Bug: Support XLSX Mimetype

[ctandrewtran]

Context

Using latest docling-core (v2.6.1) and docling (v2.8.1) xlsx files are unable to be processed due to a ValueError mentioning that the mimetype "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" is not valid as per DocumentOrigin

"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" is not a mimetype offered by default by the mimetype pkg being used by docling and hence has to be added in the extras section

Fix

Add the mimetype as an extra mimetype

[dolfim-ibm]

@ctandrewtran can you please provide a few more details on the failure that you observed?

• which operating system?
• which python version?
• was this on a specific file?
• running which code/command?

[ctandrewtran]

@ctandrewtran can you please provide a few more details on the failure that you observed?

• which operating system?
• which python version?
• was this on a specific file?
• running which code/command?

OS: Amazon Linux 2

Kernel Version: 5.10.228-219.884.amzn2.x86_64

Python Version: 3.12.6

Specific file: any .xlsx file that will have mimetype application/vnd.openxmlformats-officedocument.spreadsheetml.sheet can reproduce the issue

Note: On my end I implemented the change done in this PR in the docling-core package manually in my environment and it did indeed fix the problem.

Code:

from docling import *
import streamlit as st
import io

file = st.file_uploader(type=['xlsx'])

arti = docling.pipeline.standard_pdf_pipeline.StandardPdfPipeline.download_models_hf()

pipelinePDF = docling.datampdel.pipeline_options.PdfPipelineOptions(artifacts_path=arti)

converter = docling.document_converter.DocumentConverter(allowed_formats=[docling.InputFormat.XLSX])

buf = io.BytesIO(file.read())

src = docling.datamodel.base_models.DocumentStream(name=file.name, stream=buf) 

doclingified = converter.convert(src)

[ctandrewtran]

@ctandrewtran can you please provide a few more details on the failure that you observed?

• which operating system?
• which python version?
• was this on a specific file?
• running which code/command?

Closing the loop, someone else in the issue I raised in the Docling Repo mentioned having the same bug

docling-project/docling#493