SchemaOnRead (version 1.0.2)

checkExtensions: Automated Schema on Read File Extensions Checker

Description

Checks to see if the given file exists and has one of the provided extensions.

Usage

checkExtensions(path = ".", extensions = NULL)

Arguments

path

a file to load or folder to recursively load.

extensions

a list of file extensions to check provided as lower case strings.

See Also

checkExtensions.

Examples

## Load the needed library.
library(SchemaOnRead)

## Define a new processor.
newProcessor <- function(path, ...) {

  # Check the file existance and extensions.
  if (!SchemaOnRead::checkExtensions(path, c("xyz"))) return(NULL)

  ## As an example, attempt to read an XYZ file as a CSV file.
  read.csv(path, header = FALSE)

}

## Define a new processors list.
newProcessors <- c(newProcessor, SchemaOnRead::simpleProcessors())

# Use the new processors list.
schemaOnRead(path = "../inst/extdata", processors = newProcessors)