commands: Fix the config command

It now also accepts the `-s` (source) flag.

See #4598

commands/config.go

@@ -0,0 +1,77 @@
+// Copyright 2015 The Hugo Authors. All rights reserved.
+//
+// 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.Print the version number of Hug
+
+package commands
+
+import (
+	"reflect"
+	"sort"
+
+	"github.com/spf13/cobra"
+	jww "github.com/spf13/jwalterweatherman"
+	"github.com/spf13/viper"
+)
+
+var _ cmder = (*configCmd)(nil)
+
+type configCmd struct {
+	hugoBuilderCommon
+	*baseCmd
+}
+
+func newConfigCmd() *configCmd {
+	cc := &configCmd{}
+	cc.baseCmd = newBaseCmd(&cobra.Command{
+		Use:   "config",
+		Short: "Print the site configuration",
+		Long:  `Print the site configuration, both default and custom settings.`,
+		RunE:  cc.printConfig,
+	})
+
+	cc.cmd.Flags().StringVarP(&cc.source, "source", "s", "", "filesystem path to read files relative from")
+
+	return cc
+}
+
+func (c *configCmd) printConfig(cmd *cobra.Command, args []string) error {
+	cfg, err := initializeConfig(false, &c.hugoBuilderCommon, c, nil)
+
+	if err != nil {
+		return err
+	}
+
+	allSettings := cfg.Cfg.(*viper.Viper).AllSettings()
+
+	var separator string
+	if allSettings["metadataformat"] == "toml" {
+		separator = " = "
+	} else {
+		separator = ": "
+	}
+
+	var keys []string
+	for k := range allSettings {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		kv := reflect.ValueOf(allSettings[k])
+		if kv.Kind() == reflect.String {
+			jww.FEEDBACK.Printf("%s%s\"%+v\"\n", k, separator, allSettings[k])
+		} else {
+			jww.FEEDBACK.Printf("%s%s%+v\n", k, separator, allSettings[k])
+		}
+	}
+
+	return nil
+}