From f2421c1e8ed0a0c8392b179435d638ff55fe1551 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sat, 27 Apr 2024 19:54:16 +0300
Subject: Fix text truncation in reply quotes and Twitter posts

---
 .../juick/util/formatters/PlainTextFormatter.java  | 25 +++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'src/main/java/com/juick/util/formatters/PlainTextFormatter.java')

diff --git a/src/main/java/com/juick/util/formatters/PlainTextFormatter.java b/src/main/java/com/juick/util/formatters/PlainTextFormatter.java
index 9a885bca..2e7722e7 100644
--- a/src/main/java/com/juick/util/formatters/PlainTextFormatter.java
+++ b/src/main/java/com/juick/util/formatters/PlainTextFormatter.java
@@ -22,6 +22,7 @@ import com.juick.util.MessageUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.ocpsoft.prettytime.PrettyTime;
 
+import java.text.BreakIterator;
 import java.util.Date;
 import java.util.Locale;
 
@@ -62,7 +63,7 @@ public class PlainTextFormatter {
             sb.append(attachmentUrl).append("\n");
         }
         if (txt.length() >= cropLength) {
-            sb.append(StringUtils.substring(txt, 0, cropLength)).append(" [...]");
+            sb.append(PlainTextFormatter.truncateText(txt, cropLength)).append(" [...]");
         } else {
             sb.append(txt);
         }
@@ -97,4 +98,26 @@ public class PlainTextFormatter {
     public static String formatTwitterCard(Message jmsg) {
         return MessageUtils.getMessageHashTags(jmsg) + StringUtils.defaultString(jmsg.getText());
     }
+    /**
+     * Truncate text to the nearest word, up to a maximum length specified.
+     *
+     * @param text
+     * @param maxLength
+     * @return
+     */
+    public static String truncateText(String text, int maxLength) {
+        if(text != null && text.length() > maxLength) {
+            BreakIterator bi = BreakIterator.getWordInstance();
+            bi.setText(text);
+
+            if(bi.isBoundary(maxLength-1)) {
+                return text.substring(0, maxLength-2);
+            } else {
+                int preceding = bi.preceding(maxLength-1);
+                return text.substring(0, preceding-1);
+            }
+        } else {
+            return text;
+        }
+    }
 }
-- 
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