issue #63: Add CLI version flag

README.md

@@ -30,6 +30,7 @@ treels [Flags] [Path]
 - `-t, --tree`: Tree view of the directory
 - `--no-icons`: Disable icons
 - `-r, --readable`: Show human-readable size for each file and directory
+- `-v, --version`: Show treels version
 
 ## 📋 Example
 

cmd/flag.go

@@ -12,4 +12,5 @@ func FlagDefinition(cmd *cobra.Command, flags *module.Flags) {
 	cmd.PersistentFlags().BoolVarP(&flags.ShowTreeView, "tree", "t", false, "Tree view of the directory")
 	cmd.PersistentFlags().BoolVar(&flags.HideIcon, "no-icons", false, "Disable icons")
 	cmd.PersistentFlags().BoolVarP(&flags.ShowReadableSize, "readable", "r", false, "Show human-readable size for each file and directory")
+	cmd.PersistentFlags().BoolVarP(&flags.ShowVersion, "version", "v", false, "Show treels version")
 }

cmd/root.go

@@ -10,6 +10,8 @@ import (
 	"github.com/spf13/cobra"
 )
 
+const version = "v1.3.0"
+
 // Execute func - runs the root command.
 func Execute() {
 	if err := newRootCmd().Execute(); err != nil {
@@ -25,7 +27,12 @@ func newRootCmd() *cobra.Command {
 		Use:   "treels [path]",
 		Short: "⚡ Treels is a CLI tool crafted in Go, merging tree and ls commands with intuitive merging and beautification features.",
 		Args:  cobra.MaximumNArgs(1),
-		RunE: func(_ *cobra.Command, args []string) error {
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if flag.ShowVersion {
+				_, err := fmt.Fprintf(cmd.OutOrStdout(), "treels %s\n", version)
+				return err
+			}
+
 			options := module.Options{Flags: flag}
 			if len(args) == 1 {
 				options.Directory = args[0]

cmd/root_test.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"bytes"
 	"io"
 	"os"
 	"path/filepath"
@@ -58,6 +59,33 @@ func TestRootCmd_IconFlagsRemoved(t *testing.T) {
 	}
 }
 
+func TestRootCmd_VersionFlag(t *testing.T) {
+	tests := []struct {
+		name string
+		args []string
+	}{
+		{name: "long flag", args: []string{"--version"}},
+		{name: "short flag", args: []string{"-v"}},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var output bytes.Buffer
+			cmd := newRootCmd()
+			cmd.SetOut(&output)
+			cmd.SetArgs(tt.args)
+
+			if err := cmd.Execute(); err != nil {
+				t.Fatalf("Execute() error = %v, want nil", err)
+			}
+
+			if got := output.String(); got != "treels v1.3.0\n" {
+				t.Fatalf("Execute() output = %q, want version output", got)
+			}
+		})
+	}
+}
+
 func TestRootCmd_ValidPathWithFlags(t *testing.T) {
 	dir := t.TempDir()
 	if err := os.WriteFile(filepath.Join(dir, "main.go"), []byte("package main"), 0o644); err != nil {

module/types.go

@@ -7,6 +7,7 @@ type Flags struct {
 	ShowTreeView     bool
 	HideIcon         bool
 	ShowReadableSize bool
+	ShowVersion      bool
 }
 
 // Options struct - Contains configuration options for directory listing.