diff options
Diffstat (limited to 'cmd/root.go')
-rw-r--r-- | cmd/root.go | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/cmd/root.go b/cmd/root.go new file mode 100644 index 0000000..91d46a7 --- /dev/null +++ b/cmd/root.go @@ -0,0 +1,89 @@ +// Copyright © 2018 Alex Goodman +// +// 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" + "os" + + homedir "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: "dive", + Short: "Docker Image Visualizer & Explorer", + Long: `Docker Image Visualizer & Explorer`, + Args: cobra.ExactArgs(1), + Run: analyze, +} + +// 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/.dive.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 ".dive" (without extension). + viper.AddConfigPath(home) + viper.SetConfigName(".dive") + } + + 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()) + } +} |