add completion command to generate shell completion scripts

Use the cobra lib to automatically generate shell completion scripts.
We can use the completion command which is automatically added, since it
is not importent for most users we hide it.

To test the new script on bash you can use `source <(bin/skopeo completion bash)`

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
This commit is contained in:
Paul Holzinger 2022-05-18 15:21:31 +02:00
parent 4b924061b8
commit 6863fe2d35
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@ -63,11 +63,8 @@ func createApp() (*cobra.Command, *globalOptions) {
},
SilenceUsage: true,
SilenceErrors: true,
// Currently, skopeo uses manually written completions. Cobra allows
// for auto-generating completions for various shells. Podman is
// already making us of that. If Skopeo decides to follow, please
// remove the line below (and hide the `completion` command).
CompletionOptions: cobra.CompletionOptions{DisableDefaultCmd: true},
// Hide the completion command which is provided by cobra
CompletionOptions: cobra.CompletionOptions{HiddenDefaultCmd: true},
// This is documented to parse "local" (non-PersistentFlags) flags of parent commands before
// running subcommands and handling their options. We don't really run into such cases,
// because all of our flags on rootCommand are in PersistentFlags, except for the deprecated --tls-verify;