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Small tweak, next cleanup the tests

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This commit is contained in:
Miek Gieben 2015-08-25 06:52:56 +01:00
parent 79547a0341
commit 3daa798e14
1 changed files with 3 additions and 3 deletions
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6
sanitize.go
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@ -1,10 +1,11 @@
package dns package dns
// Dedup removes identical RRs from rrs. It preserves the original ordering. // Dedup removes identical RRs from rrs. It preserves the original ordering.
// The lowest TTL of any duplicates is used in the remaining one.
// TODO(miek): CNAME, DNAME 'n stuff. // TODO(miek): CNAME, DNAME 'n stuff.
func Dedup(rrs []RR) []RR { func Dedup(rrs []RR) []RR {
m := make(map[string]RR) m := make(map[string]RR)
keys := []string{} keys := make([]string, 0, len(rrs))
for _, r := range rrs { for _, r := range rrs {
key := normalizedString(r) key := normalizedString(r)
@ -19,8 +20,7 @@ func Dedup(rrs []RR) []RR {
m[key] = r m[key] = r
} }
// If the length of the result map equals the amount of RRs we got, // If the length of the result map equals the amount of RRs we got,
// it means they were all different. We can then just return the original // it means they were all different. We can then just return the original rrset.
// rrset.
if len(m) == len(rrs) { if len(m) == len(rrs) {
return rrs return rrs
} }