Excel document parser/importer?

Question

Can anyone recommend a decent Excel (Binary XLS) document importer written in C?

I am looking to write a Ruby wrapper around one.

I haven't been able to find any via Google.

Answer 1

Have you considered the source code of Gnumeric?

Answer 2

Unfortunately I cant' recommend anything to import XLS files directly, but I recently used libcsv in a project of mine to import spreadsheets saved as CSV files into a C application.

In Excel, choose "File", "Save As" and set the "Save as type" to "CSV (Comma delimited) (*.csv)" to save your file as a CSV.