shell script to add to the - awk

Question

i need to append to an xml file by reading from an csv file
i/p file pattern
test.dat
account,bill,bill seg
12345,12445,121
14456,14467,903
14456,14467,903
i need to add each line to the xml file sample xml file
<?xml version="1.0" encoding="UTF-8"?>
<BusinessConfiguration
xmlns="http://www.portal.com/schemas/BusinessConfig"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.portal.com/schemas/BusinessConfig BusinessConfiguration.xsd">
<!-- Sample input file for pin_bill_accts containing parameters for bill run management -->
<!-- Modify according to guidelines -->
<BillRunConfiguration>
<!-- List of DOMs for this bill run -->
<DOMList>
<DOM>---1</DOM>
</DOMList>
<BillSegmentList>
</BillSegmentList>
<!-- List of billing segments for this bill run -->
<BillingList>
</BillingList>
i need to add the first 2 record in the csv under the tag like
<BillingList>
<Account>12345</Account>
<Billinfo>12445</Billinfo>
</BillingList>
<BillingList>
<Account>14456</Account>
<Billinfo>14467</Billinfo>
</BillingList>
I have the following code currently:
#!/bin/awk -f
NR==FNR{ a[NR]=$0; next; }
/<BillingList>/{
print;
gsub("'","",a[++i]);
n=split(a[i],arr,",");
if( n!= 3) { next }
print "\t<Account>",arr[1],"</Account>";
print "\t<Billinfo>",arr[2],"</Billinfo>";
next;
}1
but it only replaces the first record and then stops.
I am completely new to unix so please help me in resolving this.

Answer 1

this will give you the segment
$ awk -F, # use comma as field separator
'NR>1&&NF{ # skip first line and blank lines
print # print the following
"<BillingList>
<Account>"$1"</Account> # insert first field
<BillInfo>"$2"</BillInfo> # insert second field
</BillingList>"
}' data.txt
you can add newlines at the right spots if you want.