--- /dev/null
+// 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"
+ "path/filepath"
+
+ "github.com/spf13/cobra"
+ "github.com/spf13/viper"
+)
+
+var initCmd = &cobra.Command{
+ Use: "init [name]",
+ Aliases: []string{"initialize", "initialise", "create"},
+ Short: "Initialize a Cobra Application",
+ Long: `Initialize (cobra init) will create a new application, with a license
+and the appropriate structure for a Cobra-based CLI application.
+
+ * If a name is provided, it will be created in the current directory;
+ * If no name is provided, the current directory will be assumed;
+ * If a relative path is provided, it will be created inside $GOPATH
+ (e.g. github.com/spf13/hugo);
+ * If an absolute path is provided, it will be created;
+ * If the directory already exists but is empty, it will be used.
+
+Init will not use an existing directory with contents.`,
+
+ Run: func(cmd *cobra.Command, args []string) {
+ wd, err := os.Getwd()
+ if err != nil {
+ er(err)
+ }
+
+ var project *Project
+ if len(args) == 0 {
+ project = NewProjectFromPath(wd)
+ } else if len(args) == 1 {
+ arg := args[0]
+ if arg[0] == '.' {
+ arg = filepath.Join(wd, arg)
+ }
+ if filepath.IsAbs(arg) {
+ project = NewProjectFromPath(arg)
+ } else {
+ project = NewProject(arg)
+ }
+ } else {
+ er("please provide only one argument")
+ }
+
+ initializeProject(project)
+
+ fmt.Fprintln(cmd.OutOrStdout(), `Your Cobra application is ready at
+`+project.AbsPath()+`.
+
+Give it a try by going there and running `+"`go run main.go`."+`
+Add commands to it by running `+"`cobra add [cmdname]`.")
+ },
+}
+
+func initializeProject(project *Project) {
+ if !exists(project.AbsPath()) { // If path doesn't yet exist, create it
+ err := os.MkdirAll(project.AbsPath(), os.ModePerm)
+ if err != nil {
+ er(err)
+ }
+ } else if !isEmpty(project.AbsPath()) { // If path exists and is not empty don't use it
+ er("Cobra will not create a new project in a non empty directory: " + project.AbsPath())
+ }
+
+ // We have a directory and it's empty. Time to initialize it.
+ createLicenseFile(project.License(), project.AbsPath())
+ createMainFile(project)
+ createRootCmdFile(project)
+}
+
+func createLicenseFile(license License, path string) {
+ data := make(map[string]interface{})
+ data["copyright"] = copyrightLine()
+
+ // Generate license template from text and data.
+ text, err := executeTemplate(license.Text, data)
+ if err != nil {
+ er(err)
+ }
+
+ // Write license text to LICENSE file.
+ err = writeStringToFile(filepath.Join(path, "LICENSE"), text)
+ if err != nil {
+ er(err)
+ }
+}
+
+func createMainFile(project *Project) {
+ mainTemplate := `{{ comment .copyright }}
+{{if .license}}{{ comment .license }}{{end}}
+
+package main
+
+import "{{ .importpath }}"
+
+func main() {
+ cmd.Execute()
+}
+`
+ data := make(map[string]interface{})
+ data["copyright"] = copyrightLine()
+ data["license"] = project.License().Header
+ data["importpath"] = path.Join(project.Name(), filepath.Base(project.CmdPath()))
+
+ mainScript, err := executeTemplate(mainTemplate, data)
+ if err != nil {
+ er(err)
+ }
+
+ err = writeStringToFile(filepath.Join(project.AbsPath(), "main.go"), mainScript)
+ if err != nil {
+ er(err)
+ }
+}
+
+func createRootCmdFile(project *Project) {
+ template := `{{comment .copyright}}
+{{if .license}}{{comment .license}}{{end}}
+
+package cmd
+
+import (
+ "fmt"
+ "os"
+{{if .viper}}
+ homedir "github.com/mitchellh/go-homedir"{{end}}
+ "github.com/spf13/cobra"{{if .viper}}
+ "github.com/spf13/viper"{{end}}
+){{if .viper}}
+
+var cfgFile string{{end}}
+
+// RootCmd represents the base command when called without any subcommands
+var RootCmd = &cobra.Command{
+ Use: "{{.appName}}",
+ Short: "A brief description of your application",
+ Long: ` + "`" + `A longer description that spans multiple lines and likely contains
+examples and usage of using your application. 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.` + "`" + `,
+ // Uncomment the following line if your bare application
+ // has an action associated with it:
+ // Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+ if err := RootCmd.Execute(); err != nil {
+ fmt.Println(err)
+ os.Exit(1)
+ }
+}
+
+func init() { {{if .viper}}
+ cobra.OnInitialize(initConfig)
+{{end}}
+ // Here you will define your flags and configuration settings.
+ // Cobra supports persistent flags, which, if defined here,
+ // will be global for your application.{{ if .viper }}
+ RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.{{ .appName }}.yaml)"){{ else }}
+ // RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.{{ .appName }}.yaml)"){{ end }}
+
+ // Cobra also supports local flags, which will only run
+ // when this action is called directly.
+ RootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}{{ if .viper }}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+ if cfgFile != "" {
+ // Use config file from the flag.
+ viper.SetConfigFile(cfgFile)
+ } else {
+ // Find home directory.
+ home, err := homedir.Dir()
+ if err != nil {
+ fmt.Println(err)
+ os.Exit(1)
+ }
+
+ // Search config in home directory with name ".{{ .appName }}" (without extension).
+ viper.AddConfigPath(home)
+ viper.SetConfigName(".{{ .appName }}")
+ }
+
+ viper.AutomaticEnv() // read in environment variables that match
+
+ // If a config file is found, read it in.
+ if err := viper.ReadInConfig(); err == nil {
+ fmt.Println("Using config file:", viper.ConfigFileUsed())
+ }
+}{{ end }}
+`
+
+ data := make(map[string]interface{})
+ data["copyright"] = copyrightLine()
+ data["viper"] = viper.GetBool("useViper")
+ data["license"] = project.License().Header
+ data["appName"] = path.Base(project.Name())
+
+ rootCmdScript, err := executeTemplate(template, data)
+ if err != nil {
+ er(err)
+ }
+
+ err = writeStringToFile(filepath.Join(project.CmdPath(), "root.go"), rootCmdScript)
+ if err != nil {
+ er(err)
+ }
+
+}
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