Returns the file at the given path as the response.

include_file(file, res, content_type = getContentType(tools::file_ext(file)))

include_html(file, res)

include_md(file, res, format = NULL)

include_rmd(file, res, format = NULL)

## Arguments

file The path to the file to return The response object into which we'll write If provided, the given value will be sent as the Content-Type header in the response. Defaults to the contentType of the file extension. To disable the Content-Type header, set content_type = NULL. Passed as the output_format to rmarkdown::render

## Details

include_html will merely return the file with the proper content_type for HTML. include_md and include_rmd will process the given markdown file through rmarkdown::render and return the resultant HTML as a response.