Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / miekg / dns / reverse.go

diff --git a/vendor/github.com/miekg/dns/reverse.go b/vendor/github.com/miekg/dns/reverse.go
new file mode 100644 (file)
index 0000000..28151af
--- /dev/null
+++ b/vendor/github.com/miekg/dns/reverse.go
@@ -0,0 +1,52 @@
+package dns
+
+// StringToType is the reverse of TypeToString, needed for string parsing.
+var StringToType = reverseInt16(TypeToString)
+
+// StringToClass is the reverse of ClassToString, needed for string parsing.
+var StringToClass = reverseInt16(ClassToString)
+
+// StringToOpcode is a map of opcodes to strings.
+var StringToOpcode = reverseInt(OpcodeToString)
+
+// StringToRcode is a map of rcodes to strings.
+var StringToRcode = reverseInt(RcodeToString)
+
+func init() {
+       // Preserve previous NOTIMP typo, see github.com/miekg/dns/issues/733.
+       StringToRcode["NOTIMPL"] = RcodeNotImplemented
+}
+
+// StringToAlgorithm is the reverse of AlgorithmToString.
+var StringToAlgorithm = reverseInt8(AlgorithmToString)
+
+// StringToHash is a map of names to hash IDs.
+var StringToHash = reverseInt8(HashToString)
+
+// StringToCertType is the reverseof CertTypeToString.
+var StringToCertType = reverseInt16(CertTypeToString)
+
+// Reverse a map
+func reverseInt8(m map[uint8]string) map[string]uint8 {
+       n := make(map[string]uint8, len(m))
+       for u, s := range m {
+               n[s] = u
+       }
+       return n
+}
+
+func reverseInt16(m map[uint16]string) map[string]uint16 {
+       n := make(map[string]uint16, len(m))
+       for u, s := range m {
+               n[s] = u
+       }
+       return n
+}
+
+func reverseInt(m map[int]string) map[string]int {
+       n := make(map[string]int, len(m))
+       for u, s := range m {
+               n[s] = u
+       }
+       return n
+}