mirror of https://github.com/docker/cli.git
73 lines
2.9 KiB
Go
73 lines
2.9 KiB
Go
package container
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import (
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"strings"
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"sync"
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"github.com/docker/cli/cli/command/completion"
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"github.com/docker/docker/api/types/container"
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"github.com/moby/sys/capability"
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"github.com/moby/sys/signal"
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"github.com/spf13/cobra"
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)
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// allCaps is the magic value for "all capabilities".
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const allCaps = "ALL"
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// allLinuxCapabilities is a list of all known Linux capabilities.
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//
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// TODO(thaJeztah): add descriptions, and enable descriptions for our completion scripts (cobra.CompletionOptions.DisableDescriptions is currently set to "true")
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// TODO(thaJeztah): consider what casing we want to use for completion (see below);
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//
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// We need to consider what format is most convenient; currently we use the
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// canonical name (uppercase and "CAP_" prefix), however, tab-completion is
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// case-sensitive by default, so requires the user to type uppercase letters
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// to filter the list of options.
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//
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// Bash completion provides a `completion-ignore-case on` option to make completion
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// case-insensitive (https://askubuntu.com/a/87066), but it looks to be a global
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// option; the current cobra.CompletionOptions also don't provide this as an option
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// to be used in the generated completion-script.
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//
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// Fish completion has `smartcase` (by default?) which matches any case if
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// all of the input is lowercase.
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//
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// Zsh does not appear have a dedicated option, but allows setting matching-rules
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// (see https://superuser.com/a/1092328).
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var allLinuxCapabilities = sync.OnceValue(func() []string {
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caps := capability.ListKnown()
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out := make([]string, 0, len(caps)+1)
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out = append(out, allCaps)
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for _, c := range caps {
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out = append(out, "CAP_"+strings.ToUpper(c.String()))
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}
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return out
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})
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// restartPolicies is a list of all valid restart-policies..
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//
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// TODO(thaJeztah): add descriptions, and enable descriptions for our completion scripts (cobra.CompletionOptions.DisableDescriptions is currently set to "true")
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var restartPolicies = []string{
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string(container.RestartPolicyDisabled),
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string(container.RestartPolicyAlways),
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string(container.RestartPolicyOnFailure),
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string(container.RestartPolicyUnlessStopped),
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}
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func completeLinuxCapabilityNames(cmd *cobra.Command, args []string, toComplete string) (names []string, _ cobra.ShellCompDirective) {
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return completion.FromList(allLinuxCapabilities()...)(cmd, args, toComplete)
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}
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func completeRestartPolicies(cmd *cobra.Command, args []string, toComplete string) (names []string, _ cobra.ShellCompDirective) {
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return completion.FromList(restartPolicies...)(cmd, args, toComplete)
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}
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func completeSignals(cmd *cobra.Command, args []string, toComplete string) (names []string, _ cobra.ShellCompDirective) {
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// TODO(thaJeztah): do we want to provide the full list here, or a subset?
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signalNames := make([]string, 0, len(signal.SignalMap))
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for k := range signal.SignalMap {
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signalNames = append(signalNames, k)
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}
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return completion.FromList(signalNames...)(cmd, args, toComplete)
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}
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