fix repeat error

app.py

@@ -107,6 +107,25 @@ def _gc():
     if torch.cuda.is_available():
         torch.cuda.empty_cache()
 
+def clean_repeated_substrings(text):
+    """Clean repeated substrings in text"""
+    n = len(text)
+    if n < 2000:
+        return text
+    for length in range(2, n // 10 + 1):
+        candidate = text[-length:] 
+        count = 0
+        i = n - length
+        
+        while i >= 0 and text[i:i + length] == candidate:
+            count += 1
+            i -= length
+
+        if count >= 10:
+            return text[:n - length * (count - 1)]  
+
+    return text
+
 
 def _launch_demo(args, model, processor):
     # 全局变量用于跟踪是否是首次调用
@@ -278,12 +297,13 @@ def _launch_demo(args, model, processor):
             generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
         )
         
+        
         total_time = time.time() - start_time
         print(f"[DEBUG] ========== 全部完成 ==========")
         print(f"[DEBUG] 总耗时: {total_time:.2f}s")
         print(f"[DEBUG] 输出长度: {len(output_texts[0])} 字符")
         print(f"[DEBUG] 输出预览: {output_texts[0][:100]}...")
-        
+        output_texts[0] = clean_repeated_substrings(output_texts[0])
         return output_texts