tools::R_user_dir() of R (>= 4.0.0)

[HenrikBengtsson]

From https://github.com/wch/r-source/blob/4cedccad7bbf4b5a6a0d1d803ebd09553f0bdbf5/src/library/tools/R/userdir.R#L19-L71:

R_user_dir <-
function(package, which = c("data", "config", "cache"))
{
    stopifnot(is.character(package), length(package) == 1L)


    which <- match.arg(which)


    home <- normalizePath("~")


    path <-
        switch(which,
               data = {
                   if(nzchar(p <- Sys.getenv("R_USER_DATA_DIR")))
                       p
                   else if(nzchar(p <- Sys.getenv("XDG_DATA_HOME")))
                       p
                   else if(.Platform$OS.type == "windows")
                       file.path(Sys.getenv("APPDATA"), "R", "data")
                   else if(Sys.info()["sysname"] == "Darwin")
                       file.path(home, "Library", "Application Support",
                                 "org.R-project.R") 
                   else
                       file.path(home, ".local", "share")
               },
               config = {
                   if(nzchar(p <- Sys.getenv("R_USER_CONFIG_DIR")))
                       p
                   else if(nzchar(p <- Sys.getenv("XDG_CONFIG_HOME")))
                       p
                   else if(.Platform$OS.type == "windows")
                       file.path(Sys.getenv("APPDATA"), "R", "config")
                   else if(Sys.info()["sysname"] == "Darwin")
                       file.path(home, "Library", "Preferences",
                                 "org.R-project.R")
                   else
                       file.path(home, ".config")
               },
               cache = {
                   if(nzchar(p <- Sys.getenv("R_USER_CACHE_DIR")))
                       p
                   else if(nzchar(p <- Sys.getenv("XDG_CACHE_HOME")))
                       p
                   else if(.Platform$OS.type == "windows")
                       file.path(Sys.getenv("LOCALAPPDATA"), "R", "cache")
                   else if(Sys.info()["sysname"] == "Darwin")
                       file.path(home, "Library", "Caches",
                                 "org.R-project.R")
                   else
                       file.path(home, ".cache")
               })
        
    file.path(path, "R", package)
}

[mllg]

Will upload a new version by the end of this week.

[HenrikBengtsson]

Thxs, I see it just hits CRAN. A minor issue with NEWS entry: I think it should say:

"Added backport for R_user_dir for R versions prior to 3.6.0 4.0.0."

[mllg]

Oh, right. Fixed now in the master branch.