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annotate cmd/sievemgr/main.go @ 3:3cd182bff992

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Show warning messages in put output
author Guido Berhoerster <guido+sievemgr@berhoerster.name>
date Tue, 27 Oct 2020 17:54:58 +0100
parents 0cd5a454dfb4
children f925f15d8ce5
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0cd5a454dfb4 Add README file
Guido Berhoerster <guido+sievemgr@berhoerster.name>
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1 // Copyright (C) 2020 Guido Berhoerster <guido+sievemgr@berhoerster.name>
0
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2 //
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3 // Permission is hereby granted, free of charge, to any person obtaining
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4 // a copy of this software and associated documentation files (the
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5 // "Software"), to deal in the Software without restriction, including
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6 // without limitation the rights to use, copy, modify, merge, publish,
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7 // distribute, sublicense, and/or sell copies of the Software, and to
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8 // permit persons to whom the Software is furnished to do so, subject to
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9 // the following conditions:
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10 //
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11 // The above copyright notice and this permission notice shall be included
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12 // in all copies or substantial portions of the Software.
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13 //
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14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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17 // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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18 // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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19 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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20 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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21
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22 package main
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23
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24 import (
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25 "errors"
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26 "flag"
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27 "fmt"
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28 "os"
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29 )
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30
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31 const (
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32 exitSuccess = iota
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33 exitFailure
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34 exitUsage
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35 )
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36
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37 type usageError string
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38
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39 func (e usageError) Error() string {
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40 return string(e)
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41 }
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42
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43 var (
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44 skipCertVerify bool
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45 username string
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46 passwordFilename string
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47 )
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48
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49 var cmds = []*command{
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50 cmdList,
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51 cmdPut,
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52 cmdGet,
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53 cmdActivate,
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54 cmdDeactivate,
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55 cmdDelete,
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56 cmdInfo,
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57 }
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58
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59 func usage() {
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60 fmt.Fprintf(flag.CommandLine.Output(),
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61 "usage:\n %s [options] [subcommand [options] [arguments]]\n",
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62 flag.CommandLine.Name())
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63 fmt.Fprintln(flag.CommandLine.Output(), "subcommands:")
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64 for _, cmd := range cmds {
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65 fmt.Fprintf(flag.CommandLine.Output(), " %s\n", cmd.Name())
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66 }
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67 fmt.Fprintln(flag.CommandLine.Output(), "global options:")
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68 flag.PrintDefaults()
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69 }
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70
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71 func main() {
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72 flag.Usage = usage
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73 flag.BoolVar(&skipCertVerify, "I", false,
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74 "Skip TLS certificate verification")
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75 flag.Parse()
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76 if flag.NArg() == 0 {
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77 fmt.Fprintln(flag.CommandLine.Output(), "missing subcommand")
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78 usage()
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79 os.Exit(exitUsage)
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80 }
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81
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82 name := flag.Arg(0)
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83 var cmd *command
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84 for _, c := range cmds {
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85 if c.Name() == name {
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86 cmd = c
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87 break
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88 }
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89 }
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90 if cmd == nil {
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91 fmt.Fprintf(flag.CommandLine.Output(),
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92 "unknown subcommand %q\n", name)
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93 usage()
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94 os.Exit(exitUsage)
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95 }
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96
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97 cmd.Flag.Init(cmd.Name(), flag.ExitOnError)
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98 cmd.Flag.Usage = cmd.Usage
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99 args := flag.Args()
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100 if err := cmd.Flag.Parse(args[1:]); err != nil {
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101 fmt.Fprintln(flag.CommandLine.Output(), err)
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102 os.Exit(exitFailure)
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103 }
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104
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105 if err := cmd.Run(cmd, cmd.Flag.Args()); err != nil {
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106 fmt.Fprintln(flag.CommandLine.Output(), err)
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107
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108 var uerr usageError
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109 if errors.As(err, &uerr) {
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110 cmd.Usage()
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111 os.Exit(exitUsage)
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112 }
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113
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114 os.Exit(exitFailure)
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115 }
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116 }