preference to dynamically load comments and small fixes

lib/cfg/init.go

@@ -134,6 +134,7 @@ func defaultPreferences() {
 	DefaultPreferences.ShowAudio = &False
 
 	DefaultPreferences.SearchSuggestions = &False
+	DefaultPreferences.DynamicLoadComments = &False
 }
 
 func loadDefaultPreferences(loaded Preferences) {
@@ -216,6 +217,12 @@ func loadDefaultPreferences(loaded Preferences) {
 	} else {
 		DefaultPreferences.SearchSuggestions = &False
 	}
+
+	if loaded.DynamicLoadComments != nil {
+		DefaultPreferences.DynamicLoadComments = loaded.DynamicLoadComments
+	} else {
+		DefaultPreferences.DynamicLoadComments = &False
+	}
 }
 
 func boolean(in string) bool {
@@ -240,7 +247,7 @@ func fromEnv() error {
 	env = os.Getenv("DEFAULT_PREFERENCES")
 	if env != "" {
 		var p Preferences
-		err := json.Unmarshal([]byte(env), &p)
+		err := json.Unmarshal(S2b(env), &p)
 		if err != nil {
 			return wrappedError{err, "DEFAULT_PREFERENCES"}
 		}
@@ -383,7 +390,7 @@ func fromEnv() error {
 	env = os.Getenv("TRUSTED_PROXIES")
 	if env != "" {
 		var p []string
-		err := json.Unmarshal([]byte(env), &p)
+		err := json.Unmarshal(S2b(env), &p)
 		if err != nil {
 			return wrappedError{err, "TRUSTED_PROXIES"}
 		}

lib/cfg/misc.go

@@ -1,5 +1,7 @@
 package cfg
 
+import "unsafe"
+
 // seems soundcloud has 4 of these (i1, i2, i3, i4)
 // they point to the same ip from my observations, and they all serve the same files
 const ImageCDN = "i1.sndcdn.com"
@@ -67,4 +69,14 @@ type Preferences struct {
 	ShowAudio *bool // display audio (aac, opus, mpeg etc) under track player
 
 	SearchSuggestions *bool // load search suggestions on main page
+
+	DynamicLoadComments *bool // dynamic comments loader without leaving track page
+}
+
+func B2s(b []byte) string {
+	return unsafe.String(unsafe.SliceData(b), len(b))
+}
+
+func S2b(s string) []byte {
+	return unsafe.Slice(unsafe.StringData(s), len(s))
 }