#!/bin/sh

ASN="64828"

# welcome to the quoting hell
echo "digraph dn42_v4 {" &&
echo "    concentrate = true;" &&
echo "show route primary all where source = RTS_BGP" | birdc -r | awk "
        \$1 == \"BGP.as_path:\" {
                printf(\"    $ASN\");
                for (i = 2; i <= NF; i++ ) {
                        if (j != \$i) {
                                printf(\" -> %s\", \$i);
                                j = \$i
                        }
                }
                if (j != \$NF) {
                        printf(\" -> %s;\n\", \$NF)
                } else {
                        printf(\";\n\")
                }
       }" | sort -u &&
echo "}"