feat: add completion and manpage commands

cmd/manpages.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+)
+
+var manpagesCmd = &cobra.Command{
+	Use:   "manpages",
+	Short: "Generate manpages",
+	Long:  "Generate manpages for fgj commands.",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		dir, _ := cmd.Flags().GetString("dir")
+		if dir == "" {
+			return fmt.Errorf("directory is required")
+		}
+
+		if err := os.MkdirAll(dir, 0755); err != nil {
+			return fmt.Errorf("failed to create %s: %w", dir, err)
+		}
+
+		absDir, err := filepath.Abs(dir)
+		if err != nil {
+			return fmt.Errorf("failed to resolve %s: %w", dir, err)
+		}
+
+		header := &doc.GenManHeader{
+			Title:   "FGJ",
+			Section: "1",
+		}
+
+		if err := doc.GenManTree(rootCmd, header, absDir); err != nil {
+			return fmt.Errorf("failed to generate manpages: %w", err)
+		}
+
+		fmt.Printf("Manpages generated in %s\n", absDir)
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(manpagesCmd)
+	manpagesCmd.Flags().String("dir", "", "Output directory for manpages")
+	_ = manpagesCmd.MarkFlagRequired("dir")
+}