github.com/mfpierre/corectl@v0.5.6/main.go (about) 1 // Copyright 2015 - António Meireles <antonio.meireles@reformi.st> 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 16 package main 17 18 import ( 19 "fmt" 20 "log" 21 "os" 22 "runtime" 23 "strings" 24 "time" 25 26 "github.com/google/go-github/github" 27 "github.com/spf13/cobra" 28 ) 29 30 var ( 31 // RootCmd ... 32 RootCmd = &cobra.Command{ 33 Use: "corectl", 34 Short: "CoreOS over OSX made simple.", 35 Long: fmt.Sprintf("%s\n%s", 36 "CoreOS over OSX made simple.", 37 "❯❯❯ http://github.com/TheNewNormal/corectl"), 38 RunE: func(cmd *cobra.Command, args []string) (err error) { 39 versionCommand(cmd, args) 40 return cmd.Usage() 41 }, 42 } 43 versionCmd = &cobra.Command{ 44 Use: "version", Short: "Shows corectl version information", 45 Run: versionCommand, 46 } 47 engine sessionContext 48 // -ldflags "-X main.Version= 49 // `git describe --abbrev=6 --dirty=-unreleased --always --tags`" 50 Version, BuildDate string 51 ) 52 53 func main() { 54 if err := RootCmd.Execute(); err != nil { 55 os.Exit(-1) 56 } 57 } 58 func init() { 59 // logger defaults 60 log.SetFlags(0) 61 log.SetOutput(os.Stderr) 62 log.SetPrefix("[corectl] ") 63 64 RootCmd.PersistentFlags().Bool("debug", false, 65 "adds extra verbosity, and options, for debugging purposes "+ 66 "and/or power users") 67 68 RootCmd.SetUsageTemplate(HelpTemplate) 69 RootCmd.AddCommand(versionCmd) 70 71 // remaining defaults / startupChecks 72 engine.init() 73 } 74 75 func versionCommand(cmd *cobra.Command, args []string) { 76 var ( 77 err error 78 latest *github.RepositoryRelease 79 stamp, _ = time.Parse("2006-01-02T15:04:05MST", BuildDate) 80 ) 81 fmt.Printf("%s\n%s\n%s\n\n", "CoreOS over OSX made simple.", 82 " - http://github.com/TheNewNormal/corectl", 83 " Copyright (c) 2015-2016, António Meireles") 84 fmt.Printf("Running version: %s\n"+ 85 " built with %s, %v\n", 86 strings.TrimPrefix(Version, "v"), runtime.Version(), stamp) 87 88 if latest, _, err = 89 github.NewClient(nil).Repositories.GetLatestRelease("TheNewNormal", 90 "corectl"); err != nil { 91 return 92 } 93 fmt.Println("Latest upstream:", strings.TrimPrefix( 94 strings.Trim(github.Stringify(latest.Name), "\""), "v")) 95 }