /g')"
fi
done <<< "$pingOutput"
echo "$result"