initial commit

chapter5/function_parse_variable_length_records

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+function parse_variable_length_records
+{
+# set -x
+# Zero out the $OUTFILE
+
+>$OUTFILE
+
+# Associate standard output with file descriptor 4
+# and redirect standard output to $OUTFILE
+
+exec 4<&1
+exec 1> $OUTFILE
+
+while read RECORD
+do
+   # On each loop iteration extract the data fields
+   # from the record as we process the record file
+   # line by line
+
+   echo $RECORD | awk -F : '{print $1, $2, $3, $4, $5, $6}' \
+                | while read BRANCH ACCOUNT NAME TOTAL DATEDUE RECFILE
+   do
+       # Perform some action on the data
+
+       process_variablelength_data_new_duedate $BRANCH $ACCOUNT $NAME \
+               $TOTAL $DATEDUE $RECFILE $NEW_DATEDUE
+       if (( $? != 0 ))
+       then
+           # Note that $LOGFILE is a global variable
+           echo "Record Error: $RECORD" | tee -a $LOGFILE
+       fi
+   done
+
+done < $MERGERECORDFILE
+
+# Restore standard output and close file
+# descriptor 4
+
+exec 1<&4
+exec 4>&-
+}
+