console_file_menu: Prints out a menu from a list of file names in a folder for...

In consolechoice: An Easy and Quick Way to Loop a Character Vector as a Menu in the Console

Prints out a menu from a list of file names in a folder for user selection

Description

wrapper function to console_menu.

Usage

console_file_menu(
  folder_path = ".",
  pattern = NULL,
  instruction_msg = "Type the number in the console your choice and press enter: ",
  quit_key = "q",
  quit_message = paste0("To quit please type ", quit_key, " and press return."),
  return_number = FALSE,
  test_args = list(test_mode = FALSE, test_input = NA_character_)
)

Arguments

folder_path	character.
pattern	character. Regex pattern used in list.files.
instruction_msg	character. Message shows under the menu selection.
quit_key	character. Character value for the user to quit the menu.
quit_message	character. Character value to explain how to quit the menu.
return_number	logical. TRUE return number choice. FALSE returns the index of chr_vector.
test_args	list(test_mode logical, test_input character). Only use for testing.

Value

character

Examples

## Not run: 
console_file_menu("/folder/path/with/files")

console_file_menu("/folder/path/with/files",
                  ".bmp",
                  instruction_msg = "Please select a file to open")

console_file_menu(folder_path = "/folder/path/with/files",
                 pattern = "example_doc",
                 instruction_msg = "Choose a excel file to open",
                 quit_key = "Q",
                 quit_message = "Type in Q and press return to quit",
                 return_number = TRUE)

# Example code on how the function could be used
user_choice <- console_file_menu("/folder/path/", ".doc")

switch_result <- switch(
    user_choice,
    "document_one.doc" = # code here,
    "document_two.doc" = # code here,
    "q" = # exit code here
)
# Example code if the function returned the number in the list
user_choice <- console_file_menu("/folder/path/", ".doc", return_number = FALSE)

switch_result <- switch(
    user_choice,
    "1" = # code here,
    "2" = # code here,
    "q" = # exit code here
)

## End(Not run)

consolechoice documentation built on March 31, 2022, 1:06 a.m.