chk_ext: Check File Extension

In chk: Check User-Supplied Function Arguments

Check File Extension

Description

Checks extension using

vld_string(x) && vld_subset(tools::file_ext(x), ext)

The user may want to use toupper() or tolower() to ensure the case matches.

Usage

chk_ext(x, ext, x_name = NULL)

vld_ext(x, ext)

Arguments

x	The object to check.
ext	A character vector of the permitted file extensions (without the .).
x_name	A string of the name of object x or NULL.

Value

The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.

The vld_ function returns a flag indicating whether the test was met.

Functions

• vld_ext(): Validate File Extension

See Also

Other chk_files: chk_dir(), chk_file()

Examples

# chk_ext
try(chk_ext("file1.pdf", "png"))
# vld_ext
vld_ext("oeu.pdf", "pdf")
vld_ext(toupper("oeu.pdf"), "PDF")

chk documentation built on Oct. 6, 2023, 9:06 a.m.