Refactor pmctl into new portmaster-start

cmds/portmaster-start/version.go

@@ -0,0 +1,79 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"sort"
+	"strings"
+	"text/tabwriter"
+
+	"github.com/safing/portbase/info"
+	"github.com/spf13/cobra"
+)
+
+var showShortVersion bool
+var showAllVersions bool
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Display various portmaster versions",
+	Args:  cobra.NoArgs,
+	PersistentPreRunE: func(*cobra.Command, []string) error {
+		if showAllVersions {
+			// if we are going to show all component versions
+			// we need the dataroot to be configured.
+			if err := configureDataRoot(); err != nil {
+				return err
+			}
+		}
+
+		return nil
+	},
+	RunE: func(*cobra.Command, []string) error {
+		if !showAllVersions {
+			if showShortVersion {
+				fmt.Println(info.Version())
+			}
+
+			fmt.Println(info.FullVersion())
+			return nil
+		}
+
+		fmt.Printf("portmaster-start %s\n\n", info.Version())
+		fmt.Printf("Components:\n")
+
+		all := registry.Export()
+		keys := make([]string, 0, len(all))
+		for identifier := range all {
+			keys = append(keys, identifier)
+		}
+		sort.Strings(keys)
+
+		tw := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
+		for _, identifier := range keys {
+			res := all[identifier]
+
+			if showShortVersion {
+				// in "short" mode, skip all resources that are irrelevant on that platform
+				if !strings.HasPrefix(identifier, "all") && !strings.HasPrefix(identifier, runtime.GOOS) {
+					continue
+				}
+			}
+
+			fmt.Fprintf(tw, "   %s\t%s\n", identifier, res.SelectedVersion.VersionNumber)
+		}
+		tw.Flush()
+
+		return nil
+	},
+}
+
+func init() {
+	flags := versionCmd.Flags()
+	{
+		flags.BoolVar(&showShortVersion, "short", false, "Print only the verison number.")
+		flags.BoolVar(&showAllVersions, "all", false, "Dump versions for all components.")
+	}
+
+	rootCmd.AddCommand(versionCmd)
+}