Develop a warning message for malformed Excel worksheet names

write_ecc_to_excel() can include worksheet names, but it is important that they are legal names. This function emits a warning when candidate_worksheet_names is mal-formed.

Usage

check_worksheet_name_violations(candidate_worksheet_names)

Arguments

candidate_worksheet_names

Worksheet names to be checked.

Value

NULL invisibly and a warning if any problems are detected.

Examples

# No warning
check_worksheet_name_violations(c("abc", "123"))
if (FALSE) { # \dontrun{
  # Warnings
  # Illegal characters
  check_worksheet_name_violations(c("abc", "["))
  # Empty name
  check_worksheet_name_violations(c("", "abc"))
  # Too long
  check_worksheet_name_violations(strrep("x", 32))
  # Duplicates
  check_worksheet_name_violations(c("abc123", "abc123"))
} # }