package images import ( "github.com/containers/common/pkg/report" "github.com/containers/podman/v3/cmd/podman/common" "github.com/containers/podman/v3/cmd/podman/registry" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/pkg/errors" "github.com/spf13/cobra" "github.com/spf13/pflag" ) var ( // podman container _inspect_ diffCmd = &cobra.Command{ Use: "diff [options] IMAGE", Args: cobra.ExactArgs(1), Short: "Inspect changes to the image's file systems", Long: `Displays changes to the image's filesystem. The image will be compared to its parent layer.`, RunE: diff, ValidArgsFunction: common.AutocompleteImages, Example: `podman image diff myImage podman image diff --format json redis:alpine`, } diffOpts *entities.DiffOptions ) func init() { registry.Commands = append(registry.Commands, registry.CliCommand{ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode}, Command: diffCmd, Parent: imageCmd, }) diffFlags(diffCmd.Flags()) } func diffFlags(flags *pflag.FlagSet) { diffOpts = &entities.DiffOptions{} flags.BoolVar(&diffOpts.Archive, "archive", true, "Save the diff as a tar archive") _ = flags.MarkDeprecated("archive", "Provided for backwards compatibility, has no impact on output.") formatFlagName := "format" flags.StringVar(&diffOpts.Format, formatFlagName, "", "Change the output format") _ = diffCmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(nil)) } func diff(cmd *cobra.Command, args []string) error { if diffOpts.Latest { return errors.New("image diff does not support --latest") } results, err := registry.ImageEngine().Diff(registry.GetContext(), args[0], *diffOpts) if err != nil { return err } switch { case report.IsJSON(diffOpts.Format): return common.ChangesToJSON(results) case diffOpts.Format == "": return common.ChangesToTable(results) default: return errors.New("only supported value for '--format' is 'json'") } } func Diff(cmd *cobra.Command, args []string, options entities.DiffOptions) error { diffOpts = &options return diff(cmd, args) }