Merge branch 'fixbug-incorrectly-escaped-commands' into 'mgx_ops'

Fixbug: 指令解析时遇到转义字符解析错误

See merge request pub/MetaGPT!298

metagpt/utils/repair_llm_raw_output.py

@@ -347,3 +347,44 @@ def extract_state_value_from_output(content: str) -> str:
     matches = list(set(matches))
     state = matches[0] if len(matches) > 0 else "-1"
     return state
+
+
+def repair_escape_error(commands):
+    """
+    Repaires escape errors in command responses.
+    When RoleZero parses a command, the command may contain unknown escape characters.
+
+    This function has two steps:
+    1. Transform unescaped substrings like "\d" and "\(" to "\\\\d" and "\\\\(".
+    2. Transform escaped characters like '\f' to substrings like "\\\\f".
+
+    Example:
+        When the original JSON string is " {"content":"\\\\( \\\\frac{1}{2} \\\\)"} ",
+        The "content" will be parsed correctly to "\( \frac{1}{2} \)".
+
+        However, if the original JSON string is " {"content":"\( \frac{1}{2} \)"}" directly.
+        It will cause a parsing error.
+
+        To repair the wrong JSON string, the following transformations will be used:
+        "\("   --->  "\\\\("
+        '\f'   --->  "\\\\f"
+        "\)"   --->  "\\\\)"
+
+    """
+    escape_repair_map = {
+        "\a": "\\\\a",
+        "\b": "\\\\b",
+        "\f": "\\\\f",
+        "\r": "\\\\r",
+        "\t": "\\\\t",
+        "\v": "\\\\v",
+    }
+    new_command = ""
+    for index, ch in enumerate(commands):
+        if ch == "\\" and index + 1 < len(commands):
+            if commands[index + 1] not in ["n", '"', " "]:
+                new_command += "\\"
+        elif ch in escape_repair_map:
+            ch = escape_repair_map[ch]
+        new_command += ch
+    return new_command