CSV processor needs an option to specify file type to override inference of type from the file extension

[szeke]

No description provided.

[linqyd]

Hey Pedro,
we cannot simply overwrite the inference of file type.

For example, we have an excel file but with the extension '.csv', if we pass the file_type="xlsx" to pyexcel_xlsx.get_data(), it will throw an exception. And I've checked the source code of pyexcel-xlsx, pyexcel automatically infer the file type based on extension, and in the documentation:
file_type – used only when filename is not a physial file name (means only use it when the file we wanna open is a stream file)

So, possible solution would be:
check the file extension and the passed 'file_type', if they don't match, throw an exception.