feat(fmt): add fmt command (#59)

.conform.yaml

@@ -19,6 +19,7 @@ policies:
         - "ci"
         - "cli"
         - "docker"
+        - "fmt"
         - "git"
         - "metadata"
         - "pipeline"

cmd/fmt.go

@@ -0,0 +1,77 @@
+// Copyright © 2018 NAME HERE <EMAIL ADDRESS>
+//
+// 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 cmd
+
+import (
+	"io/ioutil"
+	"log"
+	"sort"
+
+	"github.com/spf13/cobra"
+	yaml "gopkg.in/yaml.v2"
+)
+
+// fmtCmd represents the fmt command
+var fmtCmd = &cobra.Command{
+	Use:   "fmt",
+	Short: "A brief description of your command",
+	Long: `A longer description that spans multiple lines and likely contains examples
+and usage of using your command. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		configBytes, err := ioutil.ReadFile(".conform.yaml")
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+		m := yaml.MapSlice{}
+		err = yaml.Unmarshal(configBytes, &m)
+		if err != nil {
+			log.Fatalf(err.Error())
+		}
+		for _, v := range m {
+			if v.Key.(string) == "tasks" || v.Key.(string) == "stages" {
+				mapSlice := v.Value.(yaml.MapSlice)
+				sort.Slice(mapSlice, func(i, j int) bool {
+					return mapSlice[i].Key.(string) < mapSlice[j].Key.(string)
+				})
+			}
+		}
+		configBytes, err = yaml.Marshal(m)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+		err = ioutil.WriteFile(".conform.yaml", configBytes, 0644)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(fmtCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// fmtCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// fmtCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}