Add reply text fallback for systems which do not have UTF-8

Reviewed-on: sunglocto/pi-im#20

main.go

@@ -43,7 +43,8 @@ var version string = "3i"
 var statBar widget.Label
 var chatInfo fyne.Container
 var chatSidebar fyne.Container
-
+var replyNameIcon string = ">"
+var replyBodyIcon string = ">"
 var agreesToSendingHotFuckIntoChannel bool = false
 
 // by sunglocto
@@ -79,6 +80,17 @@ type CustomMultiLineEntry struct {
 	widget.Entry
 }
 
+func isUTF8Locale() bool {
+    localeVars := []string{"LC_ALL", "LC_CTYPE", "LANG"}
+    for _, envVar := range localeVars {
+        value := os.Getenv(envVar)
+        if strings.Contains(strings.ToLower(value), "utf-8") {
+            return true
+        }
+    }
+    return false
+}
+
 func NewCustomMultiLineEntry() *CustomMultiLineEntry {
 	entry := &CustomMultiLineEntry{}
 	entry.ExtendBaseWidget(entry)
@@ -249,13 +261,13 @@ func CreateUITab(chatJidStr string) ChatTabUI {
 				for i := len(chatTabs[chatJidStr].Messages) - 1; i >= 0; i-- {
 					if reply.ID == chatTabs[chatJidStr].Messages[i].Raw.StanzaID.ID {
 						replytext.Show()
-						replytext.SetText(fmt.Sprintf(">%s", chatTabs[chatJidStr].Messages[i].Content))
+						replytext.SetText(fmt.Sprintf("%s %s", replyBodyIcon, chatTabs[chatJidStr].Messages[i].Content))
 						guy = chatTabs[chatJidStr].Messages[i].Author
 						break
 					}
 				}
 
-				author.SetText(fmt.Sprintf("%s > %s", chatTabs[chatJidStr].Messages[i].Author, guy))
+				author.SetText(fmt.Sprintf("%s %s %s", chatTabs[chatJidStr].Messages[i].Author, replyNameIcon, guy))
 			} else {
 				author.SetText(chatTabs[chatJidStr].Messages[i].Author)
 				replytext.Hide()
@@ -422,6 +434,11 @@ func main() {
 	login = config.Login
 	notifications = config.Notifications
 
+	if isUTF8Locale() {
+		replyBodyIcon = "↱" 
+		replyNameIcon = "→ "
+	}
+
 	client, err := oasisSdk.CreateClient(
 		&login)
 
@@ -714,13 +731,21 @@ func main() {
 							dialog.ShowError(err, w)
 						}
 						return
+					} else {
+						err = client.SendText(jid.MustParse(activeMucJid).Bare(), text)
+
+						if err != nil {
+							dialog.ShowError(err, w)
+						}
+
 					}
 				}, w)
-			}
-			err = client.SendText(jid.MustParse(activeMucJid).Bare(), text)
+			} else {
+				err = client.SendText(jid.MustParse(activeMucJid).Bare(), text)
 
-			if err != nil {
-				dialog.ShowError(err, w)
+				if err != nil {
+					dialog.ShowError(err, w)
+				}
 			}
 		}()
 
@@ -1147,14 +1172,14 @@ func main() {
 			album, al_ok := player.RawMetadata()["xesam:album"]
 			artists := []string{}
 
-			if a_ok{
+			if a_ok {
 				artist.Store(&artists)
 			}
 
-			if t_ok && a_ok && al_ok && album.String() != "\"\""{
+			if t_ok && a_ok && al_ok && album.String() != "\"\"" {
 				newtext = fmt.Sprintf("I'm currently listening to %s by %s, in the %s album", strings.Trim(title.String(), "\""), strings.Join(artists, ","), album)
 			} else if t_ok && a_ok {
-				newtext = fmt.Sprintf("I'm currently listening to %s by %s", strings.Trim(title.String(), "\""), strings.Join(artists, ",") )
+				newtext = fmt.Sprintf("I'm currently listening to %s by %s", strings.Trim(title.String(), "\""), strings.Join(artists, ","))
 			} else if t_ok {
 				newtext = fmt.Sprintf("I'm currently listening to %s", strings.Trim(title.String(), "\""))
 			} else if a_ok {