rclone/cmd/gendocs/gendocs.go
2019-10-14 17:02:09 +01:00

115 lines
2.6 KiB
Go

package gendocs
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/rclone/rclone/cmd"
"github.com/spf13/cobra"
"github.com/spf13/cobra/doc"
"github.com/spf13/pflag"
)
func init() {
cmd.Root.AddCommand(commandDefinition)
}
const gendocFrontmatterTemplate = `---
date: %s
title: "%s"
slug: %s
url: %s
---
`
var commandDefinition = &cobra.Command{
Use: "gendocs output_directory",
Short: `Output markdown docs for rclone to the directory supplied.`,
Long: `
This produces markdown docs for the rclone commands to the directory
supplied. These are in a format suitable for hugo to render into the
rclone.org website.`,
RunE: func(command *cobra.Command, args []string) error {
cmd.CheckArgs(1, 1, command, args)
now := time.Now().Format(time.RFC3339)
// Create the directory structure
root := args[0]
out := filepath.Join(root, "commands")
err := os.MkdirAll(out, 0777)
if err != nil {
return err
}
// Write the flags page
var buf bytes.Buffer
cmd.Root.SetOutput(&buf)
cmd.Root.SetArgs([]string{"help", "flags"})
cmd.GeneratingDocs = true
err = cmd.Root.Execute()
if err != nil {
return err
}
flagsHelp := strings.Replace(buf.String(), "YYYY-MM-DD", now, -1)
err = ioutil.WriteFile(filepath.Join(root, "flags.md"), []byte(flagsHelp), 0777)
if err != nil {
return err
}
// markup for the docs files
prepender := func(filename string) string {
name := filepath.Base(filename)
base := strings.TrimSuffix(name, path.Ext(name))
url := "/commands/" + strings.ToLower(base) + "/"
return fmt.Sprintf(gendocFrontmatterTemplate, now, strings.Replace(base, "_", " ", -1), base, url)
}
linkHandler := func(name string) string {
base := strings.TrimSuffix(name, path.Ext(name))
return "/commands/" + strings.ToLower(base) + "/"
}
// Hide all of the root entries flags
cmd.Root.Flags().VisitAll(func(flag *pflag.Flag) {
flag.Hidden = true
})
err = doc.GenMarkdownTreeCustom(cmd.Root, out, prepender, linkHandler)
if err != nil {
return err
}
// Munge the files to add a link to the global flags page
err = filepath.Walk(out, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() {
b, err := ioutil.ReadFile(path)
if err != nil {
return err
}
doc := string(b)
doc = strings.Replace(doc, "\n### SEE ALSO", `
See the [global flags page](/flags/) for global options not listed here.
### SEE ALSO`, 1)
err = ioutil.WriteFile(path, []byte(doc), 0777)
if err != nil {
return err
}
}
return nil
})
if err != nil {
return err
}
return nil
},
}