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import asyncio
import os
from langchain_community.document_loaders import (
PyMuPDFLoader,
TextLoader,
UnstructuredCSVLoader,
UnstructuredExcelLoader,
UnstructuredMarkdownLoader,
UnstructuredPowerPointLoader,
UnstructuredWordDocumentLoader
)
class DocumentLoader:
def __init__(self, path):
self.path = path
async def load(self) -> list:
tasks = []
for root, dirs, files in os.walk(self.path):
for file in files:
file_path = os.path.join(root, file)
file_name, file_extension_with_dot = os.path.splitext(file_path)
file_extension = file_extension_with_dot.strip(".")
tasks.append(self._load_document(file_path, file_extension))
docs = []
for pages in await asyncio.gather(*tasks):
for page in pages:
if page.page_content:
docs.append({
"raw_content": page.page_content,
"url": os.path.basename(page.metadata['source'])
})
if not docs:
raise ValueError("🤷 Failed to load any documents!")
return docs
async def _load_document(self, file_path: str, file_extension: str) -> list:
ret_data = []
try:
loader_dict = {
"pdf": PyMuPDFLoader(file_path),
"txt": TextLoader(file_path),
"doc": UnstructuredWordDocumentLoader(file_path),
"docx": UnstructuredWordDocumentLoader(file_path),
"pptx": UnstructuredPowerPointLoader(file_path),
"csv": UnstructuredCSVLoader(file_path, mode="elements"),
"xls": UnstructuredExcelLoader(file_path, mode="elements"),
"xlsx": UnstructuredExcelLoader(file_path, mode="elements"),
"md": UnstructuredMarkdownLoader(file_path)
}
loader = loader_dict.get(file_extension, None)
if loader:
ret_data = loader.load()
except Exception as e:
print(f"Failed to load document : {file_path}")
print(e)
return ret_data
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