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"""Loading logic for loading documents from a directory."""
import logging
from pathlib import Path
from typing import List, Type, Union
from langchain.docstore.document import Document
from langchain.document_loaders.base import BaseLoader
from langchain.document_loaders.html_bs import BSHTMLLoader
from langchain.document_loaders.text import TextLoader
from langchain.document_loaders.unstructured import UnstructuredFileLoader
FILE_LOADER_TYPE = Union[
Type[UnstructuredFileLoader], Type[TextLoader], Type[BSHTMLLoader]
]
logger = logging.getLogger(__file__)
def _is_visible(p: Path) -> bool:
parts = p.parts
for _p in parts:
if _p.startswith("."):
return False
return True
class DirectoryLoader(BaseLoader):
"""Loading logic for loading documents from a directory."""
def __init__(
self,
path: str,
glob: str = "**/[!.]*",
silent_errors: bool = False,
load_hidden: bool = False,
loader_cls: FILE_LOADER_TYPE = UnstructuredFileLoader,
recursive: bool = False,
):
"""Initialize with path to directory and how to glob over it."""
self.path = path
self.glob = glob
self.load_hidden = load_hidden
self.loader_cls = loader_cls
self.silent_errors = silent_errors
self.recursive = recursive
def load(self) -> List[Document]:
"""Load documents."""
p = Path(self.path)
docs = []
items = p.rglob(self.glob) if self.recursive else p.glob(self.glob)
for i in items:
if i.is_file():
if _is_visible(i.relative_to(p)) or self.load_hidden:
try:
sub_docs = self.loader_cls(str(i)).load()
docs.extend(sub_docs)
except Exception as e:
if self.silent_errors:
logger.warning(e)
else:
raise e
return docs
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