OOXML(crate github) is going to be an pure rust implementation of OOXML specification, but here now spreadsheet is the only supported format. The development will be continue but with no promise. I'm not familiar with the OpenXML format but in learning.
Previous days I've created an tool called xlsx2csv - , an Excel-like spreadsheet to CSV coverter, thanks to calamine - an Excel/OpenDocument Spreadsheets file reader/deserializer. But datetime cell value is not automatically supported. That's the thing begin. New version of xlsx2csv v0.4.0 with datetime supported along with the ooxml crate is published already. both of the crates are approciated for any code review or any contributing.
Thanks for all.