add add command functionality to cobra

cobra/cmd/add.go

@@ -0,0 +1,125 @@
+// Copyright © 2015 Steve Francia <spf@spf13.com>.
+//
+// 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 (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+func init() {
+	RootCmd.AddCommand(addCmd)
+}
+
+var pName string
+
+// initialize Command
+var addCmd = &cobra.Command{
+	Use:     "add [command name]",
+	Aliases: []string{"command"},
+	Short:   "Add a command to a Cobra Application",
+	Long: `Add will create a new command, with a license and the appropriate structure
+	for a Cobra based CLI application and register it to it's parent (default RootCmd).
+
+  If you want your command to be public, pass in the command name with an initial upper case letter.
+
+  Example: cobra add server  -> resulting in a new cmd/server.go
+  `,
+
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) != 1 {
+			er("add needs a name for the command")
+		}
+		guessProjectPath()
+		createCmdFile(args[0])
+	},
+}
+
+func init() {
+	addCmd.Flags().StringVarP(&pName, "parent", "p", "RootCmd", "name of parent command for this command")
+}
+
+func parentName() string {
+	if !strings.HasSuffix(strings.ToLower(pName), "cmd") {
+		return pName + "Cmd"
+	}
+
+	return pName
+}
+
+func createCmdFile(cmdName string) {
+	lic := getLicense()
+
+	template := `{{ comment .copyright }}
+//
+{{ comment .license }}
+package cmd
+
+import (
+  "fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// {{.cmdName}}Cmd respresents the {{.cmdName}} command
+var {{ .cmdName }}Cmd = &cobra.Command{
+	Use:   "{{ .cmdName }}",
+	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) {
+    // TODO: Work your own magic here
+    fmt.Println("{{ .cmdName }} called")
+   },
+}
+
+func init() {
+	{{ .parentName }}.AddCommand({{ .cmdName }}Cmd)
+
+	// Here you will define your flags and configuration settings
+
+	// Cobra supports Persistent Flags which will work for this command and all subcommands
+  // {{.cmdName}}Cmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command is called directly
+	// {{.cmdName}}Cmd.Flags().BoolP("toggle", "t", false, "Help message for toggle" )
+
+}
+`
+
+	var data map[string]interface{}
+	data = make(map[string]interface{})
+
+	data["copyright"] = copyrightLine()
+	data["license"] = lic.Header
+	data["appName"] = projectName()
+	data["viper"] = viper.GetBool("useViper")
+	data["parentName"] = parentName()
+	data["cmdName"] = cmdName
+
+	err := writeTemplateToFile(ProjectPath()+string(os.PathSeparator)+guessCmdDir(), cmdName+".go", template, data)
+	if err != nil {
+		er(err)
+	}
+	fmt.Println(cmdName, "created at", filepath.Join(ProjectPath()+string(os.PathSeparator)+guessCmdDir(), cmdName+".go"))
+}