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102 lines
3 KiB
Go
102 lines
3 KiB
Go
package cobraadaptor
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import (
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/api/client/container"
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"github.com/docker/docker/api/client/image"
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"github.com/docker/docker/api/client/volume"
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"github.com/docker/docker/cli"
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cliflags "github.com/docker/docker/cli/flags"
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"github.com/docker/docker/pkg/term"
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"github.com/spf13/cobra"
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)
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// CobraAdaptor is an adaptor for supporting spf13/cobra commands in the
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// docker/cli framework
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type CobraAdaptor struct {
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rootCmd *cobra.Command
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dockerCli *client.DockerCli
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}
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// NewCobraAdaptor returns a new handler
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func NewCobraAdaptor(clientFlags *cliflags.ClientFlags) CobraAdaptor {
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stdin, stdout, stderr := term.StdStreams()
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dockerCli := client.NewDockerCli(stdin, stdout, stderr, clientFlags)
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var rootCmd = &cobra.Command{
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Use: "docker",
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SilenceUsage: true,
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SilenceErrors: true,
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}
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rootCmd.SetUsageTemplate(usageTemplate)
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rootCmd.SetHelpTemplate(helpTemplate)
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rootCmd.SetFlagErrorFunc(cli.FlagErrorFunc)
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rootCmd.SetOutput(stdout)
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rootCmd.AddCommand(
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container.NewCreateCommand(dockerCli),
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container.NewExportCommand(dockerCli),
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container.NewRunCommand(dockerCli),
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container.NewStopCommand(dockerCli),
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image.NewSearchCommand(dockerCli),
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volume.NewVolumeCommand(dockerCli),
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)
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rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
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rootCmd.PersistentFlags().MarkShorthandDeprecated("help", "please use --help")
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return CobraAdaptor{
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rootCmd: rootCmd,
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dockerCli: dockerCli,
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}
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}
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// Usage returns the list of commands and their short usage string for
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// all top level cobra commands.
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func (c CobraAdaptor) Usage() []cli.Command {
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cmds := []cli.Command{}
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for _, cmd := range c.rootCmd.Commands() {
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cmds = append(cmds, cli.Command{Name: cmd.Name(), Description: cmd.Short})
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}
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return cmds
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}
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func (c CobraAdaptor) run(cmd string, args []string) error {
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c.dockerCli.Initialize()
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// Prepend the command name to support normal cobra command delegation
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c.rootCmd.SetArgs(append([]string{cmd}, args...))
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return c.rootCmd.Execute()
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}
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// Command returns a cli command handler if one exists
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func (c CobraAdaptor) Command(name string) func(...string) error {
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for _, cmd := range c.rootCmd.Commands() {
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if cmd.Name() == name {
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return func(args ...string) error {
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return c.run(name, args)
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}
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}
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}
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return nil
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}
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var usageTemplate = `Usage: {{if not .HasSubCommands}}{{if .HasLocalFlags}}{{appendIfNotPresent .UseLine "[OPTIONS]"}}{{else}}{{.UseLine}}{{end}}{{end}}{{if .HasSubCommands}}{{ .CommandPath}} COMMAND{{end}}
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{{with or .Long .Short }}{{. | trim}}{{end}}{{if gt .Aliases 0}}
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Aliases:
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{{.NameAndAliases}}{{end}}{{if .HasExample}}
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Examples:
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{{ .Example }}{{end}}{{if .HasFlags}}
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Options:
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{{.Flags.FlagUsages | trimRightSpace}}{{end}}{{ if .HasAvailableSubCommands}}
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Commands:{{range .Commands}}{{if .IsAvailableCommand}}
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{{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{ if .HasSubCommands }}
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Run '{{.CommandPath}} COMMAND --help' for more information on a command.{{end}}
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`
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var helpTemplate = `
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{{if or .Runnable .HasSubCommands}}{{.UsageString}}{{end}}`
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