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import os
from typing import Optional, Type
from langchain_core.pydantic_v1 import BaseModel, Field
from langchain.callbacks.manager import CallbackManagerForToolRun
from langchain.tools.base import BaseTool
from langchain.tools.file_management.utils import (
INVALID_PATH_TEMPLATE,
BaseFileToolMixin,
FileValidationError,
)
class DirectoryListingInput(BaseModel):
"""Input for ListDirectoryTool."""
dir_path: str = Field(default=".", description="Subdirectory to list.")
class ListDirectoryTool(BaseFileToolMixin, BaseTool):
"""Tool that lists files and directories in a specified folder."""
name: str = "list_directory"
args_schema: Type[BaseModel] = DirectoryListingInput
description: str = "List files and directories in a specified folder"
def _run(
self,
dir_path: str = ".",
run_manager: Optional[CallbackManagerForToolRun] = None,
) -> str:
try:
dir_path_ = self.get_relative_path(dir_path)
except FileValidationError:
return INVALID_PATH_TEMPLATE.format(arg_name="dir_path", value=dir_path)
try:
entries = os.listdir(dir_path_)
if entries:
return "\n".join(entries)
else:
return f"No files found in directory {dir_path}"
except Exception as e:
return "Error: " + str(e)
# TODO: Add aiofiles method
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