v0.2.5

ADDED:
* num-addrs subcommand, to get the number of hosts/addresses in a given
  prefix length
* get-net subcommand, to more easily get a single subnet from either the
  beginning or the end of a prefix. (MUCH FASTER than CIDR-splitting!)

cmd/subnetter/main.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	`math/big`
 	"net"
 	"net/netip"
 	"os"
@@ -34,6 +35,7 @@ func main() {
 	var buf *bytes.Buffer
 	var res *netsplit.StructuredResults
 	var numNets uint
+	var numAddrs *big.Int
 	var v6Only bool
 	var noStrict bool
 	var strictErr error
@@ -84,6 +86,18 @@ func main() {
 			log.Panicln(err)
 		}
 		return
+	case "num-addrs":
+		if err = validate.Struct(args.NumAddrs); err != nil {
+			log.Panicln(err)
+		}
+		if args.NumAddrs.Size.PrefixSize > 32 {
+			args.NumAddrs.Isv6 = true
+		}
+		if numAddrs, err = netsplit.NumAddrsIn(args.NumAddrs.Size.PrefixSize, args.NumAddrs.Isv6, args.NumAddrs.InclNetAddr, args.NumAddrs.InclBcastAddr); err != nil {
+			log.Panicln(err)
+		}
+		fmt.Println(numAddrs.String())
+		return
 	case "num-nets":
 		if err = validate.Struct(args.NumNets); err != nil {
 			log.Panicln(err)
@@ -195,6 +209,18 @@ func main() {
 			These are all handily-dandily enclosed in a `common` struct type.
 		*/
 		switch parser.Active.Name {
+		case "get-net": // Not a *true* splitter, per se; splitting is required but only for functional reasons.
+			if err = validate.Struct(args.GetPfx); err != nil {
+				log.Panicln(err)
+			}
+			cmnArgs = args.GetPfx.common
+			splitter = &netsplit.PrefixGetter{
+				Pos:          args.GetPfx.Position,
+				PrefixLength: args.GetPfx.Prefix,
+				BaseSplitter: new(netsplit.BaseSplitter),
+			}
+			noStrict = false
+			strictErr = netsplit.ErrBadNumHosts // dummy
 		case "split-hosts":
 			if err = validate.Struct(args.SplitHost); err != nil {
 				log.Panicln(err)