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For a file, first encode it into base64 data (a character string). Then
generate a hyperlink of the form <a href="base64 data"
download="filename">Download filename</a>. The file can be downloaded when
the link is clicked in modern web browsers. For a directory, it will be
compressed as a zip archive first, and the zip file is passed to
embed_file(). For multiple files, they are also compressed to a zip file
first.
embed_file(path, name = basename(path), text = paste("Download", name), ...)embed_dir(path, name = paste0(normalize_path(path), ".zip"), ...)
embed_files(path, name = with_ext(basename(path[1]), ".zip"), ...)
An HTML tag <a> with the appropriate attributes.
Path to the file(s) or directory.
The default filename to use when downloading the file. Note that
for embed_dir(), only the base name (of the zip filename) will be used.
The text for the hyperlink.
For embed_file(), additional arguments to be passed to
html_tag() (e.g., class = 'foo'). For embed_dir() and
embed_files(), arguments passed to embed_file().
These functions can be called in R code chunks in R Markdown documents with HTML output formats. You may embed an arbitrary file or directory in the HTML output file, so that readers of the HTML page can download it from the browser. A common use case is to embed data files for readers to download.
logo = xfun:::R_logo()
link = xfun::embed_file(logo, text = "Download R logo")
link
if (interactive()) xfun::html_view(link)
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