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File size: 1,800 Bytes
c07fa76 314c1d9 c07fa76 314c1d9 c07fa76 58a5dc2 c07fa76 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | import os
import tempfile
import requests
from fastapi import HTTPException
# from langchain_community.document_loaders import PyPDFLoader, Docx2txtLoader
from langchain_community.document_loaders import PyMuPDFLoader, Docx2txtLoader
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain.schema import Document
def load_and_chunk(url: str) -> list[Document]:
resp = requests.get(url)
if resp.status_code != 200:
raise HTTPException(400, "Could not download document")
content_type = resp.headers.get("Content-Type", "").lower()
url_lower = url.lower()
if "application/pdf" in content_type or ".pdf" in url_lower:
with tempfile.NamedTemporaryFile(delete=False, suffix=".pdf") as tmp:
tmp.write(resp.content)
tmp_path = tmp.name
try:
loader = PyMuPDFLoader(tmp_path)
docs = loader.load_and_split()
finally:
os.remove(tmp_path)
elif (
"application/vnd.openxmlformats-officedocument.wordprocessingml.document" in content_type
or ".docx" in url_lower
):
with tempfile.NamedTemporaryFile(delete=False, suffix=".docx") as tmp:
tmp.write(resp.content)
tmp_path = tmp.name
try:
loader = Docx2txtLoader(tmp_path)
docs = loader.load_and_split()
finally:
os.remove(tmp_path)
elif "text/plain" in content_type or ".txt" in url_lower:
text = resp.content.decode("utf-8", errors="ignore")
docs = [Document(page_content=text)]
else:
raise HTTPException(400, f"Unsupported document type: {content_type}")
splitter = RecursiveCharacterTextSplitter(chunk_size=800, chunk_overlap=100)
return splitter.split_documents(docs)
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