This function calls the command ebook-convert in Calibre
(https://calibre-ebook.com) to convert e-books.
Arguments
- input
The input filename.
- output
The output filename or extension (if only an extension is provided, the output filename will be the input filename with its extension replaced by
output; for example,calibre('foo.epub', 'mobi')generatesfoo.mobi).- options
A character vector of additional options to be passed to
ebook-convert.
