ip

net/converter/ip.go

@@ -0,0 +1,64 @@
+package converter
+
+import (
+	"strconv"
+	"strings"
+)
+
+func IPToUint64(ip string) uint64 {
+	isV4 := true
+	for i := 0; i < len(ip); i++ {
+		switch ip[i] {
+		case ':':
+			isV4 = false
+			break
+		case '.':
+			isV4 = false
+			break
+		}
+	}
+	if !isV4 {
+		return ipv6ToUint64(ip)
+	}
+	return ipv4ToUint64(ip)
+}
+
+func ipv4ToUint64(s string) uint64 {
+	bits := strings.Split(s, ".")
+
+	b0, _ := strconv.Atoi(bits[0])
+	b1, _ := strconv.Atoi(bits[1])
+	b2, _ := strconv.Atoi(bits[2])
+	b3, _ := strconv.Atoi(bits[3])
+
+	var sum uint64
+
+	// left shifting 24,16,8,0 and bitwise OR
+
+	sum += uint64(b0) << 24
+	sum += uint64(b1) << 16
+	sum += uint64(b2) << 8
+	sum += uint64(b3)
+
+	return sum
+}
+
+func ipv6ToUint64(s string) uint64 {
+	bits := strings.Split(s, ":")
+
+	b0, _ := strconv.Atoi(bits[0])
+	b1, _ := strconv.Atoi(bits[1])
+	b2, _ := strconv.Atoi(bits[2])
+	b3, _ := strconv.Atoi(bits[3])
+
+	var sum uint64
+
+	// left shifting 24,16,8,0 and bitwise OR
+
+	sum += uint64(b0) << 24
+	sum += uint64(b1) << 16
+	sum += uint64(b2) << 8
+	sum += uint64(b3)
+
+	return sum
+}