Use `R.utils`

[chainsawriot]

As R.utils is introduced in #362

• R.utils::isURL

rio/R/import.R

Line 105 in 0cb72f1

if (grepl("^http.*://", file)) {

• R.utils::mkdirs

rio/R/export.R

Line 105 in 0cb72f1

.create_directory_if_not_exists(file = file) ## fix 347

• R.utils::doCall rather than arg_reconcile?

Anymore?

[chainsawriot]

• R.utils::isPackageInstalled

rio/R/suggestions.R

Lines 21 to 32 in 0cb72f1

	uninstalled_formats <- function() {
	all_functions <- unlist(rio_formats[rio_formats$type == "suggest", c("import_function", "export_function")], use.names = FALSE)
	suggestions <- unique(stats::na.omit(stringi::stri_extract_first(all_functions, regex = "[a-zA-Z0-9\\.]+")))
	# which are not installed
	unlist(lapply(suggestions, function(x) {
	if (length(find.package(x, quiet = TRUE))) {
	NULL
	} else {
	x
	}
	}))
	}

[chainsawriot]

Research

• Can gp issues #319 be fixed by R.utils compression functions?

[schochastics]

Research

* [ ]  Can [gp issues #319](https://github.com/gesistsa/rio/issues/319) be fixed by R.utils compression functions?

I could so far not make compressFile compress to a valid zip archive