156 lines
3.9 KiB
Go
156 lines
3.9 KiB
Go
package gendoc
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"text/template"
|
|
|
|
"github.com/spf13/cobra"
|
|
"github.com/spf13/cobra/doc"
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
const (
|
|
gendocTypeFlag = "type"
|
|
|
|
gendocMarkdown = "md"
|
|
gendocMan = "man"
|
|
|
|
depthFlag = "depth"
|
|
extensionFlag = "extension"
|
|
)
|
|
|
|
// Options for doc generation.
|
|
type Options struct {
|
|
// Parameters for man generation. By default use (1) section and `FrostFS` source.
|
|
ManHeader *doc.GenManHeader
|
|
}
|
|
|
|
func (o *Options) fillDefaults() {
|
|
if o.ManHeader == nil {
|
|
o.ManHeader = &doc.GenManHeader{
|
|
Section: "1",
|
|
Source: "FrostFS",
|
|
}
|
|
}
|
|
}
|
|
|
|
// Command returns command which generates user documentation for the argument.
|
|
func Command(rootCmd *cobra.Command, opts Options) *cobra.Command {
|
|
opts.fillDefaults()
|
|
|
|
gendocCmd := &cobra.Command{
|
|
Use: "gendoc <dir>",
|
|
Short: "Generate documentation for this command",
|
|
Long: `Generate documentation for this command. If the template is not provided,
|
|
builtin cobra generator is used and each subcommand is placed in
|
|
a separate file in the same directory.
|
|
|
|
The last optional argument specifies the template to use with text/template.
|
|
In this case there is a number of helper functions which can be used:
|
|
replace STR FROM TO -- same as strings.ReplaceAll
|
|
join ARRAY SEPARATOR -- same as strings.Join
|
|
split STR SEPARATOR -- same as strings.Split
|
|
fullUse CMD -- slice of all command names starting from the parent
|
|
listFlags CMD -- list of command flags
|
|
`,
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
|
if len(args) == 0 {
|
|
_ = cmd.Usage()
|
|
os.Exit(1)
|
|
}
|
|
|
|
err := os.MkdirAll(args[0], os.ModePerm)
|
|
if err != nil {
|
|
return fmt.Errorf("can't create directory: %w", err)
|
|
}
|
|
|
|
if len(args) == 2 {
|
|
data, err := os.ReadFile(args[1])
|
|
if err != nil {
|
|
return fmt.Errorf("can't read the template '%s': %w", args[1], err)
|
|
}
|
|
|
|
return generateTemplate(cmd, rootCmd, args[0], data)
|
|
}
|
|
|
|
typ, _ := cmd.Flags().GetString(gendocTypeFlag)
|
|
switch typ {
|
|
case gendocMarkdown:
|
|
return doc.GenMarkdownTree(rootCmd, args[0])
|
|
case gendocMan:
|
|
return doc.GenManTree(rootCmd, opts.ManHeader, args[0])
|
|
default:
|
|
return errors.New("type must be 'md' or 'man'")
|
|
}
|
|
},
|
|
}
|
|
|
|
ff := gendocCmd.Flags()
|
|
ff.StringP(gendocTypeFlag, "t", gendocMarkdown, "Type for the documentation ('md' or 'man')")
|
|
ff.Int(depthFlag, 1, "If template is specified, unify all commands starting from depth in a single file. Default: 1.")
|
|
ff.StringP(extensionFlag, "e", "", "If the template is specified, string to append to the output file names")
|
|
return gendocCmd
|
|
}
|
|
|
|
func generateTemplate(cmd *cobra.Command, rootCmd *cobra.Command, outDir string, tmpl []byte) error {
|
|
depth, _ := cmd.Flags().GetInt(depthFlag)
|
|
ext, _ := cmd.Flags().GetString(extensionFlag)
|
|
|
|
tm := template.New("doc")
|
|
tm.Funcs(template.FuncMap{
|
|
"replace": strings.ReplaceAll,
|
|
"split": strings.Split,
|
|
"join": strings.Join,
|
|
"fullUse": fullUse,
|
|
"listFlags": listFlags,
|
|
})
|
|
|
|
tm, err := tm.Parse(string(tmpl))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return visit(rootCmd, outDir, ext, depth, tm)
|
|
}
|
|
|
|
func visit(rootCmd *cobra.Command, outDir string, ext string, depth int, tm *template.Template) error {
|
|
if depth == 0 {
|
|
name := strings.Join(fullUse(rootCmd), "-")
|
|
name = strings.TrimSpace(name)
|
|
name = strings.ReplaceAll(name, " ", "-")
|
|
name = filepath.Join(outDir, name) + ext
|
|
f, err := os.Create(name)
|
|
if err != nil {
|
|
return fmt.Errorf("can't create file '%s': %w", name, err)
|
|
}
|
|
defer f.Close()
|
|
return tm.Execute(f, rootCmd)
|
|
}
|
|
|
|
for _, c := range rootCmd.Commands() {
|
|
err := visit(c, outDir, ext, depth-1, tm)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func fullUse(c *cobra.Command) []string {
|
|
if c == nil {
|
|
return nil
|
|
}
|
|
return append(fullUse(c.Parent()), c.Name())
|
|
}
|
|
|
|
func listFlags(c *cobra.Command) []*pflag.Flag {
|
|
var res []*pflag.Flag
|
|
c.Flags().VisitAll(func(f *pflag.Flag) {
|
|
res = append(res, f)
|
|
})
|
|
return res
|
|
}
|