/
root.go
112 lines (96 loc) · 3.32 KB
/
root.go
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// Copyright © 2018 Dmitry Mozzherin <dmozzherin@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package cmd
import (
"fmt"
"log"
"os"
"github.com/gnames/gnfinder"
"github.com/mitchellh/go-homedir"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
cfgFile string
)
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "gnfinder",
Short: "Finds scientific names in plain texts",
Long: `Finds scientific names in plain UTF-8 encoded texts`,
// Uncomment the following line if your bare application has an action
// associated with it:
Run: func(cmd *cobra.Command, args []string) {
version, err := cmd.Flags().GetBool("version")
if err != nil {
log.Println(err)
os.Exit(1)
}
if version {
fmt.Printf("\nversion: %s\nbuild: %s\n\n", gnfinder.Version, gnfinder.Build)
os.Exit(0)
}
if len(args) == 0 {
cmd.Help()
os.Exit(0)
}
},
}
// 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(ver string) {
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/.gnfinder.yaml)")
// Cobra also supports local flags, which will only run
// when this action is called directly.
rootCmd.Flags().BoolP("version", "v", false, "show version.")
log.SetFlags(0)
}
// 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 ".gnfinder" (without extension).
viper.AddConfigPath(home)
}
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())
}
}