renumber: named local variables for readability

diff --git a/modules/renumber/renumber.lua b/modules/renumber/renumber.lua
index caa47779c260ba1d39130fe5391586e950c92e6a..406df141d8148dfc013571c1bc31567d244a31e2 100644 (file)
--- a/modules/renumber/renumber.lua
+++ b/modules/renumber/renumber.lua
@@ -62,21 +62,27 @@ local addr_buf = ffi.new('char[16]')
 local function renumber_record(tbl, rr)
        for i = 1, #tbl do
                local prefix = tbl[i]
+               local subnet = prefix[1]
+               local bitlen = prefix[2]
+               local target = prefix[3]
+               local addrtype = prefix[4]
+               local is_exact = prefix[5]
+
                -- Match record type to address family and record address to given subnet
                -- If provided, compare record owner to prefix name
-               if match_subnet(prefix[1], prefix[2], prefix[4], rr) then
+               if match_subnet(subnet, bitlen, addrtype, rr) then
                        -- Replace part or whole address
                        local to_copy
-                       if prefix[2] and not prefix[5] then
-                               to_copy = prefix[2]
+                       if bitlen and not is_exact then
+                               to_copy = bitlen
                        else
-                               to_copy = #prefix[3] * 8
+                               to_copy = #target * 8
                        end
                        local chunks = to_copy / 8
                        local rdlen = #rr.rdata
                        if rdlen < chunks then return rr end -- Address length mismatch
                        ffi.copy(addr_buf, rr.rdata, rdlen)
-                       ffi.copy(addr_buf, prefix[3], chunks) -- Rewrite prefix
+                       ffi.copy(addr_buf, target, chunks) -- Rewrite prefix
                        rr.rdata = ffi.string(addr_buf, rdlen)
                        return rr
                end