CSV to JSON conversion using Bash

Sample Input:
========
h1,h2,h3,h4,h5,h6
1,2,3,4,5,6
11,12,13,14,15,16
21,22,23,24,25,26

Sample Output:
=========
{
{h1:1,h2:2,h3:3,h4:4,h5:5,h6:6},
{h1:11,h2:12,h3:13,h4:14,h5:15,h6:16},
{h1:21,h2:22,h3:23,h4:24,h5:25,h6:26}
}

Code:
===
Code courtesy: Thanks to EnDeR for the code
Scripting languages used: bash, awk

#!/bin/bash


###Read first line to get headings
read first_line < sampleInput.csv


#################Start reading headings into array##############################
a=0

###Read number of headings in line by getting number of field separators(which here is ,)###
headings=`echo $first_line | awk -F, {'print NF'}`

###Read number of lines by wc -l###
lines=`cat test.csv | wc -l`

while [ $a -lt $headings ]
do
#Read ($a + 1) value into x as awk prints columns in 1-n order
#Read each column element into headings array
head_array[$a]=$(echo $first_line | awk -v x=$(($a + 1)) -F"," '{print $x}')
a=$(($a+1))
done
####################End reading headings into array##############################


c=0
echo "{"
while [ $c -lt $lines ] #Loop on number of lines
do
read each_line
if [ $c -ne 0 ] #$c = 0 is the headings line.skip it
then
d=0
echo -n "{"
while [ $d -lt $headings ] #Loop on number of headings
do

#Same logic as reading each heading.Read each element to print it with its heading
each_element=$(echo $each_line | awk -v y=$(($d + 1)) -F"," '{print $y}')

if [ $d -ne $(($headings-1)) ] #print comma only if its not the last element
then
echo -n ${head_array[$d]}":"$each_element","
else
echo -n ${head_array[$d]}":"$each_element
fi
d=$(($d+1))
done
if [ $c -eq $(($lines-1)) ] #skip , for the last block
then
echo "}" 
else
echo "},"
fi
fi
c=$(($c+1))
done < test.csv
echo "}"

Hello World!

if (time < enough){
  //you are in the right place
}

/*
Hope the contents of this blog help you save some time. 
You are free to use any of the code snippets given here without any restrictions

However, if you are one who vowed to write each line of code all by yourself, 
well, you are welcome to visit some other time.
*/