hst/container: flags string representation

This is useful for a user-facing representation other than JSON. This also gets rid of the ugly, outdated flags string builder in cmd/hakurei.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/hakurei/print.go

@@ -89,24 +89,19 @@ func printShowInstance(
 		if params.Hostname != "" {
 			t.Printf(" Hostname:\t%s\n", params.Hostname)
 		}
-		flags := make([]string, 0, 7)
-		writeFlag := func(name string, flag uintptr, force bool) {
-			if params.Flags&flag != 0 || force {
-				flags = append(flags, name)
+		flags := params.Flags.String()
+
+		// this is included in the upper hst.Config struct but is relevant here
+		const flagDirectWayland = "directwl"
+		if config.DirectWayland {
+			// hardcoded value when every flag is unset
+			if flags == "none" {
+				flags = flagDirectWayland
+			} else {
+				flags += ", " + flagDirectWayland
 			}
 		}
-		writeFlag("userns", hst.FUserns, false)
-		writeFlag("devel", hst.FDevel, false)
-		writeFlag("net", hst.FHostNet, false)
-		writeFlag("abstract", hst.FHostAbstract, false)
-		writeFlag("device", hst.FDevice, false)
-		writeFlag("tty", hst.FTty, false)
-		writeFlag("mapuid", hst.FMapRealUID, false)
-		writeFlag("directwl", 0, config.DirectWayland)
-		if len(flags) == 0 {
-			flags = append(flags, "none")
-		}
-		t.Printf(" Flags:\t%s\n", strings.Join(flags, " "))
+		t.Printf(" Flags:\t%s\n", flags)
 
 		if params.Path != nil {
 			t.Printf(" Path:\t%s\n", params.Path)

cmd/hakurei/print_test.go

@@ -43,7 +43,7 @@ func TestPrintShowInstance(t *testing.T) {
  Groups:         video, dialout, plugdev
  Home:           /data/data/org.chromium.Chromium
  Hostname:       localhost
- Flags:          userns devel net abstract device tty mapuid
+ Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir
  Path:           /run/current-system/sw/bin/chromium
  Arguments:      chromium --ignore-gpu-blocklist --disable-smooth-scrolling --enable-features=UseOzonePlatform --ozone-platform=wayland
 
@@ -87,6 +87,22 @@ App
  Enablements:    (no enablements)
  Flags:          none
 
+`, false},
+		{"config flag none directwl", nil, &hst.Config{DirectWayland: true, Container: new(hst.ContainerConfig)}, false, false, `Error: container configuration missing path to home directory!
+
+App
+ Identity:       0
+ Enablements:    (no enablements)
+ Flags:          directwl
+
+`, false},
+		{"config flag directwl", nil, &hst.Config{DirectWayland: true, Container: &hst.ContainerConfig{Flags: hst.FMultiarch}}, false, false, `Error: container configuration missing path to home directory!
+
+App
+ Identity:       0
+ Enablements:    (no enablements)
+ Flags:          multiarch, directwl
+
 `, false},
 		{"config nil entries", nil, &hst.Config{Container: &hst.ContainerConfig{Filesystem: make([]hst.FilesystemConfigJSON, 1)}, ExtraPerms: make([]hst.ExtraPermConfig, 1)}, false, false, `Error: container configuration missing path to home directory!
 
@@ -124,7 +140,7 @@ App
  Groups:         video, dialout, plugdev
  Home:           /data/data/org.chromium.Chromium
  Hostname:       localhost
- Flags:          userns devel net abstract device tty mapuid
+ Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir
  Path:           /run/current-system/sw/bin/chromium
  Arguments:      chromium --ignore-gpu-blocklist --disable-smooth-scrolling --enable-features=UseOzonePlatform --ozone-platform=wayland