Refactoring

app/src/main/java/eu/faircode/email/Core.java

@@ -3007,19 +3007,15 @@ class Core {
             if (message.content && notify_preview)
                 try {
                     String body = Helper.readText(message.getFile(context));
+
                     StringBuilder sbm = new StringBuilder();
                     if (!TextUtils.isEmpty(message.subject))
                         sbm.append(message.subject).append("<br>");
-                    String text = Jsoup.parse(body).text();
-                    if (!TextUtils.isEmpty(text)) {
-                        sbm.append("<em>");
-                        if (text.length() > HtmlHelper.PREVIEW_SIZE) {
-                            sbm.append(text.substring(0, HtmlHelper.PREVIEW_SIZE));
-                            sbm.append("…");
-                        } else
-                            sbm.append(text);
-                        sbm.append("</em>");
-                    }
+
+                    String preview = HtmlHelper.getPreview(body);
+                    if (!TextUtils.isEmpty(preview))
+                        sbm.append("<em>").append(preview).append("</em>");
+
                     mbuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(HtmlHelper.fromHtml(sbm.toString())));
                 } catch (IOException ex) {
                     Log.e(ex);

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -83,7 +83,7 @@ import static androidx.core.text.HtmlCompat.FROM_HTML_SEPARATOR_LINE_BREAK_LIST_
 import static androidx.core.text.HtmlCompat.TO_HTML_PARAGRAPH_LINES_CONSECUTIVE;
 
 public class HtmlHelper {
-    static final int PREVIEW_SIZE = 250; // characters
+    private static final int PREVIEW_SIZE = 250; // characters
 
     private static final float MIN_LUMINANCE = 0.5f;
     private static final int MAX_AUTO_LINK = 250;
@@ -812,8 +812,16 @@ public class HtmlHelper {
     }
 
     static String getPreview(String body) {
-        String text = (body == null ? null : Jsoup.parse(body).text());
-        return (text == null ? null : text.substring(0, Math.min(text.length(), PREVIEW_SIZE)));
+        if (body == null)
+            return null;
+
+        String text = Jsoup.parse(body).text();
+
+        String preview = text.substring(0, Math.min(text.length(), PREVIEW_SIZE));
+        if (preview.length() < text.length())
+            preview += "…";
+
+        return preview;
     }
 
     static String getText(String html) {