Preview in Viewer Pane

Intend to preview files or html page directly into the viewer pane of the RStudio environment (works on unix system).

preview(..., url_path = NULL)

Arguments

...	(`character`) concatenated with [file.path()].
url_path	(`character`) eventually, a url path.

Details

The file path provided via `...` has priority over `url_path`. The function is expected to work at least with `.html`, `.pdf`, `.mp4`.

Examples

if (FALSE) # Needs an active RStudio session

# The input for file path is rather permissive:
preview("/opt", "software", "R-3.6.2/doc/manual/R-admin.html")
preview("/opt/software/R-3.6.2/doc/manual/R-admin.html")

# Works with url:
preview(url_path = "https://fcacollin.github.io/Latarnia/portfolio/")

# Works with mp4 urls:
preview(
  url_path = paste0(
    "https://www.ucb.com/_up/ucb_com_stories_media/videos/",
    "UCB90__Our_history_1080p_25fps_H264-128kbit_AAC.mp4"
  )
)

# Work with pdf:
preview("/opt/software/R-3.6.2/doc/NEWS.pdf")


# Should not work if file path points at a directory:
testthat::expect_error(
  preview(getwd())
)