Added option to list installed tools only

Author: nicholasdille

cmd/docker-setup/list.go

@@ -1,10 +1,15 @@
 package main
 
 import (
+	"github.com/nicholasdille/docker-setup/pkg/tool"
 	"github.com/spf13/cobra"
 )
 
+var installedOnly bool
+
 func initListCmd() {
+	listCmd.Flags().BoolVar(&installedOnly, "installed", false, "List only installed tools")
+
 	rootCmd.AddCommand(listCmd)
 }
 
@@ -18,7 +23,23 @@ var listCmd = &cobra.Command{
 		assertMetadataFileExists()
 		assertMetadataIsLoaded()
 
-		tools.List()
+		if installedOnly {
+			var installedTools tool.Tools
+			for index := range tools.Tools {
+				tools.Tools[index].ReplaceVariables(prefix+"/"+target, arch, altArch)
+				tools.Tools[index].GetMarkerFileStatus(prefix + "/" + cacheDirectory)
+				tools.Tools[index].GetBinaryStatus()
+				tools.Tools[index].GetVersionStatus()
+
+				if tools.Tools[index].Status.VersionMatches {
+					installedTools.Tools = append(installedTools.Tools, tools.Tools[index])
+				}
+			}
+			installedTools.List()
+
+		} else {
+			tools.List()
+		}
 
 		return nil
 	},