This function adds context to rmarkdown::pandoc_available() and provides
an error message directing the user to download the latest version of pandoc
or RStudio Desktop.
Arguments
- quiet
if
TRUE, no message will be emitted, otherwise the pandoc version and path will be sent as a message (stderr) to the screen.- pv
the minimum pandoc version
- rv
the minimum rstudio version (if available)
Examples
# NOTE: this is an internal function, so there is no guarantee that the usage
# will remain the same across time. This is merely for demonstration purposes
# only.
# Check for pandoc ----------------------
asNamespace("sandpaper")$check_pandoc(quiet = FALSE)
#> ◉ pandoc found
#> version : 3.1.11
#> path : /opt/hostedtoolcache/pandoc/3.1.11/x64
# Message emitted when pandoc cannot be found --------
try(asNamespace("sandpaper")$check_pandoc(quiet = FALSE, pv = "999"))
#> sandpaper requires pandoc version 999 or higher.
#> ! You have pandoc version 3.1.11 in /opt/hostedtoolcache/pandoc/3.1.11/x64
#> → Please visit <https://pandoc.org/installing.html> to install the latest version.
#> Error : Incorrect pandoc version