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51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
import json
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import re
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from abc import abstractmethod
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from typing import Dict, NamedTuple
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from langchain.schema import BaseOutputParser
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class AutoGPTAction(NamedTuple):
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name: str
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args: Dict
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class BaseAutoGPTOutputParser(BaseOutputParser):
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@abstractmethod
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def parse(self, text: str) -> AutoGPTAction:
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"""Return AutoGPTAction"""
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def preprocess_json_input(input_str: str) -> str:
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# Replace single backslashes with double backslashes,
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# while leaving already escaped ones intact
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corrected_str = re.sub(
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r'(?<!\\)\\(?!["\\/bfnrt]|u[0-9a-fA-F]{4})', r"\\\\", input_str
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)
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return corrected_str
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class AutoGPTOutputParser(BaseAutoGPTOutputParser):
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def parse(self, text: str) -> AutoGPTAction:
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try:
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parsed = json.loads(text, strict=False)
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except json.JSONDecodeError:
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preprocessed_text = preprocess_json_input(text)
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try:
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parsed = json.loads(preprocessed_text, strict=False)
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except Exception:
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return AutoGPTAction(
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name="ERROR",
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args={"error": f"Could not parse invalid json: {text}"},
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)
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try:
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return AutoGPTAction(
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name=parsed["command"]["name"],
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args=parsed["command"]["args"],
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)
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except KeyError:
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return AutoGPTAction(
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name="ERROR", args={"error": f"Incomplete command args: {parsed}"}
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)
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