Nothing
# tools for cleaning up renv's cached data
cleanse <- function() {
enabled <- Sys.getenv("RENV_CLEANSE_ENABLED", unset = "TRUE")
if (!truthy(enabled))
return(invisible(FALSE))
# remove unused sandbox directories
renv_cleanse_sandbox(path = renv_paths_sandbox())
# remove empty directories in the root directory
# we can't do this on Windows, as some empty directories
# might also be broken junctions, and we want to keep
# those around so we can inform the user that they need
# to repair that
if (!renv_platform_windows())
renv_cleanse_empty(path = renv_paths_root())
invisible(TRUE)
}
renv_cleanse_sandbox <- function(path) {
# get sandbox root path
root <- dirname(path)
if (!file.exists(root))
return(FALSE)
# list directories within
dirs <- list.files(root, full.names = TRUE)
# look for apparently-unused sandbox directories
info <- suppressWarnings(file.info(dirs, extra_cols = FALSE))
age <- difftime(Sys.time(), info$mtime, units = "days")
old <- age >= 7
# remove the old sandbox directories
unlink(dirs[old], recursive = TRUE, force = TRUE)
}
renv_cleanse_empty <- function(path) {
# no-op for Solaris
if (renv_platform_solaris())
return(FALSE)
if (!file.exists(path))
return(FALSE)
renv_scope_wd(path)
# execute system command for removing empty directories
action <- "removing empty directories"
if (renv_platform_windows()) {
args <- c(".", ".", "/S", "/MOVE")
renv_system_exec("robocopy", args, action, 0:8)
} else {
args <- c(".", "-type", "d", "-empty", "-delete")
renv_system_exec("find", args, action)
}
TRUE
}
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