feat: 尝试使用json_repair库代替HRAG的JSON修复

src/chat/knowledge/src/utils/json_fix.py

@@ -1,76 +1,24 @@
 import json
+from json_repair import repair_json
 
+# 以下代码用于修复损坏的 JSON 字符串。
 
-def _find_unclosed(json_str):
-    """
-    Identifies the unclosed braces and brackets in the JSON string.
-
-    Args:
-        json_str (str): The JSON string to analyze.
-
-    Returns:
-        list: A list of unclosed elements in the order they were opened.
-    """
-    unclosed = []
-    inside_string = False
-    escape_next = False
-
-    for char in json_str:
-        if inside_string:
-            if escape_next:
-                escape_next = False
-            elif char == "\\":
-                escape_next = True
-            elif char == '"':
-                inside_string = False
-        else:
-            if char == '"':
-                inside_string = True
-            elif char in "{[":
-                unclosed.append(char)
-            elif char in "}]":
-                if unclosed and ((char == "}" and unclosed[-1] == "{") or (char == "]" and unclosed[-1] == "[")):
-                    unclosed.pop()
-
-    return unclosed
-
-
-# The following code is used to fix a broken JSON string.
-# From HippoRAG2 (GitHub: OSU-NLP-Group/HippoRAG)
 def fix_broken_generated_json(json_str: str) -> str:
     """
-    Fixes a malformed JSON string by:
-    - Removing the last comma and any trailing content.
-    - Iterating over the JSON string once to determine and fix unclosed braces or brackets.
-    - Ensuring braces and brackets inside string literals are not considered.
+    使用 json-repair 库修复格式错误的 JSON 字符串。
 
-    If the original json_str string can be successfully loaded by json.loads(), will directly return it without any modification.
+    如果原始 json_str 字符串可以被 json.loads() 成功加载，则直接返回而不进行任何修改。
 
-    Args:
-        json_str (str): The malformed JSON string to be fixed.
+    参数:
+        json_str (str): 需要修复的格式错误的 JSON 字符串。
 
-    Returns:
-        str: The corrected JSON string.
+    返回:
+        str: 修复后的 JSON 字符串。
     """
-
     try:
-        # Try to load the JSON to see if it is valid
+        # 尝试加载 JSON 以查看其是否有效
         json.loads(json_str)
-        return json_str  # Return as-is if valid
+        return json_str  # 如果有效则按原样返回
     except json.JSONDecodeError:
-        pass
-
-    # Step 1: Remove trailing content after the last comma.
-    last_comma_index = json_str.rfind(",")
-    if last_comma_index != -1:
-        json_str = json_str[:last_comma_index]
-
-    # Step 2: Identify unclosed braces and brackets.
-    unclosed_elements = _find_unclosed(json_str)
-
-    # Step 3: Append the necessary closing elements in reverse order of opening.
-    closing_map = {"{": "}", "[": "]"}
-    for open_char in reversed(unclosed_elements):
-        json_str += closing_map[open_char]
-
-    return json_str
+        # 如果无效，则尝试修复它
+        return repair_json(json_str)