Move manpage gen to separate binary

This moves the man page generation to a separate binary

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

pkg/climan/cli.go

@@ -1,75 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package climan
-
-import (
-	"fmt"
-	"io/ioutil"
-	"path/filepath"
-
-	"github.com/pkg/errors"
-	"github.com/urfave/cli"
-)
-
-var Command = cli.Command{
-	Name:   "gen-man",
-	Usage:  "generate man pages for the cli application",
-	Hidden: true,
-	Flags: []cli.Flag{
-		cli.StringFlag{
-			Name:  "format,f",
-			Usage: "specify the format in (md:man)",
-			Value: "md",
-		},
-		cli.IntFlag{
-			Name:  "section,s",
-			Usage: "section of the man pages",
-			Value: 1,
-		},
-	},
-	Action: func(clix *cli.Context) (err error) {
-		// clear out the usage as we use banners that do not display in man pages
-		clix.App.Usage = ""
-		dir := clix.Args().First()
-		if dir == "" {
-			return errors.New("directory argument is required")
-		}
-		var (
-			data string
-			ext  string
-		)
-		switch clix.String("format") {
-		case "man":
-			data, err = clix.App.ToMan()
-		default:
-			data, err = clix.App.ToMarkdown()
-			ext = "md"
-		}
-		if err != nil {
-			return err
-		}
-		return ioutil.WriteFile(filepath.Join(dir, formatFilename(clix, clix.Int("section"), ext)), []byte(data), 0644)
-	},
-}
-
-func formatFilename(clix *cli.Context, section int, ext string) string {
-	s := fmt.Sprintf("%s.%d", clix.App.Name, section)
-	if ext != "" {
-		s += "." + ext
-	}
-	return s
-}