add leet encoding

cmd/leet.go

@@ -1,20 +1,28 @@
 package cmd
 
 import (
+	"fmt"
+
 	"github.com/ipsax/kypher/internal"
 	"github.com/spf13/cobra"
 )
 
+var encodeArg string
+
 func init() {
+	leetCmd.PersistentFlags().StringVarP(&encodeArg, "encode", "e", "", "Leet message value to be encoded")
 	rootCmd.AddCommand(leetCmd)
 }
 
 var leetCmd = &cobra.Command{
-	Use:   "leet",
-	Short: "use the 1337 cipher",
+	Use:   "leet [OPTIONS]",
+	Short: "use the leet cipher",
 	Long:  `This is kypher's leet cipher`,
+	Args:  cobra.MinimumNArgs(0),
 	Run: func(cmd *cobra.Command, args []string) {
 		leet := internal.Leet{}
-		leet.Encode("todo, take cli args for encode or decode, maybe add autodetect for autodecode eventually?")
+		if encodeArg != "" {
+			fmt.Println(leet.Encode(encodeArg))
+		}
 	},
 }

internal/leet.go

@@ -1,13 +1,13 @@
 package internal
 
 import (
-	"fmt"
+	"math/rand"
 )
 
 type Leet struct{}
 
 // todo make type for leetchars = https://en.wikipedia.org/wiki/Leet#Orthography
-func leetIterator() {
+func leetMap() map[string][]string {
 	var a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z []string
 	a = append(a, "a", "4", "/", `\`, `@`, "/-", "^", "(L", "Д")
 	b = append(b, "b", "I3", "8", "13", "|3", "ß", "!3", "(3", "/3", ")3", "|-]", "j3")
@@ -64,12 +64,26 @@ func leetIterator() {
 	leetChars["y"] = y
 	leetChars["z"] = z
 
-	fmt.Println(leetChars)
+	return leetChars
+}
+
+func randRange(min, max int) int {
+	return rand.Intn(max-min) + min
 }
 
 func (Leet) Encode(str string) string {
-	leetIterator()
-	return "todo return str->leet cipher"
+	encoded := ""
+	leetChars := leetMap()
+
+	for _, c := range str {
+		// todo ignore chars that arent a-z
+		chars, exists := leetChars[string(c)]
+		if exists {
+			selectedLeet := chars[randRange(0, len(chars))]
+			encoded += selectedLeet
+		}
+	}
+	return encoded
 }
 
 func (Leet) Decode(str string) string {