75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
package pigeon
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/spf13/cobra"
|
|
|
|
homedir "github.com/mitchellh/go-homedir"
|
|
"github.com/spf13/viper"
|
|
)
|
|
|
|
var cfgFile string
|
|
|
|
// rootCmd represents the base command when called without any subcommands
|
|
var rootCmd = &cobra.Command{
|
|
Use: "pigeon-cli",
|
|
Short: "An off-grid, serverless, peer-to-peer protocol for building software that works on poor internet connections, or entirely offline.",
|
|
Long: `Pigeon enables offline and off-grid computer systems to exchange messages
|
|
in a way that is delay tolerant, tamper resistant and easily transmitted
|
|
over non-networked systems (such as sneakernet).`,
|
|
Run: func(cmd *cobra.Command, args []string) {
|
|
fmt.Println("Hello, Cobra!")
|
|
},
|
|
}
|
|
|
|
// 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() {
|
|
cobra.OnInitialize(initConfig)
|
|
|
|
// Here you will define your flags and configuration settings.
|
|
// Cobra supports persistent flags, which, if defined here,
|
|
// will be global for your application.
|
|
|
|
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.pigeon.yaml)")
|
|
|
|
// 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")
|
|
}
|
|
|
|
// 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 ".pigeon" (without extension).
|
|
viper.AddConfigPath(home)
|
|
viper.SetConfigName(".pigeon")
|
|
}
|
|
|
|
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())
|
|
}
|
|
}
|