Feat/add dump option

internal/commander/commander.go

@@ -21,6 +21,7 @@ import (
 type Commander interface {
 	BuildInstallCommand(name string) *exec.Cmd
 	BuildUninstallCommand(name string) *exec.Cmd
+	ListPackages() *exec.Cmd
 }
 
 // FromName create a commander from a package manager mane

internal/commands/root.go

@@ -20,7 +20,7 @@ var RootCmd = &cobra.Command{
 	Long: `
 Trouxa is a simple application to install and remove packages at once by just using a simple text file.
 `,
-	Version: "0.0.1",
+	Version: "0.1.0",
 	Run: func(command *cobra.Command, args []string) {
 		installPackage := func(name string, commander commander.Commander) bool {
 			ok, _ := manager.InstallPackage(name, commander.BuildInstallCommand(name))
@@ -35,6 +35,15 @@ Trouxa is a simple application to install and remove packages at once by just us
 		if commander == nil {
 			log.Fatalln("This package manager is not supported or invalid for your system!")
 		}
+		if list, _ := command.Flags().GetBool("list"); list {
+			log.Debugln("Entered list, will do nothing else")
+			ok, err := manager.ListPackages(commander.ListPackages())
+			if !ok {
+				log.Errorln("Failed to list packages: ", err)
+				os.Exit(1)
+			}
+			os.Exit(0)
+		}
 		data, err := input.GetData(pathFilePackages)
 		if err != nil {
 			log.WithError(err).Fatalln() // TODO
@@ -61,7 +70,7 @@ func init() {
 		"manager",
 		"m",
 		"",
-		"Package manager to download your packages. apt | pacman | yay | apk",
+		"Package manager to download your packages",
 	)
 	err := RootCmd.MarkFlagRequired("manager")
 	if err != nil {
@@ -73,4 +82,8 @@ func init() {
 		"p",
 		"./packages.txt",
 		"The file used by Trouxa to download de packages to your system")
+	RootCmd.Flags().Bool(
+		"list",
+		false,
+		"List all installed packages in this package manager and exit")
 }

internal/manager/apk/apk.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("apk", "del", name)
 }
+
+// ListPackages lists all installed packages from apk
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("apk", "list", "--installed")
+}

internal/manager/apt/apt.go

@@ -16,3 +16,8 @@ func (a *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (a *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("apt", "remove", name, "-y")
 }
+
+// ListPackages lists all installed packages from apt
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("apt", "list", "--installed")
+}

internal/manager/aptitude/aptitude.go

@@ -16,3 +16,8 @@ func (a *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (a *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("aptitude", "remove", "-y", name)
 }
+
+// ListPackages lists all installed packages from aptitude
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("aptitude", "search", "~i")
+}

internal/manager/dnf/dnf.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("dnf", "remove", "-y", name)
 }
+
+// ListPackages lists all installed packages from dnf
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("dnf", "list", "installed")
+}

internal/manager/eopkg/eopkg.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("eopkg", "remove", "-y", name)
 }
+
+// ListPackages lists all installed packages from eopkg
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("eopkg", "li")
+}

internal/manager/manager.go

@@ -31,7 +31,7 @@ func IsValid(name string) error {
 	return nil
 }
 
-// InstallPackage install a package with the apt package manager
+// InstallPackage install a package with a package manager
 func InstallPackage(name string, cmd *exec.Cmd) (bool, error) {
 	log.Infoln("Trying to install the package: ", name)
 	if ok, err := runCommand(cmd); !ok {
@@ -44,7 +44,7 @@ func InstallPackage(name string, cmd *exec.Cmd) (bool, error) {
 	return true, nil
 }
 
-// UninstallPackage uninstall a package with the apt package manager
+// UninstallPackage uninstall a package with a package manager
 func UninstallPackage(name string, cmd *exec.Cmd) (bool, error) {
 	log.Infoln("Uninstalling package: ", name)
 	if ok, err := runCommand(cmd); !ok {
@@ -56,3 +56,15 @@ func UninstallPackage(name string, cmd *exec.Cmd) (bool, error) {
 
 	return true, nil
 }
+
+// ListPackages lists all the installed packages via a package manager
+func ListPackages(cmd *exec.Cmd) (bool, error) {
+	log.Infoln("Listing packages")
+	if ok, err := runCommand(cmd); !ok {
+		log.Errorln("Could not list packages: ", err)
+
+		return false, err
+	}
+
+	return true, nil
+}

internal/manager/pacman/pacman.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("pacman", "-Rs", name, "--noconfirm")
 }
+
+// ListPackages lists all installed packages from pacman
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("pacman", "-Qe")
+}

internal/manager/snap/snap.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("snap", "remove", name)
 }
+
+// ListPackages lists all installed packages from snap
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("snap", "list", "--all")
+}

internal/manager/yay/yay.go

@@ -16,3 +16,11 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("yay", "-Rs", name, "--noconfirm")
 }
+
+// ListPackages lists all installed packages from yay
+func (a *Commander) ListPackages() *exec.Cmd {
+	// There seems to be no way of distinguishing between packages installed by pacman and yay:
+	// https://www.reddit.com/r/archlinux/comments/woh8fr/comment/ikb075w/?utm_source=reddit&utm_medium=web2x&context=3
+	// So the command ends up being virtually the same here
+	return exec.Command("yay", "-Qe")
+}

internal/manager/yum/yum.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("yum", "remove", "-y", name)
 }
+
+// ListPackages lists all installed packages from yum
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("yum", "list", "installed")
+}

internal/manager/zypper/zypper.go

@@ -16,3 +16,8 @@ func (p *Commander) BuildInstallCommand(name string) *exec.Cmd {
 func (p *Commander) BuildUninstallCommand(name string) *exec.Cmd {
 	return exec.Command("zypper", "remove", "-y", name)
 }
+
+// ListPackages lists all installed packages from zypper
+func (a *Commander) ListPackages() *exec.Cmd {
+	return exec.Command("zypper", "search", "--installed-only")
+}