chore: update CLI to CLIO (#2001)

Signed-off-by: Keith Zantow <kzantow@gmail.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
Co-authored-by: Alex Goodman <wagoodman@users.noreply.github.com>

cmd/syft/cli/cli.go

@@ -0,0 +1,81 @@
+package cli
+
+import (
+	"os"
+
+	cranecmd "github.com/google/go-containerregistry/cmd/crane/cmd"
+
+	"github.com/anchore/clio"
+	"github.com/anchore/stereoscope"
+	"github.com/anchore/syft/cmd/syft/cli/commands"
+	handler "github.com/anchore/syft/cmd/syft/cli/ui"
+	"github.com/anchore/syft/cmd/syft/internal/ui"
+	"github.com/anchore/syft/internal/bus"
+	"github.com/anchore/syft/internal/log"
+	"github.com/anchore/syft/internal/redact"
+)
+
+// New constructs the `syft packages` command, aliases the root command to `syft packages`,
+// and constructs the `syft power-user` command. It is also responsible for
+// organizing flag usage and injecting the application config for each command.
+// It also constructs the syft attest command and the syft version command.
+// `RunE` is the earliest that the complete application configuration can be loaded.
+func New(id clio.Identification) clio.Application {
+	clioCfg := clio.NewSetupConfig(id).
+		WithGlobalConfigFlag().   // add persistent -c <path> for reading an application config from
+		WithGlobalLoggingFlags(). // add persistent -v and -q flags tied to the logging config
+		WithConfigInRootHelp().   // --help on the root command renders the full application config in the help text
+		WithUIConstructor(
+			// select a UI based on the logging configuration and state of stdin (if stdin is a tty)
+			func(cfg clio.Config) ([]clio.UI, error) {
+				noUI := ui.None(cfg.Log.Quiet)
+				if !cfg.Log.AllowUI(os.Stdin) {
+					return []clio.UI{noUI}, nil
+				}
+
+				h := handler.New(handler.DefaultHandlerConfig())
+
+				return []clio.UI{
+					ui.New(h, false, cfg.Log.Quiet),
+					noUI,
+				}, nil
+			},
+		).
+		WithInitializers(
+			func(state *clio.State) error {
+				// clio is setting up and providing the bus, redact store, and logger to the application. Once loaded,
+				// we can hoist them into the internal packages for global use.
+				stereoscope.SetBus(state.Bus)
+				bus.Set(state.Bus)
+				redact.Set(state.RedactStore)
+				log.Set(state.Logger)
+				stereoscope.SetLogger(state.Logger)
+
+				return nil
+			},
+		).
+		WithPostRuns(func(state *clio.State, err error) {
+			stereoscope.Cleanup()
+		})
+
+	app := clio.New(*clioCfg)
+
+	// since root is aliased as the packages cmd we need to construct this command first
+	// we also need the command to have information about the `root` options because of this alias
+	packagesCmd := commands.Packages(app)
+
+	// rootCmd is currently an alias for the packages command
+	rootCmd := commands.Root(app, packagesCmd)
+
+	// add sub-commands
+	rootCmd.AddCommand(
+		packagesCmd,
+		commands.PowerUser(app),
+		commands.Attest(app),
+		commands.Convert(app),
+		clio.VersionCommand(id),
+		cranecmd.NewCmdAuthLogin(id.Name), // syft login uses the same command as crane
+	)
+
+	return app
+}