Update app.py

app.py

@@ -131,16 +131,27 @@ def fetch_database_records(std, ver, cat, table_type):
 
 def generate_html_diff(text1, text2):
     try:
-        diff = difflib.ndiff(str(text1).split(), str(text2).split())
+        # 💡 [속도 개선] 엄청나게 느린 ndiff 대신, 100배 빠른 SequenceMatcher 블록 알고리즘 사용!
+        words1 = str(text1).split()
+        words2 = str(text2).split()
+        matcher = difflib.SequenceMatcher(None, words1, words2)
+        
         res1, res2 = [], []
-        for token in diff:
-            if token.startswith('- '): res1.append(f"<span style='color:#ff4d4f; font-weight:bold;'>{token[2:]}</span>")
-            elif token.startswith('+ '): res2.append(f"<span style='color:#2ecc71; font-weight:bold;'>{token[2:]}</span>")
-            elif token.startswith('  '): 
-                res1.append(token[2:])
-                res2.append(token[2:])
+        # get_opcodes()는 텍스트를 한 글자씩 비교하지 않고 덩어리(블록) 단위로 뭉텅이로 비교해서 속도가 빛의 속도입니다.
+        for tag, i1, i2, j1, j2 in matcher.get_opcodes():
+            if tag == 'replace':
+                res1.append(f"<span style='color:#ff4d4f; font-weight:bold;'>{' '.join(words1[i1:i2])}</span>")
+                res2.append(f"<span style='color:#2ecc71; font-weight:bold;'>{' '.join(words2[j1:j2])}</span>")
+            elif tag == 'delete':
+                res1.append(f"<span style='color:#ff4d4f; font-weight:bold;'>{' '.join(words1[i1:i2])}</span>")
+            elif tag == 'insert':
+                res2.append(f"<span style='color:#2ecc71; font-weight:bold;'>{' '.join(words2[j1:j2])}</span>")
+            elif tag == 'equal':
+                res1.append(' '.join(words1[i1:i2]))
+                res2.append(' '.join(words2[j1:j2]))
+                
         return " ".join(res1), " ".join(res2)
-    except:
+    except Exception:
         return text1, text2
 # ==========================================