Add --format to hugo config

Now default to TOML.

4 files changed, 40 insertions, 8 deletions

diff --git a/commands/commandeer.go b/commands/commandeer.go
index 8e8522b28..912a55780 100644
--- a/commands/commandeer.go
+++ b/commands/commandeer.go
@@ -108,6 +108,9 @@ type rootCommand struct {
 	buildWatch  bool
 	environment string
 
+	// File format to read or write (TOML, YAML, JSON).
+	format string
+
 	// Common build flags.
 	baseURL              string
 	gc                   bool
@@ -405,6 +408,12 @@ func (r *rootCommand) PreRun(cd, runner *simplecobra.Commandeer) error {
 	if err != nil {
 		return err
 	}
+	switch r.format {
+	case "json", "toml", "yaml":
+		// OK
+	default:
+		return fmt.Errorf("unsupported format %q; must be one of json, toml or yaml", r.format)
+	}
 
 	loggers.PanicOnWarning.Store(r.panicOnWarning)
 	r.commonConfigs = lazycache.New[int32, *commonConfig](lazycache.Options{MaxEntries: 5})
@@ -476,6 +485,7 @@ Complete documentation is available at https://gohugo.io/.`
 
 	// Configure persistent flags
 	cmd.PersistentFlags().StringVarP(&r.source, "source", "s", "", "filesystem path to read files relative from")
+	cmd.PersistentFlags().StringVar(&r.format, "format", "toml", "preferred file format (toml, yaml or json)")
 	cmd.PersistentFlags().SetAnnotation("source", cobra.BashCompSubdirsInDir, []string{})
 	cmd.PersistentFlags().StringP("destination", "d", "", "filesystem path to write files to")
 	cmd.PersistentFlags().SetAnnotation("destination", cobra.BashCompSubdirsInDir, []string{})
diff --git a/commands/config.go b/commands/config.go
index 80b869a28..ce3ad04fa 100644
--- a/commands/config.go
+++ b/commands/config.go
@@ -14,9 +14,11 @@
 package commands
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/bep/simplecobra"
@@ -56,14 +58,34 @@ func (c *configCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg
 	}
 	config := conf.configs.Base
 
-	// Print it as JSON.
-	dec := json.NewEncoder(os.Stdout)
+	var buf bytes.Buffer
+	dec := json.NewEncoder(&buf)
 	dec.SetIndent("", "  ")
 	dec.SetEscapeHTML(false)
 
 	if err := dec.Encode(parser.ReplacingJSONMarshaller{Value: config, KeysToLower: true, OmitEmpty: true}); err != nil {
 		return err
 	}
+
+	format := strings.ToLower(c.r.format)
+
+	switch format {
+	case "json":
+		os.Stdout.Write(buf.Bytes())
+	default:
+		// Decode the JSON to a map[string]interface{} and then unmarshal it again to the correct format.
+		var m map[string]interface{}
+		if err := json.Unmarshal(buf.Bytes(), &m); err != nil {
+			return err
+		}
+		switch format {
+		case "yaml":
+			return parser.InterfaceToConfig(m, metadecoders.YAML, os.Stdout)
+		case "toml":
+			return parser.InterfaceToConfig(m, metadecoders.TOML, os.Stdout)
+		}
+	}
+
 	return nil
 }
 
diff --git a/commands/new.go b/commands/new.go
index 5a940a1cd..c3ba09162 100644
--- a/commands/new.go
+++ b/commands/new.go
@@ -34,9 +34,8 @@ import (
 
 func newNewCommand() *newCommand {
 	var (
-		configFormat string
-		force        bool
-		contentType  string
+		force       bool
+		contentType string
 	)
 
 	var c *newCommand
@@ -119,7 +118,7 @@ Use ` + "`hugo new [contentPath]`" + ` to create new content.`,
 							return errors.New(createpath + " already exists and is not empty. See --force.")
 
 						case !isEmpty && force:
-							all := append(dirs, filepath.Join(createpath, "hugo."+configFormat))
+							all := append(dirs, filepath.Join(createpath, "hugo."+r.format))
 							for _, path := range all {
 								if exists, _ := helpers.Exists(path, sourceFs); exists {
 									return errors.New(path + " already exists")
@@ -134,7 +133,7 @@ Use ` + "`hugo new [contentPath]`" + ` to create new content.`,
 						}
 					}
 
-					c.newSiteCreateConfig(sourceFs, createpath, configFormat)
+					c.newSiteCreateConfig(sourceFs, createpath, r.format)
 
 					// Create a default archetype file.
 					helpers.SafeWriteToDisk(filepath.Join(archeTypePath, "default.md"),
@@ -146,7 +145,6 @@ Use ` + "`hugo new [contentPath]`" + ` to create new content.`,
 					return nil
 				},
 				withc: func(cmd *cobra.Command) {
-					cmd.Flags().StringVarP(&configFormat, "format", "f", "toml", "config file format")
 					cmd.Flags().BoolVar(&force, "force", false, "init inside non-empty directory")
 				},
 			},
diff --git a/testscripts/commands/config.txt b/testscripts/commands/config.txt
index 7f8fc4974..b1dba8d11 100644
--- a/testscripts/commands/config.txt
+++ b/testscripts/commands/config.txt
@@ -5,6 +5,8 @@ stdout 'Print the site configuration'
 
 
 hugo config
+stdout 'baseurl = .https://example.com/'
+hugo config --format json
 stdout '\"baseurl\": \"https://example.com/\",'
 
 hugo config mounts -h