system_file: Find a file in a package
In richierocks/pathological: Path Manipulation Utilities

Description Usage Arguments Value See Also Examples

Wrapper to system.file that returns standardized paths.

1 2	system_file(..., package = "base", library_location = NULL, must_work = FALSE, sep = c("/", "\\"))

`...`	Character vectors specifying subdirectories and files within some package. The default, none, returns the root of the package. Wildcards are not supported.
`package`	A string with the name of a single package. An error occurs if more than one package name is given.
`library_location`	a character vector with path names of R libraries. See the 'Details section of `system.file` for the meaning of the default value of NULL.
`must_work`	If `TRUE`, an error is given if there are no matching files.
`sep`	String separator between directory levels in the output.

A character vector of positive length, containing the file paths that matched ..., or a missing string, NA, if none matched (unless mustWork = TRUE). (This behaviour for missing paths differs from system.file.) If matching the root of a package, there is no trailing separator. system.file() with no arguments gives the root of the base package.

system.file

# Examples taken from ?system.file
system_file()                  # The root of the 'base' package
system_file(package = "stats") # The root of package 'stats'
system_file("INDEX")
system_file("help", "AnIndex", package = "splines")