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44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
from typing import Type
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from pydantic import BaseModel, Field
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from langchain.tools.file_management.utils import (
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INVALID_PATH_TEMPLATE,
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BaseFileTool,
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FileValidationError,
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)
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class WriteFileInput(BaseModel):
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"""Input for WriteFileTool."""
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file_path: str = Field(..., description="name of file")
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text: str = Field(..., description="text to write to file")
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append: bool = Field(
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default=False, description="Whether to append to an existing file."
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)
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class WriteFileTool(BaseFileTool):
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name: str = "write_file"
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args_schema: Type[BaseModel] = WriteFileInput
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description: str = "Write file to disk"
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def _run(self, file_path: str, text: str, append: bool = False) -> str:
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try:
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write_path = self.get_relative_path(file_path)
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except FileValidationError:
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return INVALID_PATH_TEMPLATE.format(arg_name="file_path", value=file_path)
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try:
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write_path.parent.mkdir(exist_ok=True, parents=False)
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mode = "a" if append else "w"
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with write_path.open(mode, encoding="utf-8") as f:
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f.write(text)
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return f"File written successfully to {file_path}."
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except Exception as e:
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return "Error: " + str(e)
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async def _arun(self, file_path: str, text: str, append: bool = False) -> str:
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# TODO: Add aiofiles method
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raise NotImplementedError
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