servr (version 0.30)

httd: Serve static files under a directory

Description

If there is an index.html under this directory, it will be displayed; otherwise the list of files is displayed, with links on their names. After we run this function, we can go to http://localhost:port to browse the web pages either created from R or read from HTML files.

Usage

httd(dir = ".", ..., response = NULL)
httr(dir = ".", ...)
httw(
  dir = ".",
  watch = ".",
  pattern = NULL,
  all_files = FALSE,
  filter = NULL,
  handler = NULL,
  ...
)

Arguments

dir

The root directory to serve.

...

Server configurations passed to server_config().

response

A function of the form function(path, res, ...) that takes a file path and server response as input, and return a new response. This can be useful for post-processing the response (for experts only).

watch

A directory under which httw() is to watch for changes. If it is a relative path, it is relative to the dir argument.

pattern

A regular expression passed to list.files() to determine the files to watch.

all_files

Whether to watch all files including the hidden files.

filter

A function to filter the file paths returned from list.files() (e.g., you can exclude certain files from the watch list).

handler

A function to be called every time any files are changed or added under the directory; its argument is a character vector of the filenames of the files modified or added.

Details

httd() is a static file server by default (its response argument can turn it into a dynamic file server).

httr() is based on httr() with a custom response function that executes R files via xfun::record(), so that you will see the output of an R script as an HTML page. The page will be automatically updated when the R script is modified and saved.

httw() is similar to httd() but watches for changes under the directory: if an HTML file is being viewed in the browser, and any files are modified under the directory, the HTML page will be automatically refreshed.

References

https://github.com/yihui/servr

Examples

if (FALSE) { # interactive()
servr::httd()
}