generate man pages via sub command

Signed-off-by: Christian Goll <cgoll@suse.de>

internal/app/wwctl/genconf/completions/main.go

@@ -6,18 +6,18 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func CobraRunE(cmd *cobra.Command, args []string) error {
+func CobraRunE(cmd *cobra.Command, args []string) (err error) {
 	myArg := "bash"
 	if len(args) == 1 {
 		myArg = args[0]
 	}
 	switch myArg {
 	case "zsh":
-		cmd.GenZshCompletion(os.Stdout)
+		err = cmd.Parent().Parent().GenZshCompletion(os.Stdout)
 	case "fish":
-		cmd.GenFishCompletion(os.Stdout, true)
+		err = cmd.Parent().Parent().GenFishCompletion(os.Stdout, true)
 	default:
-		cmd.GenBashCompletion(os.Stdout)
+		err = cmd.Parent().Parent().GenBashCompletion(os.Stdout)
 	}
-	return nil
+	return
 }

internal/app/wwctl/genconf/man/main.go

@@ -0,0 +1,15 @@
+package man
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+)
+
+func CobraRunE(cmd *cobra.Command, args []string) (err error) {
+	header := &doc.GenManHeader{
+		Title:   "WWCTL",
+		Section: "1",
+	}
+	err = doc.GenManTree(cmd.Parent().Parent(), header, args[0])
+	return
+}

internal/app/wwctl/genconf/man/root.go

@@ -0,0 +1,23 @@
+package man
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var (
+	baseCmd = &cobra.Command{
+		Use:     "man",
+		Short:   "manpage generation",
+		Long:    "This command generates the man pages for all commands, needs target dir as argument",
+		RunE:    CobraRunE,
+		Args:    cobra.ExactArgs(1),
+		Aliases: []string{"man_pages"},
+	}
+)
+
+func init() {
+}
+
+func GetCommand() *cobra.Command {
+	return baseCmd
+}

internal/app/wwctl/genconf/root.go

@@ -2,6 +2,7 @@ package genconf
 
 import (
 	"github.com/hpcng/warewulf/internal/app/wwctl/genconf/completions"
+	"github.com/hpcng/warewulf/internal/app/wwctl/genconf/man"
 	"github.com/spf13/cobra"
 )
 
@@ -13,11 +14,13 @@ var (
 		Args:    cobra.ExactArgs(0),
 		Aliases: []string{"cnf"},
 	}
-	ListFull bool
+	ListFull  bool
+	WWctlRoot *cobra.Command
 )
 
 func init() {
 	baseCmd.AddCommand(completions.GetCommand())
+	baseCmd.AddCommand(man.GetCommand())
 }
 
 // GetRootCommand returns the root cobra.Command for the application.