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600b7bdd61
Co-authored-by: Bagatur <baskaryan@gmail.com> Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from typing import Optional, Type
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.tools import BaseTool
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from pydantic import BaseModel, Field
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from langchain_community.tools.file_management.utils import (
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INVALID_PATH_TEMPLATE,
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BaseFileToolMixin,
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FileValidationError,
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)
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class ReadFileInput(BaseModel):
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"""Input for ReadFileTool."""
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file_path: str = Field(..., description="name of file")
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class ReadFileTool(BaseFileToolMixin, BaseTool): # type: ignore[override, override]
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"""Tool that reads a file."""
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name: str = "read_file"
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args_schema: Type[BaseModel] = ReadFileInput
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description: str = "Read file from disk"
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def _run(
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self,
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file_path: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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try:
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read_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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if not read_path.exists():
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return f"Error: no such file or directory: {file_path}"
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try:
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with read_path.open("r", encoding="utf-8") as f:
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content = f.read()
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return content
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except Exception as e:
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return "Error: " + str(e)
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# TODO: Add aiofiles method
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