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Check if a file path has a file extension

Source: R/check_file_overwrite.R
check_path_fileext.Rd

check_path_fileext() checks if a character vector of file paths have a file extension or a specified file extension. Errors if any elements of do not pass the condition.

Usage

check_path_fileext(
  path,
  fileext = NULL,
  message = "{.arg {arg}} must have a file extension.",
  arg = caller_arg(path),
  call = caller_env()
)

Arguments

path

Character vector with file path or paths to check. Required.

fileext

Optional file extension string. If NULL, path must have a file extension. If fileext is a character string, all elements of path must have a matching file extension.

message

It is formatted via a call to cli_bullets().

arg

An argument name as a string. This argument will be mentioned in error messages as the input that is at the origin of a problem.

call

The execution environment of a currently running function, e.g. call = caller_env(). The corresponding function call is retrieved and mentioned in error messages as the source of the error.

You only need to supply call when throwing a condition from a helper function which wouldn't be relevant to mention in the message.

Can also be NULL or a defused function call to respectively not display any call or hard-code a code to display.

For more information about error calls, see Including function calls in error messages.